1 /* Copyright (C) 2007-2021 Free Software Foundation, Inc.
2 This file is part of the GNU C Library.
3
4 The GNU C Library is free software; you can redistribute it and/or
5 modify it under the terms of the GNU Lesser General Public
6 License as published by the Free Software Foundation; either
7 version 2.1 of the License, or (at your option) any later version.
8
9 The GNU C Library is distributed in the hope that it will be useful,
10 but WITHOUT ANY WARRANTY; without even the implied warranty of
11 MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
12 Lesser General Public License for more details.
13
14 You should have received a copy of the GNU Lesser General Public
15 License along with the GNU C Library; if not, see
16 <https://www.gnu.org/licenses/>. */
17
18 #include <errno.h>
19 #include <signal.h>
20 #include <unistd.h>
21 #include <sys/epoll.h>
22
23 #include <sysdep-cancel.h>
24 #include <sys/syscall.h>
25
26 /* Wait for events on an epoll instance "epfd". Returns the number of
27 triggered events returned in "events" buffer. Or -1 in case of
28 error with the "errno" variable set to the specific error code. The
29 "events" parameter is a buffer that will contain triggered
30 events. The "maxevents" is the maximum number of events to be
31 returned ( usually size of "events" ). The "timeout" parameter
32 specifies the maximum wait time in milliseconds (-1 == infinite).
33 The thread's signal mask is temporarily and atomically replaced with
34 the one provided as parameter. */
35
epoll_pwait(int epfd,struct epoll_event * events,int maxevents,int timeout,const sigset_t * set)36 int epoll_pwait (int epfd, struct epoll_event *events,
37 int maxevents, int timeout,
38 const sigset_t *set)
39 {
40 return SYSCALL_CANCEL (epoll_pwait, epfd, events, maxevents,
41 timeout, set, __NSIG_BYTES);
42 }
43 libc_hidden_def (epoll_pwait)
44