nptl/tst-cond5.c

   1 /* Copyright (C) 2002-2018 Free Software Foundation, Inc.
   2    This file is part of the GNU C Library.
   3    Contributed by Ulrich Drepper <drepper@redhat.com>, 2002.
   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 <errno.h>
  20 #include <pthread.h>
  21 #include <stdio.h>
  22 #include <stdlib.h>
  23 #include <string.h>
  24 #include <time.h>
  25 #include <sys/time.h>
  26
  27
  28 static pthread_mutex_t mut;
  29 static pthread_cond_t cond = PTHREAD_COND_INITIALIZER;
  30
  31
  32 static int
  33 do_test (void)
  34 {
  35   pthread_mutexattr_t ma;
  36   int err;
  37   struct timespec ts;
  38   struct timeval tv;
  39
  40   if (pthread_mutexattr_init (&ma) != 0)
  41     {
  42       puts ("mutexattr_init failed");
  43       exit (1);
  44     }
  45
  46   if (pthread_mutexattr_settype (&ma, PTHREAD_MUTEX_ERRORCHECK) != 0)
  47     {
  48       puts ("mutexattr_settype failed");
  49       exit (1);
  50     }
  51
  52   if (pthread_mutex_init (&mut, &ma) != 0)
  53     {
  54       puts ("mutex_init failed");
  55       exit (1);
  56     }
  57
  58   /* Get the mutex.  */
  59   if (pthread_mutex_lock (&mut) != 0)
  60     {
  61       puts ("mutex_lock failed");
  62       exit (1);
  63     }
  64
  65   /* Waiting for the condition will fail.  But we want the timeout here.  */
  66   if (gettimeofday (&tv, NULL) != 0)
  67     {
  68       puts ("gettimeofday failed");
  69       exit (1);
  70     }
  71
  72   TIMEVAL_TO_TIMESPEC (&tv, &ts);
  73   ts.tv_nsec += 500000000;
  74   if (ts.tv_nsec >= 1000000000)
  75     {
  76       ts.tv_nsec -= 1000000000;
  77       ++ts.tv_sec;
  78     }
  79   err = pthread_cond_timedwait (&cond, &mut, &ts);
  80   if (err == 0)
  81     {
  82       /* This could in theory happen but here without any signal and
  83          additional waiter it should not.  */
  84       puts ("cond_timedwait succeeded");
  85       exit (1);
  86     }
  87   else if (err != ETIMEDOUT)
  88     {
  89       printf ("cond_timedwait returned with %s\n", strerror (err));
  90       exit (1);
  91     }
  92
  93   err = pthread_mutex_unlock (&mut);
  94   if (err != 0)
  95     {
  96       printf ("mutex_unlock failed: %s\n", strerror (err));
  97       exit (1);
  98     }
  99
 100   return 0;
 101 }
 102
 103
 104 #define TEST_FUNCTION do_test ()
 105 #include "../test-skeleton.c"