50 lines
1.2 KiB
C++
50 lines
1.2 KiB
C++
/*
|
|
* 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/include/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
|