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/*
* Copyright (c) 2012 Ronald S. Bultje <rsbultje@gmail.com>
*
* This file is part of FFmpeg.
*
* FFmpeg 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.
*
* FFmpeg 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 FFmpeg; if not, write to the Free Software
* Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA
*/
#ifndef AVUTIL_ATOMIC_WIN32_H
#define AVUTIL_ATOMIC_WIN32_H
#define WIN32_LEAN_AND_MEAN
#include <windows.h>
#define avpriv_atomic_int_get atomic_int_get_win32
static inline int atomic_int_get_win32(volatile int *ptr)
{
MemoryBarrier();
return *ptr;
}
#define avpriv_atomic_int_set atomic_int_set_win32
static inline void atomic_int_set_win32(volatile int *ptr, int val)
{
*ptr = val;
MemoryBarrier();
}
#define avpriv_atomic_int_add_and_fetch atomic_int_add_and_fetch_win32
static inline int atomic_int_add_and_fetch_win32(volatile int *ptr, int inc)
{
return inc + InterlockedExchangeAdd(ptr, inc);
}
#define avpriv_atomic_ptr_cas atomic_ptr_cas_win32
static inline void *atomic_ptr_cas_win32(void * volatile *ptr,
void *oldval, void *newval)
{
return InterlockedCompareExchangePointer(ptr, newval, oldval);
}
#endif /* AVUTIL_ATOMIC_WIN32_H */
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