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 * $FreeBSD$
35 *
36 ****************************************************************************/
37
38#include <assert.h>
39#include <stdio.h>
40#include <fcntl.h>
41#include <errno.h>
42#include <semaphore.h>
43#include <pthread.h>
44
45#define NTHREADS 10
46
47void *
48entry(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
58int
59main()
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