BackendFactory.h
21370709ad4fdev-arne

BackendFactory.h
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			/**
			* \file BackendFactory.h
			*
			* \date Jun 21, 2012
			* \author Alexandre Tuleu
			*/

			#ifndef LIBONCILLA_BACKENDFACTORY_H_
			#define LIBONCILLA_BACKENDFACTORY_H_

			#include <map>
			#include <tr1/memory>

			namespace rci{
			namespace oncilla{


			class OncillaSynchronizer;
			typedef std::tr1::shared_ptr<OncillaSynchronizer> OncillaSynchronizerPtr;

			class BackendFactory {
			public :
			/**
			* define the priority of the backend
			*/
			enum Priority{
			HARDWARE = 0,
			SIMULATION = 1,
			USER_DEFINED_PRIORITY = 2
			};
			/**
			* Pointer to a function that will be the entry of the Backend.
			*/
			typedef OncillaSynchronizerPtr (*EntryPtr)();

			static BackendFactory & Instance();

			/**
			* Register a new backend.
			* \param p the Priority of the backend
			* \param entry the EntryPtr of the backend
			* \warning : if a backend with the same priority is already here, the call
			* will be silently discarded.
			*/
			void RegisterBackend(Priority p, EntryPtr entry);
			/**
			* \return the EntryPtr of the highest priority backend or 0 if none was
			* registered with RegisterBackend().
			*/
			EntryPtr HighestPriorityBackend() const;

			private:
			typedef std::map<Priority,EntryPtr> EntryByPriority;

			EntryByPriority d_entries;

			};

			#endif // LIBONCILLA_BACKENDFACTORY_H_
			}
			}