78 lines
2.4 KiB
C
78 lines
2.4 KiB
C
/*-
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* Copyright (c) 2008 Dag-Erling Coïdan Smørgrav
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* All rights reserved.
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*
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* Redistribution and use in source and binary forms, with or without
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* modification, are permitted provided that the following conditions
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* are met:
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* 1. Redistributions of source code must retain the above copyright
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* notice, this list of conditions and the following disclaimer
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* in this position and unchanged.
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* 2. Redistributions in binary form must reproduce the above copyright
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* notice, this list of conditions and the following disclaimer in the
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* documentation and/or other materials provided with the distribution.
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*
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* THIS SOFTWARE IS PROVIDED BY THE AUTHOR AND CONTRIBUTORS ``AS IS'' AND
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* ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
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* IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
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* ARE DISCLAIMED. IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE
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* FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
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* DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
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* OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
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* HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
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* LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
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* OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
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* SUCH DAMAGE.
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*
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* $FreeBSD$
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*/
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#include <pthread.h>
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#include <pthread_np.h>
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#include <stdio.h>
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#include <stdlib.h>
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static void *
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thread(void *arg)
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{
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pthread_mutex_t *mtx = arg;
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if (pthread_mutex_isowned_np(mtx) != 0) {
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printf("pthread_mutex_isowned_np() returned non-zero\n"
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"for a mutex held by another thread\n");
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exit(1);
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}
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return (NULL);
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}
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int
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main(int argc, char *argv[])
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{
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pthread_t thr;
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pthread_mutex_t mtx;
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pthread_mutex_init(&mtx, NULL);
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if (pthread_mutex_isowned_np(&mtx) != 0) {
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printf("pthread_mutex_isowned_np() returned non-zero\n"
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"for a mutex that is not held\n");
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exit(1);
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}
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pthread_mutex_lock(&mtx);
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if (pthread_mutex_isowned_np(&mtx) == 0) {
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printf("pthread_mutex_isowned_np() returned zero\n"
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"for a mutex we hold ourselves\n");
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exit(1);
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}
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pthread_create(&thr, NULL, thread, &mtx);
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pthread_join(thr, NULL);
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pthread_mutex_unlock(&mtx);
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if (pthread_mutex_isowned_np(&mtx) != 0) {
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printf("pthread_mutex_isowned_np() returned non-zero\n"
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"for a mutex that is not held\n");
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exit(1);
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}
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printf("OK\n");
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exit(0);
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}
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