X-Git-Url: https://code.delx.au/gnu-emacs/blobdiff_plain/90207a152538c00b6c75b9774b528470dfb42717..a37d34f3b470e3fb4013e01d207488e3ddb78798:/src/syssignal.h

diff --git a/src/syssignal.h b/src/syssignal.h
index a2522f2442..d7399c6cb8 100644
--- a/src/syssignal.h
+++ b/src/syssignal.h
@@ -1,6 +1,6 @@
 /* syssignal.h - System-dependent definitions for signals.
 
-Copyright (C) 1993, 1999, 2001-2012 Free Software Foundation, Inc.
+Copyright (C) 1993, 1999, 2001-2013 Free Software Foundation, Inc.
 
 This file is part of GNU Emacs.
 
@@ -17,7 +17,10 @@ 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/>.  */
 
-extern void init_signals (void);
+#include <signal.h>
+#include <stdbool.h>
+
+extern void init_signals (bool);
 
 #ifdef HAVE_PTHREAD
 #include <pthread.h>
@@ -26,132 +29,33 @@ extern void init_signals (void);
 #define FORWARD_SIGNAL_TO_MAIN_THREAD
 #endif
 
-/* Don't #include <signal.h>.  That header should always be #included
-   before "config.h", because some configuration files (like s/hpux.h)
-   indicate that SIGIO doesn't work by #undef-ing SIGIO.  If this file
-   #includes <signal.h>, then that will re-#define SIGIO and confuse
-   things.  */
-/* XXX This is not correct anymore, there is a BROKEN_SIGIO macro. */
-
-#define SIGMASKTYPE sigset_t
-
-#define SIGEMPTYMASK (empty_mask)
-extern sigset_t empty_mask;
-
-/* POSIX pretty much destroys any possibility of writing sigmask as a
-   macro in standard C.  We always define our own version because the
-   predefined macro in Glibc 2.1 is only provided for compatibility for old
-   programs that use int as signal mask type.  */
-#undef sigmask
-#ifdef __GNUC__
-#define sigmask(SIG) 				\
-  ({						\
-    sigset_t _mask;				\
-    sigemptyset (&_mask);			\
-    sigaddset (&_mask, SIG);			\
-    _mask;					\
-  })
-#else /* ! defined (__GNUC__) */
-extern sigset_t sys_sigmask ();
-#define sigmask(SIG) (sys_sigmask (SIG))
-#endif /* ! defined (__GNUC__) */
-
-#undef sigpause
-#define sigpause(MASK)    sigsuspend (&(MASK))
-
-#define sigblock(SIG)    sys_sigblock (SIG)
-#define sigunblock(SIG)  sys_sigunblock (SIG)
-#ifndef sigsetmask
-#define sigsetmask(SIG)  sys_sigsetmask (SIG)
+#if defined HAVE_TIMER_SETTIME && defined SIGEV_SIGNAL
+# define HAVE_ITIMERSPEC
 #endif
-#undef signal
-#define signal(SIG,ACT)      sys_signal(SIG,ACT)
-
-/* Whether this is what all systems want or not, this is what
-   appears to be assumed in the source, for example data.c:arith_error.  */
-typedef void (*signal_handler_t) (int);
 
-signal_handler_t sys_signal (int signal_number, signal_handler_t action);
-sigset_t sys_sigblock   (sigset_t new_mask);
-sigset_t sys_sigunblock (sigset_t new_mask);
-sigset_t sys_sigsetmask (sigset_t new_mask);
-#if ! (defined TIOCNOTTY || defined USG5 || defined CYGWIN)
-void croak (char *) NO_RETURN;
+#if (defined SIGPROF && !defined PROFILING \
+     && (defined HAVE_SETITIMER || defined HAVE_ITIMERSPEC))
+# define PROFILER_CPU_SUPPORT
 #endif
 
-#define sys_sigdel(MASK,SIG) sigdelset (&MASK,SIG)
-
-#define sigfree() sigsetmask (SIGEMPTYMASK)
+extern sigset_t empty_mask;
 
-#if defined (SIGIO) && defined (BROKEN_SIGIO)
-# undef SIGIO
-#endif
-/* Last user: m/ibmrs6000.h  */
-#if defined (SIGPOLL) && defined (BROKEN_SIGPOLL)
-#undef SIGPOLL
-#endif
-/* Last user: m/ibmrs6000.h  */
-#if defined (SIGAIO) && defined (BROKEN_SIGAIO)
-#undef SIGAIO
-#endif
-/* Last user: m/ibmrs6000.h  */
-#if defined (SIGPTY) && defined (BROKEN_SIGPTY)
-#undef SIGPTY
-#endif
+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
-# ifdef NSIG
-#  undef NSIG
-# endif
+# undef NSIG
 # define NSIG NSIG_MINIMUM
 #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)))
+#ifndef emacs_raise
+# define emacs_raise(sig) raise (sig)
 #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
-/* strsignal is in sysdep.c */
-char *strsignal (int);
+# define strsignal(sig) safe_strsignal (sig)
 #endif
 
-#ifdef FORWARD_SIGNAL_TO_MAIN_THREAD
-extern pthread_t main_thread;
-#define SIGNAL_THREAD_CHECK(signo)                                      \
-  do {                                                                  \
-    if (!pthread_equal (pthread_self (), main_thread))			\
-      {                                                                 \
-        /* POSIX says any thread can receive the signal.  On GNU/Linux  \
-           that is not true, but for other systems (FreeBSD at least)   \
-           it is.  So direct the signal to the correct thread and block \
-           it from this thread.  */                                     \
-        sigset_t new_mask;                                              \
-                                                                        \
-        sigemptyset (&new_mask);                                        \
-        sigaddset (&new_mask, signo);                                   \
-        pthread_sigmask (SIG_BLOCK, &new_mask, 0);                      \
-        pthread_kill (main_thread, signo);                              \
-        return;                                                         \
-      }                                                                 \
-   } while (0)
-
-#else /* not FORWARD_SIGNAL_TO_MAIN_THREAD */
-#define SIGNAL_THREAD_CHECK(signo)
-#endif /* not FORWARD_SIGNAL_TO_MAIN_THREAD */
+void deliver_process_signal (int, signal_handler_t);