65 lines
1.5 KiB
C++
65 lines
1.5 KiB
C++
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/*
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* Copyright (c) 2012 The WebRTC project authors. All Rights Reserved.
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*
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* Use of this source code is governed by a BSD-style license
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* that can be found in the LICENSE file in the root of the source
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* tree. An additional intellectual property rights grant can be found
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* in the file PATENTS. All contributing project authors may
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* be found in the AUTHORS file in the root of the source tree.
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*/
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#include "atomic32.h"
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#include <assert.h>
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#include <inttypes.h>
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#include <malloc.h>
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#include "common_types.h"
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namespace webrtc {
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Atomic32::Atomic32(WebRtc_Word32 initialValue) : _value(initialValue)
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{
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assert(Is32bitAligned());
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}
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Atomic32::~Atomic32()
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{
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}
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WebRtc_Word32 Atomic32::operator++()
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{
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return __sync_fetch_and_add(&_value, 1) + 1;
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}
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WebRtc_Word32 Atomic32::operator--()
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{
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return __sync_fetch_and_sub(&_value, 1) - 1;
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}
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WebRtc_Word32 Atomic32::operator+=(WebRtc_Word32 value)
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{
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WebRtc_Word32 returnValue = __sync_fetch_and_add(&_value, value);
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returnValue += value;
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return returnValue;
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}
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WebRtc_Word32 Atomic32::operator-=(WebRtc_Word32 value)
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{
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WebRtc_Word32 returnValue = __sync_fetch_and_sub(&_value, value);
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returnValue -= value;
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return returnValue;
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}
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bool Atomic32::CompareExchange(WebRtc_Word32 newValue,
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WebRtc_Word32 compareValue)
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{
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return __sync_bool_compare_and_swap(&_value, compareValue, newValue);
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}
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WebRtc_Word32 Atomic32::Value() const
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{
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return _value;
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}
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} // namespace webrtc
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