84 lines
2.3 KiB
C
84 lines
2.3 KiB
C
/* syssignal.h - System-dependent definitions for signals.
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Copyright (C) 1993, 1999, 2001-2024 Free Software Foundation, Inc.
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This file is part of GNU Emacs.
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GNU Emacs is free software: you can redistribute it and/or modify
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it under the terms of the GNU General Public License as published by
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the Free Software Foundation, either version 3 of the License, or (at
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your option) any later version.
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GNU Emacs is distributed in the hope that it will be useful,
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but WITHOUT ANY WARRANTY; without even the implied warranty of
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MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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GNU General Public License for more details.
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You should have received a copy of the GNU General Public License
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along with GNU Emacs. If not, see <https://www.gnu.org/licenses/>. */
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#ifndef EMACS_SYSSIGNAL_H
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#define EMACS_SYSSIGNAL_H
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#include <signal.h>
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#include <attribute.h>
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extern void init_signals (void);
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extern void block_child_signal (sigset_t *);
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extern void unblock_child_signal (sigset_t const *);
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extern void block_interrupt_signal (sigset_t *);
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extern void restore_signal_mask (sigset_t const *);
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extern void block_tty_out_signal (sigset_t *);
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extern void unblock_tty_out_signal (sigset_t const *);
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#ifdef HAVE_PTHREAD
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#include <pthread.h>
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/* If defined, asynchronous signals delivered to a non-main thread are
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forwarded to the main thread. */
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#define FORWARD_SIGNAL_TO_MAIN_THREAD
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#endif
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/* On Cygwin as of 2015-06-22 SIGEV_SIGNAL is defined as an enum
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constant but not as a macro. */
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#if defined CYGWIN && !defined SIGEV_SIGNAL
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#define SIGEV_SIGNAL SIGEV_SIGNAL
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#endif
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#if defined HAVE_TIMER_SETTIME && defined SIGEV_SIGNAL
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# define HAVE_ITIMERSPEC
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#endif
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#if (defined SIGPROF && !defined PROFILING \
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&& (defined HAVE_SETITIMER || defined HAVE_ITIMERSPEC))
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# define PROFILER_CPU_SUPPORT
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#endif
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extern sigset_t empty_mask;
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typedef void (*signal_handler_t) (int);
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extern void emacs_sigaction_init (struct sigaction *, signal_handler_t);
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char const *safe_strsignal (int) ATTRIBUTE_CONST;
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#if NSIG < NSIG_MINIMUM
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# undef NSIG
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# define NSIG NSIG_MINIMUM
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#endif
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#ifndef SA_SIGINFO
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# define SA_SIGINFO 0
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#endif
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#ifndef emacs_raise
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# define emacs_raise(sig) raise (sig)
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#endif
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#ifndef HAVE_STRSIGNAL
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# define strsignal(sig) safe_strsignal (sig)
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#endif
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void deliver_process_signal (int, signal_handler_t);
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#endif /* EMACS_SYSSIGNAL_H */
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