tools/regression/pthread/mutex_isowned_np/mutex_isowned_np.c

   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 }