newlib-cygwin/winsup/cygwin/exceptions.cc

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2000-02-18 03:38:33 +08:00
/* exceptions.cc
This file is part of Cygwin.
This software is a copyrighted work licensed under the terms of the
Cygwin license. Please consult the file "CYGWIN_LICENSE" for
details. */
Remove unneeded header files from source files throughout. Update copyrights where appropriate. * globals.cc: New file for generic global variables. * mkglobals_h: New file to generate globals.h. * mkstatic: New Script used to build a (currently non-working) static libcygwin_s.a. * Makefile.in: Add unused rule to build a non-working libcygwin_s.a. (DLL_OFILES): Add globals.o. Make all objects rely on globals.h. (globals.h): New target. Generate globals.h. * cygtls.h: Honor new CYGTLS_HANDLE define to control when the HANDLE operator is allowed in _cygtls. * dcrt0.cc: Move most globals to globals.cc. * init.cc: Ditto. * environ.cc (strip_title_path): Remove now-unneeded extern. * fhandler_serial.cc (fhandler_serial::open): Ditto. * pinfo.cc: Ditto. (commune_process): Ditto. * shared.cc: Ditto. * glob.cc: Ditto. * strace.cc: Ditto. * exceptions.cc: Define CYGTLS_HANDLE before including winsup.h. * path.cc (stat_suffixes): Move here. * security.h: Add forward class path_conv declaration. * smallprint.cc (__small_vsprintf): Make a true c++ function. (__small_sprintf): Ditto. (small_printf): Ditto. (console_printf): Ditto. (__small_vswprintf): Ditto. (__small_swprintf): Ditto. * spawn.cc (spawn_guts): Remove _stdcall decoration in favor of regparm. (hExeced): Move to globals.cc * strfuncs.cc (current_codepage): Ditto. (active_codepage): Ditto. * sync.cc (lock_process::locker): Move here from dcrt0.cc. * syscalls.cc (stat_suffixes): Move to path.cc. * tty.cc (tty::create_master): Uncapitalize fatal warning for consistency. * winsup.h: Include globals.h to declare most of the grab bag list of globals which were previously defined here. * mount.h: Move USER_* defines back to shared_info.h. * speclib: Force temporary directory cleanup.
2009-01-03 13:12:22 +08:00
#define CYGTLS_HANDLE
#include "winsup.h"
#include "miscfuncs.h"
#include <imagehlp.h>
#include <stdlib.h>
#include <stdarg.h>
#include <syslog.h>
#include <wchar.h>
2000-02-18 03:38:33 +08:00
Eliminate use of sigframe and sigthread throughout. * Makefile.in (DLL_OFILES): Add sigfe.o. Remove reliance on cygwin.def from cygwin0.dll dependency since dependence on sigfe.o implies that. Generate def file on the fly using 'gendef'. * configure.in: Don't auto-generate cygwin.def. * configure: Regenerate. * cygwin.din: Add SIGFE stuff where appropriate. * dcrt0.cc (dll_crt0_1): Initialize cygwin tls early in process startup. Set _main_tls to address of the main thread's cygwin tls. * debug.h: Remove now unneeded WFSO and WFMO declarations. * exceptions.cc (_last_thread): Define. (set_thread_state_for_signals): New function. (reset_thread_exception_for_signals): Ditto. (init_thread_for_signals): Ditto. (delete_thread_for_signals): Ditto. (capture_thread_for_signals): Ditto. (handle_exceptions): Set return address explicitly for exceptions prior to calling sig_send. (interrupt_on_return): Eliminate. (setup_handler): Add preliminary implementation for dealing with thread-specific signals by querying _main_tls. (signal_exit): Use cygthread::main_thread_id instead of mainthread.id. (call_signal_handler_now): For now, just handle the main thread. * fork.cc (vfork): Save and restore main _my_tls. * gendef: New file. Generates def file and sigfe.s file. * gentls_offsets: New file. Generates offsets for perl to use in sigfe.s. * how-signals-work.txt: Mention that info is obsolete. * init.cc (dll_entry): Initialize cygwin tls storage here. * miscfuncs.cc (low_priority_sleep): Make a C function for easier calling from asm. * perthread.h (vfork_save::tls): New element. * signal.cc (nanosleep): Replace previous use of sigframe.call_signal_handler_now with straight call to call_signal_handler_now. (abort): Ditto. * syscalls.cc (readv): Ditto. * termios.cc (tcsetattr): Ditto. * wait.cc (wait4): Ditto. * sigproc.cc (sig_dispatch_pending): Ditto. (sig_send): Ditto. * sigproc.h: Declare call_signal_handler_now. * thread.cc (pthread::thread_init_wrapper): Initialize cygwin tls. Remove obsolete and unworking signal stuff. * thread.h (verifyable_object::sigs): Eliminate. (verifyable_object::sigmask): Eliminate. (verifyable_object::sigtodo): Eliminate. (verifyable_object::exit): Make attribute noreturn. (verifyable_object::thread_init_wrapper): Ditto. (pthread_null::exit): Ditto. * winbase.h (__stackbase): Always define. * winsup.h (low_priority_sleep): Declare as a "C" function. * include/cygwin/version.h: Bump API version to reflect sigwait export. * include/sys/queue.h: Protect SLIST_ENTRY from previous declaration. * signal.cc (sigwait): Implement. * select.cc (fhandler_base::ready_for_read): Add debugging output. * devices.h: Define more device pointers via their storage. * devices.in: Don't parse things like /dev/inet/tcp, as they really have no meaning. * devices.cc: Regenerate. * gendevices: Set proper protection for output file. * cygtls.h: New file. * gendef: New file. * gentls_offsets: New file. * tlsoffsets.h: New file. Autogenerated. * config/i386/longjmp.c: Remove. File subsumed by gendef output. * config/i386/makefrag: Remove obsolete file. * fhandler.cc: Remove spurious access_worker declaration. * spawn.cc (spawnve): Make debugging output more accurate. * cygwin-gperf: Remove. * devices.cc: Remove.
2003-11-29 04:55:59 +08:00
#include "cygtls.h"
* DevNotes: Add entry cgf-000013. * cygserver_ipc.h (ipc_set_proc_info): Use _cygtls::ipc_set_proc_info to set per-thread signal arrived value. * cygthread.cc (cygthread::detach): Use per-thread signal_arrived via set_thread_waiting. * fork.cc (_cygtls::fixup_after_fork): Clear signal_arrived. (_cygtls::remove): Close any signal_arrived handle when thread exists. (_cygtls::find_tls): Remove unneeded function. * cygtls.h: Update copyright. (class _cygtls): Reorganize to help avoid rebuilding newlib when structure changes. (_cygtls::event): Delete. (_cygtls::threadkill): Ditto. (_cygtls::signal_waiting): Declare new bool. (_cygtls::find_tls): Delete declaration. (_cygtls::set_threadkill): Ditto. (_cygtls::reset_threadkill): Ditto. (_cygtls::set_signal_arrived): Declare new function. (class set_thread_waiting): Declare new class. * cygwait.cc (cw_nowait_storage): Define. (cygwait): Set per-thread signal_arrived via set_thread_waiting. Don't special-case _main_tls. * cygwait.h (cw_nowait): Define. (cw_infinite): Ditto. (cygwait): Redefine pathological wait-only case. * dcrt0.cc (dll_crt0_0): Remove call to now-defunct events_init(). (dll_crt0_1): Remove call to now-defunct create_signal_arrived(). * exceptions.cc: Reflect set_signal_mask() argument reordering throughout. Remove signal mask synchronization throughout. (events_init): Delete definition. (mask_sync): Delete now-unneeded mask synchronization. (set_signal_mask): Reverse order of arguments to "standard" to, from layout. Rename "newmask" argument to "setmask". Remove debugging. (sig_handle_tty_stop): Use cancelable_wait rather than WFMO. (_cygtls::interrupt_setup): Don't treat "threadkill" events specially. Conditionally set signal_arrived depending on whether the thread has created it or not. (sigpacket::process): Reorganize to reflect thread-specific sending of signals which is more in line with the way it was actually supposed to work. * fhandler_socket.cc (get_inet_addr): Use cancelable_wait rather than IsEventSignalled to avoid potential race. (fhandler_socket::wait_for_events): Set signal_arrived event using set_thread_waiting(). (fhandler_socket::close): Use cygwait for the case of just waiting 10 ms for a signal. * fhandler_tape.cc (fhandler_dev_tape::_lock): Use cancelable_wait rather than WFMO. Redo switch/case tests accordingly. * fhandler_termios.cc (fhandler_termios::bg_check): Use cygwait for case of just waiting 0 ms for a potential signal. * fhandler_tty.cc (fhandler_pty_master::process_slave_output): Use cancelable_wait rather than WFSO. * fhandler_windows.cc (fhandler_windows::read): Set per-thread signal_arrived via set_thread_waiting(). * flock.cc (lf_setlock): Ditto. * select.cc (pselect): Ditto. Set per-thread signal_arrived using set_thread_waiting(). * gendef: Don't special case handling of _cygtls::sig for threads. * gentls_offsets: Use #pragma once in tlsoffsets.h. * ntdll.h: Use #pragma once. * poll.cc: Reflect set_signal_mask() argument reordering. * posix_ipc.cc (ipc_mutex_lock): Use cancelable_wait rather than WFMO. (ipc_cond_timedwait): Set perl-thread signal arrived using set_thread_waiting(). * security.h: Use #pragma once. * signal.cc (abort): Reflect set_signal_mask() argument reordering. (clock_nanosleep): Ditto. Change call to cancelable_wait to properly specify handling of cancel and interrupt. (sigwaitinfo): Remove handling of per-thread event in favor of per-thread signal_arrived. Use cancelable_wait rather than WFSO. * sigproc.cc (signal_arrived): Delete definition. (create_signal_arrived): Ditto. * sigproc.h (signal_arrived): Delete declaration. (set_signal_mask): Avoid defining as a "C" function. Don't conditionally declare. (create_signal_arrived): Delete declaration. * syscalls.cc (rename): Use cygwait() rather than WFSO. * thread.h (fast_mutex::lock): Use cw_infinite rather than LARGE_NULL. * wait.cc (wait4): Ditto. * thread.cc (pthread_mutex::lock): Ditto. (pthread::join): Ditto. (semaphore::_wait): Ditto. (pthread_kill): Remove set_threadkill() accommodation. * tlsoffsets.h: Regenerate.
2012-07-22 06:58:20 +08:00
#include "pinfo.h"
Eliminate use of sigframe and sigthread throughout. * Makefile.in (DLL_OFILES): Add sigfe.o. Remove reliance on cygwin.def from cygwin0.dll dependency since dependence on sigfe.o implies that. Generate def file on the fly using 'gendef'. * configure.in: Don't auto-generate cygwin.def. * configure: Regenerate. * cygwin.din: Add SIGFE stuff where appropriate. * dcrt0.cc (dll_crt0_1): Initialize cygwin tls early in process startup. Set _main_tls to address of the main thread's cygwin tls. * debug.h: Remove now unneeded WFSO and WFMO declarations. * exceptions.cc (_last_thread): Define. (set_thread_state_for_signals): New function. (reset_thread_exception_for_signals): Ditto. (init_thread_for_signals): Ditto. (delete_thread_for_signals): Ditto. (capture_thread_for_signals): Ditto. (handle_exceptions): Set return address explicitly for exceptions prior to calling sig_send. (interrupt_on_return): Eliminate. (setup_handler): Add preliminary implementation for dealing with thread-specific signals by querying _main_tls. (signal_exit): Use cygthread::main_thread_id instead of mainthread.id. (call_signal_handler_now): For now, just handle the main thread. * fork.cc (vfork): Save and restore main _my_tls. * gendef: New file. Generates def file and sigfe.s file. * gentls_offsets: New file. Generates offsets for perl to use in sigfe.s. * how-signals-work.txt: Mention that info is obsolete. * init.cc (dll_entry): Initialize cygwin tls storage here. * miscfuncs.cc (low_priority_sleep): Make a C function for easier calling from asm. * perthread.h (vfork_save::tls): New element. * signal.cc (nanosleep): Replace previous use of sigframe.call_signal_handler_now with straight call to call_signal_handler_now. (abort): Ditto. * syscalls.cc (readv): Ditto. * termios.cc (tcsetattr): Ditto. * wait.cc (wait4): Ditto. * sigproc.cc (sig_dispatch_pending): Ditto. (sig_send): Ditto. * sigproc.h: Declare call_signal_handler_now. * thread.cc (pthread::thread_init_wrapper): Initialize cygwin tls. Remove obsolete and unworking signal stuff. * thread.h (verifyable_object::sigs): Eliminate. (verifyable_object::sigmask): Eliminate. (verifyable_object::sigtodo): Eliminate. (verifyable_object::exit): Make attribute noreturn. (verifyable_object::thread_init_wrapper): Ditto. (pthread_null::exit): Ditto. * winbase.h (__stackbase): Always define. * winsup.h (low_priority_sleep): Declare as a "C" function. * include/cygwin/version.h: Bump API version to reflect sigwait export. * include/sys/queue.h: Protect SLIST_ENTRY from previous declaration. * signal.cc (sigwait): Implement. * select.cc (fhandler_base::ready_for_read): Add debugging output. * devices.h: Define more device pointers via their storage. * devices.in: Don't parse things like /dev/inet/tcp, as they really have no meaning. * devices.cc: Regenerate. * gendevices: Set proper protection for output file. * cygtls.h: New file. * gendef: New file. * gentls_offsets: New file. * tlsoffsets.h: New file. Autogenerated. * config/i386/longjmp.c: Remove. File subsumed by gendef output. * config/i386/makefrag: Remove obsolete file. * fhandler.cc: Remove spurious access_worker declaration. * spawn.cc (spawnve): Make debugging output more accurate. * cygwin-gperf: Remove. * devices.cc: Remove.
2003-11-29 04:55:59 +08:00
#include "sigproc.h"
#include "shared_info.h"
#include "perprocess.h"
#include "path.h"
#include "fhandler.h"
#include "dtable.h"
#include "cygheap.h"
#include "child_info.h"
#include "ntdll.h"
#include "exception.h"
#include "posix_timer.h"
#include "gcc_seh.h"
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/* Define macros for CPU-agnostic register access. The _CX_foo
macros are for access into CONTEXT, the _MC_foo ones for access into
mcontext. The idea is to access the registers in terms of their job,
not in terms of their name on the given target. */
2013-04-23 17:44:36 +08:00
#ifdef __x86_64__
#define _CX_instPtr Rip
#define _CX_stackPtr Rsp
#define _CX_framePtr Rbp
/* For special register access inside mcontext. */
#define _MC_retReg rax
#define _MC_instPtr rip
#define _MC_stackPtr rsp
#define _MC_uclinkReg rbx /* MUST be callee-saved reg */
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#else
#error unimplemented for this target
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#endif
#define CALL_HANDLER_RETRY_OUTER 10
#define CALL_HANDLER_RETRY_INNER 10
#define DUMPSTACK_FRAME_LIMIT 32
Reduce stack pressure throughout Cygwin * dcrt0.cc (initial_env): Reduce size of local path buffers to PATH_MAX. Allocate debugger_command from process heap. (init_windows_system_directory): Very early initialize new global variable global_progname. * dll_init.cc (dll_list::alloc): Make path buffer static. Explain why. (dll_list::populate_deps): Use tmp_pathbuf for local path buffer. * exceptions.cc (debugger_command): Convert to PWCHAR. (error_start_init): Allocate debugger_command and fill with wide char strings. Only allocate if NULL. (try_to_debug): Just check if debugger_command is a NULL pointer to return. Drop conversion from char to WCHAR and drop local variable dbg_cmd. * globals.cc (global_progname): New global variable to store Windows application path. * pinfo.cc (pinfo_basic::pinfo_basic): Just copy progname over from global_progname. (pinfo::status_exit): Let path_conv create the POSIX path to avoid local buffer. * pseudo_reloc.cc (__report_error): Utilize global_progname, drop local buffer. * smallprint.cc (__small_vsprintf): Just utilize global_progname for %P format specifier. (__small_vswprintf): Ditto. * strace.cc (PROTECT): Change to reflect x being a pointer. Reformat. (CHECK): Ditto. Reformat. (strace::activate): Utilize global_progname, drop local buffer. Fix formatting. (strace::vsprntf): Reduce size of local progname buffer to NAME_MAX. Copy and, if necessary, convert only the last path component to progname. (strace_buf_guard): New muto. (buf): New static pointer. (strace::vprntf): Use buf under strace_buf_guard lock only. Allocate buffer space for buf on Windows heap. * wow64.cc (wow64_respawn_process): Utilize global_progname, drop local path buffer. Signed-off-by: Corinna Vinschen <corinna@vinschen.de>
2015-07-20 04:38:30 +08:00
PWCHAR debugger_command;
PWCHAR dumper_command;
extern uint8_t _sigbe;
extern uint8_t _sigdelayed_end;
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static BOOL ctrl_c_handler (DWORD);
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static const struct
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{
NTSTATUS code;
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const char *name;
} status_info[] =
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{
#define X(s) s, #s
{ X (STATUS_ABANDONED_WAIT_0) },
{ X (STATUS_ACCESS_VIOLATION) },
{ X (STATUS_ARRAY_BOUNDS_EXCEEDED) },
{ X (STATUS_BREAKPOINT) },
{ X (STATUS_CONTROL_C_EXIT) },
{ X (STATUS_DATATYPE_MISALIGNMENT) },
{ X (STATUS_FLOAT_DENORMAL_OPERAND) },
{ X (STATUS_FLOAT_DIVIDE_BY_ZERO) },
{ X (STATUS_FLOAT_INEXACT_RESULT) },
{ X (STATUS_FLOAT_INVALID_OPERATION) },
{ X (STATUS_FLOAT_OVERFLOW) },
{ X (STATUS_FLOAT_STACK_CHECK) },
{ X (STATUS_FLOAT_UNDERFLOW) },
{ X (STATUS_GUARD_PAGE_VIOLATION) },
{ X (STATUS_ILLEGAL_INSTRUCTION) },
{ X (STATUS_INTEGER_DIVIDE_BY_ZERO) },
{ X (STATUS_INTEGER_OVERFLOW) },
{ X (STATUS_INVALID_DISPOSITION) },
{ X (STATUS_IN_PAGE_ERROR) },
{ X (STATUS_NONCONTINUABLE_EXCEPTION) },
{ X (STATUS_NO_MEMORY) },
{ X (STATUS_PENDING) },
{ X (STATUS_PRIVILEGED_INSTRUCTION) },
{ X (STATUS_SINGLE_STEP) },
{ X (STATUS_STACK_OVERFLOW) },
{ X (STATUS_TIMEOUT) },
{ X (STATUS_USER_APC) },
{ X (STATUS_WAIT_0) },
{ 0, 0 }
#undef X
};
/* Initialization code. */
void
init_console_handler (bool install_handler)
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{
BOOL res;
* child_info.h (CURR_CHILD_INFO_MAGIC): Regenerate. (child_info::retry): Move here from fork subclass. (child_info::exit_code): New field. (child_info::retry_count): Max retry count for process start. (child_info::proc_retry): Declare new function. (child_info_fork::retry): Move to parent. (child_info_fork::fork_retry): Ditto. * dcrt0.cc (child_info::fork_retry): Rename and move. (child_info_fork::handle_failure): Move. (dll_crt0_0): Initialize console handler based on whether we have a controlling tty or not. Avoid nonsensical check for fork where it can never occur. * environ.cc (set_proc_retry): Rename from set_fork_retry. Set retry_count in child_info. (parse_thing): Reflect above change. * exceptions.cc (dummy_ctrl_c_handler): Remove unused variable name. (ctrl_c_handler): Always return TRUE for the annoying CTRL_LOGOFF_EVENT. * fhandler_termios.cc (fhandler_termios::tcsetpgrp): Remove call to init_console_handler. * fhandler_tty.cc (fhandler_tty_slave::open): Just call mange_console_count here and let it decide what to do with initializing console control handling. * fork.cc (fork_retry): Remove definition. (frok::parent): Define static errbuf and use in error messages (not thread safe yet). Close pi.hThread as soon as possible. Protect pi.hProcess as soon as possible. Don't set retry_count. That happens automatically in the constructor now. Accommodate name change from fork_retry to proc_retry. * init.cc (dll_entry): Turn off ctrl-c handling early until we know how it is supposed to be handled. * pinfo.cc (_pinfo::dup_proc_pipe): Remember original proc pipe value for failure error message. Tweak debug message slightly. * sigproc.cc (child_info::retry_count): Define. (child_info::child_info): Initialize retry count. (child_info::sync): Set exit code if process dies before synchronization. (child_info::proc_retry): Rename from child_info_fork::fork_retry. Use previously derived exit code. Be more defensive about what is classified as an error exit. (child_info_fork::handle_failure): Move here from dcrt0.cc. * spawn.cc (spawn_guts): Maintain error mode when starting new process to avoid annoying pop ups. Move deimpersonate call within new loop. Move envblock freeing to end. Loop if process dies prematurely with bad exit code. * syscalls.cc (init_console_handler): Remove hopefully unneeded call to init_console_handler.
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SetConsoleCtrlHandler (ctrl_c_handler, FALSE);
SetConsoleCtrlHandler (NULL, FALSE);
if (install_handler)
res = SetConsoleCtrlHandler (ctrl_c_handler, TRUE);
else
res = SetConsoleCtrlHandler (NULL, TRUE);
if (!res)
system_printf ("SetConsoleCtrlHandler failed, %E");
}
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extern "C" void
error_start_init (const char *buf)
{
if (!buf || !*buf)
Reduce stack pressure throughout Cygwin * dcrt0.cc (initial_env): Reduce size of local path buffers to PATH_MAX. Allocate debugger_command from process heap. (init_windows_system_directory): Very early initialize new global variable global_progname. * dll_init.cc (dll_list::alloc): Make path buffer static. Explain why. (dll_list::populate_deps): Use tmp_pathbuf for local path buffer. * exceptions.cc (debugger_command): Convert to PWCHAR. (error_start_init): Allocate debugger_command and fill with wide char strings. Only allocate if NULL. (try_to_debug): Just check if debugger_command is a NULL pointer to return. Drop conversion from char to WCHAR and drop local variable dbg_cmd. * globals.cc (global_progname): New global variable to store Windows application path. * pinfo.cc (pinfo_basic::pinfo_basic): Just copy progname over from global_progname. (pinfo::status_exit): Let path_conv create the POSIX path to avoid local buffer. * pseudo_reloc.cc (__report_error): Utilize global_progname, drop local buffer. * smallprint.cc (__small_vsprintf): Just utilize global_progname for %P format specifier. (__small_vswprintf): Ditto. * strace.cc (PROTECT): Change to reflect x being a pointer. Reformat. (CHECK): Ditto. Reformat. (strace::activate): Utilize global_progname, drop local buffer. Fix formatting. (strace::vsprntf): Reduce size of local progname buffer to NAME_MAX. Copy and, if necessary, convert only the last path component to progname. (strace_buf_guard): New muto. (buf): New static pointer. (strace::vprntf): Use buf under strace_buf_guard lock only. Allocate buffer space for buf on Windows heap. * wow64.cc (wow64_respawn_process): Utilize global_progname, drop local path buffer. Signed-off-by: Corinna Vinschen <corinna@vinschen.de>
2015-07-20 04:38:30 +08:00
return;
if (!debugger_command &&
!(debugger_command = (PWCHAR) malloc ((2 * NT_MAX_PATH + 20)
* sizeof (WCHAR))))
return;
PWCHAR cp = debugger_command
+ sys_mbstowcs (debugger_command, NT_MAX_PATH, buf) - 1;
cp = wcpcpy (cp, L" \"");
wcpcpy (cp, global_progname);
for (PWCHAR p = wcschr (cp, L'\\'); p; p = wcschr (p, L'\\'))
*p = L'/';
wcscat (cp, L"\"");
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}
extern "C" void
dumper_init (void)
{
WCHAR dll_dir[PATH_MAX];
if (!GetModuleFileNameW (cygwin_hmodule, dll_dir, PATH_MAX))
return;
/* Strip off last path component ("\\cygwin1.dll") */
PWCHAR w = wcsrchr (dll_dir, L'\\');
if (!w)
return;
*w = L'\0';
/* Calculate the length of the command, allowing for an appended DWORD PID and
terminating null */
int cmd_len = 1 + wcslen(dll_dir) + 11 + 5 + 1 + wcslen(global_progname) + 1 + 10 + 1;
if (cmd_len > 32767)
{
/* If this comes to more than the 32,767 characters CreateProcess() can
accept, we can't work, so don't set dumper_command */
return;
}
dumper_command = (PWCHAR) malloc(cmd_len * sizeof (WCHAR));
PWCHAR cp = dumper_command;
cp = wcpcpy (cp, L"\"");
cp = wcpcpy (cp, dll_dir);
cp = wcpcpy (cp, L"\\dumper.exe");
cp = wcpcpy (cp, L"\" -n ");
cp = wcpcpy (cp, L"\"");
cp = wcpcpy (cp, global_progname);
wcscat (cp, L"\"");
}
void
cygwin_exception::open_stackdumpfile ()
{
/* If we have no executable name, or if the CWD handle is NULL,
which means, the CWD is a virtual path, don't even try to open
a stackdump file. */
if (myself->progname[0] && cygheap->cwd.get_handle ())
{
const WCHAR *p;
/* write to progname.stackdump if possible */
if (!myself->progname[0])
p = L"unknown";
else if ((p = wcsrchr (myself->progname, L'\\')))
p++;
else
p = myself->progname;
WCHAR corefile[wcslen (p) + sizeof (".stackdump")];
wcpcpy (wcpcpy(corefile, p), L".stackdump");
UNICODE_STRING ucore;
OBJECT_ATTRIBUTES attr;
/* Create the UNICODE variation of <progname>.stackdump. */
RtlInitUnicodeString (&ucore, corefile);
/* Create an object attribute which refers to <progname>.stackdump
Add case-sensitivity. Unconditionally handle mount points case-sensitive. Unconditionally handle virtual paths case-sensitive. Unconditionally handle registry paths case-insensitive. Otherwise, accommodate case-sensitivity of given path throughout. * cygheap.cc (cygheap_root::set): Get additional caseinsensitive parameter and store it. * cygheap.h (struct cygheap_root_mount_info): Add member caseinsensitive. * dlfcn.cc (get_full_path_of_dll): Drop PC_NOFULL parameter from call to path_conv::check. * environ.cc (pcheck_case): Remove. (check_case_init): Remove. (known): Drop "check_case" option. * exceptions.cc (open_stackdumpfile): Add comment. * fhandler.cc (fhandler_base::get_default_fmode): Call pathmatch instead of strcasematch. * fhandler_disk_file.cc: Accommodate case-sensitivity of given path throughout. (__DIR_mounts::check_mount): Unconditionally check virtual paths case-sensitive. (fhandler_disk_file::link): Drop case clash handling. (fhandler_disk_file::open): Ditto. (fhandler_disk_file::readdir_helper): Drop managed mount code. * mount.cc: Remove managed mount code and datastructures. (struct opt): Remove "managed" option. Add "posix=0" and "posix=1" options. (fillout_mntent): Remove "managed" output. Add "posix" output. * path.cc (struct symlink_info): Remove case_clash member and case_check method. (pcheck_case): Remove. (path_prefix_p): Take additional bool parameter "caseinsensitive". (pathnmatch): Ditto. (pathmatch): Ditto. (mkrelpath): Ditto. (fs_info::update): Set caseinsensitive flag according to file system name and FILE_CASE_SENSITIVE_SEARCH flag. Add comment. (tfx_chars_managed): Remove. (transform_chars): Drop "managed" parameter. Always use tfx_chars. (get_nt_native_path): Drop "managed" parameter. Make sure drive letters are always upper case. (getfileattr): Change second parameter to denote caseinsensitivity. (path_conv::check): Initialize caseinsensitive to OBJ_CASE_INSENSITIVE. Set caseinsensitive according to global obcaseinsensitive flag, file system case sensitivity and MOUNT_NOPOSIX mount flag. Drop case_clash and all the related code. (symlink_worker): Drop case clash handling. (symlink_info::set): Drop setting case_clash. (symlink_info::case_check): Remove. (cwdstuff::set): Add comment. (etc::init): Take path_conv instead of PUNICODE_STRING as parameter to allow case sensitivity. * path.h (enum pathconv_arg): Drop PC_SYM_IGNORE. (enum case_checking): Remove. (enum path_types): Drop PATH_ENC, add PATH_NOPOSIX flag. (struct fs_info): Add caseinsensitive flag and accessor methods. (class path_conv): Add caseinsensitive member and define objcaseinsensitive method. Drop case_clash member and isencoded method. (pathmatch): Change prototype according to above change. (pathnmatch): Ditto. (path_prefix_p): Ditto. (get_nt_native_path): Ditto. (class etc): Ditto. (fnunmunge): Remove prototype. * shared.cc (shared_info::init_obcaseinsensitive): Initialize obcaseinsensitive flag from obcaseinsensitive registry value. (shared_info::initialize): Call init_obcaseinsensitive here by the first process creating the shared memory. * shared_info.h (mount_item::fnmunge): Remove. (shared_info::obcaseinsensitive): Rename from obcaseinsensitivity. (shared_info::init_obcaseinsensitive): Declare. * syscalls.cc (try_to_bin): Add comment. * include/sys/mount.h (MOUNT_ENC): Remove flag. (MOUNT_NOPOSIX): Add flag.
2008-07-17 04:20:45 +08:00
in Cygwin's cwd. Stick to caseinsensitivity. */
InitializeObjectAttributes (&attr, &ucore, OBJ_CASE_INSENSITIVE,
cygheap->cwd.get_handle (), NULL);
IO_STATUS_BLOCK io;
NTSTATUS status;
/* Try to open it to dump the stack in it. */
status = NtCreateFile (&h, GENERIC_WRITE | SYNCHRONIZE, &attr, &io,
NULL, FILE_ATTRIBUTE_NORMAL, 0, FILE_OVERWRITE_IF,
FILE_SYNCHRONOUS_IO_NONALERT
| FILE_OPEN_FOR_BACKUP_INTENT, NULL, 0);
if (NT_SUCCESS (status))
{
* child_info.h (child_info_spawn::hexec_proc): Eliminate. * dcrt0.cc (dll_crt0_0): Remove hexec_proc stuff. * fork.cc (fork_child): Remove call to pinfo_fixup_after_fork. * pinfo.cc (set_myself): Close and zero pid_handle if set. (pinfo_fixup_after_fork): Delete. (proc_waiter): Don't close vchild.hProcess here. Do that when we are remove the vchild from procs. Save hProcess as pid_handle only on first reparent operation. (pinfo::wait): Don't set pid_handle here. (pinfo::alert_parent): Always try to send signal. If unsuccessful then close and zero wr_proc_pipe. * pinfo.h (pinfo::pinfo): Make sure that appropriate parts of the class are zeroed on construction. (pinfo::alert_parent): Take char argument. (pinfo_fixup_after_fork): Delete declaration. (hexec_proc): Ditto. * sigproc.cc (remove_proc): Close pid_handle and hProcess if appropriate. * spawn.cc (spawn_guts): Set cygheap->pid_handle on first exec. * cygheap.h (init_cygheap::pid_handle): New element. * pinfo.cc (set_myself): Clear previously existing cygheap->pid_handle when a new process has been started. (pinfo::wait): Make sure that a handle to the newly forked/spawned process is kept around so that the pid will not be reused. * pinfo.h (_pinfo::pid_handle): Move. (pinfo::pid_handle): to here. * spawn.cc (spawn_guts): Create a pid_handle in cygheap prior to spawning to ensure that the pid does not get reused during the lifetime of the "cygwin pid". * pinfo.h (pinfo::alert_parent): New function. * exceptions.cc (sig_handle_tty_stop): Use alert_parent to send "signals" to parent. * fork.cc (fork_parent): Don't close pi.hProcess. Let the waiter thread do that. * pinfo.cc (proc_waiter): Detect case where process exits without setting the exit code and use value from GetExitCodeProcess. Reluctantly implement __SIGREPARENT. (pinfo::alert_parent): Define. * sigproc.h (__SIGREPARENT): New enum. * spawn.cc (spawn_guts): Send reparent signal to parent on exec. Always create process in suspended state to avoid races. Remove cygthread.h in favor of cygtls.h throughout since cygtls now includes cygthread.h. Eliminate ppid_handle usage throughout. * child_info.h: Regenerate magic number (child_info): Remove pppid_handle. * cygthread.h (cygthread::release): New method. Frees thread without waiting. * cygthread.cc (cygthread::stub): Set _ctinfo in _mytls to point to information for executing thread. Don't call SetEvent if thread is no longer in use. (cygthread::simplestub): Ditto. * cygtls.h (_cygtls::_ctinfo): New element contains pointer to information about executing cygthread, if any. * dcrt0.cc: Remove last vestiges of per_thread stuff. (dll_crt0_0): Ditto. Remove accommodation for ppid_handle. (do_exit): Remove obsolete reparenting test. (_exit): Exit with a more SUSv3-like exit value. * dtable.cc (dtable::stdio_init): Check for myself->cygstarted rather than myself->ppid_handle to see if we were started by a cygwin process. * exceptions.cc (open_stackdumpfile): Ditto. (handle_exceptions): Ditto. (ctrl_c_handler): Ditto. (sig_handle_tty_stop): Ditto. Let parent send signal to itself on STOP. (sigpacket::process): Comment out vfork test. (signal_exit): Use more SUSv3-like exit value on signal. * external.cc (fillout_pinfo): Don't set hProcess. * fork.cc: Remove VFORK cruft. (per_thread::set): Delete. (fork_child): Remove perthread stuff. (fork_parent): Remove obsolete subproc_init. Accommodate new method for tracking subprocesses. * pinfo.cc (set_myself): Accommodate new pinfo/_pinfo layout. Set some things here that used to be set in wait_sig. (_pinfo::exit): Set exitcode here. Close process pipe. (_pinfo::commune_send): Accommodeate new pinfo/_pinfo layout. (proc_waiter): New function. Waits, in a thread for subprocess to go away. (pinfo::wait): New function. Initialization for proc_waiter. * pinfo.h (_pinfo::exitcode): New element. (_pinfo::cygstarted): Ditto. (_pinfo::wr_proc_pipe): Ditto. (_pinfo::ppid_handle): Delete. (_pinfo::hProcess): Delete. (_pinfo::lock): Delete. (pinfo::hProcess): New element. (pinfo::lock): Ditto. (pinfo::wait): Declare new function. (pinfo::preserve): Define new function. * sigproc.cc: Remove old stuff from wait_subproc thread based method. (zombies): Remove. (procs): New. (my_parent_is_alive): Just check that the parent pid exists. (mychild): Just use pinfo methods to determine if child is mine. (proc_subproc): Revamp PROC_ADDCHILD to use pinfo::wait. Remove PROC_CHILDTERMINATED logic. Use different method to remove processes from list when SIGCHLD == SIG_IGN. (proc_terminate): Gut. (subproc_init): Delete. (init_child_info): Remove setting of pppid_handle. (checkstate): Revamp to only scan procs array. (remove_proc): Rename from remove_zombie. Don't close hProcess or pid_handle. Don't release memory if it's myself. (stopped_or_terminated): Change logic to handle new consolidated proc/zombie array. (wait_subproc): Delete. * sigproc.h: Remove obsolete EXIT_* defines. (subproc_init): Remove declaration. * spawn.cc (spawn_guts): Remove reparenting stuff. Use standard wait logic to wait for child if started from a non-cygwin process. * tlsoffsets.h: Regenerate. * tty.cc (tty_init): Check for myself->cygstarted rather than myself->ppid_handle to see if we were started by a cygwin process. * include/sys/signal.h (external_pinfo::exitcode): Replace hProcess. * include/sys/wait.h (WCOREDUMP): Define. * fhandler_tty.cc (fhandler_tty_slave::read): Add debugging output for timeout case. * signal.cc (abort): Flag that we are exiting with the ABORT signal.
2004-11-26 12:15:10 +08:00
if (!myself->cygstarted)
system_printf ("Dumping stack trace to %S", &ucore);
else
debug_printf ("Dumping stack trace to %S", &ucore);
SetStdHandle (STD_ERROR_HANDLE, h);
}
}
}
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/* Utilities for dumping the stack, etc. */
* cygtls.h (_cygtls::signal_exit): Delete from class. * exception.h (cygwin_exception): New class. (cygwin_exception::dumpstack): Declare new function. (cygwin_exception::context): Ditto. (cygwin_exception::dump_exception): Ditto. * exceptions.cc (cygwin_exception::dump_exception): Move into cygwin_exception class. Accommodate new variable names. (cygwin_exception::dumpstack): Ditto stackdump -> dumpstack. (exception::handle): Move andreas processing earlier. Defer signal processing decisions to the signal thread where they belong. Pass exception information to sig_send via new siginfo_t si_cyg field. (ctrl_c_handler): Wait for SIGHUP signal to be processed since it could cause a process exit and we don't want races with thread exit lock. (signal_exit): Move back here from sigproc.cc. Modify arguments and remove from sigpacket class. Decide when to dump core based on signal type. (sigpacket::process): Handle exiting signals in context of threads rather than in the signal thread. Signal debugger on non-Windows signals. Remove setup_signal_exit call. * sigproc.cc (no_signals_available): Remove argument. (signal_exit_code): Delete. (close_my_readsig): Ditto. (_cygtls::signal_exit): Move to exceptions.cc. (sigproc_terminate): Don't attempt to terminate signal thread. (setup_signal_exit): Delete. (exit_thread): Use new si_cyg entry in siginfo_t. (sig_send): Just use empty initializer for si. Accommodate change in no_signals_available argument. (wait_sig): Remove attempt to "go asynchronous" on process exit. Delete __SIGEXIT handling. Don't ever exit. * sigproc.h: Remove __SIGEXIT from signal enum. Renumber. * include/cygwin/signal.h (siginfo_t): Add si_cyg entry.
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void
cygwin_exception::dump_exception ()
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{
const char *exception_name = NULL;
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for (int i = 0; status_info[i].name; i++)
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{
if (status_info[i].code == (NTSTATUS) e->ExceptionCode)
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{
exception_name = status_info[i].name;
break;
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}
}
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#ifdef __x86_64__
if (exception_name)
small_printf ("Exception: %s at rip=%012X\r\n", exception_name, ctx->Rip);
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else
small_printf ("Signal %d at rip=%012X\r\n", e->ExceptionCode, ctx->Rip);
small_printf ("rax=%016X rbx=%016X rcx=%016X\r\n",
ctx->Rax, ctx->Rbx, ctx->Rcx);
small_printf ("rdx=%016X rsi=%016X rdi=%016X\r\n",
ctx->Rdx, ctx->Rsi, ctx->Rdi);
small_printf ("r8 =%016X r9 =%016X r10=%016X\r\n",
ctx->R8, ctx->R9, ctx->R10);
small_printf ("r11=%016X r12=%016X r13=%016X\r\n",
ctx->R11, ctx->R12, ctx->R13);
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small_printf ("r14=%016X r15=%016X\r\n", ctx->R14, ctx->R15);
small_printf ("rbp=%016X rsp=%016X\r\n", ctx->Rbp, ctx->Rsp);
small_printf ("program=%W, pid %u, thread %s\r\n",
myself->progname, myself->pid, mythreadname ());
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small_printf ("cs=%04x ds=%04x es=%04x fs=%04x gs=%04x ss=%04x\r\n",
ctx->SegCs, ctx->SegDs, ctx->SegEs, ctx->SegFs,
ctx->SegGs, ctx->SegSs);
#else
#error unimplemented for this target
#endif
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}
/* A class for manipulating the stack. */
class stack_info
{
int walk (); /* Uses the "old" method */
char *next_offset () {return *((char **) sf.AddrFrame.Offset);}
bool needargs;
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PUINT_PTR dummy_frame;
CONTEXT c;
UNWIND_HISTORY_TABLE hist;
__tlsstack_t *sigstackptr;
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public:
STACKFRAME sf; /* For storing the stack information */
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void init (PUINT_PTR, bool, PCONTEXT); /* Called the first time that stack info is needed */
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/* Postfix ++ iterates over the stack, returning zero when nothing is left. */
int operator ++(int) { return walk (); }
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};
/* The number of parameters used in STACKFRAME */
#define NPARAMS (sizeof (thestack.sf.Params) / sizeof (thestack.sf.Params[0]))
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/* This is the main stack frame info for this process. */
static NO_COPY stack_info thestack;
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/* Initialize everything needed to start iterating. */
void
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stack_info::init (PUINT_PTR framep, bool wantargs, PCONTEXT ctx)
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{
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memset (&hist, 0, sizeof hist);
if (ctx)
memcpy (&c, ctx, sizeof c);
else
{
memset (&c, 0, sizeof c);
c.ContextFlags = CONTEXT_ALL;
}
sigstackptr = _my_tls.stackptr;
memset (&sf, 0, sizeof (sf));
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if (ctx)
sf.AddrFrame.Offset = (UINT_PTR) framep;
else
{
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dummy_frame = framep;
sf.AddrFrame.Offset = (UINT_PTR) &dummy_frame;
}
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if (framep)
sf.AddrReturn.Offset = framep[1];
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sf.AddrFrame.Mode = AddrModeFlat;
needargs = wantargs;
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}
extern "C" void _cygwin_exit_return ();
static inline void
__unwind_single_frame (PCONTEXT ctx)
{
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PRUNTIME_FUNCTION f;
ULONG64 imagebase;
UNWIND_HISTORY_TABLE hist = {0};
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DWORD64 establisher;
PVOID hdl;
f = RtlLookupFunctionEntry (ctx->_CX_instPtr, &imagebase, &hist);
if (f)
RtlVirtualUnwind (0, imagebase, ctx->_CX_instPtr, f, ctx, &hdl,
&establisher, NULL);
else
{
ctx->_CX_instPtr = *(ULONG_PTR *) ctx->_CX_stackPtr;
ctx->_CX_stackPtr += 8;
}
}
/* Walk the stack.
On 32 bit we're doing this by looking at successive stored 'ebp' frames.
This is not foolproof. */
int
stack_info::walk ()
{
if (!c._CX_instPtr)
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return 0;
sf.AddrPC.Offset = c._CX_instPtr;
sf.AddrStack.Offset = c._CX_stackPtr;
sf.AddrFrame.Offset = c._CX_framePtr;
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if ((c._CX_instPtr >= (DWORD64)&_sigbe)
&& (c._CX_instPtr < (DWORD64)&_sigdelayed_end))
{
/* _sigbe and sigdelayed don't have SEH unwinding data, so virtually
unwind the tls sigstack */
c._CX_instPtr = sigstackptr[-1];
sigstackptr--;
return 1;
}
__unwind_single_frame (&c);
if (needargs && c._CX_instPtr)
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{
PULONG_PTR p = (PULONG_PTR) c._CX_stackPtr;
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for (unsigned i = 0; i < NPARAMS; ++i)
sf.Params[i] = p[i + 1];
}
return 1;
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}
/*
Walk the list of modules in the current process to find the one containing
'func_va'.
This implementation requires no allocation of memory and minimal system
calls, so it should be safe in the context of an exception handler.
*/
static char *
prettyprint_va (PVOID func_va)
{
static char buf[256];
buf[0] = '\0';
PLIST_ENTRY head = &NtCurrentTeb()->Peb->Ldr->InMemoryOrderModuleList;
for (PLIST_ENTRY x = head->Flink; x != head; x = x->Flink)
{
PLDR_DATA_TABLE_ENTRY mod = CONTAINING_RECORD (x, LDR_DATA_TABLE_ENTRY,
InMemoryOrderLinks);
if ((func_va < mod->DllBase) ||
(func_va > (PVOID)((DWORD_PTR)mod->DllBase + mod->SizeOfImage)))
continue;
__small_sprintf (buf, "%S+0x%x", &mod->BaseDllName,
(DWORD_PTR)func_va - (DWORD_PTR)mod->DllBase);
break;
}
return buf;
}
void
* cygtls.h (_cygtls::signal_exit): Delete from class. * exception.h (cygwin_exception): New class. (cygwin_exception::dumpstack): Declare new function. (cygwin_exception::context): Ditto. (cygwin_exception::dump_exception): Ditto. * exceptions.cc (cygwin_exception::dump_exception): Move into cygwin_exception class. Accommodate new variable names. (cygwin_exception::dumpstack): Ditto stackdump -> dumpstack. (exception::handle): Move andreas processing earlier. Defer signal processing decisions to the signal thread where they belong. Pass exception information to sig_send via new siginfo_t si_cyg field. (ctrl_c_handler): Wait for SIGHUP signal to be processed since it could cause a process exit and we don't want races with thread exit lock. (signal_exit): Move back here from sigproc.cc. Modify arguments and remove from sigpacket class. Decide when to dump core based on signal type. (sigpacket::process): Handle exiting signals in context of threads rather than in the signal thread. Signal debugger on non-Windows signals. Remove setup_signal_exit call. * sigproc.cc (no_signals_available): Remove argument. (signal_exit_code): Delete. (close_my_readsig): Ditto. (_cygtls::signal_exit): Move to exceptions.cc. (sigproc_terminate): Don't attempt to terminate signal thread. (setup_signal_exit): Delete. (exit_thread): Use new si_cyg entry in siginfo_t. (sig_send): Just use empty initializer for si. Accommodate change in no_signals_available argument. (wait_sig): Remove attempt to "go asynchronous" on process exit. Delete __SIGEXIT handling. Don't ever exit. * sigproc.h: Remove __SIGEXIT from signal enum. Renumber. * include/cygwin/signal.h (siginfo_t): Add si_cyg entry.
2013-01-03 02:34:06 +08:00
cygwin_exception::dumpstack ()
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{
static bool already_dumped;
* Throughout, use __try/__except/__endtry blocks, rather than myfault handler. * cygtls.cc (_cygtls::remove): Accommodate the fact that pathbufs has been moved from _local_storage to _cygtls. * cygtls.h (class tls_pathbuf): Add comment to hint to gendef usage of counters. Change type of counters to uint32_t for clarity. Remove _cygtls as friend class. (struct _local_storage): Move pathbufs from here... (struct _cygtls): ...to here, allowing to access it from _sigbe. (class san): Only define on 32 bit. Remove errno, _c_cnt and _w_cnt members. (san::setup): Drop parameter. Don't initialize removed members. (san::leave): Don't set removed members. (class myfault): Only define on 32 bit. (myfault::faulted): Only keep implementation not taking any parameter. Drop argument in call to sebastian.setup. (__try/__leave/__except/__endtry): Implement to support real SEH. For now stick to SJLJ on 32 bit. * dcrt0.cc (dll_crt0_0): Drop 64 bit call to exception::install_myfault_handler. * exception.h (exception_handler): Define with EXCEPTION_DISPOSITION as return type. (PDISPATCHER_CONTEXT): Define as void * on 32 bit. Define as pointer to _DISPATCHER_CONTEXT on 64 bit. (class exception): Define separately for 32 and 64 bit. (exception::myfault): Add handler for myfault SEH handling on 64 bit. (exception::exception): Fix mangled method name to account for change in type of last parameter. (exception::install_myfault_handler): Remove. * exceptions.cc (exception::myfault_handle): Remove. (exception::myfault): New SEH handler for 64 bit. * gendef (_sigbe): Set tls_pathbuf counters to 0 explicitely when returning to the caller. * ntdll.h: Move a comment to a better place. (struct _SCOPE_TABLE): Define on 64 bit. * thread.cc (verifyable_object_isvalid): Remove gcc 4.7 workaround. * tls_pbuf.cc (tls_pbuf): Fix to accommodate new place of pathbufs. (tls_pathbuf::destroy): Change type of loop variables to uint32_t. * tls_pbuf.h (class tmp_pathbuf): Change type of buffer counters to uint32_t. Accommodate new place of pathbufs. * tlsoffsets.h: Regenerate. * tlsoffsets64.h: Regenerate.
2014-08-22 17:21:33 +08:00
__try
{
if (already_dumped || cygheap->rlim_core == 0Ul)
return;
already_dumped = true;
open_stackdumpfile ();
* Throughout, use __try/__except/__endtry blocks, rather than myfault handler. * cygtls.cc (_cygtls::remove): Accommodate the fact that pathbufs has been moved from _local_storage to _cygtls. * cygtls.h (class tls_pathbuf): Add comment to hint to gendef usage of counters. Change type of counters to uint32_t for clarity. Remove _cygtls as friend class. (struct _local_storage): Move pathbufs from here... (struct _cygtls): ...to here, allowing to access it from _sigbe. (class san): Only define on 32 bit. Remove errno, _c_cnt and _w_cnt members. (san::setup): Drop parameter. Don't initialize removed members. (san::leave): Don't set removed members. (class myfault): Only define on 32 bit. (myfault::faulted): Only keep implementation not taking any parameter. Drop argument in call to sebastian.setup. (__try/__leave/__except/__endtry): Implement to support real SEH. For now stick to SJLJ on 32 bit. * dcrt0.cc (dll_crt0_0): Drop 64 bit call to exception::install_myfault_handler. * exception.h (exception_handler): Define with EXCEPTION_DISPOSITION as return type. (PDISPATCHER_CONTEXT): Define as void * on 32 bit. Define as pointer to _DISPATCHER_CONTEXT on 64 bit. (class exception): Define separately for 32 and 64 bit. (exception::myfault): Add handler for myfault SEH handling on 64 bit. (exception::exception): Fix mangled method name to account for change in type of last parameter. (exception::install_myfault_handler): Remove. * exceptions.cc (exception::myfault_handle): Remove. (exception::myfault): New SEH handler for 64 bit. * gendef (_sigbe): Set tls_pathbuf counters to 0 explicitely when returning to the caller. * ntdll.h: Move a comment to a better place. (struct _SCOPE_TABLE): Define on 64 bit. * thread.cc (verifyable_object_isvalid): Remove gcc 4.7 workaround. * tls_pbuf.cc (tls_pbuf): Fix to accommodate new place of pathbufs. (tls_pathbuf::destroy): Change type of loop variables to uint32_t. * tls_pbuf.h (class tmp_pathbuf): Change type of buffer counters to uint32_t. Accommodate new place of pathbufs. * tlsoffsets.h: Regenerate. * tlsoffsets64.h: Regenerate.
2014-08-22 17:21:33 +08:00
if (e)
dump_exception ();
* Throughout, use __try/__except/__endtry blocks, rather than myfault handler. * cygtls.cc (_cygtls::remove): Accommodate the fact that pathbufs has been moved from _local_storage to _cygtls. * cygtls.h (class tls_pathbuf): Add comment to hint to gendef usage of counters. Change type of counters to uint32_t for clarity. Remove _cygtls as friend class. (struct _local_storage): Move pathbufs from here... (struct _cygtls): ...to here, allowing to access it from _sigbe. (class san): Only define on 32 bit. Remove errno, _c_cnt and _w_cnt members. (san::setup): Drop parameter. Don't initialize removed members. (san::leave): Don't set removed members. (class myfault): Only define on 32 bit. (myfault::faulted): Only keep implementation not taking any parameter. Drop argument in call to sebastian.setup. (__try/__leave/__except/__endtry): Implement to support real SEH. For now stick to SJLJ on 32 bit. * dcrt0.cc (dll_crt0_0): Drop 64 bit call to exception::install_myfault_handler. * exception.h (exception_handler): Define with EXCEPTION_DISPOSITION as return type. (PDISPATCHER_CONTEXT): Define as void * on 32 bit. Define as pointer to _DISPATCHER_CONTEXT on 64 bit. (class exception): Define separately for 32 and 64 bit. (exception::myfault): Add handler for myfault SEH handling on 64 bit. (exception::exception): Fix mangled method name to account for change in type of last parameter. (exception::install_myfault_handler): Remove. * exceptions.cc (exception::myfault_handle): Remove. (exception::myfault): New SEH handler for 64 bit. * gendef (_sigbe): Set tls_pathbuf counters to 0 explicitely when returning to the caller. * ntdll.h: Move a comment to a better place. (struct _SCOPE_TABLE): Define on 64 bit. * thread.cc (verifyable_object_isvalid): Remove gcc 4.7 workaround. * tls_pbuf.cc (tls_pbuf): Fix to accommodate new place of pathbufs. (tls_pathbuf::destroy): Change type of loop variables to uint32_t. * tls_pbuf.h (class tmp_pathbuf): Change type of buffer counters to uint32_t. Accommodate new place of pathbufs. * tlsoffsets.h: Regenerate. * tlsoffsets64.h: Regenerate.
2014-08-22 17:21:33 +08:00
int i;
2000-02-18 03:38:33 +08:00
* Throughout, use __try/__except/__endtry blocks, rather than myfault handler. * cygtls.cc (_cygtls::remove): Accommodate the fact that pathbufs has been moved from _local_storage to _cygtls. * cygtls.h (class tls_pathbuf): Add comment to hint to gendef usage of counters. Change type of counters to uint32_t for clarity. Remove _cygtls as friend class. (struct _local_storage): Move pathbufs from here... (struct _cygtls): ...to here, allowing to access it from _sigbe. (class san): Only define on 32 bit. Remove errno, _c_cnt and _w_cnt members. (san::setup): Drop parameter. Don't initialize removed members. (san::leave): Don't set removed members. (class myfault): Only define on 32 bit. (myfault::faulted): Only keep implementation not taking any parameter. Drop argument in call to sebastian.setup. (__try/__leave/__except/__endtry): Implement to support real SEH. For now stick to SJLJ on 32 bit. * dcrt0.cc (dll_crt0_0): Drop 64 bit call to exception::install_myfault_handler. * exception.h (exception_handler): Define with EXCEPTION_DISPOSITION as return type. (PDISPATCHER_CONTEXT): Define as void * on 32 bit. Define as pointer to _DISPATCHER_CONTEXT on 64 bit. (class exception): Define separately for 32 and 64 bit. (exception::myfault): Add handler for myfault SEH handling on 64 bit. (exception::exception): Fix mangled method name to account for change in type of last parameter. (exception::install_myfault_handler): Remove. * exceptions.cc (exception::myfault_handle): Remove. (exception::myfault): New SEH handler for 64 bit. * gendef (_sigbe): Set tls_pathbuf counters to 0 explicitely when returning to the caller. * ntdll.h: Move a comment to a better place. (struct _SCOPE_TABLE): Define on 64 bit. * thread.cc (verifyable_object_isvalid): Remove gcc 4.7 workaround. * tls_pbuf.cc (tls_pbuf): Fix to accommodate new place of pathbufs. (tls_pathbuf::destroy): Change type of loop variables to uint32_t. * tls_pbuf.h (class tmp_pathbuf): Change type of buffer counters to uint32_t. Accommodate new place of pathbufs. * tlsoffsets.h: Regenerate. * tlsoffsets64.h: Regenerate.
2014-08-22 17:21:33 +08:00
thestack.init (framep, 1, ctx); /* Initialize from the input CONTEXT */
small_printf ("Stack trace:\r\nFrame Function Args\r\n");
for (i = 0; i < DUMPSTACK_FRAME_LIMIT && thestack++; i++)
* Throughout, use __try/__except/__endtry blocks, rather than myfault handler. * cygtls.cc (_cygtls::remove): Accommodate the fact that pathbufs has been moved from _local_storage to _cygtls. * cygtls.h (class tls_pathbuf): Add comment to hint to gendef usage of counters. Change type of counters to uint32_t for clarity. Remove _cygtls as friend class. (struct _local_storage): Move pathbufs from here... (struct _cygtls): ...to here, allowing to access it from _sigbe. (class san): Only define on 32 bit. Remove errno, _c_cnt and _w_cnt members. (san::setup): Drop parameter. Don't initialize removed members. (san::leave): Don't set removed members. (class myfault): Only define on 32 bit. (myfault::faulted): Only keep implementation not taking any parameter. Drop argument in call to sebastian.setup. (__try/__leave/__except/__endtry): Implement to support real SEH. For now stick to SJLJ on 32 bit. * dcrt0.cc (dll_crt0_0): Drop 64 bit call to exception::install_myfault_handler. * exception.h (exception_handler): Define with EXCEPTION_DISPOSITION as return type. (PDISPATCHER_CONTEXT): Define as void * on 32 bit. Define as pointer to _DISPATCHER_CONTEXT on 64 bit. (class exception): Define separately for 32 and 64 bit. (exception::myfault): Add handler for myfault SEH handling on 64 bit. (exception::exception): Fix mangled method name to account for change in type of last parameter. (exception::install_myfault_handler): Remove. * exceptions.cc (exception::myfault_handle): Remove. (exception::myfault): New SEH handler for 64 bit. * gendef (_sigbe): Set tls_pathbuf counters to 0 explicitely when returning to the caller. * ntdll.h: Move a comment to a better place. (struct _SCOPE_TABLE): Define on 64 bit. * thread.cc (verifyable_object_isvalid): Remove gcc 4.7 workaround. * tls_pbuf.cc (tls_pbuf): Fix to accommodate new place of pathbufs. (tls_pathbuf::destroy): Change type of loop variables to uint32_t. * tls_pbuf.h (class tmp_pathbuf): Change type of buffer counters to uint32_t. Accommodate new place of pathbufs. * tlsoffsets.h: Regenerate. * tlsoffsets64.h: Regenerate.
2014-08-22 17:21:33 +08:00
{
small_printf ("%012X %012X", thestack.sf.AddrFrame.Offset,
* Throughout, use __try/__except/__endtry blocks, rather than myfault handler. * cygtls.cc (_cygtls::remove): Accommodate the fact that pathbufs has been moved from _local_storage to _cygtls. * cygtls.h (class tls_pathbuf): Add comment to hint to gendef usage of counters. Change type of counters to uint32_t for clarity. Remove _cygtls as friend class. (struct _local_storage): Move pathbufs from here... (struct _cygtls): ...to here, allowing to access it from _sigbe. (class san): Only define on 32 bit. Remove errno, _c_cnt and _w_cnt members. (san::setup): Drop parameter. Don't initialize removed members. (san::leave): Don't set removed members. (class myfault): Only define on 32 bit. (myfault::faulted): Only keep implementation not taking any parameter. Drop argument in call to sebastian.setup. (__try/__leave/__except/__endtry): Implement to support real SEH. For now stick to SJLJ on 32 bit. * dcrt0.cc (dll_crt0_0): Drop 64 bit call to exception::install_myfault_handler. * exception.h (exception_handler): Define with EXCEPTION_DISPOSITION as return type. (PDISPATCHER_CONTEXT): Define as void * on 32 bit. Define as pointer to _DISPATCHER_CONTEXT on 64 bit. (class exception): Define separately for 32 and 64 bit. (exception::myfault): Add handler for myfault SEH handling on 64 bit. (exception::exception): Fix mangled method name to account for change in type of last parameter. (exception::install_myfault_handler): Remove. * exceptions.cc (exception::myfault_handle): Remove. (exception::myfault): New SEH handler for 64 bit. * gendef (_sigbe): Set tls_pathbuf counters to 0 explicitely when returning to the caller. * ntdll.h: Move a comment to a better place. (struct _SCOPE_TABLE): Define on 64 bit. * thread.cc (verifyable_object_isvalid): Remove gcc 4.7 workaround. * tls_pbuf.cc (tls_pbuf): Fix to accommodate new place of pathbufs. (tls_pathbuf::destroy): Change type of loop variables to uint32_t. * tls_pbuf.h (class tmp_pathbuf): Change type of buffer counters to uint32_t. Accommodate new place of pathbufs. * tlsoffsets.h: Regenerate. * tlsoffsets64.h: Regenerate.
2014-08-22 17:21:33 +08:00
thestack.sf.AddrPC.Offset);
for (unsigned j = 0; j < NPARAMS; j++)
small_printf ("%s%012X", j == 0 ? " (" : ", ",
* Throughout, use __try/__except/__endtry blocks, rather than myfault handler. * cygtls.cc (_cygtls::remove): Accommodate the fact that pathbufs has been moved from _local_storage to _cygtls. * cygtls.h (class tls_pathbuf): Add comment to hint to gendef usage of counters. Change type of counters to uint32_t for clarity. Remove _cygtls as friend class. (struct _local_storage): Move pathbufs from here... (struct _cygtls): ...to here, allowing to access it from _sigbe. (class san): Only define on 32 bit. Remove errno, _c_cnt and _w_cnt members. (san::setup): Drop parameter. Don't initialize removed members. (san::leave): Don't set removed members. (class myfault): Only define on 32 bit. (myfault::faulted): Only keep implementation not taking any parameter. Drop argument in call to sebastian.setup. (__try/__leave/__except/__endtry): Implement to support real SEH. For now stick to SJLJ on 32 bit. * dcrt0.cc (dll_crt0_0): Drop 64 bit call to exception::install_myfault_handler. * exception.h (exception_handler): Define with EXCEPTION_DISPOSITION as return type. (PDISPATCHER_CONTEXT): Define as void * on 32 bit. Define as pointer to _DISPATCHER_CONTEXT on 64 bit. (class exception): Define separately for 32 and 64 bit. (exception::myfault): Add handler for myfault SEH handling on 64 bit. (exception::exception): Fix mangled method name to account for change in type of last parameter. (exception::install_myfault_handler): Remove. * exceptions.cc (exception::myfault_handle): Remove. (exception::myfault): New SEH handler for 64 bit. * gendef (_sigbe): Set tls_pathbuf counters to 0 explicitely when returning to the caller. * ntdll.h: Move a comment to a better place. (struct _SCOPE_TABLE): Define on 64 bit. * thread.cc (verifyable_object_isvalid): Remove gcc 4.7 workaround. * tls_pbuf.cc (tls_pbuf): Fix to accommodate new place of pathbufs. (tls_pathbuf::destroy): Change type of loop variables to uint32_t. * tls_pbuf.h (class tmp_pathbuf): Change type of buffer counters to uint32_t. Accommodate new place of pathbufs. * tlsoffsets.h: Regenerate. * tlsoffsets64.h: Regenerate.
2014-08-22 17:21:33 +08:00
thestack.sf.Params[j]);
small_printf (") %s\r\n", prettyprint_va((PVOID)thestack.sf.AddrPC.Offset));
* Throughout, use __try/__except/__endtry blocks, rather than myfault handler. * cygtls.cc (_cygtls::remove): Accommodate the fact that pathbufs has been moved from _local_storage to _cygtls. * cygtls.h (class tls_pathbuf): Add comment to hint to gendef usage of counters. Change type of counters to uint32_t for clarity. Remove _cygtls as friend class. (struct _local_storage): Move pathbufs from here... (struct _cygtls): ...to here, allowing to access it from _sigbe. (class san): Only define on 32 bit. Remove errno, _c_cnt and _w_cnt members. (san::setup): Drop parameter. Don't initialize removed members. (san::leave): Don't set removed members. (class myfault): Only define on 32 bit. (myfault::faulted): Only keep implementation not taking any parameter. Drop argument in call to sebastian.setup. (__try/__leave/__except/__endtry): Implement to support real SEH. For now stick to SJLJ on 32 bit. * dcrt0.cc (dll_crt0_0): Drop 64 bit call to exception::install_myfault_handler. * exception.h (exception_handler): Define with EXCEPTION_DISPOSITION as return type. (PDISPATCHER_CONTEXT): Define as void * on 32 bit. Define as pointer to _DISPATCHER_CONTEXT on 64 bit. (class exception): Define separately for 32 and 64 bit. (exception::myfault): Add handler for myfault SEH handling on 64 bit. (exception::exception): Fix mangled method name to account for change in type of last parameter. (exception::install_myfault_handler): Remove. * exceptions.cc (exception::myfault_handle): Remove. (exception::myfault): New SEH handler for 64 bit. * gendef (_sigbe): Set tls_pathbuf counters to 0 explicitely when returning to the caller. * ntdll.h: Move a comment to a better place. (struct _SCOPE_TABLE): Define on 64 bit. * thread.cc (verifyable_object_isvalid): Remove gcc 4.7 workaround. * tls_pbuf.cc (tls_pbuf): Fix to accommodate new place of pathbufs. (tls_pathbuf::destroy): Change type of loop variables to uint32_t. * tls_pbuf.h (class tmp_pathbuf): Change type of buffer counters to uint32_t. Accommodate new place of pathbufs. * tlsoffsets.h: Regenerate. * tlsoffsets64.h: Regenerate.
2014-08-22 17:21:33 +08:00
}
small_printf ("End of stack trace%s\r\n",
i == DUMPSTACK_FRAME_LIMIT ?
" (more stack frames may be present)" : "");
small_printf ("Loaded modules:\r\n");
PLIST_ENTRY head = &NtCurrentTeb()->Peb->Ldr->InMemoryOrderModuleList;
for (PLIST_ENTRY x = head->Flink; x != head; x = x->Flink)
{
PLDR_DATA_TABLE_ENTRY mod = CONTAINING_RECORD (x, LDR_DATA_TABLE_ENTRY,
InMemoryOrderLinks);
small_printf ("%012X %S\r\n", mod->DllBase, &mod->BaseDllName);
}
* Throughout, use __try/__except/__endtry blocks, rather than myfault handler. * cygtls.cc (_cygtls::remove): Accommodate the fact that pathbufs has been moved from _local_storage to _cygtls. * cygtls.h (class tls_pathbuf): Add comment to hint to gendef usage of counters. Change type of counters to uint32_t for clarity. Remove _cygtls as friend class. (struct _local_storage): Move pathbufs from here... (struct _cygtls): ...to here, allowing to access it from _sigbe. (class san): Only define on 32 bit. Remove errno, _c_cnt and _w_cnt members. (san::setup): Drop parameter. Don't initialize removed members. (san::leave): Don't set removed members. (class myfault): Only define on 32 bit. (myfault::faulted): Only keep implementation not taking any parameter. Drop argument in call to sebastian.setup. (__try/__leave/__except/__endtry): Implement to support real SEH. For now stick to SJLJ on 32 bit. * dcrt0.cc (dll_crt0_0): Drop 64 bit call to exception::install_myfault_handler. * exception.h (exception_handler): Define with EXCEPTION_DISPOSITION as return type. (PDISPATCHER_CONTEXT): Define as void * on 32 bit. Define as pointer to _DISPATCHER_CONTEXT on 64 bit. (class exception): Define separately for 32 and 64 bit. (exception::myfault): Add handler for myfault SEH handling on 64 bit. (exception::exception): Fix mangled method name to account for change in type of last parameter. (exception::install_myfault_handler): Remove. * exceptions.cc (exception::myfault_handle): Remove. (exception::myfault): New SEH handler for 64 bit. * gendef (_sigbe): Set tls_pathbuf counters to 0 explicitely when returning to the caller. * ntdll.h: Move a comment to a better place. (struct _SCOPE_TABLE): Define on 64 bit. * thread.cc (verifyable_object_isvalid): Remove gcc 4.7 workaround. * tls_pbuf.cc (tls_pbuf): Fix to accommodate new place of pathbufs. (tls_pathbuf::destroy): Change type of loop variables to uint32_t. * tls_pbuf.h (class tmp_pathbuf): Change type of buffer counters to uint32_t. Accommodate new place of pathbufs. * tlsoffsets.h: Regenerate. * tlsoffsets64.h: Regenerate.
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if (h)
NtClose (h);
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}
* Throughout, use __try/__except/__endtry blocks, rather than myfault handler. * cygtls.cc (_cygtls::remove): Accommodate the fact that pathbufs has been moved from _local_storage to _cygtls. * cygtls.h (class tls_pathbuf): Add comment to hint to gendef usage of counters. Change type of counters to uint32_t for clarity. Remove _cygtls as friend class. (struct _local_storage): Move pathbufs from here... (struct _cygtls): ...to here, allowing to access it from _sigbe. (class san): Only define on 32 bit. Remove errno, _c_cnt and _w_cnt members. (san::setup): Drop parameter. Don't initialize removed members. (san::leave): Don't set removed members. (class myfault): Only define on 32 bit. (myfault::faulted): Only keep implementation not taking any parameter. Drop argument in call to sebastian.setup. (__try/__leave/__except/__endtry): Implement to support real SEH. For now stick to SJLJ on 32 bit. * dcrt0.cc (dll_crt0_0): Drop 64 bit call to exception::install_myfault_handler. * exception.h (exception_handler): Define with EXCEPTION_DISPOSITION as return type. (PDISPATCHER_CONTEXT): Define as void * on 32 bit. Define as pointer to _DISPATCHER_CONTEXT on 64 bit. (class exception): Define separately for 32 and 64 bit. (exception::myfault): Add handler for myfault SEH handling on 64 bit. (exception::exception): Fix mangled method name to account for change in type of last parameter. (exception::install_myfault_handler): Remove. * exceptions.cc (exception::myfault_handle): Remove. (exception::myfault): New SEH handler for 64 bit. * gendef (_sigbe): Set tls_pathbuf counters to 0 explicitely when returning to the caller. * ntdll.h: Move a comment to a better place. (struct _SCOPE_TABLE): Define on 64 bit. * thread.cc (verifyable_object_isvalid): Remove gcc 4.7 workaround. * tls_pbuf.cc (tls_pbuf): Fix to accommodate new place of pathbufs. (tls_pathbuf::destroy): Change type of loop variables to uint32_t. * tls_pbuf.h (class tmp_pathbuf): Change type of buffer counters to uint32_t. Accommodate new place of pathbufs. * tlsoffsets.h: Regenerate. * tlsoffsets64.h: Regenerate.
2014-08-22 17:21:33 +08:00
__except (NO_ERROR) {}
__endtry
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}
bool
_cygtls::inside_kernel (CONTEXT *cx)
{
int res;
MEMORY_BASIC_INFORMATION m;
if (!isinitialized ())
return true;
memset (&m, 0, sizeof m);
if (!VirtualQuery ((LPCVOID) cx->_CX_instPtr, &m, sizeof m))
sigproc_printf ("couldn't get memory info, pc %p, %E", cx->_CX_instPtr);
size_t size = (windows_system_directory_length + 6) * sizeof (WCHAR);
PWCHAR checkdir = (PWCHAR) alloca (size);
memset (checkdir, 0, size);
# define h ((HMODULE) m.AllocationBase)
if (!h || m.State != MEM_COMMIT) /* Be defensive */
res = true;
else if (h == hntdll)
res = true; /* Calling GetModuleFilename on ntdll.dll
can hang */
else if (h == user_data->hmodule)
res = false;
else if (!GetModuleFileNameW (h, checkdir,
windows_system_directory_length + 6))
res = false;
else
{
/* Skip potential long path prefix. */
if (!wcsncmp (checkdir, L"\\\\?\\", 4))
checkdir += 4;
res = wcsncasecmp (windows_system_directory, checkdir,
windows_system_directory_length) == 0;
}
sigproc_printf ("pc %p, h %p, inside_kernel %d", cx->_CX_instPtr, h, res);
# undef h
return res;
}
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/* Temporary (?) function for external callers to get a stack dump */
extern "C" void
cygwin_stackdump ()
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{
CONTEXT c;
c.ContextFlags = CONTEXT_FULL;
2013-04-23 17:44:36 +08:00
RtlCaptureContext (&c);
cygwin_exception exc ((PUINT_PTR) c._CX_framePtr, &c);
* cygtls.h (_cygtls::signal_exit): Delete from class. * exception.h (cygwin_exception): New class. (cygwin_exception::dumpstack): Declare new function. (cygwin_exception::context): Ditto. (cygwin_exception::dump_exception): Ditto. * exceptions.cc (cygwin_exception::dump_exception): Move into cygwin_exception class. Accommodate new variable names. (cygwin_exception::dumpstack): Ditto stackdump -> dumpstack. (exception::handle): Move andreas processing earlier. Defer signal processing decisions to the signal thread where they belong. Pass exception information to sig_send via new siginfo_t si_cyg field. (ctrl_c_handler): Wait for SIGHUP signal to be processed since it could cause a process exit and we don't want races with thread exit lock. (signal_exit): Move back here from sigproc.cc. Modify arguments and remove from sigpacket class. Decide when to dump core based on signal type. (sigpacket::process): Handle exiting signals in context of threads rather than in the signal thread. Signal debugger on non-Windows signals. Remove setup_signal_exit call. * sigproc.cc (no_signals_available): Remove argument. (signal_exit_code): Delete. (close_my_readsig): Ditto. (_cygtls::signal_exit): Move to exceptions.cc. (sigproc_terminate): Don't attempt to terminate signal thread. (setup_signal_exit): Delete. (exit_thread): Use new si_cyg entry in siginfo_t. (sig_send): Just use empty initializer for si. Accommodate change in no_signals_available argument. (wait_sig): Remove attempt to "go asynchronous" on process exit. Delete __SIGEXIT handling. Don't ever exit. * sigproc.h: Remove __SIGEXIT from signal enum. Renumber. * include/cygwin/signal.h (siginfo_t): Add si_cyg entry.
2013-01-03 02:34:06 +08:00
exc.dumpstack ();
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}
static
int exec_prepared_command (PWCHAR command)
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{
if (!command)
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return 0;
debug_printf ("executing prepared command '%W'", command);
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PWCHAR dbg_end = wcschr (command, L'\0');
Reduce stack pressure throughout Cygwin * dcrt0.cc (initial_env): Reduce size of local path buffers to PATH_MAX. Allocate debugger_command from process heap. (init_windows_system_directory): Very early initialize new global variable global_progname. * dll_init.cc (dll_list::alloc): Make path buffer static. Explain why. (dll_list::populate_deps): Use tmp_pathbuf for local path buffer. * exceptions.cc (debugger_command): Convert to PWCHAR. (error_start_init): Allocate debugger_command and fill with wide char strings. Only allocate if NULL. (try_to_debug): Just check if debugger_command is a NULL pointer to return. Drop conversion from char to WCHAR and drop local variable dbg_cmd. * globals.cc (global_progname): New global variable to store Windows application path. * pinfo.cc (pinfo_basic::pinfo_basic): Just copy progname over from global_progname. (pinfo::status_exit): Let path_conv create the POSIX path to avoid local buffer. * pseudo_reloc.cc (__report_error): Utilize global_progname, drop local buffer. * smallprint.cc (__small_vsprintf): Just utilize global_progname for %P format specifier. (__small_vswprintf): Ditto. * strace.cc (PROTECT): Change to reflect x being a pointer. Reformat. (CHECK): Ditto. Reformat. (strace::activate): Utilize global_progname, drop local buffer. Fix formatting. (strace::vsprntf): Reduce size of local progname buffer to NAME_MAX. Copy and, if necessary, convert only the last path component to progname. (strace_buf_guard): New muto. (buf): New static pointer. (strace::vprntf): Use buf under strace_buf_guard lock only. Allocate buffer space for buf on Windows heap. * wow64.cc (wow64_respawn_process): Utilize global_progname, drop local path buffer. Signed-off-by: Corinna Vinschen <corinna@vinschen.de>
2015-07-20 04:38:30 +08:00
__small_swprintf (dbg_end, L" %u", GetCurrentProcessId ());
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LONG prio = GetThreadPriority (GetCurrentThread ());
SetThreadPriority (GetCurrentThread (), THREAD_PRIORITY_HIGHEST);
PROCESS_INFORMATION pi = {NULL, 0, 0, 0};
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STARTUPINFOW si = {0, NULL, NULL, NULL, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0,
NULL, NULL, NULL, NULL};
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si.lpReserved = NULL;
si.lpDesktop = NULL;
si.dwFlags = 0;
si.cb = sizeof (si);
/* FIXME: need to know handles of all running threads to
suspend_all_threads_except (current_thread_id);
*/
/* If the tty mutex is owned, we will fail to start any cygwin app
until the trapped app exits. However, this will only release any
the mutex if it is owned by this thread so that may be problematic. */
2000-02-18 03:38:33 +08:00
* dcrt0.cc (dll_crt0_0): Call tty_list::init_session here. (dll_crt0_1): Reflect renaming from tty_init to tty::init_session. (do_exit): Reflect moving of tty_terminate into tty_list. * exceptions.cc (events_init): Move tty_mutex stuff elsewhere. * fhandler_console.cc (set_console_title): Use lock_ttys class. * fhandler_termios.cc (fhandler_termios::bg_check): Make debug output more accurate. * fhandler_tty.cc (fhandler_tty_slave::open): Reflect move of attach_tty into tty_list class. Don't attempt to grab master end of pty if master doesn't exist. (fhandler_pty_master::open): Reflect move of allocate_tty into tty_list class. Use lock_ttys::release to release mutex. Improve debugging output. (fhandler_pty_master::setup): Remove if 0'ed block. Fix argument to SetNamedPipeHandleState. * pinfo.cc (_pinfo::set_ctty): Lock ttys before setting sid/pgid. Improve debugging. Add temporary debugging. * tty.cc (tty_list::init_session): New function. (tty::init_session): Rename from tty_init. Reflect move of attach_tty to tty_list class. (tty::create_master): Rename from create_tty_master. (tty_list::attach): Rename from attach_tty. Reflect renaming of connect_tty to connect. Ditto for allocate_tty. (tty_terminate): Delete. (tty_list::terminate): Subsume tty_terminate. Use lock_ttys rather than manipulating mutex directly. (tty_list::allocate): Rename from allocate_tty. Use lock_ttys rather than manipulating mutex directly. Don't set sid here since linux apparently doesn't do this. Reflect move of create_tty_master into tty. (lock_ttys::lock_ttys): Define new constructor. (lock_ttys::release): New function. * tty.h (tty::exists): Return false immediately if !master_pid. (tty::set_master_closed): Define new function. (tty::create_master): Ditto. (tty::init_session): Ditto. (tty_list::mutex): New field. (tty_list::allocate): Define new function. (tty_list::connect): Ditto. (tty_list::attach): Ditto. (tty_list::init_session): Ditto. (lock_ttys): New class. (tty_init): Delete declaration. (tty_terminate): Ditto. (attach_tty): Ditto. (create_tty_master): Ditto.
2006-06-04 04:32:07 +08:00
lock_ttys::release ();
2000-02-18 03:38:33 +08:00
/* prevent recursive exception handling */
PWCHAR rawenv = GetEnvironmentStringsW () ;
for (PWCHAR p = rawenv; *p != L'\0'; p = wcschr (p, L'\0') + 1)
{
if (wcsncmp (p, L"CYGWIN=", wcslen (L"CYGWIN=")) == 0)
{
PWCHAR q = wcsstr (p, L"error_start") ;
/* replace 'error_start=...' with '_rror_start=...' */
if (q)
{
*q = L'_' ;
SetEnvironmentVariableW (L"CYGWIN", p + wcslen (L"CYGWIN=")) ;
}
break;
}
}
FreeEnvironmentStringsW (rawenv);
/* timeout from waiting for debugger to attach after 10 seconds */
ULONGLONG timeout = GetTickCount64() + 10*1000;
console_printf ("*** starting '%W' for pid %u, tid %u\r\n",
command,
cygwin_pid (GetCurrentProcessId ()), GetCurrentThreadId ());
BOOL dbg;
* dcrt0.cc: Include string.h. (initial_env): Use small_printf's %P specifier. * dll_init.cc (dll_list::alloc): Use PATH_MAX instead of CYG_MAX_PATH for path name buffer size. * dll_init.h (struct dll): Ditto. * environ.cc: Include string.h. (win_env::add_cache): Use temporary local buffer for path conversion. (posify): Ditto. * exceptions.cc (try_to_debug): Use CreateProcessW to allow long path names. * miscfuncs.cc: Drop unused implementations of strcasematch and strncasematch. (ch_case_eq): Drop. (strcasestr): Drop. (cygwin_wcscasecmp): New function. (cygwin_wcsncasecmp): New function. (cygwin_strcasecmp): New function. (cygwin_strncasecmp): New function. (cygwin_wcslwr): New function. (cygwin_wcsupr): New function. (cygwin_strlwr): New function. (cygwin_strupr): New function. * ntdll.h (RtlDowncaseUnicodeString): Declare. (RtlUpcaseUnicodeString): Declare. (RtlInt64ToHexUnicodeString): Fix typo in comment. * string.h: Disable not NLS aware implementations of strcasematch and strncasematch. (cygwin_strcasecmp): Declare. (strcasecmp): Define as cygwin_strcasecmp. (cygwin_strncasecmp): Declare. (strncasecmp): Define as cygwin_strncasecmp. (strcasematch):Define using cygwin_strcasecmp. (strncasematch):Define using cygwin_strncasecmp. (cygwin_strlwr): Declare. (strlwr): Define as cygwin_strlwr. (cygwin_strupr): Declare. (strupr): Define as cygwin_strupr. * wchar.h: New file. * wincap.cc (wincapc::init): Use "NT" as fix OS string. * winsup.h (strcasematch): Drop declaration. (strncasematch): Ditto. (strcasestr): Ditto.
2007-12-12 20:12:24 +08:00
dbg = CreateProcessW (NULL,
command,
* dcrt0.cc: Include string.h. (initial_env): Use small_printf's %P specifier. * dll_init.cc (dll_list::alloc): Use PATH_MAX instead of CYG_MAX_PATH for path name buffer size. * dll_init.h (struct dll): Ditto. * environ.cc: Include string.h. (win_env::add_cache): Use temporary local buffer for path conversion. (posify): Ditto. * exceptions.cc (try_to_debug): Use CreateProcessW to allow long path names. * miscfuncs.cc: Drop unused implementations of strcasematch and strncasematch. (ch_case_eq): Drop. (strcasestr): Drop. (cygwin_wcscasecmp): New function. (cygwin_wcsncasecmp): New function. (cygwin_strcasecmp): New function. (cygwin_strncasecmp): New function. (cygwin_wcslwr): New function. (cygwin_wcsupr): New function. (cygwin_strlwr): New function. (cygwin_strupr): New function. * ntdll.h (RtlDowncaseUnicodeString): Declare. (RtlUpcaseUnicodeString): Declare. (RtlInt64ToHexUnicodeString): Fix typo in comment. * string.h: Disable not NLS aware implementations of strcasematch and strncasematch. (cygwin_strcasecmp): Declare. (strcasecmp): Define as cygwin_strcasecmp. (cygwin_strncasecmp): Declare. (strncasecmp): Define as cygwin_strncasecmp. (strcasematch):Define using cygwin_strcasecmp. (strncasematch):Define using cygwin_strncasecmp. (cygwin_strlwr): Declare. (strlwr): Define as cygwin_strlwr. (cygwin_strupr): Declare. (strupr): Define as cygwin_strupr. * wchar.h: New file. * wincap.cc (wincapc::init): Use "NT" as fix OS string. * winsup.h (strcasematch): Drop declaration. (strncasematch): Ditto. (strcasestr): Ditto.
2007-12-12 20:12:24 +08:00
NULL,
NULL,
FALSE,
CREATE_NEW_CONSOLE | CREATE_NEW_PROCESS_GROUP,
NULL,
NULL,
&si,
&pi);
/* We want to stop here and wait until the error_start process attaches. But
we can't wait here for the error_start process to exit, as if it's a
debugger, it might want to continue this thread. So we busy wait until a
debugger attaches, which stops this process, after which it can decide if
we continue or not.
Note that this is still racy: if the error_start process does it's work too
fast, we don't notice that it attached and get stuck here. So we also
apply a timeout to ensure we exit eventually.
*/
Reduce stack pressure throughout Cygwin * dcrt0.cc (initial_env): Reduce size of local path buffers to PATH_MAX. Allocate debugger_command from process heap. (init_windows_system_directory): Very early initialize new global variable global_progname. * dll_init.cc (dll_list::alloc): Make path buffer static. Explain why. (dll_list::populate_deps): Use tmp_pathbuf for local path buffer. * exceptions.cc (debugger_command): Convert to PWCHAR. (error_start_init): Allocate debugger_command and fill with wide char strings. Only allocate if NULL. (try_to_debug): Just check if debugger_command is a NULL pointer to return. Drop conversion from char to WCHAR and drop local variable dbg_cmd. * globals.cc (global_progname): New global variable to store Windows application path. * pinfo.cc (pinfo_basic::pinfo_basic): Just copy progname over from global_progname. (pinfo::status_exit): Let path_conv create the POSIX path to avoid local buffer. * pseudo_reloc.cc (__report_error): Utilize global_progname, drop local buffer. * smallprint.cc (__small_vsprintf): Just utilize global_progname for %P format specifier. (__small_vswprintf): Ditto. * strace.cc (PROTECT): Change to reflect x being a pointer. Reformat. (CHECK): Ditto. Reformat. (strace::activate): Utilize global_progname, drop local buffer. Fix formatting. (strace::vsprntf): Reduce size of local progname buffer to NAME_MAX. Copy and, if necessary, convert only the last path component to progname. (strace_buf_guard): New muto. (buf): New static pointer. (strace::vprntf): Use buf under strace_buf_guard lock only. Allocate buffer space for buf on Windows heap. * wow64.cc (wow64_respawn_process): Utilize global_progname, drop local path buffer. Signed-off-by: Corinna Vinschen <corinna@vinschen.de>
2015-07-20 04:38:30 +08:00
*dbg_end = L'\0';
if (!dbg)
system_printf ("Failed to start, %E");
else
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{
while (!being_debugged () && GetTickCount64() < timeout)
Sleep (0);
Sleep (2000);
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}
console_printf ("*** continuing pid %u\r\n",
cygwin_pid (GetCurrentProcessId ()));
Eliminate use of sigframe and sigthread throughout. * Makefile.in (DLL_OFILES): Add sigfe.o. Remove reliance on cygwin.def from cygwin0.dll dependency since dependence on sigfe.o implies that. Generate def file on the fly using 'gendef'. * configure.in: Don't auto-generate cygwin.def. * configure: Regenerate. * cygwin.din: Add SIGFE stuff where appropriate. * dcrt0.cc (dll_crt0_1): Initialize cygwin tls early in process startup. Set _main_tls to address of the main thread's cygwin tls. * debug.h: Remove now unneeded WFSO and WFMO declarations. * exceptions.cc (_last_thread): Define. (set_thread_state_for_signals): New function. (reset_thread_exception_for_signals): Ditto. (init_thread_for_signals): Ditto. (delete_thread_for_signals): Ditto. (capture_thread_for_signals): Ditto. (handle_exceptions): Set return address explicitly for exceptions prior to calling sig_send. (interrupt_on_return): Eliminate. (setup_handler): Add preliminary implementation for dealing with thread-specific signals by querying _main_tls. (signal_exit): Use cygthread::main_thread_id instead of mainthread.id. (call_signal_handler_now): For now, just handle the main thread. * fork.cc (vfork): Save and restore main _my_tls. * gendef: New file. Generates def file and sigfe.s file. * gentls_offsets: New file. Generates offsets for perl to use in sigfe.s. * how-signals-work.txt: Mention that info is obsolete. * init.cc (dll_entry): Initialize cygwin tls storage here. * miscfuncs.cc (low_priority_sleep): Make a C function for easier calling from asm. * perthread.h (vfork_save::tls): New element. * signal.cc (nanosleep): Replace previous use of sigframe.call_signal_handler_now with straight call to call_signal_handler_now. (abort): Ditto. * syscalls.cc (readv): Ditto. * termios.cc (tcsetattr): Ditto. * wait.cc (wait4): Ditto. * sigproc.cc (sig_dispatch_pending): Ditto. (sig_send): Ditto. * sigproc.h: Declare call_signal_handler_now. * thread.cc (pthread::thread_init_wrapper): Initialize cygwin tls. Remove obsolete and unworking signal stuff. * thread.h (verifyable_object::sigs): Eliminate. (verifyable_object::sigmask): Eliminate. (verifyable_object::sigtodo): Eliminate. (verifyable_object::exit): Make attribute noreturn. (verifyable_object::thread_init_wrapper): Ditto. (pthread_null::exit): Ditto. * winbase.h (__stackbase): Always define. * winsup.h (low_priority_sleep): Declare as a "C" function. * include/cygwin/version.h: Bump API version to reflect sigwait export. * include/sys/queue.h: Protect SLIST_ENTRY from previous declaration. * signal.cc (sigwait): Implement. * select.cc (fhandler_base::ready_for_read): Add debugging output. * devices.h: Define more device pointers via their storage. * devices.in: Don't parse things like /dev/inet/tcp, as they really have no meaning. * devices.cc: Regenerate. * gendevices: Set proper protection for output file. * cygtls.h: New file. * gendef: New file. * gentls_offsets: New file. * tlsoffsets.h: New file. Autogenerated. * config/i386/longjmp.c: Remove. File subsumed by gendef output. * config/i386/makefrag: Remove obsolete file. * fhandler.cc: Remove spurious access_worker declaration. * spawn.cc (spawnve): Make debugging output more accurate. * cygwin-gperf: Remove. * devices.cc: Remove.
2003-11-29 04:55:59 +08:00
SetThreadPriority (GetCurrentThread (), prio);
return dbg;
2000-02-18 03:38:33 +08:00
}
extern "C" int
try_to_debug ()
{
/* If already being debugged, break into the debugger (Note that this function
can be called from places other than an exception) */
if (being_debugged ())
{
extern void break_here ();
break_here ();
return 1;
}
/* Otherwise, invoke the JIT debugger, if set */
return exec_prepared_command (debugger_command);
}
* Throughout, use __try/__except/__endtry blocks, rather than myfault handler. * cygtls.cc (_cygtls::remove): Accommodate the fact that pathbufs has been moved from _local_storage to _cygtls. * cygtls.h (class tls_pathbuf): Add comment to hint to gendef usage of counters. Change type of counters to uint32_t for clarity. Remove _cygtls as friend class. (struct _local_storage): Move pathbufs from here... (struct _cygtls): ...to here, allowing to access it from _sigbe. (class san): Only define on 32 bit. Remove errno, _c_cnt and _w_cnt members. (san::setup): Drop parameter. Don't initialize removed members. (san::leave): Don't set removed members. (class myfault): Only define on 32 bit. (myfault::faulted): Only keep implementation not taking any parameter. Drop argument in call to sebastian.setup. (__try/__leave/__except/__endtry): Implement to support real SEH. For now stick to SJLJ on 32 bit. * dcrt0.cc (dll_crt0_0): Drop 64 bit call to exception::install_myfault_handler. * exception.h (exception_handler): Define with EXCEPTION_DISPOSITION as return type. (PDISPATCHER_CONTEXT): Define as void * on 32 bit. Define as pointer to _DISPATCHER_CONTEXT on 64 bit. (class exception): Define separately for 32 and 64 bit. (exception::myfault): Add handler for myfault SEH handling on 64 bit. (exception::exception): Fix mangled method name to account for change in type of last parameter. (exception::install_myfault_handler): Remove. * exceptions.cc (exception::myfault_handle): Remove. (exception::myfault): New SEH handler for 64 bit. * gendef (_sigbe): Set tls_pathbuf counters to 0 explicitely when returning to the caller. * ntdll.h: Move a comment to a better place. (struct _SCOPE_TABLE): Define on 64 bit. * thread.cc (verifyable_object_isvalid): Remove gcc 4.7 workaround. * tls_pbuf.cc (tls_pbuf): Fix to accommodate new place of pathbufs. (tls_pathbuf::destroy): Change type of loop variables to uint32_t. * tls_pbuf.h (class tmp_pathbuf): Change type of buffer counters to uint32_t. Accommodate new place of pathbufs. * tlsoffsets.h: Regenerate. * tlsoffsets64.h: Regenerate.
2014-08-22 17:21:33 +08:00
/* myfault exception handler. */
EXCEPTION_DISPOSITION
exception::myfault (EXCEPTION_RECORD *e, exception_list *frame, CONTEXT *in,
PDISPATCHER_CONTEXT dispatch)
{
* Throughout, use __try/__except/__endtry blocks, rather than myfault handler. * cygtls.cc (_cygtls::remove): Accommodate the fact that pathbufs has been moved from _local_storage to _cygtls. * cygtls.h (class tls_pathbuf): Add comment to hint to gendef usage of counters. Change type of counters to uint32_t for clarity. Remove _cygtls as friend class. (struct _local_storage): Move pathbufs from here... (struct _cygtls): ...to here, allowing to access it from _sigbe. (class san): Only define on 32 bit. Remove errno, _c_cnt and _w_cnt members. (san::setup): Drop parameter. Don't initialize removed members. (san::leave): Don't set removed members. (class myfault): Only define on 32 bit. (myfault::faulted): Only keep implementation not taking any parameter. Drop argument in call to sebastian.setup. (__try/__leave/__except/__endtry): Implement to support real SEH. For now stick to SJLJ on 32 bit. * dcrt0.cc (dll_crt0_0): Drop 64 bit call to exception::install_myfault_handler. * exception.h (exception_handler): Define with EXCEPTION_DISPOSITION as return type. (PDISPATCHER_CONTEXT): Define as void * on 32 bit. Define as pointer to _DISPATCHER_CONTEXT on 64 bit. (class exception): Define separately for 32 and 64 bit. (exception::myfault): Add handler for myfault SEH handling on 64 bit. (exception::exception): Fix mangled method name to account for change in type of last parameter. (exception::install_myfault_handler): Remove. * exceptions.cc (exception::myfault_handle): Remove. (exception::myfault): New SEH handler for 64 bit. * gendef (_sigbe): Set tls_pathbuf counters to 0 explicitely when returning to the caller. * ntdll.h: Move a comment to a better place. (struct _SCOPE_TABLE): Define on 64 bit. * thread.cc (verifyable_object_isvalid): Remove gcc 4.7 workaround. * tls_pbuf.cc (tls_pbuf): Fix to accommodate new place of pathbufs. (tls_pathbuf::destroy): Change type of loop variables to uint32_t. * tls_pbuf.h (class tmp_pathbuf): Change type of buffer counters to uint32_t. Accommodate new place of pathbufs. * tlsoffsets.h: Regenerate. * tlsoffsets64.h: Regenerate.
2014-08-22 17:21:33 +08:00
PSCOPE_TABLE table = (PSCOPE_TABLE) dispatch->HandlerData;
RtlUnwindEx (frame,
(char *) dispatch->ImageBase + table->ScopeRecord[0].JumpTarget,
e, 0, in, dispatch->HistoryTable);
/* NOTREACHED, make gcc happy. */
return ExceptionContinueSearch;
}
/* If another exception occurs while running a signal handler on an alternate
signal stack, the normal SEH handlers are skipped, because the OS exception
handling considers the current (alternate) stack "broken". However, it
still calls vectored exception handlers.
TODO: What we do here is to handle only __try/__except blocks in Cygwin.
"Normal" exceptions will simply exit the process. Still, better
than nothing... */
LONG
myfault_altstack_handler (EXCEPTION_POINTERS *exc)
{
_cygtls& me = _my_tls;
if (me.andreas)
{
CONTEXT *c = exc->ContextRecord;
/* Unwind the stack manually and call RtlRestoreContext. This
is necessary because RtlUnwindEx checks the stack for validity,
which, as outlined above, fails for the alternate stack. */
while (c->_CX_stackPtr < me.andreas->frame)
__unwind_single_frame (c);
c->_CX_instPtr = me.andreas->ret;
RtlRestoreContext (c, NULL);
}
return EXCEPTION_CONTINUE_SEARCH;
}
/* Main exception handler. */
* Throughout, use __try/__except/__endtry blocks, rather than myfault handler. * cygtls.cc (_cygtls::remove): Accommodate the fact that pathbufs has been moved from _local_storage to _cygtls. * cygtls.h (class tls_pathbuf): Add comment to hint to gendef usage of counters. Change type of counters to uint32_t for clarity. Remove _cygtls as friend class. (struct _local_storage): Move pathbufs from here... (struct _cygtls): ...to here, allowing to access it from _sigbe. (class san): Only define on 32 bit. Remove errno, _c_cnt and _w_cnt members. (san::setup): Drop parameter. Don't initialize removed members. (san::leave): Don't set removed members. (class myfault): Only define on 32 bit. (myfault::faulted): Only keep implementation not taking any parameter. Drop argument in call to sebastian.setup. (__try/__leave/__except/__endtry): Implement to support real SEH. For now stick to SJLJ on 32 bit. * dcrt0.cc (dll_crt0_0): Drop 64 bit call to exception::install_myfault_handler. * exception.h (exception_handler): Define with EXCEPTION_DISPOSITION as return type. (PDISPATCHER_CONTEXT): Define as void * on 32 bit. Define as pointer to _DISPATCHER_CONTEXT on 64 bit. (class exception): Define separately for 32 and 64 bit. (exception::myfault): Add handler for myfault SEH handling on 64 bit. (exception::exception): Fix mangled method name to account for change in type of last parameter. (exception::install_myfault_handler): Remove. * exceptions.cc (exception::myfault_handle): Remove. (exception::myfault): New SEH handler for 64 bit. * gendef (_sigbe): Set tls_pathbuf counters to 0 explicitely when returning to the caller. * ntdll.h: Move a comment to a better place. (struct _SCOPE_TABLE): Define on 64 bit. * thread.cc (verifyable_object_isvalid): Remove gcc 4.7 workaround. * tls_pbuf.cc (tls_pbuf): Fix to accommodate new place of pathbufs. (tls_pathbuf::destroy): Change type of loop variables to uint32_t. * tls_pbuf.h (class tmp_pathbuf): Change type of buffer counters to uint32_t. Accommodate new place of pathbufs. * tlsoffsets.h: Regenerate. * tlsoffsets64.h: Regenerate.
2014-08-22 17:21:33 +08:00
EXCEPTION_DISPOSITION
exception::handle (EXCEPTION_RECORD *e, exception_list *frame, CONTEXT *in,
PDISPATCHER_CONTEXT dispatch)
2000-02-18 03:38:33 +08:00
{
static int NO_COPY debugging = 0;
_cygtls& me = _my_tls;
if (debugging && ++debugging < 500000)
{
SetThreadPriority (hMainThread, THREAD_PRIORITY_NORMAL);
return ExceptionContinueExecution;
}
2000-02-18 03:38:33 +08:00
/* If we're exiting, tell Windows to keep looking for an
exception handler. */
if (exit_state || e->ExceptionFlags)
return ExceptionContinueSearch;
2000-02-18 03:38:33 +08:00
* cygtls.h (_cygtls::signal_exit): Delete from class. * exception.h (cygwin_exception): New class. (cygwin_exception::dumpstack): Declare new function. (cygwin_exception::context): Ditto. (cygwin_exception::dump_exception): Ditto. * exceptions.cc (cygwin_exception::dump_exception): Move into cygwin_exception class. Accommodate new variable names. (cygwin_exception::dumpstack): Ditto stackdump -> dumpstack. (exception::handle): Move andreas processing earlier. Defer signal processing decisions to the signal thread where they belong. Pass exception information to sig_send via new siginfo_t si_cyg field. (ctrl_c_handler): Wait for SIGHUP signal to be processed since it could cause a process exit and we don't want races with thread exit lock. (signal_exit): Move back here from sigproc.cc. Modify arguments and remove from sigpacket class. Decide when to dump core based on signal type. (sigpacket::process): Handle exiting signals in context of threads rather than in the signal thread. Signal debugger on non-Windows signals. Remove setup_signal_exit call. * sigproc.cc (no_signals_available): Remove argument. (signal_exit_code): Delete. (close_my_readsig): Ditto. (_cygtls::signal_exit): Move to exceptions.cc. (sigproc_terminate): Don't attempt to terminate signal thread. (setup_signal_exit): Delete. (exit_thread): Use new si_cyg entry in siginfo_t. (sig_send): Just use empty initializer for si. Accommodate change in no_signals_available argument. (wait_sig): Remove attempt to "go asynchronous" on process exit. Delete __SIGEXIT handling. Don't ever exit. * sigproc.h: Remove __SIGEXIT from signal enum. Renumber. * include/cygwin/signal.h (siginfo_t): Add si_cyg entry.
2013-01-03 02:34:06 +08:00
siginfo_t si = {};
si.si_code = SI_KERNEL;
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/* Coerce win32 value to posix value. */
switch ((NTSTATUS) e->ExceptionCode)
2000-02-18 03:38:33 +08:00
{
case STATUS_FLOAT_DIVIDE_BY_ZERO:
si.si_signo = SIGFPE;
si.si_code = FPE_FLTDIV;
break;
case STATUS_FLOAT_DENORMAL_OPERAND:
2000-02-18 03:38:33 +08:00
case STATUS_FLOAT_INVALID_OPERATION:
si.si_signo = SIGFPE;
si.si_code = FPE_FLTINV;
break;
2000-02-18 03:38:33 +08:00
case STATUS_FLOAT_STACK_CHECK:
* cygwin/include/signal.h: Add copyright notice. * cygwin.din: Make clock SIGFE. Add clock_gettime, sigwaitinfo, timer_create, timer_delete, timer_settime. * include/cygwin/version.h: Reflect above additions. * fork.cc (fork_child): Call fixup_timers_after_fork. * signal.cc (sigwait): Remove unused variable. * timer.cc: New file. (clock_gettime): Define new function. (timer_tracker): Define new struct used by timer functions. (timer_tracker::timer_tracker): New function. (to_us): New function. (timer_thread): New function. (timer_tracker::settime): New function. (timer_create): New function. (timer_settime): New function. (timer_delete): New function. (fixup_timers_after_fork): New function. * cygthread.cc: Bump thread count. * signal.cc (sigwaitinfo): Define new function. (sigwait): Redefine based on sigwaitinfo. * include/cygwin/signal.h (sigwaitinfo): Declare. (sigwait): Ditto. * dtable.cc (dtable::vfork_parent_restore): Avoid double close of ctty when ctty == ctty_on_hold. * cygtls.h (_threadinfo::threadkill): New element. (_threadinfo::set_threadkill): Declare new function. (_threadinfo::reset_threadkill): Declare new function. * dcrt0.cc (dcrt0_1): Call here so that it will be possible to attach to running process with #(*& Windows Me/9x. (initial_env): Try to initialize strace if uninitialized. * gendef: Don't zero signal if threadkill is set since that will happen in the called function. * signal.cc (sigwait): Ensure cleanup in error conditions. * sigproc.cc (sig_send): Clear packet mask storage. (wait_subproc): Fill in child exit code in siginfo_t structure. * thread.cc (pthread_kill): Set threadkill flag. * tlsoffsets.h: Regenerate. Throughout, use siginfo_t to fill out all signal information for "kernel" signals. * cygtls.h (_threadinfo::set_siginfo): Declare new function. * cygtls.cc (_threadinfo::set_siginfo): Define new function. * dcrt0.cc (do_exit): Accommodate siginfo_t considerations. * exceptions.cc (handle_exceptions): Ditto. (sig_handle_tty_stop): Ditto. (ctrl_c_handler): Use killsys() to send signal. (sigpacket::process): Rename from sig_handle. Use siginfo_t field from sigpacket for everything. (tty_min::kill_pgrp): Accommodate siginfo_t considerations. (fhandler_termios::bg_check): Ditto. * fhandler_tty.cc (fhandler_tty_slave::ioctl): Use killsys() to send signal. * signal.cc (kill_worker): Rewrite to use siginfo_t second argument. (kill_pgrp): Ditto. (kill0): Define new function pulled from kill(). (kill): Rewrite as frontend to kill0. (killsys): Define new function. * sigproc.cc (sigelem): Eliminate. (sigpacket): Move to sigproc.h. Subsume sigelem. (pending_signals): Use sigpacket rather than sigelem for everything. (sig_clear): Ditto. (wait_sig): Ditto. (sig_send): Rewrite to use siginfo_t argument. (sig_send): New function wratpper to sig_send with siginfo_t argument. (wait_subproc): Accommodate siginfo_t considerations. * thread.cc (pthread_kill): Ditto. * sigproc.h (sigpacket): Move here. (sigpacket::process): Declare "new" function. (sig_handle): Eliminate declaration. (sig_send): Declare with new paramaters. (killsys): Declare new function. (kill_pgrp): Declare. * winsup.h: Move some signal-specific stuff to sigproc.h. * include/cygwin/signal.h: Tweak some siginfo_t stuff.
2004-01-19 13:46:54 +08:00
si.si_signo = SIGFPE;
si.si_code = FPE_FLTSUB;
* cygwin/include/signal.h: Add copyright notice. * cygwin.din: Make clock SIGFE. Add clock_gettime, sigwaitinfo, timer_create, timer_delete, timer_settime. * include/cygwin/version.h: Reflect above additions. * fork.cc (fork_child): Call fixup_timers_after_fork. * signal.cc (sigwait): Remove unused variable. * timer.cc: New file. (clock_gettime): Define new function. (timer_tracker): Define new struct used by timer functions. (timer_tracker::timer_tracker): New function. (to_us): New function. (timer_thread): New function. (timer_tracker::settime): New function. (timer_create): New function. (timer_settime): New function. (timer_delete): New function. (fixup_timers_after_fork): New function. * cygthread.cc: Bump thread count. * signal.cc (sigwaitinfo): Define new function. (sigwait): Redefine based on sigwaitinfo. * include/cygwin/signal.h (sigwaitinfo): Declare. (sigwait): Ditto. * dtable.cc (dtable::vfork_parent_restore): Avoid double close of ctty when ctty == ctty_on_hold. * cygtls.h (_threadinfo::threadkill): New element. (_threadinfo::set_threadkill): Declare new function. (_threadinfo::reset_threadkill): Declare new function. * dcrt0.cc (dcrt0_1): Call here so that it will be possible to attach to running process with #(*& Windows Me/9x. (initial_env): Try to initialize strace if uninitialized. * gendef: Don't zero signal if threadkill is set since that will happen in the called function. * signal.cc (sigwait): Ensure cleanup in error conditions. * sigproc.cc (sig_send): Clear packet mask storage. (wait_subproc): Fill in child exit code in siginfo_t structure. * thread.cc (pthread_kill): Set threadkill flag. * tlsoffsets.h: Regenerate. Throughout, use siginfo_t to fill out all signal information for "kernel" signals. * cygtls.h (_threadinfo::set_siginfo): Declare new function. * cygtls.cc (_threadinfo::set_siginfo): Define new function. * dcrt0.cc (do_exit): Accommodate siginfo_t considerations. * exceptions.cc (handle_exceptions): Ditto. (sig_handle_tty_stop): Ditto. (ctrl_c_handler): Use killsys() to send signal. (sigpacket::process): Rename from sig_handle. Use siginfo_t field from sigpacket for everything. (tty_min::kill_pgrp): Accommodate siginfo_t considerations. (fhandler_termios::bg_check): Ditto. * fhandler_tty.cc (fhandler_tty_slave::ioctl): Use killsys() to send signal. * signal.cc (kill_worker): Rewrite to use siginfo_t second argument. (kill_pgrp): Ditto. (kill0): Define new function pulled from kill(). (kill): Rewrite as frontend to kill0. (killsys): Define new function. * sigproc.cc (sigelem): Eliminate. (sigpacket): Move to sigproc.h. Subsume sigelem. (pending_signals): Use sigpacket rather than sigelem for everything. (sig_clear): Ditto. (wait_sig): Ditto. (sig_send): Rewrite to use siginfo_t argument. (sig_send): New function wratpper to sig_send with siginfo_t argument. (wait_subproc): Accommodate siginfo_t considerations. * thread.cc (pthread_kill): Ditto. * sigproc.h (sigpacket): Move here. (sigpacket::process): Declare "new" function. (sig_handle): Eliminate declaration. (sig_send): Declare with new paramaters. (killsys): Declare new function. (kill_pgrp): Declare. * winsup.h: Move some signal-specific stuff to sigproc.h. * include/cygwin/signal.h: Tweak some siginfo_t stuff.
2004-01-19 13:46:54 +08:00
break;
case STATUS_FLOAT_INEXACT_RESULT:
si.si_signo = SIGFPE;
si.si_code = FPE_FLTRES;
* cygwin/include/signal.h: Add copyright notice. * cygwin.din: Make clock SIGFE. Add clock_gettime, sigwaitinfo, timer_create, timer_delete, timer_settime. * include/cygwin/version.h: Reflect above additions. * fork.cc (fork_child): Call fixup_timers_after_fork. * signal.cc (sigwait): Remove unused variable. * timer.cc: New file. (clock_gettime): Define new function. (timer_tracker): Define new struct used by timer functions. (timer_tracker::timer_tracker): New function. (to_us): New function. (timer_thread): New function. (timer_tracker::settime): New function. (timer_create): New function. (timer_settime): New function. (timer_delete): New function. (fixup_timers_after_fork): New function. * cygthread.cc: Bump thread count. * signal.cc (sigwaitinfo): Define new function. (sigwait): Redefine based on sigwaitinfo. * include/cygwin/signal.h (sigwaitinfo): Declare. (sigwait): Ditto. * dtable.cc (dtable::vfork_parent_restore): Avoid double close of ctty when ctty == ctty_on_hold. * cygtls.h (_threadinfo::threadkill): New element. (_threadinfo::set_threadkill): Declare new function. (_threadinfo::reset_threadkill): Declare new function. * dcrt0.cc (dcrt0_1): Call here so that it will be possible to attach to running process with #(*& Windows Me/9x. (initial_env): Try to initialize strace if uninitialized. * gendef: Don't zero signal if threadkill is set since that will happen in the called function. * signal.cc (sigwait): Ensure cleanup in error conditions. * sigproc.cc (sig_send): Clear packet mask storage. (wait_subproc): Fill in child exit code in siginfo_t structure. * thread.cc (pthread_kill): Set threadkill flag. * tlsoffsets.h: Regenerate. Throughout, use siginfo_t to fill out all signal information for "kernel" signals. * cygtls.h (_threadinfo::set_siginfo): Declare new function. * cygtls.cc (_threadinfo::set_siginfo): Define new function. * dcrt0.cc (do_exit): Accommodate siginfo_t considerations. * exceptions.cc (handle_exceptions): Ditto. (sig_handle_tty_stop): Ditto. (ctrl_c_handler): Use killsys() to send signal. (sigpacket::process): Rename from sig_handle. Use siginfo_t field from sigpacket for everything. (tty_min::kill_pgrp): Accommodate siginfo_t considerations. (fhandler_termios::bg_check): Ditto. * fhandler_tty.cc (fhandler_tty_slave::ioctl): Use killsys() to send signal. * signal.cc (kill_worker): Rewrite to use siginfo_t second argument. (kill_pgrp): Ditto. (kill0): Define new function pulled from kill(). (kill): Rewrite as frontend to kill0. (killsys): Define new function. * sigproc.cc (sigelem): Eliminate. (sigpacket): Move to sigproc.h. Subsume sigelem. (pending_signals): Use sigpacket rather than sigelem for everything. (sig_clear): Ditto. (wait_sig): Ditto. (sig_send): Rewrite to use siginfo_t argument. (sig_send): New function wratpper to sig_send with siginfo_t argument. (wait_subproc): Accommodate siginfo_t considerations. * thread.cc (pthread_kill): Ditto. * sigproc.h (sigpacket): Move here. (sigpacket::process): Declare "new" function. (sig_handle): Eliminate declaration. (sig_send): Declare with new paramaters. (killsys): Declare new function. (kill_pgrp): Declare. * winsup.h: Move some signal-specific stuff to sigproc.h. * include/cygwin/signal.h: Tweak some siginfo_t stuff.
2004-01-19 13:46:54 +08:00
break;
case STATUS_FLOAT_OVERFLOW:
si.si_signo = SIGFPE;
si.si_code = FPE_FLTOVF;
* cygwin/include/signal.h: Add copyright notice. * cygwin.din: Make clock SIGFE. Add clock_gettime, sigwaitinfo, timer_create, timer_delete, timer_settime. * include/cygwin/version.h: Reflect above additions. * fork.cc (fork_child): Call fixup_timers_after_fork. * signal.cc (sigwait): Remove unused variable. * timer.cc: New file. (clock_gettime): Define new function. (timer_tracker): Define new struct used by timer functions. (timer_tracker::timer_tracker): New function. (to_us): New function. (timer_thread): New function. (timer_tracker::settime): New function. (timer_create): New function. (timer_settime): New function. (timer_delete): New function. (fixup_timers_after_fork): New function. * cygthread.cc: Bump thread count. * signal.cc (sigwaitinfo): Define new function. (sigwait): Redefine based on sigwaitinfo. * include/cygwin/signal.h (sigwaitinfo): Declare. (sigwait): Ditto. * dtable.cc (dtable::vfork_parent_restore): Avoid double close of ctty when ctty == ctty_on_hold. * cygtls.h (_threadinfo::threadkill): New element. (_threadinfo::set_threadkill): Declare new function. (_threadinfo::reset_threadkill): Declare new function. * dcrt0.cc (dcrt0_1): Call here so that it will be possible to attach to running process with #(*& Windows Me/9x. (initial_env): Try to initialize strace if uninitialized. * gendef: Don't zero signal if threadkill is set since that will happen in the called function. * signal.cc (sigwait): Ensure cleanup in error conditions. * sigproc.cc (sig_send): Clear packet mask storage. (wait_subproc): Fill in child exit code in siginfo_t structure. * thread.cc (pthread_kill): Set threadkill flag. * tlsoffsets.h: Regenerate. Throughout, use siginfo_t to fill out all signal information for "kernel" signals. * cygtls.h (_threadinfo::set_siginfo): Declare new function. * cygtls.cc (_threadinfo::set_siginfo): Define new function. * dcrt0.cc (do_exit): Accommodate siginfo_t considerations. * exceptions.cc (handle_exceptions): Ditto. (sig_handle_tty_stop): Ditto. (ctrl_c_handler): Use killsys() to send signal. (sigpacket::process): Rename from sig_handle. Use siginfo_t field from sigpacket for everything. (tty_min::kill_pgrp): Accommodate siginfo_t considerations. (fhandler_termios::bg_check): Ditto. * fhandler_tty.cc (fhandler_tty_slave::ioctl): Use killsys() to send signal. * signal.cc (kill_worker): Rewrite to use siginfo_t second argument. (kill_pgrp): Ditto. (kill0): Define new function pulled from kill(). (kill): Rewrite as frontend to kill0. (killsys): Define new function. * sigproc.cc (sigelem): Eliminate. (sigpacket): Move to sigproc.h. Subsume sigelem. (pending_signals): Use sigpacket rather than sigelem for everything. (sig_clear): Ditto. (wait_sig): Ditto. (sig_send): Rewrite to use siginfo_t argument. (sig_send): New function wratpper to sig_send with siginfo_t argument. (wait_subproc): Accommodate siginfo_t considerations. * thread.cc (pthread_kill): Ditto. * sigproc.h (sigpacket): Move here. (sigpacket::process): Declare "new" function. (sig_handle): Eliminate declaration. (sig_send): Declare with new paramaters. (killsys): Declare new function. (kill_pgrp): Declare. * winsup.h: Move some signal-specific stuff to sigproc.h. * include/cygwin/signal.h: Tweak some siginfo_t stuff.
2004-01-19 13:46:54 +08:00
break;
2000-02-18 03:38:33 +08:00
case STATUS_FLOAT_UNDERFLOW:
* cygwin/include/signal.h: Add copyright notice. * cygwin.din: Make clock SIGFE. Add clock_gettime, sigwaitinfo, timer_create, timer_delete, timer_settime. * include/cygwin/version.h: Reflect above additions. * fork.cc (fork_child): Call fixup_timers_after_fork. * signal.cc (sigwait): Remove unused variable. * timer.cc: New file. (clock_gettime): Define new function. (timer_tracker): Define new struct used by timer functions. (timer_tracker::timer_tracker): New function. (to_us): New function. (timer_thread): New function. (timer_tracker::settime): New function. (timer_create): New function. (timer_settime): New function. (timer_delete): New function. (fixup_timers_after_fork): New function. * cygthread.cc: Bump thread count. * signal.cc (sigwaitinfo): Define new function. (sigwait): Redefine based on sigwaitinfo. * include/cygwin/signal.h (sigwaitinfo): Declare. (sigwait): Ditto. * dtable.cc (dtable::vfork_parent_restore): Avoid double close of ctty when ctty == ctty_on_hold. * cygtls.h (_threadinfo::threadkill): New element. (_threadinfo::set_threadkill): Declare new function. (_threadinfo::reset_threadkill): Declare new function. * dcrt0.cc (dcrt0_1): Call here so that it will be possible to attach to running process with #(*& Windows Me/9x. (initial_env): Try to initialize strace if uninitialized. * gendef: Don't zero signal if threadkill is set since that will happen in the called function. * signal.cc (sigwait): Ensure cleanup in error conditions. * sigproc.cc (sig_send): Clear packet mask storage. (wait_subproc): Fill in child exit code in siginfo_t structure. * thread.cc (pthread_kill): Set threadkill flag. * tlsoffsets.h: Regenerate. Throughout, use siginfo_t to fill out all signal information for "kernel" signals. * cygtls.h (_threadinfo::set_siginfo): Declare new function. * cygtls.cc (_threadinfo::set_siginfo): Define new function. * dcrt0.cc (do_exit): Accommodate siginfo_t considerations. * exceptions.cc (handle_exceptions): Ditto. (sig_handle_tty_stop): Ditto. (ctrl_c_handler): Use killsys() to send signal. (sigpacket::process): Rename from sig_handle. Use siginfo_t field from sigpacket for everything. (tty_min::kill_pgrp): Accommodate siginfo_t considerations. (fhandler_termios::bg_check): Ditto. * fhandler_tty.cc (fhandler_tty_slave::ioctl): Use killsys() to send signal. * signal.cc (kill_worker): Rewrite to use siginfo_t second argument. (kill_pgrp): Ditto. (kill0): Define new function pulled from kill(). (kill): Rewrite as frontend to kill0. (killsys): Define new function. * sigproc.cc (sigelem): Eliminate. (sigpacket): Move to sigproc.h. Subsume sigelem. (pending_signals): Use sigpacket rather than sigelem for everything. (sig_clear): Ditto. (wait_sig): Ditto. (sig_send): Rewrite to use siginfo_t argument. (sig_send): New function wratpper to sig_send with siginfo_t argument. (wait_subproc): Accommodate siginfo_t considerations. * thread.cc (pthread_kill): Ditto. * sigproc.h (sigpacket): Move here. (sigpacket::process): Declare "new" function. (sig_handle): Eliminate declaration. (sig_send): Declare with new paramaters. (killsys): Declare new function. (kill_pgrp): Declare. * winsup.h: Move some signal-specific stuff to sigproc.h. * include/cygwin/signal.h: Tweak some siginfo_t stuff.
2004-01-19 13:46:54 +08:00
si.si_signo = SIGFPE;
si.si_code = FPE_FLTUND;
* cygwin/include/signal.h: Add copyright notice. * cygwin.din: Make clock SIGFE. Add clock_gettime, sigwaitinfo, timer_create, timer_delete, timer_settime. * include/cygwin/version.h: Reflect above additions. * fork.cc (fork_child): Call fixup_timers_after_fork. * signal.cc (sigwait): Remove unused variable. * timer.cc: New file. (clock_gettime): Define new function. (timer_tracker): Define new struct used by timer functions. (timer_tracker::timer_tracker): New function. (to_us): New function. (timer_thread): New function. (timer_tracker::settime): New function. (timer_create): New function. (timer_settime): New function. (timer_delete): New function. (fixup_timers_after_fork): New function. * cygthread.cc: Bump thread count. * signal.cc (sigwaitinfo): Define new function. (sigwait): Redefine based on sigwaitinfo. * include/cygwin/signal.h (sigwaitinfo): Declare. (sigwait): Ditto. * dtable.cc (dtable::vfork_parent_restore): Avoid double close of ctty when ctty == ctty_on_hold. * cygtls.h (_threadinfo::threadkill): New element. (_threadinfo::set_threadkill): Declare new function. (_threadinfo::reset_threadkill): Declare new function. * dcrt0.cc (dcrt0_1): Call here so that it will be possible to attach to running process with #(*& Windows Me/9x. (initial_env): Try to initialize strace if uninitialized. * gendef: Don't zero signal if threadkill is set since that will happen in the called function. * signal.cc (sigwait): Ensure cleanup in error conditions. * sigproc.cc (sig_send): Clear packet mask storage. (wait_subproc): Fill in child exit code in siginfo_t structure. * thread.cc (pthread_kill): Set threadkill flag. * tlsoffsets.h: Regenerate. Throughout, use siginfo_t to fill out all signal information for "kernel" signals. * cygtls.h (_threadinfo::set_siginfo): Declare new function. * cygtls.cc (_threadinfo::set_siginfo): Define new function. * dcrt0.cc (do_exit): Accommodate siginfo_t considerations. * exceptions.cc (handle_exceptions): Ditto. (sig_handle_tty_stop): Ditto. (ctrl_c_handler): Use killsys() to send signal. (sigpacket::process): Rename from sig_handle. Use siginfo_t field from sigpacket for everything. (tty_min::kill_pgrp): Accommodate siginfo_t considerations. (fhandler_termios::bg_check): Ditto. * fhandler_tty.cc (fhandler_tty_slave::ioctl): Use killsys() to send signal. * signal.cc (kill_worker): Rewrite to use siginfo_t second argument. (kill_pgrp): Ditto. (kill0): Define new function pulled from kill(). (kill): Rewrite as frontend to kill0. (killsys): Define new function. * sigproc.cc (sigelem): Eliminate. (sigpacket): Move to sigproc.h. Subsume sigelem. (pending_signals): Use sigpacket rather than sigelem for everything. (sig_clear): Ditto. (wait_sig): Ditto. (sig_send): Rewrite to use siginfo_t argument. (sig_send): New function wratpper to sig_send with siginfo_t argument. (wait_subproc): Accommodate siginfo_t considerations. * thread.cc (pthread_kill): Ditto. * sigproc.h (sigpacket): Move here. (sigpacket::process): Declare "new" function. (sig_handle): Eliminate declaration. (sig_send): Declare with new paramaters. (killsys): Declare new function. (kill_pgrp): Declare. * winsup.h: Move some signal-specific stuff to sigproc.h. * include/cygwin/signal.h: Tweak some siginfo_t stuff.
2004-01-19 13:46:54 +08:00
break;
2000-02-18 03:38:33 +08:00
case STATUS_INTEGER_DIVIDE_BY_ZERO:
* cygwin/include/signal.h: Add copyright notice. * cygwin.din: Make clock SIGFE. Add clock_gettime, sigwaitinfo, timer_create, timer_delete, timer_settime. * include/cygwin/version.h: Reflect above additions. * fork.cc (fork_child): Call fixup_timers_after_fork. * signal.cc (sigwait): Remove unused variable. * timer.cc: New file. (clock_gettime): Define new function. (timer_tracker): Define new struct used by timer functions. (timer_tracker::timer_tracker): New function. (to_us): New function. (timer_thread): New function. (timer_tracker::settime): New function. (timer_create): New function. (timer_settime): New function. (timer_delete): New function. (fixup_timers_after_fork): New function. * cygthread.cc: Bump thread count. * signal.cc (sigwaitinfo): Define new function. (sigwait): Redefine based on sigwaitinfo. * include/cygwin/signal.h (sigwaitinfo): Declare. (sigwait): Ditto. * dtable.cc (dtable::vfork_parent_restore): Avoid double close of ctty when ctty == ctty_on_hold. * cygtls.h (_threadinfo::threadkill): New element. (_threadinfo::set_threadkill): Declare new function. (_threadinfo::reset_threadkill): Declare new function. * dcrt0.cc (dcrt0_1): Call here so that it will be possible to attach to running process with #(*& Windows Me/9x. (initial_env): Try to initialize strace if uninitialized. * gendef: Don't zero signal if threadkill is set since that will happen in the called function. * signal.cc (sigwait): Ensure cleanup in error conditions. * sigproc.cc (sig_send): Clear packet mask storage. (wait_subproc): Fill in child exit code in siginfo_t structure. * thread.cc (pthread_kill): Set threadkill flag. * tlsoffsets.h: Regenerate. Throughout, use siginfo_t to fill out all signal information for "kernel" signals. * cygtls.h (_threadinfo::set_siginfo): Declare new function. * cygtls.cc (_threadinfo::set_siginfo): Define new function. * dcrt0.cc (do_exit): Accommodate siginfo_t considerations. * exceptions.cc (handle_exceptions): Ditto. (sig_handle_tty_stop): Ditto. (ctrl_c_handler): Use killsys() to send signal. (sigpacket::process): Rename from sig_handle. Use siginfo_t field from sigpacket for everything. (tty_min::kill_pgrp): Accommodate siginfo_t considerations. (fhandler_termios::bg_check): Ditto. * fhandler_tty.cc (fhandler_tty_slave::ioctl): Use killsys() to send signal. * signal.cc (kill_worker): Rewrite to use siginfo_t second argument. (kill_pgrp): Ditto. (kill0): Define new function pulled from kill(). (kill): Rewrite as frontend to kill0. (killsys): Define new function. * sigproc.cc (sigelem): Eliminate. (sigpacket): Move to sigproc.h. Subsume sigelem. (pending_signals): Use sigpacket rather than sigelem for everything. (sig_clear): Ditto. (wait_sig): Ditto. (sig_send): Rewrite to use siginfo_t argument. (sig_send): New function wratpper to sig_send with siginfo_t argument. (wait_subproc): Accommodate siginfo_t considerations. * thread.cc (pthread_kill): Ditto. * sigproc.h (sigpacket): Move here. (sigpacket::process): Declare "new" function. (sig_handle): Eliminate declaration. (sig_send): Declare with new paramaters. (killsys): Declare new function. (kill_pgrp): Declare. * winsup.h: Move some signal-specific stuff to sigproc.h. * include/cygwin/signal.h: Tweak some siginfo_t stuff.
2004-01-19 13:46:54 +08:00
si.si_signo = SIGFPE;
si.si_code = FPE_INTDIV;
* cygwin/include/signal.h: Add copyright notice. * cygwin.din: Make clock SIGFE. Add clock_gettime, sigwaitinfo, timer_create, timer_delete, timer_settime. * include/cygwin/version.h: Reflect above additions. * fork.cc (fork_child): Call fixup_timers_after_fork. * signal.cc (sigwait): Remove unused variable. * timer.cc: New file. (clock_gettime): Define new function. (timer_tracker): Define new struct used by timer functions. (timer_tracker::timer_tracker): New function. (to_us): New function. (timer_thread): New function. (timer_tracker::settime): New function. (timer_create): New function. (timer_settime): New function. (timer_delete): New function. (fixup_timers_after_fork): New function. * cygthread.cc: Bump thread count. * signal.cc (sigwaitinfo): Define new function. (sigwait): Redefine based on sigwaitinfo. * include/cygwin/signal.h (sigwaitinfo): Declare. (sigwait): Ditto. * dtable.cc (dtable::vfork_parent_restore): Avoid double close of ctty when ctty == ctty_on_hold. * cygtls.h (_threadinfo::threadkill): New element. (_threadinfo::set_threadkill): Declare new function. (_threadinfo::reset_threadkill): Declare new function. * dcrt0.cc (dcrt0_1): Call here so that it will be possible to attach to running process with #(*& Windows Me/9x. (initial_env): Try to initialize strace if uninitialized. * gendef: Don't zero signal if threadkill is set since that will happen in the called function. * signal.cc (sigwait): Ensure cleanup in error conditions. * sigproc.cc (sig_send): Clear packet mask storage. (wait_subproc): Fill in child exit code in siginfo_t structure. * thread.cc (pthread_kill): Set threadkill flag. * tlsoffsets.h: Regenerate. Throughout, use siginfo_t to fill out all signal information for "kernel" signals. * cygtls.h (_threadinfo::set_siginfo): Declare new function. * cygtls.cc (_threadinfo::set_siginfo): Define new function. * dcrt0.cc (do_exit): Accommodate siginfo_t considerations. * exceptions.cc (handle_exceptions): Ditto. (sig_handle_tty_stop): Ditto. (ctrl_c_handler): Use killsys() to send signal. (sigpacket::process): Rename from sig_handle. Use siginfo_t field from sigpacket for everything. (tty_min::kill_pgrp): Accommodate siginfo_t considerations. (fhandler_termios::bg_check): Ditto. * fhandler_tty.cc (fhandler_tty_slave::ioctl): Use killsys() to send signal. * signal.cc (kill_worker): Rewrite to use siginfo_t second argument. (kill_pgrp): Ditto. (kill0): Define new function pulled from kill(). (kill): Rewrite as frontend to kill0. (killsys): Define new function. * sigproc.cc (sigelem): Eliminate. (sigpacket): Move to sigproc.h. Subsume sigelem. (pending_signals): Use sigpacket rather than sigelem for everything. (sig_clear): Ditto. (wait_sig): Ditto. (sig_send): Rewrite to use siginfo_t argument. (sig_send): New function wratpper to sig_send with siginfo_t argument. (wait_subproc): Accommodate siginfo_t considerations. * thread.cc (pthread_kill): Ditto. * sigproc.h (sigpacket): Move here. (sigpacket::process): Declare "new" function. (sig_handle): Eliminate declaration. (sig_send): Declare with new paramaters. (killsys): Declare new function. (kill_pgrp): Declare. * winsup.h: Move some signal-specific stuff to sigproc.h. * include/cygwin/signal.h: Tweak some siginfo_t stuff.
2004-01-19 13:46:54 +08:00
break;
2000-02-18 03:38:33 +08:00
case STATUS_INTEGER_OVERFLOW:
* cygwin/include/signal.h: Add copyright notice. * cygwin.din: Make clock SIGFE. Add clock_gettime, sigwaitinfo, timer_create, timer_delete, timer_settime. * include/cygwin/version.h: Reflect above additions. * fork.cc (fork_child): Call fixup_timers_after_fork. * signal.cc (sigwait): Remove unused variable. * timer.cc: New file. (clock_gettime): Define new function. (timer_tracker): Define new struct used by timer functions. (timer_tracker::timer_tracker): New function. (to_us): New function. (timer_thread): New function. (timer_tracker::settime): New function. (timer_create): New function. (timer_settime): New function. (timer_delete): New function. (fixup_timers_after_fork): New function. * cygthread.cc: Bump thread count. * signal.cc (sigwaitinfo): Define new function. (sigwait): Redefine based on sigwaitinfo. * include/cygwin/signal.h (sigwaitinfo): Declare. (sigwait): Ditto. * dtable.cc (dtable::vfork_parent_restore): Avoid double close of ctty when ctty == ctty_on_hold. * cygtls.h (_threadinfo::threadkill): New element. (_threadinfo::set_threadkill): Declare new function. (_threadinfo::reset_threadkill): Declare new function. * dcrt0.cc (dcrt0_1): Call here so that it will be possible to attach to running process with #(*& Windows Me/9x. (initial_env): Try to initialize strace if uninitialized. * gendef: Don't zero signal if threadkill is set since that will happen in the called function. * signal.cc (sigwait): Ensure cleanup in error conditions. * sigproc.cc (sig_send): Clear packet mask storage. (wait_subproc): Fill in child exit code in siginfo_t structure. * thread.cc (pthread_kill): Set threadkill flag. * tlsoffsets.h: Regenerate. Throughout, use siginfo_t to fill out all signal information for "kernel" signals. * cygtls.h (_threadinfo::set_siginfo): Declare new function. * cygtls.cc (_threadinfo::set_siginfo): Define new function. * dcrt0.cc (do_exit): Accommodate siginfo_t considerations. * exceptions.cc (handle_exceptions): Ditto. (sig_handle_tty_stop): Ditto. (ctrl_c_handler): Use killsys() to send signal. (sigpacket::process): Rename from sig_handle. Use siginfo_t field from sigpacket for everything. (tty_min::kill_pgrp): Accommodate siginfo_t considerations. (fhandler_termios::bg_check): Ditto. * fhandler_tty.cc (fhandler_tty_slave::ioctl): Use killsys() to send signal. * signal.cc (kill_worker): Rewrite to use siginfo_t second argument. (kill_pgrp): Ditto. (kill0): Define new function pulled from kill(). (kill): Rewrite as frontend to kill0. (killsys): Define new function. * sigproc.cc (sigelem): Eliminate. (sigpacket): Move to sigproc.h. Subsume sigelem. (pending_signals): Use sigpacket rather than sigelem for everything. (sig_clear): Ditto. (wait_sig): Ditto. (sig_send): Rewrite to use siginfo_t argument. (sig_send): New function wratpper to sig_send with siginfo_t argument. (wait_subproc): Accommodate siginfo_t considerations. * thread.cc (pthread_kill): Ditto. * sigproc.h (sigpacket): Move here. (sigpacket::process): Declare "new" function. (sig_handle): Eliminate declaration. (sig_send): Declare with new paramaters. (killsys): Declare new function. (kill_pgrp): Declare. * winsup.h: Move some signal-specific stuff to sigproc.h. * include/cygwin/signal.h: Tweak some siginfo_t stuff.
2004-01-19 13:46:54 +08:00
si.si_signo = SIGFPE;
si.si_code = FPE_INTOVF;
2000-02-18 03:38:33 +08:00
break;
case STATUS_ILLEGAL_INSTRUCTION:
* cygwin/include/signal.h: Add copyright notice. * cygwin.din: Make clock SIGFE. Add clock_gettime, sigwaitinfo, timer_create, timer_delete, timer_settime. * include/cygwin/version.h: Reflect above additions. * fork.cc (fork_child): Call fixup_timers_after_fork. * signal.cc (sigwait): Remove unused variable. * timer.cc: New file. (clock_gettime): Define new function. (timer_tracker): Define new struct used by timer functions. (timer_tracker::timer_tracker): New function. (to_us): New function. (timer_thread): New function. (timer_tracker::settime): New function. (timer_create): New function. (timer_settime): New function. (timer_delete): New function. (fixup_timers_after_fork): New function. * cygthread.cc: Bump thread count. * signal.cc (sigwaitinfo): Define new function. (sigwait): Redefine based on sigwaitinfo. * include/cygwin/signal.h (sigwaitinfo): Declare. (sigwait): Ditto. * dtable.cc (dtable::vfork_parent_restore): Avoid double close of ctty when ctty == ctty_on_hold. * cygtls.h (_threadinfo::threadkill): New element. (_threadinfo::set_threadkill): Declare new function. (_threadinfo::reset_threadkill): Declare new function. * dcrt0.cc (dcrt0_1): Call here so that it will be possible to attach to running process with #(*& Windows Me/9x. (initial_env): Try to initialize strace if uninitialized. * gendef: Don't zero signal if threadkill is set since that will happen in the called function. * signal.cc (sigwait): Ensure cleanup in error conditions. * sigproc.cc (sig_send): Clear packet mask storage. (wait_subproc): Fill in child exit code in siginfo_t structure. * thread.cc (pthread_kill): Set threadkill flag. * tlsoffsets.h: Regenerate. Throughout, use siginfo_t to fill out all signal information for "kernel" signals. * cygtls.h (_threadinfo::set_siginfo): Declare new function. * cygtls.cc (_threadinfo::set_siginfo): Define new function. * dcrt0.cc (do_exit): Accommodate siginfo_t considerations. * exceptions.cc (handle_exceptions): Ditto. (sig_handle_tty_stop): Ditto. (ctrl_c_handler): Use killsys() to send signal. (sigpacket::process): Rename from sig_handle. Use siginfo_t field from sigpacket for everything. (tty_min::kill_pgrp): Accommodate siginfo_t considerations. (fhandler_termios::bg_check): Ditto. * fhandler_tty.cc (fhandler_tty_slave::ioctl): Use killsys() to send signal. * signal.cc (kill_worker): Rewrite to use siginfo_t second argument. (kill_pgrp): Ditto. (kill0): Define new function pulled from kill(). (kill): Rewrite as frontend to kill0. (killsys): Define new function. * sigproc.cc (sigelem): Eliminate. (sigpacket): Move to sigproc.h. Subsume sigelem. (pending_signals): Use sigpacket rather than sigelem for everything. (sig_clear): Ditto. (wait_sig): Ditto. (sig_send): Rewrite to use siginfo_t argument. (sig_send): New function wratpper to sig_send with siginfo_t argument. (wait_subproc): Accommodate siginfo_t considerations. * thread.cc (pthread_kill): Ditto. * sigproc.h (sigpacket): Move here. (sigpacket::process): Declare "new" function. (sig_handle): Eliminate declaration. (sig_send): Declare with new paramaters. (killsys): Declare new function. (kill_pgrp): Declare. * winsup.h: Move some signal-specific stuff to sigproc.h. * include/cygwin/signal.h: Tweak some siginfo_t stuff.
2004-01-19 13:46:54 +08:00
si.si_signo = SIGILL;
si.si_code = ILL_ILLOPC;
* cygwin/include/signal.h: Add copyright notice. * cygwin.din: Make clock SIGFE. Add clock_gettime, sigwaitinfo, timer_create, timer_delete, timer_settime. * include/cygwin/version.h: Reflect above additions. * fork.cc (fork_child): Call fixup_timers_after_fork. * signal.cc (sigwait): Remove unused variable. * timer.cc: New file. (clock_gettime): Define new function. (timer_tracker): Define new struct used by timer functions. (timer_tracker::timer_tracker): New function. (to_us): New function. (timer_thread): New function. (timer_tracker::settime): New function. (timer_create): New function. (timer_settime): New function. (timer_delete): New function. (fixup_timers_after_fork): New function. * cygthread.cc: Bump thread count. * signal.cc (sigwaitinfo): Define new function. (sigwait): Redefine based on sigwaitinfo. * include/cygwin/signal.h (sigwaitinfo): Declare. (sigwait): Ditto. * dtable.cc (dtable::vfork_parent_restore): Avoid double close of ctty when ctty == ctty_on_hold. * cygtls.h (_threadinfo::threadkill): New element. (_threadinfo::set_threadkill): Declare new function. (_threadinfo::reset_threadkill): Declare new function. * dcrt0.cc (dcrt0_1): Call here so that it will be possible to attach to running process with #(*& Windows Me/9x. (initial_env): Try to initialize strace if uninitialized. * gendef: Don't zero signal if threadkill is set since that will happen in the called function. * signal.cc (sigwait): Ensure cleanup in error conditions. * sigproc.cc (sig_send): Clear packet mask storage. (wait_subproc): Fill in child exit code in siginfo_t structure. * thread.cc (pthread_kill): Set threadkill flag. * tlsoffsets.h: Regenerate. Throughout, use siginfo_t to fill out all signal information for "kernel" signals. * cygtls.h (_threadinfo::set_siginfo): Declare new function. * cygtls.cc (_threadinfo::set_siginfo): Define new function. * dcrt0.cc (do_exit): Accommodate siginfo_t considerations. * exceptions.cc (handle_exceptions): Ditto. (sig_handle_tty_stop): Ditto. (ctrl_c_handler): Use killsys() to send signal. (sigpacket::process): Rename from sig_handle. Use siginfo_t field from sigpacket for everything. (tty_min::kill_pgrp): Accommodate siginfo_t considerations. (fhandler_termios::bg_check): Ditto. * fhandler_tty.cc (fhandler_tty_slave::ioctl): Use killsys() to send signal. * signal.cc (kill_worker): Rewrite to use siginfo_t second argument. (kill_pgrp): Ditto. (kill0): Define new function pulled from kill(). (kill): Rewrite as frontend to kill0. (killsys): Define new function. * sigproc.cc (sigelem): Eliminate. (sigpacket): Move to sigproc.h. Subsume sigelem. (pending_signals): Use sigpacket rather than sigelem for everything. (sig_clear): Ditto. (wait_sig): Ditto. (sig_send): Rewrite to use siginfo_t argument. (sig_send): New function wratpper to sig_send with siginfo_t argument. (wait_subproc): Accommodate siginfo_t considerations. * thread.cc (pthread_kill): Ditto. * sigproc.h (sigpacket): Move here. (sigpacket::process): Declare "new" function. (sig_handle): Eliminate declaration. (sig_send): Declare with new paramaters. (killsys): Declare new function. (kill_pgrp): Declare. * winsup.h: Move some signal-specific stuff to sigproc.h. * include/cygwin/signal.h: Tweak some siginfo_t stuff.
2004-01-19 13:46:54 +08:00
break;
2000-02-18 03:38:33 +08:00
case STATUS_PRIVILEGED_INSTRUCTION:
* cygwin/include/signal.h: Add copyright notice. * cygwin.din: Make clock SIGFE. Add clock_gettime, sigwaitinfo, timer_create, timer_delete, timer_settime. * include/cygwin/version.h: Reflect above additions. * fork.cc (fork_child): Call fixup_timers_after_fork. * signal.cc (sigwait): Remove unused variable. * timer.cc: New file. (clock_gettime): Define new function. (timer_tracker): Define new struct used by timer functions. (timer_tracker::timer_tracker): New function. (to_us): New function. (timer_thread): New function. (timer_tracker::settime): New function. (timer_create): New function. (timer_settime): New function. (timer_delete): New function. (fixup_timers_after_fork): New function. * cygthread.cc: Bump thread count. * signal.cc (sigwaitinfo): Define new function. (sigwait): Redefine based on sigwaitinfo. * include/cygwin/signal.h (sigwaitinfo): Declare. (sigwait): Ditto. * dtable.cc (dtable::vfork_parent_restore): Avoid double close of ctty when ctty == ctty_on_hold. * cygtls.h (_threadinfo::threadkill): New element. (_threadinfo::set_threadkill): Declare new function. (_threadinfo::reset_threadkill): Declare new function. * dcrt0.cc (dcrt0_1): Call here so that it will be possible to attach to running process with #(*& Windows Me/9x. (initial_env): Try to initialize strace if uninitialized. * gendef: Don't zero signal if threadkill is set since that will happen in the called function. * signal.cc (sigwait): Ensure cleanup in error conditions. * sigproc.cc (sig_send): Clear packet mask storage. (wait_subproc): Fill in child exit code in siginfo_t structure. * thread.cc (pthread_kill): Set threadkill flag. * tlsoffsets.h: Regenerate. Throughout, use siginfo_t to fill out all signal information for "kernel" signals. * cygtls.h (_threadinfo::set_siginfo): Declare new function. * cygtls.cc (_threadinfo::set_siginfo): Define new function. * dcrt0.cc (do_exit): Accommodate siginfo_t considerations. * exceptions.cc (handle_exceptions): Ditto. (sig_handle_tty_stop): Ditto. (ctrl_c_handler): Use killsys() to send signal. (sigpacket::process): Rename from sig_handle. Use siginfo_t field from sigpacket for everything. (tty_min::kill_pgrp): Accommodate siginfo_t considerations. (fhandler_termios::bg_check): Ditto. * fhandler_tty.cc (fhandler_tty_slave::ioctl): Use killsys() to send signal. * signal.cc (kill_worker): Rewrite to use siginfo_t second argument. (kill_pgrp): Ditto. (kill0): Define new function pulled from kill(). (kill): Rewrite as frontend to kill0. (killsys): Define new function. * sigproc.cc (sigelem): Eliminate. (sigpacket): Move to sigproc.h. Subsume sigelem. (pending_signals): Use sigpacket rather than sigelem for everything. (sig_clear): Ditto. (wait_sig): Ditto. (sig_send): Rewrite to use siginfo_t argument. (sig_send): New function wratpper to sig_send with siginfo_t argument. (wait_subproc): Accommodate siginfo_t considerations. * thread.cc (pthread_kill): Ditto. * sigproc.h (sigpacket): Move here. (sigpacket::process): Declare "new" function. (sig_handle): Eliminate declaration. (sig_send): Declare with new paramaters. (killsys): Declare new function. (kill_pgrp): Declare. * winsup.h: Move some signal-specific stuff to sigproc.h. * include/cygwin/signal.h: Tweak some siginfo_t stuff.
2004-01-19 13:46:54 +08:00
si.si_signo = SIGILL;
si.si_code = ILL_PRVOPC;
* cygwin/include/signal.h: Add copyright notice. * cygwin.din: Make clock SIGFE. Add clock_gettime, sigwaitinfo, timer_create, timer_delete, timer_settime. * include/cygwin/version.h: Reflect above additions. * fork.cc (fork_child): Call fixup_timers_after_fork. * signal.cc (sigwait): Remove unused variable. * timer.cc: New file. (clock_gettime): Define new function. (timer_tracker): Define new struct used by timer functions. (timer_tracker::timer_tracker): New function. (to_us): New function. (timer_thread): New function. (timer_tracker::settime): New function. (timer_create): New function. (timer_settime): New function. (timer_delete): New function. (fixup_timers_after_fork): New function. * cygthread.cc: Bump thread count. * signal.cc (sigwaitinfo): Define new function. (sigwait): Redefine based on sigwaitinfo. * include/cygwin/signal.h (sigwaitinfo): Declare. (sigwait): Ditto. * dtable.cc (dtable::vfork_parent_restore): Avoid double close of ctty when ctty == ctty_on_hold. * cygtls.h (_threadinfo::threadkill): New element. (_threadinfo::set_threadkill): Declare new function. (_threadinfo::reset_threadkill): Declare new function. * dcrt0.cc (dcrt0_1): Call here so that it will be possible to attach to running process with #(*& Windows Me/9x. (initial_env): Try to initialize strace if uninitialized. * gendef: Don't zero signal if threadkill is set since that will happen in the called function. * signal.cc (sigwait): Ensure cleanup in error conditions. * sigproc.cc (sig_send): Clear packet mask storage. (wait_subproc): Fill in child exit code in siginfo_t structure. * thread.cc (pthread_kill): Set threadkill flag. * tlsoffsets.h: Regenerate. Throughout, use siginfo_t to fill out all signal information for "kernel" signals. * cygtls.h (_threadinfo::set_siginfo): Declare new function. * cygtls.cc (_threadinfo::set_siginfo): Define new function. * dcrt0.cc (do_exit): Accommodate siginfo_t considerations. * exceptions.cc (handle_exceptions): Ditto. (sig_handle_tty_stop): Ditto. (ctrl_c_handler): Use killsys() to send signal. (sigpacket::process): Rename from sig_handle. Use siginfo_t field from sigpacket for everything. (tty_min::kill_pgrp): Accommodate siginfo_t considerations. (fhandler_termios::bg_check): Ditto. * fhandler_tty.cc (fhandler_tty_slave::ioctl): Use killsys() to send signal. * signal.cc (kill_worker): Rewrite to use siginfo_t second argument. (kill_pgrp): Ditto. (kill0): Define new function pulled from kill(). (kill): Rewrite as frontend to kill0. (killsys): Define new function. * sigproc.cc (sigelem): Eliminate. (sigpacket): Move to sigproc.h. Subsume sigelem. (pending_signals): Use sigpacket rather than sigelem for everything. (sig_clear): Ditto. (wait_sig): Ditto. (sig_send): Rewrite to use siginfo_t argument. (sig_send): New function wratpper to sig_send with siginfo_t argument. (wait_subproc): Accommodate siginfo_t considerations. * thread.cc (pthread_kill): Ditto. * sigproc.h (sigpacket): Move here. (sigpacket::process): Declare "new" function. (sig_handle): Eliminate declaration. (sig_send): Declare with new paramaters. (killsys): Declare new function. (kill_pgrp): Declare. * winsup.h: Move some signal-specific stuff to sigproc.h. * include/cygwin/signal.h: Tweak some siginfo_t stuff.
2004-01-19 13:46:54 +08:00
break;
2000-02-18 03:38:33 +08:00
case STATUS_NONCONTINUABLE_EXCEPTION:
* cygwin/include/signal.h: Add copyright notice. * cygwin.din: Make clock SIGFE. Add clock_gettime, sigwaitinfo, timer_create, timer_delete, timer_settime. * include/cygwin/version.h: Reflect above additions. * fork.cc (fork_child): Call fixup_timers_after_fork. * signal.cc (sigwait): Remove unused variable. * timer.cc: New file. (clock_gettime): Define new function. (timer_tracker): Define new struct used by timer functions. (timer_tracker::timer_tracker): New function. (to_us): New function. (timer_thread): New function. (timer_tracker::settime): New function. (timer_create): New function. (timer_settime): New function. (timer_delete): New function. (fixup_timers_after_fork): New function. * cygthread.cc: Bump thread count. * signal.cc (sigwaitinfo): Define new function. (sigwait): Redefine based on sigwaitinfo. * include/cygwin/signal.h (sigwaitinfo): Declare. (sigwait): Ditto. * dtable.cc (dtable::vfork_parent_restore): Avoid double close of ctty when ctty == ctty_on_hold. * cygtls.h (_threadinfo::threadkill): New element. (_threadinfo::set_threadkill): Declare new function. (_threadinfo::reset_threadkill): Declare new function. * dcrt0.cc (dcrt0_1): Call here so that it will be possible to attach to running process with #(*& Windows Me/9x. (initial_env): Try to initialize strace if uninitialized. * gendef: Don't zero signal if threadkill is set since that will happen in the called function. * signal.cc (sigwait): Ensure cleanup in error conditions. * sigproc.cc (sig_send): Clear packet mask storage. (wait_subproc): Fill in child exit code in siginfo_t structure. * thread.cc (pthread_kill): Set threadkill flag. * tlsoffsets.h: Regenerate. Throughout, use siginfo_t to fill out all signal information for "kernel" signals. * cygtls.h (_threadinfo::set_siginfo): Declare new function. * cygtls.cc (_threadinfo::set_siginfo): Define new function. * dcrt0.cc (do_exit): Accommodate siginfo_t considerations. * exceptions.cc (handle_exceptions): Ditto. (sig_handle_tty_stop): Ditto. (ctrl_c_handler): Use killsys() to send signal. (sigpacket::process): Rename from sig_handle. Use siginfo_t field from sigpacket for everything. (tty_min::kill_pgrp): Accommodate siginfo_t considerations. (fhandler_termios::bg_check): Ditto. * fhandler_tty.cc (fhandler_tty_slave::ioctl): Use killsys() to send signal. * signal.cc (kill_worker): Rewrite to use siginfo_t second argument. (kill_pgrp): Ditto. (kill0): Define new function pulled from kill(). (kill): Rewrite as frontend to kill0. (killsys): Define new function. * sigproc.cc (sigelem): Eliminate. (sigpacket): Move to sigproc.h. Subsume sigelem. (pending_signals): Use sigpacket rather than sigelem for everything. (sig_clear): Ditto. (wait_sig): Ditto. (sig_send): Rewrite to use siginfo_t argument. (sig_send): New function wratpper to sig_send with siginfo_t argument. (wait_subproc): Accommodate siginfo_t considerations. * thread.cc (pthread_kill): Ditto. * sigproc.h (sigpacket): Move here. (sigpacket::process): Declare "new" function. (sig_handle): Eliminate declaration. (sig_send): Declare with new paramaters. (killsys): Declare new function. (kill_pgrp): Declare. * winsup.h: Move some signal-specific stuff to sigproc.h. * include/cygwin/signal.h: Tweak some siginfo_t stuff.
2004-01-19 13:46:54 +08:00
si.si_signo = SIGILL;
si.si_code = ILL_ILLADR;
2000-02-18 03:38:33 +08:00
break;
case STATUS_TIMEOUT:
* cygwin/include/signal.h: Add copyright notice. * cygwin.din: Make clock SIGFE. Add clock_gettime, sigwaitinfo, timer_create, timer_delete, timer_settime. * include/cygwin/version.h: Reflect above additions. * fork.cc (fork_child): Call fixup_timers_after_fork. * signal.cc (sigwait): Remove unused variable. * timer.cc: New file. (clock_gettime): Define new function. (timer_tracker): Define new struct used by timer functions. (timer_tracker::timer_tracker): New function. (to_us): New function. (timer_thread): New function. (timer_tracker::settime): New function. (timer_create): New function. (timer_settime): New function. (timer_delete): New function. (fixup_timers_after_fork): New function. * cygthread.cc: Bump thread count. * signal.cc (sigwaitinfo): Define new function. (sigwait): Redefine based on sigwaitinfo. * include/cygwin/signal.h (sigwaitinfo): Declare. (sigwait): Ditto. * dtable.cc (dtable::vfork_parent_restore): Avoid double close of ctty when ctty == ctty_on_hold. * cygtls.h (_threadinfo::threadkill): New element. (_threadinfo::set_threadkill): Declare new function. (_threadinfo::reset_threadkill): Declare new function. * dcrt0.cc (dcrt0_1): Call here so that it will be possible to attach to running process with #(*& Windows Me/9x. (initial_env): Try to initialize strace if uninitialized. * gendef: Don't zero signal if threadkill is set since that will happen in the called function. * signal.cc (sigwait): Ensure cleanup in error conditions. * sigproc.cc (sig_send): Clear packet mask storage. (wait_subproc): Fill in child exit code in siginfo_t structure. * thread.cc (pthread_kill): Set threadkill flag. * tlsoffsets.h: Regenerate. Throughout, use siginfo_t to fill out all signal information for "kernel" signals. * cygtls.h (_threadinfo::set_siginfo): Declare new function. * cygtls.cc (_threadinfo::set_siginfo): Define new function. * dcrt0.cc (do_exit): Accommodate siginfo_t considerations. * exceptions.cc (handle_exceptions): Ditto. (sig_handle_tty_stop): Ditto. (ctrl_c_handler): Use killsys() to send signal. (sigpacket::process): Rename from sig_handle. Use siginfo_t field from sigpacket for everything. (tty_min::kill_pgrp): Accommodate siginfo_t considerations. (fhandler_termios::bg_check): Ditto. * fhandler_tty.cc (fhandler_tty_slave::ioctl): Use killsys() to send signal. * signal.cc (kill_worker): Rewrite to use siginfo_t second argument. (kill_pgrp): Ditto. (kill0): Define new function pulled from kill(). (kill): Rewrite as frontend to kill0. (killsys): Define new function. * sigproc.cc (sigelem): Eliminate. (sigpacket): Move to sigproc.h. Subsume sigelem. (pending_signals): Use sigpacket rather than sigelem for everything. (sig_clear): Ditto. (wait_sig): Ditto. (sig_send): Rewrite to use siginfo_t argument. (sig_send): New function wratpper to sig_send with siginfo_t argument. (wait_subproc): Accommodate siginfo_t considerations. * thread.cc (pthread_kill): Ditto. * sigproc.h (sigpacket): Move here. (sigpacket::process): Declare "new" function. (sig_handle): Eliminate declaration. (sig_send): Declare with new paramaters. (killsys): Declare new function. (kill_pgrp): Declare. * winsup.h: Move some signal-specific stuff to sigproc.h. * include/cygwin/signal.h: Tweak some siginfo_t stuff.
2004-01-19 13:46:54 +08:00
si.si_signo = SIGALRM;
2000-02-18 03:38:33 +08:00
break;
case STATUS_GUARD_PAGE_VIOLATION:
si.si_signo = SIGBUS;
si.si_code = BUS_OBJERR;
break;
case STATUS_DATATYPE_MISALIGNMENT:
si.si_signo = SIGBUS;
si.si_code = BUS_ADRALN;
break;
2000-02-18 03:38:33 +08:00
case STATUS_ACCESS_VIOLATION:
2006-07-25 Corinna Vinschen <corinna@vinschen.de> * include/cygwin/version.h: Bump DLL version to 1.7.0. 2006-07-25 Corinna Vinschen <corinna@vinschen.de> * select.h: Remove. * fhandler_socket.cc: Don't include select.h. * select.cc: Ditto. 2006-07-25 Corinna Vinschen <corinna@vinschen.de> * cygtls.h: Drop socket related includes. (struct _local_storage): Remove exitsock and exitsock_sin. Add select_sockevt. * cygtls.cc: Accomodate above change throughout. * fhandler.h (class fhandler_socket): Make wsock_evt public. * fhandler_socket.cc (fhandler_socket::fhandler_socket): Accomodate reordering members. (fhandler_socket::evaluate_events): Drop FD_CONNECT event as soon as it gets read once. Never remove FD_WRITE event here. (fhandler_socket::wait_for_events): Wait 50 ms instead of INFINITE for socket events. (fhandler_socket::accept): Fix conditional. Set wsock_events members of accepted socket to useful start values. (fhandler_socket::recv_internal): Always drop FD_READ/FD_OOB events from wsock_events after the call to WSARecvFrom. (fhandler_socket::send_internal): Drop FD_WRITE event from wsock_events if the call to WSASendTo fails with WSAEWOULDBLOCK. Fix return value condition. * select.cc (struct socketinf): Change to accomodate using socket event handling. (peek_socket): Use event handling for peeking socket. (thread_socket): Ditto. (start_thread_socket): Ditto. (socket_cleanup): Same here. * tlsoffsets.h: Regenerate. 2006-07-20 Corinna Vinschen <corinna@vinschen.de> * fhandler.h (class fhandler_socket): Rearrange slightly to keep event handling methods and members together. Drop owner status flag. Split wait method. Rename event handling methods for readability. * fhandler_socket.cc (struct wsa_event): Add owner field. (LOCK_EVENTS): New macro. (UNLOCK_EVENTS): Ditto. (fhandler_socket::init_events): rename from prepare. (fhandler_socket::evaluate_events): First half of former wait method. Do everything but wait. Allow specifiying whether or not events from event_mask should be erased from wsock_events->events. Simplify OOB handling. Allow sending SIGURG to any process (group). (fhandler_socket::wait_for_events): Second half of former wait method. Call evaluate_events and wait in a loop if socket is blocking. (fhandler_socket::release_events): Rename from release. (fhandler_socket::connect): Accomodate above name changes. (fhandler_socket::accept): Ditto. (fhandler_socket::recv_internal): Ditto. (fhandler_socket::send_internal): Ditto. (fhandler_socket::close): Ditto. (fhandler_socket::fcntl): Always set owner to given input value on F_SETOWN. Handle F_GETOWN. * net.cc (fdsock): Accomodate above name changes. 2006-07-20 Corinna Vinschen <corinna@vinschen.de> * fhandler_socket.cc (fhandler_socket::wait): Set Winsock errno to WSAEWOULDBLOCK instead of WSAEINPROGRESS. 2006-07-18 Brian Ford <Brian.Ford@FlightSafety.com> Corinna Vinschen <corinna@vinschen.de> * winsup.h (mmap_region_status): New enum. (mmap_is_attached_or_noreserve_page): Adjust prototype and rename as below. * mmap.cc (mmap_is_attached_or_noreserve_page): Rename mmap_is_attached_or_noreserve. Add region length parameter. Return enum above. * exceptions.cc (_cygtls::handle_exceptions): Accomodate above. * fhandler.cc (fhandler_base::raw_read): Call above for NOACCESS errors and retry on success to allow reads into untouched MAP_NORESERVE buffers. 2006-07-18 Corinna Vinschen <corinna@vinschen.de> * cygwin.din (posix_openpt): Export. * tty.cc (posix_openpt): New function. * include/cygwin/stdlib.h (posix_openpt): Declare. * include/cygwin/version.h: Bump API minor number. 2006-07-14 Corinna Vinschen <corinna@vinschen.de> * security.cc (get_token_group_sidlist): Always add the interactive group to the token. Add comment. Create logon_id group SID by copying it from incoming group list. (create_token): Add subauth_token parameter. Use information in subauth_token if present. Tweak SourceIdentifier if subauth_token is present for debugging purposes. * security.h (create_token): Add subauth_token parameter in declaration. * syscalls.cc (seteuid32): Call subauth first. Call create_token regardless. Use subauth token in call to create_token if subauth succeeded. 2006-07-13 Corinna Vinschen <corinna@vinschen.de> * include/netinet/in.h: Update copyright. 2006-07-13 Corinna Vinschen <corinna@vinschen.de> * fhandler_socket.cc (fhandler_socket::wait): Rework function so that WaitForMultipleObjects is really only called when necessary. 2006-07-12 Corinna Vinschen <corinna@vinschen.de> * include/netdb.h: Declare rcmd, rcmd_af, rexec, rresvport, rresvport_af, iruserok, iruserok_sa, ruserok. 2006-07-12 Corinna Vinschen <corinna@vinschen.de> * Makefile.in (DLL_OFILES): Drop iruserok.o. Add rcmd.o. * autoload.cc (rcmd): Drop definition. * cygwin.din: Export bindresvport, bindresvport_sa, iruserok_sa, rcmd_af, rresvport_af. * net.cc (cygwin_rcmd): Remove. (last_used_bindresvport): Rename from last_used_rrecvport. (cygwin_bindresvport_sa): New function implementing bindresvport_sa. (cygwin_bindresvport): New function implementing bindresvport. (cygwin_rresvport): Remove. * include/cygwin/version.h: Bump API minor number. * include/netinet/in.h: Declare bindresvport and bindresvport_sa. * libc/iruserok.c: Remove file. * libc/rcmd.cc: New file implementing rcmd, rcmd_af, rresvport, rresvport_af, iruserok_sa, iruserok and ruserok. 2006-07-12 Corinna Vinschen <corinna@vinschen.de> * fhandler_socket.cc (fhandler_socket::getsockname): Return valid result for unbound sockets. 2006-07-11 Corinna Vinschen <corinna@vinschen.de> * fhandler_socket.cc (fhandler_socket::fixup_after_fork): Handle wsock_mtx and wsock_evt on fork, thus handling close_on_exec correctly. (fhandler_socket::fixup_after_exec): Drop misguided attempt to handle close_on_exec here. (fhandler_socket::dup): Call fixup_after_fork with NULL parent. Add comment. (fhandler_socket::set_close_on_exec): Handle wsock_mtx and wsock_evt. 2006-07-10 Corinna Vinschen <corinna@vinschen.de> * fhandler.h (class fhandler_socket): Add wsock_mtx, wsock_evt and wsock_events members. Remove closed status flag, add listener status flag. Accomodate new implementation of socket event handling methods. Declare recv* and send* functions ssize_t as the POSIX equivalents. (fhandler_socket::recv_internal): Declare. (fhandler_socket::send_internal): Ditto. * fhandler_socket.cc (EVENT_MASK): Define mask of selected events. (fhandler_socket::fhandler_socket): Initialize new members. (fhandler_socket::af_local_setblocking): Don't actually set the socket to blocking mode. Keep sane event selection. (fhandler_socket::af_local_unsetblocking): Don't actually set the socket to previous blocking setting, just remember it. (struct wsa_event): New structure to keep event data per shared socket. (NUM_SOCKS): Define number of shared sockets concurrently handled by all active Cygwin processes. (wsa_events): New shared datastructure keeping all wsa_event records. (socket_serial_number): New shared variable to identify shared sockets. (wsa_slot_mtx): Global mutex to serialize wsa_events access. (search_wsa_event_slot): New static function to select a new wsa_event slot for a new socket. (fhandler_socket::prepare): Rewrite. Prepare event selection per new socket. (fhandler_socket::wait): Rewrite. Wait for socket events in thread safe and multiple process safe. (fhandler_socket::release): Rewrite. Close per-socket descriptor mutex handle and event handle. (fhandler_socket::dup): Duplicate wsock_mtx and wsock_evt. Fix copy-paste error in debug output. (fhandler_socket::connect): Accomodate new event handling. (fhandler_socket::listen): Set listener flag on successful listen. (fhandler_socket::accept): Accomodate new event handling. (fhandler_socket::recv_internal): New inline method centralizing common recv code. (fhandler_socket::recvfrom): Call recv_internal now. (fhandler_socket::recvmsg): Ditto. Streamline copying from iovec to WSABUF. (fhandler_socket::send_internal): New inline method centralizing common send code. (fhandler_socket::sendto): Call send_internal now. (fhandler_socket::sendmsg): Ditto. Streamline copying from iovec to WSABUF. (fhandler_socket::close): Call release now. (fhandler_socket::ioctl): Never actually switch to blocking mode. Just keep track of the setting. * net.cc (fdsock): Call prepare now. (cygwin_connect): Revert again to event driven technique. (cygwin_accept): Ditto. * poll.cc (poll): Don't call recvfrom on a listening socket. Remove special case for failing recvfrom. * include/sys/socket.h: Declare recv* and send* functions ssize_t as requested by POSIX. 2006-07-07 Corinna Vinschen <corinna@vinschen.de> * net.cc (cygwin_inet_ntop): Fix data type of forth parameter. 2006-07-06 Corinna Vinschen <corinna@vinschen.de> * include/cygwin/in6.h (struct in6_addr): Fix typo. 2006-07-06 Corinna Vinschen <corinna@vinschen.de> * cygwin.din: Export in6addr_any, in6addr_loopback, freeaddrinfo, gai_strerror, getaddrinfo, getnameinfo. * fhandler_socket.cc: Include cygwin/in6.h. (get_inet_addr): Accomodate AF_INET6 usage. (fhandler_socket::connect): Ditto. (fhandler_socket::listen): Ditto. (fhandler_socket::sendto): Ditto. * net.cc: Include cygwin/in6.h. (in6addr_any): Define. (in6addr_loopback): Define. (cygwin_socket): Accomodate AF_INET6 usage. (socketpair): Bind socketpairs only to loopback for security. (inet_pton4): New static function. (inet_pton6): Ditto. (cygwin_inet_pton): New AF_INET6 aware inet_pton implementation. (inet_ntop4): New static function. (inet_ntop6): Ditto. (cygwin_inet_ntop): New AF_INET6 aware inet_ntop implementation. (ga_aistruct): New static function. (ga_clone): Ditto. (ga_echeck): Ditto. (ga_nsearch): Ditto. (ga_port): Ditto. (ga_serv): Ditto. (ga_unix): Ditto. (gn_ipv46): Ditto. (ipv4_freeaddrinfo): Ditto. (ipv4_getaddrinfo): Ditto. (ipv4_getnameinfo): Ditto. (gai_errmap_t): New structure holding error code - error string mapping. (cygwin_gai_strerror): New function implementing gai_strerror. (w32_to_gai_err): New static function. (get_ipv6_funcs): Ditto. (load_ipv6_funcs): Ditto. (cygwin_freeaddrinfo): New function implementing freeaddrinfo. (cygwin_getaddrinfo): New function implementing getaddrinfo. (cygwin_getnameinfo): New function implementing getnameinfo. * include/netdb.h: Include stdint.h and cygwin/socket.h. Define data types and macros used by getaddrinfo and friends. Declare freeaddrinfo, gai_strerror, getaddrinfo and getnameinfo. * include/cygwin/in.h: Add IPv6 related IPPROTOs. Remove definition of struct sockaddr_in6. Include cygwin/in6.h instead. * include/cygwin/in6.h: New header file defining IPv6 releated data types and macros. * include/cygwin/socket.h: Enable AF_INET6 and PF_INET6. Add IPv6 related socket options. * include/cygwin/version.h: Bump API minor number. 2006-07-06 Corinna Vinschen <corinna@vinschen.de> * autoload.cc (DsGetDcNameA): Define. (NetGetAnyDCName): Define. * security.cc: Include dsgetdc.h. (DsGetDcNameA): Declare. (DS_FORCE_REDISCOVERY): Define. (get_logon_server): Add bool parameter to control rediscovery of DC. Use DsGetDcNameA function if supported, NetGetDCName/NetGetAnyDCName otherwise. (get_server_groups): Rediscover DC if get_user_groups fails and try again. (get_reg_security): Use correct error code macro when testing RegGetKeySecurity return value. * security.h (get_logon_server): Remove default vaue from wserver parameter. Add rediscovery parameter. * uinfo.cc (cygheap_user::env_logsrv): Accomodate rediscovery parameter in call to get_logon_server.
2006-07-26 03:23:23 +08:00
switch (mmap_is_attached_or_noreserve ((void *)e->ExceptionInformation[1],
1))
{
2006-07-25 Corinna Vinschen <corinna@vinschen.de> * include/cygwin/version.h: Bump DLL version to 1.7.0. 2006-07-25 Corinna Vinschen <corinna@vinschen.de> * select.h: Remove. * fhandler_socket.cc: Don't include select.h. * select.cc: Ditto. 2006-07-25 Corinna Vinschen <corinna@vinschen.de> * cygtls.h: Drop socket related includes. (struct _local_storage): Remove exitsock and exitsock_sin. Add select_sockevt. * cygtls.cc: Accomodate above change throughout. * fhandler.h (class fhandler_socket): Make wsock_evt public. * fhandler_socket.cc (fhandler_socket::fhandler_socket): Accomodate reordering members. (fhandler_socket::evaluate_events): Drop FD_CONNECT event as soon as it gets read once. Never remove FD_WRITE event here. (fhandler_socket::wait_for_events): Wait 50 ms instead of INFINITE for socket events. (fhandler_socket::accept): Fix conditional. Set wsock_events members of accepted socket to useful start values. (fhandler_socket::recv_internal): Always drop FD_READ/FD_OOB events from wsock_events after the call to WSARecvFrom. (fhandler_socket::send_internal): Drop FD_WRITE event from wsock_events if the call to WSASendTo fails with WSAEWOULDBLOCK. Fix return value condition. * select.cc (struct socketinf): Change to accomodate using socket event handling. (peek_socket): Use event handling for peeking socket. (thread_socket): Ditto. (start_thread_socket): Ditto. (socket_cleanup): Same here. * tlsoffsets.h: Regenerate. 2006-07-20 Corinna Vinschen <corinna@vinschen.de> * fhandler.h (class fhandler_socket): Rearrange slightly to keep event handling methods and members together. Drop owner status flag. Split wait method. Rename event handling methods for readability. * fhandler_socket.cc (struct wsa_event): Add owner field. (LOCK_EVENTS): New macro. (UNLOCK_EVENTS): Ditto. (fhandler_socket::init_events): rename from prepare. (fhandler_socket::evaluate_events): First half of former wait method. Do everything but wait. Allow specifiying whether or not events from event_mask should be erased from wsock_events->events. Simplify OOB handling. Allow sending SIGURG to any process (group). (fhandler_socket::wait_for_events): Second half of former wait method. Call evaluate_events and wait in a loop if socket is blocking. (fhandler_socket::release_events): Rename from release. (fhandler_socket::connect): Accomodate above name changes. (fhandler_socket::accept): Ditto. (fhandler_socket::recv_internal): Ditto. (fhandler_socket::send_internal): Ditto. (fhandler_socket::close): Ditto. (fhandler_socket::fcntl): Always set owner to given input value on F_SETOWN. Handle F_GETOWN. * net.cc (fdsock): Accomodate above name changes. 2006-07-20 Corinna Vinschen <corinna@vinschen.de> * fhandler_socket.cc (fhandler_socket::wait): Set Winsock errno to WSAEWOULDBLOCK instead of WSAEINPROGRESS. 2006-07-18 Brian Ford <Brian.Ford@FlightSafety.com> Corinna Vinschen <corinna@vinschen.de> * winsup.h (mmap_region_status): New enum. (mmap_is_attached_or_noreserve_page): Adjust prototype and rename as below. * mmap.cc (mmap_is_attached_or_noreserve_page): Rename mmap_is_attached_or_noreserve. Add region length parameter. Return enum above. * exceptions.cc (_cygtls::handle_exceptions): Accomodate above. * fhandler.cc (fhandler_base::raw_read): Call above for NOACCESS errors and retry on success to allow reads into untouched MAP_NORESERVE buffers. 2006-07-18 Corinna Vinschen <corinna@vinschen.de> * cygwin.din (posix_openpt): Export. * tty.cc (posix_openpt): New function. * include/cygwin/stdlib.h (posix_openpt): Declare. * include/cygwin/version.h: Bump API minor number. 2006-07-14 Corinna Vinschen <corinna@vinschen.de> * security.cc (get_token_group_sidlist): Always add the interactive group to the token. Add comment. Create logon_id group SID by copying it from incoming group list. (create_token): Add subauth_token parameter. Use information in subauth_token if present. Tweak SourceIdentifier if subauth_token is present for debugging purposes. * security.h (create_token): Add subauth_token parameter in declaration. * syscalls.cc (seteuid32): Call subauth first. Call create_token regardless. Use subauth token in call to create_token if subauth succeeded. 2006-07-13 Corinna Vinschen <corinna@vinschen.de> * include/netinet/in.h: Update copyright. 2006-07-13 Corinna Vinschen <corinna@vinschen.de> * fhandler_socket.cc (fhandler_socket::wait): Rework function so that WaitForMultipleObjects is really only called when necessary. 2006-07-12 Corinna Vinschen <corinna@vinschen.de> * include/netdb.h: Declare rcmd, rcmd_af, rexec, rresvport, rresvport_af, iruserok, iruserok_sa, ruserok. 2006-07-12 Corinna Vinschen <corinna@vinschen.de> * Makefile.in (DLL_OFILES): Drop iruserok.o. Add rcmd.o. * autoload.cc (rcmd): Drop definition. * cygwin.din: Export bindresvport, bindresvport_sa, iruserok_sa, rcmd_af, rresvport_af. * net.cc (cygwin_rcmd): Remove. (last_used_bindresvport): Rename from last_used_rrecvport. (cygwin_bindresvport_sa): New function implementing bindresvport_sa. (cygwin_bindresvport): New function implementing bindresvport. (cygwin_rresvport): Remove. * include/cygwin/version.h: Bump API minor number. * include/netinet/in.h: Declare bindresvport and bindresvport_sa. * libc/iruserok.c: Remove file. * libc/rcmd.cc: New file implementing rcmd, rcmd_af, rresvport, rresvport_af, iruserok_sa, iruserok and ruserok. 2006-07-12 Corinna Vinschen <corinna@vinschen.de> * fhandler_socket.cc (fhandler_socket::getsockname): Return valid result for unbound sockets. 2006-07-11 Corinna Vinschen <corinna@vinschen.de> * fhandler_socket.cc (fhandler_socket::fixup_after_fork): Handle wsock_mtx and wsock_evt on fork, thus handling close_on_exec correctly. (fhandler_socket::fixup_after_exec): Drop misguided attempt to handle close_on_exec here. (fhandler_socket::dup): Call fixup_after_fork with NULL parent. Add comment. (fhandler_socket::set_close_on_exec): Handle wsock_mtx and wsock_evt. 2006-07-10 Corinna Vinschen <corinna@vinschen.de> * fhandler.h (class fhandler_socket): Add wsock_mtx, wsock_evt and wsock_events members. Remove closed status flag, add listener status flag. Accomodate new implementation of socket event handling methods. Declare recv* and send* functions ssize_t as the POSIX equivalents. (fhandler_socket::recv_internal): Declare. (fhandler_socket::send_internal): Ditto. * fhandler_socket.cc (EVENT_MASK): Define mask of selected events. (fhandler_socket::fhandler_socket): Initialize new members. (fhandler_socket::af_local_setblocking): Don't actually set the socket to blocking mode. Keep sane event selection. (fhandler_socket::af_local_unsetblocking): Don't actually set the socket to previous blocking setting, just remember it. (struct wsa_event): New structure to keep event data per shared socket. (NUM_SOCKS): Define number of shared sockets concurrently handled by all active Cygwin processes. (wsa_events): New shared datastructure keeping all wsa_event records. (socket_serial_number): New shared variable to identify shared sockets. (wsa_slot_mtx): Global mutex to serialize wsa_events access. (search_wsa_event_slot): New static function to select a new wsa_event slot for a new socket. (fhandler_socket::prepare): Rewrite. Prepare event selection per new socket. (fhandler_socket::wait): Rewrite. Wait for socket events in thread safe and multiple process safe. (fhandler_socket::release): Rewrite. Close per-socket descriptor mutex handle and event handle. (fhandler_socket::dup): Duplicate wsock_mtx and wsock_evt. Fix copy-paste error in debug output. (fhandler_socket::connect): Accomodate new event handling. (fhandler_socket::listen): Set listener flag on successful listen. (fhandler_socket::accept): Accomodate new event handling. (fhandler_socket::recv_internal): New inline method centralizing common recv code. (fhandler_socket::recvfrom): Call recv_internal now. (fhandler_socket::recvmsg): Ditto. Streamline copying from iovec to WSABUF. (fhandler_socket::send_internal): New inline method centralizing common send code. (fhandler_socket::sendto): Call send_internal now. (fhandler_socket::sendmsg): Ditto. Streamline copying from iovec to WSABUF. (fhandler_socket::close): Call release now. (fhandler_socket::ioctl): Never actually switch to blocking mode. Just keep track of the setting. * net.cc (fdsock): Call prepare now. (cygwin_connect): Revert again to event driven technique. (cygwin_accept): Ditto. * poll.cc (poll): Don't call recvfrom on a listening socket. Remove special case for failing recvfrom. * include/sys/socket.h: Declare recv* and send* functions ssize_t as requested by POSIX. 2006-07-07 Corinna Vinschen <corinna@vinschen.de> * net.cc (cygwin_inet_ntop): Fix data type of forth parameter. 2006-07-06 Corinna Vinschen <corinna@vinschen.de> * include/cygwin/in6.h (struct in6_addr): Fix typo. 2006-07-06 Corinna Vinschen <corinna@vinschen.de> * cygwin.din: Export in6addr_any, in6addr_loopback, freeaddrinfo, gai_strerror, getaddrinfo, getnameinfo. * fhandler_socket.cc: Include cygwin/in6.h. (get_inet_addr): Accomodate AF_INET6 usage. (fhandler_socket::connect): Ditto. (fhandler_socket::listen): Ditto. (fhandler_socket::sendto): Ditto. * net.cc: Include cygwin/in6.h. (in6addr_any): Define. (in6addr_loopback): Define. (cygwin_socket): Accomodate AF_INET6 usage. (socketpair): Bind socketpairs only to loopback for security. (inet_pton4): New static function. (inet_pton6): Ditto. (cygwin_inet_pton): New AF_INET6 aware inet_pton implementation. (inet_ntop4): New static function. (inet_ntop6): Ditto. (cygwin_inet_ntop): New AF_INET6 aware inet_ntop implementation. (ga_aistruct): New static function. (ga_clone): Ditto. (ga_echeck): Ditto. (ga_nsearch): Ditto. (ga_port): Ditto. (ga_serv): Ditto. (ga_unix): Ditto. (gn_ipv46): Ditto. (ipv4_freeaddrinfo): Ditto. (ipv4_getaddrinfo): Ditto. (ipv4_getnameinfo): Ditto. (gai_errmap_t): New structure holding error code - error string mapping. (cygwin_gai_strerror): New function implementing gai_strerror. (w32_to_gai_err): New static function. (get_ipv6_funcs): Ditto. (load_ipv6_funcs): Ditto. (cygwin_freeaddrinfo): New function implementing freeaddrinfo. (cygwin_getaddrinfo): New function implementing getaddrinfo. (cygwin_getnameinfo): New function implementing getnameinfo. * include/netdb.h: Include stdint.h and cygwin/socket.h. Define data types and macros used by getaddrinfo and friends. Declare freeaddrinfo, gai_strerror, getaddrinfo and getnameinfo. * include/cygwin/in.h: Add IPv6 related IPPROTOs. Remove definition of struct sockaddr_in6. Include cygwin/in6.h instead. * include/cygwin/in6.h: New header file defining IPv6 releated data types and macros. * include/cygwin/socket.h: Enable AF_INET6 and PF_INET6. Add IPv6 related socket options. * include/cygwin/version.h: Bump API minor number. 2006-07-06 Corinna Vinschen <corinna@vinschen.de> * autoload.cc (DsGetDcNameA): Define. (NetGetAnyDCName): Define. * security.cc: Include dsgetdc.h. (DsGetDcNameA): Declare. (DS_FORCE_REDISCOVERY): Define. (get_logon_server): Add bool parameter to control rediscovery of DC. Use DsGetDcNameA function if supported, NetGetDCName/NetGetAnyDCName otherwise. (get_server_groups): Rediscover DC if get_user_groups fails and try again. (get_reg_security): Use correct error code macro when testing RegGetKeySecurity return value. * security.h (get_logon_server): Remove default vaue from wserver parameter. Add rediscovery parameter. * uinfo.cc (cygheap_user::env_logsrv): Accomodate rediscovery parameter in call to get_logon_server.
2006-07-26 03:23:23 +08:00
case MMAP_NORESERVE_COMMITED:
return ExceptionContinueExecution;
2006-07-25 Corinna Vinschen <corinna@vinschen.de> * include/cygwin/version.h: Bump DLL version to 1.7.0. 2006-07-25 Corinna Vinschen <corinna@vinschen.de> * select.h: Remove. * fhandler_socket.cc: Don't include select.h. * select.cc: Ditto. 2006-07-25 Corinna Vinschen <corinna@vinschen.de> * cygtls.h: Drop socket related includes. (struct _local_storage): Remove exitsock and exitsock_sin. Add select_sockevt. * cygtls.cc: Accomodate above change throughout. * fhandler.h (class fhandler_socket): Make wsock_evt public. * fhandler_socket.cc (fhandler_socket::fhandler_socket): Accomodate reordering members. (fhandler_socket::evaluate_events): Drop FD_CONNECT event as soon as it gets read once. Never remove FD_WRITE event here. (fhandler_socket::wait_for_events): Wait 50 ms instead of INFINITE for socket events. (fhandler_socket::accept): Fix conditional. Set wsock_events members of accepted socket to useful start values. (fhandler_socket::recv_internal): Always drop FD_READ/FD_OOB events from wsock_events after the call to WSARecvFrom. (fhandler_socket::send_internal): Drop FD_WRITE event from wsock_events if the call to WSASendTo fails with WSAEWOULDBLOCK. Fix return value condition. * select.cc (struct socketinf): Change to accomodate using socket event handling. (peek_socket): Use event handling for peeking socket. (thread_socket): Ditto. (start_thread_socket): Ditto. (socket_cleanup): Same here. * tlsoffsets.h: Regenerate. 2006-07-20 Corinna Vinschen <corinna@vinschen.de> * fhandler.h (class fhandler_socket): Rearrange slightly to keep event handling methods and members together. Drop owner status flag. Split wait method. Rename event handling methods for readability. * fhandler_socket.cc (struct wsa_event): Add owner field. (LOCK_EVENTS): New macro. (UNLOCK_EVENTS): Ditto. (fhandler_socket::init_events): rename from prepare. (fhandler_socket::evaluate_events): First half of former wait method. Do everything but wait. Allow specifiying whether or not events from event_mask should be erased from wsock_events->events. Simplify OOB handling. Allow sending SIGURG to any process (group). (fhandler_socket::wait_for_events): Second half of former wait method. Call evaluate_events and wait in a loop if socket is blocking. (fhandler_socket::release_events): Rename from release. (fhandler_socket::connect): Accomodate above name changes. (fhandler_socket::accept): Ditto. (fhandler_socket::recv_internal): Ditto. (fhandler_socket::send_internal): Ditto. (fhandler_socket::close): Ditto. (fhandler_socket::fcntl): Always set owner to given input value on F_SETOWN. Handle F_GETOWN. * net.cc (fdsock): Accomodate above name changes. 2006-07-20 Corinna Vinschen <corinna@vinschen.de> * fhandler_socket.cc (fhandler_socket::wait): Set Winsock errno to WSAEWOULDBLOCK instead of WSAEINPROGRESS. 2006-07-18 Brian Ford <Brian.Ford@FlightSafety.com> Corinna Vinschen <corinna@vinschen.de> * winsup.h (mmap_region_status): New enum. (mmap_is_attached_or_noreserve_page): Adjust prototype and rename as below. * mmap.cc (mmap_is_attached_or_noreserve_page): Rename mmap_is_attached_or_noreserve. Add region length parameter. Return enum above. * exceptions.cc (_cygtls::handle_exceptions): Accomodate above. * fhandler.cc (fhandler_base::raw_read): Call above for NOACCESS errors and retry on success to allow reads into untouched MAP_NORESERVE buffers. 2006-07-18 Corinna Vinschen <corinna@vinschen.de> * cygwin.din (posix_openpt): Export. * tty.cc (posix_openpt): New function. * include/cygwin/stdlib.h (posix_openpt): Declare. * include/cygwin/version.h: Bump API minor number. 2006-07-14 Corinna Vinschen <corinna@vinschen.de> * security.cc (get_token_group_sidlist): Always add the interactive group to the token. Add comment. Create logon_id group SID by copying it from incoming group list. (create_token): Add subauth_token parameter. Use information in subauth_token if present. Tweak SourceIdentifier if subauth_token is present for debugging purposes. * security.h (create_token): Add subauth_token parameter in declaration. * syscalls.cc (seteuid32): Call subauth first. Call create_token regardless. Use subauth token in call to create_token if subauth succeeded. 2006-07-13 Corinna Vinschen <corinna@vinschen.de> * include/netinet/in.h: Update copyright. 2006-07-13 Corinna Vinschen <corinna@vinschen.de> * fhandler_socket.cc (fhandler_socket::wait): Rework function so that WaitForMultipleObjects is really only called when necessary. 2006-07-12 Corinna Vinschen <corinna@vinschen.de> * include/netdb.h: Declare rcmd, rcmd_af, rexec, rresvport, rresvport_af, iruserok, iruserok_sa, ruserok. 2006-07-12 Corinna Vinschen <corinna@vinschen.de> * Makefile.in (DLL_OFILES): Drop iruserok.o. Add rcmd.o. * autoload.cc (rcmd): Drop definition. * cygwin.din: Export bindresvport, bindresvport_sa, iruserok_sa, rcmd_af, rresvport_af. * net.cc (cygwin_rcmd): Remove. (last_used_bindresvport): Rename from last_used_rrecvport. (cygwin_bindresvport_sa): New function implementing bindresvport_sa. (cygwin_bindresvport): New function implementing bindresvport. (cygwin_rresvport): Remove. * include/cygwin/version.h: Bump API minor number. * include/netinet/in.h: Declare bindresvport and bindresvport_sa. * libc/iruserok.c: Remove file. * libc/rcmd.cc: New file implementing rcmd, rcmd_af, rresvport, rresvport_af, iruserok_sa, iruserok and ruserok. 2006-07-12 Corinna Vinschen <corinna@vinschen.de> * fhandler_socket.cc (fhandler_socket::getsockname): Return valid result for unbound sockets. 2006-07-11 Corinna Vinschen <corinna@vinschen.de> * fhandler_socket.cc (fhandler_socket::fixup_after_fork): Handle wsock_mtx and wsock_evt on fork, thus handling close_on_exec correctly. (fhandler_socket::fixup_after_exec): Drop misguided attempt to handle close_on_exec here. (fhandler_socket::dup): Call fixup_after_fork with NULL parent. Add comment. (fhandler_socket::set_close_on_exec): Handle wsock_mtx and wsock_evt. 2006-07-10 Corinna Vinschen <corinna@vinschen.de> * fhandler.h (class fhandler_socket): Add wsock_mtx, wsock_evt and wsock_events members. Remove closed status flag, add listener status flag. Accomodate new implementation of socket event handling methods. Declare recv* and send* functions ssize_t as the POSIX equivalents. (fhandler_socket::recv_internal): Declare. (fhandler_socket::send_internal): Ditto. * fhandler_socket.cc (EVENT_MASK): Define mask of selected events. (fhandler_socket::fhandler_socket): Initialize new members. (fhandler_socket::af_local_setblocking): Don't actually set the socket to blocking mode. Keep sane event selection. (fhandler_socket::af_local_unsetblocking): Don't actually set the socket to previous blocking setting, just remember it. (struct wsa_event): New structure to keep event data per shared socket. (NUM_SOCKS): Define number of shared sockets concurrently handled by all active Cygwin processes. (wsa_events): New shared datastructure keeping all wsa_event records. (socket_serial_number): New shared variable to identify shared sockets. (wsa_slot_mtx): Global mutex to serialize wsa_events access. (search_wsa_event_slot): New static function to select a new wsa_event slot for a new socket. (fhandler_socket::prepare): Rewrite. Prepare event selection per new socket. (fhandler_socket::wait): Rewrite. Wait for socket events in thread safe and multiple process safe. (fhandler_socket::release): Rewrite. Close per-socket descriptor mutex handle and event handle. (fhandler_socket::dup): Duplicate wsock_mtx and wsock_evt. Fix copy-paste error in debug output. (fhandler_socket::connect): Accomodate new event handling. (fhandler_socket::listen): Set listener flag on successful listen. (fhandler_socket::accept): Accomodate new event handling. (fhandler_socket::recv_internal): New inline method centralizing common recv code. (fhandler_socket::recvfrom): Call recv_internal now. (fhandler_socket::recvmsg): Ditto. Streamline copying from iovec to WSABUF. (fhandler_socket::send_internal): New inline method centralizing common send code. (fhandler_socket::sendto): Call send_internal now. (fhandler_socket::sendmsg): Ditto. Streamline copying from iovec to WSABUF. (fhandler_socket::close): Call release now. (fhandler_socket::ioctl): Never actually switch to blocking mode. Just keep track of the setting. * net.cc (fdsock): Call prepare now. (cygwin_connect): Revert again to event driven technique. (cygwin_accept): Ditto. * poll.cc (poll): Don't call recvfrom on a listening socket. Remove special case for failing recvfrom. * include/sys/socket.h: Declare recv* and send* functions ssize_t as requested by POSIX. 2006-07-07 Corinna Vinschen <corinna@vinschen.de> * net.cc (cygwin_inet_ntop): Fix data type of forth parameter. 2006-07-06 Corinna Vinschen <corinna@vinschen.de> * include/cygwin/in6.h (struct in6_addr): Fix typo. 2006-07-06 Corinna Vinschen <corinna@vinschen.de> * cygwin.din: Export in6addr_any, in6addr_loopback, freeaddrinfo, gai_strerror, getaddrinfo, getnameinfo. * fhandler_socket.cc: Include cygwin/in6.h. (get_inet_addr): Accomodate AF_INET6 usage. (fhandler_socket::connect): Ditto. (fhandler_socket::listen): Ditto. (fhandler_socket::sendto): Ditto. * net.cc: Include cygwin/in6.h. (in6addr_any): Define. (in6addr_loopback): Define. (cygwin_socket): Accomodate AF_INET6 usage. (socketpair): Bind socketpairs only to loopback for security. (inet_pton4): New static function. (inet_pton6): Ditto. (cygwin_inet_pton): New AF_INET6 aware inet_pton implementation. (inet_ntop4): New static function. (inet_ntop6): Ditto. (cygwin_inet_ntop): New AF_INET6 aware inet_ntop implementation. (ga_aistruct): New static function. (ga_clone): Ditto. (ga_echeck): Ditto. (ga_nsearch): Ditto. (ga_port): Ditto. (ga_serv): Ditto. (ga_unix): Ditto. (gn_ipv46): Ditto. (ipv4_freeaddrinfo): Ditto. (ipv4_getaddrinfo): Ditto. (ipv4_getnameinfo): Ditto. (gai_errmap_t): New structure holding error code - error string mapping. (cygwin_gai_strerror): New function implementing gai_strerror. (w32_to_gai_err): New static function. (get_ipv6_funcs): Ditto. (load_ipv6_funcs): Ditto. (cygwin_freeaddrinfo): New function implementing freeaddrinfo. (cygwin_getaddrinfo): New function implementing getaddrinfo. (cygwin_getnameinfo): New function implementing getnameinfo. * include/netdb.h: Include stdint.h and cygwin/socket.h. Define data types and macros used by getaddrinfo and friends. Declare freeaddrinfo, gai_strerror, getaddrinfo and getnameinfo. * include/cygwin/in.h: Add IPv6 related IPPROTOs. Remove definition of struct sockaddr_in6. Include cygwin/in6.h instead. * include/cygwin/in6.h: New header file defining IPv6 releated data types and macros. * include/cygwin/socket.h: Enable AF_INET6 and PF_INET6. Add IPv6 related socket options. * include/cygwin/version.h: Bump API minor number. 2006-07-06 Corinna Vinschen <corinna@vinschen.de> * autoload.cc (DsGetDcNameA): Define. (NetGetAnyDCName): Define. * security.cc: Include dsgetdc.h. (DsGetDcNameA): Declare. (DS_FORCE_REDISCOVERY): Define. (get_logon_server): Add bool parameter to control rediscovery of DC. Use DsGetDcNameA function if supported, NetGetDCName/NetGetAnyDCName otherwise. (get_server_groups): Rediscover DC if get_user_groups fails and try again. (get_reg_security): Use correct error code macro when testing RegGetKeySecurity return value. * security.h (get_logon_server): Remove default vaue from wserver parameter. Add rediscovery parameter. * uinfo.cc (cygheap_user::env_logsrv): Accomodate rediscovery parameter in call to get_logon_server.
2006-07-26 03:23:23 +08:00
case MMAP_RAISE_SIGBUS: /* MAP_NORESERVE page, commit failed, or
access to mmap page beyond EOF. */
* exceptions.cc (_cygtls::handle_exceptions): In case of a STATUS_ACCESS_VIOLATION, check if the page is a mmaped page beyond a file's EOF. Generate SIGBUS instead of SIGSEGV then. * mmap.cc (__PROT_ATTACH): New define. (__PROT_FILLER): Ditto. (fh_anonymous): Rename from fh_paging_file; (fh_disk_file): New global static variable. (attached): New inline function. (filler): Ditto. (gen_create_protect): Split off from gen_protect to use the file's access mode to create mapping always with maximum allowed protections. (gen_protect): Accomodate pages attached beyond EOF. Use symbolic values instead of numerics when possible. Drop create parameter. (gen_access): Use file's access mode instead of protection. (CreateMapping9x): Create named mapping names so that different creation access modes result in different mappings. (CreateMappingNT): Only reserve attached pages, don't commit them. (MapViewNT): Ditto. Set AT_ROUND_TO_PAGE for all non-NULL base addresses. (mmap_func_t): Define CreateMapping and MapView function pointers with additional openflags parameter. (class mmap_record): Add openflags member. (mmap_record::mmap_record): Add openflags parameter. (mmap_record::get_openflags): New accessor. (mmap_record::attached): Call global attached function. (mmap_record::filler): Call global filler function. (mmap_record::gen_create_protect): Call global gen_create_protect function. (mmap_record::gen_protect): Drop create parameter. (mmap_record::alloc_fh): Set fhandler's access flags. (list::search_record): Accomodate filler pages. (list::set): Use inode number as hash value. (map::get_list_by_fd): Check hash value against file's inode number. (mmap_is_attached_page): New function to evaluate if a given address is on a attached page. Called from _cygtls::handle_exceptions. (mmap_worker): New function to do mapping and bookkeeping in a single call. (mmap64): Use roundup2 to round length to pagesize alignment. Initialize global fhandlers. Simplify anonymous initialization. Add SUSv3 compatible check of file open mode vs. requested protection. Try creating new file handles to allow maximum page protection. Allow creating attached pages in case of mapping beyond EOF. Close new file handle if one has been created. (munmap): Align len to pagesize. (msync): Rework argument checks. Align len to pagesize. (mprotect): Ditto. Accomodate attached pages. (mlock): Use roundup/rounddown macros instead of homemade expressions. (munlock): Add page alignment as in mlock. (fhandler_dev_zero::munmap): Fix unmapping of non-private mappings. (fhandler_dev_zero::fixup_mmap_after_fork): Accomodate filler pages. (fixup_mmaps_after_fork): Don't fail if attached pages couldn't be created in child. Avoid superfluous call to VirtualFree. Check for original allocation protection to fix PAGE_WRITECOPY protection. * ntdll.h: Revert deletion of AT_ROUND_TO_PAGE define. * winsup.h (mmap_is_attached_page): Declare.
2005-12-07 19:16:47 +08:00
si.si_signo = SIGBUS;
si.si_code = BUS_OBJERR;
break;
default:
MEMORY_BASIC_INFORMATION m;
VirtualQuery ((PVOID) e->ExceptionInformation[1], &m, sizeof m);
si.si_signo = SIGSEGV;
si.si_code = m.State == MEM_FREE ? SEGV_MAPERR : SEGV_ACCERR;
break;
}
break;
case STATUS_STACK_OVERFLOW:
/* If we encounter a stack overflow, and if the thread has no alternate
stack, don't even try to call a signal handler. This is in line with
Linux behaviour and also makes a lot of sense on Windows. */
if (me.altstack.ss_flags)
global_sigs[SIGSEGV].sa_handler = SIG_DFL;
fallthrough;
2000-02-18 03:38:33 +08:00
case STATUS_ARRAY_BOUNDS_EXCEEDED:
case STATUS_IN_PAGE_ERROR:
case STATUS_NO_MEMORY:
case STATUS_INVALID_DISPOSITION:
* cygwin/include/signal.h: Add copyright notice. * cygwin.din: Make clock SIGFE. Add clock_gettime, sigwaitinfo, timer_create, timer_delete, timer_settime. * include/cygwin/version.h: Reflect above additions. * fork.cc (fork_child): Call fixup_timers_after_fork. * signal.cc (sigwait): Remove unused variable. * timer.cc: New file. (clock_gettime): Define new function. (timer_tracker): Define new struct used by timer functions. (timer_tracker::timer_tracker): New function. (to_us): New function. (timer_thread): New function. (timer_tracker::settime): New function. (timer_create): New function. (timer_settime): New function. (timer_delete): New function. (fixup_timers_after_fork): New function. * cygthread.cc: Bump thread count. * signal.cc (sigwaitinfo): Define new function. (sigwait): Redefine based on sigwaitinfo. * include/cygwin/signal.h (sigwaitinfo): Declare. (sigwait): Ditto. * dtable.cc (dtable::vfork_parent_restore): Avoid double close of ctty when ctty == ctty_on_hold. * cygtls.h (_threadinfo::threadkill): New element. (_threadinfo::set_threadkill): Declare new function. (_threadinfo::reset_threadkill): Declare new function. * dcrt0.cc (dcrt0_1): Call here so that it will be possible to attach to running process with #(*& Windows Me/9x. (initial_env): Try to initialize strace if uninitialized. * gendef: Don't zero signal if threadkill is set since that will happen in the called function. * signal.cc (sigwait): Ensure cleanup in error conditions. * sigproc.cc (sig_send): Clear packet mask storage. (wait_subproc): Fill in child exit code in siginfo_t structure. * thread.cc (pthread_kill): Set threadkill flag. * tlsoffsets.h: Regenerate. Throughout, use siginfo_t to fill out all signal information for "kernel" signals. * cygtls.h (_threadinfo::set_siginfo): Declare new function. * cygtls.cc (_threadinfo::set_siginfo): Define new function. * dcrt0.cc (do_exit): Accommodate siginfo_t considerations. * exceptions.cc (handle_exceptions): Ditto. (sig_handle_tty_stop): Ditto. (ctrl_c_handler): Use killsys() to send signal. (sigpacket::process): Rename from sig_handle. Use siginfo_t field from sigpacket for everything. (tty_min::kill_pgrp): Accommodate siginfo_t considerations. (fhandler_termios::bg_check): Ditto. * fhandler_tty.cc (fhandler_tty_slave::ioctl): Use killsys() to send signal. * signal.cc (kill_worker): Rewrite to use siginfo_t second argument. (kill_pgrp): Ditto. (kill0): Define new function pulled from kill(). (kill): Rewrite as frontend to kill0. (killsys): Define new function. * sigproc.cc (sigelem): Eliminate. (sigpacket): Move to sigproc.h. Subsume sigelem. (pending_signals): Use sigpacket rather than sigelem for everything. (sig_clear): Ditto. (wait_sig): Ditto. (sig_send): Rewrite to use siginfo_t argument. (sig_send): New function wratpper to sig_send with siginfo_t argument. (wait_subproc): Accommodate siginfo_t considerations. * thread.cc (pthread_kill): Ditto. * sigproc.h (sigpacket): Move here. (sigpacket::process): Declare "new" function. (sig_handle): Eliminate declaration. (sig_send): Declare with new paramaters. (killsys): Declare new function. (kill_pgrp): Declare. * winsup.h: Move some signal-specific stuff to sigproc.h. * include/cygwin/signal.h: Tweak some siginfo_t stuff.
2004-01-19 13:46:54 +08:00
si.si_signo = SIGSEGV;
si.si_code = SEGV_MAPERR;
2000-02-18 03:38:33 +08:00
break;
case STATUS_CONTROL_C_EXIT:
* cygwin/include/signal.h: Add copyright notice. * cygwin.din: Make clock SIGFE. Add clock_gettime, sigwaitinfo, timer_create, timer_delete, timer_settime. * include/cygwin/version.h: Reflect above additions. * fork.cc (fork_child): Call fixup_timers_after_fork. * signal.cc (sigwait): Remove unused variable. * timer.cc: New file. (clock_gettime): Define new function. (timer_tracker): Define new struct used by timer functions. (timer_tracker::timer_tracker): New function. (to_us): New function. (timer_thread): New function. (timer_tracker::settime): New function. (timer_create): New function. (timer_settime): New function. (timer_delete): New function. (fixup_timers_after_fork): New function. * cygthread.cc: Bump thread count. * signal.cc (sigwaitinfo): Define new function. (sigwait): Redefine based on sigwaitinfo. * include/cygwin/signal.h (sigwaitinfo): Declare. (sigwait): Ditto. * dtable.cc (dtable::vfork_parent_restore): Avoid double close of ctty when ctty == ctty_on_hold. * cygtls.h (_threadinfo::threadkill): New element. (_threadinfo::set_threadkill): Declare new function. (_threadinfo::reset_threadkill): Declare new function. * dcrt0.cc (dcrt0_1): Call here so that it will be possible to attach to running process with #(*& Windows Me/9x. (initial_env): Try to initialize strace if uninitialized. * gendef: Don't zero signal if threadkill is set since that will happen in the called function. * signal.cc (sigwait): Ensure cleanup in error conditions. * sigproc.cc (sig_send): Clear packet mask storage. (wait_subproc): Fill in child exit code in siginfo_t structure. * thread.cc (pthread_kill): Set threadkill flag. * tlsoffsets.h: Regenerate. Throughout, use siginfo_t to fill out all signal information for "kernel" signals. * cygtls.h (_threadinfo::set_siginfo): Declare new function. * cygtls.cc (_threadinfo::set_siginfo): Define new function. * dcrt0.cc (do_exit): Accommodate siginfo_t considerations. * exceptions.cc (handle_exceptions): Ditto. (sig_handle_tty_stop): Ditto. (ctrl_c_handler): Use killsys() to send signal. (sigpacket::process): Rename from sig_handle. Use siginfo_t field from sigpacket for everything. (tty_min::kill_pgrp): Accommodate siginfo_t considerations. (fhandler_termios::bg_check): Ditto. * fhandler_tty.cc (fhandler_tty_slave::ioctl): Use killsys() to send signal. * signal.cc (kill_worker): Rewrite to use siginfo_t second argument. (kill_pgrp): Ditto. (kill0): Define new function pulled from kill(). (kill): Rewrite as frontend to kill0. (killsys): Define new function. * sigproc.cc (sigelem): Eliminate. (sigpacket): Move to sigproc.h. Subsume sigelem. (pending_signals): Use sigpacket rather than sigelem for everything. (sig_clear): Ditto. (wait_sig): Ditto. (sig_send): Rewrite to use siginfo_t argument. (sig_send): New function wratpper to sig_send with siginfo_t argument. (wait_subproc): Accommodate siginfo_t considerations. * thread.cc (pthread_kill): Ditto. * sigproc.h (sigpacket): Move here. (sigpacket::process): Declare "new" function. (sig_handle): Eliminate declaration. (sig_send): Declare with new paramaters. (killsys): Declare new function. (kill_pgrp): Declare. * winsup.h: Move some signal-specific stuff to sigproc.h. * include/cygwin/signal.h: Tweak some siginfo_t stuff.
2004-01-19 13:46:54 +08:00
si.si_signo = SIGINT;
2000-02-18 03:38:33 +08:00
break;
case STATUS_INVALID_HANDLE:
/* CloseHandle will throw this exception if it is given an
invalid handle. We don't care about the exception; we just
want CloseHandle to return an error. This can be revisited
if gcc ever supports Windows style structured exception
handling. */
return ExceptionContinueExecution;
2000-02-18 03:38:33 +08:00
case STATUS_GCC_THROW:
case STATUS_GCC_UNWIND:
case STATUS_GCC_FORCED:
/* According to a comment in the GCC function
_Unwind_RaiseException(), GCC expects us to continue all the
(continuable) GCC exceptions that reach us. */
return ExceptionContinueExecution;
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default:
/* If we don't recognize the exception, we have to assume that
we are doing structured exception handling, and we let
something else handle it. */
return ExceptionContinueSearch;
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}
debug_printf ("In cygwin_except_handler exception %y at %p sp %p",
e->ExceptionCode, in->_CX_instPtr, in->_CX_stackPtr);
debug_printf ("In cygwin_except_handler signal %d at %p",
si.si_signo, in->_CX_instPtr);
2013-04-23 17:44:36 +08:00
PUINT_PTR framep = (PUINT_PTR) in->_CX_framePtr;
/* Sometimes, when a stack is screwed up, the frame pointer tends to be NULL.
In that case, base the stacktrace on the stack pointer. In most cases,
it allows to generate useful stack trace. */
2013-04-23 17:44:36 +08:00
if (!framep)
framep = (PUINT_PTR) in->_CX_stackPtr;
if (exit_state >= ES_SIGNAL_EXIT
&& (NTSTATUS) e->ExceptionCode != STATUS_CONTROL_C_EXIT)
api_fatal ("Exception during process exit");
else if (try_to_debug ())
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{
debugging = 1;
return ExceptionContinueExecution;
* cygtls.h (_cygtls::signal_exit): Delete from class. * exception.h (cygwin_exception): New class. (cygwin_exception::dumpstack): Declare new function. (cygwin_exception::context): Ditto. (cygwin_exception::dump_exception): Ditto. * exceptions.cc (cygwin_exception::dump_exception): Move into cygwin_exception class. Accommodate new variable names. (cygwin_exception::dumpstack): Ditto stackdump -> dumpstack. (exception::handle): Move andreas processing earlier. Defer signal processing decisions to the signal thread where they belong. Pass exception information to sig_send via new siginfo_t si_cyg field. (ctrl_c_handler): Wait for SIGHUP signal to be processed since it could cause a process exit and we don't want races with thread exit lock. (signal_exit): Move back here from sigproc.cc. Modify arguments and remove from sigpacket class. Decide when to dump core based on signal type. (sigpacket::process): Handle exiting signals in context of threads rather than in the signal thread. Signal debugger on non-Windows signals. Remove setup_signal_exit call. * sigproc.cc (no_signals_available): Remove argument. (signal_exit_code): Delete. (close_my_readsig): Ditto. (_cygtls::signal_exit): Move to exceptions.cc. (sigproc_terminate): Don't attempt to terminate signal thread. (setup_signal_exit): Delete. (exit_thread): Use new si_cyg entry in siginfo_t. (sig_send): Just use empty initializer for si. Accommodate change in no_signals_available argument. (wait_sig): Remove attempt to "go asynchronous" on process exit. Delete __SIGEXIT handling. Don't ever exit. * sigproc.h: Remove __SIGEXIT from signal enum. Renumber. * include/cygwin/signal.h (siginfo_t): Add si_cyg entry.
2013-01-03 02:34:06 +08:00
}
2013-04-23 17:44:36 +08:00
cygwin_exception exc (framep, in, e);
* cygtls.h (_cygtls::signal_exit): Delete from class. * exception.h (cygwin_exception): New class. (cygwin_exception::dumpstack): Declare new function. (cygwin_exception::context): Ditto. (cygwin_exception::dump_exception): Ditto. * exceptions.cc (cygwin_exception::dump_exception): Move into cygwin_exception class. Accommodate new variable names. (cygwin_exception::dumpstack): Ditto stackdump -> dumpstack. (exception::handle): Move andreas processing earlier. Defer signal processing decisions to the signal thread where they belong. Pass exception information to sig_send via new siginfo_t si_cyg field. (ctrl_c_handler): Wait for SIGHUP signal to be processed since it could cause a process exit and we don't want races with thread exit lock. (signal_exit): Move back here from sigproc.cc. Modify arguments and remove from sigpacket class. Decide when to dump core based on signal type. (sigpacket::process): Handle exiting signals in context of threads rather than in the signal thread. Signal debugger on non-Windows signals. Remove setup_signal_exit call. * sigproc.cc (no_signals_available): Remove argument. (signal_exit_code): Delete. (close_my_readsig): Ditto. (_cygtls::signal_exit): Move to exceptions.cc. (sigproc_terminate): Don't attempt to terminate signal thread. (setup_signal_exit): Delete. (exit_thread): Use new si_cyg entry in siginfo_t. (sig_send): Just use empty initializer for si. Accommodate change in no_signals_available argument. (wait_sig): Remove attempt to "go asynchronous" on process exit. Delete __SIGEXIT handling. Don't ever exit. * sigproc.h: Remove __SIGEXIT from signal enum. Renumber. * include/cygwin/signal.h (siginfo_t): Add si_cyg entry.
2013-01-03 02:34:06 +08:00
si.si_cyg = (void *) &exc;
/* POSIX requires that for SIGSEGV and SIGBUS, si_addr should be set to the
address of faulting memory reference. For SIGILL and SIGFPE these should
be the address of the faulting instruction. Other signals are apparently
undefined so we just set those to the faulting instruction too. */
si.si_addr = (si.si_signo == SIGSEGV || si.si_signo == SIGBUS)
? (void *) e->ExceptionInformation[1] : (void *) in->_CX_instPtr;
me.incyg++;
* cygtls.h (_cygtls::signal_exit): Delete from class. * exception.h (cygwin_exception): New class. (cygwin_exception::dumpstack): Declare new function. (cygwin_exception::context): Ditto. (cygwin_exception::dump_exception): Ditto. * exceptions.cc (cygwin_exception::dump_exception): Move into cygwin_exception class. Accommodate new variable names. (cygwin_exception::dumpstack): Ditto stackdump -> dumpstack. (exception::handle): Move andreas processing earlier. Defer signal processing decisions to the signal thread where they belong. Pass exception information to sig_send via new siginfo_t si_cyg field. (ctrl_c_handler): Wait for SIGHUP signal to be processed since it could cause a process exit and we don't want races with thread exit lock. (signal_exit): Move back here from sigproc.cc. Modify arguments and remove from sigpacket class. Decide when to dump core based on signal type. (sigpacket::process): Handle exiting signals in context of threads rather than in the signal thread. Signal debugger on non-Windows signals. Remove setup_signal_exit call. * sigproc.cc (no_signals_available): Remove argument. (signal_exit_code): Delete. (close_my_readsig): Ditto. (_cygtls::signal_exit): Move to exceptions.cc. (sigproc_terminate): Don't attempt to terminate signal thread. (setup_signal_exit): Delete. (exit_thread): Use new si_cyg entry in siginfo_t. (sig_send): Just use empty initializer for si. Accommodate change in no_signals_available argument. (wait_sig): Remove attempt to "go asynchronous" on process exit. Delete __SIGEXIT handling. Don't ever exit. * sigproc.h: Remove __SIGEXIT from signal enum. Renumber. * include/cygwin/signal.h (siginfo_t): Add si_cyg entry.
2013-01-03 02:34:06 +08:00
sig_send (NULL, si, &me); /* Signal myself */
if ((NTSTATUS) e->ExceptionCode == STATUS_STACK_OVERFLOW)
{
/* If we catched a stack overflow, and if the signal handler didn't exit
or longjmp, we're back here and about to continue, supposed to run the
offending instruction again. That works on Linux, but not on Windows.
In case of a stack overflow we're not immediately returning to the
system exception handler, but to NTDLL::__stkchk. __stkchk will then
terminate the applicaton. So what we do here is to signal our current
process again, but this time with SIG_DFL action. This creates a
stackdump and then exits through our own means. */
global_sigs[SIGSEGV].sa_handler = SIG_DFL;
sig_send (NULL, si, &me);
}
me.incyg--;
* cygtls.h (_cygtls::el): New field. (_cygtls::handle_exceptions): New function declaration. (_cygtls::handle_threadlist_exception): Ditto. (_cygtls::init_exception_handler): Ditto. (_cygtls::init_threadlist_exceptions): Remove arg from declaration. * cygtls.cc (_cygtls::call2): Don't initialize exceptions here. (_cygtls::init_thread): Do it here instead and use member function. (_cygtls::handle_threadlist_exception): Move into _cygtls class. (_cygtls::init_exception_handler): Ditto. Rely on existence of 'el' memmber in _cygtls. (_cygtls::init_threadlist_exceptions): Ditto. * dcrt0.cc (dll_crt0_1): Remove exception_list definition and setting since it now commonly resides in the tls. * exceptions.cc (init_exception_handler): Move to cygtls.cc. (init_exceptions): Ditto. (rtl_unwind): New, safe wrapper function for RtlUnwind. (_cygtls::handle_exceptions): Move to _cygtls. Call rtl_unwind to unwind frames and eliminate copying of structures. Put address of failing instruction in si_addr, not the address on the stack. Return 0 to indicate that we've handled this exception. * external.cc (cygwin_internal): Make CW_INIT_EXCEPTIONS a no-op. * sigproc.cc (wait_sig): Accommodate argument change to _cygtls::init_threadlist_exceptions. * tlsoffsets.h: Regenerate. * include/exceptions.h (exception_list): Add more stuff to the exception list. Apparently windows needs this? (init_exceptions): Remove bogus declaration. * include/cygwin/signal.h (SI_USER): Redefine as zero as per SUSv3. * thread.cc (pthread_kill): Set si_pid and si_uid. * timer.cc (timer_thread): Set si_code to SI_TIMER.
2005-12-03 12:23:35 +08:00
e->ExceptionFlags = 0;
return ExceptionContinueExecution;
2000-02-18 03:38:33 +08:00
}
/* Utilities to call a user supplied exception handler. */
#define SIG_NONMASKABLE (SIGTOMASK (SIGKILL) | SIGTOMASK (SIGSTOP))
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/* Non-raceable sigsuspend
Note: This implementation is based on the Single UNIX Specification
man page. This indicates that sigsuspend always returns -1 and that
attempts to block unblockable signals will be silently ignored.
This is counter to what appears to be documented in some UNIX
man pages, e.g. Linux. */
int
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handle_sigsuspend (sigset_t tempmask)
{
sigset_t oldmask = _my_tls.sigmask; // Remember for restoration
2000-02-18 03:38:33 +08:00
* DevNotes: Add entry cgf-000013. * cygserver_ipc.h (ipc_set_proc_info): Use _cygtls::ipc_set_proc_info to set per-thread signal arrived value. * cygthread.cc (cygthread::detach): Use per-thread signal_arrived via set_thread_waiting. * fork.cc (_cygtls::fixup_after_fork): Clear signal_arrived. (_cygtls::remove): Close any signal_arrived handle when thread exists. (_cygtls::find_tls): Remove unneeded function. * cygtls.h: Update copyright. (class _cygtls): Reorganize to help avoid rebuilding newlib when structure changes. (_cygtls::event): Delete. (_cygtls::threadkill): Ditto. (_cygtls::signal_waiting): Declare new bool. (_cygtls::find_tls): Delete declaration. (_cygtls::set_threadkill): Ditto. (_cygtls::reset_threadkill): Ditto. (_cygtls::set_signal_arrived): Declare new function. (class set_thread_waiting): Declare new class. * cygwait.cc (cw_nowait_storage): Define. (cygwait): Set per-thread signal_arrived via set_thread_waiting. Don't special-case _main_tls. * cygwait.h (cw_nowait): Define. (cw_infinite): Ditto. (cygwait): Redefine pathological wait-only case. * dcrt0.cc (dll_crt0_0): Remove call to now-defunct events_init(). (dll_crt0_1): Remove call to now-defunct create_signal_arrived(). * exceptions.cc: Reflect set_signal_mask() argument reordering throughout. Remove signal mask synchronization throughout. (events_init): Delete definition. (mask_sync): Delete now-unneeded mask synchronization. (set_signal_mask): Reverse order of arguments to "standard" to, from layout. Rename "newmask" argument to "setmask". Remove debugging. (sig_handle_tty_stop): Use cancelable_wait rather than WFMO. (_cygtls::interrupt_setup): Don't treat "threadkill" events specially. Conditionally set signal_arrived depending on whether the thread has created it or not. (sigpacket::process): Reorganize to reflect thread-specific sending of signals which is more in line with the way it was actually supposed to work. * fhandler_socket.cc (get_inet_addr): Use cancelable_wait rather than IsEventSignalled to avoid potential race. (fhandler_socket::wait_for_events): Set signal_arrived event using set_thread_waiting(). (fhandler_socket::close): Use cygwait for the case of just waiting 10 ms for a signal. * fhandler_tape.cc (fhandler_dev_tape::_lock): Use cancelable_wait rather than WFMO. Redo switch/case tests accordingly. * fhandler_termios.cc (fhandler_termios::bg_check): Use cygwait for case of just waiting 0 ms for a potential signal. * fhandler_tty.cc (fhandler_pty_master::process_slave_output): Use cancelable_wait rather than WFSO. * fhandler_windows.cc (fhandler_windows::read): Set per-thread signal_arrived via set_thread_waiting(). * flock.cc (lf_setlock): Ditto. * select.cc (pselect): Ditto. Set per-thread signal_arrived using set_thread_waiting(). * gendef: Don't special case handling of _cygtls::sig for threads. * gentls_offsets: Use #pragma once in tlsoffsets.h. * ntdll.h: Use #pragma once. * poll.cc: Reflect set_signal_mask() argument reordering. * posix_ipc.cc (ipc_mutex_lock): Use cancelable_wait rather than WFMO. (ipc_cond_timedwait): Set perl-thread signal arrived using set_thread_waiting(). * security.h: Use #pragma once. * signal.cc (abort): Reflect set_signal_mask() argument reordering. (clock_nanosleep): Ditto. Change call to cancelable_wait to properly specify handling of cancel and interrupt. (sigwaitinfo): Remove handling of per-thread event in favor of per-thread signal_arrived. Use cancelable_wait rather than WFSO. * sigproc.cc (signal_arrived): Delete definition. (create_signal_arrived): Ditto. * sigproc.h (signal_arrived): Delete declaration. (set_signal_mask): Avoid defining as a "C" function. Don't conditionally declare. (create_signal_arrived): Delete declaration. * syscalls.cc (rename): Use cygwait() rather than WFSO. * thread.h (fast_mutex::lock): Use cw_infinite rather than LARGE_NULL. * wait.cc (wait4): Ditto. * thread.cc (pthread_mutex::lock): Ditto. (pthread::join): Ditto. (semaphore::_wait): Ditto. (pthread_kill): Remove set_threadkill() accommodation. * tlsoffsets.h: Regenerate.
2012-07-22 06:58:20 +08:00
set_signal_mask (_my_tls.sigmask, tempmask);
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sigproc_printf ("oldmask %ly, newmask %ly", oldmask, tempmask);
2000-02-18 03:38:33 +08:00
2003-01-15 03:55:42 +08:00
pthread_testcancel ();
cygwait (NULL, cw_infinite, cw_cancel | cw_cancel_self | cw_sig_eintr);
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set_sig_errno (EINTR); // Per POSIX
/* A signal dispatch function will have been added to our stack and will
be hit eventually. Set the old mask to be restored when the signal
handler returns and indicate its presence by modifying deltamask. */
2000-02-18 03:38:33 +08:00
_my_tls.deltamask |= SIG_NONMASKABLE;
Eliminate use of sigframe and sigthread throughout. * Makefile.in (DLL_OFILES): Add sigfe.o. Remove reliance on cygwin.def from cygwin0.dll dependency since dependence on sigfe.o implies that. Generate def file on the fly using 'gendef'. * configure.in: Don't auto-generate cygwin.def. * configure: Regenerate. * cygwin.din: Add SIGFE stuff where appropriate. * dcrt0.cc (dll_crt0_1): Initialize cygwin tls early in process startup. Set _main_tls to address of the main thread's cygwin tls. * debug.h: Remove now unneeded WFSO and WFMO declarations. * exceptions.cc (_last_thread): Define. (set_thread_state_for_signals): New function. (reset_thread_exception_for_signals): Ditto. (init_thread_for_signals): Ditto. (delete_thread_for_signals): Ditto. (capture_thread_for_signals): Ditto. (handle_exceptions): Set return address explicitly for exceptions prior to calling sig_send. (interrupt_on_return): Eliminate. (setup_handler): Add preliminary implementation for dealing with thread-specific signals by querying _main_tls. (signal_exit): Use cygthread::main_thread_id instead of mainthread.id. (call_signal_handler_now): For now, just handle the main thread. * fork.cc (vfork): Save and restore main _my_tls. * gendef: New file. Generates def file and sigfe.s file. * gentls_offsets: New file. Generates offsets for perl to use in sigfe.s. * how-signals-work.txt: Mention that info is obsolete. * init.cc (dll_entry): Initialize cygwin tls storage here. * miscfuncs.cc (low_priority_sleep): Make a C function for easier calling from asm. * perthread.h (vfork_save::tls): New element. * signal.cc (nanosleep): Replace previous use of sigframe.call_signal_handler_now with straight call to call_signal_handler_now. (abort): Ditto. * syscalls.cc (readv): Ditto. * termios.cc (tcsetattr): Ditto. * wait.cc (wait4): Ditto. * sigproc.cc (sig_dispatch_pending): Ditto. (sig_send): Ditto. * sigproc.h: Declare call_signal_handler_now. * thread.cc (pthread::thread_init_wrapper): Initialize cygwin tls. Remove obsolete and unworking signal stuff. * thread.h (verifyable_object::sigs): Eliminate. (verifyable_object::sigmask): Eliminate. (verifyable_object::sigtodo): Eliminate. (verifyable_object::exit): Make attribute noreturn. (verifyable_object::thread_init_wrapper): Ditto. (pthread_null::exit): Ditto. * winbase.h (__stackbase): Always define. * winsup.h (low_priority_sleep): Declare as a "C" function. * include/cygwin/version.h: Bump API version to reflect sigwait export. * include/sys/queue.h: Protect SLIST_ENTRY from previous declaration. * signal.cc (sigwait): Implement. * select.cc (fhandler_base::ready_for_read): Add debugging output. * devices.h: Define more device pointers via their storage. * devices.in: Don't parse things like /dev/inet/tcp, as they really have no meaning. * devices.cc: Regenerate. * gendevices: Set proper protection for output file. * cygtls.h: New file. * gendef: New file. * gentls_offsets: New file. * tlsoffsets.h: New file. Autogenerated. * config/i386/longjmp.c: Remove. File subsumed by gendef output. * config/i386/makefrag: Remove obsolete file. * fhandler.cc: Remove spurious access_worker declaration. * spawn.cc (spawnve): Make debugging output more accurate. * cygwin-gperf: Remove. * devices.cc: Remove.
2003-11-29 04:55:59 +08:00
_my_tls.oldmask = oldmask; // Will be restored by signal handler
2000-02-18 03:38:33 +08:00
return -1;
}
extern DWORD exec_exit; // Possible exit value for exec
extern "C" {
static void
sig_handle_tty_stop (int sig, siginfo_t *, void *)
{
/* Silently ignore attempts to suspend if there is no accommodating
cygwin parent to deal with this behavior. */
* child_info.h (child_info_spawn::hexec_proc): Eliminate. * dcrt0.cc (dll_crt0_0): Remove hexec_proc stuff. * fork.cc (fork_child): Remove call to pinfo_fixup_after_fork. * pinfo.cc (set_myself): Close and zero pid_handle if set. (pinfo_fixup_after_fork): Delete. (proc_waiter): Don't close vchild.hProcess here. Do that when we are remove the vchild from procs. Save hProcess as pid_handle only on first reparent operation. (pinfo::wait): Don't set pid_handle here. (pinfo::alert_parent): Always try to send signal. If unsuccessful then close and zero wr_proc_pipe. * pinfo.h (pinfo::pinfo): Make sure that appropriate parts of the class are zeroed on construction. (pinfo::alert_parent): Take char argument. (pinfo_fixup_after_fork): Delete declaration. (hexec_proc): Ditto. * sigproc.cc (remove_proc): Close pid_handle and hProcess if appropriate. * spawn.cc (spawn_guts): Set cygheap->pid_handle on first exec. * cygheap.h (init_cygheap::pid_handle): New element. * pinfo.cc (set_myself): Clear previously existing cygheap->pid_handle when a new process has been started. (pinfo::wait): Make sure that a handle to the newly forked/spawned process is kept around so that the pid will not be reused. * pinfo.h (_pinfo::pid_handle): Move. (pinfo::pid_handle): to here. * spawn.cc (spawn_guts): Create a pid_handle in cygheap prior to spawning to ensure that the pid does not get reused during the lifetime of the "cygwin pid". * pinfo.h (pinfo::alert_parent): New function. * exceptions.cc (sig_handle_tty_stop): Use alert_parent to send "signals" to parent. * fork.cc (fork_parent): Don't close pi.hProcess. Let the waiter thread do that. * pinfo.cc (proc_waiter): Detect case where process exits without setting the exit code and use value from GetExitCodeProcess. Reluctantly implement __SIGREPARENT. (pinfo::alert_parent): Define. * sigproc.h (__SIGREPARENT): New enum. * spawn.cc (spawn_guts): Send reparent signal to parent on exec. Always create process in suspended state to avoid races. Remove cygthread.h in favor of cygtls.h throughout since cygtls now includes cygthread.h. Eliminate ppid_handle usage throughout. * child_info.h: Regenerate magic number (child_info): Remove pppid_handle. * cygthread.h (cygthread::release): New method. Frees thread without waiting. * cygthread.cc (cygthread::stub): Set _ctinfo in _mytls to point to information for executing thread. Don't call SetEvent if thread is no longer in use. (cygthread::simplestub): Ditto. * cygtls.h (_cygtls::_ctinfo): New element contains pointer to information about executing cygthread, if any. * dcrt0.cc: Remove last vestiges of per_thread stuff. (dll_crt0_0): Ditto. Remove accommodation for ppid_handle. (do_exit): Remove obsolete reparenting test. (_exit): Exit with a more SUSv3-like exit value. * dtable.cc (dtable::stdio_init): Check for myself->cygstarted rather than myself->ppid_handle to see if we were started by a cygwin process. * exceptions.cc (open_stackdumpfile): Ditto. (handle_exceptions): Ditto. (ctrl_c_handler): Ditto. (sig_handle_tty_stop): Ditto. Let parent send signal to itself on STOP. (sigpacket::process): Comment out vfork test. (signal_exit): Use more SUSv3-like exit value on signal. * external.cc (fillout_pinfo): Don't set hProcess. * fork.cc: Remove VFORK cruft. (per_thread::set): Delete. (fork_child): Remove perthread stuff. (fork_parent): Remove obsolete subproc_init. Accommodate new method for tracking subprocesses. * pinfo.cc (set_myself): Accommodate new pinfo/_pinfo layout. Set some things here that used to be set in wait_sig. (_pinfo::exit): Set exitcode here. Close process pipe. (_pinfo::commune_send): Accommodeate new pinfo/_pinfo layout. (proc_waiter): New function. Waits, in a thread for subprocess to go away. (pinfo::wait): New function. Initialization for proc_waiter. * pinfo.h (_pinfo::exitcode): New element. (_pinfo::cygstarted): Ditto. (_pinfo::wr_proc_pipe): Ditto. (_pinfo::ppid_handle): Delete. (_pinfo::hProcess): Delete. (_pinfo::lock): Delete. (pinfo::hProcess): New element. (pinfo::lock): Ditto. (pinfo::wait): Declare new function. (pinfo::preserve): Define new function. * sigproc.cc: Remove old stuff from wait_subproc thread based method. (zombies): Remove. (procs): New. (my_parent_is_alive): Just check that the parent pid exists. (mychild): Just use pinfo methods to determine if child is mine. (proc_subproc): Revamp PROC_ADDCHILD to use pinfo::wait. Remove PROC_CHILDTERMINATED logic. Use different method to remove processes from list when SIGCHLD == SIG_IGN. (proc_terminate): Gut. (subproc_init): Delete. (init_child_info): Remove setting of pppid_handle. (checkstate): Revamp to only scan procs array. (remove_proc): Rename from remove_zombie. Don't close hProcess or pid_handle. Don't release memory if it's myself. (stopped_or_terminated): Change logic to handle new consolidated proc/zombie array. (wait_subproc): Delete. * sigproc.h: Remove obsolete EXIT_* defines. (subproc_init): Remove declaration. * spawn.cc (spawn_guts): Remove reparenting stuff. Use standard wait logic to wait for child if started from a non-cygwin process. * tlsoffsets.h: Regenerate. * tty.cc (tty_init): Check for myself->cygstarted rather than myself->ppid_handle to see if we were started by a cygwin process. * include/sys/signal.h (external_pinfo::exitcode): Replace hProcess. * include/sys/wait.h (WCOREDUMP): Define. * fhandler_tty.cc (fhandler_tty_slave::read): Add debugging output for timeout case. * signal.cc (abort): Flag that we are exiting with the ABORT signal.
2004-11-26 12:15:10 +08:00
if (!myself->cygstarted)
myself->process_state &= ~PID_STOPPED;
else
{
* cygtls.h (_cygtls::reset_signal_arrived): Actually reset the signal_arrived event. (_cygtls::handle_SIGCONT): Declare ew function. * cygwait.cc (is_cw_sig_handle): Delete. (is_cw_sig_cont): New convenience define. (cygwait): Clear signal if is_cw_sig_cont and we got a SIGCONT. * cygwait.h (cw_wait_mask): Add cw_sig_cont. * exceptions.cc (sig_handle_tty_stop): Tighten "incyg" region. Use cw_sig_cont param for cygwait. Don't zero signal here outside of lock. (sigpacket::setup_handler): Don't check for in_forkee since we will now never get here in that state. (_cygtls::handle_SIGCONT): Define new function. (sigpacket::process): Call handle_SIGCONT early to deal with SIGCONT. Nuke continue_now handling. Allow SIGKILL to kill a suspended process. Delete a couple of now-unneeded labels. (_cygtls::call_signal_handler): Reorganize setting of incyg within lock. * sigproc.cc (pending_signals): Simplify. (pending_signals::clear): New method. (_cygtls::remove_wq): Reorganize to always close wq.thread_ev if it exists to avoid handle leaks. (sig_clear): Simplify by just calling sigq.clear(). (sig_dispatch_pending): Always call sigq.pending even in signal thread to force another loop in wait_sig. (sig_send): Remove a "goto out" just before out: label. (pending_signals::add): Simplify. (pending_signals::del): Delete. (pending_signals::next): Delete. (wait_sig): Define variable q to be the start of the signal queue. Just iterate through sigq queue, deleting processed or zeroed signals. Only set clearwait when the current signal is SIGCHLD. * sigproc.h: Add a comment about an unused enum.
2013-04-09 09:01:19 +08:00
_my_tls.incyg = 1;
myself->stopsig = sig;
myself->alert_parent (sig);
sigproc_printf ("process %d stopped by signal %d", myself->pid, sig);
/* FIXME! This does nothing to suspend anything other than the main
thread. */
/* Use special cygwait parameter to handle SIGCONT.
_main_tls.current_sig will be cleared under lock when SIGCONT is
detected. */
pthread::suspend_all_except_self ();
* cygtls.h (_cygtls::reset_signal_arrived): Actually reset the signal_arrived event. (_cygtls::handle_SIGCONT): Declare ew function. * cygwait.cc (is_cw_sig_handle): Delete. (is_cw_sig_cont): New convenience define. (cygwait): Clear signal if is_cw_sig_cont and we got a SIGCONT. * cygwait.h (cw_wait_mask): Add cw_sig_cont. * exceptions.cc (sig_handle_tty_stop): Tighten "incyg" region. Use cw_sig_cont param for cygwait. Don't zero signal here outside of lock. (sigpacket::setup_handler): Don't check for in_forkee since we will now never get here in that state. (_cygtls::handle_SIGCONT): Define new function. (sigpacket::process): Call handle_SIGCONT early to deal with SIGCONT. Nuke continue_now handling. Allow SIGKILL to kill a suspended process. Delete a couple of now-unneeded labels. (_cygtls::call_signal_handler): Reorganize setting of incyg within lock. * sigproc.cc (pending_signals): Simplify. (pending_signals::clear): New method. (_cygtls::remove_wq): Reorganize to always close wq.thread_ev if it exists to avoid handle leaks. (sig_clear): Simplify by just calling sigq.clear(). (sig_dispatch_pending): Always call sigq.pending even in signal thread to force another loop in wait_sig. (sig_send): Remove a "goto out" just before out: label. (pending_signals::add): Simplify. (pending_signals::del): Delete. (pending_signals::next): Delete. (wait_sig): Define variable q to be the start of the signal queue. Just iterate through sigq queue, deleting processed or zeroed signals. Only set clearwait when the current signal is SIGCHLD. * sigproc.h: Add a comment about an unused enum.
2013-04-09 09:01:19 +08:00
DWORD res = cygwait (NULL, cw_infinite, cw_sig_cont);
pthread::resume_all ();
switch (res)
{
case WAIT_SIGNALED:
myself->stopsig = SIGCONT;
myself->alert_parent (SIGCONT);
break;
default:
api_fatal ("WaitSingleObject returned %d", res);
break;
}
* cygtls.h (_cygtls::reset_signal_arrived): Actually reset the signal_arrived event. (_cygtls::handle_SIGCONT): Declare ew function. * cygwait.cc (is_cw_sig_handle): Delete. (is_cw_sig_cont): New convenience define. (cygwait): Clear signal if is_cw_sig_cont and we got a SIGCONT. * cygwait.h (cw_wait_mask): Add cw_sig_cont. * exceptions.cc (sig_handle_tty_stop): Tighten "incyg" region. Use cw_sig_cont param for cygwait. Don't zero signal here outside of lock. (sigpacket::setup_handler): Don't check for in_forkee since we will now never get here in that state. (_cygtls::handle_SIGCONT): Define new function. (sigpacket::process): Call handle_SIGCONT early to deal with SIGCONT. Nuke continue_now handling. Allow SIGKILL to kill a suspended process. Delete a couple of now-unneeded labels. (_cygtls::call_signal_handler): Reorganize setting of incyg within lock. * sigproc.cc (pending_signals): Simplify. (pending_signals::clear): New method. (_cygtls::remove_wq): Reorganize to always close wq.thread_ev if it exists to avoid handle leaks. (sig_clear): Simplify by just calling sigq.clear(). (sig_dispatch_pending): Always call sigq.pending even in signal thread to force another loop in wait_sig. (sig_send): Remove a "goto out" just before out: label. (pending_signals::add): Simplify. (pending_signals::del): Delete. (pending_signals::next): Delete. (wait_sig): Define variable q to be the start of the signal queue. Just iterate through sigq queue, deleting processed or zeroed signals. Only set clearwait when the current signal is SIGCHLD. * sigproc.h: Add a comment about an unused enum.
2013-04-09 09:01:19 +08:00
_my_tls.incyg = 0;
}
}
} /* end extern "C" */
* cygtls.h (_threadinfo::call): Remove regparm declaration to work around compiler bug. * autoload.cc (TryEnterCriticalSection): Remove. * dcrt0.cc (dll_crt0_0): Delete inappropriate setting of _my_tls.stackptr to NULL since it has really bad consequences. Make 'si' an automatic variable. * cygtls.cc (_threadinfo::init_thread): Correct thinko which caused thread list to be allocated every time. * cygtls.h (CYGTLS_PADSIZE): Define as const int. * sync.h: Make multiple inclusion safe. (muto::next): Eliminate. (muto::exiting_thread): New variable. (muto::set_exiting_thread): New function. (new_muto): Change to use different section for mutos since c++ give inexplicable warning in some cases otherwise. (new_muto1): Ditto. * dcrt0.cc (do_exit): Call muto::set_exiting_thread here. * sync.cc (muto_start): Eliminate. (muto::acquire): Always give exiting thread a lock. Never give thread a lock if exiting. (muto::release): Ditto for releasing. * dtable.cc (dtable::init_lock): Unline function and define here. * dtable.h (lock_cs): Define as a muto since critical sections seem to work oddly on Windows Me. (lock): Accommodate switch to muto. (unlock): Ditto. * exceptions.cc (setup_handler): Don't worry about acquiring mutos since that hasn't mattered for a long time. (signal_exit): Ditto: muto stuff will be handled automatically on exit now. * Makefile.in (DLL_IMPORTS): Link advapi32 to ensure proper DLL initialization. * autoload.cc (RegCloseKey): Arbitrarily choose this function as a "seed" to pull the advapi32 link library in. So, comment out the autoloading. * cygtls.cc (_threadinfo::init_thread): Just clear CYGTLS_PADSIZE. (_threadinfo::remove): Add debugging. (_threadinfo::find_tls): Ditto. * cygtls.h (_threadinfo::padding): Make zero length (for now?). * dcrt0.cc (dll_crt0_0): Move more initialization here from dll_crt0_1. (dll_crt0_1): See above. * dtable.h (dtable::lock): Remove commented out critical section locking. * dtable.h (dtable::init_lock): Remove commented out critical section locking. * dtable.h (dtable::unlock): Remove commented out critical section locking. * exceptions.cc (interruptible): bool'ize. * init.cc (threadfunc_fe): Revert to storing threadfunc at stack bottom. (munge_threadfunc): Ditto. Avoid adding overhead to calibration_thread. (prime_threads): Don't initialize tls stuff. (dll_entry): Make minor change to initialization order. * tlsoffsets.h: Regenerate. * sigproc.cc (wait_sig): Add sanity check for end of process thread exit. * select.h: Make minor formatting change. * Makefile.in: Add still more -fomit-frame-pointer functions. * dtable.h (dtable::lock): New function. (dtable::unlock): New function. (dtable::init_lock): New function. * cygheap.h (HEAP_TLS): Declare new enum value. (init_cygheap::threadlist): Declare new array. (init_cygheap::sthreads): Declare new variable. (cygheap_fdmanip::~cygheap_fdmanip): Use new dtable lock/unlock functions. (cygheap_fdnew::cygheap_fdnew): Ditto. (cygheap_fdget::cygheap_fdget): Ditto. * dtable.cc (dtable_init): Initialize fdtab critical section. (dtable::fixup_after_fork): Ditto. (dtable::fixup_after_exec): Ditto. (dtable::dup2): Use lock/unlock calls to protect access to fdtab. (dtable::find_fifo): Ditto. (dtable::fixup_before_fork): Ditto. (dtable::fixup_before_exec): Ditto. (dtable::set_file_pointers_for_exec): Ditto. (dtable::vfork_child_dup): Ditto. (dtable::vfork_parent_restore): Ditto. * syscalls.cc (close_all_files): Ditto. * sync.h (muto::acquired): Declare new function. (new_muto1): Declare new macro used to specify name of muto storage. * sync.cc (muto::acquired): Define new function. * cygthread.cc (cygthread::stub): Remove signal chain removal call since it is handled during initialization now. * cygthread.cc (cygthread::simplestub): Remove signal chain removal call since it is handled during initialization now. * cygtls.cc (sentry): New class used for locking. Use throughout. (_threadinfo::reset_exception): Don't pop stack. (_threadinfo::find_tls): Move from exceptions.cc. (_threadinfo::init_thread): Initialize array of threads rather than linked list. Take second argument indicating thread function for this thread. (_threadinfo::remove): Search thread array rather than linked list. Use sentry to lock. Only unlock if we got the lock. (_threadinfo::find_tls): Ditto for first two. (handle_threadlist_exception): Handle exceptions when manipulating the thread list in case of premature thread termination. (_threadinfo::init_threadlist_exceptions): Ditto. * cygtls.h (TLS_STACK_SIZE): Decrease size. (_threadinfo::padding): Add element to avoid overwriting lower part of stack. (_threadinfo::remove): Add a "wait" argument to control how long we wait for a lock before removing. * exceptions.cc (init_exception_handler): Make global. Take argument to control exception handler being set. (ctrl_c_handler): Wait forever when removing self from signal chain. (_threadinfo::find_tls): Move to cygtls.cc. (sig_handle): Reorganize detection for thread-specific signals. * heap.cc (heap_init): Rework slightly. Make fatal error more verbose. Remove malloc initialization since it can't happen during dll attach. * init.cc (search_for): Move address to search for on stack here. (threadfunc_ix): Ditto for stack offset. Make shared so that stack walk potentially only has to be done once when cygwin processes are running. (threadfunc_fe): Use standard tls to store thread function (may change back later). (calibration_thread): New function. Potentially called to find threadfunc_ix. (munge_threadfunc): Search for "search_for" value on stack. Output warning when thread func not found on stack. Use standard tls to store thread function. (prime_threads): New function. Called to prime thread front end. (dll_entry): Call dll_crt0_0 here when DLL_PROCESS_ATTACH. Call prime_threads here. Try to remove thread from signal list here. * sigproc.cc (wait_sig): Initialize threadlist exception stuff here. * thread.cc (pthread::exit): Pass argument to signal list remove function. * thread.h: Remove obsolete *ResourceLock defines. * tlsoffsets.h: Regenerate. * winsup.h (spf): Define temporary debug macro to be deleted later. * dcrt0.cc (dll_crt0_0): New function, called during DLL initialization. Mainly consists of code pulled from dll_crt0_1. (dll_crt0_1): See above. (_dll_crt0): Wait for initial calibration thread to complete, if appropriate. Move some stuff to dll_crt0_0. (initialize_main_tls): Accommodate argument change to _thread_info::init_thread. * fork.cc (fork_child): Ditto. (sync_with_child): Fix debug message. * external.cc (cygwin_internal): Remove special considerations for uninitialized dll since initialization happens during dll attach now. * dlfcn.cc (dlopen): Remove obsolete *ResourceLock calls. (dlclose): Ditto. * cygheap.h (init_cygheap::close_ctty): Declare new function. * cygheap.cc (init_cygheap::close_ctty): Define new function. * syscalls.cc (close_all_files): Use close_ctty. (setsid): Ditto. * cygthread.cc (cygthread::stub): Remove exception initialization. * cygthread.cc (cygthread::stub): Remove exception initialization. (cygthread::simplestub): Ditto. * thread.cc (pthread::thread_init_wrapper): Ditto. * cygtls.cc (_last_thread): Make static. (_threadinfo::call2): Initialize exception handler here. (_threadinfo::find_tls): Move here. * exceptions.cc (_threadinfo::find_tls): Move. * dcrt0.cc (__api_fatal): Add prefix info to message here rather than including it in every call to function. * winsup.h (api_fatal): Accommodate above change. * debug.cc (add_handle): Don't do anything if cygheap not around. (mark_closed): Ditto. * dll_init.cc (dll_list::detach): Fix debug output. * fork.cc (sync_with_child): Ditto. (vfork): Improve debug output. * heap.cc (heap_init): Ditto. * exceptions.cc (try_to_debug): Clarify message when debugger attaches.
2004-01-14 23:45:37 +08:00
bool
_cygtls::interrupt_now (CONTEXT *cx, siginfo_t& si, void *handler,
struct sigaction& siga)
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{
bool interrupted;
/* Delay the interrupt if we are
1) somehow inside the DLL
2) in _sigfe (spinning is true) and about to enter cygwin DLL
3) in a Windows DLL. */
if (incyg || spinning || inside_kernel (cx))
interrupted = false;
else
{
DWORD64 &ip = cx->_CX_instPtr;
2013-04-23 17:44:36 +08:00
push (ip);
interrupt_setup (si, handler, siga);
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ip = pop ();
SetThreadContext (*this, cx); /* Restart the thread in a new location */
interrupted = true;
}
return interrupted;
2000-02-18 03:38:33 +08:00
}
void
_cygtls::interrupt_setup (siginfo_t& si, void *handler, struct sigaction& siga)
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{
push ((__tlsstack_t) sigdelayed);
deltamask = siga.sa_mask & ~SIG_NONMASKABLE;
Eliminate use of sigframe and sigthread throughout. * Makefile.in (DLL_OFILES): Add sigfe.o. Remove reliance on cygwin.def from cygwin0.dll dependency since dependence on sigfe.o implies that. Generate def file on the fly using 'gendef'. * configure.in: Don't auto-generate cygwin.def. * configure: Regenerate. * cygwin.din: Add SIGFE stuff where appropriate. * dcrt0.cc (dll_crt0_1): Initialize cygwin tls early in process startup. Set _main_tls to address of the main thread's cygwin tls. * debug.h: Remove now unneeded WFSO and WFMO declarations. * exceptions.cc (_last_thread): Define. (set_thread_state_for_signals): New function. (reset_thread_exception_for_signals): Ditto. (init_thread_for_signals): Ditto. (delete_thread_for_signals): Ditto. (capture_thread_for_signals): Ditto. (handle_exceptions): Set return address explicitly for exceptions prior to calling sig_send. (interrupt_on_return): Eliminate. (setup_handler): Add preliminary implementation for dealing with thread-specific signals by querying _main_tls. (signal_exit): Use cygthread::main_thread_id instead of mainthread.id. (call_signal_handler_now): For now, just handle the main thread. * fork.cc (vfork): Save and restore main _my_tls. * gendef: New file. Generates def file and sigfe.s file. * gentls_offsets: New file. Generates offsets for perl to use in sigfe.s. * how-signals-work.txt: Mention that info is obsolete. * init.cc (dll_entry): Initialize cygwin tls storage here. * miscfuncs.cc (low_priority_sleep): Make a C function for easier calling from asm. * perthread.h (vfork_save::tls): New element. * signal.cc (nanosleep): Replace previous use of sigframe.call_signal_handler_now with straight call to call_signal_handler_now. (abort): Ditto. * syscalls.cc (readv): Ditto. * termios.cc (tcsetattr): Ditto. * wait.cc (wait4): Ditto. * sigproc.cc (sig_dispatch_pending): Ditto. (sig_send): Ditto. * sigproc.h: Declare call_signal_handler_now. * thread.cc (pthread::thread_init_wrapper): Initialize cygwin tls. Remove obsolete and unworking signal stuff. * thread.h (verifyable_object::sigs): Eliminate. (verifyable_object::sigmask): Eliminate. (verifyable_object::sigtodo): Eliminate. (verifyable_object::exit): Make attribute noreturn. (verifyable_object::thread_init_wrapper): Ditto. (pthread_null::exit): Ditto. * winbase.h (__stackbase): Always define. * winsup.h (low_priority_sleep): Declare as a "C" function. * include/cygwin/version.h: Bump API version to reflect sigwait export. * include/sys/queue.h: Protect SLIST_ENTRY from previous declaration. * signal.cc (sigwait): Implement. * select.cc (fhandler_base::ready_for_read): Add debugging output. * devices.h: Define more device pointers via their storage. * devices.in: Don't parse things like /dev/inet/tcp, as they really have no meaning. * devices.cc: Regenerate. * gendevices: Set proper protection for output file. * cygtls.h: New file. * gendef: New file. * gentls_offsets: New file. * tlsoffsets.h: New file. Autogenerated. * config/i386/longjmp.c: Remove. File subsumed by gendef output. * config/i386/makefrag: Remove obsolete file. * fhandler.cc: Remove spurious access_worker declaration. * spawn.cc (spawnve): Make debugging output more accurate. * cygwin-gperf: Remove. * devices.cc: Remove.
2003-11-29 04:55:59 +08:00
sa_flags = siga.sa_flags;
func = (void (*) (int, siginfo_t *, void *)) handler;
if (siga.sa_flags & SA_RESETHAND)
siga.sa_handler = SIG_DFL;
Eliminate use of sigframe and sigthread throughout. * Makefile.in (DLL_OFILES): Add sigfe.o. Remove reliance on cygwin.def from cygwin0.dll dependency since dependence on sigfe.o implies that. Generate def file on the fly using 'gendef'. * configure.in: Don't auto-generate cygwin.def. * configure: Regenerate. * cygwin.din: Add SIGFE stuff where appropriate. * dcrt0.cc (dll_crt0_1): Initialize cygwin tls early in process startup. Set _main_tls to address of the main thread's cygwin tls. * debug.h: Remove now unneeded WFSO and WFMO declarations. * exceptions.cc (_last_thread): Define. (set_thread_state_for_signals): New function. (reset_thread_exception_for_signals): Ditto. (init_thread_for_signals): Ditto. (delete_thread_for_signals): Ditto. (capture_thread_for_signals): Ditto. (handle_exceptions): Set return address explicitly for exceptions prior to calling sig_send. (interrupt_on_return): Eliminate. (setup_handler): Add preliminary implementation for dealing with thread-specific signals by querying _main_tls. (signal_exit): Use cygthread::main_thread_id instead of mainthread.id. (call_signal_handler_now): For now, just handle the main thread. * fork.cc (vfork): Save and restore main _my_tls. * gendef: New file. Generates def file and sigfe.s file. * gentls_offsets: New file. Generates offsets for perl to use in sigfe.s. * how-signals-work.txt: Mention that info is obsolete. * init.cc (dll_entry): Initialize cygwin tls storage here. * miscfuncs.cc (low_priority_sleep): Make a C function for easier calling from asm. * perthread.h (vfork_save::tls): New element. * signal.cc (nanosleep): Replace previous use of sigframe.call_signal_handler_now with straight call to call_signal_handler_now. (abort): Ditto. * syscalls.cc (readv): Ditto. * termios.cc (tcsetattr): Ditto. * wait.cc (wait4): Ditto. * sigproc.cc (sig_dispatch_pending): Ditto. (sig_send): Ditto. * sigproc.h: Declare call_signal_handler_now. * thread.cc (pthread::thread_init_wrapper): Initialize cygwin tls. Remove obsolete and unworking signal stuff. * thread.h (verifyable_object::sigs): Eliminate. (verifyable_object::sigmask): Eliminate. (verifyable_object::sigtodo): Eliminate. (verifyable_object::exit): Make attribute noreturn. (verifyable_object::thread_init_wrapper): Ditto. (pthread_null::exit): Ditto. * winbase.h (__stackbase): Always define. * winsup.h (low_priority_sleep): Declare as a "C" function. * include/cygwin/version.h: Bump API version to reflect sigwait export. * include/sys/queue.h: Protect SLIST_ENTRY from previous declaration. * signal.cc (sigwait): Implement. * select.cc (fhandler_base::ready_for_read): Add debugging output. * devices.h: Define more device pointers via their storage. * devices.in: Don't parse things like /dev/inet/tcp, as they really have no meaning. * devices.cc: Regenerate. * gendevices: Set proper protection for output file. * cygtls.h: New file. * gendef: New file. * gentls_offsets: New file. * tlsoffsets.h: New file. Autogenerated. * config/i386/longjmp.c: Remove. File subsumed by gendef output. * config/i386/makefrag: Remove obsolete file. * fhandler.cc: Remove spurious access_worker declaration. * spawn.cc (spawnve): Make debugging output more accurate. * cygwin-gperf: Remove. * devices.cc: Remove.
2003-11-29 04:55:59 +08:00
saved_errno = -1; // Flag: no errno to save
if (handler == sig_handle_tty_stop)
{
myself->stopsig = 0;
myself->process_state |= PID_STOPPED;
}
infodata = si;
/* current_sig should always be last thing set to avoid race */
this->current_sig = si.si_signo;
if (incyg)
set_signal_arrived ();
if (!have_execed && !(myself->exec_sendsig && !ch_spawn.iscygwin ()))
proc_subproc (PROC_CLEARWAIT, 1);
sigproc_printf ("armed signal_arrived %p, signal %d",
signal_arrived, si.si_signo);
}
2000-02-18 03:38:33 +08:00
extern "C" void
2000-02-18 03:38:33 +08:00
set_sig_errno (int e)
{
*_my_tls.errno_addr = e;
Eliminate use of sigframe and sigthread throughout. * Makefile.in (DLL_OFILES): Add sigfe.o. Remove reliance on cygwin.def from cygwin0.dll dependency since dependence on sigfe.o implies that. Generate def file on the fly using 'gendef'. * configure.in: Don't auto-generate cygwin.def. * configure: Regenerate. * cygwin.din: Add SIGFE stuff where appropriate. * dcrt0.cc (dll_crt0_1): Initialize cygwin tls early in process startup. Set _main_tls to address of the main thread's cygwin tls. * debug.h: Remove now unneeded WFSO and WFMO declarations. * exceptions.cc (_last_thread): Define. (set_thread_state_for_signals): New function. (reset_thread_exception_for_signals): Ditto. (init_thread_for_signals): Ditto. (delete_thread_for_signals): Ditto. (capture_thread_for_signals): Ditto. (handle_exceptions): Set return address explicitly for exceptions prior to calling sig_send. (interrupt_on_return): Eliminate. (setup_handler): Add preliminary implementation for dealing with thread-specific signals by querying _main_tls. (signal_exit): Use cygthread::main_thread_id instead of mainthread.id. (call_signal_handler_now): For now, just handle the main thread. * fork.cc (vfork): Save and restore main _my_tls. * gendef: New file. Generates def file and sigfe.s file. * gentls_offsets: New file. Generates offsets for perl to use in sigfe.s. * how-signals-work.txt: Mention that info is obsolete. * init.cc (dll_entry): Initialize cygwin tls storage here. * miscfuncs.cc (low_priority_sleep): Make a C function for easier calling from asm. * perthread.h (vfork_save::tls): New element. * signal.cc (nanosleep): Replace previous use of sigframe.call_signal_handler_now with straight call to call_signal_handler_now. (abort): Ditto. * syscalls.cc (readv): Ditto. * termios.cc (tcsetattr): Ditto. * wait.cc (wait4): Ditto. * sigproc.cc (sig_dispatch_pending): Ditto. (sig_send): Ditto. * sigproc.h: Declare call_signal_handler_now. * thread.cc (pthread::thread_init_wrapper): Initialize cygwin tls. Remove obsolete and unworking signal stuff. * thread.h (verifyable_object::sigs): Eliminate. (verifyable_object::sigmask): Eliminate. (verifyable_object::sigtodo): Eliminate. (verifyable_object::exit): Make attribute noreturn. (verifyable_object::thread_init_wrapper): Ditto. (pthread_null::exit): Ditto. * winbase.h (__stackbase): Always define. * winsup.h (low_priority_sleep): Declare as a "C" function. * include/cygwin/version.h: Bump API version to reflect sigwait export. * include/sys/queue.h: Protect SLIST_ENTRY from previous declaration. * signal.cc (sigwait): Implement. * select.cc (fhandler_base::ready_for_read): Add debugging output. * devices.h: Define more device pointers via their storage. * devices.in: Don't parse things like /dev/inet/tcp, as they really have no meaning. * devices.cc: Regenerate. * gendevices: Set proper protection for output file. * cygtls.h: New file. * gendef: New file. * gentls_offsets: New file. * tlsoffsets.h: New file. Autogenerated. * config/i386/longjmp.c: Remove. File subsumed by gendef output. * config/i386/makefrag: Remove obsolete file. * fhandler.cc: Remove spurious access_worker declaration. * spawn.cc (spawnve): Make debugging output more accurate. * cygwin-gperf: Remove. * devices.cc: Remove.
2003-11-29 04:55:59 +08:00
_my_tls.saved_errno = e;
2000-02-18 03:38:33 +08:00
}
int
sigpacket::setup_handler (void *handler, struct sigaction& siga, _cygtls *tls)
2000-02-18 03:38:33 +08:00
{
CONTEXT cx;
bool interrupted = false;
if (tls->current_sig)
{
Throughout use "have_execed" macro rather than "hExeced" global handle. Throughout rename _PROC_* to _CH_*. * child_info.h: Include "pinfo.h". (child_info_types): Rename _PROC_* -> _CH_* to avoid confusion with similarly named constants. (_PROC_*): Delete unneeded aliases. (PROC_*): Ditto. (CURR_CHILD_INFO_MAGIC): Ditto. (cchildren): Define using "pinfo_minimal". (child_info::set_saw_ctrl_c): Move to (child_info_spawn::set_saw_ctrl_c): Here. (child_info_spawn::lock): New field. (child_info_spawn::hExeced): Ditto. (child_info_spawn::ev): Ditto. (child_info_spawn::~child_info_spawn): Move to sigproc.cc. (child_info_spawn::child_info_spawn): Ditto. (child_info_spawn::cleanup): Declare new function. (child_info_spawn::set_saw_ctrl_c): Move to this class. Set flag only when execed and return true when we have set the flag. (child_info_spawn::child_info_spawn::signal_myself_exited): New function. (child_info_spawn::wait_for_myself): Ditto. (child_info_spawn::has_execed_cygwin): Ditto. (child_info_spawn::has_execed): Ditto. Replaces "hExeced" test. (child_info_spawn::operator HANDLE&): New operator. (child_info_spawn::worker): Define old "spawn_guts" as class member. (ch_spawn): Declare. (have_execed): Define. (have_execed_cygwin): Ditto. * cygheap.h: Update comment. * dcrt0.cc (get_cygwin_startup_info): Use _CH_* enums. (child_info_spawn::handle_spawn): Ditto. (dll_crt0_0): Ditto. (multiple_cygwin_problem): Ditto. * exceptions.cc (chExeced): Delete obsolete declaration. (ctrl_c_handler): Reference set_saw_ctrl_c via new ch_spawn global. * globals.cc (hExeced): Delete. * pinfo.cc (pinfo::thisproc): Refer to cygheap as ::cygheap for consistency in handle naming when -DDEBUGGING. (pinfo::init): Accommodate case where myself.h is known but h0 is passed in. (pinfo::pinfo): New constructor for setting up a pinfo passed in by previous exec'or. (pinfo::proc_waiter): Don't handle subprocess if we're in the process of exiting due to an exec of a cygwin process. Don't close rd_proc_pipe here. Close it when we actually are finished with the process. Use new ch_spawn.signal_myself_exited function to let exec stub know that subprocess has exited. (pinfo::wait): Clarify debugging output. (pinfo::release): Use "close_h" to close all handles to avoid races. (winpids::add): Assume that elements of the array do not need to be zeroed and are properly initialized or suffer problems on pinfo::release. Don't close hProcess since release does that now. * pinfo.h: Update comment. (pinfo_minimal): Move some elements from pinfo here so that child_info_spawn can use them. (pinfo): Inherit from pinfo_minimal. (pinfo::pinfo): Modify to accommodate new pinfo_minimal. (pinfo::allow_remove): New function. * sigproc.cc (proc_subproc): Use boolean values for true/false. Implement PROC_EXEC_CLEANUP. (proc_terminate): Set ppid = 1 since the procs list will only be iterated when the process has not execed. Don't do any cleanup here since it is now handled in pinfo::release. (sigproc_init): Initialize sync_proc_subproc earlier. (child_info::child_info): Assume that all important fields are properly initialized and avoid memset(). (child_info_spawn::child_info_spawn): Specifically test for execing and then set up appropriate fields in the struct. (child_info_spawn::cleanup): Define new function. (child_info_spawn::record_children): Specifically test for being execed here. Fill in pinfo_minimal part of children array. (child_info_spawn::reattach_children): Use constructor to duplicate information for previous exec'or. Add more debugging output. (remove_proc): Force deletion of thread when exiting due to exec. Rely on pinfo::cleanup in release. * sigproc.h (PROC_EXEC_CLEANUP): New enum. (PROC_DETACHED_CHILD): Delete. * spawn.cc (chExeced): Delete. (child_info_spawn::worker): Rename from spawn_guts. Use elements of child_info_spawn throughout rather than ch.whatever. Use ::cygheap to refer to global rather than element of child_info. Use wait_for_myself() rather than waitpid(). Call child_info_spawn::cleanup on function return. (spawnve): Reflect movement of spawn_guts functionality into child_info_spawn::worker. * syscalls.cc (popen): Ditto. * winsup.h (spawn_guts): Delete declaration.
2011-11-14 09:29:49 +08:00
sigproc_printf ("trying to send signal %d but signal %d already armed",
si.si_signo, tls->current_sig);
goto out;
}
for (int n = 0; n < CALL_HANDLER_RETRY_OUTER; n++)
{
for (int i = 0; i < CALL_HANDLER_RETRY_INNER; i++)
{
tls->lock ();
if (tls->incyg)
{
sigproc_printf ("controlled interrupt. stackptr %p, stack %p, "
"stackptr[-1] %p",
tls->stackptr, tls->stack, tls->stackptr[-1]);
tls->interrupt_setup (si, handler, siga);
interrupted = true;
tls->unlock ();
goto out;
}
DWORD res;
HANDLE hth = (HANDLE) *tls;
if (!hth)
{
tls->unlock ();
sigproc_printf ("thread handle NULL, not set up yet?");
}
else
{
/* Suspend the thread which will receive the signal.
If one of these conditions is not true we loop.
If the thread is already suspended (which can occur when a
program has called SuspendThread on itself) then just queue
the signal. */
sigproc_printf ("suspending thread, tls %p, _main_tls %p",
tls, _main_tls);
res = SuspendThread (hth);
/* Just set pending if thread is already suspended */
if (res)
{
tls->unlock ();
ResumeThread (hth);
goto out;
}
cx.ContextFlags = CONTEXT_CONTROL | CONTEXT_INTEGER;
if (!GetThreadContext (hth, &cx))
sigproc_printf ("couldn't get context of thread, %E");
else
interrupted = tls->interrupt_now (&cx, si, handler, siga);
tls->unlock ();
ResumeThread (hth);
if (interrupted)
goto out;
}
sigproc_printf ("couldn't interrupt. trying again.");
yield ();
}
/* Hit here if we couldn't deliver the signal. Take a more drastic
action before trying again. */
Sleep (1);
2000-02-18 03:38:33 +08:00
}
out:
sigproc_printf ("signal %d %sdelivered", si.si_signo,
interrupted ? "" : "not ");
return interrupted;
2000-02-18 03:38:33 +08:00
}
* wininfo.h (wininfo::timer_active): Delete. (wininfo::itv): Ditto. (wininfo::start_time): Ditto. (wininfo::window_started): Ditto. (wininfo::getitimer): Ditto. (wininfo::setitimer): Ditto. (wininfo::wininfo): Ditto. (wininfo::lock): New method. (wininfo::release): Ditto. * window.cc: Use new lock/acquire wininfo methods throughout. (wininfo::wininfo): Delete (wininfo::getitimer): Ditto. (wininfo::setitimer): Ditto. (getitimer): Ditto. (setitimer): Ditto. (ualarm): Ditto. (alarm): Ditto. (wininfo::lock): Define new function. (wininfo::release): Ditto. (wininfo::process): Delete WM_TIMER handling. * timer.cc (struct timetracker): Delete it, flags. Add it_interval, interval_us, sleepto_us, running, init_muto(), syncthread, and gettime(). (ttstart): Make NO_COPY. (lock_timer_tracker): New class. (timer_tracker::timer_tracker): Distinguish ttstart case. (timer_tracker::~timer_tracker): New destructor. Clean out events, and reset magic. (timer_tracker::init_muto): New method. (to_us): Round up as per POSIX. (timer_thread): Reorganize to match timer_tracker::settime and timer_tracker::gettime. Call sig_send without wait. Call auto_release. (timer_tracker::settime): Reorganize logic to avoid race. Call gettime to recover old value. (timer_tracker::gettime): New method. (timer_create): Properly set errno on invalid timerid. Use new lock_timer_tracker method. (timer_delete): Ditto. Simplify code slightly. (timer_gettime): New function. (fixup_timers_after_fork): Reinit ttstart. (getitimer): New implementation. (setitimer): Ditto. (ualarm): Ditto. (alarm): Ditto. * cygwin.din: Export timer_gettime. * winsup.h: Remove has has_visible_window_station declaration. * Makefile.in (DLL_OFILES): Add lsearch.o. * cygthread.h (cygthread::notify_detached): New element. (cygthread::cygthread): Take optional fourth argument signifying event to signal on thread completion. * cygthread.cc (cygthread::stub): Signal notify_detached event, if it exists. (cygthread::cygthread): Initialize notify_detached from fourth argument. (cygthread::detach): Wait for notify_detached field is present. * lsearch.cc: New file. * search.h: Ditto. * include/cygwin/version.h: Bump API minor number to 126. * cygwin.din: Export lsearch, lfind.
2005-03-27 09:57:38 +08:00
static inline bool
has_visible_window_station ()
{
HWINSTA station_hdl;
USEROBJECTFLAGS uof;
DWORD len;
/* Check if the process is associated with a visible window station.
These are processes running on the local desktop as well as processes
running in terminal server sessions.
Processes running in a service session not explicitely associated
with the desktop (using the "Allow service to interact with desktop"
property) are running in an invisible window station. */
if ((station_hdl = GetProcessWindowStation ())
&& GetUserObjectInformationW (station_hdl, UOI_FLAGS, &uof,
* wininfo.h (wininfo::timer_active): Delete. (wininfo::itv): Ditto. (wininfo::start_time): Ditto. (wininfo::window_started): Ditto. (wininfo::getitimer): Ditto. (wininfo::setitimer): Ditto. (wininfo::wininfo): Ditto. (wininfo::lock): New method. (wininfo::release): Ditto. * window.cc: Use new lock/acquire wininfo methods throughout. (wininfo::wininfo): Delete (wininfo::getitimer): Ditto. (wininfo::setitimer): Ditto. (getitimer): Ditto. (setitimer): Ditto. (ualarm): Ditto. (alarm): Ditto. (wininfo::lock): Define new function. (wininfo::release): Ditto. (wininfo::process): Delete WM_TIMER handling. * timer.cc (struct timetracker): Delete it, flags. Add it_interval, interval_us, sleepto_us, running, init_muto(), syncthread, and gettime(). (ttstart): Make NO_COPY. (lock_timer_tracker): New class. (timer_tracker::timer_tracker): Distinguish ttstart case. (timer_tracker::~timer_tracker): New destructor. Clean out events, and reset magic. (timer_tracker::init_muto): New method. (to_us): Round up as per POSIX. (timer_thread): Reorganize to match timer_tracker::settime and timer_tracker::gettime. Call sig_send without wait. Call auto_release. (timer_tracker::settime): Reorganize logic to avoid race. Call gettime to recover old value. (timer_tracker::gettime): New method. (timer_create): Properly set errno on invalid timerid. Use new lock_timer_tracker method. (timer_delete): Ditto. Simplify code slightly. (timer_gettime): New function. (fixup_timers_after_fork): Reinit ttstart. (getitimer): New implementation. (setitimer): Ditto. (ualarm): Ditto. (alarm): Ditto. * cygwin.din: Export timer_gettime. * winsup.h: Remove has has_visible_window_station declaration. * Makefile.in (DLL_OFILES): Add lsearch.o. * cygthread.h (cygthread::notify_detached): New element. (cygthread::cygthread): Take optional fourth argument signifying event to signal on thread completion. * cygthread.cc (cygthread::stub): Signal notify_detached event, if it exists. (cygthread::cygthread): Initialize notify_detached from fourth argument. (cygthread::detach): Wait for notify_detached field is present. * lsearch.cc: New file. * search.h: Ditto. * include/cygwin/version.h: Bump API minor number to 126. * cygwin.din: Export lsearch, lfind.
2005-03-27 09:57:38 +08:00
sizeof uof, &len)
&& (uof.dwFlags & WSF_VISIBLE))
return true;
return false;
}
/* Keyboard interrupt handler. */
static BOOL
2000-02-18 03:38:33 +08:00
ctrl_c_handler (DWORD type)
{
static bool saw_close;
Rename _threadinfo to _cygtls, throughout. * cygtls.h (_cygtls::call_signal_handler): Rename from call_signal_handler_now. (_cygtls::push): Make second argument mandatory. (_cygtls::fixup_after_fork): Declare new function. (_cygtls::lock): Ditto. * cygtls.cc (_cygtls::fixup_after_fork): Define new function. * dcrt0.cc (cygwin_finished_initializing): Define as bool. (alloc_stack): Use _tlstop rather than arbitrary variable in probably vain attempt to avoid strange fork problem on CTRL-C. (dll_crt0_0): Remove obsolete winpids::init call. * dll_init.cc (dll_dllcrt0): Detect forkee condition as equivalent to initializing. * winsup.h (cygwin_finished_initializing): Declare as bool. * exceptions.cc (handle_exceptions): Rely on cygwin_finished_initializing to determine how to handle exception during process startup. (_cygtls::call_signal_handler): Rename from call_signal_handler_now. (_cygtls::interrupt_now): Fill in second argument to push. (signal_fixup_after_fork): Eliminate. (setup_handler): Initialize locked to avoid potential inappropriate unlock. Resume thread if it has acquired the stack lock. (ctrl_c_handler): Just exit if ctrl-c is hit before cygiwn has finished initializing. * fork.cc (sync_with_child): Don't call abort since it can cause exit deadlocks. (sync_with_child): Change debugging output slightly. (fork_child): Set cygwin_finished_initializing here. Call _cygtls fork fixup and explicitly call sigproc_init. (fork_parent): Release malloc lock on fork failure. (vfork): Call signal handler via _my_tls. * sigproc.cc (sig_send): Ditto. * syscalls.cc (readv): Ditto. * termios.cc (tcsetattr): Ditto. * wait.cc (wait4): Ditto. * signal.cc (nanosleep): Ditto. (abort): Ditto. (kill_pgrp): Avoid killing self if exiting. * sync.cc (muto::acquire): Remove (temporarily?) ill-advised exiting_thread check. * gendef (_sigfe): Be more agressive in protecting stack pointer from other access by signal thread. (_cygtls::locked): Define new function. (_sigbe): Ditto. (_cygtls::pop): Protect edx. (_cygtls::lock): Use guaranteed method to set eax to 1. (longjmp): Aggressively protect signal stack. * miscfuncs.cc (low_priority_sleep): Reduce "sleep time" for secs == 0. * pinfo.cc (winpids::set): Counterintuitively use malloc's lock to protect simultaneous access to the pids list since there are pathological conditions which can cause malloc to call winpid. (winpids::init): Eliminate. * pinfo.h (winpids::cs): Eliminate declaration. * pinfo.h (winpids::init): Eliminate definition.
2004-02-12 11:01:58 +08:00
/* Remove early or we could overthrow the threadlist in cygheap.
Deleting this line causes ash to SEGV if CTRL-C is hit repeatedly.
I am not exactly sure why that is. Maybe it's just because this
adds some early serialization to ctrl_c_handler which prevents
multiple simultaneous calls? */
_my_tls.remove (INFINITE);
#if 0
if (type == CTRL_C_EVENT || type == CTRL_BREAK_EVENT)
proc_subproc (PROC_KILLFORKED, 0);
#endif
/* Return FALSE to prevent an "End task" dialog box from appearing
for each Cygwin process window that's open when the computer
is shut down or console window is closed. */
if (type == CTRL_SHUTDOWN_EVENT)
{
#if 0
/* Don't send a signal. Only NT service applications and their child
processes will receive this event and the services typically already
handle the shutdown action when getting the SERVICE_CONTROL_SHUTDOWN
control message. */
sig_send (NULL, SIGTERM);
#endif
return FALSE;
}
if (myself->ctty != CTTY_UNINITIALIZED)
2000-02-18 03:38:33 +08:00
{
if (type == CTRL_CLOSE_EVENT)
{
sig_send (NULL, SIGHUP);
* cygwin/include/signal.h: Add copyright notice. * cygwin.din: Make clock SIGFE. Add clock_gettime, sigwaitinfo, timer_create, timer_delete, timer_settime. * include/cygwin/version.h: Reflect above additions. * fork.cc (fork_child): Call fixup_timers_after_fork. * signal.cc (sigwait): Remove unused variable. * timer.cc: New file. (clock_gettime): Define new function. (timer_tracker): Define new struct used by timer functions. (timer_tracker::timer_tracker): New function. (to_us): New function. (timer_thread): New function. (timer_tracker::settime): New function. (timer_create): New function. (timer_settime): New function. (timer_delete): New function. (fixup_timers_after_fork): New function. * cygthread.cc: Bump thread count. * signal.cc (sigwaitinfo): Define new function. (sigwait): Redefine based on sigwaitinfo. * include/cygwin/signal.h (sigwaitinfo): Declare. (sigwait): Ditto. * dtable.cc (dtable::vfork_parent_restore): Avoid double close of ctty when ctty == ctty_on_hold. * cygtls.h (_threadinfo::threadkill): New element. (_threadinfo::set_threadkill): Declare new function. (_threadinfo::reset_threadkill): Declare new function. * dcrt0.cc (dcrt0_1): Call here so that it will be possible to attach to running process with #(*& Windows Me/9x. (initial_env): Try to initialize strace if uninitialized. * gendef: Don't zero signal if threadkill is set since that will happen in the called function. * signal.cc (sigwait): Ensure cleanup in error conditions. * sigproc.cc (sig_send): Clear packet mask storage. (wait_subproc): Fill in child exit code in siginfo_t structure. * thread.cc (pthread_kill): Set threadkill flag. * tlsoffsets.h: Regenerate. Throughout, use siginfo_t to fill out all signal information for "kernel" signals. * cygtls.h (_threadinfo::set_siginfo): Declare new function. * cygtls.cc (_threadinfo::set_siginfo): Define new function. * dcrt0.cc (do_exit): Accommodate siginfo_t considerations. * exceptions.cc (handle_exceptions): Ditto. (sig_handle_tty_stop): Ditto. (ctrl_c_handler): Use killsys() to send signal. (sigpacket::process): Rename from sig_handle. Use siginfo_t field from sigpacket for everything. (tty_min::kill_pgrp): Accommodate siginfo_t considerations. (fhandler_termios::bg_check): Ditto. * fhandler_tty.cc (fhandler_tty_slave::ioctl): Use killsys() to send signal. * signal.cc (kill_worker): Rewrite to use siginfo_t second argument. (kill_pgrp): Ditto. (kill0): Define new function pulled from kill(). (kill): Rewrite as frontend to kill0. (killsys): Define new function. * sigproc.cc (sigelem): Eliminate. (sigpacket): Move to sigproc.h. Subsume sigelem. (pending_signals): Use sigpacket rather than sigelem for everything. (sig_clear): Ditto. (wait_sig): Ditto. (sig_send): Rewrite to use siginfo_t argument. (sig_send): New function wratpper to sig_send with siginfo_t argument. (wait_subproc): Accommodate siginfo_t considerations. * thread.cc (pthread_kill): Ditto. * sigproc.h (sigpacket): Move here. (sigpacket::process): Declare "new" function. (sig_handle): Eliminate declaration. (sig_send): Declare with new paramaters. (killsys): Declare new function. (kill_pgrp): Declare. * winsup.h: Move some signal-specific stuff to sigproc.h. * include/cygwin/signal.h: Tweak some siginfo_t stuff.
2004-01-19 13:46:54 +08:00
saw_close = true;
return FALSE;
}
if (!saw_close && type == CTRL_LOGOFF_EVENT)
{
/* The CTRL_LOGOFF_EVENT is sent when *any* user logs off.
The below code sends a SIGHUP only if it is not performing the
default activity for SIGHUP. Note that it is possible for two
SIGHUP signals to arrive if a process group leader is exiting
too. Getting this 100% right is saved for a future cygwin mailing
list goad. */
if (global_sigs[SIGHUP].sa_handler != SIG_DFL)
{
* cygtls.h (_cygtls::signal_exit): Delete from class. * exception.h (cygwin_exception): New class. (cygwin_exception::dumpstack): Declare new function. (cygwin_exception::context): Ditto. (cygwin_exception::dump_exception): Ditto. * exceptions.cc (cygwin_exception::dump_exception): Move into cygwin_exception class. Accommodate new variable names. (cygwin_exception::dumpstack): Ditto stackdump -> dumpstack. (exception::handle): Move andreas processing earlier. Defer signal processing decisions to the signal thread where they belong. Pass exception information to sig_send via new siginfo_t si_cyg field. (ctrl_c_handler): Wait for SIGHUP signal to be processed since it could cause a process exit and we don't want races with thread exit lock. (signal_exit): Move back here from sigproc.cc. Modify arguments and remove from sigpacket class. Decide when to dump core based on signal type. (sigpacket::process): Handle exiting signals in context of threads rather than in the signal thread. Signal debugger on non-Windows signals. Remove setup_signal_exit call. * sigproc.cc (no_signals_available): Remove argument. (signal_exit_code): Delete. (close_my_readsig): Ditto. (_cygtls::signal_exit): Move to exceptions.cc. (sigproc_terminate): Don't attempt to terminate signal thread. (setup_signal_exit): Delete. (exit_thread): Use new si_cyg entry in siginfo_t. (sig_send): Just use empty initializer for si. Accommodate change in no_signals_available argument. (wait_sig): Remove attempt to "go asynchronous" on process exit. Delete __SIGEXIT handling. Don't ever exit. * sigproc.h: Remove __SIGEXIT from signal enum. Renumber. * include/cygwin/signal.h (siginfo_t): Add si_cyg entry.
2013-01-03 02:34:06 +08:00
sig_send (myself, SIGHUP);
return TRUE;
}
return FALSE;
}
2000-02-18 03:38:33 +08:00
}
Throughout use "have_execed" macro rather than "hExeced" global handle. Throughout rename _PROC_* to _CH_*. * child_info.h: Include "pinfo.h". (child_info_types): Rename _PROC_* -> _CH_* to avoid confusion with similarly named constants. (_PROC_*): Delete unneeded aliases. (PROC_*): Ditto. (CURR_CHILD_INFO_MAGIC): Ditto. (cchildren): Define using "pinfo_minimal". (child_info::set_saw_ctrl_c): Move to (child_info_spawn::set_saw_ctrl_c): Here. (child_info_spawn::lock): New field. (child_info_spawn::hExeced): Ditto. (child_info_spawn::ev): Ditto. (child_info_spawn::~child_info_spawn): Move to sigproc.cc. (child_info_spawn::child_info_spawn): Ditto. (child_info_spawn::cleanup): Declare new function. (child_info_spawn::set_saw_ctrl_c): Move to this class. Set flag only when execed and return true when we have set the flag. (child_info_spawn::child_info_spawn::signal_myself_exited): New function. (child_info_spawn::wait_for_myself): Ditto. (child_info_spawn::has_execed_cygwin): Ditto. (child_info_spawn::has_execed): Ditto. Replaces "hExeced" test. (child_info_spawn::operator HANDLE&): New operator. (child_info_spawn::worker): Define old "spawn_guts" as class member. (ch_spawn): Declare. (have_execed): Define. (have_execed_cygwin): Ditto. * cygheap.h: Update comment. * dcrt0.cc (get_cygwin_startup_info): Use _CH_* enums. (child_info_spawn::handle_spawn): Ditto. (dll_crt0_0): Ditto. (multiple_cygwin_problem): Ditto. * exceptions.cc (chExeced): Delete obsolete declaration. (ctrl_c_handler): Reference set_saw_ctrl_c via new ch_spawn global. * globals.cc (hExeced): Delete. * pinfo.cc (pinfo::thisproc): Refer to cygheap as ::cygheap for consistency in handle naming when -DDEBUGGING. (pinfo::init): Accommodate case where myself.h is known but h0 is passed in. (pinfo::pinfo): New constructor for setting up a pinfo passed in by previous exec'or. (pinfo::proc_waiter): Don't handle subprocess if we're in the process of exiting due to an exec of a cygwin process. Don't close rd_proc_pipe here. Close it when we actually are finished with the process. Use new ch_spawn.signal_myself_exited function to let exec stub know that subprocess has exited. (pinfo::wait): Clarify debugging output. (pinfo::release): Use "close_h" to close all handles to avoid races. (winpids::add): Assume that elements of the array do not need to be zeroed and are properly initialized or suffer problems on pinfo::release. Don't close hProcess since release does that now. * pinfo.h: Update comment. (pinfo_minimal): Move some elements from pinfo here so that child_info_spawn can use them. (pinfo): Inherit from pinfo_minimal. (pinfo::pinfo): Modify to accommodate new pinfo_minimal. (pinfo::allow_remove): New function. * sigproc.cc (proc_subproc): Use boolean values for true/false. Implement PROC_EXEC_CLEANUP. (proc_terminate): Set ppid = 1 since the procs list will only be iterated when the process has not execed. Don't do any cleanup here since it is now handled in pinfo::release. (sigproc_init): Initialize sync_proc_subproc earlier. (child_info::child_info): Assume that all important fields are properly initialized and avoid memset(). (child_info_spawn::child_info_spawn): Specifically test for execing and then set up appropriate fields in the struct. (child_info_spawn::cleanup): Define new function. (child_info_spawn::record_children): Specifically test for being execed here. Fill in pinfo_minimal part of children array. (child_info_spawn::reattach_children): Use constructor to duplicate information for previous exec'or. Add more debugging output. (remove_proc): Force deletion of thread when exiting due to exec. Rely on pinfo::cleanup in release. * sigproc.h (PROC_EXEC_CLEANUP): New enum. (PROC_DETACHED_CHILD): Delete. * spawn.cc (chExeced): Delete. (child_info_spawn::worker): Rename from spawn_guts. Use elements of child_info_spawn throughout rather than ch.whatever. Use ::cygheap to refer to global rather than element of child_info. Use wait_for_myself() rather than waitpid(). Call child_info_spawn::cleanup on function return. (spawnve): Reflect movement of spawn_guts functionality into child_info_spawn::worker. * syscalls.cc (popen): Ditto. * winsup.h (spawn_guts): Delete declaration.
2011-11-14 09:29:49 +08:00
if (ch_spawn.set_saw_ctrl_c ())
{
if (myself->process_state & PID_NOTCYGWIN)
sigExeced = SIGINT;
return TRUE;
}
/* We're only the process group leader when we have a valid pinfo structure.
If we don't have one, then the parent "stub" will handle the signal. */
if (!pinfo (cygwin_pid (GetCurrentProcessId ())))
return TRUE;
if (type == CTRL_C_EVENT && ::cygheap->ctty
&& !cygheap->ctty->need_console_handler ())
/* Ctrl-C is handled in fhandler_console::cons_master_thread(). */
return TRUE;
* autoload.cc: Call _api_fatal in asm. * child_info.h: Redefine CURR_CHILD_INFO_MAGIC. (child_info_fork::abort): Rename from handle_failure. Change arguments. * cygtls.h (_local_storage::ttybuf): New field. * dcrt0.cc (vapi_fatal): Split api_fatal. Add "in forked process" to message when appropriate. (api_fatal): Use vapi_fatal. * devices.h: Make multiple inclusion safe. (fh_devices): Add FH_CONS* stuff. Reorder slightly. (device): Eliminate anonymous union. Add more ways to access minor/major. (device::setunit): Accommodate no-longer-anonymous union. (device::is_fs): Ditto. (device::is_fs_special): Ditto. (device::major): New function. (device::minor): Ditto. (device::is_device): New function. (device::not_device): Ditto. (device::operator int): New operator. (device::operator fh_devices): Ditto. (device::operator bool): Ditto. (device::operator DWORD): Ditto. (device::operator =): Ditto. (isproc_dev): New function. (isprocsys_dev): Ditto. (iscons_dev): Ditto. (istty_slave_dev): Ditto. * devices.in: Add new "/dev/cons*" strings. Accommodate no-longer-anonymous union throughout. (BRACK): Use more precise method for initialization. * devices.cc: Regenerate. * dtable.cc (dtable::stdio_init): Use get_cttyp instead of get_tty. (dtable::find_archetype): Use new DWORD operator in device to test archetypes. (dtable::init_std_file_from_handle): Use different method to initialize 'dev'. Adapt to different ctty handling and accommodate /dev/cons*. (fh_alloc): Accommodate no-longer-anonymous union. Adapt to new /dev/cons*. (build_fh_pc): Make debugging output more useful. * exceptions.cc (ctrl_c_handler): Use get_cttyp instead of get_tty. * external.cc (fillout_pinfo): Accommodate new cons* stuff. * fhandler.cc (fhandler_base::read): Eliminate is_slow() test. * fhandler.h (fhandler_base::*): Adapt to changes in device.h. (fhandler_*::is_slow): Delete. ( fhandler_proc::get_proc_fhandler): Return fh_devices type. * fhandler_console.cc (open_shared_console): New function. (console_unit): New class. (console_unit::console_unit): New constructor. (enum_windows): New function. Declare as friend to console_unit. (fhandler_console::set_unit): New function. (fhandler_console::get_tty_stuff): Call set_unit to set the unit number and determine if initialization is needed. Eliminate flags parameter. (tty_list::get_cttyp): Rename (sorta) from get_tty. Return pointer to correct tty_min. (fhandler_console::open): Adapt to elimination of argument to get_tty_stuff. (fhandler_console::output_tcsetattr): Properly detect error condition. (fhandler_console::fixup_after_fork_exec): Adapt to get_tty_stuff() setting tc automatically. * fhandler_proc.cc: Use FH_BAD rather than 0 throughout where using fh_devices enum. (fhandler_proc::get_proc_fhandler): Return fh_devices. Adapt to devices.h changes. * fhandler_process.cc: Adapt to devices.h changes. Use FH_BAD rather than 0 throughout where using fh_devices enum. * fhandler_procnet.cc: Ditto. * fhandler_procsys.cc: Ditto. * fhandler_procsysvipc.cc: Ditto. * fhandler_tape.cc (fhandler_dev_tape::fhandler_dev_tape): Ditto. * fhandler_termios.cc (handler_termios::bg_check): Use tc->ttyname() rather than assuming that we can construct a tty. * fhandler_tty.cc (fhandler_tty_master::fhandler_tty_master): Just return get_minor() of dev. (fhandler_pty_master::process_slave_output): Add slightly more debugging info. (fhandler_tty_slave::fhandler_tty_slave): Change name from ntty to unit. (fhandler_pty_master::open): Ditto. (fhandler_tty_slave::ioctl): Adapt to change which causes ctty to represent a complete device. (fhandler_tty_master::init_console): Add debugging for failure path. (fhandler_pty_master::setup): Use get_unit() to retrieve unit number rather than relying on raw ntty. (fhandler_pty_master::setup): Ditto. * fhandler_virtual.h (virt_tab_t): Redefine fhandler as fh_devices. * fork.cc: Remove obsolete vfork stuff. (frok::child): Don't assume that a ctty == 0 is valid. * mount.cc (mount_info::conv_to_win32_path): Adapt to device struct changes. (mount_info::conv_to_win32_path): Ditto. * path.cc (path_conv::check): Retrive major/minor numbers via a method rather than accessing them directly from device. Rely on dev operators to set/retrieve device information as required by device struct change. * path.h (isproc_dev): Move to devices.h. (isprocsys_dev): Ditto. (isvirtual_dev): Ditto. (path_conv:{isdevice,isfifo,isspecial,iscygdrive,issocket,get_devn,get_unitn}): Use device methods to access/manipulate devices. * pinfo.cc (pinfo::exit): Don't assume that ctty == 0 is valid. Use iscons_dev to determine if a device is a console. (_pinfo::_ctty): Use device::parse to generate tty/cons name. (_pinfo::set_ctty): Don't assume that ctty == 0 is valid. Remove redundant info from debugging. * shared.cc (offsets): Remove console offset. * shared_info.h (shared_locations): Ditto. * syscalls.cc (umask): Use device methods to manipulate device information. (ctermid): Use device::parse to generate term device name. * tlsoffsets.h: Regenerate. * tty.cc (ttyslot): Return minor number of ctty since ctty now represents a full device. (tty::create_master): Set ctty to a complete device. (tty_list::attach): Rework to detect new /dev/cons* stuff. (tty_list::terminate): Adapt to changes to ctty. (tty_list::init): Adapt to change to setntty - pass in device major number. (tty::exists): Use get_unit() to retrive tty unit number. (tty::open_mutex): Ditto. (tty::open_inuse): Ditto. (tty::create_inuse): Ditto. (tty::get_event): Ditto. (tty_min::ttyname): Define new function. * tty.h (tty_min::ntty): Redefine as fh_devices. (tty::exists): Use get_unit() to retrive tty unit number. (tty::open_mutex): Ditto. (tty::open_inuse): Ditto. (tty::create_inuse): Ditto. (tty::get_event): Ditto. (tty_min::ttyname): Declare new function. (tty::getntty): Declare as const. (tty_list::operator []): Assure that only minor part of argument is used. * dll_init.cc (dll_list::alloc): Detect mismatch of data segments early issuing an explicit error message if necessary. * heap.cc (heap_init): Adapt to changes from fork->handle_failure to fork->abort. * pinfo.h (EXITCODE_FORK_FAILED): New enum. (from Ryan Johnson) * sigproc.cc (child_info_fork::abort): Rename from handle_failure. Change arguments to allow passing in a printf-like message. * winsup.h (api_fatal): Delete macro definition. (api_fatal): Redefine from __api_fatal. (vapi_fatal): Declare new function. * include/sys/strace.h (strace_vprintf): Define new macro. * ntdll.h (_SYSTEM_INFORMATION_CLASS): Add SystemHandleInformation.
2011-05-29 02:17:09 +08:00
tty_min *t = cygwin_shared->tty.get_cttyp ();
if (!t)
return TRUE;
/* If process group leader is non-cygwin process or not exist,
send signal to myself. */
pinfo pi (t->getpgid ());
if ((!pi || (pi->process_state & PID_NOTCYGWIN))
&& (!have_execed || have_execed_cygwin)
&& t->getpgid () == myself->pgid
&& type == CTRL_C_EVENT)
{
t->output_stopped = false;
sig_send(myself, SIGINT);
}
/* Ignore this if we're not the process group leader since it should be
handled *by* the process group leader. */
if (t && (!have_execed || have_execed_cygwin)
&& t->getpgid () == myself->pid &&
(GetTickCount64 () - t->last_ctrl_c) >= MIN_CTRL_C_SLOP)
/* Otherwise we just send a SIGINT to the process group and return TRUE
(to indicate that we have handled the signal). At this point, type
should be a CTRL_C_EVENT or CTRL_BREAK_EVENT. */
2000-02-18 03:38:33 +08:00
{
int sig = SIGINT;
/* If intr and quit are both mapped to ^C, send SIGQUIT on ^BREAK */
if (type == CTRL_BREAK_EVENT
&& t->ti.c_cc[VINTR] == 3 && t->ti.c_cc[VQUIT] == 3)
sig = SIGQUIT;
t->last_ctrl_c = GetTickCount64 ();
t->kill_pgrp (sig);
t->output_stopped = false;
t->last_ctrl_c = GetTickCount64 ();
2000-02-18 03:38:33 +08:00
return TRUE;
}
return TRUE;
2000-02-18 03:38:33 +08:00
}
Eliminate use of sigframe and sigthread throughout. * Makefile.in (DLL_OFILES): Add sigfe.o. Remove reliance on cygwin.def from cygwin0.dll dependency since dependence on sigfe.o implies that. Generate def file on the fly using 'gendef'. * configure.in: Don't auto-generate cygwin.def. * configure: Regenerate. * cygwin.din: Add SIGFE stuff where appropriate. * dcrt0.cc (dll_crt0_1): Initialize cygwin tls early in process startup. Set _main_tls to address of the main thread's cygwin tls. * debug.h: Remove now unneeded WFSO and WFMO declarations. * exceptions.cc (_last_thread): Define. (set_thread_state_for_signals): New function. (reset_thread_exception_for_signals): Ditto. (init_thread_for_signals): Ditto. (delete_thread_for_signals): Ditto. (capture_thread_for_signals): Ditto. (handle_exceptions): Set return address explicitly for exceptions prior to calling sig_send. (interrupt_on_return): Eliminate. (setup_handler): Add preliminary implementation for dealing with thread-specific signals by querying _main_tls. (signal_exit): Use cygthread::main_thread_id instead of mainthread.id. (call_signal_handler_now): For now, just handle the main thread. * fork.cc (vfork): Save and restore main _my_tls. * gendef: New file. Generates def file and sigfe.s file. * gentls_offsets: New file. Generates offsets for perl to use in sigfe.s. * how-signals-work.txt: Mention that info is obsolete. * init.cc (dll_entry): Initialize cygwin tls storage here. * miscfuncs.cc (low_priority_sleep): Make a C function for easier calling from asm. * perthread.h (vfork_save::tls): New element. * signal.cc (nanosleep): Replace previous use of sigframe.call_signal_handler_now with straight call to call_signal_handler_now. (abort): Ditto. * syscalls.cc (readv): Ditto. * termios.cc (tcsetattr): Ditto. * wait.cc (wait4): Ditto. * sigproc.cc (sig_dispatch_pending): Ditto. (sig_send): Ditto. * sigproc.h: Declare call_signal_handler_now. * thread.cc (pthread::thread_init_wrapper): Initialize cygwin tls. Remove obsolete and unworking signal stuff. * thread.h (verifyable_object::sigs): Eliminate. (verifyable_object::sigmask): Eliminate. (verifyable_object::sigtodo): Eliminate. (verifyable_object::exit): Make attribute noreturn. (verifyable_object::thread_init_wrapper): Ditto. (pthread_null::exit): Ditto. * winbase.h (__stackbase): Always define. * winsup.h (low_priority_sleep): Declare as a "C" function. * include/cygwin/version.h: Bump API version to reflect sigwait export. * include/sys/queue.h: Protect SLIST_ENTRY from previous declaration. * signal.cc (sigwait): Implement. * select.cc (fhandler_base::ready_for_read): Add debugging output. * devices.h: Define more device pointers via their storage. * devices.in: Don't parse things like /dev/inet/tcp, as they really have no meaning. * devices.cc: Regenerate. * gendevices: Set proper protection for output file. * cygtls.h: New file. * gendef: New file. * gentls_offsets: New file. * tlsoffsets.h: New file. Autogenerated. * config/i386/longjmp.c: Remove. File subsumed by gendef output. * config/i386/makefrag: Remove obsolete file. * fhandler.cc: Remove spurious access_worker declaration. * spawn.cc (spawnve): Make debugging output more accurate. * cygwin-gperf: Remove. * devices.cc: Remove.
2003-11-29 04:55:59 +08:00
/* Function used by low level sig wrappers. */
extern "C" void
Eliminate use of sigframe and sigthread throughout. * Makefile.in (DLL_OFILES): Add sigfe.o. Remove reliance on cygwin.def from cygwin0.dll dependency since dependence on sigfe.o implies that. Generate def file on the fly using 'gendef'. * configure.in: Don't auto-generate cygwin.def. * configure: Regenerate. * cygwin.din: Add SIGFE stuff where appropriate. * dcrt0.cc (dll_crt0_1): Initialize cygwin tls early in process startup. Set _main_tls to address of the main thread's cygwin tls. * debug.h: Remove now unneeded WFSO and WFMO declarations. * exceptions.cc (_last_thread): Define. (set_thread_state_for_signals): New function. (reset_thread_exception_for_signals): Ditto. (init_thread_for_signals): Ditto. (delete_thread_for_signals): Ditto. (capture_thread_for_signals): Ditto. (handle_exceptions): Set return address explicitly for exceptions prior to calling sig_send. (interrupt_on_return): Eliminate. (setup_handler): Add preliminary implementation for dealing with thread-specific signals by querying _main_tls. (signal_exit): Use cygthread::main_thread_id instead of mainthread.id. (call_signal_handler_now): For now, just handle the main thread. * fork.cc (vfork): Save and restore main _my_tls. * gendef: New file. Generates def file and sigfe.s file. * gentls_offsets: New file. Generates offsets for perl to use in sigfe.s. * how-signals-work.txt: Mention that info is obsolete. * init.cc (dll_entry): Initialize cygwin tls storage here. * miscfuncs.cc (low_priority_sleep): Make a C function for easier calling from asm. * perthread.h (vfork_save::tls): New element. * signal.cc (nanosleep): Replace previous use of sigframe.call_signal_handler_now with straight call to call_signal_handler_now. (abort): Ditto. * syscalls.cc (readv): Ditto. * termios.cc (tcsetattr): Ditto. * wait.cc (wait4): Ditto. * sigproc.cc (sig_dispatch_pending): Ditto. (sig_send): Ditto. * sigproc.h: Declare call_signal_handler_now. * thread.cc (pthread::thread_init_wrapper): Initialize cygwin tls. Remove obsolete and unworking signal stuff. * thread.h (verifyable_object::sigs): Eliminate. (verifyable_object::sigmask): Eliminate. (verifyable_object::sigtodo): Eliminate. (verifyable_object::exit): Make attribute noreturn. (verifyable_object::thread_init_wrapper): Ditto. (pthread_null::exit): Ditto. * winbase.h (__stackbase): Always define. * winsup.h (low_priority_sleep): Declare as a "C" function. * include/cygwin/version.h: Bump API version to reflect sigwait export. * include/sys/queue.h: Protect SLIST_ENTRY from previous declaration. * signal.cc (sigwait): Implement. * select.cc (fhandler_base::ready_for_read): Add debugging output. * devices.h: Define more device pointers via their storage. * devices.in: Don't parse things like /dev/inet/tcp, as they really have no meaning. * devices.cc: Regenerate. * gendevices: Set proper protection for output file. * cygtls.h: New file. * gendef: New file. * gentls_offsets: New file. * tlsoffsets.h: New file. Autogenerated. * config/i386/longjmp.c: Remove. File subsumed by gendef output. * config/i386/makefrag: Remove obsolete file. * fhandler.cc: Remove spurious access_worker declaration. * spawn.cc (spawnve): Make debugging output more accurate. * cygwin-gperf: Remove. * devices.cc: Remove.
2003-11-29 04:55:59 +08:00
set_process_mask (sigset_t newmask)
{
* DevNotes: Add entry cgf-000013. * cygserver_ipc.h (ipc_set_proc_info): Use _cygtls::ipc_set_proc_info to set per-thread signal arrived value. * cygthread.cc (cygthread::detach): Use per-thread signal_arrived via set_thread_waiting. * fork.cc (_cygtls::fixup_after_fork): Clear signal_arrived. (_cygtls::remove): Close any signal_arrived handle when thread exists. (_cygtls::find_tls): Remove unneeded function. * cygtls.h: Update copyright. (class _cygtls): Reorganize to help avoid rebuilding newlib when structure changes. (_cygtls::event): Delete. (_cygtls::threadkill): Ditto. (_cygtls::signal_waiting): Declare new bool. (_cygtls::find_tls): Delete declaration. (_cygtls::set_threadkill): Ditto. (_cygtls::reset_threadkill): Ditto. (_cygtls::set_signal_arrived): Declare new function. (class set_thread_waiting): Declare new class. * cygwait.cc (cw_nowait_storage): Define. (cygwait): Set per-thread signal_arrived via set_thread_waiting. Don't special-case _main_tls. * cygwait.h (cw_nowait): Define. (cw_infinite): Ditto. (cygwait): Redefine pathological wait-only case. * dcrt0.cc (dll_crt0_0): Remove call to now-defunct events_init(). (dll_crt0_1): Remove call to now-defunct create_signal_arrived(). * exceptions.cc: Reflect set_signal_mask() argument reordering throughout. Remove signal mask synchronization throughout. (events_init): Delete definition. (mask_sync): Delete now-unneeded mask synchronization. (set_signal_mask): Reverse order of arguments to "standard" to, from layout. Rename "newmask" argument to "setmask". Remove debugging. (sig_handle_tty_stop): Use cancelable_wait rather than WFMO. (_cygtls::interrupt_setup): Don't treat "threadkill" events specially. Conditionally set signal_arrived depending on whether the thread has created it or not. (sigpacket::process): Reorganize to reflect thread-specific sending of signals which is more in line with the way it was actually supposed to work. * fhandler_socket.cc (get_inet_addr): Use cancelable_wait rather than IsEventSignalled to avoid potential race. (fhandler_socket::wait_for_events): Set signal_arrived event using set_thread_waiting(). (fhandler_socket::close): Use cygwait for the case of just waiting 10 ms for a signal. * fhandler_tape.cc (fhandler_dev_tape::_lock): Use cancelable_wait rather than WFMO. Redo switch/case tests accordingly. * fhandler_termios.cc (fhandler_termios::bg_check): Use cygwait for case of just waiting 0 ms for a potential signal. * fhandler_tty.cc (fhandler_pty_master::process_slave_output): Use cancelable_wait rather than WFSO. * fhandler_windows.cc (fhandler_windows::read): Set per-thread signal_arrived via set_thread_waiting(). * flock.cc (lf_setlock): Ditto. * select.cc (pselect): Ditto. Set per-thread signal_arrived using set_thread_waiting(). * gendef: Don't special case handling of _cygtls::sig for threads. * gentls_offsets: Use #pragma once in tlsoffsets.h. * ntdll.h: Use #pragma once. * poll.cc: Reflect set_signal_mask() argument reordering. * posix_ipc.cc (ipc_mutex_lock): Use cancelable_wait rather than WFMO. (ipc_cond_timedwait): Set perl-thread signal arrived using set_thread_waiting(). * security.h: Use #pragma once. * signal.cc (abort): Reflect set_signal_mask() argument reordering. (clock_nanosleep): Ditto. Change call to cancelable_wait to properly specify handling of cancel and interrupt. (sigwaitinfo): Remove handling of per-thread event in favor of per-thread signal_arrived. Use cancelable_wait rather than WFSO. * sigproc.cc (signal_arrived): Delete definition. (create_signal_arrived): Ditto. * sigproc.h (signal_arrived): Delete declaration. (set_signal_mask): Avoid defining as a "C" function. Don't conditionally declare. (create_signal_arrived): Delete declaration. * syscalls.cc (rename): Use cygwait() rather than WFSO. * thread.h (fast_mutex::lock): Use cw_infinite rather than LARGE_NULL. * wait.cc (wait4): Ditto. * thread.cc (pthread_mutex::lock): Ditto. (pthread::join): Ditto. (semaphore::_wait): Ditto. (pthread_kill): Remove set_threadkill() accommodation. * tlsoffsets.h: Regenerate.
2012-07-22 06:58:20 +08:00
set_signal_mask (_my_tls.sigmask, newmask);
Eliminate use of sigframe and sigthread throughout. * Makefile.in (DLL_OFILES): Add sigfe.o. Remove reliance on cygwin.def from cygwin0.dll dependency since dependence on sigfe.o implies that. Generate def file on the fly using 'gendef'. * configure.in: Don't auto-generate cygwin.def. * configure: Regenerate. * cygwin.din: Add SIGFE stuff where appropriate. * dcrt0.cc (dll_crt0_1): Initialize cygwin tls early in process startup. Set _main_tls to address of the main thread's cygwin tls. * debug.h: Remove now unneeded WFSO and WFMO declarations. * exceptions.cc (_last_thread): Define. (set_thread_state_for_signals): New function. (reset_thread_exception_for_signals): Ditto. (init_thread_for_signals): Ditto. (delete_thread_for_signals): Ditto. (capture_thread_for_signals): Ditto. (handle_exceptions): Set return address explicitly for exceptions prior to calling sig_send. (interrupt_on_return): Eliminate. (setup_handler): Add preliminary implementation for dealing with thread-specific signals by querying _main_tls. (signal_exit): Use cygthread::main_thread_id instead of mainthread.id. (call_signal_handler_now): For now, just handle the main thread. * fork.cc (vfork): Save and restore main _my_tls. * gendef: New file. Generates def file and sigfe.s file. * gentls_offsets: New file. Generates offsets for perl to use in sigfe.s. * how-signals-work.txt: Mention that info is obsolete. * init.cc (dll_entry): Initialize cygwin tls storage here. * miscfuncs.cc (low_priority_sleep): Make a C function for easier calling from asm. * perthread.h (vfork_save::tls): New element. * signal.cc (nanosleep): Replace previous use of sigframe.call_signal_handler_now with straight call to call_signal_handler_now. (abort): Ditto. * syscalls.cc (readv): Ditto. * termios.cc (tcsetattr): Ditto. * wait.cc (wait4): Ditto. * sigproc.cc (sig_dispatch_pending): Ditto. (sig_send): Ditto. * sigproc.h: Declare call_signal_handler_now. * thread.cc (pthread::thread_init_wrapper): Initialize cygwin tls. Remove obsolete and unworking signal stuff. * thread.h (verifyable_object::sigs): Eliminate. (verifyable_object::sigmask): Eliminate. (verifyable_object::sigtodo): Eliminate. (verifyable_object::exit): Make attribute noreturn. (verifyable_object::thread_init_wrapper): Ditto. (pthread_null::exit): Ditto. * winbase.h (__stackbase): Always define. * winsup.h (low_priority_sleep): Declare as a "C" function. * include/cygwin/version.h: Bump API version to reflect sigwait export. * include/sys/queue.h: Protect SLIST_ENTRY from previous declaration. * signal.cc (sigwait): Implement. * select.cc (fhandler_base::ready_for_read): Add debugging output. * devices.h: Define more device pointers via their storage. * devices.in: Don't parse things like /dev/inet/tcp, as they really have no meaning. * devices.cc: Regenerate. * gendevices: Set proper protection for output file. * cygtls.h: New file. * gendef: New file. * gentls_offsets: New file. * tlsoffsets.h: New file. Autogenerated. * config/i386/longjmp.c: Remove. File subsumed by gendef output. * config/i386/makefrag: Remove obsolete file. * fhandler.cc: Remove spurious access_worker declaration. * spawn.cc (spawnve): Make debugging output more accurate. * cygwin-gperf: Remove. * devices.cc: Remove.
2003-11-29 04:55:59 +08:00
}
extern "C" int
sighold (int sig)
{
/* check that sig is in right range */
if (sig < 0 || sig >= _NSIG)
{
set_errno (EINVAL);
syscall_printf ("signal %d out of range", sig);
return -1;
}
sigset_t mask = _my_tls.sigmask;
sigaddset (&mask, sig);
* DevNotes: Add entry cgf-000013. * cygserver_ipc.h (ipc_set_proc_info): Use _cygtls::ipc_set_proc_info to set per-thread signal arrived value. * cygthread.cc (cygthread::detach): Use per-thread signal_arrived via set_thread_waiting. * fork.cc (_cygtls::fixup_after_fork): Clear signal_arrived. (_cygtls::remove): Close any signal_arrived handle when thread exists. (_cygtls::find_tls): Remove unneeded function. * cygtls.h: Update copyright. (class _cygtls): Reorganize to help avoid rebuilding newlib when structure changes. (_cygtls::event): Delete. (_cygtls::threadkill): Ditto. (_cygtls::signal_waiting): Declare new bool. (_cygtls::find_tls): Delete declaration. (_cygtls::set_threadkill): Ditto. (_cygtls::reset_threadkill): Ditto. (_cygtls::set_signal_arrived): Declare new function. (class set_thread_waiting): Declare new class. * cygwait.cc (cw_nowait_storage): Define. (cygwait): Set per-thread signal_arrived via set_thread_waiting. Don't special-case _main_tls. * cygwait.h (cw_nowait): Define. (cw_infinite): Ditto. (cygwait): Redefine pathological wait-only case. * dcrt0.cc (dll_crt0_0): Remove call to now-defunct events_init(). (dll_crt0_1): Remove call to now-defunct create_signal_arrived(). * exceptions.cc: Reflect set_signal_mask() argument reordering throughout. Remove signal mask synchronization throughout. (events_init): Delete definition. (mask_sync): Delete now-unneeded mask synchronization. (set_signal_mask): Reverse order of arguments to "standard" to, from layout. Rename "newmask" argument to "setmask". Remove debugging. (sig_handle_tty_stop): Use cancelable_wait rather than WFMO. (_cygtls::interrupt_setup): Don't treat "threadkill" events specially. Conditionally set signal_arrived depending on whether the thread has created it or not. (sigpacket::process): Reorganize to reflect thread-specific sending of signals which is more in line with the way it was actually supposed to work. * fhandler_socket.cc (get_inet_addr): Use cancelable_wait rather than IsEventSignalled to avoid potential race. (fhandler_socket::wait_for_events): Set signal_arrived event using set_thread_waiting(). (fhandler_socket::close): Use cygwait for the case of just waiting 10 ms for a signal. * fhandler_tape.cc (fhandler_dev_tape::_lock): Use cancelable_wait rather than WFMO. Redo switch/case tests accordingly. * fhandler_termios.cc (fhandler_termios::bg_check): Use cygwait for case of just waiting 0 ms for a potential signal. * fhandler_tty.cc (fhandler_pty_master::process_slave_output): Use cancelable_wait rather than WFSO. * fhandler_windows.cc (fhandler_windows::read): Set per-thread signal_arrived via set_thread_waiting(). * flock.cc (lf_setlock): Ditto. * select.cc (pselect): Ditto. Set per-thread signal_arrived using set_thread_waiting(). * gendef: Don't special case handling of _cygtls::sig for threads. * gentls_offsets: Use #pragma once in tlsoffsets.h. * ntdll.h: Use #pragma once. * poll.cc: Reflect set_signal_mask() argument reordering. * posix_ipc.cc (ipc_mutex_lock): Use cancelable_wait rather than WFMO. (ipc_cond_timedwait): Set perl-thread signal arrived using set_thread_waiting(). * security.h: Use #pragma once. * signal.cc (abort): Reflect set_signal_mask() argument reordering. (clock_nanosleep): Ditto. Change call to cancelable_wait to properly specify handling of cancel and interrupt. (sigwaitinfo): Remove handling of per-thread event in favor of per-thread signal_arrived. Use cancelable_wait rather than WFSO. * sigproc.cc (signal_arrived): Delete definition. (create_signal_arrived): Ditto. * sigproc.h (signal_arrived): Delete declaration. (set_signal_mask): Avoid defining as a "C" function. Don't conditionally declare. (create_signal_arrived): Delete declaration. * syscalls.cc (rename): Use cygwait() rather than WFSO. * thread.h (fast_mutex::lock): Use cw_infinite rather than LARGE_NULL. * wait.cc (wait4): Ditto. * thread.cc (pthread_mutex::lock): Ditto. (pthread::join): Ditto. (semaphore::_wait): Ditto. (pthread_kill): Remove set_threadkill() accommodation. * tlsoffsets.h: Regenerate.
2012-07-22 06:58:20 +08:00
set_signal_mask (_my_tls.sigmask, mask);
return 0;
}
extern "C" int
sigrelse (int sig)
{
/* check that sig is in right range */
if (sig < 0 || sig >= _NSIG)
{
set_errno (EINVAL);
syscall_printf ("signal %d out of range", sig);
return -1;
}
sigset_t mask = _my_tls.sigmask;
sigdelset (&mask, sig);
* DevNotes: Add entry cgf-000013. * cygserver_ipc.h (ipc_set_proc_info): Use _cygtls::ipc_set_proc_info to set per-thread signal arrived value. * cygthread.cc (cygthread::detach): Use per-thread signal_arrived via set_thread_waiting. * fork.cc (_cygtls::fixup_after_fork): Clear signal_arrived. (_cygtls::remove): Close any signal_arrived handle when thread exists. (_cygtls::find_tls): Remove unneeded function. * cygtls.h: Update copyright. (class _cygtls): Reorganize to help avoid rebuilding newlib when structure changes. (_cygtls::event): Delete. (_cygtls::threadkill): Ditto. (_cygtls::signal_waiting): Declare new bool. (_cygtls::find_tls): Delete declaration. (_cygtls::set_threadkill): Ditto. (_cygtls::reset_threadkill): Ditto. (_cygtls::set_signal_arrived): Declare new function. (class set_thread_waiting): Declare new class. * cygwait.cc (cw_nowait_storage): Define. (cygwait): Set per-thread signal_arrived via set_thread_waiting. Don't special-case _main_tls. * cygwait.h (cw_nowait): Define. (cw_infinite): Ditto. (cygwait): Redefine pathological wait-only case. * dcrt0.cc (dll_crt0_0): Remove call to now-defunct events_init(). (dll_crt0_1): Remove call to now-defunct create_signal_arrived(). * exceptions.cc: Reflect set_signal_mask() argument reordering throughout. Remove signal mask synchronization throughout. (events_init): Delete definition. (mask_sync): Delete now-unneeded mask synchronization. (set_signal_mask): Reverse order of arguments to "standard" to, from layout. Rename "newmask" argument to "setmask". Remove debugging. (sig_handle_tty_stop): Use cancelable_wait rather than WFMO. (_cygtls::interrupt_setup): Don't treat "threadkill" events specially. Conditionally set signal_arrived depending on whether the thread has created it or not. (sigpacket::process): Reorganize to reflect thread-specific sending of signals which is more in line with the way it was actually supposed to work. * fhandler_socket.cc (get_inet_addr): Use cancelable_wait rather than IsEventSignalled to avoid potential race. (fhandler_socket::wait_for_events): Set signal_arrived event using set_thread_waiting(). (fhandler_socket::close): Use cygwait for the case of just waiting 10 ms for a signal. * fhandler_tape.cc (fhandler_dev_tape::_lock): Use cancelable_wait rather than WFMO. Redo switch/case tests accordingly. * fhandler_termios.cc (fhandler_termios::bg_check): Use cygwait for case of just waiting 0 ms for a potential signal. * fhandler_tty.cc (fhandler_pty_master::process_slave_output): Use cancelable_wait rather than WFSO. * fhandler_windows.cc (fhandler_windows::read): Set per-thread signal_arrived via set_thread_waiting(). * flock.cc (lf_setlock): Ditto. * select.cc (pselect): Ditto. Set per-thread signal_arrived using set_thread_waiting(). * gendef: Don't special case handling of _cygtls::sig for threads. * gentls_offsets: Use #pragma once in tlsoffsets.h. * ntdll.h: Use #pragma once. * poll.cc: Reflect set_signal_mask() argument reordering. * posix_ipc.cc (ipc_mutex_lock): Use cancelable_wait rather than WFMO. (ipc_cond_timedwait): Set perl-thread signal arrived using set_thread_waiting(). * security.h: Use #pragma once. * signal.cc (abort): Reflect set_signal_mask() argument reordering. (clock_nanosleep): Ditto. Change call to cancelable_wait to properly specify handling of cancel and interrupt. (sigwaitinfo): Remove handling of per-thread event in favor of per-thread signal_arrived. Use cancelable_wait rather than WFSO. * sigproc.cc (signal_arrived): Delete definition. (create_signal_arrived): Ditto. * sigproc.h (signal_arrived): Delete declaration. (set_signal_mask): Avoid defining as a "C" function. Don't conditionally declare. (create_signal_arrived): Delete declaration. * syscalls.cc (rename): Use cygwait() rather than WFSO. * thread.h (fast_mutex::lock): Use cw_infinite rather than LARGE_NULL. * wait.cc (wait4): Ditto. * thread.cc (pthread_mutex::lock): Ditto. (pthread::join): Ditto. (semaphore::_wait): Ditto. (pthread_kill): Remove set_threadkill() accommodation. * tlsoffsets.h: Regenerate.
2012-07-22 06:58:20 +08:00
set_signal_mask (_my_tls.sigmask, mask);
return 0;
}
extern "C" _sig_func_ptr
sigset (int sig, _sig_func_ptr func)
{
sig_dispatch_pending ();
_sig_func_ptr prev;
/* check that sig is in right range */
if (sig < 0 || sig >= _NSIG || sig == SIGKILL || sig == SIGSTOP)
{
set_errno (EINVAL);
syscall_printf ("SIG_ERR = sigset (%d, %p)", sig, func);
return (_sig_func_ptr) SIG_ERR;
}
sigset_t mask = _my_tls.sigmask;
/* If sig was in the signal mask return SIG_HOLD, otherwise return the
previous disposition. */
if (sigismember (&mask, sig))
prev = SIG_HOLD;
else
prev = global_sigs[sig].sa_handler;
/* If func is SIG_HOLD, add sig to the signal mask, otherwise set the
disposition to func and remove sig from the signal mask. */
if (func == SIG_HOLD)
sigaddset (&mask, sig);
else
{
/* No error checking. The test which could return SIG_ERR has already
2006-05-28 23:50:14 +08:00
been made above. */
signal (sig, func);
sigdelset (&mask, sig);
}
* DevNotes: Add entry cgf-000013. * cygserver_ipc.h (ipc_set_proc_info): Use _cygtls::ipc_set_proc_info to set per-thread signal arrived value. * cygthread.cc (cygthread::detach): Use per-thread signal_arrived via set_thread_waiting. * fork.cc (_cygtls::fixup_after_fork): Clear signal_arrived. (_cygtls::remove): Close any signal_arrived handle when thread exists. (_cygtls::find_tls): Remove unneeded function. * cygtls.h: Update copyright. (class _cygtls): Reorganize to help avoid rebuilding newlib when structure changes. (_cygtls::event): Delete. (_cygtls::threadkill): Ditto. (_cygtls::signal_waiting): Declare new bool. (_cygtls::find_tls): Delete declaration. (_cygtls::set_threadkill): Ditto. (_cygtls::reset_threadkill): Ditto. (_cygtls::set_signal_arrived): Declare new function. (class set_thread_waiting): Declare new class. * cygwait.cc (cw_nowait_storage): Define. (cygwait): Set per-thread signal_arrived via set_thread_waiting. Don't special-case _main_tls. * cygwait.h (cw_nowait): Define. (cw_infinite): Ditto. (cygwait): Redefine pathological wait-only case. * dcrt0.cc (dll_crt0_0): Remove call to now-defunct events_init(). (dll_crt0_1): Remove call to now-defunct create_signal_arrived(). * exceptions.cc: Reflect set_signal_mask() argument reordering throughout. Remove signal mask synchronization throughout. (events_init): Delete definition. (mask_sync): Delete now-unneeded mask synchronization. (set_signal_mask): Reverse order of arguments to "standard" to, from layout. Rename "newmask" argument to "setmask". Remove debugging. (sig_handle_tty_stop): Use cancelable_wait rather than WFMO. (_cygtls::interrupt_setup): Don't treat "threadkill" events specially. Conditionally set signal_arrived depending on whether the thread has created it or not. (sigpacket::process): Reorganize to reflect thread-specific sending of signals which is more in line with the way it was actually supposed to work. * fhandler_socket.cc (get_inet_addr): Use cancelable_wait rather than IsEventSignalled to avoid potential race. (fhandler_socket::wait_for_events): Set signal_arrived event using set_thread_waiting(). (fhandler_socket::close): Use cygwait for the case of just waiting 10 ms for a signal. * fhandler_tape.cc (fhandler_dev_tape::_lock): Use cancelable_wait rather than WFMO. Redo switch/case tests accordingly. * fhandler_termios.cc (fhandler_termios::bg_check): Use cygwait for case of just waiting 0 ms for a potential signal. * fhandler_tty.cc (fhandler_pty_master::process_slave_output): Use cancelable_wait rather than WFSO. * fhandler_windows.cc (fhandler_windows::read): Set per-thread signal_arrived via set_thread_waiting(). * flock.cc (lf_setlock): Ditto. * select.cc (pselect): Ditto. Set per-thread signal_arrived using set_thread_waiting(). * gendef: Don't special case handling of _cygtls::sig for threads. * gentls_offsets: Use #pragma once in tlsoffsets.h. * ntdll.h: Use #pragma once. * poll.cc: Reflect set_signal_mask() argument reordering. * posix_ipc.cc (ipc_mutex_lock): Use cancelable_wait rather than WFMO. (ipc_cond_timedwait): Set perl-thread signal arrived using set_thread_waiting(). * security.h: Use #pragma once. * signal.cc (abort): Reflect set_signal_mask() argument reordering. (clock_nanosleep): Ditto. Change call to cancelable_wait to properly specify handling of cancel and interrupt. (sigwaitinfo): Remove handling of per-thread event in favor of per-thread signal_arrived. Use cancelable_wait rather than WFSO. * sigproc.cc (signal_arrived): Delete definition. (create_signal_arrived): Ditto. * sigproc.h (signal_arrived): Delete declaration. (set_signal_mask): Avoid defining as a "C" function. Don't conditionally declare. (create_signal_arrived): Delete declaration. * syscalls.cc (rename): Use cygwait() rather than WFSO. * thread.h (fast_mutex::lock): Use cw_infinite rather than LARGE_NULL. * wait.cc (wait4): Ditto. * thread.cc (pthread_mutex::lock): Ditto. (pthread::join): Ditto. (semaphore::_wait): Ditto. (pthread_kill): Remove set_threadkill() accommodation. * tlsoffsets.h: Regenerate.
2012-07-22 06:58:20 +08:00
set_signal_mask (_my_tls.sigmask, mask);
return prev;
}
extern "C" int
sigignore (int sig)
{
return sigset (sig, SIG_IGN) == SIG_ERR ? -1 : 0;
}
/* Update the signal mask for this process and return the old mask.
Called from call_signal_handler */
extern "C" sigset_t
set_process_mask_delta ()
{
sigset_t newmask, oldmask;
if (_my_tls.deltamask & SIG_NONMASKABLE)
oldmask = _my_tls.oldmask; /* from handle_sigsuspend */
else
oldmask = _my_tls.sigmask;
newmask = (oldmask | _my_tls.deltamask) & ~SIG_NONMASKABLE;
2013-04-23 17:44:36 +08:00
sigproc_printf ("oldmask %lx, newmask %lx, deltamask %lx", oldmask, newmask,
_my_tls.deltamask);
_my_tls.sigmask = newmask;
return oldmask;
}
2000-02-18 03:38:33 +08:00
/* Set the signal mask for this process.
Note that some signals are unmaskable, as in UNIX. */
* DevNotes: Add entry cgf-000013. * cygserver_ipc.h (ipc_set_proc_info): Use _cygtls::ipc_set_proc_info to set per-thread signal arrived value. * cygthread.cc (cygthread::detach): Use per-thread signal_arrived via set_thread_waiting. * fork.cc (_cygtls::fixup_after_fork): Clear signal_arrived. (_cygtls::remove): Close any signal_arrived handle when thread exists. (_cygtls::find_tls): Remove unneeded function. * cygtls.h: Update copyright. (class _cygtls): Reorganize to help avoid rebuilding newlib when structure changes. (_cygtls::event): Delete. (_cygtls::threadkill): Ditto. (_cygtls::signal_waiting): Declare new bool. (_cygtls::find_tls): Delete declaration. (_cygtls::set_threadkill): Ditto. (_cygtls::reset_threadkill): Ditto. (_cygtls::set_signal_arrived): Declare new function. (class set_thread_waiting): Declare new class. * cygwait.cc (cw_nowait_storage): Define. (cygwait): Set per-thread signal_arrived via set_thread_waiting. Don't special-case _main_tls. * cygwait.h (cw_nowait): Define. (cw_infinite): Ditto. (cygwait): Redefine pathological wait-only case. * dcrt0.cc (dll_crt0_0): Remove call to now-defunct events_init(). (dll_crt0_1): Remove call to now-defunct create_signal_arrived(). * exceptions.cc: Reflect set_signal_mask() argument reordering throughout. Remove signal mask synchronization throughout. (events_init): Delete definition. (mask_sync): Delete now-unneeded mask synchronization. (set_signal_mask): Reverse order of arguments to "standard" to, from layout. Rename "newmask" argument to "setmask". Remove debugging. (sig_handle_tty_stop): Use cancelable_wait rather than WFMO. (_cygtls::interrupt_setup): Don't treat "threadkill" events specially. Conditionally set signal_arrived depending on whether the thread has created it or not. (sigpacket::process): Reorganize to reflect thread-specific sending of signals which is more in line with the way it was actually supposed to work. * fhandler_socket.cc (get_inet_addr): Use cancelable_wait rather than IsEventSignalled to avoid potential race. (fhandler_socket::wait_for_events): Set signal_arrived event using set_thread_waiting(). (fhandler_socket::close): Use cygwait for the case of just waiting 10 ms for a signal. * fhandler_tape.cc (fhandler_dev_tape::_lock): Use cancelable_wait rather than WFMO. Redo switch/case tests accordingly. * fhandler_termios.cc (fhandler_termios::bg_check): Use cygwait for case of just waiting 0 ms for a potential signal. * fhandler_tty.cc (fhandler_pty_master::process_slave_output): Use cancelable_wait rather than WFSO. * fhandler_windows.cc (fhandler_windows::read): Set per-thread signal_arrived via set_thread_waiting(). * flock.cc (lf_setlock): Ditto. * select.cc (pselect): Ditto. Set per-thread signal_arrived using set_thread_waiting(). * gendef: Don't special case handling of _cygtls::sig for threads. * gentls_offsets: Use #pragma once in tlsoffsets.h. * ntdll.h: Use #pragma once. * poll.cc: Reflect set_signal_mask() argument reordering. * posix_ipc.cc (ipc_mutex_lock): Use cancelable_wait rather than WFMO. (ipc_cond_timedwait): Set perl-thread signal arrived using set_thread_waiting(). * security.h: Use #pragma once. * signal.cc (abort): Reflect set_signal_mask() argument reordering. (clock_nanosleep): Ditto. Change call to cancelable_wait to properly specify handling of cancel and interrupt. (sigwaitinfo): Remove handling of per-thread event in favor of per-thread signal_arrived. Use cancelable_wait rather than WFSO. * sigproc.cc (signal_arrived): Delete definition. (create_signal_arrived): Ditto. * sigproc.h (signal_arrived): Delete declaration. (set_signal_mask): Avoid defining as a "C" function. Don't conditionally declare. (create_signal_arrived): Delete declaration. * syscalls.cc (rename): Use cygwait() rather than WFSO. * thread.h (fast_mutex::lock): Use cw_infinite rather than LARGE_NULL. * wait.cc (wait4): Ditto. * thread.cc (pthread_mutex::lock): Ditto. (pthread::join): Ditto. (semaphore::_wait): Ditto. (pthread_kill): Remove set_threadkill() accommodation. * tlsoffsets.h: Regenerate.
2012-07-22 06:58:20 +08:00
void
set_signal_mask (sigset_t& setmask, sigset_t newmask)
2000-02-18 03:38:33 +08:00
{
newmask &= ~SIG_NONMASKABLE;
* DevNotes: Add entry cgf-000013. * cygserver_ipc.h (ipc_set_proc_info): Use _cygtls::ipc_set_proc_info to set per-thread signal arrived value. * cygthread.cc (cygthread::detach): Use per-thread signal_arrived via set_thread_waiting. * fork.cc (_cygtls::fixup_after_fork): Clear signal_arrived. (_cygtls::remove): Close any signal_arrived handle when thread exists. (_cygtls::find_tls): Remove unneeded function. * cygtls.h: Update copyright. (class _cygtls): Reorganize to help avoid rebuilding newlib when structure changes. (_cygtls::event): Delete. (_cygtls::threadkill): Ditto. (_cygtls::signal_waiting): Declare new bool. (_cygtls::find_tls): Delete declaration. (_cygtls::set_threadkill): Ditto. (_cygtls::reset_threadkill): Ditto. (_cygtls::set_signal_arrived): Declare new function. (class set_thread_waiting): Declare new class. * cygwait.cc (cw_nowait_storage): Define. (cygwait): Set per-thread signal_arrived via set_thread_waiting. Don't special-case _main_tls. * cygwait.h (cw_nowait): Define. (cw_infinite): Ditto. (cygwait): Redefine pathological wait-only case. * dcrt0.cc (dll_crt0_0): Remove call to now-defunct events_init(). (dll_crt0_1): Remove call to now-defunct create_signal_arrived(). * exceptions.cc: Reflect set_signal_mask() argument reordering throughout. Remove signal mask synchronization throughout. (events_init): Delete definition. (mask_sync): Delete now-unneeded mask synchronization. (set_signal_mask): Reverse order of arguments to "standard" to, from layout. Rename "newmask" argument to "setmask". Remove debugging. (sig_handle_tty_stop): Use cancelable_wait rather than WFMO. (_cygtls::interrupt_setup): Don't treat "threadkill" events specially. Conditionally set signal_arrived depending on whether the thread has created it or not. (sigpacket::process): Reorganize to reflect thread-specific sending of signals which is more in line with the way it was actually supposed to work. * fhandler_socket.cc (get_inet_addr): Use cancelable_wait rather than IsEventSignalled to avoid potential race. (fhandler_socket::wait_for_events): Set signal_arrived event using set_thread_waiting(). (fhandler_socket::close): Use cygwait for the case of just waiting 10 ms for a signal. * fhandler_tape.cc (fhandler_dev_tape::_lock): Use cancelable_wait rather than WFMO. Redo switch/case tests accordingly. * fhandler_termios.cc (fhandler_termios::bg_check): Use cygwait for case of just waiting 0 ms for a potential signal. * fhandler_tty.cc (fhandler_pty_master::process_slave_output): Use cancelable_wait rather than WFSO. * fhandler_windows.cc (fhandler_windows::read): Set per-thread signal_arrived via set_thread_waiting(). * flock.cc (lf_setlock): Ditto. * select.cc (pselect): Ditto. Set per-thread signal_arrived using set_thread_waiting(). * gendef: Don't special case handling of _cygtls::sig for threads. * gentls_offsets: Use #pragma once in tlsoffsets.h. * ntdll.h: Use #pragma once. * poll.cc: Reflect set_signal_mask() argument reordering. * posix_ipc.cc (ipc_mutex_lock): Use cancelable_wait rather than WFMO. (ipc_cond_timedwait): Set perl-thread signal arrived using set_thread_waiting(). * security.h: Use #pragma once. * signal.cc (abort): Reflect set_signal_mask() argument reordering. (clock_nanosleep): Ditto. Change call to cancelable_wait to properly specify handling of cancel and interrupt. (sigwaitinfo): Remove handling of per-thread event in favor of per-thread signal_arrived. Use cancelable_wait rather than WFSO. * sigproc.cc (signal_arrived): Delete definition. (create_signal_arrived): Ditto. * sigproc.h (signal_arrived): Delete declaration. (set_signal_mask): Avoid defining as a "C" function. Don't conditionally declare. (create_signal_arrived): Delete declaration. * syscalls.cc (rename): Use cygwait() rather than WFSO. * thread.h (fast_mutex::lock): Use cw_infinite rather than LARGE_NULL. * wait.cc (wait4): Ditto. * thread.cc (pthread_mutex::lock): Ditto. (pthread::join): Ditto. (semaphore::_wait): Ditto. (pthread_kill): Remove set_threadkill() accommodation. * tlsoffsets.h: Regenerate.
2012-07-22 06:58:20 +08:00
sigset_t mask_bits = setmask & ~newmask;
2013-04-23 17:44:36 +08:00
sigproc_printf ("setmask %lx, newmask %lx, mask_bits %lx", setmask, newmask,
* exceptions.cc (set_signal_mask): Redefine to not pass by address. Report calculated mask in debugging output. * sigproc.h (set_signal_mask): Reflect above change in declaration. * path.cc (mount_item::build_win32): Take path apart before feeding it to fnmunge. Throughout, change use of _reent_winsup()-> to _my_tls.locals. instead. Throughout, remove obsolete MT_SAFE/_CYG_THREAD_FAILSAFE considerations. Througout, add cygtls.h include. * Makefile.in (DLL_OFILES): Add cygtls.o. Add some more objects to the -fomit-frame-pointer list. * acconfig.h: Remove obsolete settings. * config.h.in: Ditto. * bsdlib.cc: Add cygtls.h include. * configure.in: Remove --enable-extra-threadsafe-checking. * configure: Regenerate. * cygtls.h (_local_storage): New struct renamed from _winsup_t (sic). (_threadinfo:local_clib): Add new field. (_threadinfo::locals): Ditto. (_threadinfo::init_thread): Accept second _reent * argument. (_threadinfo::call): Define as regparm. (CYGTLS_PADSIZE): Remove unnecessary slop. (_getreent): Define as a macro. * thread.h: Remove _CYG_THREAD_FAILSAFE and MT_SAFE stuff. (_winsup_t): Move to cygtls.h. (ResourceLocks::ResourceLocks): Eliminate empty constructor. (MTinterface::reents): Eliminate. (MTinterface::thread_self_key): Eliminate. (MTinterface::MTinterface): Eliminate. * dcrt0.cc: Include stdio.h for _impure_ptr initialization. (do_global_ctors): Remove run_ctors_p (sic) considerations. Don't call atexit here. (__main): Initialize destructors for user here. (dll_crt0_1): Accept a dummy argument. Don't call init_thread here. Don't set _impure_ptr here. Call do_global_ctors after more things have been initialized. (_dll_crt0): Define zeros buffer as max of needed size of CYGTLS_PADSIZE so that it can be used for two purposes while minimizing stack usage. Initialize _impure_ptr specifically, for speed. Call dll_crt0_1 with buffer argument. (cygwin_dll_init): Call dll_crt0_1 with dummy argument. * dtable.cc (dtable::find_unused_handle): Remove call to AssertResourceOwner. * exceptions.cc: Move _threadinfo stuff to new file. * cygtls.cc: New file. * gentls_offsets: Accommodate increasing complexity of cygtls.h. * hires.h (hires_base::~hires_base): Remove. * init.cc (dll_entry): Remove setting of reents. * thread.cc: Remove syslog.h include. (__getreent): Simplify to use _my_tls. (_reent_winsup): Delete. (AssertResourceOwner): Delete. (MTinterface::Init): Remove setting of _clib and _winsup, with all that entails. (MTinterface::fixup_after_fork): Ditto. (pthread::thread_init_wrapper): Ditto. Also remove call to set_tls_self_pointer. (pthread::set_tls_self_pointer): Eliminate. (pthread::get_tls_self_pointer): Just return _my_tls.tid; (__reent_t::init_clib): Eliminate. * tlsoffsets.h: Regenerate.
2003-12-24 00:26:31 +08:00
mask_bits);
* DevNotes: Add entry cgf-000013. * cygserver_ipc.h (ipc_set_proc_info): Use _cygtls::ipc_set_proc_info to set per-thread signal arrived value. * cygthread.cc (cygthread::detach): Use per-thread signal_arrived via set_thread_waiting. * fork.cc (_cygtls::fixup_after_fork): Clear signal_arrived. (_cygtls::remove): Close any signal_arrived handle when thread exists. (_cygtls::find_tls): Remove unneeded function. * cygtls.h: Update copyright. (class _cygtls): Reorganize to help avoid rebuilding newlib when structure changes. (_cygtls::event): Delete. (_cygtls::threadkill): Ditto. (_cygtls::signal_waiting): Declare new bool. (_cygtls::find_tls): Delete declaration. (_cygtls::set_threadkill): Ditto. (_cygtls::reset_threadkill): Ditto. (_cygtls::set_signal_arrived): Declare new function. (class set_thread_waiting): Declare new class. * cygwait.cc (cw_nowait_storage): Define. (cygwait): Set per-thread signal_arrived via set_thread_waiting. Don't special-case _main_tls. * cygwait.h (cw_nowait): Define. (cw_infinite): Ditto. (cygwait): Redefine pathological wait-only case. * dcrt0.cc (dll_crt0_0): Remove call to now-defunct events_init(). (dll_crt0_1): Remove call to now-defunct create_signal_arrived(). * exceptions.cc: Reflect set_signal_mask() argument reordering throughout. Remove signal mask synchronization throughout. (events_init): Delete definition. (mask_sync): Delete now-unneeded mask synchronization. (set_signal_mask): Reverse order of arguments to "standard" to, from layout. Rename "newmask" argument to "setmask". Remove debugging. (sig_handle_tty_stop): Use cancelable_wait rather than WFMO. (_cygtls::interrupt_setup): Don't treat "threadkill" events specially. Conditionally set signal_arrived depending on whether the thread has created it or not. (sigpacket::process): Reorganize to reflect thread-specific sending of signals which is more in line with the way it was actually supposed to work. * fhandler_socket.cc (get_inet_addr): Use cancelable_wait rather than IsEventSignalled to avoid potential race. (fhandler_socket::wait_for_events): Set signal_arrived event using set_thread_waiting(). (fhandler_socket::close): Use cygwait for the case of just waiting 10 ms for a signal. * fhandler_tape.cc (fhandler_dev_tape::_lock): Use cancelable_wait rather than WFMO. Redo switch/case tests accordingly. * fhandler_termios.cc (fhandler_termios::bg_check): Use cygwait for case of just waiting 0 ms for a potential signal. * fhandler_tty.cc (fhandler_pty_master::process_slave_output): Use cancelable_wait rather than WFSO. * fhandler_windows.cc (fhandler_windows::read): Set per-thread signal_arrived via set_thread_waiting(). * flock.cc (lf_setlock): Ditto. * select.cc (pselect): Ditto. Set per-thread signal_arrived using set_thread_waiting(). * gendef: Don't special case handling of _cygtls::sig for threads. * gentls_offsets: Use #pragma once in tlsoffsets.h. * ntdll.h: Use #pragma once. * poll.cc: Reflect set_signal_mask() argument reordering. * posix_ipc.cc (ipc_mutex_lock): Use cancelable_wait rather than WFMO. (ipc_cond_timedwait): Set perl-thread signal arrived using set_thread_waiting(). * security.h: Use #pragma once. * signal.cc (abort): Reflect set_signal_mask() argument reordering. (clock_nanosleep): Ditto. Change call to cancelable_wait to properly specify handling of cancel and interrupt. (sigwaitinfo): Remove handling of per-thread event in favor of per-thread signal_arrived. Use cancelable_wait rather than WFSO. * sigproc.cc (signal_arrived): Delete definition. (create_signal_arrived): Ditto. * sigproc.h (signal_arrived): Delete declaration. (set_signal_mask): Avoid defining as a "C" function. Don't conditionally declare. (create_signal_arrived): Delete declaration. * syscalls.cc (rename): Use cygwait() rather than WFSO. * thread.h (fast_mutex::lock): Use cw_infinite rather than LARGE_NULL. * wait.cc (wait4): Ditto. * thread.cc (pthread_mutex::lock): Ditto. (pthread::join): Ditto. (semaphore::_wait): Ditto. (pthread_kill): Remove set_threadkill() accommodation. * tlsoffsets.h: Regenerate.
2012-07-22 06:58:20 +08:00
setmask = newmask;
* exceptions.cc (set_signal_mask): Redefine to not pass by address. Report calculated mask in debugging output. * sigproc.h (set_signal_mask): Reflect above change in declaration. * path.cc (mount_item::build_win32): Take path apart before feeding it to fnmunge. Throughout, change use of _reent_winsup()-> to _my_tls.locals. instead. Throughout, remove obsolete MT_SAFE/_CYG_THREAD_FAILSAFE considerations. Througout, add cygtls.h include. * Makefile.in (DLL_OFILES): Add cygtls.o. Add some more objects to the -fomit-frame-pointer list. * acconfig.h: Remove obsolete settings. * config.h.in: Ditto. * bsdlib.cc: Add cygtls.h include. * configure.in: Remove --enable-extra-threadsafe-checking. * configure: Regenerate. * cygtls.h (_local_storage): New struct renamed from _winsup_t (sic). (_threadinfo:local_clib): Add new field. (_threadinfo::locals): Ditto. (_threadinfo::init_thread): Accept second _reent * argument. (_threadinfo::call): Define as regparm. (CYGTLS_PADSIZE): Remove unnecessary slop. (_getreent): Define as a macro. * thread.h: Remove _CYG_THREAD_FAILSAFE and MT_SAFE stuff. (_winsup_t): Move to cygtls.h. (ResourceLocks::ResourceLocks): Eliminate empty constructor. (MTinterface::reents): Eliminate. (MTinterface::thread_self_key): Eliminate. (MTinterface::MTinterface): Eliminate. * dcrt0.cc: Include stdio.h for _impure_ptr initialization. (do_global_ctors): Remove run_ctors_p (sic) considerations. Don't call atexit here. (__main): Initialize destructors for user here. (dll_crt0_1): Accept a dummy argument. Don't call init_thread here. Don't set _impure_ptr here. Call do_global_ctors after more things have been initialized. (_dll_crt0): Define zeros buffer as max of needed size of CYGTLS_PADSIZE so that it can be used for two purposes while minimizing stack usage. Initialize _impure_ptr specifically, for speed. Call dll_crt0_1 with buffer argument. (cygwin_dll_init): Call dll_crt0_1 with dummy argument. * dtable.cc (dtable::find_unused_handle): Remove call to AssertResourceOwner. * exceptions.cc: Move _threadinfo stuff to new file. * cygtls.cc: New file. * gentls_offsets: Accommodate increasing complexity of cygtls.h. * hires.h (hires_base::~hires_base): Remove. * init.cc (dll_entry): Remove setting of reents. * thread.cc: Remove syslog.h include. (__getreent): Simplify to use _my_tls. (_reent_winsup): Delete. (AssertResourceOwner): Delete. (MTinterface::Init): Remove setting of _clib and _winsup, with all that entails. (MTinterface::fixup_after_fork): Ditto. (pthread::thread_init_wrapper): Ditto. Also remove call to set_tls_self_pointer. (pthread::set_tls_self_pointer): Eliminate. (pthread::get_tls_self_pointer): Just return _my_tls.tid; (__reent_t::init_clib): Eliminate. * tlsoffsets.h: Regenerate.
2003-12-24 00:26:31 +08:00
if (mask_bits)
sig_dispatch_pending (true);
2000-02-18 03:38:33 +08:00
}
DWORD
dumpstack_overflow_wrapper (PVOID arg)
{
cygwin_exception *exc = (cygwin_exception *) arg;
SetThreadName (GetCurrentThreadId (), "__dumpstack_overflow");
exc->dumpstack ();
return 0;
}
* cygtls.h (_cygtls::signal_exit): Delete from class. * exception.h (cygwin_exception): New class. (cygwin_exception::dumpstack): Declare new function. (cygwin_exception::context): Ditto. (cygwin_exception::dump_exception): Ditto. * exceptions.cc (cygwin_exception::dump_exception): Move into cygwin_exception class. Accommodate new variable names. (cygwin_exception::dumpstack): Ditto stackdump -> dumpstack. (exception::handle): Move andreas processing earlier. Defer signal processing decisions to the signal thread where they belong. Pass exception information to sig_send via new siginfo_t si_cyg field. (ctrl_c_handler): Wait for SIGHUP signal to be processed since it could cause a process exit and we don't want races with thread exit lock. (signal_exit): Move back here from sigproc.cc. Modify arguments and remove from sigpacket class. Decide when to dump core based on signal type. (sigpacket::process): Handle exiting signals in context of threads rather than in the signal thread. Signal debugger on non-Windows signals. Remove setup_signal_exit call. * sigproc.cc (no_signals_available): Remove argument. (signal_exit_code): Delete. (close_my_readsig): Ditto. (_cygtls::signal_exit): Move to exceptions.cc. (sigproc_terminate): Don't attempt to terminate signal thread. (setup_signal_exit): Delete. (exit_thread): Use new si_cyg entry in siginfo_t. (sig_send): Just use empty initializer for si. Accommodate change in no_signals_available argument. (wait_sig): Remove attempt to "go asynchronous" on process exit. Delete __SIGEXIT handling. Don't ever exit. * sigproc.h: Remove __SIGEXIT from signal enum. Renumber. * include/cygwin/signal.h (siginfo_t): Add si_cyg entry.
2013-01-03 02:34:06 +08:00
/* Exit due to a signal. Should only be called from the signal thread. */
extern "C" {
static void
signal_exit (int sig, siginfo_t *si, void *)
* cygtls.h (_cygtls::signal_exit): Delete from class. * exception.h (cygwin_exception): New class. (cygwin_exception::dumpstack): Declare new function. (cygwin_exception::context): Ditto. (cygwin_exception::dump_exception): Ditto. * exceptions.cc (cygwin_exception::dump_exception): Move into cygwin_exception class. Accommodate new variable names. (cygwin_exception::dumpstack): Ditto stackdump -> dumpstack. (exception::handle): Move andreas processing earlier. Defer signal processing decisions to the signal thread where they belong. Pass exception information to sig_send via new siginfo_t si_cyg field. (ctrl_c_handler): Wait for SIGHUP signal to be processed since it could cause a process exit and we don't want races with thread exit lock. (signal_exit): Move back here from sigproc.cc. Modify arguments and remove from sigpacket class. Decide when to dump core based on signal type. (sigpacket::process): Handle exiting signals in context of threads rather than in the signal thread. Signal debugger on non-Windows signals. Remove setup_signal_exit call. * sigproc.cc (no_signals_available): Remove argument. (signal_exit_code): Delete. (close_my_readsig): Ditto. (_cygtls::signal_exit): Move to exceptions.cc. (sigproc_terminate): Don't attempt to terminate signal thread. (setup_signal_exit): Delete. (exit_thread): Use new si_cyg entry in siginfo_t. (sig_send): Just use empty initializer for si. Accommodate change in no_signals_available argument. (wait_sig): Remove attempt to "go asynchronous" on process exit. Delete __SIGEXIT handling. Don't ever exit. * sigproc.h: Remove __SIGEXIT from signal enum. Renumber. * include/cygwin/signal.h (siginfo_t): Add si_cyg entry.
2013-01-03 02:34:06 +08:00
{
debug_printf ("exiting due to signal %d", sig);
exit_state = ES_SIGNAL_EXIT;
switch (sig)
{
case SIGABRT:
case SIGBUS:
case SIGFPE:
case SIGILL:
case SIGQUIT:
case SIGSEGV:
case SIGSYS:
case SIGTRAP:
case SIGXCPU:
case SIGXFSZ:
if (try_to_debug ())
break;
if (cygheap->rlim_core == 0Ul)
break;
sig |= __WCOREFLAG; /* Set flag in exit status to show that we've "dumped core" */
/* If core dump size is >1MB, try to invoke dumper to write a
.core file */
if (cygheap->rlim_core > 1024*1024)
{
if (exec_prepared_command (dumper_command))
break;
/* If that failed, fall-through to... */
}
/* Otherwise write a .stackdump */
if (si->si_code != SI_USER && si->si_cyg)
{
cygwin_exception *exc = (cygwin_exception *) si->si_cyg;
if ((NTSTATUS) exc->exception_record ()->ExceptionCode
== STATUS_STACK_OVERFLOW)
{
/* We're handling a stack overflow so we're running low
on stack (surprise!) The dumpstack method needs lots
of stack for buffers. So what we do here is to run
dumpstack in another thread with its own stack. */
HANDLE thread = CreateThread (&sec_none_nih, 0,
dumpstack_overflow_wrapper,
exc, 0, NULL);
if (thread)
{
WaitForSingleObject (thread, INFINITE);
CloseHandle (thread);
}
}
else
((cygwin_exception *) si->si_cyg)->dumpstack ();
}
else
{
CONTEXT c;
c.ContextFlags = CONTEXT_FULL;
RtlCaptureContext (&c);
cygwin_exception exc ((PUINT_PTR) __builtin_frame_address (0), &c);
exc.dumpstack ();
}
break;
* cygtls.h (_cygtls::signal_exit): Delete from class. * exception.h (cygwin_exception): New class. (cygwin_exception::dumpstack): Declare new function. (cygwin_exception::context): Ditto. (cygwin_exception::dump_exception): Ditto. * exceptions.cc (cygwin_exception::dump_exception): Move into cygwin_exception class. Accommodate new variable names. (cygwin_exception::dumpstack): Ditto stackdump -> dumpstack. (exception::handle): Move andreas processing earlier. Defer signal processing decisions to the signal thread where they belong. Pass exception information to sig_send via new siginfo_t si_cyg field. (ctrl_c_handler): Wait for SIGHUP signal to be processed since it could cause a process exit and we don't want races with thread exit lock. (signal_exit): Move back here from sigproc.cc. Modify arguments and remove from sigpacket class. Decide when to dump core based on signal type. (sigpacket::process): Handle exiting signals in context of threads rather than in the signal thread. Signal debugger on non-Windows signals. Remove setup_signal_exit call. * sigproc.cc (no_signals_available): Remove argument. (signal_exit_code): Delete. (close_my_readsig): Ditto. (_cygtls::signal_exit): Move to exceptions.cc. (sigproc_terminate): Don't attempt to terminate signal thread. (setup_signal_exit): Delete. (exit_thread): Use new si_cyg entry in siginfo_t. (sig_send): Just use empty initializer for si. Accommodate change in no_signals_available argument. (wait_sig): Remove attempt to "go asynchronous" on process exit. Delete __SIGEXIT handling. Don't ever exit. * sigproc.h: Remove __SIGEXIT from signal enum. Renumber. * include/cygwin/signal.h (siginfo_t): Add si_cyg entry.
2013-01-03 02:34:06 +08:00
}
lock_process until_exit (true);
if (have_execed || exit_state > ES_PROCESS_LOCKED)
{
debug_printf ("recursive exit?");
myself.exit (sig);
}
* cygtls.h (_cygtls::signal_exit): Delete from class. * exception.h (cygwin_exception): New class. (cygwin_exception::dumpstack): Declare new function. (cygwin_exception::context): Ditto. (cygwin_exception::dump_exception): Ditto. * exceptions.cc (cygwin_exception::dump_exception): Move into cygwin_exception class. Accommodate new variable names. (cygwin_exception::dumpstack): Ditto stackdump -> dumpstack. (exception::handle): Move andreas processing earlier. Defer signal processing decisions to the signal thread where they belong. Pass exception information to sig_send via new siginfo_t si_cyg field. (ctrl_c_handler): Wait for SIGHUP signal to be processed since it could cause a process exit and we don't want races with thread exit lock. (signal_exit): Move back here from sigproc.cc. Modify arguments and remove from sigpacket class. Decide when to dump core based on signal type. (sigpacket::process): Handle exiting signals in context of threads rather than in the signal thread. Signal debugger on non-Windows signals. Remove setup_signal_exit call. * sigproc.cc (no_signals_available): Remove argument. (signal_exit_code): Delete. (close_my_readsig): Ditto. (_cygtls::signal_exit): Move to exceptions.cc. (sigproc_terminate): Don't attempt to terminate signal thread. (setup_signal_exit): Delete. (exit_thread): Use new si_cyg entry in siginfo_t. (sig_send): Just use empty initializer for si. Accommodate change in no_signals_available argument. (wait_sig): Remove attempt to "go asynchronous" on process exit. Delete __SIGEXIT handling. Don't ever exit. * sigproc.h: Remove __SIGEXIT from signal enum. Renumber. * include/cygwin/signal.h (siginfo_t): Add si_cyg entry.
2013-01-03 02:34:06 +08:00
/* Starve other threads in a vain attempt to stop them from doing something
stupid. */
SetThreadPriority (GetCurrentThread (), THREAD_PRIORITY_TIME_CRITICAL);
sigproc_printf ("about to call do_exit (%x)", sig);
do_exit (sig);
}
} /* extern "C" */
/* As above, but before exiting due to api_fatal */
extern "C"
void
api_fatal_debug ()
{
if (try_to_debug ())
return;
if (cygheap->rlim_core == 0Ul)
return;
if (cygheap->rlim_core > 1024*1024)
if (exec_prepared_command (dumper_command))
return;
cygwin_stackdump();
}
* cygtls.h (_cygtls::reset_signal_arrived): Actually reset the signal_arrived event. (_cygtls::handle_SIGCONT): Declare ew function. * cygwait.cc (is_cw_sig_handle): Delete. (is_cw_sig_cont): New convenience define. (cygwait): Clear signal if is_cw_sig_cont and we got a SIGCONT. * cygwait.h (cw_wait_mask): Add cw_sig_cont. * exceptions.cc (sig_handle_tty_stop): Tighten "incyg" region. Use cw_sig_cont param for cygwait. Don't zero signal here outside of lock. (sigpacket::setup_handler): Don't check for in_forkee since we will now never get here in that state. (_cygtls::handle_SIGCONT): Define new function. (sigpacket::process): Call handle_SIGCONT early to deal with SIGCONT. Nuke continue_now handling. Allow SIGKILL to kill a suspended process. Delete a couple of now-unneeded labels. (_cygtls::call_signal_handler): Reorganize setting of incyg within lock. * sigproc.cc (pending_signals): Simplify. (pending_signals::clear): New method. (_cygtls::remove_wq): Reorganize to always close wq.thread_ev if it exists to avoid handle leaks. (sig_clear): Simplify by just calling sigq.clear(). (sig_dispatch_pending): Always call sigq.pending even in signal thread to force another loop in wait_sig. (sig_send): Remove a "goto out" just before out: label. (pending_signals::add): Simplify. (pending_signals::del): Delete. (pending_signals::next): Delete. (wait_sig): Define variable q to be the start of the signal queue. Just iterate through sigq queue, deleting processed or zeroed signals. Only set clearwait when the current signal is SIGCHLD. * sigproc.h: Add a comment about an unused enum.
2013-04-09 09:01:19 +08:00
/* Attempt to carefully handle SIGCONT when we are stopped. */
void
_cygtls::handle_SIGCONT (threadlist_t * &tl_entry)
* cygtls.h (_cygtls::reset_signal_arrived): Actually reset the signal_arrived event. (_cygtls::handle_SIGCONT): Declare ew function. * cygwait.cc (is_cw_sig_handle): Delete. (is_cw_sig_cont): New convenience define. (cygwait): Clear signal if is_cw_sig_cont and we got a SIGCONT. * cygwait.h (cw_wait_mask): Add cw_sig_cont. * exceptions.cc (sig_handle_tty_stop): Tighten "incyg" region. Use cw_sig_cont param for cygwait. Don't zero signal here outside of lock. (sigpacket::setup_handler): Don't check for in_forkee since we will now never get here in that state. (_cygtls::handle_SIGCONT): Define new function. (sigpacket::process): Call handle_SIGCONT early to deal with SIGCONT. Nuke continue_now handling. Allow SIGKILL to kill a suspended process. Delete a couple of now-unneeded labels. (_cygtls::call_signal_handler): Reorganize setting of incyg within lock. * sigproc.cc (pending_signals): Simplify. (pending_signals::clear): New method. (_cygtls::remove_wq): Reorganize to always close wq.thread_ev if it exists to avoid handle leaks. (sig_clear): Simplify by just calling sigq.clear(). (sig_dispatch_pending): Always call sigq.pending even in signal thread to force another loop in wait_sig. (sig_send): Remove a "goto out" just before out: label. (pending_signals::add): Simplify. (pending_signals::del): Delete. (pending_signals::next): Delete. (wait_sig): Define variable q to be the start of the signal queue. Just iterate through sigq queue, deleting processed or zeroed signals. Only set clearwait when the current signal is SIGCHLD. * sigproc.h: Add a comment about an unused enum.
2013-04-09 09:01:19 +08:00
{
if (NOTSTATE (myself, PID_STOPPED))
return;
myself->stopsig = 0;
myself->process_state &= ~PID_STOPPED;
/* Carefully tell sig_handle_tty_stop to wake up.
Make sure that any pending signal is handled before trying to
send a new one. Then make sure that SIGCONT has been recognized
before exiting the loop. */
bool sigsent = false;
while (1)
if (current_sig) /* Assume that it's ok to just test sig outside of a
lock since setup_handler does it this way. */
{
cygheap->unlock_tls (tl_entry);
yield (); /* Attempt to schedule another thread. */
tl_entry = cygheap->find_tls (_main_tls);
}
else if (sigsent)
break; /* SIGCONT has been recognized by other thread */
else
{
current_sig = SIGCONT;
set_signal_arrived (); /* alert sig_handle_tty_stop */
sigsent = true;
}
* cygtls.h (_cygtls::reset_signal_arrived): Actually reset the signal_arrived event. (_cygtls::handle_SIGCONT): Declare ew function. * cygwait.cc (is_cw_sig_handle): Delete. (is_cw_sig_cont): New convenience define. (cygwait): Clear signal if is_cw_sig_cont and we got a SIGCONT. * cygwait.h (cw_wait_mask): Add cw_sig_cont. * exceptions.cc (sig_handle_tty_stop): Tighten "incyg" region. Use cw_sig_cont param for cygwait. Don't zero signal here outside of lock. (sigpacket::setup_handler): Don't check for in_forkee since we will now never get here in that state. (_cygtls::handle_SIGCONT): Define new function. (sigpacket::process): Call handle_SIGCONT early to deal with SIGCONT. Nuke continue_now handling. Allow SIGKILL to kill a suspended process. Delete a couple of now-unneeded labels. (_cygtls::call_signal_handler): Reorganize setting of incyg within lock. * sigproc.cc (pending_signals): Simplify. (pending_signals::clear): New method. (_cygtls::remove_wq): Reorganize to always close wq.thread_ev if it exists to avoid handle leaks. (sig_clear): Simplify by just calling sigq.clear(). (sig_dispatch_pending): Always call sigq.pending even in signal thread to force another loop in wait_sig. (sig_send): Remove a "goto out" just before out: label. (pending_signals::add): Simplify. (pending_signals::del): Delete. (pending_signals::next): Delete. (wait_sig): Define variable q to be the start of the signal queue. Just iterate through sigq queue, deleting processed or zeroed signals. Only set clearwait when the current signal is SIGCHLD. * sigproc.h: Add a comment about an unused enum.
2013-04-09 09:01:19 +08:00
/* Clear pending stop signals */
sig_clear (SIGSTOP);
sig_clear (SIGTSTP);
sig_clear (SIGTTIN);
sig_clear (SIGTTOU);
}
int
* cygwin/include/signal.h: Add copyright notice. * cygwin.din: Make clock SIGFE. Add clock_gettime, sigwaitinfo, timer_create, timer_delete, timer_settime. * include/cygwin/version.h: Reflect above additions. * fork.cc (fork_child): Call fixup_timers_after_fork. * signal.cc (sigwait): Remove unused variable. * timer.cc: New file. (clock_gettime): Define new function. (timer_tracker): Define new struct used by timer functions. (timer_tracker::timer_tracker): New function. (to_us): New function. (timer_thread): New function. (timer_tracker::settime): New function. (timer_create): New function. (timer_settime): New function. (timer_delete): New function. (fixup_timers_after_fork): New function. * cygthread.cc: Bump thread count. * signal.cc (sigwaitinfo): Define new function. (sigwait): Redefine based on sigwaitinfo. * include/cygwin/signal.h (sigwaitinfo): Declare. (sigwait): Ditto. * dtable.cc (dtable::vfork_parent_restore): Avoid double close of ctty when ctty == ctty_on_hold. * cygtls.h (_threadinfo::threadkill): New element. (_threadinfo::set_threadkill): Declare new function. (_threadinfo::reset_threadkill): Declare new function. * dcrt0.cc (dcrt0_1): Call here so that it will be possible to attach to running process with #(*& Windows Me/9x. (initial_env): Try to initialize strace if uninitialized. * gendef: Don't zero signal if threadkill is set since that will happen in the called function. * signal.cc (sigwait): Ensure cleanup in error conditions. * sigproc.cc (sig_send): Clear packet mask storage. (wait_subproc): Fill in child exit code in siginfo_t structure. * thread.cc (pthread_kill): Set threadkill flag. * tlsoffsets.h: Regenerate. Throughout, use siginfo_t to fill out all signal information for "kernel" signals. * cygtls.h (_threadinfo::set_siginfo): Declare new function. * cygtls.cc (_threadinfo::set_siginfo): Define new function. * dcrt0.cc (do_exit): Accommodate siginfo_t considerations. * exceptions.cc (handle_exceptions): Ditto. (sig_handle_tty_stop): Ditto. (ctrl_c_handler): Use killsys() to send signal. (sigpacket::process): Rename from sig_handle. Use siginfo_t field from sigpacket for everything. (tty_min::kill_pgrp): Accommodate siginfo_t considerations. (fhandler_termios::bg_check): Ditto. * fhandler_tty.cc (fhandler_tty_slave::ioctl): Use killsys() to send signal. * signal.cc (kill_worker): Rewrite to use siginfo_t second argument. (kill_pgrp): Ditto. (kill0): Define new function pulled from kill(). (kill): Rewrite as frontend to kill0. (killsys): Define new function. * sigproc.cc (sigelem): Eliminate. (sigpacket): Move to sigproc.h. Subsume sigelem. (pending_signals): Use sigpacket rather than sigelem for everything. (sig_clear): Ditto. (wait_sig): Ditto. (sig_send): Rewrite to use siginfo_t argument. (sig_send): New function wratpper to sig_send with siginfo_t argument. (wait_subproc): Accommodate siginfo_t considerations. * thread.cc (pthread_kill): Ditto. * sigproc.h (sigpacket): Move here. (sigpacket::process): Declare "new" function. (sig_handle): Eliminate declaration. (sig_send): Declare with new paramaters. (killsys): Declare new function. (kill_pgrp): Declare. * winsup.h: Move some signal-specific stuff to sigproc.h. * include/cygwin/signal.h: Tweak some siginfo_t stuff.
2004-01-19 13:46:54 +08:00
sigpacket::process ()
2000-02-18 03:38:33 +08:00
{
int rc = 1;
bool issig_wait = false;
struct sigaction& thissig = global_sigs[si.si_signo];
void *handler = have_execed ? NULL : (void *) thissig.sa_handler;
threadlist_t *tl_entry = NULL;
_cygtls *tls = NULL;
* cygtls.h (_cygtls::reset_signal_arrived): Actually reset the signal_arrived event. (_cygtls::handle_SIGCONT): Declare ew function. * cygwait.cc (is_cw_sig_handle): Delete. (is_cw_sig_cont): New convenience define. (cygwait): Clear signal if is_cw_sig_cont and we got a SIGCONT. * cygwait.h (cw_wait_mask): Add cw_sig_cont. * exceptions.cc (sig_handle_tty_stop): Tighten "incyg" region. Use cw_sig_cont param for cygwait. Don't zero signal here outside of lock. (sigpacket::setup_handler): Don't check for in_forkee since we will now never get here in that state. (_cygtls::handle_SIGCONT): Define new function. (sigpacket::process): Call handle_SIGCONT early to deal with SIGCONT. Nuke continue_now handling. Allow SIGKILL to kill a suspended process. Delete a couple of now-unneeded labels. (_cygtls::call_signal_handler): Reorganize setting of incyg within lock. * sigproc.cc (pending_signals): Simplify. (pending_signals::clear): New method. (_cygtls::remove_wq): Reorganize to always close wq.thread_ev if it exists to avoid handle leaks. (sig_clear): Simplify by just calling sigq.clear(). (sig_dispatch_pending): Always call sigq.pending even in signal thread to force another loop in wait_sig. (sig_send): Remove a "goto out" just before out: label. (pending_signals::add): Simplify. (pending_signals::del): Delete. (pending_signals::next): Delete. (wait_sig): Define variable q to be the start of the signal queue. Just iterate through sigq queue, deleting processed or zeroed signals. Only set clearwait when the current signal is SIGCHLD. * sigproc.h: Add a comment about an unused enum.
2013-04-09 09:01:19 +08:00
/* Don't try to send signals if we're just starting up since signal masks
may not be available. */
if (!cygwin_finished_initializing)
{
rc = -1;
* cygtls.h (_cygtls::reset_signal_arrived): Actually reset the signal_arrived event. (_cygtls::handle_SIGCONT): Declare ew function. * cygwait.cc (is_cw_sig_handle): Delete. (is_cw_sig_cont): New convenience define. (cygwait): Clear signal if is_cw_sig_cont and we got a SIGCONT. * cygwait.h (cw_wait_mask): Add cw_sig_cont. * exceptions.cc (sig_handle_tty_stop): Tighten "incyg" region. Use cw_sig_cont param for cygwait. Don't zero signal here outside of lock. (sigpacket::setup_handler): Don't check for in_forkee since we will now never get here in that state. (_cygtls::handle_SIGCONT): Define new function. (sigpacket::process): Call handle_SIGCONT early to deal with SIGCONT. Nuke continue_now handling. Allow SIGKILL to kill a suspended process. Delete a couple of now-unneeded labels. (_cygtls::call_signal_handler): Reorganize setting of incyg within lock. * sigproc.cc (pending_signals): Simplify. (pending_signals::clear): New method. (_cygtls::remove_wq): Reorganize to always close wq.thread_ev if it exists to avoid handle leaks. (sig_clear): Simplify by just calling sigq.clear(). (sig_dispatch_pending): Always call sigq.pending even in signal thread to force another loop in wait_sig. (sig_send): Remove a "goto out" just before out: label. (pending_signals::add): Simplify. (pending_signals::del): Delete. (pending_signals::next): Delete. (wait_sig): Define variable q to be the start of the signal queue. Just iterate through sigq queue, deleting processed or zeroed signals. Only set clearwait when the current signal is SIGCHLD. * sigproc.h: Add a comment about an unused enum.
2013-04-09 09:01:19 +08:00
goto done;
* devices.cc: New file. * devices.gperf: New file. * devices.shilka: New file. * cygwin-gperf: New file. * cygwin-shilka: New file. * fhandler_fifo.cc: New file. * fhandler_nodevice.cc : New file. Reorganize headers so that path.h precedes fhandler.h throughout. Remove device argument and unit arguments from fhandler constructors throughout. Remove pc arguments to fhandler functions and use internal pc element instead, throughout. Use dev element in pc throughout. Use major/minor elements rather than units and device numbers previously in fhandler class. Use correct methods for fhandler file names rather than directly accessing file name variables, throughout. * Makefile.in (DLL_OFILES): Add devices.o, fhandler_fifo.o * dcrt0.cc (dll_crt0_1): Call device::init. * devices.h: Renumber devices based on more Linux-like major/minor numbers. Add more devices. Declare standard device storage. (device): Declare struct. * dir.cc (opendir): Use new 'build_fh_name' to construct a fhandler_* type. * dtable.cc (dtable::get_debugger_info): Ditto. (cygwin_attach_handle_to_fd): Ditto. (dtable::release): Remove special FH_SOCKET case in favor of generic "need_fixup_before" test. (dtable::init_std_file_from_handle): Use either build_fh_dev or build_fh_name to build standard fhandler. (dtable::build_fh_name): Renamed from dtable::build_fhandler_from_name. Move out of dtable class. Don't accept a path_conv argument. Just build it here and pass it to: (build_fh_pc): Renamed from dtable::build_fhandler. Move out of dtable class. Use intrinsic device type in path_conv to create new fhandler. (build_fh_dev): Renamed from dtable::build_fhandler. Move out of dtable class. Simplify arguments to just take new 'device' type and a name. Just return pointer to fhandler rather than trying to insert into dtable. (dtable::dup_worker): Accommodate above build_fh name changes. (dtable::find_fifo): New (currently broken) function. (handle_to_fn): Use strechr for efficiency. * dtable.h: Reflect above build_fh name changes and argument differences. (fhandler_base *&operator []): Return self rather than copy of self. * fhandler.cc (fhandler_base::operator =): Use pc element to set normalized path. (fhandler_base::set_name): Ditto. (fhandler_base::raw_read): Use method to access name. (fhandler_base::write): Correctly use get_output_handle rather than get_handle. (handler_base::device_access_denied): New function. (fhandler_base::open): Eliminate pc argument and use pc element of fhandler_base throughout. (fhandler_base::fstat): Detect if device is based in filesystem and use fstat_fs to calculate stat, if so. (fhandler_base::fhandler_base): Eliminate handling of file names and, instead, just free appropriate component from pc. (fhandler_base::opendir): Remove path_conv parameter. * fhandler.h: Remove all device flags. (fhandler_base::pc): New element. (fhandler_base::set_name): Change argument to path_conv. (fhandler_base::error): New function. (fhandler_base::exists): New function. (fhandler_base::pc_binmode): New function. (fhandler_base::dev): New function. (fhandler_base::open_fs): New function. (fhandler_base::fstat_fs): New function. (fhandler_base::fstat_by_name): New function. (fhandler_base::fstat_by_handle): New function. (fhandler_base::isfifo): New function. (fhandler_base::is_slow): New function. (fhandler_base::is_auto_device): New function. (fhandler_base::is_fs_special): New function. (fhandler_base::device_access_denied): New function. (fhandler_base::operator DWORD&): New operator. (fhandler_base::get_name): Return normalized path from pc. (fhandler_base::get_win32_name): Return windows path from pc. (fhandler_base::isdevice): Renamed from is_device. (fhandler_base::get_native_name): Return device format. (fhandler_fifo): New class. (fhandler_nodevice): New class. (select_stuff::device_specific): Remove array. (select_stuff::device_specific_pipe): New class element. (select_stuff::device_specific_socket): New class element. (select_stuff::device_specific_serial): New class element. (select_stuff::select_stuff): Initialize new elements. * fhandler_disk_file.cc (fhandler_base::fstat_by_handle): Move to base class from fhandler_disk_file. (fhandler_base::fstat_by_name): Ditto. (fhandler_base::fstat_by_name): Ditto. (fhandler_disk_file::open): Move most functionality into fhandler_base::open_fs. (fhandler_base::open_fs): New function. (fhandler_disk_file::close): Move most functionality into fhandler_base::close_fs. (fhandler_base::close_fs): New function. * fhandler_mem.cc (fhandler_dev_mem::open): Use device name in debugging output. * fhandler_socket.cc (fhandler_socket::set_connect_secret): Copy standard urandom device into appropriate place. (fhandler_socket::accept): Reflect change in fdsock return value. * fhandler_tty.cc: See "throughouts" above. * net.cc: Accommodate fdsock change throughout. (fdsock): Return success or failure, accept fd argument and device argument. * path.cc (symlink_info::major): New element. (symlink_info::minor): New element. (symlink_info::parse_device): Declare new function. (fs_info::update): Accommodate changes in path_conv class. (path_conv::fillin): Ditto. (path_conv::return_and_clear_normalized_path): Eliminate. (path_conv::set_normalized_path): New function. (path_conv::path_conv): Set info in dev element. Use path_conv methods Check for FH_FS rather than FH_BAD to indicate when to fill in filesystem stuff. where appropriate rather than direct access. Use set_normalized_path to set normalized path. (windows_device_names): Eliminate. (get_dev): Ditto. (get_raw_device_number): Ditto. (get_device_number): Ditto. (win32_device_name): Call new device name parser to do most of the heavy lifting. (mount_info::conv_to_win32_path): Fill in dev field as appropriate. (symlink_worker): Handle new device files. (symlink_info::check): Ditto. (symlink_info::parse_device): Define new function. * path.h (executable_states): Move here from fhandler.h. (fs_info): Rename variables to *_storage and create methods for accessing same. (path_conv): Add dev element, remove devn and unit and adjust inline methods to accommodate. (set_normalized_path): Declare new function. * pinfo.cc (_pinfo::commune_recv): Add broken support for handling fifos. (_pinfo::commune_send): Ditto. * pipe.cc (fhandler_pipe::close): check for existence of handle before closing it. (handler_pipe::create): Rename from make_pipe. Change arguments to accept fhandler_pipe array. Accommodate fifos. (pipe): Rework to deal with fhandler_pipe::create changes. (_pipe): Ditto. * select.cc: Use individual device_specific types throughout rather than indexing with obsolete device number. (set_bits): Use is_socket call rather than checking device number. * shared_info.h (CURR_MOUNT_MAGIC): Update. (conv_to_win32_path): Reflect addition of device argument. * syscalls.cc (mknod_worker): New function. (open): Use build_fh_name to build fhandler. (chown_worker): Detect if this is an 'auto' device rather than an on-filesystem device and handle appropriately. (chmod_device): New function. (chmod): Detect if this is an 'auto' device rather than an on-filesystem device and handle appropriately. Use chmod_device to set mode of in-filesystem devices. (stat_worker): Eliminate path_conv argument. Call build_fh_name to construct fhandler. Use fh->error() rather than pc->error to detect errors in fhandler construction. (access_worker): New function pulled from access. Accommodate in-filesystem devices. (access): Use access_worker. (fpathconf): Detect if this is an 'auto' device rather than an on-filesystem device and handle appropriately. (mknod_worker): New function. (mknod32): New function. (chroot): Free normalized path -- assuming it was actually cmalloced. * tty.cc (create_tty_master): Tweak for new device class. (tty::common_init): Ditto. * winsup.h (stat_worker): Remove. (symlink_worker): Declare. * exceptions.cc (set_process_mask): Just call sig_dispatch_pending and don't worry about pending_signals since sig_dispatch_pending should always do the right thing now. (sig_handle): Reorganize SIGCONT handling to more closely conform to SUSv3. * pinfo.h: Move __SIG enum to sigproc.h. (PICOM_FIFO): New enum element. (_pinfo): Remove 'thread2signal' stuff throughout class. (_pinfo::commune_send): Make varargs. (_pinfo::sigtodo): Eliminate. (_pinfo::thread2signal): Ditto. * signal.cc (kill_worker): Eliminate call to setthread2signal. * sigproc.cc (local_sigtodo): Eliminate. (getlocal_sigtodo): Ditto. (sigelem): New class. (pending_signals): New class. (sigqueue): New variable, start of sigqueue linked list. (sigcatch_nonmain): Eliminate. (sigcatch_main): Eliminate. (sigcatch_nosync): Eliminate. (sigcomplete_nonmain): Eliminate. (pending_signals): Eliminate. (sig_clear): Call signal thread to clear pending signals, unless already in signal thread. (sigpending): Call signal thread to get pending signals. (sig_dispatch_pending): Eliminate use of pending_signals and just check sigqueue. (sigproc_terminate): Eliminate all of the obsolete semaphore stuff. Close signal pipe handle. (sig_send): Eliminate all of the obsolete semaphore stuff and use pipe to send signals. (getevent): Eliminate. (pending_signals::add): New function. (pending_signals::del): New function. (pending_signals::next): New function. (wait_sig): Eliminate all of the obsolete semaphore stuff. Use pipe to communicate and maintain a linked list of signals. * sigproc.h: Move __SIG defines here. Add __SIGPENDING. (sig_dispatch_pending): Remove "C" specifier. (sig_handle): Accept a mask argument. * thread.cc: Remove signal handling considerations throughout.
2003-09-25 08:37:18 +08:00
}
2000-02-18 03:38:33 +08:00
* cygwin/include/signal.h: Add copyright notice. * cygwin.din: Make clock SIGFE. Add clock_gettime, sigwaitinfo, timer_create, timer_delete, timer_settime. * include/cygwin/version.h: Reflect above additions. * fork.cc (fork_child): Call fixup_timers_after_fork. * signal.cc (sigwait): Remove unused variable. * timer.cc: New file. (clock_gettime): Define new function. (timer_tracker): Define new struct used by timer functions. (timer_tracker::timer_tracker): New function. (to_us): New function. (timer_thread): New function. (timer_tracker::settime): New function. (timer_create): New function. (timer_settime): New function. (timer_delete): New function. (fixup_timers_after_fork): New function. * cygthread.cc: Bump thread count. * signal.cc (sigwaitinfo): Define new function. (sigwait): Redefine based on sigwaitinfo. * include/cygwin/signal.h (sigwaitinfo): Declare. (sigwait): Ditto. * dtable.cc (dtable::vfork_parent_restore): Avoid double close of ctty when ctty == ctty_on_hold. * cygtls.h (_threadinfo::threadkill): New element. (_threadinfo::set_threadkill): Declare new function. (_threadinfo::reset_threadkill): Declare new function. * dcrt0.cc (dcrt0_1): Call here so that it will be possible to attach to running process with #(*& Windows Me/9x. (initial_env): Try to initialize strace if uninitialized. * gendef: Don't zero signal if threadkill is set since that will happen in the called function. * signal.cc (sigwait): Ensure cleanup in error conditions. * sigproc.cc (sig_send): Clear packet mask storage. (wait_subproc): Fill in child exit code in siginfo_t structure. * thread.cc (pthread_kill): Set threadkill flag. * tlsoffsets.h: Regenerate. Throughout, use siginfo_t to fill out all signal information for "kernel" signals. * cygtls.h (_threadinfo::set_siginfo): Declare new function. * cygtls.cc (_threadinfo::set_siginfo): Define new function. * dcrt0.cc (do_exit): Accommodate siginfo_t considerations. * exceptions.cc (handle_exceptions): Ditto. (sig_handle_tty_stop): Ditto. (ctrl_c_handler): Use killsys() to send signal. (sigpacket::process): Rename from sig_handle. Use siginfo_t field from sigpacket for everything. (tty_min::kill_pgrp): Accommodate siginfo_t considerations. (fhandler_termios::bg_check): Ditto. * fhandler_tty.cc (fhandler_tty_slave::ioctl): Use killsys() to send signal. * signal.cc (kill_worker): Rewrite to use siginfo_t second argument. (kill_pgrp): Ditto. (kill0): Define new function pulled from kill(). (kill): Rewrite as frontend to kill0. (killsys): Define new function. * sigproc.cc (sigelem): Eliminate. (sigpacket): Move to sigproc.h. Subsume sigelem. (pending_signals): Use sigpacket rather than sigelem for everything. (sig_clear): Ditto. (wait_sig): Ditto. (sig_send): Rewrite to use siginfo_t argument. (sig_send): New function wratpper to sig_send with siginfo_t argument. (wait_subproc): Accommodate siginfo_t considerations. * thread.cc (pthread_kill): Ditto. * sigproc.h (sigpacket): Move here. (sigpacket::process): Declare "new" function. (sig_handle): Eliminate declaration. (sig_send): Declare with new paramaters. (killsys): Declare new function. (kill_pgrp): Declare. * winsup.h: Move some signal-specific stuff to sigproc.h. * include/cygwin/signal.h: Tweak some siginfo_t stuff.
2004-01-19 13:46:54 +08:00
sigproc_printf ("signal %d processing", si.si_signo);
myself->rusage_self.ru_nsignals++;
* cygtls.h (_cygtls::reset_signal_arrived): Actually reset the signal_arrived event. (_cygtls::handle_SIGCONT): Declare ew function. * cygwait.cc (is_cw_sig_handle): Delete. (is_cw_sig_cont): New convenience define. (cygwait): Clear signal if is_cw_sig_cont and we got a SIGCONT. * cygwait.h (cw_wait_mask): Add cw_sig_cont. * exceptions.cc (sig_handle_tty_stop): Tighten "incyg" region. Use cw_sig_cont param for cygwait. Don't zero signal here outside of lock. (sigpacket::setup_handler): Don't check for in_forkee since we will now never get here in that state. (_cygtls::handle_SIGCONT): Define new function. (sigpacket::process): Call handle_SIGCONT early to deal with SIGCONT. Nuke continue_now handling. Allow SIGKILL to kill a suspended process. Delete a couple of now-unneeded labels. (_cygtls::call_signal_handler): Reorganize setting of incyg within lock. * sigproc.cc (pending_signals): Simplify. (pending_signals::clear): New method. (_cygtls::remove_wq): Reorganize to always close wq.thread_ev if it exists to avoid handle leaks. (sig_clear): Simplify by just calling sigq.clear(). (sig_dispatch_pending): Always call sigq.pending even in signal thread to force another loop in wait_sig. (sig_send): Remove a "goto out" just before out: label. (pending_signals::add): Simplify. (pending_signals::del): Delete. (pending_signals::next): Delete. (wait_sig): Define variable q to be the start of the signal queue. Just iterate through sigq queue, deleting processed or zeroed signals. Only set clearwait when the current signal is SIGCHLD. * sigproc.h: Add a comment about an unused enum.
2013-04-09 09:01:19 +08:00
if (si.si_signo == SIGCONT)
{
tl_entry = cygheap->find_tls (_main_tls);
_main_tls->handle_SIGCONT (tl_entry);
cygheap->unlock_tls (tl_entry);
}
* cygtls.h (_cygtls::reset_signal_arrived): Actually reset the signal_arrived event. (_cygtls::handle_SIGCONT): Declare ew function. * cygwait.cc (is_cw_sig_handle): Delete. (is_cw_sig_cont): New convenience define. (cygwait): Clear signal if is_cw_sig_cont and we got a SIGCONT. * cygwait.h (cw_wait_mask): Add cw_sig_cont. * exceptions.cc (sig_handle_tty_stop): Tighten "incyg" region. Use cw_sig_cont param for cygwait. Don't zero signal here outside of lock. (sigpacket::setup_handler): Don't check for in_forkee since we will now never get here in that state. (_cygtls::handle_SIGCONT): Define new function. (sigpacket::process): Call handle_SIGCONT early to deal with SIGCONT. Nuke continue_now handling. Allow SIGKILL to kill a suspended process. Delete a couple of now-unneeded labels. (_cygtls::call_signal_handler): Reorganize setting of incyg within lock. * sigproc.cc (pending_signals): Simplify. (pending_signals::clear): New method. (_cygtls::remove_wq): Reorganize to always close wq.thread_ev if it exists to avoid handle leaks. (sig_clear): Simplify by just calling sigq.clear(). (sig_dispatch_pending): Always call sigq.pending even in signal thread to force another loop in wait_sig. (sig_send): Remove a "goto out" just before out: label. (pending_signals::add): Simplify. (pending_signals::del): Delete. (pending_signals::next): Delete. (wait_sig): Define variable q to be the start of the signal queue. Just iterate through sigq queue, deleting processed or zeroed signals. Only set clearwait when the current signal is SIGCHLD. * sigproc.h: Add a comment about an unused enum.
2013-04-09 09:01:19 +08:00
/* SIGKILL is special. It always goes through. */
* cygtls.h (_cygtls::reset_signal_arrived): Actually reset the signal_arrived event. (_cygtls::handle_SIGCONT): Declare ew function. * cygwait.cc (is_cw_sig_handle): Delete. (is_cw_sig_cont): New convenience define. (cygwait): Clear signal if is_cw_sig_cont and we got a SIGCONT. * cygwait.h (cw_wait_mask): Add cw_sig_cont. * exceptions.cc (sig_handle_tty_stop): Tighten "incyg" region. Use cw_sig_cont param for cygwait. Don't zero signal here outside of lock. (sigpacket::setup_handler): Don't check for in_forkee since we will now never get here in that state. (_cygtls::handle_SIGCONT): Define new function. (sigpacket::process): Call handle_SIGCONT early to deal with SIGCONT. Nuke continue_now handling. Allow SIGKILL to kill a suspended process. Delete a couple of now-unneeded labels. (_cygtls::call_signal_handler): Reorganize setting of incyg within lock. * sigproc.cc (pending_signals): Simplify. (pending_signals::clear): New method. (_cygtls::remove_wq): Reorganize to always close wq.thread_ev if it exists to avoid handle leaks. (sig_clear): Simplify by just calling sigq.clear(). (sig_dispatch_pending): Always call sigq.pending even in signal thread to force another loop in wait_sig. (sig_send): Remove a "goto out" just before out: label. (pending_signals::add): Simplify. (pending_signals::del): Delete. (pending_signals::next): Delete. (wait_sig): Define variable q to be the start of the signal queue. Just iterate through sigq queue, deleting processed or zeroed signals. Only set clearwait when the current signal is SIGCHLD. * sigproc.h: Add a comment about an unused enum.
2013-04-09 09:01:19 +08:00
if (si.si_signo == SIGKILL)
{
tl_entry = cygheap->find_tls (_main_tls);
tls = _main_tls;
}
* cygtls.h (_cygtls::reset_signal_arrived): Actually reset the signal_arrived event. (_cygtls::handle_SIGCONT): Declare ew function. * cygwait.cc (is_cw_sig_handle): Delete. (is_cw_sig_cont): New convenience define. (cygwait): Clear signal if is_cw_sig_cont and we got a SIGCONT. * cygwait.h (cw_wait_mask): Add cw_sig_cont. * exceptions.cc (sig_handle_tty_stop): Tighten "incyg" region. Use cw_sig_cont param for cygwait. Don't zero signal here outside of lock. (sigpacket::setup_handler): Don't check for in_forkee since we will now never get here in that state. (_cygtls::handle_SIGCONT): Define new function. (sigpacket::process): Call handle_SIGCONT early to deal with SIGCONT. Nuke continue_now handling. Allow SIGKILL to kill a suspended process. Delete a couple of now-unneeded labels. (_cygtls::call_signal_handler): Reorganize setting of incyg within lock. * sigproc.cc (pending_signals): Simplify. (pending_signals::clear): New method. (_cygtls::remove_wq): Reorganize to always close wq.thread_ev if it exists to avoid handle leaks. (sig_clear): Simplify by just calling sigq.clear(). (sig_dispatch_pending): Always call sigq.pending even in signal thread to force another loop in wait_sig. (sig_send): Remove a "goto out" just before out: label. (pending_signals::add): Simplify. (pending_signals::del): Delete. (pending_signals::next): Delete. (wait_sig): Define variable q to be the start of the signal queue. Just iterate through sigq queue, deleting processed or zeroed signals. Only set clearwait when the current signal is SIGCHLD. * sigproc.h: Add a comment about an unused enum.
2013-04-09 09:01:19 +08:00
else if (ISSTATE (myself, PID_STOPPED))
{
rc = -1; /* Don't send signals when stopped */
goto done;
}
else if (!sigtls)
{
tl_entry = cygheap->find_tls (si.si_signo, issig_wait);
if (tl_entry)
{
tls = tl_entry->thread;
sigproc_printf ("using tls %p", tls);
}
}
* DevNotes: Add entry cgf-000013. * cygserver_ipc.h (ipc_set_proc_info): Use _cygtls::ipc_set_proc_info to set per-thread signal arrived value. * cygthread.cc (cygthread::detach): Use per-thread signal_arrived via set_thread_waiting. * fork.cc (_cygtls::fixup_after_fork): Clear signal_arrived. (_cygtls::remove): Close any signal_arrived handle when thread exists. (_cygtls::find_tls): Remove unneeded function. * cygtls.h: Update copyright. (class _cygtls): Reorganize to help avoid rebuilding newlib when structure changes. (_cygtls::event): Delete. (_cygtls::threadkill): Ditto. (_cygtls::signal_waiting): Declare new bool. (_cygtls::find_tls): Delete declaration. (_cygtls::set_threadkill): Ditto. (_cygtls::reset_threadkill): Ditto. (_cygtls::set_signal_arrived): Declare new function. (class set_thread_waiting): Declare new class. * cygwait.cc (cw_nowait_storage): Define. (cygwait): Set per-thread signal_arrived via set_thread_waiting. Don't special-case _main_tls. * cygwait.h (cw_nowait): Define. (cw_infinite): Ditto. (cygwait): Redefine pathological wait-only case. * dcrt0.cc (dll_crt0_0): Remove call to now-defunct events_init(). (dll_crt0_1): Remove call to now-defunct create_signal_arrived(). * exceptions.cc: Reflect set_signal_mask() argument reordering throughout. Remove signal mask synchronization throughout. (events_init): Delete definition. (mask_sync): Delete now-unneeded mask synchronization. (set_signal_mask): Reverse order of arguments to "standard" to, from layout. Rename "newmask" argument to "setmask". Remove debugging. (sig_handle_tty_stop): Use cancelable_wait rather than WFMO. (_cygtls::interrupt_setup): Don't treat "threadkill" events specially. Conditionally set signal_arrived depending on whether the thread has created it or not. (sigpacket::process): Reorganize to reflect thread-specific sending of signals which is more in line with the way it was actually supposed to work. * fhandler_socket.cc (get_inet_addr): Use cancelable_wait rather than IsEventSignalled to avoid potential race. (fhandler_socket::wait_for_events): Set signal_arrived event using set_thread_waiting(). (fhandler_socket::close): Use cygwait for the case of just waiting 10 ms for a signal. * fhandler_tape.cc (fhandler_dev_tape::_lock): Use cancelable_wait rather than WFMO. Redo switch/case tests accordingly. * fhandler_termios.cc (fhandler_termios::bg_check): Use cygwait for case of just waiting 0 ms for a potential signal. * fhandler_tty.cc (fhandler_pty_master::process_slave_output): Use cancelable_wait rather than WFSO. * fhandler_windows.cc (fhandler_windows::read): Set per-thread signal_arrived via set_thread_waiting(). * flock.cc (lf_setlock): Ditto. * select.cc (pselect): Ditto. Set per-thread signal_arrived using set_thread_waiting(). * gendef: Don't special case handling of _cygtls::sig for threads. * gentls_offsets: Use #pragma once in tlsoffsets.h. * ntdll.h: Use #pragma once. * poll.cc: Reflect set_signal_mask() argument reordering. * posix_ipc.cc (ipc_mutex_lock): Use cancelable_wait rather than WFMO. (ipc_cond_timedwait): Set perl-thread signal arrived using set_thread_waiting(). * security.h: Use #pragma once. * signal.cc (abort): Reflect set_signal_mask() argument reordering. (clock_nanosleep): Ditto. Change call to cancelable_wait to properly specify handling of cancel and interrupt. (sigwaitinfo): Remove handling of per-thread event in favor of per-thread signal_arrived. Use cancelable_wait rather than WFSO. * sigproc.cc (signal_arrived): Delete definition. (create_signal_arrived): Ditto. * sigproc.h (signal_arrived): Delete declaration. (set_signal_mask): Avoid defining as a "C" function. Don't conditionally declare. (create_signal_arrived): Delete declaration. * syscalls.cc (rename): Use cygwait() rather than WFSO. * thread.h (fast_mutex::lock): Use cw_infinite rather than LARGE_NULL. * wait.cc (wait4): Ditto. * thread.cc (pthread_mutex::lock): Ditto. (pthread::join): Ditto. (semaphore::_wait): Ditto. (pthread_kill): Remove set_threadkill() accommodation. * tlsoffsets.h: Regenerate.
2012-07-22 06:58:20 +08:00
else
{
tl_entry = cygheap->find_tls (sigtls);
if (tl_entry)
{
tls = tl_entry->thread;
if (sigismember (&tls->sigwait_mask, si.si_signo))
issig_wait = true;
else if (!sigismember (&tls->sigmask, si.si_signo))
issig_wait = false;
else
tls = NULL;
}
}
* cygtls.h (_cygtls::reset_signal_arrived): Actually reset the signal_arrived event. (_cygtls::handle_SIGCONT): Declare ew function. * cygwait.cc (is_cw_sig_handle): Delete. (is_cw_sig_cont): New convenience define. (cygwait): Clear signal if is_cw_sig_cont and we got a SIGCONT. * cygwait.h (cw_wait_mask): Add cw_sig_cont. * exceptions.cc (sig_handle_tty_stop): Tighten "incyg" region. Use cw_sig_cont param for cygwait. Don't zero signal here outside of lock. (sigpacket::setup_handler): Don't check for in_forkee since we will now never get here in that state. (_cygtls::handle_SIGCONT): Define new function. (sigpacket::process): Call handle_SIGCONT early to deal with SIGCONT. Nuke continue_now handling. Allow SIGKILL to kill a suspended process. Delete a couple of now-unneeded labels. (_cygtls::call_signal_handler): Reorganize setting of incyg within lock. * sigproc.cc (pending_signals): Simplify. (pending_signals::clear): New method. (_cygtls::remove_wq): Reorganize to always close wq.thread_ev if it exists to avoid handle leaks. (sig_clear): Simplify by just calling sigq.clear(). (sig_dispatch_pending): Always call sigq.pending even in signal thread to force another loop in wait_sig. (sig_send): Remove a "goto out" just before out: label. (pending_signals::add): Simplify. (pending_signals::del): Delete. (pending_signals::next): Delete. (wait_sig): Define variable q to be the start of the signal queue. Just iterate through sigq queue, deleting processed or zeroed signals. Only set clearwait when the current signal is SIGCHLD. * sigproc.h: Add a comment about an unused enum.
2013-04-09 09:01:19 +08:00
/* !tls means no threads available to catch a signal. */
if (!tls)
{
sigproc_printf ("signal %d blocked", si.si_signo);
rc = -1;
goto done;
* DevNotes: Add entry cgf-000013. * cygserver_ipc.h (ipc_set_proc_info): Use _cygtls::ipc_set_proc_info to set per-thread signal arrived value. * cygthread.cc (cygthread::detach): Use per-thread signal_arrived via set_thread_waiting. * fork.cc (_cygtls::fixup_after_fork): Clear signal_arrived. (_cygtls::remove): Close any signal_arrived handle when thread exists. (_cygtls::find_tls): Remove unneeded function. * cygtls.h: Update copyright. (class _cygtls): Reorganize to help avoid rebuilding newlib when structure changes. (_cygtls::event): Delete. (_cygtls::threadkill): Ditto. (_cygtls::signal_waiting): Declare new bool. (_cygtls::find_tls): Delete declaration. (_cygtls::set_threadkill): Ditto. (_cygtls::reset_threadkill): Ditto. (_cygtls::set_signal_arrived): Declare new function. (class set_thread_waiting): Declare new class. * cygwait.cc (cw_nowait_storage): Define. (cygwait): Set per-thread signal_arrived via set_thread_waiting. Don't special-case _main_tls. * cygwait.h (cw_nowait): Define. (cw_infinite): Ditto. (cygwait): Redefine pathological wait-only case. * dcrt0.cc (dll_crt0_0): Remove call to now-defunct events_init(). (dll_crt0_1): Remove call to now-defunct create_signal_arrived(). * exceptions.cc: Reflect set_signal_mask() argument reordering throughout. Remove signal mask synchronization throughout. (events_init): Delete definition. (mask_sync): Delete now-unneeded mask synchronization. (set_signal_mask): Reverse order of arguments to "standard" to, from layout. Rename "newmask" argument to "setmask". Remove debugging. (sig_handle_tty_stop): Use cancelable_wait rather than WFMO. (_cygtls::interrupt_setup): Don't treat "threadkill" events specially. Conditionally set signal_arrived depending on whether the thread has created it or not. (sigpacket::process): Reorganize to reflect thread-specific sending of signals which is more in line with the way it was actually supposed to work. * fhandler_socket.cc (get_inet_addr): Use cancelable_wait rather than IsEventSignalled to avoid potential race. (fhandler_socket::wait_for_events): Set signal_arrived event using set_thread_waiting(). (fhandler_socket::close): Use cygwait for the case of just waiting 10 ms for a signal. * fhandler_tape.cc (fhandler_dev_tape::_lock): Use cancelable_wait rather than WFMO. Redo switch/case tests accordingly. * fhandler_termios.cc (fhandler_termios::bg_check): Use cygwait for case of just waiting 0 ms for a potential signal. * fhandler_tty.cc (fhandler_pty_master::process_slave_output): Use cancelable_wait rather than WFSO. * fhandler_windows.cc (fhandler_windows::read): Set per-thread signal_arrived via set_thread_waiting(). * flock.cc (lf_setlock): Ditto. * select.cc (pselect): Ditto. Set per-thread signal_arrived using set_thread_waiting(). * gendef: Don't special case handling of _cygtls::sig for threads. * gentls_offsets: Use #pragma once in tlsoffsets.h. * ntdll.h: Use #pragma once. * poll.cc: Reflect set_signal_mask() argument reordering. * posix_ipc.cc (ipc_mutex_lock): Use cancelable_wait rather than WFMO. (ipc_cond_timedwait): Set perl-thread signal arrived using set_thread_waiting(). * security.h: Use #pragma once. * signal.cc (abort): Reflect set_signal_mask() argument reordering. (clock_nanosleep): Ditto. Change call to cancelable_wait to properly specify handling of cancel and interrupt. (sigwaitinfo): Remove handling of per-thread event in favor of per-thread signal_arrived. Use cancelable_wait rather than WFSO. * sigproc.cc (signal_arrived): Delete definition. (create_signal_arrived): Ditto. * sigproc.h (signal_arrived): Delete declaration. (set_signal_mask): Avoid defining as a "C" function. Don't conditionally declare. (create_signal_arrived): Delete declaration. * syscalls.cc (rename): Use cygwait() rather than WFSO. * thread.h (fast_mutex::lock): Use cw_infinite rather than LARGE_NULL. * wait.cc (wait4): Ditto. * thread.cc (pthread_mutex::lock): Ditto. (pthread::join): Ditto. (semaphore::_wait): Ditto. (pthread_kill): Remove set_threadkill() accommodation. * tlsoffsets.h: Regenerate.
2012-07-22 06:58:20 +08:00
}
/* Do stuff for gdb */
if ((HANDLE) *tls)
tls->signal_debugger (si);
tls->lock ();
if (issig_wait && tls->sigwait_mask != 0)
{
tls->sigwait_mask = 0;
tls->unlock ();
goto dosig;
}
tls->unlock ();
if (handler == SIG_IGN)
{
if (si.si_code == SI_TIMER)
((timer_tracker *) si.si_tid)->disarm_overrun_event ();
sigproc_printf ("signal %d ignored", si.si_signo);
goto done;
}
* cygwin/include/signal.h: Add copyright notice. * cygwin.din: Make clock SIGFE. Add clock_gettime, sigwaitinfo, timer_create, timer_delete, timer_settime. * include/cygwin/version.h: Reflect above additions. * fork.cc (fork_child): Call fixup_timers_after_fork. * signal.cc (sigwait): Remove unused variable. * timer.cc: New file. (clock_gettime): Define new function. (timer_tracker): Define new struct used by timer functions. (timer_tracker::timer_tracker): New function. (to_us): New function. (timer_thread): New function. (timer_tracker::settime): New function. (timer_create): New function. (timer_settime): New function. (timer_delete): New function. (fixup_timers_after_fork): New function. * cygthread.cc: Bump thread count. * signal.cc (sigwaitinfo): Define new function. (sigwait): Redefine based on sigwaitinfo. * include/cygwin/signal.h (sigwaitinfo): Declare. (sigwait): Ditto. * dtable.cc (dtable::vfork_parent_restore): Avoid double close of ctty when ctty == ctty_on_hold. * cygtls.h (_threadinfo::threadkill): New element. (_threadinfo::set_threadkill): Declare new function. (_threadinfo::reset_threadkill): Declare new function. * dcrt0.cc (dcrt0_1): Call here so that it will be possible to attach to running process with #(*& Windows Me/9x. (initial_env): Try to initialize strace if uninitialized. * gendef: Don't zero signal if threadkill is set since that will happen in the called function. * signal.cc (sigwait): Ensure cleanup in error conditions. * sigproc.cc (sig_send): Clear packet mask storage. (wait_subproc): Fill in child exit code in siginfo_t structure. * thread.cc (pthread_kill): Set threadkill flag. * tlsoffsets.h: Regenerate. Throughout, use siginfo_t to fill out all signal information for "kernel" signals. * cygtls.h (_threadinfo::set_siginfo): Declare new function. * cygtls.cc (_threadinfo::set_siginfo): Define new function. * dcrt0.cc (do_exit): Accommodate siginfo_t considerations. * exceptions.cc (handle_exceptions): Ditto. (sig_handle_tty_stop): Ditto. (ctrl_c_handler): Use killsys() to send signal. (sigpacket::process): Rename from sig_handle. Use siginfo_t field from sigpacket for everything. (tty_min::kill_pgrp): Accommodate siginfo_t considerations. (fhandler_termios::bg_check): Ditto. * fhandler_tty.cc (fhandler_tty_slave::ioctl): Use killsys() to send signal. * signal.cc (kill_worker): Rewrite to use siginfo_t second argument. (kill_pgrp): Ditto. (kill0): Define new function pulled from kill(). (kill): Rewrite as frontend to kill0. (killsys): Define new function. * sigproc.cc (sigelem): Eliminate. (sigpacket): Move to sigproc.h. Subsume sigelem. (pending_signals): Use sigpacket rather than sigelem for everything. (sig_clear): Ditto. (wait_sig): Ditto. (sig_send): Rewrite to use siginfo_t argument. (sig_send): New function wratpper to sig_send with siginfo_t argument. (wait_subproc): Accommodate siginfo_t considerations. * thread.cc (pthread_kill): Ditto. * sigproc.h (sigpacket): Move here. (sigpacket::process): Declare "new" function. (sig_handle): Eliminate declaration. (sig_send): Declare with new paramaters. (killsys): Declare new function. (kill_pgrp): Declare. * winsup.h: Move some signal-specific stuff to sigproc.h. * include/cygwin/signal.h: Tweak some siginfo_t stuff.
2004-01-19 13:46:54 +08:00
if (si.si_signo == SIGKILL)
goto exit_sig;
if (si.si_signo == SIGSTOP)
* devices.cc: New file. * devices.gperf: New file. * devices.shilka: New file. * cygwin-gperf: New file. * cygwin-shilka: New file. * fhandler_fifo.cc: New file. * fhandler_nodevice.cc : New file. Reorganize headers so that path.h precedes fhandler.h throughout. Remove device argument and unit arguments from fhandler constructors throughout. Remove pc arguments to fhandler functions and use internal pc element instead, throughout. Use dev element in pc throughout. Use major/minor elements rather than units and device numbers previously in fhandler class. Use correct methods for fhandler file names rather than directly accessing file name variables, throughout. * Makefile.in (DLL_OFILES): Add devices.o, fhandler_fifo.o * dcrt0.cc (dll_crt0_1): Call device::init. * devices.h: Renumber devices based on more Linux-like major/minor numbers. Add more devices. Declare standard device storage. (device): Declare struct. * dir.cc (opendir): Use new 'build_fh_name' to construct a fhandler_* type. * dtable.cc (dtable::get_debugger_info): Ditto. (cygwin_attach_handle_to_fd): Ditto. (dtable::release): Remove special FH_SOCKET case in favor of generic "need_fixup_before" test. (dtable::init_std_file_from_handle): Use either build_fh_dev or build_fh_name to build standard fhandler. (dtable::build_fh_name): Renamed from dtable::build_fhandler_from_name. Move out of dtable class. Don't accept a path_conv argument. Just build it here and pass it to: (build_fh_pc): Renamed from dtable::build_fhandler. Move out of dtable class. Use intrinsic device type in path_conv to create new fhandler. (build_fh_dev): Renamed from dtable::build_fhandler. Move out of dtable class. Simplify arguments to just take new 'device' type and a name. Just return pointer to fhandler rather than trying to insert into dtable. (dtable::dup_worker): Accommodate above build_fh name changes. (dtable::find_fifo): New (currently broken) function. (handle_to_fn): Use strechr for efficiency. * dtable.h: Reflect above build_fh name changes and argument differences. (fhandler_base *&operator []): Return self rather than copy of self. * fhandler.cc (fhandler_base::operator =): Use pc element to set normalized path. (fhandler_base::set_name): Ditto. (fhandler_base::raw_read): Use method to access name. (fhandler_base::write): Correctly use get_output_handle rather than get_handle. (handler_base::device_access_denied): New function. (fhandler_base::open): Eliminate pc argument and use pc element of fhandler_base throughout. (fhandler_base::fstat): Detect if device is based in filesystem and use fstat_fs to calculate stat, if so. (fhandler_base::fhandler_base): Eliminate handling of file names and, instead, just free appropriate component from pc. (fhandler_base::opendir): Remove path_conv parameter. * fhandler.h: Remove all device flags. (fhandler_base::pc): New element. (fhandler_base::set_name): Change argument to path_conv. (fhandler_base::error): New function. (fhandler_base::exists): New function. (fhandler_base::pc_binmode): New function. (fhandler_base::dev): New function. (fhandler_base::open_fs): New function. (fhandler_base::fstat_fs): New function. (fhandler_base::fstat_by_name): New function. (fhandler_base::fstat_by_handle): New function. (fhandler_base::isfifo): New function. (fhandler_base::is_slow): New function. (fhandler_base::is_auto_device): New function. (fhandler_base::is_fs_special): New function. (fhandler_base::device_access_denied): New function. (fhandler_base::operator DWORD&): New operator. (fhandler_base::get_name): Return normalized path from pc. (fhandler_base::get_win32_name): Return windows path from pc. (fhandler_base::isdevice): Renamed from is_device. (fhandler_base::get_native_name): Return device format. (fhandler_fifo): New class. (fhandler_nodevice): New class. (select_stuff::device_specific): Remove array. (select_stuff::device_specific_pipe): New class element. (select_stuff::device_specific_socket): New class element. (select_stuff::device_specific_serial): New class element. (select_stuff::select_stuff): Initialize new elements. * fhandler_disk_file.cc (fhandler_base::fstat_by_handle): Move to base class from fhandler_disk_file. (fhandler_base::fstat_by_name): Ditto. (fhandler_base::fstat_by_name): Ditto. (fhandler_disk_file::open): Move most functionality into fhandler_base::open_fs. (fhandler_base::open_fs): New function. (fhandler_disk_file::close): Move most functionality into fhandler_base::close_fs. (fhandler_base::close_fs): New function. * fhandler_mem.cc (fhandler_dev_mem::open): Use device name in debugging output. * fhandler_socket.cc (fhandler_socket::set_connect_secret): Copy standard urandom device into appropriate place. (fhandler_socket::accept): Reflect change in fdsock return value. * fhandler_tty.cc: See "throughouts" above. * net.cc: Accommodate fdsock change throughout. (fdsock): Return success or failure, accept fd argument and device argument. * path.cc (symlink_info::major): New element. (symlink_info::minor): New element. (symlink_info::parse_device): Declare new function. (fs_info::update): Accommodate changes in path_conv class. (path_conv::fillin): Ditto. (path_conv::return_and_clear_normalized_path): Eliminate. (path_conv::set_normalized_path): New function. (path_conv::path_conv): Set info in dev element. Use path_conv methods Check for FH_FS rather than FH_BAD to indicate when to fill in filesystem stuff. where appropriate rather than direct access. Use set_normalized_path to set normalized path. (windows_device_names): Eliminate. (get_dev): Ditto. (get_raw_device_number): Ditto. (get_device_number): Ditto. (win32_device_name): Call new device name parser to do most of the heavy lifting. (mount_info::conv_to_win32_path): Fill in dev field as appropriate. (symlink_worker): Handle new device files. (symlink_info::check): Ditto. (symlink_info::parse_device): Define new function. * path.h (executable_states): Move here from fhandler.h. (fs_info): Rename variables to *_storage and create methods for accessing same. (path_conv): Add dev element, remove devn and unit and adjust inline methods to accommodate. (set_normalized_path): Declare new function. * pinfo.cc (_pinfo::commune_recv): Add broken support for handling fifos. (_pinfo::commune_send): Ditto. * pipe.cc (fhandler_pipe::close): check for existence of handle before closing it. (handler_pipe::create): Rename from make_pipe. Change arguments to accept fhandler_pipe array. Accommodate fifos. (pipe): Rework to deal with fhandler_pipe::create changes. (_pipe): Ditto. * select.cc: Use individual device_specific types throughout rather than indexing with obsolete device number. (set_bits): Use is_socket call rather than checking device number. * shared_info.h (CURR_MOUNT_MAGIC): Update. (conv_to_win32_path): Reflect addition of device argument. * syscalls.cc (mknod_worker): New function. (open): Use build_fh_name to build fhandler. (chown_worker): Detect if this is an 'auto' device rather than an on-filesystem device and handle appropriately. (chmod_device): New function. (chmod): Detect if this is an 'auto' device rather than an on-filesystem device and handle appropriately. Use chmod_device to set mode of in-filesystem devices. (stat_worker): Eliminate path_conv argument. Call build_fh_name to construct fhandler. Use fh->error() rather than pc->error to detect errors in fhandler construction. (access_worker): New function pulled from access. Accommodate in-filesystem devices. (access): Use access_worker. (fpathconf): Detect if this is an 'auto' device rather than an on-filesystem device and handle appropriately. (mknod_worker): New function. (mknod32): New function. (chroot): Free normalized path -- assuming it was actually cmalloced. * tty.cc (create_tty_master): Tweak for new device class. (tty::common_init): Ditto. * winsup.h (stat_worker): Remove. (symlink_worker): Declare. * exceptions.cc (set_process_mask): Just call sig_dispatch_pending and don't worry about pending_signals since sig_dispatch_pending should always do the right thing now. (sig_handle): Reorganize SIGCONT handling to more closely conform to SUSv3. * pinfo.h: Move __SIG enum to sigproc.h. (PICOM_FIFO): New enum element. (_pinfo): Remove 'thread2signal' stuff throughout class. (_pinfo::commune_send): Make varargs. (_pinfo::sigtodo): Eliminate. (_pinfo::thread2signal): Ditto. * signal.cc (kill_worker): Eliminate call to setthread2signal. * sigproc.cc (local_sigtodo): Eliminate. (getlocal_sigtodo): Ditto. (sigelem): New class. (pending_signals): New class. (sigqueue): New variable, start of sigqueue linked list. (sigcatch_nonmain): Eliminate. (sigcatch_main): Eliminate. (sigcatch_nosync): Eliminate. (sigcomplete_nonmain): Eliminate. (pending_signals): Eliminate. (sig_clear): Call signal thread to clear pending signals, unless already in signal thread. (sigpending): Call signal thread to get pending signals. (sig_dispatch_pending): Eliminate use of pending_signals and just check sigqueue. (sigproc_terminate): Eliminate all of the obsolete semaphore stuff. Close signal pipe handle. (sig_send): Eliminate all of the obsolete semaphore stuff and use pipe to send signals. (getevent): Eliminate. (pending_signals::add): New function. (pending_signals::del): New function. (pending_signals::next): New function. (wait_sig): Eliminate all of the obsolete semaphore stuff. Use pipe to communicate and maintain a linked list of signals. * sigproc.h: Move __SIG defines here. Add __SIGPENDING. (sig_dispatch_pending): Remove "C" specifier. (sig_handle): Accept a mask argument. * thread.cc: Remove signal handling considerations throughout.
2003-09-25 08:37:18 +08:00
{
* cygwin/include/signal.h: Add copyright notice. * cygwin.din: Make clock SIGFE. Add clock_gettime, sigwaitinfo, timer_create, timer_delete, timer_settime. * include/cygwin/version.h: Reflect above additions. * fork.cc (fork_child): Call fixup_timers_after_fork. * signal.cc (sigwait): Remove unused variable. * timer.cc: New file. (clock_gettime): Define new function. (timer_tracker): Define new struct used by timer functions. (timer_tracker::timer_tracker): New function. (to_us): New function. (timer_thread): New function. (timer_tracker::settime): New function. (timer_create): New function. (timer_settime): New function. (timer_delete): New function. (fixup_timers_after_fork): New function. * cygthread.cc: Bump thread count. * signal.cc (sigwaitinfo): Define new function. (sigwait): Redefine based on sigwaitinfo. * include/cygwin/signal.h (sigwaitinfo): Declare. (sigwait): Ditto. * dtable.cc (dtable::vfork_parent_restore): Avoid double close of ctty when ctty == ctty_on_hold. * cygtls.h (_threadinfo::threadkill): New element. (_threadinfo::set_threadkill): Declare new function. (_threadinfo::reset_threadkill): Declare new function. * dcrt0.cc (dcrt0_1): Call here so that it will be possible to attach to running process with #(*& Windows Me/9x. (initial_env): Try to initialize strace if uninitialized. * gendef: Don't zero signal if threadkill is set since that will happen in the called function. * signal.cc (sigwait): Ensure cleanup in error conditions. * sigproc.cc (sig_send): Clear packet mask storage. (wait_subproc): Fill in child exit code in siginfo_t structure. * thread.cc (pthread_kill): Set threadkill flag. * tlsoffsets.h: Regenerate. Throughout, use siginfo_t to fill out all signal information for "kernel" signals. * cygtls.h (_threadinfo::set_siginfo): Declare new function. * cygtls.cc (_threadinfo::set_siginfo): Define new function. * dcrt0.cc (do_exit): Accommodate siginfo_t considerations. * exceptions.cc (handle_exceptions): Ditto. (sig_handle_tty_stop): Ditto. (ctrl_c_handler): Use killsys() to send signal. (sigpacket::process): Rename from sig_handle. Use siginfo_t field from sigpacket for everything. (tty_min::kill_pgrp): Accommodate siginfo_t considerations. (fhandler_termios::bg_check): Ditto. * fhandler_tty.cc (fhandler_tty_slave::ioctl): Use killsys() to send signal. * signal.cc (kill_worker): Rewrite to use siginfo_t second argument. (kill_pgrp): Ditto. (kill0): Define new function pulled from kill(). (kill): Rewrite as frontend to kill0. (killsys): Define new function. * sigproc.cc (sigelem): Eliminate. (sigpacket): Move to sigproc.h. Subsume sigelem. (pending_signals): Use sigpacket rather than sigelem for everything. (sig_clear): Ditto. (wait_sig): Ditto. (sig_send): Rewrite to use siginfo_t argument. (sig_send): New function wratpper to sig_send with siginfo_t argument. (wait_subproc): Accommodate siginfo_t considerations. * thread.cc (pthread_kill): Ditto. * sigproc.h (sigpacket): Move here. (sigpacket::process): Declare "new" function. (sig_handle): Eliminate declaration. (sig_send): Declare with new paramaters. (killsys): Declare new function. (kill_pgrp): Declare. * winsup.h: Move some signal-specific stuff to sigproc.h. * include/cygwin/signal.h: Tweak some siginfo_t stuff.
2004-01-19 13:46:54 +08:00
sig_clear (SIGCONT);
goto stop;
}
/* Clear pending SIGCONT on stop signals */
if (si.si_signo == SIGTSTP || si.si_signo == SIGTTIN
|| si.si_signo == SIGTTOU)
* cygwin/include/signal.h: Add copyright notice. * cygwin.din: Make clock SIGFE. Add clock_gettime, sigwaitinfo, timer_create, timer_delete, timer_settime. * include/cygwin/version.h: Reflect above additions. * fork.cc (fork_child): Call fixup_timers_after_fork. * signal.cc (sigwait): Remove unused variable. * timer.cc: New file. (clock_gettime): Define new function. (timer_tracker): Define new struct used by timer functions. (timer_tracker::timer_tracker): New function. (to_us): New function. (timer_thread): New function. (timer_tracker::settime): New function. (timer_create): New function. (timer_settime): New function. (timer_delete): New function. (fixup_timers_after_fork): New function. * cygthread.cc: Bump thread count. * signal.cc (sigwaitinfo): Define new function. (sigwait): Redefine based on sigwaitinfo. * include/cygwin/signal.h (sigwaitinfo): Declare. (sigwait): Ditto. * dtable.cc (dtable::vfork_parent_restore): Avoid double close of ctty when ctty == ctty_on_hold. * cygtls.h (_threadinfo::threadkill): New element. (_threadinfo::set_threadkill): Declare new function. (_threadinfo::reset_threadkill): Declare new function. * dcrt0.cc (dcrt0_1): Call here so that it will be possible to attach to running process with #(*& Windows Me/9x. (initial_env): Try to initialize strace if uninitialized. * gendef: Don't zero signal if threadkill is set since that will happen in the called function. * signal.cc (sigwait): Ensure cleanup in error conditions. * sigproc.cc (sig_send): Clear packet mask storage. (wait_subproc): Fill in child exit code in siginfo_t structure. * thread.cc (pthread_kill): Set threadkill flag. * tlsoffsets.h: Regenerate. Throughout, use siginfo_t to fill out all signal information for "kernel" signals. * cygtls.h (_threadinfo::set_siginfo): Declare new function. * cygtls.cc (_threadinfo::set_siginfo): Define new function. * dcrt0.cc (do_exit): Accommodate siginfo_t considerations. * exceptions.cc (handle_exceptions): Ditto. (sig_handle_tty_stop): Ditto. (ctrl_c_handler): Use killsys() to send signal. (sigpacket::process): Rename from sig_handle. Use siginfo_t field from sigpacket for everything. (tty_min::kill_pgrp): Accommodate siginfo_t considerations. (fhandler_termios::bg_check): Ditto. * fhandler_tty.cc (fhandler_tty_slave::ioctl): Use killsys() to send signal. * signal.cc (kill_worker): Rewrite to use siginfo_t second argument. (kill_pgrp): Ditto. (kill0): Define new function pulled from kill(). (kill): Rewrite as frontend to kill0. (killsys): Define new function. * sigproc.cc (sigelem): Eliminate. (sigpacket): Move to sigproc.h. Subsume sigelem. (pending_signals): Use sigpacket rather than sigelem for everything. (sig_clear): Ditto. (wait_sig): Ditto. (sig_send): Rewrite to use siginfo_t argument. (sig_send): New function wratpper to sig_send with siginfo_t argument. (wait_subproc): Accommodate siginfo_t considerations. * thread.cc (pthread_kill): Ditto. * sigproc.h (sigpacket): Move here. (sigpacket::process): Declare "new" function. (sig_handle): Eliminate declaration. (sig_send): Declare with new paramaters. (killsys): Declare new function. (kill_pgrp): Declare. * winsup.h: Move some signal-specific stuff to sigproc.h. * include/cygwin/signal.h: Tweak some siginfo_t stuff.
2004-01-19 13:46:54 +08:00
sig_clear (SIGCONT);
2000-02-18 03:38:33 +08:00
if (handler == (void *) SIG_DFL)
{
if (si.si_signo == SIGCHLD || si.si_signo == SIGIO
|| si.si_signo == SIGCONT || si.si_signo == SIGWINCH
* cygwin/include/signal.h: Add copyright notice. * cygwin.din: Make clock SIGFE. Add clock_gettime, sigwaitinfo, timer_create, timer_delete, timer_settime. * include/cygwin/version.h: Reflect above additions. * fork.cc (fork_child): Call fixup_timers_after_fork. * signal.cc (sigwait): Remove unused variable. * timer.cc: New file. (clock_gettime): Define new function. (timer_tracker): Define new struct used by timer functions. (timer_tracker::timer_tracker): New function. (to_us): New function. (timer_thread): New function. (timer_tracker::settime): New function. (timer_create): New function. (timer_settime): New function. (timer_delete): New function. (fixup_timers_after_fork): New function. * cygthread.cc: Bump thread count. * signal.cc (sigwaitinfo): Define new function. (sigwait): Redefine based on sigwaitinfo. * include/cygwin/signal.h (sigwaitinfo): Declare. (sigwait): Ditto. * dtable.cc (dtable::vfork_parent_restore): Avoid double close of ctty when ctty == ctty_on_hold. * cygtls.h (_threadinfo::threadkill): New element. (_threadinfo::set_threadkill): Declare new function. (_threadinfo::reset_threadkill): Declare new function. * dcrt0.cc (dcrt0_1): Call here so that it will be possible to attach to running process with #(*& Windows Me/9x. (initial_env): Try to initialize strace if uninitialized. * gendef: Don't zero signal if threadkill is set since that will happen in the called function. * signal.cc (sigwait): Ensure cleanup in error conditions. * sigproc.cc (sig_send): Clear packet mask storage. (wait_subproc): Fill in child exit code in siginfo_t structure. * thread.cc (pthread_kill): Set threadkill flag. * tlsoffsets.h: Regenerate. Throughout, use siginfo_t to fill out all signal information for "kernel" signals. * cygtls.h (_threadinfo::set_siginfo): Declare new function. * cygtls.cc (_threadinfo::set_siginfo): Define new function. * dcrt0.cc (do_exit): Accommodate siginfo_t considerations. * exceptions.cc (handle_exceptions): Ditto. (sig_handle_tty_stop): Ditto. (ctrl_c_handler): Use killsys() to send signal. (sigpacket::process): Rename from sig_handle. Use siginfo_t field from sigpacket for everything. (tty_min::kill_pgrp): Accommodate siginfo_t considerations. (fhandler_termios::bg_check): Ditto. * fhandler_tty.cc (fhandler_tty_slave::ioctl): Use killsys() to send signal. * signal.cc (kill_worker): Rewrite to use siginfo_t second argument. (kill_pgrp): Ditto. (kill0): Define new function pulled from kill(). (kill): Rewrite as frontend to kill0. (killsys): Define new function. * sigproc.cc (sigelem): Eliminate. (sigpacket): Move to sigproc.h. Subsume sigelem. (pending_signals): Use sigpacket rather than sigelem for everything. (sig_clear): Ditto. (wait_sig): Ditto. (sig_send): Rewrite to use siginfo_t argument. (sig_send): New function wratpper to sig_send with siginfo_t argument. (wait_subproc): Accommodate siginfo_t considerations. * thread.cc (pthread_kill): Ditto. * sigproc.h (sigpacket): Move here. (sigpacket::process): Declare "new" function. (sig_handle): Eliminate declaration. (sig_send): Declare with new paramaters. (killsys): Declare new function. (kill_pgrp): Declare. * winsup.h: Move some signal-specific stuff to sigproc.h. * include/cygwin/signal.h: Tweak some siginfo_t stuff.
2004-01-19 13:46:54 +08:00
|| si.si_signo == SIGURG)
2000-02-18 03:38:33 +08:00
{
if (si.si_code == SI_TIMER)
((timer_tracker *) si.si_tid)->disarm_overrun_event ();
sigproc_printf ("signal %d default is currently ignore", si.si_signo);
2000-02-18 03:38:33 +08:00
goto done;
}
if (si.si_signo == SIGTSTP || si.si_signo == SIGTTIN
|| si.si_signo == SIGTTOU)
2000-02-18 03:38:33 +08:00
goto stop;
goto exit_sig;
}
if (handler == (void *) SIG_ERR)
goto exit_sig;
goto dosig;
stop:
if (tls != _main_tls)
{
cygheap->unlock_tls (tl_entry);
tl_entry = cygheap->find_tls (_main_tls);
tls = _main_tls;
}
2000-02-18 03:38:33 +08:00
handler = (void *) sig_handle_tty_stop;
thissig = global_sigs[SIGSTOP];
* cygtls.h (_cygtls::signal_exit): Delete from class. * exception.h (cygwin_exception): New class. (cygwin_exception::dumpstack): Declare new function. (cygwin_exception::context): Ditto. (cygwin_exception::dump_exception): Ditto. * exceptions.cc (cygwin_exception::dump_exception): Move into cygwin_exception class. Accommodate new variable names. (cygwin_exception::dumpstack): Ditto stackdump -> dumpstack. (exception::handle): Move andreas processing earlier. Defer signal processing decisions to the signal thread where they belong. Pass exception information to sig_send via new siginfo_t si_cyg field. (ctrl_c_handler): Wait for SIGHUP signal to be processed since it could cause a process exit and we don't want races with thread exit lock. (signal_exit): Move back here from sigproc.cc. Modify arguments and remove from sigpacket class. Decide when to dump core based on signal type. (sigpacket::process): Handle exiting signals in context of threads rather than in the signal thread. Signal debugger on non-Windows signals. Remove setup_signal_exit call. * sigproc.cc (no_signals_available): Remove argument. (signal_exit_code): Delete. (close_my_readsig): Ditto. (_cygtls::signal_exit): Move to exceptions.cc. (sigproc_terminate): Don't attempt to terminate signal thread. (setup_signal_exit): Delete. (exit_thread): Use new si_cyg entry in siginfo_t. (sig_send): Just use empty initializer for si. Accommodate change in no_signals_available argument. (wait_sig): Remove attempt to "go asynchronous" on process exit. Delete __SIGEXIT handling. Don't ever exit. * sigproc.h: Remove __SIGEXIT from signal enum. Renumber. * include/cygwin/signal.h (siginfo_t): Add si_cyg entry.
2013-01-03 02:34:06 +08:00
goto dosig;
exit_sig:
handler = (void *) signal_exit;
thissig.sa_flags |= SA_SIGINFO;
/* Don't run signal_exit on alternate stack. */
thissig.sa_flags &= ~SA_ONSTACK;
2000-02-18 03:38:33 +08:00
dosig:
if (have_execed)
{
sigproc_printf ("terminating captive process");
if (::cygheap->ctty)
::cygheap->ctty->cleanup_before_exit ();
TerminateProcess (ch_spawn, sigExeced = si.si_signo);
}
* cygtls.h (_cygtls::signal_exit): Delete from class. * exception.h (cygwin_exception): New class. (cygwin_exception::dumpstack): Declare new function. (cygwin_exception::context): Ditto. (cygwin_exception::dump_exception): Ditto. * exceptions.cc (cygwin_exception::dump_exception): Move into cygwin_exception class. Accommodate new variable names. (cygwin_exception::dumpstack): Ditto stackdump -> dumpstack. (exception::handle): Move andreas processing earlier. Defer signal processing decisions to the signal thread where they belong. Pass exception information to sig_send via new siginfo_t si_cyg field. (ctrl_c_handler): Wait for SIGHUP signal to be processed since it could cause a process exit and we don't want races with thread exit lock. (signal_exit): Move back here from sigproc.cc. Modify arguments and remove from sigpacket class. Decide when to dump core based on signal type. (sigpacket::process): Handle exiting signals in context of threads rather than in the signal thread. Signal debugger on non-Windows signals. Remove setup_signal_exit call. * sigproc.cc (no_signals_available): Remove argument. (signal_exit_code): Delete. (close_my_readsig): Ditto. (_cygtls::signal_exit): Move to exceptions.cc. (sigproc_terminate): Don't attempt to terminate signal thread. (setup_signal_exit): Delete. (exit_thread): Use new si_cyg entry in siginfo_t. (sig_send): Just use empty initializer for si. Accommodate change in no_signals_available argument. (wait_sig): Remove attempt to "go asynchronous" on process exit. Delete __SIGEXIT handling. Don't ever exit. * sigproc.h: Remove __SIGEXIT from signal enum. Renumber. * include/cygwin/signal.h (siginfo_t): Add si_cyg entry.
2013-01-03 02:34:06 +08:00
/* Dispatch to the appropriate function. */
sigproc_printf ("signal %d, signal handler %p", si.si_signo, handler);
rc = setup_handler (handler, thissig, tls);
2000-02-18 03:38:33 +08:00
done:
cygheap->unlock_tls (tl_entry);
2000-02-18 03:38:33 +08:00
sigproc_printf ("returning %d", rc);
return rc;
}
static void
altstack_wrapper (int sig, siginfo_t *siginfo, ucontext_t *sigctx,
void (*handler) (int, siginfo_t *, void *))
{
siginfo_t si = *siginfo;
ULONG guard_size = 0;
DWORD old_prot = (DWORD) -1;
PTEB teb = NtCurrentTeb ();
PVOID old_limit = NULL;
/* Check if we're just handling a stack overflow. If so... */
if (sig == SIGSEGV && si.si_cyg
&& ((cygwin_exception *) si.si_cyg)->exception_record ()->ExceptionCode
== (DWORD) STATUS_STACK_OVERFLOW)
{
/* ...restore guard pages in original stack as if MSVCRT::_resetstkovlw
has been called.
Compute size of guard pages. If SetThreadStackGuarantee returns 0,
use the default guard page size. */
SetThreadStackGuarantee (&guard_size);
if (!guard_size)
guard_size = wincap.def_guard_page_size ();
else
guard_size += wincap.page_size ();
old_limit = teb->Tib.StackLimit;
/* Amazing but true: This VirtualProtect call automatically fixes the
value of teb->Tib.StackLimit on some systems.*/
if (VirtualProtect (teb->Tib.StackLimit, guard_size,
PAGE_READWRITE | PAGE_GUARD, &old_prot)
&& old_limit == teb->Tib.StackLimit)
teb->Tib.StackLimit = (caddr_t) old_limit + guard_size;
}
handler (sig, &si, sigctx);
if (old_prot != (DWORD) -1)
{
/* Typically the handler would exit or at least perform a siglongjmp
trying to overcome a SEGV condition. However, if we return from a
segv handler after a stack overflow, we're dead. While on Linux the
process returns to the offending code and thus the handler is called
ad infinitum, on Windows the NTDLL::__stkchk function will simply kill
the process. So what we do here is to remove the guard pages again so
we can return to exception::handle. exception::handle will then call
sig_send again, this time with SIG_DFL action, so at least we get a
stackdump. */
if (VirtualProtect ((caddr_t) teb->Tib.StackLimit - guard_size,
guard_size, old_prot, &old_prot))
teb->Tib.StackLimit = old_limit;
}
}
Rename _threadinfo to _cygtls, throughout. * cygtls.h (_cygtls::call_signal_handler): Rename from call_signal_handler_now. (_cygtls::push): Make second argument mandatory. (_cygtls::fixup_after_fork): Declare new function. (_cygtls::lock): Ditto. * cygtls.cc (_cygtls::fixup_after_fork): Define new function. * dcrt0.cc (cygwin_finished_initializing): Define as bool. (alloc_stack): Use _tlstop rather than arbitrary variable in probably vain attempt to avoid strange fork problem on CTRL-C. (dll_crt0_0): Remove obsolete winpids::init call. * dll_init.cc (dll_dllcrt0): Detect forkee condition as equivalent to initializing. * winsup.h (cygwin_finished_initializing): Declare as bool. * exceptions.cc (handle_exceptions): Rely on cygwin_finished_initializing to determine how to handle exception during process startup. (_cygtls::call_signal_handler): Rename from call_signal_handler_now. (_cygtls::interrupt_now): Fill in second argument to push. (signal_fixup_after_fork): Eliminate. (setup_handler): Initialize locked to avoid potential inappropriate unlock. Resume thread if it has acquired the stack lock. (ctrl_c_handler): Just exit if ctrl-c is hit before cygiwn has finished initializing. * fork.cc (sync_with_child): Don't call abort since it can cause exit deadlocks. (sync_with_child): Change debugging output slightly. (fork_child): Set cygwin_finished_initializing here. Call _cygtls fork fixup and explicitly call sigproc_init. (fork_parent): Release malloc lock on fork failure. (vfork): Call signal handler via _my_tls. * sigproc.cc (sig_send): Ditto. * syscalls.cc (readv): Ditto. * termios.cc (tcsetattr): Ditto. * wait.cc (wait4): Ditto. * signal.cc (nanosleep): Ditto. (abort): Ditto. (kill_pgrp): Avoid killing self if exiting. * sync.cc (muto::acquire): Remove (temporarily?) ill-advised exiting_thread check. * gendef (_sigfe): Be more agressive in protecting stack pointer from other access by signal thread. (_cygtls::locked): Define new function. (_sigbe): Ditto. (_cygtls::pop): Protect edx. (_cygtls::lock): Use guaranteed method to set eax to 1. (longjmp): Aggressively protect signal stack. * miscfuncs.cc (low_priority_sleep): Reduce "sleep time" for secs == 0. * pinfo.cc (winpids::set): Counterintuitively use malloc's lock to protect simultaneous access to the pids list since there are pathological conditions which can cause malloc to call winpid. (winpids::init): Eliminate. * pinfo.h (winpids::cs): Eliminate declaration. * pinfo.h (winpids::init): Eliminate definition.
2004-02-12 11:01:58 +08:00
int
_cygtls::call_signal_handler ()
{
int this_sa_flags = SA_RESTART;
while (1)
{
lock ();
if (!current_sig)
{
unlock ();
break;
}
/* Pop the stack if the next "return address" is sigdelayed, since
this function is doing what sigdelayed would have done anyway. */
if (retaddr () == (__tlsstack_t) sigdelayed)
pop ();
debug_only_printf ("dealing with signal %d", current_sig);
Rename _threadinfo to _cygtls, throughout. * cygtls.h (_cygtls::call_signal_handler): Rename from call_signal_handler_now. (_cygtls::push): Make second argument mandatory. (_cygtls::fixup_after_fork): Declare new function. (_cygtls::lock): Ditto. * cygtls.cc (_cygtls::fixup_after_fork): Define new function. * dcrt0.cc (cygwin_finished_initializing): Define as bool. (alloc_stack): Use _tlstop rather than arbitrary variable in probably vain attempt to avoid strange fork problem on CTRL-C. (dll_crt0_0): Remove obsolete winpids::init call. * dll_init.cc (dll_dllcrt0): Detect forkee condition as equivalent to initializing. * winsup.h (cygwin_finished_initializing): Declare as bool. * exceptions.cc (handle_exceptions): Rely on cygwin_finished_initializing to determine how to handle exception during process startup. (_cygtls::call_signal_handler): Rename from call_signal_handler_now. (_cygtls::interrupt_now): Fill in second argument to push. (signal_fixup_after_fork): Eliminate. (setup_handler): Initialize locked to avoid potential inappropriate unlock. Resume thread if it has acquired the stack lock. (ctrl_c_handler): Just exit if ctrl-c is hit before cygiwn has finished initializing. * fork.cc (sync_with_child): Don't call abort since it can cause exit deadlocks. (sync_with_child): Change debugging output slightly. (fork_child): Set cygwin_finished_initializing here. Call _cygtls fork fixup and explicitly call sigproc_init. (fork_parent): Release malloc lock on fork failure. (vfork): Call signal handler via _my_tls. * sigproc.cc (sig_send): Ditto. * syscalls.cc (readv): Ditto. * termios.cc (tcsetattr): Ditto. * wait.cc (wait4): Ditto. * signal.cc (nanosleep): Ditto. (abort): Ditto. (kill_pgrp): Avoid killing self if exiting. * sync.cc (muto::acquire): Remove (temporarily?) ill-advised exiting_thread check. * gendef (_sigfe): Be more agressive in protecting stack pointer from other access by signal thread. (_cygtls::locked): Define new function. (_sigbe): Ditto. (_cygtls::pop): Protect edx. (_cygtls::lock): Use guaranteed method to set eax to 1. (longjmp): Aggressively protect signal stack. * miscfuncs.cc (low_priority_sleep): Reduce "sleep time" for secs == 0. * pinfo.cc (winpids::set): Counterintuitively use malloc's lock to protect simultaneous access to the pids list since there are pathological conditions which can cause malloc to call winpid. (winpids::init): Eliminate. * pinfo.h (winpids::cs): Eliminate declaration. * pinfo.h (winpids::init): Eliminate definition.
2004-02-12 11:01:58 +08:00
this_sa_flags = sa_flags;
sigset_t this_oldmask = set_process_mask_delta ();
if (infodata.si_code == SI_TIMER)
{
timer_tracker *tt = (timer_tracker *)
infodata.si_tid;
infodata.si_overrun = tt->disarm_overrun_event ();
}
/* Save information locally on stack to pass to handler. */
int thissig = current_sig;
siginfo_t thissi = infodata;
void (*thisfunc) (int, siginfo_t *, void *) = func;
* cygtls.h (_threadinfo::call): Remove regparm declaration to work around compiler bug. * autoload.cc (TryEnterCriticalSection): Remove. * dcrt0.cc (dll_crt0_0): Delete inappropriate setting of _my_tls.stackptr to NULL since it has really bad consequences. Make 'si' an automatic variable. * cygtls.cc (_threadinfo::init_thread): Correct thinko which caused thread list to be allocated every time. * cygtls.h (CYGTLS_PADSIZE): Define as const int. * sync.h: Make multiple inclusion safe. (muto::next): Eliminate. (muto::exiting_thread): New variable. (muto::set_exiting_thread): New function. (new_muto): Change to use different section for mutos since c++ give inexplicable warning in some cases otherwise. (new_muto1): Ditto. * dcrt0.cc (do_exit): Call muto::set_exiting_thread here. * sync.cc (muto_start): Eliminate. (muto::acquire): Always give exiting thread a lock. Never give thread a lock if exiting. (muto::release): Ditto for releasing. * dtable.cc (dtable::init_lock): Unline function and define here. * dtable.h (lock_cs): Define as a muto since critical sections seem to work oddly on Windows Me. (lock): Accommodate switch to muto. (unlock): Ditto. * exceptions.cc (setup_handler): Don't worry about acquiring mutos since that hasn't mattered for a long time. (signal_exit): Ditto: muto stuff will be handled automatically on exit now. * Makefile.in (DLL_IMPORTS): Link advapi32 to ensure proper DLL initialization. * autoload.cc (RegCloseKey): Arbitrarily choose this function as a "seed" to pull the advapi32 link library in. So, comment out the autoloading. * cygtls.cc (_threadinfo::init_thread): Just clear CYGTLS_PADSIZE. (_threadinfo::remove): Add debugging. (_threadinfo::find_tls): Ditto. * cygtls.h (_threadinfo::padding): Make zero length (for now?). * dcrt0.cc (dll_crt0_0): Move more initialization here from dll_crt0_1. (dll_crt0_1): See above. * dtable.h (dtable::lock): Remove commented out critical section locking. * dtable.h (dtable::init_lock): Remove commented out critical section locking. * dtable.h (dtable::unlock): Remove commented out critical section locking. * exceptions.cc (interruptible): bool'ize. * init.cc (threadfunc_fe): Revert to storing threadfunc at stack bottom. (munge_threadfunc): Ditto. Avoid adding overhead to calibration_thread. (prime_threads): Don't initialize tls stuff. (dll_entry): Make minor change to initialization order. * tlsoffsets.h: Regenerate. * sigproc.cc (wait_sig): Add sanity check for end of process thread exit. * select.h: Make minor formatting change. * Makefile.in: Add still more -fomit-frame-pointer functions. * dtable.h (dtable::lock): New function. (dtable::unlock): New function. (dtable::init_lock): New function. * cygheap.h (HEAP_TLS): Declare new enum value. (init_cygheap::threadlist): Declare new array. (init_cygheap::sthreads): Declare new variable. (cygheap_fdmanip::~cygheap_fdmanip): Use new dtable lock/unlock functions. (cygheap_fdnew::cygheap_fdnew): Ditto. (cygheap_fdget::cygheap_fdget): Ditto. * dtable.cc (dtable_init): Initialize fdtab critical section. (dtable::fixup_after_fork): Ditto. (dtable::fixup_after_exec): Ditto. (dtable::dup2): Use lock/unlock calls to protect access to fdtab. (dtable::find_fifo): Ditto. (dtable::fixup_before_fork): Ditto. (dtable::fixup_before_exec): Ditto. (dtable::set_file_pointers_for_exec): Ditto. (dtable::vfork_child_dup): Ditto. (dtable::vfork_parent_restore): Ditto. * syscalls.cc (close_all_files): Ditto. * sync.h (muto::acquired): Declare new function. (new_muto1): Declare new macro used to specify name of muto storage. * sync.cc (muto::acquired): Define new function. * cygthread.cc (cygthread::stub): Remove signal chain removal call since it is handled during initialization now. * cygthread.cc (cygthread::simplestub): Remove signal chain removal call since it is handled during initialization now. * cygtls.cc (sentry): New class used for locking. Use throughout. (_threadinfo::reset_exception): Don't pop stack. (_threadinfo::find_tls): Move from exceptions.cc. (_threadinfo::init_thread): Initialize array of threads rather than linked list. Take second argument indicating thread function for this thread. (_threadinfo::remove): Search thread array rather than linked list. Use sentry to lock. Only unlock if we got the lock. (_threadinfo::find_tls): Ditto for first two. (handle_threadlist_exception): Handle exceptions when manipulating the thread list in case of premature thread termination. (_threadinfo::init_threadlist_exceptions): Ditto. * cygtls.h (TLS_STACK_SIZE): Decrease size. (_threadinfo::padding): Add element to avoid overwriting lower part of stack. (_threadinfo::remove): Add a "wait" argument to control how long we wait for a lock before removing. * exceptions.cc (init_exception_handler): Make global. Take argument to control exception handler being set. (ctrl_c_handler): Wait forever when removing self from signal chain. (_threadinfo::find_tls): Move to cygtls.cc. (sig_handle): Reorganize detection for thread-specific signals. * heap.cc (heap_init): Rework slightly. Make fatal error more verbose. Remove malloc initialization since it can't happen during dll attach. * init.cc (search_for): Move address to search for on stack here. (threadfunc_ix): Ditto for stack offset. Make shared so that stack walk potentially only has to be done once when cygwin processes are running. (threadfunc_fe): Use standard tls to store thread function (may change back later). (calibration_thread): New function. Potentially called to find threadfunc_ix. (munge_threadfunc): Search for "search_for" value on stack. Output warning when thread func not found on stack. Use standard tls to store thread function. (prime_threads): New function. Called to prime thread front end. (dll_entry): Call dll_crt0_0 here when DLL_PROCESS_ATTACH. Call prime_threads here. Try to remove thread from signal list here. * sigproc.cc (wait_sig): Initialize threadlist exception stuff here. * thread.cc (pthread::exit): Pass argument to signal list remove function. * thread.h: Remove obsolete *ResourceLock defines. * tlsoffsets.h: Regenerate. * winsup.h (spf): Define temporary debug macro to be deleted later. * dcrt0.cc (dll_crt0_0): New function, called during DLL initialization. Mainly consists of code pulled from dll_crt0_1. (dll_crt0_1): See above. (_dll_crt0): Wait for initial calibration thread to complete, if appropriate. Move some stuff to dll_crt0_0. (initialize_main_tls): Accommodate argument change to _thread_info::init_thread. * fork.cc (fork_child): Ditto. (sync_with_child): Fix debug message. * external.cc (cygwin_internal): Remove special considerations for uninitialized dll since initialization happens during dll attach now. * dlfcn.cc (dlopen): Remove obsolete *ResourceLock calls. (dlclose): Ditto. * cygheap.h (init_cygheap::close_ctty): Declare new function. * cygheap.cc (init_cygheap::close_ctty): Define new function. * syscalls.cc (close_all_files): Use close_ctty. (setsid): Ditto. * cygthread.cc (cygthread::stub): Remove exception initialization. * cygthread.cc (cygthread::stub): Remove exception initialization. (cygthread::simplestub): Ditto. * thread.cc (pthread::thread_init_wrapper): Ditto. * cygtls.cc (_last_thread): Make static. (_threadinfo::call2): Initialize exception handler here. (_threadinfo::find_tls): Move here. * exceptions.cc (_threadinfo::find_tls): Move. * dcrt0.cc (__api_fatal): Add prefix info to message here rather than including it in every call to function. * winsup.h (api_fatal): Accommodate above change. * debug.cc (add_handle): Don't do anything if cygheap not around. (mark_closed): Ditto. * dll_init.cc (dll_list::detach): Fix debug output. * fork.cc (sync_with_child): Ditto. (vfork): Improve debug output. * heap.cc (heap_init): Ditto. * exceptions.cc (try_to_debug): Clarify message when debugger attaches.
2004-01-14 23:45:37 +08:00
ucontext_t *thiscontext = NULL, context_copy;
/* Only make a context for SA_SIGINFO handlers */
if (this_sa_flags & SA_SIGINFO)
{
context.uc_link = 0;
context.uc_flags = 0;
if (thissi.si_cyg)
memcpy (&context.uc_mcontext,
((cygwin_exception *) thissi.si_cyg)->context (),
sizeof (CONTEXT));
else
{
/* Software-generated signal. We're fetching the current
context, unwind to the caller and in case we're called
from sigdelayed, fix the instruction pointer accordingly. */
context.uc_mcontext.ctxflags = CONTEXT_FULL;
#pragma GCC diagnostic push
#pragma GCC diagnostic ignored "-Wmaybe-uninitialized"
RtlCaptureContext ((PCONTEXT) &context.uc_mcontext);
#pragma GCC diagnostic pop
__unwind_single_frame ((PCONTEXT) &context.uc_mcontext);
if (stackptr > stack)
{
#ifdef __x86_64__
context.uc_mcontext.rip = retaddr ();
#else
#error unimplemented for this target
#endif
}
}
if (this_sa_flags & SA_ONSTACK
&& !_my_tls.altstack.ss_flags
&& _my_tls.altstack.ss_sp)
{
context.uc_stack = _my_tls.altstack;
context.uc_stack.ss_flags = SS_ONSTACK;
}
else
{
context.uc_stack.ss_sp = NtCurrentTeb ()->Tib.StackBase;
context.uc_stack.ss_flags = 0;
if (!NtCurrentTeb ()->DeallocationStack)
context.uc_stack.ss_size
= (uintptr_t) NtCurrentTeb ()->Tib.StackLimit
- (uintptr_t) NtCurrentTeb ()->Tib.StackBase;
else
context.uc_stack.ss_size
= (uintptr_t) NtCurrentTeb ()->DeallocationStack
- (uintptr_t) NtCurrentTeb ()->Tib.StackBase;
}
context.uc_sigmask = context.uc_mcontext.oldmask = this_oldmask;
context.uc_mcontext.cr2 = (thissi.si_signo == SIGSEGV
|| thissi.si_signo == SIGBUS)
? (uintptr_t) thissi.si_addr : 0;
thiscontext = &context;
context_copy = context;
}
Rename _threadinfo to _cygtls, throughout. * cygtls.h (_cygtls::call_signal_handler): Rename from call_signal_handler_now. (_cygtls::push): Make second argument mandatory. (_cygtls::fixup_after_fork): Declare new function. (_cygtls::lock): Ditto. * cygtls.cc (_cygtls::fixup_after_fork): Define new function. * dcrt0.cc (cygwin_finished_initializing): Define as bool. (alloc_stack): Use _tlstop rather than arbitrary variable in probably vain attempt to avoid strange fork problem on CTRL-C. (dll_crt0_0): Remove obsolete winpids::init call. * dll_init.cc (dll_dllcrt0): Detect forkee condition as equivalent to initializing. * winsup.h (cygwin_finished_initializing): Declare as bool. * exceptions.cc (handle_exceptions): Rely on cygwin_finished_initializing to determine how to handle exception during process startup. (_cygtls::call_signal_handler): Rename from call_signal_handler_now. (_cygtls::interrupt_now): Fill in second argument to push. (signal_fixup_after_fork): Eliminate. (setup_handler): Initialize locked to avoid potential inappropriate unlock. Resume thread if it has acquired the stack lock. (ctrl_c_handler): Just exit if ctrl-c is hit before cygiwn has finished initializing. * fork.cc (sync_with_child): Don't call abort since it can cause exit deadlocks. (sync_with_child): Change debugging output slightly. (fork_child): Set cygwin_finished_initializing here. Call _cygtls fork fixup and explicitly call sigproc_init. (fork_parent): Release malloc lock on fork failure. (vfork): Call signal handler via _my_tls. * sigproc.cc (sig_send): Ditto. * syscalls.cc (readv): Ditto. * termios.cc (tcsetattr): Ditto. * wait.cc (wait4): Ditto. * signal.cc (nanosleep): Ditto. (abort): Ditto. (kill_pgrp): Avoid killing self if exiting. * sync.cc (muto::acquire): Remove (temporarily?) ill-advised exiting_thread check. * gendef (_sigfe): Be more agressive in protecting stack pointer from other access by signal thread. (_cygtls::locked): Define new function. (_sigbe): Ditto. (_cygtls::pop): Protect edx. (_cygtls::lock): Use guaranteed method to set eax to 1. (longjmp): Aggressively protect signal stack. * miscfuncs.cc (low_priority_sleep): Reduce "sleep time" for secs == 0. * pinfo.cc (winpids::set): Counterintuitively use malloc's lock to protect simultaneous access to the pids list since there are pathological conditions which can cause malloc to call winpid. (winpids::init): Eliminate. * pinfo.h (winpids::cs): Eliminate declaration. * pinfo.h (winpids::init): Eliminate definition.
2004-02-12 11:01:58 +08:00
int this_errno = saved_errno;
reset_signal_arrived ();
* cygtls.h (_cygtls::reset_signal_arrived): Actually reset the signal_arrived event. (_cygtls::handle_SIGCONT): Declare ew function. * cygwait.cc (is_cw_sig_handle): Delete. (is_cw_sig_cont): New convenience define. (cygwait): Clear signal if is_cw_sig_cont and we got a SIGCONT. * cygwait.h (cw_wait_mask): Add cw_sig_cont. * exceptions.cc (sig_handle_tty_stop): Tighten "incyg" region. Use cw_sig_cont param for cygwait. Don't zero signal here outside of lock. (sigpacket::setup_handler): Don't check for in_forkee since we will now never get here in that state. (_cygtls::handle_SIGCONT): Define new function. (sigpacket::process): Call handle_SIGCONT early to deal with SIGCONT. Nuke continue_now handling. Allow SIGKILL to kill a suspended process. Delete a couple of now-unneeded labels. (_cygtls::call_signal_handler): Reorganize setting of incyg within lock. * sigproc.cc (pending_signals): Simplify. (pending_signals::clear): New method. (_cygtls::remove_wq): Reorganize to always close wq.thread_ev if it exists to avoid handle leaks. (sig_clear): Simplify by just calling sigq.clear(). (sig_dispatch_pending): Always call sigq.pending even in signal thread to force another loop in wait_sig. (sig_send): Remove a "goto out" just before out: label. (pending_signals::add): Simplify. (pending_signals::del): Delete. (pending_signals::next): Delete. (wait_sig): Define variable q to be the start of the signal queue. Just iterate through sigq queue, deleting processed or zeroed signals. Only set clearwait when the current signal is SIGCHLD. * sigproc.h: Add a comment about an unused enum.
2013-04-09 09:01:19 +08:00
incyg = false;
current_sig = 0; /* Flag that we can accept another signal */
unlock (); /* unlock signal stack */
/* Alternate signal stack requested for this signal and alternate signal
stack set up for this thread? */
if (this_sa_flags & SA_ONSTACK
&& !_my_tls.altstack.ss_flags
&& _my_tls.altstack.ss_sp)
{
/* Yes, use alternate signal stack.
NOTE:
We DO NOT change the TEB's stack addresses and we DO NOT move the
_cygtls area to the alternate stack. This seems to work fine,
but there may be Windows functions not working correctly under
these circumstances.
On the other hand, if a Windows function crashed and we're handling
this here, moving the TEB stack addresses may be fatal.
If the current code does not work as expected in the "usual"
POSIX circumstances, this problem must be revisited. */
/* Compute new stackbase. We start from the high address, aligned
to 16 byte. */
uintptr_t new_sp = ((uintptr_t) _my_tls.altstack.ss_sp
+ _my_tls.altstack.ss_size) & ~0xf;
/* In assembler: Save regs on new stack, move to alternate stack,
call thisfunc, revert stack regs. */
#ifdef __x86_64__
/* Clobbered regs: rcx, rdx, r8, r9, r10, r11, rbp, rsp */
__asm__ ("\n\
movq %[NEW_SP], %%rax # Load alt stack into rax \n\
subq $0x60, %%rax # Make room on alt stack \n\
# for clobbered regs and \n\
# required shadow space \n\
movq %%rcx, 0x20(%%rax)# Save clobbered regs \n\
movq %%rdx, 0x28(%%rax) \n\
movq %%r8, 0x30(%%rax) \n\
movq %%r9, 0x38(%%rax) \n\
movq %%r10, 0x40(%%rax) \n\
movq %%r11, 0x48(%%rax) \n\
movq %%rbp, 0x50(%%rax) \n\
movq %%rsp, 0x58(%%rax) \n\
movl %[SIG], %%ecx # thissig to 1st arg reg \n\
leaq %[SI], %%rdx # &thissi to 2nd arg reg \n\
movq %[CTX], %%r8 # thiscontext to 3rd arg reg \n\
movq %[FUNC], %%r9 # thisfunc to r9 \n\
leaq %[WRAPPER], %%r10 # wrapper address to r10 \n\
movq %%rax, %%rsp # Move alt stack into rsp \n\
call *%%r10 # Call wrapper \n\
movq %%rsp, %%rax # Restore clobbered regs \n\
movq 0x58(%%rax), %%rsp \n\
movq 0x50(%%rax), %%rbp \n\
movq 0x48(%%rax), %%r11 \n\
movq 0x40(%%rax), %%r10 \n\
movq 0x38(%%rax), %%r9 \n\
movq 0x30(%%rax), %%r8 \n\
movq 0x28(%%rax), %%rdx \n\
movq 0x20(%%rax), %%rcx \n"
: : [NEW_SP] "o" (new_sp),
[SIG] "o" (thissig),
[SI] "o" (thissi),
[CTX] "o" (thiscontext),
[FUNC] "o" (thisfunc),
[WRAPPER] "o" (altstack_wrapper)
: "memory");
#else
#error unimplemented for this target
#endif
}
else
/* No alternate signal stack requested or available, just call
signal handler. */
thisfunc (thissig, &thissi, thiscontext);
incyg = true;
set_signal_mask (_my_tls.sigmask, (this_sa_flags & SA_SIGINFO)
? context.uc_sigmask : this_oldmask);
Eliminate use of sigframe and sigthread throughout. * Makefile.in (DLL_OFILES): Add sigfe.o. Remove reliance on cygwin.def from cygwin0.dll dependency since dependence on sigfe.o implies that. Generate def file on the fly using 'gendef'. * configure.in: Don't auto-generate cygwin.def. * configure: Regenerate. * cygwin.din: Add SIGFE stuff where appropriate. * dcrt0.cc (dll_crt0_1): Initialize cygwin tls early in process startup. Set _main_tls to address of the main thread's cygwin tls. * debug.h: Remove now unneeded WFSO and WFMO declarations. * exceptions.cc (_last_thread): Define. (set_thread_state_for_signals): New function. (reset_thread_exception_for_signals): Ditto. (init_thread_for_signals): Ditto. (delete_thread_for_signals): Ditto. (capture_thread_for_signals): Ditto. (handle_exceptions): Set return address explicitly for exceptions prior to calling sig_send. (interrupt_on_return): Eliminate. (setup_handler): Add preliminary implementation for dealing with thread-specific signals by querying _main_tls. (signal_exit): Use cygthread::main_thread_id instead of mainthread.id. (call_signal_handler_now): For now, just handle the main thread. * fork.cc (vfork): Save and restore main _my_tls. * gendef: New file. Generates def file and sigfe.s file. * gentls_offsets: New file. Generates offsets for perl to use in sigfe.s. * how-signals-work.txt: Mention that info is obsolete. * init.cc (dll_entry): Initialize cygwin tls storage here. * miscfuncs.cc (low_priority_sleep): Make a C function for easier calling from asm. * perthread.h (vfork_save::tls): New element. * signal.cc (nanosleep): Replace previous use of sigframe.call_signal_handler_now with straight call to call_signal_handler_now. (abort): Ditto. * syscalls.cc (readv): Ditto. * termios.cc (tcsetattr): Ditto. * wait.cc (wait4): Ditto. * sigproc.cc (sig_dispatch_pending): Ditto. (sig_send): Ditto. * sigproc.h: Declare call_signal_handler_now. * thread.cc (pthread::thread_init_wrapper): Initialize cygwin tls. Remove obsolete and unworking signal stuff. * thread.h (verifyable_object::sigs): Eliminate. (verifyable_object::sigmask): Eliminate. (verifyable_object::sigtodo): Eliminate. (verifyable_object::exit): Make attribute noreturn. (verifyable_object::thread_init_wrapper): Ditto. (pthread_null::exit): Ditto. * winbase.h (__stackbase): Always define. * winsup.h (low_priority_sleep): Declare as a "C" function. * include/cygwin/version.h: Bump API version to reflect sigwait export. * include/sys/queue.h: Protect SLIST_ENTRY from previous declaration. * signal.cc (sigwait): Implement. * select.cc (fhandler_base::ready_for_read): Add debugging output. * devices.h: Define more device pointers via their storage. * devices.in: Don't parse things like /dev/inet/tcp, as they really have no meaning. * devices.cc: Regenerate. * gendevices: Set proper protection for output file. * cygtls.h: New file. * gendef: New file. * gentls_offsets: New file. * tlsoffsets.h: New file. Autogenerated. * config/i386/longjmp.c: Remove. File subsumed by gendef output. * config/i386/makefrag: Remove obsolete file. * fhandler.cc: Remove spurious access_worker declaration. * spawn.cc (spawnve): Make debugging output more accurate. * cygwin-gperf: Remove. * devices.cc: Remove.
2003-11-29 04:55:59 +08:00
if (this_errno >= 0)
set_errno (this_errno);
if (this_sa_flags & SA_SIGINFO)
{
/* If more than just the sigmask in the context has been changed by
the signal handler, call setcontext. */
context_copy.uc_sigmask = context.uc_sigmask;
if (memcmp (&context, &context_copy, sizeof context) != 0)
setcontext (&context);
}
}
/* FIXME: Since 2011 this return statement always returned 1 (meaning
SA_RESTART is effective) if the thread we're running in is not the
main thread. We're disabling this check to enable EINTR behaviour
on system calls not running in the main thread. It's not quite clear
if that has undesired side-effects, therefore this comment. */
return this_sa_flags & SA_RESTART;
}
void
_cygtls::signal_debugger (siginfo_t& si)
{
HANDLE th;
/* If si.si_cyg is set then the signal was already sent to the debugger. */
if (isinitialized () && !si.si_cyg && (th = (HANDLE) *this)
&& being_debugged () && SuspendThread (th) >= 0)
{
CONTEXT c;
c.ContextFlags = CONTEXT_FULL;
if (GetThreadContext (th, &c))
{
if (incyg)
c._CX_instPtr = retaddr ();
memcpy (&context.uc_mcontext, &c, sizeof (CONTEXT));
/* Enough space for 64 bit addresses */
char sigmsg[2 * sizeof (_CYGWIN_SIGNAL_STRING
" ffffffff ffffffffffffffff")];
__small_sprintf (sigmsg, _CYGWIN_SIGNAL_STRING " %d %y %p",
si.si_signo, thread_id, &context.uc_mcontext);
OutputDebugString (sigmsg);
}
ResumeThread (th);
}
}
extern "C" int
setcontext (const ucontext_t *ucp)
{
PCONTEXT ctx = (PCONTEXT) &ucp->uc_mcontext;
set_signal_mask (_my_tls.sigmask, ucp->uc_sigmask);
_my_tls.incyg = true;
RtlRestoreContext (ctx, NULL);
/* If we got here, something was wrong. */
set_errno (EINVAL);
return -1;
}
extern "C" int
getcontext (ucontext_t *ucp)
{
PCONTEXT ctx = (PCONTEXT) &ucp->uc_mcontext;
ctx->ContextFlags = CONTEXT_FULL;
RtlCaptureContext (ctx);
__unwind_single_frame (ctx);
/* Successful getcontext is supposed to return 0. If we don't set the
return register to 0 here, there's a chance that code like this:
if (getcontext (&ctx) != 0)
assumes that getcontext failed after calling setcontext (&ctx). */
ucp->uc_mcontext._MC_retReg = 0;
ucp->uc_sigmask = ucp->uc_mcontext.oldmask = _my_tls.sigmask;
/* Do not touch any other member of ucontext_t. */
return 0;
}
extern "C" int
swapcontext (ucontext_t *oucp, const ucontext_t *ucp)
{
PCONTEXT ctx = (PCONTEXT) &oucp->uc_mcontext;
ctx->ContextFlags = CONTEXT_FULL;
RtlCaptureContext (ctx);
__unwind_single_frame (ctx);
/* See comment in getcontext. */
oucp->uc_mcontext._MC_retReg = 0;
oucp->uc_sigmask = oucp->uc_mcontext.oldmask = _my_tls.sigmask;
return setcontext (ucp);
}
/* Trampoline function to set the context to uc_link. The pointer to the
address of uc_link is stored in a callee-saved register, referenced by
_MC_uclinkReg from the C code. If uc_link is NULL, call exit. */
#ifdef __x86_64__
/* _MC_uclinkReg == %rbx */
__asm__ (" \n\
.global __cont_link_context \n\
.seh_proc __cont_link_context \n\
__cont_link_context: \n\
.seh_endprologue \n\
movq %rbx, %rsp \n\
movq (%rsp), %rcx \n\
# align stack and subtract shadow space \n\
andq $~0xf, %rsp \n\
subq $0x20, %rsp \n\
testq %rcx, %rcx \n\
je 1f \n\
call setcontext \n\
movq $0xff, %rcx \n\
1: \n\
call cygwin_exit \n\
nop \n\
.seh_endproc \n\
");
#else
#error unimplemented for this target
#endif
/* makecontext is modelled after GLibc's makecontext. The stack from uc_stack
is prepared so that it starts with a pointer to the linked context uc_link,
followed by the arguments to func, and finally at the bottom the "return"
address set to __cont_link_context. In the ucp context, rbx/ebx is set to
point to the stack address where the pointer to uc_link is stored. The
requirement to make this work is that rbx/ebx are callee-saved registers
per the ABI. If any function is called which doesn't follow the ABI
conventions, e.g. assembler code, this method will break. But that's ok. */
extern "C" void
makecontext (ucontext_t *ucp, void (*func) (void), int argc, ...)
{
extern void __cont_link_context (void);
uintptr_t *sp;
va_list ap;
/* Initialize sp to the top of the stack. */
sp = (uintptr_t *) ((uintptr_t) ucp->uc_stack.ss_sp + ucp->uc_stack.ss_size);
/* Subtract slots required for arguments and the pointer to uc_link. */
sp -= (argc + 1);
/* Align. */
sp = (uintptr_t *) ((uintptr_t) sp & ~0xf);
/* Subtract one slot for setting the return address. */
--sp;
/* Set return address to the trampolin function __cont_link_context. */
sp[0] = (uintptr_t) __cont_link_context;
/* Fetch arguments and store them on the stack.
x86_64:
- Store first four args in the AMD64 ABI arg registers.
- Note that the stack is not short by these four register args. The
reason is the shadow space for these regs required by the AMD64 ABI.
- The definition of makecontext only allows for "int" sized arguments to
func, 32 bit, likely for historical reasons. However, the argument
slots on x86_64 are 64 bit anyway, so we can fetch and store the args
as 64 bit values, and func can request 64 bit args without violating
the definition. This potentially allows porting 32 bit applications
providing pointer values to func without additional porting effort. */
va_start (ap, argc);
for (int i = 0; i < argc; ++i)
#ifdef __x86_64__
switch (i)
{
case 0:
ucp->uc_mcontext.rcx = va_arg (ap, uintptr_t);
break;
case 1:
ucp->uc_mcontext.rdx = va_arg (ap, uintptr_t);
break;
case 2:
ucp->uc_mcontext.r8 = va_arg (ap, uintptr_t);
break;
case 3:
ucp->uc_mcontext.r9 = va_arg (ap, uintptr_t);
break;
default:
sp[i + 1] = va_arg (ap, uintptr_t);
break;
}
#else
#error unimplemented for this target
#endif
va_end (ap);
/* Store pointer to uc_link at the top of the stack. */
sp[argc + 1] = (uintptr_t) ucp->uc_link;
/* Last but not least set the register in the context at ucp so that a
subsequent setcontext or swapcontext picks up the right values:
- Set instruction pointer to the target function.
- Set stack pointer to the just computed stack pointer value.
- Set Cygwin-specific uclink register to the address of the pointer
to uc_link. */
ucp->uc_mcontext._MC_instPtr = (uint64_t) func;
ucp->uc_mcontext._MC_stackPtr = (uint64_t) sp;
ucp->uc_mcontext._MC_uclinkReg = (uint64_t) (sp + argc + 1);
}