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0a07288b | 1 | /* C11 threads condition timed wait variable tests. |
581c785b | 2 | Copyright (C) 2018-2022 Free Software Foundation, Inc. |
0a07288b AZ |
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 | |
5a82c748 | 17 | <https://www.gnu.org/licenses/>. */ |
0a07288b AZ |
18 | |
19 | #include <threads.h> | |
20 | #include <stdio.h> | |
21 | #include <unistd.h> | |
22 | ||
23 | #include <support/check.h> | |
24 | ||
25 | /* Shared condition variable between child and parent. */ | |
26 | static cnd_t cond; | |
27 | ||
28 | /* Mutex needed to signal and wait threads. */ | |
29 | static mtx_t mutex; | |
30 | ||
31 | static int | |
32 | signal_parent (void *arg) | |
33 | { | |
d6b8f847 FW |
34 | /* Acquire the lock so that cnd_signal does not run until |
35 | cnd_timedwait has been called. */ | |
36 | if (mtx_lock (&mutex) != thrd_success) | |
37 | FAIL_EXIT1 ("mtx_lock failed"); | |
0a07288b AZ |
38 | if (cnd_signal (&cond) != thrd_success) |
39 | FAIL_EXIT1 ("cnd_signal failed"); | |
d6b8f847 FW |
40 | if (mtx_unlock (&mutex) != thrd_success) |
41 | FAIL_EXIT1 ("mtx_unlock"); | |
0a07288b AZ |
42 | |
43 | thrd_exit (thrd_success); | |
44 | } | |
45 | ||
46 | static int | |
47 | do_test (void) | |
48 | { | |
49 | thrd_t id; | |
50 | struct timespec w_time; | |
51 | ||
52 | if (cnd_init (&cond) != thrd_success) | |
53 | FAIL_EXIT1 ("cnd_init failed"); | |
54 | if (mtx_init (&mutex, mtx_plain) != thrd_success) | |
55 | FAIL_EXIT1 ("mtx_init failed"); | |
d6b8f847 FW |
56 | if (mtx_lock (&mutex) != thrd_success) |
57 | FAIL_EXIT1 ("mtx_lock failed"); | |
0a07288b AZ |
58 | |
59 | if (clock_gettime (CLOCK_REALTIME, &w_time) != 0) | |
60 | FAIL_EXIT1 ("clock_gettime failed"); | |
d6b8f847 FW |
61 | |
62 | /* This needs to be sufficiently long to prevent the cnd_timedwait | |
63 | call from timing out. */ | |
64 | w_time.tv_sec += 3600; | |
0a07288b AZ |
65 | |
66 | if (thrd_create (&id, signal_parent, NULL) != thrd_success) | |
67 | FAIL_EXIT1 ("thrd_create failed"); | |
68 | ||
69 | if (cnd_timedwait (&cond, &mutex, &w_time) != thrd_success) | |
70 | FAIL_EXIT1 ("cnd_timedwait failed"); | |
71 | ||
72 | if (thrd_join (id, NULL) != thrd_success) | |
73 | FAIL_EXIT1 ("thrd_join failed"); | |
74 | ||
d6b8f847 FW |
75 | if (mtx_unlock (&mutex) != thrd_success) |
76 | FAIL_EXIT1 ("mtx_unlock"); | |
77 | ||
0a07288b AZ |
78 | mtx_destroy (&mutex); |
79 | cnd_destroy (&cond); | |
80 | ||
81 | return 0; | |
82 | } | |
83 | ||
84 | #include <support/test-driver.c> |