152 lines
4.8 KiB
C++
152 lines
4.8 KiB
C++
// Ryzom - MMORPG Framework <http://dev.ryzom.com/projects/ryzom/>
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// Copyright (C) 2010 Winch Gate Property Limited
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//
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// This program is free software: you can redistribute it and/or modify
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// it under the terms of the GNU Affero General Public License as
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// published by the Free Software Foundation, either version 3 of the
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// License, or (at your option) any later version.
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//
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// This program is distributed in the hope that it will be useful,
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// but WITHOUT ANY WARRANTY; without even the implied warranty of
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// MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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// GNU Affero General Public License for more details.
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//
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// You should have received a copy of the GNU Affero General Public License
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// along with this program. If not, see <http://www.gnu.org/licenses/>.
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/*
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NOTE: The following extension would be intelligent:
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---------------------------------------------------
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- add 'preInit', 'preServiceUpdate', 'preTickUpdate' and 'preRelease' methods
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- add 'postInit', 'postServiceUpdate', 'postTickUpdate' and 'postRelease' methods
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- call all 'preXXX' methods followed by all XXX methods followed by all postXXX methods
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=> This allows one to open log files etc in pre-init, start counters in pre-update, stop counters in post-update, etc...
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*/
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#ifndef SINGLETON_REGISTRY_H
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#define SINGLETON_REGISTRY_H
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//-------------------------------------------------------------------------------------------------
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// includes
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//-------------------------------------------------------------------------------------------------
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#include <set>
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//-------------------------------------------------------------------------------------------------
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// class IServiceSingleton
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//-------------------------------------------------------------------------------------------------
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class IServiceSingleton
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{
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public:
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// overloadable method called at service initialisation
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virtual void init() {}
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// overloadable method called in the service update
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virtual void serviceUpdate() {}
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// overloadable method called in the tick update
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virtual void tickUpdate() {}
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// overloadable method called at service release
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virtual void release() {}
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protected:
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// protect from untrolled instantiation
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// this method registers the singleton with the singleton registry
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IServiceSingleton();
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private:
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// prohibit copy
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IServiceSingleton(const IServiceSingleton&);
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};
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//-------------------------------------------------------------------------------------------------
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// class CSingletonRegistry
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//-------------------------------------------------------------------------------------------------
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class CSingletonRegistry
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{
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public:
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// public interface for getting hold of the singleton instance
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static CSingletonRegistry* getInstance();
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// registration of an IServiceSingleton object with the singleton
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void registerSingleton(IServiceSingleton*);
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// methods called from the service loop
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void init();
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void serviceUpdate();
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void tickUpdate();
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void release();
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private:
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// prohibit uncontrolled instantiation
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CSingletonRegistry() {}
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CSingletonRegistry(const CSingletonRegistry&);
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typedef std::set<IServiceSingleton*> TSingletons;
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TSingletons _Singletons;
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};
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//-------------------------------------------------------------------------------------------------
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// inlines IServiceSingleton
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//-------------------------------------------------------------------------------------------------
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inline IServiceSingleton::IServiceSingleton()
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{
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CSingletonRegistry::getInstance()->registerSingleton(this);
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}
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//-------------------------------------------------------------------------------------------------
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// inlines CSingletonRegistry
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//-------------------------------------------------------------------------------------------------
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inline CSingletonRegistry* CSingletonRegistry::getInstance()
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{
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static CSingletonRegistry* instance= NULL;
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if (instance==NULL)
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{
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instance=new CSingletonRegistry;
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}
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return instance;
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}
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inline void CSingletonRegistry::registerSingleton(IServiceSingleton* singleton)
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{
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_Singletons.insert(singleton);
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}
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inline void CSingletonRegistry::init()
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{
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for (TSingletons::iterator it=_Singletons.begin(); it!=_Singletons.end();++it)
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(*it)->init();
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}
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inline void CSingletonRegistry::tickUpdate()
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{
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for (TSingletons::iterator it=_Singletons.begin(); it!=_Singletons.end();++it)
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(*it)->tickUpdate();
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}
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inline void CSingletonRegistry::serviceUpdate()
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{
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for (TSingletons::iterator it=_Singletons.begin(); it!=_Singletons.end();++it)
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(*it)->serviceUpdate();
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}
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inline void CSingletonRegistry::release()
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{
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for (TSingletons::iterator it=_Singletons.begin(); it!=_Singletons.end();++it)
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(*it)->release();
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}
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//-------------------------------------------------------------------------------------------------
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#endif
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