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33574c17 | 1 | /* Test pthread_mutex_timedlock. |
6d7e8eda | 2 | Copyright (C) 2000-2023 Free Software Foundation, Inc. |
33574c17 ST |
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 | |
ad2b41bf ST |
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. | |
33574c17 ST |
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 | |
ad2b41bf | 13 | Lesser General Public License for more details. |
33574c17 | 14 | |
ad2b41bf ST |
15 | You should have received a copy of the GNU Lesser General Public |
16 | License along with the GNU C Library; if not, see | |
5a82c748 | 17 | <https://www.gnu.org/licenses/>. */ |
33574c17 ST |
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 (&before, 0); | |
38 | ts.tv_sec = before.tv_sec + 1; | |
39 | ts.tv_nsec = before.tv_usec * 1000; | |
40 | ||
41 | printf ("Starting wait @ %d\n", (int) before.tv_sec); | |
42 | ||
43 | pthread_mutex_lock (&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 (&m, &ts); | |
47 | assert (err == ETIMEDOUT); | |
48 | ||
49 | gettimeofday (&after, 0); | |
50 | ||
51 | printf ("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 (1, EGRATUITOUS, "pthread_mutex_timedlock waited %d us", diff); | |
58 | ||
59 | return 0; | |
60 | } |