path: root/misc/tst-atomic.c

/* Tests for atomic.h macros.
   Copyright (C) 2003-2025 Free Software Foundation, Inc.
   This file is part of the GNU C Library.

   The GNU C Library is free software; you can redistribute it and/or
   modify it under the terms of the GNU Lesser General Public
   License as published by the Free Software Foundation; either
   version 2.1 of the License, or (at your option) any later version.

   The GNU C Library is distributed in the hope that it will be useful,
   but WITHOUT ANY WARRANTY; without even the implied warranty of
   MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
   Lesser General Public License for more details.

   You should have received a copy of the GNU Lesser General Public
   License along with the GNU C Library; if not, see
   <https://www.gnu.org/licenses/>.  */

#ifndef __clang__
#include <stdio.h>
#include <atomic.h>

#ifndef atomic_t
# define atomic_t int
#endif

/* Test various atomic.h macros.  */
static int
do_test (void)
{
  atomic_t mem, expected;
  int ret = 0;

#ifdef atomic_compare_and_exchange_val_acq
  mem = 24;
  if (atomic_compare_and_exchange_val_acq (&mem, 35, 24) != 24
      || mem != 35)
    {
      puts ("atomic_compare_and_exchange_val_acq test 1 failed");
      ret = 1;
    }

  mem = 12;
  if (atomic_compare_and_exchange_val_acq (&mem, 10, 15) != 12
      || mem != 12)
    {
      puts ("atomic_compare_and_exchange_val_acq test 2 failed");
      ret = 1;
    }

  mem = -15;
  if (atomic_compare_and_exchange_val_acq (&mem, -56, -15) != -15
      || mem != -56)
    {
      puts ("atomic_compare_and_exchange_val_acq test 3 failed");
      ret = 1;
    }

  mem = -1;
  if (atomic_compare_and_exchange_val_acq (&mem, 17, 0) != -1
      || mem != -1)
    {
      puts ("atomic_compare_and_exchange_val_acq test 4 failed");
      ret = 1;
    }
#endif

  mem = 24;
  if (atomic_compare_and_exchange_bool_acq (&mem, 35, 24)
      || mem != 35)
    {
      puts ("atomic_compare_and_exchange_bool_acq test 1 failed");
      ret = 1;
    }

  mem = 12;
  if (! atomic_compare_and_exchange_bool_acq (&mem, 10, 15)
      || mem != 12)
    {
      puts ("atomic_compare_and_exchange_bool_acq test 2 failed");
      ret = 1;
    }

  mem = -15;
  if (atomic_compare_and_exchange_bool_acq (&mem, -56, -15)
      || mem != -56)
    {
      puts ("atomic_compare_and_exchange_bool_acq test 3 failed");
      ret = 1;
    }

  mem = -1;
  if (! atomic_compare_and_exchange_bool_acq (&mem, 17, 0)
      || mem != -1)
    {
      puts ("atomic_compare_and_exchange_bool_acq test 4 failed");
      ret = 1;
    }

  mem = 64;
  if (atomic_exchange_acq (&mem, 31) != 64
      || mem != 31)
    {
      puts ("atomic_exchange_acq test failed");
      ret = 1;
    }

  mem = 2;
  if (atomic_exchange_and_add (&mem, 11) != 2
      || mem != 13)
    {
      puts ("atomic_exchange_and_add test failed");