nptl/tst-once1.c

   1 /* Copyright (C) 2002-2017 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 <pthread.h>
  20 #include <stdio.h>
  21
  22
  23 static pthread_once_t once = PTHREAD_ONCE_INIT;
  24
  25 static int global;
  26
  27 static void
  28 once_handler (void)
  29 {
  30   ++global;
  31 }
  32
  33
  34 static int
  35 do_test (void)
  36 {
  37   pthread_once (&once, once_handler);
  38   pthread_once (&once, once_handler);
  39
  40   if (global != 1)
  41     {
  42       printf ("global = %d, expected 1\n", global);
  43       return 1;
  44     }
  45
  46   return 0;
  47 }
  48
  49 #define TEST_FUNCTION do_test ()
  50 #include "../test-skeleton.c"