NetBSD/lib/libc/sys/sigtimedwait.c
jdolecek af3d346a8c add POSIX sigtimedwait(), sigwaitinfo(), sigwait() - wait for queued signals
note these are for non-threaded programs only - libpthread will provide
it's own thread-aware wrapper
2003-02-15 21:11:47 +00:00

73 lines
2.8 KiB
C

/* $NetBSD: sigtimedwait.c,v 1.1 2003/02/15 21:11:49 jdolecek Exp $ */
/*-
* Copyright (c) 2003 The NetBSD Foundation, Inc.
* All rights reserved.
*
* This code is derived from software contributed to The NetBSD Foundation
* by Jaromir Dolecek.
*
* Redistribution and use in source and binary forms, with or without
* modification, are permitted provided that the following conditions
* are met:
* 1. Redistributions of source code must retain the above copyright
* notice, this list of conditions and the following disclaimer.
* 2. Redistributions in binary form must reproduce the above copyright
* notice, this list of conditions and the following disclaimer in the
* documentation and/or other materials provided with the distribution.
* 3. All advertising materials mentioning features or use of this software
* must display the following acknowledgement:
* This product includes software developed by the NetBSD
* Foundation, Inc. and its contributors.
* 4. Neither the name of The NetBSD Foundation nor the names of its
* contributors may be used to endorse or promote products derived
* from this software without specific prior written permission.
*
* THIS SOFTWARE IS PROVIDED BY THE NETBSD FOUNDATION, INC. AND CONTRIBUTORS
* ``AS IS'' AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED
* TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR
* PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE FOUNDATION OR CONTRIBUTORS
* BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
* CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF
* SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS
* INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN
* CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
* ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
* POSSIBILITY OF SUCH DAMAGE.
*/
#include <sys/cdefs.h>
#if defined(LIBC_SCCS) && !defined(lint)
__RCSID("$NetBSD: sigtimedwait.c,v 1.1 2003/02/15 21:11:49 jdolecek Exp $");
#endif /* LIBC_SCCS and not lint */
#include "namespace.h"
#include <sys/types.h>
#include <sys/syscall.h>
#include <unistd.h>
#include <signal.h>
#include <time.h>
#ifdef __weak_alias
__weak_alias(sigtimedwait,_sigtimedwait)
#endif
int _sigtimedwait __P((const sigset_t * __restrict,
siginfo_t * __restrict, const struct timespec * __restrict));
/*
* Copy timeout to local variable and call the syscall.
*/
int
_sigtimedwait(const sigset_t * __restrict set, siginfo_t * __restrict info,
const struct timespec * __restrict timeout)
{
struct timespec ts;
if (timeout) {
ts = *timeout;
return (__sigtimedwait(set, info, &ts));
} else
return (__sigtimedwait(set, info, NULL));
}