1/*-
2 * Copyright (c) 2008 Dag-Erling Sm��rgrav
3 * All rights reserved.
4 *
5 * Redistribution and use in source and binary forms, with or without
6 * modification, are permitted provided that the following conditions
7 * are met:
8 * 1. Redistributions of source code must retain the above copyright
9 *    notice, this list of conditions and the following disclaimer
10 *    in this position and unchanged.
11 * 2. Redistributions in binary form must reproduce the above copyright
12 *    notice, this list of conditions and the following disclaimer in the
13 *    documentation and/or other materials provided with the distribution.
14 *
15 * THIS SOFTWARE IS PROVIDED BY THE AUTHOR AND CONTRIBUTORS ``AS IS'' AND
16 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
17 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
18 * ARE DISCLAIMED.  IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE
19 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
20 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
21 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
22 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
23 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
24 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
25 * SUCH DAMAGE.
26 */
27
28#include <pthread.h>
29#include <pthread_np.h>
30#include <stdio.h>
31#include <stdlib.h>
32
33static void *
34thread(void *arg)
35{
36	pthread_mutex_t *mtx = arg;
37
38	if (pthread_mutex_isowned_np(mtx) != 0) {
39		printf("pthread_mutex_isowned_np() returned non-zero\n"
40		    "for a mutex held by another thread\n");
41		exit(1);
42	}
43	return (NULL);
44}
45
46int
47main(void)
48{
49	pthread_t thr;
50	pthread_mutex_t mtx;
51
52	pthread_mutex_init(&mtx, NULL);
53	if (pthread_mutex_isowned_np(&mtx) != 0) {
54		printf("pthread_mutex_isowned_np() returned non-zero\n"
55		    "for a mutex that is not held\n");
56		exit(1);
57	}
58	pthread_mutex_lock(&mtx);
59	if (pthread_mutex_isowned_np(&mtx) == 0) {
60		printf("pthread_mutex_isowned_np() returned zero\n"
61		    "for a mutex we hold ourselves\n");
62		exit(1);
63	}
64	pthread_create(&thr, NULL, thread, &mtx);
65	pthread_join(thr, NULL);
66	pthread_mutex_unlock(&mtx);
67	if (pthread_mutex_isowned_np(&mtx) != 0) {
68		printf("pthread_mutex_isowned_np() returned non-zero\n"
69		    "for a mutex that is not held\n");
70		exit(1);
71	}
72
73	printf("OK\n");
74	exit(0);
75}
76