blob: d3728465d147dbf1a4ca0d6771a0aacf86e3bc7e (
plain)
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
|
/*
* Copyright (c) 2012 The WebRTC project authors. All Rights Reserved.
*
* Use of this source code is governed by a BSD-style license
* that can be found in the LICENSE file in the root of the source
* tree. An additional intellectual property rights grant can be found
* in the file PATENTS. All contributing project authors may
* be found in the AUTHORS file in the root of the source tree.
*/
#include "webrtc/system_wrappers/interface/atomic32.h"
#include <assert.h>
#include <libkern/OSAtomic.h>
#include <stdlib.h>
#include "webrtc/common_types.h"
namespace webrtc {
Atomic32::Atomic32(int32_t initial_value)
: value_(initial_value) {
assert(Is32bitAligned());
}
Atomic32::~Atomic32() {
}
int32_t Atomic32::operator++() {
return OSAtomicIncrement32Barrier(&value_);
}
int32_t Atomic32::operator--() {
return OSAtomicDecrement32Barrier(&value_);
}
int32_t Atomic32::operator+=(int32_t value) {
return OSAtomicAdd32Barrier(value, &value_);
}
int32_t Atomic32::operator-=(int32_t value) {
return OSAtomicAdd32Barrier(-value, &value_);
}
bool Atomic32::CompareExchange(int32_t new_value, int32_t compare_value) {
return OSAtomicCompareAndSwap32Barrier(compare_value, new_value, &value_);
}
} // namespace webrtc
|
