nptl/tst-robust10.c

   1 /* Test that pthread_mutex_timedlock properly times out.
   2    Copyright (C) 2016-2018 Free Software Foundation, Inc.
   3    This file is part of the GNU C Library.
   4
   5    The GNU C Library is free software; you can redistribute it and/or
   6    modify it under the terms of the GNU Lesser General Public
   7    License as published by the Free Software Foundation; either
   8    version 2.1 of the License, or (at your option) any later version.
   9
  10    The GNU C Library is distributed in the hope that it will be useful,
  11    but WITHOUT ANY WARRANTY; without even the implied warranty of
  12    MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
  13    Lesser General Public License for more details.
  14
  15    You should have received a copy of the GNU Lesser General Public
  16    License along with the GNU C Library; if not, see
  17    <http://www.gnu.org/licenses/>.  */
  18
  19 #include <pthread.h>
  20 #include <stdio.h>
  21 #include <stdlib.h>
  22 #include <string.h>
  23 #include <errno.h>
  24
  25 pthread_mutex_t mutex;
  26
  27 static void *
  28 thr (void *arg)
  29 {
  30   struct timespec abstime;
  31   clock_gettime (CLOCK_REALTIME, &abstime);
  32   abstime.tv_sec += 1;
  33   int ret = pthread_mutex_timedlock (&mutex, &abstime);
  34   if (ret == 0)
  35     {
  36       puts ("mutex_timedlock didn't fail");
  37       exit (1);
  38     }
  39   if (ret != ETIMEDOUT)
  40     {
  41       printf ("mutex_timedlock failed: %s\n", strerror (ret));
  42       exit (1);
  43     }
  44
  45   return 0;
  46 }
  47
  48 static int
  49 do_test (void)
  50 {
  51   pthread_t pt;
  52   pthread_mutexattr_t ma;
  53
  54   if (pthread_mutexattr_init (&ma) != 0)
  55     {
  56       puts ("mutexattr_init failed");
  57       return 0;
  58     }
  59   if (pthread_mutexattr_setrobust_np (&ma, PTHREAD_MUTEX_ROBUST_NP) != 0)
  60     {
  61       puts ("mutexattr_setrobust failed");
  62       return 1;
  63     }
  64   if (pthread_mutex_init (&mutex, &ma))
  65     {
  66       puts ("mutex_init failed");
  67       return 1;
  68     }
  69
  70   if (pthread_mutexattr_destroy (&ma))
  71     {
  72       puts ("mutexattr_destroy failed");
  73       return 1;
  74     }
  75
  76   if (pthread_mutex_lock (&mutex))
  77     {
  78       puts ("mutex_lock failed");
  79       return 1;
  80     }
  81
  82   if (pthread_create (&pt, NULL, thr, NULL))
  83     {
  84       puts ("pthread_create failed");
  85       return 1;
  86     }
  87
  88   if (pthread_join (pt, NULL))
  89     {
  90       puts ("pthread_join failed");
  91       return 1;
  92     }
  93
  94   if (pthread_mutex_unlock (&mutex))
  95     {
  96       puts ("mutex_unlock failed");
  97       return 1;
  98     }
  99
 100   if (pthread_mutex_destroy (&mutex))
 101     {
 102       puts ("mutex_destroy failed");
 103       return 1;
 104     }
 105
 106   return 0;
 107 }
 108
 109 #define TEST_FUNCTION do_test ()
 110 #include "../test-skeleton.c"