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/* Copyright (C) 1997-2013 Free Software Foundation, Inc.
This file is part of the GNU C Library.
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, see
<http://www.gnu.org/licenses/>. */
#include <errno.h>
#include <signal.h>
#define __need_NULL
#include <stddef.h>
#include <string.h>
#include <sysdep-cancel.h>
#include <sys/syscall.h>
#include <fbtl/pthreadP.h>
/* Return any pending signal or wait for one for the given time. */
static int
do_sigwait (const sigset_t *set, int *sig)
{
int ret;
#ifdef SIGCANCEL
sigset_t tmpset;
if (set != NULL
&& (__builtin_expect (__sigismember (set, SIGCANCEL), 0)
# ifdef SIGSETXID
|| __builtin_expect (__sigismember (set, SIGSETXID), 0)
# endif
))
{
/* Create a temporary mask without the bit for SIGCANCEL set. */
tmpset = *set;
__sigdelset (&tmpset, SIGCANCEL);
# ifdef SIGSETXID
__sigdelset (&tmpset, SIGSETXID);
# endif
set = &tmpset;
}
#endif
do {
ret = INLINE_SYSCALL (sigwait, 2, set, sig);
} while (ret == EINTR);
return ret;
}
int
__sigwait (const sigset_t *set, int *sig)
{
if (SINGLE_THREAD_P)
return do_sigwait (set, sig);
int oldtype = LIBC_CANCEL_ASYNC ();
int result = do_sigwait (set, sig);
LIBC_CANCEL_RESET (oldtype);
return result;
}
libc_hidden_def (__sigwait)
weak_alias (__sigwait, sigwait)
strong_alias (__sigwait, __libc_sigwait)
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