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/*
* Copyright (C) 2013-2015, 2019 by the Konclude Developer Team.
*
* This file is part of the reasoning system Konclude.
* For details and support, see <http://konclude.com/>.
*
* Konclude is free software: you can redistribute it and/or modify
* it under the terms of version 3 of the GNU Lesser General Public
* License (LGPLv3) as published by the Free Software Foundation.
*
* Konclude is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
* GNU (Lesser) General Public License for more details.
*
* You should have received a copy of the GNU (Lesser) General Public
* License along with Konclude. If not, see <http://www.gnu.org/licenses/>.
*
*/
#ifndef KONCLUDE_UTILITIES_CSINGLETONPROVIDER_H
#define KONCLUDE_UTILITIES_CSINGLETONPROVIDER_H
// Libraries includes
#include <QMutex>
// Namespace includes
// Other includes
// Logger includes
#include "Logger/CLogger.h"
using namespace Konclude::Logger;
namespace Konclude {
namespace Utilities {
/*!
*
* \class CSingletonProvider
* \author Andreas Steigmiller
* \version 0.1
* \brief TODO
*
*/
template<class T>
class CSingletonProvider {
// public Functions
public:
//! Constructor
CSingletonProvider();
//! Destructor
virtual ~CSingletonProvider();
static T *getInstance();
static bool hasInstance();
// private Functions
private:
// private Variables
private:
static QMutex *syncMutex;
static T *instance;
};
template<class T>
T *CSingletonProvider<T>::instance = 0;
template<class T>
QMutex *CSingletonProvider<T>::syncMutex = new QMutex();
template<class T>
CSingletonProvider<T>::CSingletonProvider() {
}
template<class T>
CSingletonProvider<T>::~CSingletonProvider() {
}
template<class T>
T *CSingletonProvider<T>::getInstance() {
if (instance == 0) {
syncMutex->lock();
if (instance == 0) {
instance = new T();
}
syncMutex->unlock();
}
return instance;
}
template<class T>
bool CSingletonProvider<T>::hasInstance() {
return instance != 0;
}
}; // end namespace Utilities
}; // end namespace Konclude
#endif // KONCLUDE_UTILITIES_CSINGLETONPROVIDER_H
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