77 lines
1.2 KiB
C++
77 lines
1.2 KiB
C++
//This file is part of Photon (http://photon.sourceforge.net)
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//Copyright (C) 2004-2005 James Turk
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//
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// Author:
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// James Turk (jpt2433@rit.edu)
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//
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// Version:
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// $Id: Singleton.hpp,v 1.3 2005/02/27 07:43:37 cozman Exp $
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#ifndef PHOTON_UTIL_SINGLETON_HPP
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#define PHOTON_UTIL_SINGLETON_HPP
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#include <memory>
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#include <boost/utility.hpp>
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namespace photon
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{
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namespace util
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{
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template<class T>
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class Singleton : public boost::noncopyable
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{
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public:
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static void initialize();
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static void destroy();
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static T& getInstance();
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protected:
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virtual ~Singleton()=0;
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private:
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static std::auto_ptr<T> instance_;
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};
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// template implementation
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template<class T>
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Singleton<T>::~Singleton()
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{
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}
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template<class T>
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void Singleton<T>::initialize()
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{
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assert(instance_.get() == 0);
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instance_ = std::auto_ptr<T>(new T);
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}
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template<class T>
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void Singleton<T>::destroy()
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{
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assert(instance_.get() != 0);
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instance_.reset();
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}
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template<class T>
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T& Singleton<T>::getInstance()
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{
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assert(instance_.get() != 0);
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return *instance_;
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}
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template<class T>
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std::auto_ptr<T> Singleton<T>::instance_(0);
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}
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}
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#endif //PHOTON_UTIL_SINGLETON_HPP
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