regress/lib/libpthread/rwlock1/rwlock1.c

   1 /*      $NetBSD: rwlock1.c,v 1.1 2004/08/03 11:36:23 yamt Exp $ */
   2
   3 /*-
   4  * Copyright (c)2004 YAMAMOTO Takashi,
   5  * All rights reserved.
   6  *
   7  * Redistribution and use in source and binary forms, with or without
   8  * modification, are permitted provided that the following conditions
   9  * are met:
  10  * 1. Redistributions of source code must retain the above copyright
  11  *    notice, this list of conditions and the following disclaimer.
  12  * 2. Redistributions in binary form must reproduce the above copyright
  13  *    notice, this list of conditions and the following disclaimer in the
  14  *    documentation and/or other materials provided with the distribution.
  15  *
  16  * THIS SOFTWARE IS PROVIDED BY THE AUTHOR AND CONTRIBUTORS ``AS IS'' AND
  17  * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
  18  * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
  19  * ARE DISCLAIMED.  IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE
  20  * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
  21  * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
  22  * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
  23  * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
  24  * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
  25  * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
  26  * SUCH DAMAGE.
  27  */
  28
  29 #include <err.h>
  30 #include <errno.h>
  31 #include <pthread.h>
  32 #include <stdlib.h>
  33
  34 pthread_rwlock_t lk;
  35
  36 int main(void);
  37 void *do_nothing(void *);
  38
  39 struct timespec to;
  40
  41 /* ARGSUSED */
  42 void *
  43 do_nothing(void *dummy)
  44 {
  45
  46         return NULL;
  47 }
  48
  49 int
  50 main()
  51 {
  52         int error;
  53         pthread_t t;
  54
  55         error = pthread_create(&t, NULL, do_nothing, NULL);
  56         if (error)
  57                 exit(1000);
  58
  59         error = pthread_rwlock_init(&lk, NULL);
  60         if (error)
  61                 exit(1);
  62
  63         error = pthread_rwlock_rdlock(&lk);
  64         if (error)
  65                 exit(2);
  66
  67         error = pthread_rwlock_rdlock(&lk);
  68         if (error)
  69                 exit(3);
  70
  71         error = pthread_rwlock_unlock(&lk);
  72         if (error)
  73                 exit(4);
  74
  75         error = pthread_rwlock_trywrlock(&lk);
  76         if (error != EBUSY)
  77                 exit(5);
  78
  79         if (clock_gettime(CLOCK_REALTIME, &to))
  80                 err(101, "clock_gettime");
  81         to.tv_sec++;
  82         error = pthread_rwlock_timedwrlock(&lk, &to);
  83         if (error != ETIMEDOUT && error != EDEADLK)
  84                 exit(6);
  85
  86         error = pthread_rwlock_unlock(&lk);
  87         if (error)
  88                 exit(7);
  89
  90         if (clock_gettime(CLOCK_REALTIME, &to))
  91                 err(102, "clock_gettime");
  92         to.tv_sec++;
  93         error = pthread_rwlock_timedwrlock(&lk, &to);
  94         if (error)
  95                 exit(8);
  96
  97         if (clock_gettime(CLOCK_REALTIME, &to))
  98                 err(103, "clock_gettime");
  99         to.tv_sec++;
 100         error = pthread_rwlock_timedwrlock(&lk, &to);
 101         if (error != ETIMEDOUT && error != EDEADLK)
 102                 exit(9);
 103
 104         exit(0);
 105
 106         /* NOTREACHED */
 107 }