1 /*- 2 * Copyright (c) 2008 Dag-Erling Coïdan Smørgrav 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 * $FreeBSD$ 28 */ 29 30 #include <pthread.h> 31 #include <pthread_np.h> 32 #include <stdio.h> 33 #include <stdlib.h> 34 35 static void * 36 thread(void *arg) 37 { 38 pthread_mutex_t *mtx = arg; 39 40 if (pthread_mutex_isowned_np(mtx) != 0) { 41 printf("pthread_mutex_isowned_np() returned non-zero\n" 42 "for a mutex held by another thread\n"); 43 exit(1); 44 } 45 return (NULL); 46 } 47 48 int 49 main(int argc, char *argv[]) 50 { 51 pthread_t thr; 52 pthread_mutex_t mtx; 53 54 pthread_mutex_init(&mtx, NULL); 55 if (pthread_mutex_isowned_np(&mtx) != 0) { 56 printf("pthread_mutex_isowned_np() returned non-zero\n" 57 "for a mutex that is not held\n"); 58 exit(1); 59 } 60 pthread_mutex_lock(&mtx); 61 if (pthread_mutex_isowned_np(&mtx) == 0) { 62 printf("pthread_mutex_isowned_np() returned zero\n" 63 "for a mutex we hold ourselves\n"); 64 exit(1); 65 } 66 pthread_create(&thr, NULL, thread, &mtx); 67 pthread_join(thr, NULL); 68 pthread_mutex_unlock(&mtx); 69 if (pthread_mutex_isowned_np(&mtx) != 0) { 70 printf("pthread_mutex_isowned_np() returned non-zero\n" 71 "for a mutex that is not held\n"); 72 exit(1); 73 } 74 75 printf("OK\n"); 76 exit(0); 77 } 78