mirror of
git://gcc.gnu.org/git/gcc.git
synced 2024-12-18 16:09:18 +08:00
97 lines
3.0 KiB
C
97 lines
3.0 KiB
C
/* signals.h -- Header to include system dependent signal definitions.
|
|
$Id: signals.h,v 1.1.1.2 1998/03/22 20:42:55 law Exp $
|
|
|
|
This file is part of GNU Info, a program for reading online documentation
|
|
stored in Info format.
|
|
|
|
Copyright (C) 1993, 94, 95, 97 Free Software Foundation, Inc.
|
|
|
|
This program 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 2, or (at your option)
|
|
any later version.
|
|
|
|
This program 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 this program; if not, write to the Free Software
|
|
Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA.
|
|
|
|
Written by Brian Fox (bfox@ai.mit.edu). */
|
|
|
|
#ifndef INFO_SIGNALS_H
|
|
#define INFO_SIGNALS_H
|
|
|
|
#include <sys/types.h>
|
|
#include <signal.h>
|
|
|
|
/* For sysV68 --phdm@info.ucl.ac.be. */
|
|
#if !defined (SIGCHLD) && defined (SIGCLD)
|
|
#define SIGCHLD SIGCLD
|
|
#endif
|
|
|
|
#if !defined (HAVE_SIGPROCMASK) && !defined (sigmask)
|
|
# define sigmask(x) (1 << ((x)-1))
|
|
#endif /* !HAVE_SIGPROCMASK && !sigmask */
|
|
|
|
#if !defined (HAVE_SIGPROCMASK)
|
|
# if !defined (SIG_BLOCK)
|
|
# define SIG_UNBLOCK 1
|
|
# define SIG_BLOCK 2
|
|
# define SIG_SETMASK 3
|
|
# endif /* SIG_BLOCK */
|
|
|
|
/* Type of a signal set. */
|
|
# define sigset_t int
|
|
|
|
/* Make SET have no signals in it. */
|
|
# define sigemptyset(set) (*(set) = (sigset_t)0x0)
|
|
|
|
/* Make SET have the full range of signal specifications possible. */
|
|
# define sigfillset(set) (*(set) = (sigset_t)0xffffffffff)
|
|
|
|
/* Add SIG to the contents of SET. */
|
|
# define sigaddset(set, sig) *(set) |= sigmask (sig)
|
|
|
|
/* Delete SIG from the contents of SET. */
|
|
# define sigdelset(set, sig) *(set) &= ~(sigmask (sig))
|
|
|
|
/* Tell if SET contains SIG. */
|
|
# define sigismember(set, sig) (*(set) & (sigmask (sig)))
|
|
|
|
/* Suspend the process until the reception of one of the signals
|
|
not present in SET. */
|
|
# define sigsuspend(set) sigpause (*(set))
|
|
#endif /* !HAVE_SIGPROCMASK */
|
|
|
|
#if defined (HAVE_SIGPROCMASK) || defined (HAVE_SIGSETMASK)
|
|
/* These definitions are used both in POSIX and non-POSIX implementations. */
|
|
|
|
#define BLOCK_SIGNAL(sig) \
|
|
do { \
|
|
sigset_t nvar, ovar; \
|
|
sigemptyset (&nvar); \
|
|
sigemptyset (&ovar); \
|
|
sigaddset (&nvar, sig); \
|
|
sigprocmask (SIG_BLOCK, &nvar, &ovar); \
|
|
} while (0)
|
|
|
|
#define UNBLOCK_SIGNAL(sig) \
|
|
do { \
|
|
sigset_t nvar, ovar; \
|
|
sigemptyset (&ovar); \
|
|
sigemptyset (&nvar); \
|
|
sigaddset (&nvar, sig); \
|
|
sigprocmask (SIG_UNBLOCK, &nvar, &ovar); \
|
|
} while (0)
|
|
|
|
#else /* !HAVE_SIGPROCMASK && !HAVE_SIGSETMASK */
|
|
# define BLOCK_SIGNAL(sig)
|
|
# define UNBLOCK_SIGNAL(sig)
|
|
#endif /* !HAVE_SIGPROCMASK && !HAVE_SIGSETMASK */
|
|
|
|
#endif /* not INFO_SIGNALS_H */
|