92 lines
2.4 KiB
C
92 lines
2.4 KiB
C
/* Copyright (C) 1997, 1998, 2000, 2002 Free Software Foundation, Inc.
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This file is part of the GNU C Library.
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The GNU C Library is free software; you can redistribute it and/or
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modify it under the terms of the GNU Lesser General Public
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License as published by the Free Software Foundation; either
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version 2.1 of the License, or (at your option) any later version.
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The GNU C Library is distributed in the hope that it will be useful,
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but WITHOUT ANY WARRANTY; without even the implied warranty of
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MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
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Lesser General Public License for more details.
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You should have received a copy of the GNU Lesser General Public
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License along with the GNU C Library; if not, write to the Free
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Software Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA
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02111-1307 USA. */
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#include <errno.h>
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#include <signal.h>
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#define __need_NULL
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#include <stddef.h>
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#include <sysdep.h>
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#include <sys/syscall.h>
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#include <bp-checks.h>
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#include <nptl/pthreadP.h>
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#include <tls.h>
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extern int __syscall_rt_sigtimedwait (const sigset_t *__unbounded, siginfo_t *__unbounded,
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const struct timespec *__unbounded, size_t);
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/* Return any pending signal or wait for one for the given time. */
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static int
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do_sigwait (const sigset_t *set, int *sig)
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{
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int ret;
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/* XXX The size argument hopefully will have to be changed to the
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real size of the user-level sigset_t. */
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#ifdef INTERNAL_SYSCALL
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ret = INTERNAL_SYSCALL (rt_sigtimedwait, 4, CHECK_SIGSET (set),
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NULL, NULL, _NSIG / 8);
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if (! INTERNAL_SYSCALL_ERROR_P (ret))
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{
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*sig = ret;
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ret = 0;
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}
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else
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ret = INTERNAL_SYSCALL_ERRNO (ret);
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#else
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ret = INLINE_SYSCALL (rt_sigtimedwait, 4, CHECK_SIGSET (set),
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NULL, NULL, _NSIG / 8);
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if (ret != -1)
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{
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*sig = ret;
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ret = 0;
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}
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else
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ret = errno;
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#endif
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return ret;
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}
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int
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__sigwait (set, sig)
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const sigset_t *set;
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int *sig;
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{
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#ifndef NOT_IN_libc
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if (__builtin_expect (THREAD_GETMEM (THREAD_SELF,
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header.data.multiple_threads) == 0, 1))
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return do_sigwait (set, sig);
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int oldtype = LIBC_CANCEL_ASYNC ();
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#endif
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int result = do_sigwait (set, sig);
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#ifndef NOT_IN_libc
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LIBC_CANCEL_RESET (oldtype);
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#endif
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return result;
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}
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libc_hidden_def (__sigwait)
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weak_alias (__sigwait, sigwait)
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strong_alias (__sigwait, __libc_sigwait)
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