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/* Copyright (C) 2006 Free Software Foundation, Inc.
This file is part of the GNU C Library.
Contributed by Ulrich Drepper <drepper@redhat.com>, 2006.
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 <signal.h>
#include <sys/syscall.h>
#include <sys/poll.h>
#define __need_NULL
#include <stddef.h>
#if defined __NR_ppoll && defined __UCLIBC_LINUX_SPECIFIC__
# ifdef __UCLIBC_HAS_THREADS_NATIVE__
# include <sysdep-cancel.h>
# else
# define SINGLE_THREAD_P 1
# endif
int
ppoll(struct pollfd *fds, nfds_t nfds, const struct timespec *timeout,
const sigset_t *sigmask)
{
/* The Linux kernel can in some situations update the timeout value.
We do not want that so use a local variable. */
struct timespec tval;
if (timeout != NULL) {
tval = *timeout;
timeout = &tval;
}
if (SINGLE_THREAD_P)
return INLINE_SYSCALL(ppoll, 5, fds, nfds, timeout, sigmask, _NSIG / 8);
# ifdef __UCLIBC_HAS_THREADS_NATIVE__
int oldtype = LIBC_CANCEL_ASYNC ();
int result = INLINE_SYSCALL(ppoll, 5, fds, nfds, timeout, sigmask, _NSIG / 8);
LIBC_CANCEL_RESET (oldtype);
return result;
# endif
}
libc_hidden_def(ppoll)
#endif
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