summaryrefslogtreecommitdiffstats
path: root/lib/libkse/test/sem_d.c
blob: b834591852d96da5031faede935939c90374ef24 (plain)
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
131
132
133
/****************************************************************************
 *
 * Copyright (C) 2000 Jason Evans <jasone@freebsd.org>.
 * All rights reserved.
 * 
 * Redistribution and use in source and binary forms, with or without
 * modification, are permitted provided that the following conditions
 * are met:
 * 1. Redistributions of source code must retain the above copyright
 *    notice(s), this list of conditions and the following disclaimer as
 *    the first lines of this file unmodified other than the possible
 *    addition of one or more copyright notices.
 * 2. Redistributions in binary form must reproduce the above copyright
 *    notice(s), this list of conditions and the following disclaimer in
 *    the documentation and/or other materials provided with the
 *    distribution.
 * 
 * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDER(S) ``AS IS'' AND ANY
 * EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR
 * PURPOSE ARE DISCLAIMED.  IN NO EVENT SHALL THE COPYRIGHT HOLDER(S) BE
 * LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
 * CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF
 * SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR
 * BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY,
 * WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE
 * OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE,
 * EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
 *
 ****************************************************************************
 *
 * sem test.
 *
 * $FreeBSD$
 *
 ****************************************************************************/

#include <assert.h>
#include <stdio.h>
#include <fcntl.h>
#include <errno.h>
#include <semaphore.h>
#include <pthread.h>

#define NTHREADS 10

void *
entry(void * a_arg)
{
	sem_t * sem = (sem_t *) a_arg;

	sem_wait(sem);
	fprintf(stderr, "Got semaphore\n");
  
	return NULL;
}

int
main()
{
	sem_t sem_a, sem_b;
	pthread_t threads[NTHREADS];
	unsigned i;
	int val;
  
	fprintf(stderr, "Test begin\n");

#ifdef _LIBC_R_
	assert(-1 == sem_init(&sem_b, 1, 0));
	assert(EPERM == errno);
#endif

	assert(0 == sem_init(&sem_b, 0, 0));
	assert(0 == sem_getvalue(&sem_b, &val));
	assert(0 == val);
  
	assert(0 == sem_post(&sem_b));
	assert(0 == sem_getvalue(&sem_b, &val));
	assert(1 == val);
  
	assert(0 == sem_wait(&sem_b));
	assert(-1 == sem_trywait(&sem_b));
	assert(EAGAIN == errno);
	assert(0 == sem_post(&sem_b));
	assert(0 == sem_trywait(&sem_b));
	assert(0 == sem_post(&sem_b));
	assert(0 == sem_wait(&sem_b));
	assert(0 == sem_post(&sem_b));

#ifdef _LIBC_R_
	assert(SEM_FAILED == sem_open("/foo", O_CREAT | O_EXCL, 0644, 0));
	assert(ENOSYS == errno);

	assert(-1 == sem_close(&sem_b));
	assert(ENOSYS == errno);
  
	assert(-1 == sem_unlink("/foo"));
	assert(ENOSYS == errno);
#endif

	assert(0 == sem_destroy(&sem_b));
  
	assert(0 == sem_init(&sem_a, 0, 0));

	for (i = 0; i < NTHREADS; i++) {
		pthread_create(&threads[i], NULL, entry, (void *) &sem_a);
	}

	for (i = 0; i < NTHREADS; i++) {
		assert(0 == sem_post(&sem_a));
	}
  
	for (i = 0; i < NTHREADS; i++) {
		pthread_join(threads[i], NULL);
	}
  
	for (i = 0; i < NTHREADS; i++) {
		pthread_create(&threads[i], NULL, entry, (void *) &sem_a);
	}

	for (i = 0; i < NTHREADS; i++) {
		assert(0 == sem_post(&sem_a));
	}
  
	for (i = 0; i < NTHREADS; i++) {
		pthread_join(threads[i], NULL);
	}
  
	assert(0 == sem_destroy(&sem_a));

	fprintf(stderr, "Test end\n");
	return 0;
}
OpenPOWER on IntegriCloud