GetOverlappedResult since previous IsEventSignalled will have reset the handle.
* select.cc (cygwin_select): Remove space before parentheses in syscall
debugging output.
(pipe_data_available): Streamline if block.
reference count changes itself.
* fhandler.cc (fhandler_base::reset): Set _refcnt to 0.
* fhandler.h (fhandler_base::refcnt): Report refcnt when debugging.
* select.cc (cygwin_select): Set return_on_signal to indicate when select
should be interrupted.
(select_stuff::wait): Keep looping unless return_on_signal is set.
* select.h (select_stuff::return_on_signal): New variable.
(select_stuff::select_stuff): Zero return_on_signal.
information.
* exceptions.cc (_cygtls::inside_kernel): Modernize comment. Consider
executing a DLL from the Wow64 directory as being "in the kernel".
(_cygtls::call_signal_handler): For now, only deal with main_tls signals if
main_tls is known to be executing in the cygwin DLL. To more closely emulate
linux, consider the operation to be restartable if not executing in the main
thread.
* globals.cc (windows_system_directory): Remove NO_COPY.
(windows_system_directory_length): Ditto.
(system_wow64_directory): New variable.
(system_wow64_directory_length): Ditto.
* select.cc (cygwin_select): Don't issue a EINTR on non-main threads since that
seems to be what Linux does. Add missing break to signal case/switch.
(select_stuff::wait): Don't issue a EINTR on non-main threads since that seems
to be what Linux does. Remove now-unneeded accommodation for
WAIT_IO_COMPLETION. Add a comment.
* sigproc.h (cygwait): Ditto. Don't return if signal_received noticed and it's
not the main thread.
* signal.cc (sigprocmask): Add standard syscall debug stuff.
* thread.cc (pthread_sigmask): Ditto.
(peek_windows): Report on HWND handle used in queries.
* select.h: Update copyright.
* sigproc.h (cygwait): Eliminate multi-argument variety since more general
implementation may cause odd problems in select. Also force to always be
inline.
for stuff".
* fhandler.cc (fhandler_base_overlapped::wait_overlapped): Use simplified arg
form of cygwait.
* fhandler_console.cc (fhandler_console::read): Ditto.
* fhandler_audio.cc (fhandler_dev_dsp::Audio_out::waitforspac): Ditto.
(fhandler_dev_dsp::Audio_in::waitfordata): Ditto.
* fhandler_fifo.cc (fhandler_fifo::wait): Ditto.
* fhandler_serial.cc (fhandler_serial::raw_read): Ditto.
(fhandler_serial::raw_write): Ditto.
* select.cc (cygwin_select): Ditto.
* sigproc.h (cygwait): Rename from cygWFMO. Define two argument and single
argument forms of this function.
* fhandler_tty.cc (fhandler_pty_slave::open): Use method to query if tty is
open.
(fhandler_pty_slave::read): Send SIGHUP when master is detected as closed.
(fhandler_pty_common::close): Close input_available_event in callers since
master may need to signal it first.
(fhandler_pty_master::close): Lie and set input_available_event when closing,
then close input_available_event.
(fhandler_pty_slave::close): Close input_available_event explicitly here.
* tty.h (tty::is_master_closed): Declare new method.
Throughout, change syscalls to report on return values using new %R format
option.
* smallprint.cc (__small_vsprintf): Add parsing for %R to report on return
values and possible errno from syscalls.
* errno.cc (errmap): Add PRIVILEGE_NOT_HELD.
* fhandler_tty.cc (fhandler_pty_master::setup): When creating a thread use
shorter name to reduce debuggging output.
* select.cc (start_thread_pipe): Ditto.
(start_thread_serial): Ditto.
(start_thread_socket): Ditto.
(start_thread_mailslot): Ditto.
* sigproc.cc (talktome): Ditto.
process of setting up the DLL and no name is known.
* dcrt0.cc (initial_env): Remove CYGWIN_SLEEP stuff.
(get_cygwin_startup_info): Activate strace here as appropriate.
(dll_crt0_0): Move get_cygwin_startup_info as early as possible to avoid
missing strace output.
* fork.cc (frok::child): Move debugging statement to point where ppid will be
set.
* pinfo.cc (pinfo::thisproc): Remove obsolete call to strace.hello. Tweak
debug output slightly.
* select.cc (select_stuff::wait): Allow APCS to be triggered while waiting
since we use them now. Report when that happens.
* sigproc.cc (child_info::child_info): Use strace.active() rather than
strace.attached().
* spawn.cc (child_info_spawn::worker): Only write strace child pid when we know
it's a cygwin process. Accommodate change to write_child argument list.
* strace.cc (strace::hello): Delete. Move functionality...
(strace::activate): ...to here.
(mypid): Just use raw GetCurrentProcessId () if myself isn't set.
(strace::write_childpid): Don't wait for subproc_ready. Remove arg which was
required for it.
* include/sys/strace.h (strace::hello): Delete.
(strace::write_childpid): Delete first argument.
* devices.cc: Regenerate.
* dtable.cc: (fh_alloc): Preserve /dev/tty name when that's what we opened.
(build_fh_pc): Preserve any existing name.
* fhandler.cc (fhandler_base::open_with_arch): Ditto.
* fhandler_tty.cc (fhandler_pty_master::fhandler_pty_master): Force the name to
/dev/ptmx while preserving other pty master device information.
* path.h (cfree_maybe): New macro.
(path_conv::operator =): Free any allocated strings in target.
(path_conv::free_strings): Delete unused function.
* sigproc.cc (proc_terminate): Remove previous accommodation for execed
processes since it didn't have the desired effect. Change comment to a FIXME.
* spawn.cc (chExeced): Mark NO_COPY.
(exe_suffixes): Ditto.
* fhandler_socket.cc (fhandler_socket::sendmsg): Add missing call to
get_inet_addr to convert AF_LOCAL to AF_INET sockets.
* net.cc (cygwin_socket): Workaround UDP Winsock problem. Add comment
to explain why.
* select.cc: Include winsock2.h rather than winsock.h.
(select_stuff::destroy): New inline method to delete memory taken
by select_stuff.
(select_stuff::~select_stuff): Call destroy.
(select_stuff::wait): Add case to allow canceling select.
* select.h (select_stuff::destroy): Declare.
* thread.cc: Mark poll, pselect and poll as cancelable.
* autoload.cc: Convert all definitions for ANSI user32 functions to
definitions for the corresponding UNICODE function.
(SendMessageA): Remove.
(SendNotifyMessageW): Define.
* fhandler_windows.cc (fhandler_windows::write): Use SendNotifyMessageW
call rather than SendMessage to make function always return immediately.
(fhandler_windows::read): Make function interruptible and a cancellation
point. Handle O_NONBLOCK.
* select.cc (peek_serial): Don't wait for signal_arrived here.
* window.cc (wininfo::winthread): Call CreateWindowExW directly rather
than CreateWindow wrapper.
* fhandler_socket.cc (fhandler_socket::connect): Ditto.
(fhandler_socket::accept4): Ditto.
(fhandler_socket::recvfrom): Ditto.
(fhandler_socket::recvmsg): Ditto.
(fhandler_socket::sendto): Ditto.
(fhandler_socket::sendmsg): Ditto.
* flock.cc (lf_setlock): Allow to cancel thread running blocking
file lock. Try to make code more readable.
(lockf): Call pthread_testcancel.
* mmap.cc (msync): Ditto.
* posix_ipc.cc (ipc_cond_timedwait): Call pthread::static_cancel_self
rather than pthread_testcancel.
* select.cc (cygwin_select): Call pthread_testcancel.
* syscalls.cc (pread): Ditto.
(pwrite): Ditto.
(readv): Ditto.
(writev): Ditto.
(open): Ditto.
(close): Ditto.
(fsync): Ditto.
* termios.cc (tcdrain): Ditto.
* thread.cc: Align list of cancellation points with above changes.
Mark not-implemented functions, too.
(cancelable_wait): Don't set unused object indices to WAIT_FAILED
since that could result in wrong behaviour. Set them to the invalid
value WAIT_TIMEOUT + 1 instead.
__name.
* cygthread.h (cygthread::cygthread): Create versions which eliminate 'n'
parameter.
* dcrt0.cc (dll_crt0_1): Remove check for threadfunc_ix. Remove obsolete
comments. Set process_state to active here.
* fhandler_netdrive.cc (create_thread_and_wait): Use shortened cygthread
constructor.
* timer.cc (timer_tracker::settime): Ditto.
* window.cc (HWND): Ditto.
* fhandler_tty.cc: Use shortened cygthread constructor, where appropriate,
throughout.
* select.cc: Ditto.
* fork.cc (frok::child): Remove wait_for_sigthread.
(fork): Reformat if for slightly better clarity.
* init.cc (dll_finished_loading): New variable.
(dll_entry): Use dll_finished_loading to determine when we should call
merge_threadfunc.
* sigproc.cc (no_signals_available): Simplify by using my_readsig.
(wait_sig_inited): Delete.
(wait_sig): Define as void function.
(pending_signals): Accommodate change to wait_sig definition.
(wait_for_sigthread): Delete definition.
(sigproc_init): Initialize signal pipe here, before wait_sig thread is created.
Use void form of cygthread creation.
(init_sig_pipe): Delete.
(wait_sig): Return void rather than DWORD. Assume previous initialization of
signal pipe. Set my_sendsig to NULL when exiting.
* sigproc.h (wait_for_sigthread): Delete declaration.
(MsgWaitForMultipleObjects): Remove.
* select.cc (select_stuff::wait): Use MsgWaitForMultipleObjectsEx with
QS_ALLPOSTMESSAGE and, if possible, MWMO_INPUTAVAILABLE flags. Explain
why. Fix a potential crash due to a NULL pointer in WAIT_FAILED case.
(peek_windows): Use filter pattern on NT4. Explain why.
* wincap.h (wincaps::has_mwmo_inputavailable): New element.
* wincap.cc: Implement above element throughout.
* select.cc (peek_pipe): Reorganize slightly. Don't attempt to check a handle
if it has ongoing I/O.
(select_pipe_info::select_pipe_info): Delete definition.
(select_pipe_info::~select_pipe_info): Delete definition.
(thread_pipe): Get rid of WFMO call. Reorganize loop.
(pipe_cleanup): Remove dependence on destructor.
(thread_serial): Reorganize loop.
* select.h (select_pipe_info): Empty this class since it no longer has any
special requirements (for now).
* syscalls.cc (readv): Remove an unneeded debug printf.
a friend until the fhandler_tty intertangling can be worked out.
* select.cc (select_pipe_info::add_watch_handle): Don't inspect the overlapped
event if we're not waiting for I/O.
(fhandler_tty_common::select_*): Change to standard function. Don't do kludgy
fhandler_pipe coercion.
events (for completion of mouse reporting mode 1000) and mouse
movement events (for additional mouse reporting modes 1002 and 1003).
Use mouse_aware() as a guard and only condition for mouse
reporting in order to enforce consistence of read() and select().
Add focus reports (for additional focus reporting mode 1004).
(mouse_aware): Enable detection of additional mouse events for select().
Tune function to precisely match actual reporting criteria.
Move adjustment of mouse position (by window scroll offset)
here to avoid duplicate code.
(char_command): Initialization of enhanced mouse reporting modes.
Initialization of focus reporting mode.
* fhandler.h (use_mouse): Change flag (bool->int) to indicate
additional mouse modes. Add flag to indicate focus reporting.
(mouse_aware): Move enhanced function into fhandler_console.cc.
* select.cc (peek_console): Use modified mouse_aware() for more
general detection of mouse events. Also check for focus reports.
memory used by socket select functions. Combine them into a single
struct select.
* cygtls.cc: Accommodate above change throughout.
(_cygtls::init_thread): Drop initalizing of sockevt to
INVALID_HANDLE_VALUE.
(_cygtls::fixup_after_fork): Reset sockevt to NULL.
(_cygtls::remove): Don't use sockevt value to bail out prematurely.
Set sockevt to NULL. Free malloced select members.
* select.h (struct select_socket_info): Drop max_w4 member.
* select.cc (thread_socket): Use INFINITE timeout value if number of
objects to wait for is <= MAXIMUM_WAIT_OBJECTS. Use num_w4 member
of select_socket_info struct rather than dropped max_w4.
(init_tls_select_info): New inline function to initialize TLS select
members.
(start_thread_socket): Just call init_tls_select_info to initialize TLS
select members and use them later on.
(socket_cleanup): Don't free select_socket_info pointer members since
they are thread local now.
(select_record::select_record): Define do-nothing constructor for "new" to
avoid gratuitous zeroing.
(select_info): New base class.
(select_pipe_info): New class with methods for dealing with pipes.
(select_socket_info): New class with methods for dealing with sockets.
(select_serial_info): Dummy class for serial.
(select_mailslot_info): Dummy class for mailslots.
(select_stuff): Define device_specific_* as actual classes rather than void *.
* dtable.h (dtable::select_read): Accommodate return value change to 'bool' and
argument change to "select_stuff".
(dtable::select_write): Ditto.
(dtable::select_except): Ditto.
* dtable.cc (dtable::select_read): Accommodate return value change to 'bool'
and argument change to "select_stuff".
(dtable::select_write): Ditto.
(dtable::select_except): Ditto.
* fhandler.h: Excise select-related classes.
(fhandler_*::select_read): Change argument to select_stuff.
(fhandler_*::select_write): Ditto.
(fhandler_*::select_except): Ditto.
* select.cc (UNIX_FD_ZERO): Use memset rather than bzero.
(select_stuff::test_and_set): Change return type to bool. Allocate
select_record on entry and let fhandler_*::select_* operate on the start.next
field of select_stuff.
(pipeinf): Delete.
(select_pipe_info::select_pipe_info): New constructor. Allocates event for
controlling pipe waits.
(select_pipe_info::~select_pipe_info): New destructor. Destroy event. Stop
thread.
(select_pipe_info::add_watch_handle): New function.
(thread_pipe): Wait for the hEvent part of any overlapped pipes before peeking.
(start_thread_pipe): Don't allocate device_specific_pipe stuff here. Assume
that it has been allocated earlier.
(pipe_cleanup): Rely on select_pipe_info destructor to clean up pipe
paraphenalia.
(fhandler_*::select_*): Derive select_record from new select_stuff argument.
(fhandler_pipe::select_*): Ditto. Allocate pipe-specific field if not already
allocated.
(serialinf): Delete.
(thread_serial): serialinf -> select_serial_info.
(fhandler_base::ready_for_read): Rewrite to accommodate change in argument to
fhandler_*::select_*.
(socketinf): Delete.
(thread_socket): socketinf -> select_socket_info.
(mailslotinf): Delete.
(thread_mailslot): mailslotinf -> select_mailslot_info.
whether the overlapped event should be tested.
(fhandler_base::read_overlapped): Pass is_overlapped state to has_ongoing_io.
(fhandler_base::write_overlapped): Ditto.
* fhandler.h (fhandler_base::has_ongoing_io): Accommodate argument change.
* select.cc (peek_pipe): Ditto.
* fhandler.cc (fhandler_base::has_ongoing_io): Define new function.
(fhandler_base::read_overlapped): Use has_ongoing_io to avoid writing when
handle has not completed last I/O.
(fhandler_base::write_overlapped): Ditto.
* select.cc (peek_pipe): Be more careful about accessing hEvent field from
get_overlapped().
Christopher Faylor
Corinna Vinschen