blob: 40862fb492e6c0b2464cda38264b33666e8ec9f4 [file] [log] [blame]
* Copyright (c) 2011 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.
// Atomic system independant 32-bit integer.
// Note: uses full memory barriers.
// Note: assumes 32-bit (or higher) system
#include "common_types.h"
namespace webrtc {
class Atomic32Impl;
class Atomic32Wrapper
Atomic32Wrapper(WebRtc_Word32 initialValue = 0);
// Prefix operator!
WebRtc_Word32 operator++();
WebRtc_Word32 operator--();
Atomic32Wrapper& operator=(const Atomic32Wrapper& rhs);
Atomic32Wrapper& operator=(WebRtc_Word32 rhs);
WebRtc_Word32 operator+=(WebRtc_Word32 rhs);
WebRtc_Word32 operator-=(WebRtc_Word32 rhs);
// Sets the value atomically to newValue if the value equals compare value.
// The function returns true if the exchange happened.
bool CompareExchange(WebRtc_Word32 newValue, WebRtc_Word32 compareValue);
WebRtc_Word32 Value() const;
// Disable the + and - operator since it's unclear what these operations
// should do.
Atomic32Wrapper operator+(const Atomic32Wrapper& rhs);
Atomic32Wrapper operator-(const Atomic32Wrapper& rhs);
WebRtc_Word32& operator++(int);
WebRtc_Word32& operator--(int);
// Cheshire cat to hide the implementation (faster than
// using virtual functions)
Atomic32Impl& _impl;
} // namespace webrtc