QxOrm 1.1.8
C++ Object Relational Mapping library
QxSingleton.h
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00001 /****************************************************************************
00002 **
00003 ** http://www.qxorm.com/
00004 ** http://sourceforge.net/projects/qxorm/
00005 ** Original file by Lionel Marty
00006 **
00007 ** This file is part of the QxOrm library
00008 **
00009 ** This software is provided 'as-is', without any express or implied
00010 ** warranty. In no event will the authors be held liable for any
00011 ** damages arising from the use of this software.
00012 **
00013 ** GNU Lesser General Public License Usage
00014 ** This file must be used under the terms of the GNU Lesser
00015 ** General Public License version 2.1 as published by the Free Software
00016 ** Foundation and appearing in the file 'license.lgpl.txt' included in the
00017 ** packaging of this file.  Please review the following information to
00018 ** ensure the GNU Lesser General Public License version 2.1 requirements
00019 ** will be met: http://www.gnu.org/licenses/old-licenses/lgpl-2.1.html.
00020 **
00021 ** If you have questions regarding the use of this file, please contact :
00022 ** contact@qxorm.com
00023 **
00024 ****************************************************************************/
00025 
00026 #ifndef _QX_SINGLETON_H_
00027 #define _QX_SINGLETON_H_
00028 
00029 #ifdef _MSC_VER
00030 #pragma once
00031 #endif
00032 
00040 #include <QtCore/qmutex.h>
00041 #include <QtCore/qcoreapplication.h>
00042 
00043 #include <QxSingleton/IxSingleton.h>
00044 
00045 namespace qx {
00046 
00051 template <class T>
00052 class QxSingleton : public IxSingleton
00053 {
00054 
00055 private:
00056 
00057    static T *     m_pSingleton;        
00058    static QMutex  m_oMutexSingleton;   
00059 
00060 protected:
00061 
00062    QxSingleton(const QString & sKey) : IxSingleton(sKey) { ; }
00063    virtual ~QxSingleton() { ; }
00064 
00065 public:
00066 
00067    static T * getSingleton();
00068    static void deleteSingleton();
00069 
00070 protected:
00071 
00072    static bool isSingletonNull() { return (m_pSingleton == NULL); }
00073 
00074    virtual void deleteInstance() { QxSingleton<T>::deleteSingleton(); }
00075 
00076 };
00077 
00078 } // namespace qx
00079 
00080 #include "../../inl/QxSingleton/QxSingleton.inl"
00081 
00082 #endif // _QX_SINGLETON_H_
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