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/*
* 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 "atomic32.h"
#include <assert.h>
#include <inttypes.h>
#include <malloc.h>
#include "common_types.h"
namespace webrtc {
Atomic32::Atomic32(WebRtc_Word32 initialValue) : _value(initialValue)
{
assert(Is32bitAligned());
}
Atomic32::~Atomic32()
{
}
WebRtc_Word32 Atomic32::operator++()
{
return __sync_fetch_and_add(&_value, 1) + 1;
}
WebRtc_Word32 Atomic32::operator--()
{
return __sync_fetch_and_sub(&_value, 1) - 1;
}
WebRtc_Word32 Atomic32::operator+=(WebRtc_Word32 value)
{
WebRtc_Word32 returnValue = __sync_fetch_and_add(&_value, value);
returnValue += value;
return returnValue;
}
WebRtc_Word32 Atomic32::operator-=(WebRtc_Word32 value)
{
WebRtc_Word32 returnValue = __sync_fetch_and_sub(&_value, value);
returnValue -= value;
return returnValue;
}
bool Atomic32::CompareExchange(WebRtc_Word32 newValue,
WebRtc_Word32 compareValue)
{
return __sync_bool_compare_and_swap(&_value, compareValue, newValue);
}
WebRtc_Word32 Atomic32::Value() const
{
return _value;
}
} // namespace webrtc
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