1 | /* Test pthread_mutex_timedlock. |
2 | Copyright (C) 2000-2024 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 | #define _GNU_SOURCE |
20 | |
21 | #include <pthread.h> |
22 | #include <stdio.h> |
23 | #include <assert.h> |
24 | #include <error.h> |
25 | #include <errno.h> |
26 | #include <sys/time.h> |
27 | |
28 | int |
29 | main (int argc, char **argv) |
30 | { |
31 | error_t err; |
32 | struct timespec ts; |
33 | pthread_mutex_t m = PTHREAD_MUTEX_INITIALIZER; |
34 | struct timeval before, after; |
35 | int diff; |
36 | |
37 | gettimeofday (tv: &before, tz: 0); |
38 | ts.tv_sec = before.tv_sec + 1; |
39 | ts.tv_nsec = before.tv_usec * 1000; |
40 | |
41 | printf (format: "Starting wait @ %d\n" , (int) before.tv_sec); |
42 | |
43 | pthread_mutex_lock (mutex: &m); |
44 | /* A default mutex shall dead lock if locked twice. As such we do |
45 | not need spawn a second thread. */ |
46 | err = pthread_mutex_timedlock (mutex: &m, abstime: &ts); |
47 | assert (err == ETIMEDOUT); |
48 | |
49 | gettimeofday (tv: &after, tz: 0); |
50 | |
51 | printf (format: "End wait @ %d\n" , (int) after.tv_sec); |
52 | |
53 | diff = after.tv_sec * 1000000 + after.tv_usec |
54 | - before.tv_sec * 1000000 - before.tv_usec; |
55 | |
56 | if (diff < 900000 || diff > 1100000) |
57 | error (status: 1, errnum: EGRATUITOUS, format: "pthread_mutex_timedlock waited %d us" , diff); |
58 | |
59 | return 0; |
60 | } |
61 | |