1 | /* Copyright (C) 2007-2016 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 | <http://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 | #ifdef __NR_epoll_pwait |
27 | |
28 | /* Wait for events on an epoll instance "epfd". Returns the number of |
29 | triggered events returned in "events" buffer. Or -1 in case of |
30 | error with the "errno" variable set to the specific error code. The |
31 | "events" parameter is a buffer that will contain triggered |
32 | events. The "maxevents" is the maximum number of events to be |
33 | returned ( usually size of "events" ). The "timeout" parameter |
34 | specifies the maximum wait time in milliseconds (-1 == infinite). |
35 | The thread's signal mask is temporarily and atomically replaced with |
36 | the one provided as parameter. */ |
37 | |
38 | int epoll_pwait (int epfd, struct epoll_event *events, |
39 | int maxevents, int timeout, |
40 | const sigset_t *set) |
41 | { |
42 | return SYSCALL_CANCEL (epoll_pwait, epfd, events, maxevents, |
43 | timeout, set, _NSIG / 8); |
44 | } |
45 | |
46 | #else |
47 | |
48 | int epoll_pwait (int epfd, struct epoll_event *events, |
49 | int maxevents, int timeout, |
50 | const sigset_t *set) |
51 | { |
52 | __set_errno (ENOSYS); |
53 | return -1; |
54 | } |
55 | stub_warning (epoll_pwait) |
56 | |
57 | #endif |
58 | |
59 | libc_hidden_def (epoll_pwait) |
60 | |