sysdeps/pthread/tst-once1.c

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