/home/sebastian/gpudbms/trunk/hype-library/include/query_processing/virtual_processing_device.hpp

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#pragma once

#include <list>
#include <memory>

#include <config/global_definitions.hpp>
#include <core/scheduling_decision.hpp>
#include <core/specification.hpp>

namespace hype
{
        namespace queryprocessing
        {

                class VirtualProcessingDevice{
                        typedef std::list<core::SchedulingDecision> TaskQueue;
                public:
                        explicit VirtualProcessingDevice(const core::DeviceSpecification& dev_spec_);
                        
                        bool addRunningOperation(const core::SchedulingDecision&); //called by getOptimalAlgorithm
                        
                        bool removeFinishedOperation(const core::SchedulingDecision&); //called by addObservation
                        
                        unsigned int getNumberOfRunningOperations() const;
                        
                        double getEstimatedFinishingTime() const;
                        
                        bool isIdle() const;
                        
                        const core::DeviceSpecification& getDeviceSpecification() const throw(); 
                        
                        void print() const throw();
                private: 
                        core::DeviceSpecification dev_spec_;
                        std::list<core::SchedulingDecision> scheduled_tasks_;
                };
                
                typedef std::tr1::shared_ptr<VirtualProcessingDevice> VirtualProcessingDevicePtr;
                
                //VirtualProcessingDevice& getVirtualProcessingDevice(ProcessingDeviceID);


        }; //end namespace queryprocessing
}; //end namespace hype