/usr/include/zthread/AtomicCount.h is in libzthread-dev 2.3.2-8.
This file is owned by root:root, with mode 0o644.
The actual contents of the file can be viewed below.
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* Copyright (c) 2005, Eric Crahen
*
* Permission is hereby granted, free of charge, to any person obtaining a copy
* of this software and associated documentation files (the "Software"), to deal
* in the Software without restriction, including without limitation the rights
* to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
* copies of the Software, and to permit persons to whom the Software is furnished
* to do so, subject to the following conditions:
*
* The above copyright notice and this permission notice shall be included in all
* copies or substantial portions of the Software.
*
* THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
* IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
* FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
* AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY,
* WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN
* CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.
*
*/
#ifndef __ZTATOMICCOUNT_H__
#define __ZTATOMICCOUNT_H__
#include <cstdlib>
#include "zthread/Config.h"
#include "zthread/NonCopyable.h"
namespace ZThread {
/**
* @class AtomicCount
* @author Eric Crahen <http://www.code-foo.com>
* @date <2003-07-16T09:41:55-0400>
* @version 2.3.0
*
* This class provides an interface to a small integer whose value can be
* incremented or decremented atomically. It's designed to be as simple and
* lightweight as possible so that it can be used cheaply to create reference
* counts.
*/
class ZTHREAD_API AtomicCount : public NonCopyable {
void* _value;
public:
//! Create a new AtomicCount, initialized to a value of 1
AtomicCount();
//! Destroy a new AtomicCount
~AtomicCount();
//! Postfix decrement and return the current value
size_t operator--(int);
//! Postfix increment and return the current value
size_t operator++(int);
//! Prefix decrement and return the current value
size_t operator--();
//! Prefix increment and return the current value
size_t operator++();
}; /* AtomicCount */
} // namespace ZThread
#endif // __ZTATOMICCOUNT_H__
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