counter.hpp

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/*
    Copyright 2013 Adobe
    Distributed under the Boost Software License, Version 1.0.
    (See accompanying file LICENSE_1_0.txt or copy at http://www.boost.org/LICENSE_1_0.txt)
*/
/******************************************************************************/
 
#ifndef ADOBE_COUNTER_HPP
#define ADOBE_COUNTER_HPP
 
/******************************************************************************/
 
#include <adobe/config.hpp>
 
#include <boost/noncopyable.hpp>
 
#include <adobe/implementation/atomic_primitives.hpp>
 
/******************************************************************************/
 
namespace adobe {
 
/******************************************************************************/





 
 
class counter_t
#if !defined(ADOBE_NO_DOCUMENTATION)
    : boost::noncopyable
#endif
{
public:
    counter_t() { count_m = implementation::atomic_t::value_type(1); }
 
    void increment() { ++count_m; }
 
    bool decrement() { return --count_m == implementation::atomic_t::value_type(0); }
 
    bool is_one() const { return count_m == implementation::atomic_t::value_type(1); }
 
private:
    implementation::atomic_t::type count_m;
};
 
/******************************************************************************/
 
} // namespace adobe
 
/******************************************************************************/
// ADOBE_COUNTER_HPP
#endif
 
/******************************************************************************/