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glibc/sysdeps/unix/sysv/linux/epoll_pwait.c
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/* Copyright (C) 2007-2016 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) | |
{ | |
return SYSCALL_CANCEL (epoll_pwait, epfd, events, maxevents, | |
timeout, set, _NSIG / 8); | |
} | |
#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) |