QxOrm  1.4.9
C++ Object Relational Mapping library
QxSingleton.h
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00001 /****************************************************************************
00002 **
00003 ** https://www.qxorm.com/
00004 ** Copyright (C) 2013 Lionel Marty (contact@qxorm.com)
00005 **
00006 ** This file is part of the QxOrm library
00007 **
00008 ** This software is provided 'as-is', without any express or implied
00009 ** warranty. In no event will the authors be held liable for any
00010 ** damages arising from the use of this software
00011 **
00012 ** Commercial Usage
00013 ** Licensees holding valid commercial QxOrm licenses may use this file in
00014 ** accordance with the commercial license agreement provided with the
00015 ** Software or, alternatively, in accordance with the terms contained in
00016 ** a written agreement between you and Lionel Marty
00017 **
00018 ** GNU General Public License Usage
00019 ** Alternatively, this file may be used under the terms of the GNU
00020 ** General Public License version 3.0 as published by the Free Software
00021 ** Foundation and appearing in the file 'license.gpl3.txt' included in the
00022 ** packaging of this file. Please review the following information to
00023 ** ensure the GNU General Public License version 3.0 requirements will be
00024 ** met : http://www.gnu.org/copyleft/gpl.html
00025 **
00026 ** If you are unsure which license is appropriate for your use, or
00027 ** if you have questions regarding the use of this file, please contact :
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00030 ****************************************************************************/
00031 
00032 #ifndef _QX_SINGLETON_H_
00033 #define _QX_SINGLETON_H_
00034 
00035 #ifdef _MSC_VER
00036 #pragma once
00037 #endif
00038 
00046 #include <QtCore/qmutex.h>
00047 #include <QtCore/qcoreapplication.h>
00048 
00049 #include <QxSingleton/IxSingleton.h>
00050 
00051 namespace qx {
00052 
00057 template <class T>
00058 class QxSingleton : public IxSingleton
00059 {
00060 
00061 private:
00062 
00063    static T *     m_pSingleton;        
00064    static QMutex  m_oMutexSingleton;   
00065 
00066 protected:
00067 
00068    QxSingleton(const QString & sKey) : IxSingleton(sKey) { ; }
00069    virtual ~QxSingleton() { ; }
00070 
00071 public:
00072 
00073    static T * getSingleton();
00074    static void deleteSingleton();
00075 
00076 protected:
00077 
00078    static bool isSingletonNull() { return (m_pSingleton == NULL); }
00079 
00080    virtual void deleteInstance() { QxSingleton<T>::deleteSingleton(); }
00081 
00082 };
00083 
00084 } // namespace qx
00085 
00086 #include "../../inl/QxSingleton/QxSingleton.inl"
00087 
00088 #endif // _QX_SINGLETON_H_