src/w32select.c: Include w32common.h before w32term.h, so that
windows.h gets included before w32term.h uses some of its
features, see below.
src/w32term.h (LOCALE_ENUMPROCA, LOCALE_ENUMPROCW) [_MSC_VER]: New
typedefs.
(EnumSystemLocalesA, EnumSystemLocalesW) [_MSC_VER]: New
prototypes.
(EnumSystemLocales) [_MSC_VER]: Define if undefined.
src/w32proc.c (sys_signal): Handle all signals defined by the
MS-Windows runtime, not just SIGCHLD. Actually install the signal
handlers for signals supported by Windows. Don't override
term_ntproc as the handler for SIGABRT.
(sigaction): Rewrite to call sys_signal instead of duplicating its
code.
(sys_kill): Improve commentary.
src/w32.c (term_ntproc): Accept (and ignore) one argument, for
consistency with a signature of a signal handler. All callers
changed.
(init_ntproc): Accept an argument DUMPING. If dumping, don't
install term_ntproc as a signal handler for SIGABRT, as that
should be done by the dumped Emacs.
src/w32.h (init_ntproc, term_ntproc): Adjust prototypes.
src/w32select.c (term_w32select): Protect against repeated
invocation by setting clipboard_owner to NULL after calling
DestroyWindow.
src/emacs.c (shut_down_emacs, main): Adapt the calls to init_ntproc
and term_ntproc to their modified signatures.
* nt/inc/ms-w32.h (emacs_raise): New macro.
* src/alloc.c (die):
* src/sysdep.c (emacs_abort) [HAVE_NTGUI]:
Avoid recursive loop if there's a fatal error in the function itself.
* src/atimer.c (pending_atimers):
* src/blockinput.h: Don't include "atimer.h"; no longer needed.
(interrupt_input_pending): Remove. All uses removed.
pending_signals now counts both atimers and ordinary interrupts.
This is less racy than having three separate pending-signal flags.
(block_input, unblock_input, totally_unblock_input, unblock_input_to)
(input_blocked_p):
Rename from their upper-case counterparts BLOCK_INPUT,
UNBLOCK_INPUT, TOTALLY_UNBLOCK_INPUT, UNBLOCK_INPUT_TO,
INPUT_BLOCKED_P, and turn into functions. All uses changed.
This makes it easier to access volatile variables more accurately.
(BLOCK_INPUT_RESIGNAL): Remove. All uses replaced by unblock_input ().
(input_blocked_p): Prefer this to 'interrupt_input_blocked', as
that's more reliable if the code is buggy and sets
interrupt_input_blocked to a negative value. All uses changed.
* src/atimer.c (deliver_alarm_signal):
Remove. No need to deliver this to the parent; any thread can
handle this signal now. All uses replaced by underlying handler.
* src/atimer.c (turn_on_atimers):
* src/dispnew.c (handle_window_change_signal):
* src/emacs.c (handle_danger_signal):
* src/keyboard.c (kbd_buffer_get_event):
Don't reestablish signal handler; not needed with sigaction.
* src/blockinput.h (UNBLOCK_INPUT_TO, TOTALLY_UNBLOCK_INPUT)
(UNBLOCK_INPUT_TO):
Rework to avoid unnecessary accesses to volatile variables.
(UNBLOCK_INPUT_TO): Now a function.
(totally_unblock_input, unblock_input): New decls.
* src/data.c (handle_arith_signal, deliver_arith_signal): Move to sysdep.c
(init_data): Remove. Necessary stuff now done in init_signal.
* src/emacs.c, src/xdisp.c: Include "atimer.h", since we invoke atimer functions.
* src/emacs.c (handle_fatal_signal, deliver_fatal_signal): Move to sysdep.c.
(fatal_error_code): Remove; no longer needed.
(terminate_due_to_signal): Rename from fatal_error_backtrace, since
it doesn't always backtrace. All uses changed. No need to reset
signal to default, since sigaction and/or die does that for us now.
Use emacs_raise (FOO), not kill (getpid (), FOO).
(main): Check more-accurately whether we're dumping.
Move fatal-error setup to sysdep.c
* src/floatfns.c: Do not include "syssignal.h"; no longer needed.
* src/gtkutil.c (xg_get_file_name, xg_get_font):
Remove no-longer-needed signal-mask manipulation.
* src/keyboard.c, src/process.c (POLL_FOR_INPUT):
Don't depend on USE_ASYNC_EVENTS, a symbol that is never defined.
* src/keyboard.c (read_avail_input): Remove.
All uses replaced by gobble_input.
(Ftop_level): Use TOTALLY_UNBLOCK_INPUT rather than open code.
(kbd_buffer_store_event_hold, gobble_input):
(record_asynch_buffer_change) [USABLE_SIGIO]:
(store_user_signal_events):
No need to mess with signal mask.
(gobble_input): If blocking input and there are terminals, simply
set pending_signals to 1 and return. All hooks changed to not
worry about whether input is blocked.
(process_pending_signals): Clear pending_signals before processing
them, in case a signal comes in while we're processing.
By convention callers now test pending_signals before calling us.
(UNBLOCK_INPUT_TO, unblock_input, totally_unblock_input):
New functions, to support changes to blockinput.h.
(handle_input_available_signal): Now extern.
(reinvoke_input_signal): Remove. All uses replaced by
handle_async_input.
(quit_count): Now volatile, since a signal handler uses it.
(handle_interrupt): Now takes bool IN_SIGNAL_HANDLER as arg. All
callers changed. Block SIGINT only if not already blocked.
Clear sigmask reliably, even if Fsignal returns, which it can.
Omit unnecessary accesses to volatile var.
(quit_throw_to_read_char): No need to restore sigmask.
* src/keyboard.c (gobble_input, handle_user_signal):
* src/process.c (wait_reading_process_output):
Call signal-handling code rather than killing ourselves.
* src/lisp.h: Include <float.h>, for...
(IEEE_FLOATING_POINT): New macro, moved here to avoid duplication.
(pending_signals): Now volatile.
(syms_of_data): Now const if IEEE floating point.
(handle_input_available_signal) [USABLE_SIGIO]:
(terminate_due_to_signal, record_child_status_change): New decls.
* src/process.c (create_process): Avoid disaster if memory is exhausted
while we're processing a vfork, by tightening the critical section
around the vfork.
(send_process_frame, process_sent_to, handle_pipe_signal)
(deliver_pipe_signal): Remove. No longer needed, as Emacs now
ignores SIGPIPE.
(send_process): No need for setjmp/longjmp any more, since the
SIGPIPE stuff is now gone. Instead, report an error if errno
is EPIPE.
(record_child_status_change): Now extern. PID and W are now args.
Return void, not bool. All callers changed.
* src/sysdep.c (wait_debugging) [(BSD_SYSTEM || HPUX) && !defined (__GNU__)]:
Remove. All uses removed. This bug should be fixed now in a
different way.
(wait_for_termination_1): Use waitpid rather than sigsuspend,
and record the child status change directly. This avoids the
need to futz with the signal mask.
(process_fatal_action): Move here from emacs.c.
(emacs_sigaction_flags): New function, containing
much of what used to be in emacs_sigaction_init.
(emacs_sigaction_init): Use it. Block nonfatal system signals that are
caught by emacs, to make races less likely.
(deliver_process_signal): Rename from handle_on_main_thread.
All uses changed.
(BACKTRACE_LIMIT_MAX): Now at top level.
(thread_backtrace_buffer, threadback_backtrace_pointers):
New static vars.
(deliver_thread_signal, deliver_fatal_thread_signal):
New functions, for more-accurate delivery of thread-specific signals.
(handle_fatal_signal, deliver_fatal_signal): Move here from emacs.c.
(deliver_arith_signal): Handle in this thread, not
in the main thread, since it's triggered by this thread.
(maybe_fatal_sig): New function.
(init_signals): New arg DUMPING so that we can be more accurate
about whether we're dumping. Caller changed.
Treat thread-specific signals differently from process-general signals.
Block all signals while handling fatal error; that's safer.
xsignal from SIGFPE only on non-IEEE hosts, treating it as fatal
on IEEE hosts.
When batch, ignore SIGHUP, SIGINT, SIGTERM if they were already ignored.
Ignore SIGPIPE unless batch.
(emacs_backtrace): Output backtrace for the appropriate thread,
which is not necessarily the main thread.
* src/syssignal.h: Include <stdbool.h>.
(emacs_raise): New macro.
* src/xterm.c (x_connection_signal): Remove; no longer needed
now that we use sigaction.
(x_connection_closed): No need to mess with sigmask now.
(x_initialize): No need to reset SIGPIPE handler here, since
init_signals does this for us now.
Fixes: debbugs:12471
Here, we use the generic window-system configuration system we just
implemented to support the w32 window-system in the mainline build
under Cygwin. (Previously, the w32 window system could only be
compiled as part of the NT-native Emacs build process.)
The changes in this patch need to be applied atomically in order to
avoid breaking Emacs. The changes include:
- Changes throughout the Lisp and C code to not assume that
NT Emacs and the w32 window system are synonymous.
- Wiring up the regular select(2) event loop to Windows messages
- Cleaning up the w32 drag-and-drop receiving code.
- Exposing Cygwin path conversion functions to elisp.
- Unicode file dialog support when compiling for Cygwin.
- Splitting the w32 term lisp initialization code into code
applicable to any w32 window-system and code specific to
system-type windows-nt.
- Integrating the old and new w32 code into the build system.
src/w32xfns.c:
src/w32uniscribe.c:
src/w32term.c:
src/w32select.c:
src/w32reg.c:
src/w32proc.c:
src/w32menu.c:
src/w32inevt.c:
src/w32heap.c:
src/w32font.c:
src/w32fns.c:
src/w32console.c:
src/w32.c:
src/w16select.c: Remove inclusion of setjmp.h, as it is now included
by lisp.h. This completes removal of setjmp.h inclusion
erroneously announced in the previous commit.
src/lisp.h [!HAVE__SETJMP, !HAVE_SIGSETJMP]: Make the commentary
more accurate.
src/image.c (_setjmp) [!HAVE__SETJMP]: Define only if 'setjmp' is
not defined as a macro. The latter happens on MS-Windows.
Do not try to redefine the 'abort' function. Instead, redo
the code so that it calls 'emacs_abort' rather than 'abort'.
This removes the need for the NO_ABORT configure-time macro
and makes it easier to change the abort code to do a backtrace.
* configure.ac (NO_ABRT): Remove.
* admin/CPP-DEFINES (NO_ABORT): Remove.
* nt/inc/ms-w32.h (w32_abort) [HAVE_NTGUI]: Remove.
* src/.gdbinit: Just stop at emacs_abort, not at w32_abort or abort.
* src/emacs.c (abort) [!DOS_NT && !NO_ABORT]:
Remove; sysdep.c's emacs_abort now takes its place.
* src/lisp.h (emacs_abort): New decl. All calls from Emacs code to
'abort' changed to use 'emacs_abort'.
* src/msdos.c (dos_abort) [defined abort]: Remove; not used.
(abort) [!defined abort]: Rename to ...
(emacs_abort): ... new name.
* src/sysdep.c (emacs_abort) [!HAVE_NTGUI]: New function, taking
the place of the old 'abort' in emacs.c.
* src/w32.c, src/w32fns.c (abort): Do not #undef.
* src/w32.c (emacs_abort): Rename from w32_abort.
* lisp/org/ob-lilypond.el (ly-w32-ly-path): Rename from ly-win32-ly-path.
(ly-w32-pdf-path): Rename from ly-win32-pdf-path.
(ly-w32-midi-path): Rename from ly-win32-midi-path.
(ly-determine-ly-path, ly-determine-pdf-path, ly-determine-midi-path):
Check for "windows-nt", not "win32", in system-type.
* src/regex.c (MAX_BUF_SIZE): Remove some incorrect and
long-ago-commented-out code that talks about "WIN32".
* src/w32heap.h (OS_WINDOWS_95): Rename from OS_WIN95.
All uses changed.
(setup_windows_coding_system): New functions.
(convert_to_handle_as_coded, Fw32_get_clipboard_data): Use
setup_windows_coding_system.
(setup_config, Fw32_get_clipboard_data): Use
validate_coding_system.
(Fx_selection_exists): Move call to setup_config to a place
were signals are allowed.
