1 /****************************************************************************
2 *
3 * Copyright (C) 2000 Jason Evans <jasone@freebsd.org>.
4 * All rights reserved.
5 *
6 * Redistribution and use in source and binary forms, with or without
7 * modification, are permitted provided that the following conditions
8 * are met:
9 * 1. Redistributions of source code must retain the above copyright
10 * notice(s), this list of conditions and the following disclaimer as
11 * the first lines of this file unmodified other than the possible
12 * addition of one or more copyright notices.
13 * 2. Redistributions in binary form must reproduce the above copyright
14 * notice(s), this list of conditions and the following disclaimer in
15 * the documentation and/or other materials provided with the
16 * distribution.
17 *
18 * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDER(S) ``AS IS'' AND ANY
19 * EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
20 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR
21 * PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT HOLDER(S) BE
22 * LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
23 * CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF
24 * SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR
25 * BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY,
26 * WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE
27 * OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE,
28 * EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
29 *
30 ****************************************************************************
31 *
32 * sem test.
33 *
34 * $FreeBSD: src/lib/libc_r/test/sem_d.c,v 1.1.2.2 2001/06/22 21:44:27 jasone Exp $
35 *
36 ****************************************************************************/
37
38 #include <assert.h>
39 #include <stdio.h>
40 #include <fcntl.h>
41 #include <errno.h>
42 #include <pthread.h>
43 #include <semaphore.h>
44
45 #define NTHREADS 10
46
47 void *
entry(void * a_arg)48 entry(void * a_arg)
49 {
50 sem_t * sem = (sem_t *) a_arg;
51
52 sem_wait(sem);
53 fprintf(stderr, "Got semaphore\n");
54
55 return NULL;
56 }
57
58 int
main()59 main()
60 {
61 sem_t sem_a, sem_b;
62 pthread_t threads[NTHREADS];
63 unsigned i;
64 int val;
65
66 fprintf(stderr, "Test begin\n");
67
68 #ifdef _LIBC_R_
69 assert(-1 == sem_init(&sem_b, 1, 0));
70 assert(EPERM == errno);
71 #endif
72
73 assert(0 == sem_init(&sem_b, 0, 0));
74 assert(0 == sem_getvalue(&sem_b, &val));
75 assert(0 == val);
76
77 assert(0 == sem_post(&sem_b));
78 assert(0 == sem_getvalue(&sem_b, &val));
79 assert(1 == val);
80
81 assert(0 == sem_wait(&sem_b));
82 assert(-1 == sem_trywait(&sem_b));
83 assert(EAGAIN == errno);
84 assert(0 == sem_post(&sem_b));
85 assert(0 == sem_trywait(&sem_b));
86 assert(0 == sem_post(&sem_b));
87 assert(0 == sem_wait(&sem_b));
88 assert(0 == sem_post(&sem_b));
89
90 #ifdef _LIBC_R_
91 assert(SEM_FAILED == sem_open("/foo", O_CREAT | O_EXCL, 0644, 0));
92 assert(ENOSYS == errno);
93
94 assert(-1 == sem_close(&sem_b));
95 assert(ENOSYS == errno);
96
97 assert(-1 == sem_unlink("/foo"));
98 assert(ENOSYS == errno);
99 #endif
100
101 assert(0 == sem_destroy(&sem_b));
102
103 assert(0 == sem_init(&sem_a, 0, 0));
104
105 for (i = 0; i < NTHREADS; i++) {
106 pthread_create(&threads[i], NULL, entry, (void *) &sem_a);
107 }
108
109 for (i = 0; i < NTHREADS; i++) {
110 assert(0 == sem_post(&sem_a));
111 }
112
113 for (i = 0; i < NTHREADS; i++) {
114 pthread_join(threads[i], NULL);
115 }
116
117 for (i = 0; i < NTHREADS; i++) {
118 pthread_create(&threads[i], NULL, entry, (void *) &sem_a);
119 }
120
121 for (i = 0; i < NTHREADS; i++) {
122 assert(0 == sem_post(&sem_a));
123 }
124
125 for (i = 0; i < NTHREADS; i++) {
126 pthread_join(threads[i], NULL);
127 }
128
129 assert(0 == sem_destroy(&sem_a));
130
131 fprintf(stderr, "Test end\n");
132 return 0;
133 }
134