1  /* Copyright (C) 2002-2023 Free Software Foundation, Inc.
       2     This file is part of the GNU C Library.
       3  
       4     The GNU C Library is free software; you can redistribute it and/or
       5     modify it under the terms of the GNU Lesser General Public
       6     License as published by the Free Software Foundation; either
       7     version 2.1 of the License, or (at your option) any later version.
       8  
       9     The GNU C Library is distributed in the hope that it will be useful,
      10     but WITHOUT ANY WARRANTY; without even the implied warranty of
      11     MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
      12     Lesser General Public License for more details.
      13  
      14     You should have received a copy of the GNU Lesser General Public
      15     License along with the GNU C Library; if not, see
      16     <https://www.gnu.org/licenses/>.  */
      17  
      18  #include <errno.h>
      19  #include <pthread.h>
      20  #include <stdio.h>
      21  #include <stdlib.h>
      22  #include <string.h>
      23  #include <time.h>
      24  #include <sys/time.h>
      25  
      26  
      27  static pthread_mutex_t mut;
      28  static pthread_cond_t cond = PTHREAD_COND_INITIALIZER;
      29  
      30  
      31  static int
      32  do_test (void)
      33  {
      34    pthread_mutexattr_t ma;
      35    int err;
      36    struct timespec ts;
      37    struct timeval tv;
      38  
      39    if (pthread_mutexattr_init (&ma) != 0)
      40      {
      41        puts ("mutexattr_init failed");
      42        exit (1);
      43      }
      44  
      45    if (pthread_mutexattr_settype (&ma, PTHREAD_MUTEX_ERRORCHECK) != 0)
      46      {
      47        puts ("mutexattr_settype failed");
      48        exit (1);
      49      }
      50  
      51    if (pthread_mutex_init (&mut, &ma) != 0)
      52      {
      53        puts ("mutex_init failed");
      54        exit (1);
      55      }
      56  
      57    /* Get the mutex.  */
      58    if (pthread_mutex_lock (&mut) != 0)
      59      {
      60        puts ("mutex_lock failed");
      61        exit (1);
      62      }
      63  
      64    /* Waiting for the condition will fail.  But we want the timeout here.  */
      65    if (gettimeofday (&tv, NULL) != 0)
      66      {
      67        puts ("gettimeofday failed");
      68        exit (1);
      69      }
      70  
      71    TIMEVAL_TO_TIMESPEC (&tv, &ts);
      72    ts.tv_nsec += 500000000;
      73    if (ts.tv_nsec >= 1000000000)
      74      {
      75        ts.tv_nsec -= 1000000000;
      76        ++ts.tv_sec;
      77      }
      78    err = pthread_cond_timedwait (&cond, &mut, &ts);
      79    if (err == 0)
      80      {
      81        /* This could in theory happen but here without any signal and
      82  	 additional waiter it should not.  */
      83        puts ("cond_timedwait succeeded");
      84        exit (1);
      85      }
      86    else if (err != ETIMEDOUT)
      87      {
      88        printf ("cond_timedwait returned with %s\n", strerror (err));
      89        exit (1);
      90      }
      91  
      92    err = pthread_mutex_unlock (&mut);
      93    if (err != 0)
      94      {
      95        printf ("mutex_unlock failed: %s\n", strerror (err));
      96        exit (1);
      97      }
      98  
      99    return 0;
     100  }
     101  
     102  
     103  #define TEST_FUNCTION do_test ()
     104  #include "../test-skeleton.c"