nptl/tst-mtx-recursive.c

   1 /* C11 threads recursive mutex tests.
   2    Copyright (C) 2018-2019 Free Software Foundation, Inc.
   3    This file is part of the GNU C Library.
   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    <https://www.gnu.org/licenses/>.  */
  18
  19 #include <threads.h>
  20 #include <stdio.h>
  21 #include <unistd.h>
  22
  23 #include <support/check.h>
  24
  25 static int
  26 do_test (void)
  27 {
  28   static mtx_t mutex;
  29
  30   if (mtx_init (&mutex, mtx_recursive) != thrd_success)
  31     FAIL_EXIT1 ("mtx_init failed");
  32
  33   if (mtx_lock (&mutex) != thrd_success)
  34     FAIL_EXIT1 ("mtx_lock failed");
  35
  36   /* Lock mutex second time, if not recursive should deadlock.  */
  37   if (mtx_lock (&mutex) != thrd_success)
  38     FAIL_EXIT1 ("mtx_lock failed");
  39
  40   mtx_destroy (&mutex);
  41
  42   return 0;
  43 }
  44
  45 #include <support/test-driver.c>