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33574c17 ST |
1 | /* Test pthread_rwlock_timedrdlock and pthread_rwlock_timedwrlock. |
2 | Copyright (C) 2000-2018 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 | |
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 | |
17 | <http://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 | #define THREADS 10 | |
29 | ||
30 | pthread_rwlock_t rwlock; | |
31 | ||
32 | void * | |
33 | test (void *arg) | |
34 | { | |
35 | error_t err; | |
36 | int foo = (int) arg; | |
37 | struct timespec ts; | |
38 | struct timeval before, after; | |
39 | int diff; | |
40 | ||
41 | gettimeofday (&before, 0); | |
42 | ts.tv_sec = before.tv_sec + 1; | |
43 | ts.tv_nsec = before.tv_usec * 1000; | |
44 | ||
45 | printf ("Thread %d starting wait @ %d\n", pthread_self (), | |
46 | (int) before.tv_sec); | |
47 | ||
48 | if (foo % 2 == 0) | |
49 | err = pthread_rwlock_timedrdlock (&rwlock, &ts); | |
50 | else | |
51 | err = pthread_rwlock_timedwrlock (&rwlock, &ts); | |
52 | ||
53 | assert (err == ETIMEDOUT); | |
54 | ||
55 | gettimeofday (&after, 0); | |
56 | ||
57 | printf ("Thread %d ending wait @ %d\n", pthread_self (), (int) after.tv_sec); | |
58 | ||
59 | diff = after.tv_sec * 1000000 + after.tv_usec | |
60 | - before.tv_sec * 1000000 - before.tv_usec; | |
61 | ||
62 | if (diff < 900000 || diff > 1100000) | |
63 | error (1, EGRATUITOUS, "pthread_mutex_timedlock waited %d us", diff); | |
64 | ||
65 | return 0; | |
66 | } | |
67 | ||
68 | int | |
69 | main (int argc, char **argv) | |
70 | { | |
71 | error_t err; | |
72 | int i; | |
73 | pthread_t tid[THREADS]; | |
74 | ||
75 | err = pthread_rwlock_init (&rwlock, 0); | |
76 | if (err) | |
77 | error (1, err, "pthread_rwlock_init"); | |
78 | ||
79 | /* Lock it so all the threads will block. */ | |
80 | err = pthread_rwlock_wrlock (&rwlock); | |
81 | assert (err == 0); | |
82 | ||
83 | for (i = 0; i < THREADS; i++) | |
84 | { | |
85 | err = pthread_create (&tid[i], 0, test, (void *) i); | |
86 | if (err) | |
87 | error (1, err, "pthread_create"); | |
88 | } | |
89 | ||
90 | for (i = 0; i < THREADS; i++) | |
91 | { | |
92 | void *ret; | |
93 | ||
94 | err = pthread_join (tid[i], &ret); | |
95 | if (err) | |
96 | error (1, err, "pthread_join"); | |
97 | ||
98 | assert (ret == 0); | |
99 | } | |
100 | ||
101 | return 0; | |
102 | } |