atomic_win32: Drop unnecessary atomic.h #include
[libav.git] / libavutil / atomic_win32.h
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1/*
2 * Copyright (c) 2012 Ronald S. Bultje <rsbultje@gmail.com>
3 *
4 * This file is part of Libav.
5 *
6 * Libav is free software; you can redistribute it and/or
7 * modify it under the terms of the GNU Lesser General Public
8 * License as published by the Free Software Foundation; either
9 * version 2.1 of the License, or (at your option) any later version.
10 *
11 * Libav is distributed in the hope that it will be useful,
12 * but WITHOUT ANY WARRANTY; without even the implied warranty of
13 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
14 * Lesser General Public License for more details.
15 *
16 * You should have received a copy of the GNU Lesser General Public
17 * License along with Libav; if not, write to the Free Software
18 * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA
19 */
20
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21#ifndef AVUTIL_ATOMIC_WIN32_H
22#define AVUTIL_ATOMIC_WIN32_H
23
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24#include <windows.h>
25
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26#define avpriv_atomic_int_get atomic_int_get_win32
27static inline int atomic_int_get_win32(volatile int *ptr)
28{
29 MemoryBarrier();
30 return *ptr;
31}
32
33#define avpriv_atomic_int_set atomic_int_set_win32
34static inline void atomic_int_set_win32(volatile int *ptr, int val)
35{
36 *ptr = val;
37 MemoryBarrier();
38}
39
40#define avpriv_atomic_int_add_and_fetch atomic_int_add_and_fetch_win32
41static inline int atomic_int_add_and_fetch_win32(volatile int *ptr, int inc)
42{
43 return inc + InterlockedExchangeAdd(ptr, inc);
44}
45
46#define avpriv_atomic_ptr_cas atomic_ptr_cas_win32
47static inline void *atomic_ptr_cas_win32(void * volatile *ptr,
48 void *oldval, void *newval)
49{
50 return InterlockedCompareExchangePointer(ptr, newval, oldval);
51}
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52
53#endif /* AVUTIL_ATOMIC_WIN32_H */