nptl/tst-sem2.c

   1 /* Copyright (C) 2002-2014 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 <semaphore.h>
  21 #include <signal.h>
  22 #include <stdio.h>
  23 #include <unistd.h>
  24
  25
  26 static int
  27 do_test (void)
  28 {
  29   sem_t s;
  30
  31   if (sem_init (&s, 0, 0) == -1)
  32     {
  33       puts ("init failed");
  34       return 1;
  35     }
  36
  37   /* Set an alarm for 1 second.  The wrapper will expect this.  */
  38   alarm (1);
  39
  40   if (TEMP_FAILURE_RETRY (sem_wait (&s)) == -1)
  41     {
  42       puts ("wait failed");
  43       return 1;
  44     }
  45
  46   /* We should never get here.  */
  47   puts ("wait succeeded");
  48   return 1;
  49 }
  50
  51 #define EXPECTED_SIGNAL SIGALRM
  52 #define TEST_FUNCTION do_test ()
  53 #include "../test-skeleton.c"