/**
 * Looking Glass
 * Copyright © 2017-2026 The Looking Glass Authors
 * https://looking-glass.io
 *
 * This program is free software; you can redistribute it and/or modify it
 * under the terms of the GNU General Public License as published by the Free
 * Software Foundation; either version 2 of the License, or (at your option)
 * any later version.
 *
 * This program 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 General Public License for
 * more details.
 *
 * You should have received a copy of the GNU General Public License along
 * with this program; if not, write to the Free Software Foundation, Inc., 59
 * Temple Place, Suite 330, Boston, MA 02111-1307 USA
 */

#ifndef _H_LG_COMMON_LOCKING_
#define _H_LG_COMMON_LOCKING_

#include "time.h"

#include <stdatomic.h>

#define LG_LOCK_MODE "Atomic"
typedef atomic_flag LG_Lock;
#define LG_LOCK_INIT(x) atomic_flag_clear(&(x))
#define LG_LOCK(x) \
  while(atomic_flag_test_and_set_explicit(&(x), memory_order_acquire)) { ; }
#define LG_UNLOCK(x) \
  atomic_flag_clear_explicit(&(x), memory_order_release);
#define LG_LOCK_FREE(x)

#define INTERLOCKED_INC(x) atomic_fetch_add((x), 1)
#define INTERLOCKED_DEC(x) atomic_fetch_sub((x), 1)

#define INTERLOCKED_SECTION(lock, ...) \
  LG_LOCK(lock) \
  __VA_ARGS__ \
  LG_UNLOCK(lock)

#endif