aboutsummaryrefslogtreecommitdiffstats
path: root/libavutil/atomic_win32.h
blob: 84e8b7f0c1c40d66c4798c239ec3952e30865a0f (plain) (blame)
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
/*
 * Copyright (c) 2012 Ronald S. Bultje <rsbultje@gmail.com>
 *
 * This file is part of Libav.
 *
 * Libav 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.
 *
 * Libav 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 Libav; 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

#include <windows.h>

#include "atomic.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 */