QxSingleton.h

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/****************************************************************************
**
** https://www.qxorm.com/
** Copyright (C) 2013 Lionel Marty (contact@qxorm.com)
**
** This file is part of the QxOrm library
**
** This software is provided 'as-is', without any express or implied
** warranty. In no event will the authors be held liable for any
** damages arising from the use of this software
**
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** accordance with the commercial license agreement provided with the
** Software or, alternatively, in accordance with the terms contained in
** a written agreement between you and Lionel Marty
**
** GNU General Public License Usage
** Alternatively, this file may be used under the terms of the GNU
** General Public License version 3.0 as published by the Free Software
** Foundation and appearing in the file 'license.gpl3.txt' included in the
** packaging of this file. Please review the following information to
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#ifndef _QX_SINGLETON_H_
#define _QX_SINGLETON_H_

#ifdef _MSC_VER
#pragma once
#endif

#include <QtCore/qmutex.h>
#include <QtCore/qcoreapplication.h>

#include <QxSingleton/IxSingleton.h>

namespace qx {

template <class T>
class QxSingleton : public IxSingleton
{

private:

   static T *     m_pSingleton;        
   static QMutex  m_oMutexSingleton;   

protected:

   QxSingleton(const QString & sKey) : IxSingleton(sKey) { ; }
   virtual ~QxSingleton() { ; }

public:

   static T * getSingleton();
   static void deleteSingleton();

protected:

   static bool isSingletonNull() { return (m_pSingleton == NULL); }

   virtual void deleteInstance() { QxSingleton<T>::deleteSingleton(); }

};

} // namespace qx

#include "../../inl/QxSingleton/QxSingleton.inl"

#endif // _QX_SINGLETON_H_