sysdeps/pthread/tst-sem10.c

   1 /* Copyright (C) 2007-2022 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 <semaphore.h>
  21 #include <stdio.h>
  22 #include <time.h>
  23 #include <unistd.h>
  24 #include <sys/time.h>
  25
  26
  27 static int
  28 do_test (void)
  29 {
  30   sem_t s;
  31   if (sem_init (&s, 0, 0) == -1)
  32     {
  33       puts ("sem_init failed");
  34       return 1;
  35     }
  36
  37   struct timeval tv;
  38   if (gettimeofday (&tv, NULL) != 0)
  39     {
  40       puts ("gettimeofday failed");
  41       return 1;
  42     }
  43
  44   struct timespec ts;
  45   TIMEVAL_TO_TIMESPEC (&tv, &ts);
  46
  47   /* Set ts to yesterday.  */
  48   ts.tv_sec -= 86400;
  49
  50   int type_before;
  51   if (pthread_setcanceltype (PTHREAD_CANCEL_DEFERRED, &type_before) != 0)
  52     {
  53       puts ("first pthread_setcanceltype failed");
  54       return 1;
  55     }
  56
  57   errno = 0;
  58   if (TEMP_FAILURE_RETRY (sem_timedwait (&s, &ts)) != -1)
  59     {
  60       puts ("sem_timedwait succeeded");
  61       return 1;
  62     }
  63   if (errno != ETIMEDOUT)
  64     {
  65       printf ("sem_timedwait return errno = %d instead of ETIMEDOUT\n",
  66               errno);
  67       return 1;
  68     }
  69
  70   int type_after;
  71   if (pthread_setcanceltype (PTHREAD_CANCEL_DEFERRED, &type_after) != 0)
  72     {
  73       puts ("second pthread_setcanceltype failed");
  74       return 1;
  75     }
  76   if (type_after != PTHREAD_CANCEL_DEFERRED)
  77     {
  78       puts ("sem_timedwait changed cancellation type");
  79       return 1;
  80     }
  81
  82   return 0;
  83 }
  84
  85 #define TEST_FUNCTION do_test ()
  86 #include "../test-skeleton.c"