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/*
* This file has been modified for the cdrkit suite.
*
* The behaviour and appearence of the program code below can differ to a major
* extent from the version distributed by the original author(s).
*
* For details, see Changelog file distributed with the cdrkit package. If you
* received this file from another source then ask the distributing person for
* a log of modifications.
*
*/
/* @(#)sigdefs.h 1.5 02/01/19 Copyright 1997 J. Schilling */
/*
* Signal abstraction for BSD/SVR4 signals
*
* Copyright (c) 1997 J. Schilling
*/
/*
* This program is free software; you can redistribute it and/or modify
* it under the terms of the GNU General Public License version 2
* as published by the Free Software Foundation.
*
* 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; see the file COPYING. If not, write to the Free Software
* Foundation, 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA.
*/
#ifndef _SIGDEFS_H
#define _SIGDEFS_H
#ifndef _MCONFIG_H
#include <mconfig.h>
#endif
#ifdef HAVE_SIGSET
/*
* Try to by default use the function that sets up signal handlers in a way
* that does not reset the handler after it has been called.
*/
#define signal sigset
#endif
#ifdef HAVE_SIGPROCMASK
#define block_sigs(a) { \
sigset_t __new; \
\
sigfillset(&__new); \
sigprocmask(SIG_BLOCK, &__new, &a);\
}
#define unblock_sig(s) { \
sigset_t __new; \
\
sigemptyset(&__new); \
sigaddset(&__new, (s)); \
sigprocmask(SIG_UNBLOCK, &__new, NULL);\
}
#define restore_sigs(a) sigprocmask(SIG_SETMASK, &a, 0);
#else /* !HAVE_SIGPROCMASK */
#define sigset_t int
#define block_sigs(a) a = sigblock(0xFFFFFFFF)
#define restore_sigs(a) sigsetmask(a);
#define unblock_sig(s) { \
int __old, __new; \
\
block_sigs(__old); \
__new = sigmask(s); \
__new = __old & ~__new; \
sigsetmask(__new); \
}
#endif /* HAVE_SIGPROCMASK */
#endif /* _SIGDEFS_H */
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