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/* Copyright (C) 2007, 2011, 2012 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>
#include <unistd.h>
#include <sys/epoll.h>
#include <sysdep-cancel.h>
#include <sys/syscall.h>
#ifdef __NR_epoll_pwait
/* Wait for events on an epoll instance "epfd". Returns the number of
triggered events returned in "events" buffer. Or -1 in case of
error with the "errno" variable set to the specific error code. The
"events" parameter is a buffer that will contain triggered
events. The "maxevents" is the maximum number of events to be
returned ( usually size of "events" ). The "timeout" parameter
specifies the maximum wait time in milliseconds (-1 == infinite).
The thread's signal mask is temporarily and atomically replaced with
the one provided as parameter. */
int epoll_pwait (int epfd, struct epoll_event *events,
int maxevents, int timeout,
const sigset_t *set)
{
if (SINGLE_THREAD_P)
return INLINE_SYSCALL (epoll_pwait, 6, epfd, events, maxevents, timeout,
set, _NSIG / 8);
int oldtype = LIBC_CANCEL_ASYNC ();
int result = INLINE_SYSCALL (epoll_pwait, 6, epfd, events, maxevents,
timeout, set, _NSIG / 8);
LIBC_CANCEL_RESET (oldtype);
return result;
}
#else
int epoll_pwait (int epfd, struct epoll_event *events,
int maxevents, int timeout,
const sigset_t *set)
{
__set_errno (ENOSYS);
return -1;
}
stub_warning (epoll_pwait)
#endif
libc_hidden_def (epoll_pwait)
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