SingletonHolder.h
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00001 //
00002 // SingletonHolder.h
00003 //
00004 // $Id: //poco/1.3/Foundation/include/Poco/SingletonHolder.h#1 $
00005 //
00006 // Library: Foundation
00007 // Package: Core
00008 // Module:  SingletonHolder
00009 //
00010 // Definition of the SingletonHolder template.
00011 //
00012 // Copyright (c) 2004-2006, Applied Informatics Software Engineering GmbH.
00013 // and Contributors.
00014 //
00015 // Permission is hereby granted, free of charge, to any person or organization
00016 // obtaining a copy of the software and accompanying documentation covered by
00017 // this license (the "Software") to use, reproduce, display, distribute,
00018 // execute, and transmit the Software, and to prepare derivative works of the
00019 // Software, and to permit third-parties to whom the Software is furnished to
00020 // do so, all subject to the following:
00021 // 
00022 // The copyright notices in the Software and this entire statement, including
00023 // the above license grant, this restriction and the following disclaimer,
00024 // must be included in all copies of the Software, in whole or in part, and
00025 // all derivative works of the Software, unless such copies or derivative
00026 // works are solely in the form of machine-executable object code generated by
00027 // a source language processor.
00028 // 
00029 // THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
00030 // IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
00031 // FITNESS FOR A PARTICULAR PURPOSE, TITLE AND NON-INFRINGEMENT. IN NO EVENT
00032 // SHALL THE COPYRIGHT HOLDERS OR ANYONE DISTRIBUTING THE SOFTWARE BE LIABLE
00033 // FOR ANY DAMAGES OR OTHER LIABILITY, WHETHER IN CONTRACT, TORT OR OTHERWISE,
00034 // ARISING FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER
00035 // DEALINGS IN THE SOFTWARE.
00036 //
00037 
00038 
00039 #ifndef Foundation_SingletonHolder_INCLUDED
00040 #define Foundation_SingletonHolder_INCLUDED
00041 
00042 
00043 #include "Poco/Foundation.h"
00044 #include "Poco/Mutex.h"
00045 
00046 
00047 namespace Poco {
00048 
00049 
00050 template <class S>
00051 class SingletonHolder
00057 {
00058 public:
00059         SingletonHolder()
00061         {
00062                 _pS = 0;
00063         }
00064         ~SingletonHolder()
00067         {
00068                 delete _pS;
00069         }
00070         S* get()
00074         {
00075                 FastMutex::ScopedLock lock(_m);
00076                 if (!_pS) _pS = new S;
00077                 return _pS;
00078         }
00079         
00080 private:
00081         S* _pS;
00082         FastMutex _m;
00083 };
00084 
00085 
00086 } // namespace Poco
00087 
00088 
00089 #endif // Foundation_SingletonHolder_INCLUDED


pluginlib
Author(s): Tully Foote and Eitan Marder-Eppstein
autogenerated on Sat Dec 28 2013 17:20:19