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033d54a2 | 1 | /* Test for sem_post race: bug 14532. |
b168057a | 2 | Copyright (C) 2012-2015 Free Software Foundation, Inc. |
033d54a2 JM |
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 | <http://www.gnu.org/licenses/>. */ | |
18 | ||
19 | #include <pthread.h> | |
20 | #include <semaphore.h> | |
21 | #include <stdio.h> | |
22 | ||
23 | #define NTHREADS 10 | |
24 | #define NITER 100000 | |
25 | ||
26 | sem_t sem; | |
27 | int c; | |
28 | volatile int thread_fail; | |
29 | ||
30 | static void * | |
31 | tf (void *arg) | |
32 | { | |
33 | for (int i = 0; i < NITER; i++) | |
34 | { | |
35 | if (sem_wait (&sem) != 0) | |
36 | { | |
37 | perror ("sem_wait"); | |
38 | thread_fail = 1; | |
39 | } | |
40 | ++c; | |
41 | if (sem_post (&sem) != 0) | |
42 | { | |
43 | perror ("sem_post"); | |
44 | thread_fail = 1; | |
45 | } | |
46 | } | |
47 | return NULL; | |
48 | } | |
49 | ||
50 | static int | |
51 | do_test (void) | |
52 | { | |
53 | if (sem_init (&sem, 0, 0) != 0) | |
54 | { | |
55 | perror ("sem_init"); | |
56 | return 1; | |
57 | } | |
58 | ||
59 | pthread_t th[NTHREADS]; | |
60 | for (int i = 0; i < NTHREADS; i++) | |
61 | { | |
62 | if (pthread_create (&th[i], NULL, tf, NULL) != 0) | |
63 | { | |
64 | puts ("pthread_create failed"); | |
65 | return 1; | |
66 | } | |
67 | } | |
68 | ||
69 | if (sem_post (&sem) != 0) | |
70 | { | |
71 | perror ("sem_post"); | |
72 | return 1; | |
73 | } | |
74 | ||
75 | for (int i = 0; i < NTHREADS; i++) | |
76 | if (pthread_join (th[i], NULL) != 0) | |
77 | { | |
78 | puts ("pthread_join failed"); | |
79 | return 1; | |
80 | } | |
81 | ||
82 | if (c != NTHREADS * NITER) | |
83 | { | |
84 | printf ("c = %d, should be %d\n", c, NTHREADS * NITER); | |
85 | return 1; | |
86 | } | |
87 | return thread_fail; | |
88 | } | |
89 | ||
91e0d40e | 90 | #define TIMEOUT 10 |
033d54a2 JM |
91 | #define TEST_FUNCTION do_test () |
92 | #include "../test-skeleton.c" |