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newlib-cygwin/winsup/cygwin/sigproc.h

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import winsup-2000-02-17 snapshot
2000-02-18 03:38:33 +08:00
/* sigproc.h
Copyright 1997, 1998, 2000 Cygnus Solutions.
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. */
#define EXIT_SIGNAL 0x010000
#define EXIT_REPARENTING 0x020000
#define EXIT_NOCLOSEALL 0x040000
enum procstuff
{
PROC_ADDCHILD = 1, // add a new subprocess to list
PROC_CHILDSTOPPED = 2, // a child stopped
PROC_CHILDTERMINATED = 3, // a child died
PROC_CLEARWAIT = 4, // clear all waits - signal arrived
Fix final round of gcc warnings relating to unused parameters. * debug.cc (iscygthread): New function. * debug.h: Declare it. * exceptions.cc (set_process_mask): Flush pending signals. (handle_sigsuspend): No need to flush pending signals. (call_handler): Refine previous tests of muto ownership. Only clear wait()'s when we have definitely responded to a signal. * fhandler_console.cc (fhandler_console::read): Don't set EINTR if executing in a "cygwin" thread. * sigproc.cc (proc_subproc): Use second argument to control whether CLEARWAIT actually sets "signalled" flag. * sync.h (muto): Add 'unstable' method.
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PROC_WAIT = 5 // setup for wait() for subproc
import winsup-2000-02-17 snapshot
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};
typedef struct struct_waitq
{
int pid;
int options;
int status;
HANDLE ev;
void *rusage; /* pointer to potential rusage */
struct struct_waitq *next;
HANDLE thread_ev;
} waitq;
extern HANDLE signal_arrived;
BOOL __stdcall my_parent_is_alive ();
extern "C" int __stdcall sig_dispatch_pending (int force = FALSE) __asm__ ("sig_dispatch_pending");
extern "C" void __stdcall set_process_mask (sigset_t newmask);
* environ.cc: Eliminate oldstack CYGWIN option. * exceptions.cc (sfta): Eliminate obsolete function. (sgmb): Eliminate obsolete function. (class stack_info): Remove MS method for walking the stack. (stack_info::init): Just initialize required fields. (stack_info::brute_force): Rename to stack_info::walk. (handle_exceptions): Pass derived frame pointer to sig_send. (interrupt_setup): Clear saved frame pointer here. (interrupt_on_return): thestack is no longer a pointer. (call_handler): Accept a flag to indicate when a signal was sent from other than the main thread. Use saved frame pointer for determining where to place signal handler call. (sig_handle): Accept "nonmain" argument. Pass it to call_handler. * fhandler_tty.cc (fhandler_tty_common::__acquire_output_mutex): Change debugging output slightly. * (fhandler_tty_common::__release_output_mutex): Ditto. (fhandler_tty_slave::read): Fix a comment, remove a goto. * sigproc.cc (sig_send): Accept an optional frame pointer argument for use when suspending the main process. sigcomplete_main is an autoreset event now. Save frame pointer for non-main operation. (wait_sig): Make sigcomplete_main an autoreset event. Eliminate NOSIGQUEUE. Pass rc to sig_handle to signify if this was a nonmain process. * sigproc.h: Reflect change to sig_send argument. * syscalls.cc (swab): Eliminate swab function since it is now available in newlib. * winsup.h (signal_dispatch): Change CONTEXT cx to DWORD ebp.
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int __stdcall sig_handle (int, int);
import winsup-2000-02-17 snapshot
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void __stdcall sig_clear (int);
void __stdcall sig_set_pending (int);
int __stdcall handle_sigsuspend (sigset_t);
void __stdcall proc_terminate ();
void __stdcall sigproc_init ();
void __stdcall subproc_init ();
void __stdcall sigproc_terminate ();
BOOL __stdcall proc_exists (pinfo *);
int __stdcall proc_subproc (DWORD, DWORD);
* environ.cc: Eliminate oldstack CYGWIN option. * exceptions.cc (sfta): Eliminate obsolete function. (sgmb): Eliminate obsolete function. (class stack_info): Remove MS method for walking the stack. (stack_info::init): Just initialize required fields. (stack_info::brute_force): Rename to stack_info::walk. (handle_exceptions): Pass derived frame pointer to sig_send. (interrupt_setup): Clear saved frame pointer here. (interrupt_on_return): thestack is no longer a pointer. (call_handler): Accept a flag to indicate when a signal was sent from other than the main thread. Use saved frame pointer for determining where to place signal handler call. (sig_handle): Accept "nonmain" argument. Pass it to call_handler. * fhandler_tty.cc (fhandler_tty_common::__acquire_output_mutex): Change debugging output slightly. * (fhandler_tty_common::__release_output_mutex): Ditto. (fhandler_tty_slave::read): Fix a comment, remove a goto. * sigproc.cc (sig_send): Accept an optional frame pointer argument for use when suspending the main process. sigcomplete_main is an autoreset event now. Save frame pointer for non-main operation. (wait_sig): Make sigcomplete_main an autoreset event. Eliminate NOSIGQUEUE. Pass rc to sig_handle to signify if this was a nonmain process. * sigproc.h: Reflect change to sig_send argument. * syscalls.cc (swab): Eliminate swab function since it is now available in newlib. * winsup.h (signal_dispatch): Change CONTEXT cx to DWORD ebp.
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int __stdcall sig_send (pinfo *, int, DWORD ebp = 0);
import winsup-2000-02-17 snapshot
2000-02-18 03:38:33 +08:00
extern char myself_nowait_dummy[];
extern char myself_nowait_nonmain_dummy[];
extern DWORD maintid;
extern HANDLE hExeced; // Process handle of new window
// process created by spawn_guts()
#define WAIT_SIG_EXITING (WAIT_OBJECT_0 + 1)
#define allow_sig_dispatch(n) __allow_sig_dispatch (__FILE__, __LINE__, (n))
#define myself_nowait ((pinfo *)myself_nowait_dummy)
#define myself_nowait_nonmain ((pinfo *)myself_nowait_nonmain_dummy)
#define proc_register(child) \
proc_subproc (PROC_ADDCHILD, (DWORD) (child))