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/*-
* Copyright (c) 2008 Dag-Erling Coïdan Smørgrav
* 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, this list of conditions and the following disclaimer
* in this position and unchanged.
* 2. Redistributions in binary form must reproduce the above copyright
* notice, 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 AUTHOR AND CONTRIBUTORS ``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 AUTHOR OR CONTRIBUTORS 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.
*
* $FreeBSD$
*/
#include <pthread.h>
#include <pthread_np.h>
#include <stdio.h>
#include <stdlib.h>
static void *
thread(void *arg)
{
pthread_mutex_t *mtx = arg;
if (pthread_mutex_islocked_np(mtx) != 0) {
printf("pthread_mutex_islocked_np() returned non-zero\n"
"for a mutex held by another thread\n");
exit(1);
}
return (NULL);
}
int
main(int argc, char *argv[])
{
pthread_t thr;
pthread_mutex_t mtx;
pthread_mutex_init(&mtx, NULL);
if (pthread_mutex_islocked_np(&mtx) != 0) {
printf("pthread_mutex_islocked_np() returned non-zero\n"
"for a mutex that is not held\n");
exit(1);
}
pthread_mutex_lock(&mtx);
if (pthread_mutex_islocked_np(&mtx) == 0) {
printf("pthread_mutex_islocked_np() returned zero\n"
"for a mutex we hold ourselves\n");
exit(1);
}
pthread_create(&thr, NULL, thread, &mtx);
pthread_join(thr, NULL);
pthread_mutex_unlock(&mtx);
if (pthread_mutex_islocked_np(&mtx) != 0) {
printf("pthread_mutex_islocked_np() returned non-zero\n"
"for a mutex that is not held\n");
exit(1);
}
printf("OK\n");
exit(0);
}
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