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/* Copyright (C) 2008 Free Software Foundation, Inc.
This file is part of the GNU C Library.
Contributed by David Bartley <dtbartle@csclub.uwaterloo.ca>, 2008.
The GNU C Library is free software; you can redistribute it and/or
modify it under the terms of the GNU Lesser General Public
License as published by the Free Software Foundation; either
version 2.1 of the License, or (at your option) any later version.
The GNU C Library 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
Lesser General Public License for more details.
You should have received a copy of the GNU Lesser General Public
License along with the GNU C Library; if not, write to the Free
Software Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA
02111-1307 USA. */
#include <pthreadP.h>
#include <synch.h>
#include <abstime-to-reltime.h>
DECLARE_INLINE_SYSCALL (int, lwp_sema_timedwait, sema_t *sp,
struct timespec *tsp, int check_park);
int __sema_timedwait (sem, abstime)
sema_t *sem;
struct timespec *abstime;
{
/* Reject invalid timeouts. */
/* TODO: if we can acquire the semaphore we should never check abstime */
if (INVALID_TIMESPEC (abstime))
return EINVAL;
struct timespec _reltime;
struct timespec *reltime = abstime_to_reltime (abstime, &_reltime);
if (reltime && reltime->tv_sec < 0)
return ETIME;
/* Enable asynchronous cancellation. Required by the standard. */
int oldtype = __pthread_enable_asynccancel ();
int errval = INLINE_SYSCALL (lwp_sema_timedwait, 3, sem, reltime, 1);
/* Disable asynchronous cancellation. */
__pthread_disable_asynccancel (oldtype);
return errval;
}
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