singletonholder.hpp

"More for C++" is a class library that provides some features that are usually common for object ori

//
//  This file is part of the "More for C++" library
//
//  Copyright (c) 1999-2003 by Thorsten Goertz ([e-mail])
//
//  The "More for C++" library is free software; you can redistribute it and/or
//  modify it under the terms of the license that comes with this package.
//
//  Read "license.txt" for more details.
//
//  THIS PACKAGE IS PROVIDED "AS IS" AND WITHOUT ANY EXPRESS OR IMPLIED
//  WARRANTIES, INCLUDING, WITHOUT LIMITATION, THE IMPLIED WARRANTIES
//  OF MERCHANTIBILITY AND FITNESS FOR A PARTICULAR PURPOSE.

////////////////////////////////////////////////////////////////////////////////

#ifndef SINGLETONHOLDER_HPP
#define SINGLETONHOLDER_HPP

//////////////////////////////////////////////////////////////////////////

#include <more/stl.hpp>
#include <more/core/static.hpp>
#include <more/os/mutex.hpp>
#include <more/util/singleton.hpp>

////////////////////////////////////////////////////////////////////////////////

namespace more
{
  namespace util
  {
    class SingletonHolder
    {
      public:
        static void init( );
        static void dispose( );
        static p<SingletonBase> access( SingletonBase*& rpInstance,
                                        SingletonBase*  pNewInstance,
                                        bool            bUpdateInstance );
      private:
        typedef more::stl::Set<p<SingletonBase> > Singletons;
        static SingletonHolder instance;
        static p<more::os::Mutex>* ppMutex;
        static p<Singletons>* ppSingletons;
    };
  }
}

////////////////////////////////////////////////////////////////////////////////

#endif