1 | /* poll file descriptors. Hurd version. |
2 | Copyright (C) 1998-2022 Free Software Foundation, Inc. |
3 | This file is part of the GNU C Library. |
4 | |
5 | The GNU C Library is free software; you can redistribute it and/or |
6 | modify it under the terms of the GNU Lesser General Public |
7 | License as published by the Free Software Foundation; either |
8 | version 2.1 of the License, or (at your option) any later version. |
9 | |
10 | The GNU C Library is distributed in the hope that it will be useful, |
11 | but WITHOUT ANY WARRANTY; without even the implied warranty of |
12 | MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU |
13 | Lesser General Public License for more details. |
14 | |
15 | You should have received a copy of the GNU Lesser General Public |
16 | License along with the GNU C Library; if not, see |
17 | <https://www.gnu.org/licenses/>. */ |
18 | |
19 | #include <sys/poll.h> |
20 | #include <sys/time.h> |
21 | #include <hurd.h> |
22 | #include <hurd/fd.h> |
23 | |
24 | /* Poll the file descriptors described by the NFDS structures starting at |
25 | FDS. If TIMEOUT is nonzero and not -1, allow TIMEOUT milliseconds for |
26 | an event to occur; if TIMEOUT is -1, block until an event occurs. |
27 | Returns the number of file descriptors with events, zero if timed out, |
28 | or -1 for errors. */ |
29 | |
30 | int |
31 | __poll (struct pollfd *fds, nfds_t nfds, int timeout) |
32 | { |
33 | struct timespec ts, *to; |
34 | |
35 | if (timeout < 0) |
36 | to = NULL; |
37 | else |
38 | { |
39 | ts.tv_sec = timeout / 1000; |
40 | ts.tv_nsec = (timeout % 1000) * 1000000; |
41 | to = &ts; |
42 | } |
43 | |
44 | return _hurd_select (nfds, fds, NULL, NULL, NULL, to, NULL); |
45 | } |
46 | libc_hidden_def (__poll) |
47 | weak_alias (__poll, poll) |
48 | |