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/* Poll system call, with emulation if it is not available.
Copyright (C) 1997,1998,1999,2000,2001,2002 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, write to the Free
Software Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA
02111-1307 USA. */
#include <errno.h>
#include <sys/poll.h>
#include <sysdep.h>
#include <sys/syscall.h>
#include <bp-checks.h>
#include <nptl/pthreadP.h>
#include <tls.h>
extern int __syscall_poll (struct pollfd *__unbounded fds,
unsigned int nfds, int timeout);
/* The real implementation. */
int
__poll (fds, nfds, timeout)
struct pollfd *fds;
nfds_t nfds;
int timeout;
{
#ifndef NOT_IN_libc
if (__builtin_expect (THREAD_GETMEM (THREAD_SELF,
header.data.multiple_threads) == 0, 1))
return INLINE_SYSCALL (poll, 3, CHECK_N (fds, nfds), nfds, timeout);
int oldtype = LIBC_CANCEL_ASYNC ();
#endif
int result = INLINE_SYSCALL (poll, 3, CHECK_N (fds, nfds), nfds, timeout);
#ifndef NOT_IN_libc
LIBC_CANCEL_RESET (oldtype);
#endif
return result;
}
libc_hidden_def (__poll)
weak_alias (__poll, poll)
strong_alias (__poll, __libc_poll)
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