#ifndef GCC_SYNC_INCLUDED
#define GCC_SYNC_INCLUDED

/* Copyright (c) 2008, 2016, Oracle and/or its affiliates. All rights reserved.

   This program is free software; you can redistribute it and/or modify
   it under the terms of the GNU General Public License, version 2.0,
   as published by the Free Software Foundation.

   This program is also distributed with certain software (including
   but not limited to OpenSSL) that is licensed under separate terms,
   as designated in a particular file or component or in included license
   documentation.  The authors of MySQL hereby grant you an additional
   permission to link the program and your derivative works with the
   separately licensed software that they have included with MySQL.

   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, version 2.0, 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., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301  USA */

/* Old GCC __sync builtins introduced in GCC 4.1 */

static inline int my_atomic_cas32(int32 volatile *a, int32 *cmp, int32 set)
{
  int32 cmp_val= *cmp;
  int32 sav= __sync_val_compare_and_swap(a, cmp_val, set);
  int ret= (sav == cmp_val);
  if (!ret)
    *cmp = sav;
  return ret;
}

static inline int my_atomic_cas64(int64 volatile *a, int64 *cmp, int64 set)
{
  int64 cmp_val= *cmp;
  int64 sav= __sync_val_compare_and_swap(a, cmp_val, set);
  int ret= (sav == cmp_val);
  if (!ret)
    *cmp = sav;
  return ret;
}

static inline int my_atomic_casptr(void * volatile *a, void **cmp, void *set)
{
  void *cmp_val= *cmp;
  void *sav= __sync_val_compare_and_swap(a, cmp_val, set);
  int ret= (sav == cmp_val);
  if (!ret)
    *cmp = sav;
  return ret;
}

static inline int32 my_atomic_add32(int32 volatile *a, int32 v)
{
  return __sync_fetch_and_add(a, v);
}

static inline int64 my_atomic_add64(int64 volatile *a, int64 v)
{
  return __sync_fetch_and_add(a, v);
}

static inline int32 my_atomic_fas32(int32 volatile *a, int32 v)
{
  return __sync_lock_test_and_set(a, v);
}

static inline int64 my_atomic_fas64(int64 volatile *a, int64 v)
{
  return __sync_lock_test_and_set(a, v);
}

static inline void * my_atomic_fasptr(void * volatile *a, void * v)
{
  return __sync_lock_test_and_set(a, v);
}

static inline int32 my_atomic_load32(int32 volatile *a)
{
  return __sync_fetch_and_or(a, 0);
}

static inline int64 my_atomic_load64(int64 volatile *a)
{
  return __sync_fetch_and_or(a, 0);
}

static inline void* my_atomic_loadptr(void * volatile *a)
{
  return __sync_fetch_and_or(a, 0);
}

static inline void my_atomic_store32(int32 volatile *a, int32 v)
{
  (void) __sync_lock_test_and_set(a, v);
}

static inline void my_atomic_store64(int64 volatile *a, int64 v)
{
  (void) __sync_lock_test_and_set(a, v);
}

static inline void my_atomic_storeptr(void * volatile *a, void *v)
{
  (void) __sync_lock_test_and_set(a, v);
}

#endif /* GCC_SYNC_INCLUDED */
