yading@11: /*
yading@11:  * Copyright (c) 2012 Ronald S. Bultje <rsbultje@gmail.com>
yading@11:  *
yading@11:  * This file is part of FFmpeg.
yading@11:  *
yading@11:  * FFmpeg is free software; you can redistribute it and/or
yading@11:  * modify it under the terms of the GNU Lesser General Public
yading@11:  * License as published by the Free Software Foundation; either
yading@11:  * version 2.1 of the License, or (at your option) any later version.
yading@11:  *
yading@11:  * FFmpeg is distributed in the hope that it will be useful,
yading@11:  * but WITHOUT ANY WARRANTY; without even the implied warranty of
yading@11:  * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
yading@11:  * Lesser General Public License for more details.
yading@11:  *
yading@11:  * You should have received a copy of the GNU Lesser General Public
yading@11:  * License along with FFmpeg; if not, write to the Free Software
yading@11:  * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA
yading@11:  */
yading@11: 
yading@11: #ifndef AVUTIL_ATOMIC_WIN32_H
yading@11: #define AVUTIL_ATOMIC_WIN32_H
yading@11: 
yading@11: #include <windows.h>
yading@11: 
yading@11: #include "atomic.h"
yading@11: 
yading@11: #define avpriv_atomic_int_get atomic_int_get_win32
yading@11: static inline int atomic_int_get_win32(volatile int *ptr)
yading@11: {
yading@11:     MemoryBarrier();
yading@11:     return *ptr;
yading@11: }
yading@11: 
yading@11: #define avpriv_atomic_int_set atomic_int_set_win32
yading@11: static inline void atomic_int_set_win32(volatile int *ptr, int val)
yading@11: {
yading@11:     *ptr = val;
yading@11:     MemoryBarrier();
yading@11: }
yading@11: 
yading@11: #define avpriv_atomic_int_add_and_fetch atomic_int_add_and_fetch_win32
yading@11: static inline int atomic_int_add_and_fetch_win32(volatile int *ptr, int inc)
yading@11: {
yading@11:     return inc + InterlockedExchangeAdd(ptr, inc);
yading@11: }
yading@11: 
yading@11: #define avpriv_atomic_ptr_cas atomic_ptr_cas_win32
yading@11: static inline void *atomic_ptr_cas_win32(void * volatile *ptr,
yading@11:                                          void *oldval, void *newval)
yading@11: {
yading@11:     return InterlockedCompareExchangePointer(ptr, newval, oldval);
yading@11: }
yading@11: 
yading@11: #endif /* AVUTIL_ATOMIC_WIN32_H */