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/* syssignal.h - System-dependent definitions for signals.
Copyright (C) 1993, 1999, 2001-2013 Free Software Foundation, Inc.
This file is part of GNU Emacs.
GNU Emacs is free software: you can redistribute it and/or modify
it under the terms of the GNU General Public License as published by
the Free Software Foundation, either version 3 of the License, or
(at your option) any later version.
GNU Emacs is distributed in the hope that it will be useful,
but WITHOUT ANY WARRANTY; without even the implied warranty of
MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
GNU General Public License for more details.
You should have received a copy of the GNU General Public License
along with GNU Emacs. If not, see <http://www.gnu.org/licenses/>. */
#include <signal.h>
#include <stdbool.h>
extern void init_signals (bool);
#ifdef HAVE_PTHREAD
#include <pthread.h>
/* If defined, asynchronous signals delivered to a non-main thread are
forwarded to the main thread. */
#define FORWARD_SIGNAL_TO_MAIN_THREAD
#endif
#if defined HAVE_TIMER_SETTIME && defined SIGEV_SIGNAL
# define HAVE_ITIMERSPEC
#endif
#if (defined SIGPROF && !defined PROFILING \
&& (defined HAVE_SETITIMER || defined HAVE_ITIMERSPEC))
# define PROFILER_CPU_SUPPORT
#endif
extern sigset_t empty_mask;
typedef void (*signal_handler_t) (int);
extern void emacs_sigaction_init (struct sigaction *, signal_handler_t);
char const *safe_strsignal (int) ATTRIBUTE_CONST;
#if NSIG < NSIG_MINIMUM
# undef NSIG
# define NSIG NSIG_MINIMUM
#endif
#ifndef emacs_raise
# define emacs_raise(sig) raise (sig)
#endif
/* On bsd, [man says] kill does not accept a negative number to kill a pgrp.
Must do that using the killpg call. */
#ifdef BSD_SYSTEM
#define EMACS_KILLPG(gid, signo) (killpg ( (gid), (signo)))
#else
#ifdef WINDOWSNT
#define EMACS_KILLPG(gid, signo) (kill (gid, signo))
#else
#define EMACS_KILLPG(gid, signo) (kill (-(gid), (signo)))
#endif
#endif
/* Define SIGCHLD as an alias for SIGCLD. There are many conditionals
testing SIGCHLD. */
#ifdef SIGCLD
#ifndef SIGCHLD
#define SIGCHLD SIGCLD
#endif /* SIGCHLD */
#endif /* ! defined (SIGCLD) */
#ifndef HAVE_STRSIGNAL
# define strsignal(sig) safe_strsignal (sig)
#endif
void deliver_process_signal (int, signal_handler_t);
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