/*
 <moCudaVectorEval.h>
 Copyright (C) DOLPHIN Project-Team, INRIA Lille - Nord Europe, 2006-2010

 Karima Boufaras, Thé Van LUONG

 This software is governed by the CeCILL license under French law and
 abiding by the rules of distribution of free software.  You can  use,
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 license as circulated by CEA, CNRS and INRIA at the following URL
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 */

#ifndef moCudaVectorEval_H
#define moCudavectorEval_H
#include <eval/moCudaEval.h>
#include <eval/moCudakernelEval.h>

/**
 * class for the cuda evaluation
 */

template<class Neighbor, class IncrementEval>
class moCudaVectorEval: public moCudaEval<Neighbor> {

public:

	/**
	 * Define type of a solution corresponding to Neighbor
	 */
	typedef typename Neighbor::EOT EOT;
	/**
	 * Define type of a vector corresponding to Solution
	 */
	typedef typename EOT::ElemType T;
	/**
	 * Define type of a fitness corresponding to Solution
	 */
	typedef typename EOT::Fitness Fitness;

	using moCudaEval<Neighbor>::neighborhoodSize;
	using moCudaEval<Neighbor>::host_FitnessArray;
	using moCudaEval<Neighbor>::device_FitnessArray;
	using moCudaEval<Neighbor>::device_solution;
	using moCudaEval<Neighbor>::kernel_Dim;

	/**
	 * Constructor
	 * @param _neighborhoodSize the size of the neighborhood
	 * @param _incrEval the incremental evaluation
	 */

	moCudaVectorEval(unsigned _neighborhoodSize, IncrementEval & _incrEval) :
			moCudaEval<Neighbor> (_neighborhoodSize), incrEval(_incrEval) {
		}
	/**
	 * Compute fitness for all solution neighbors in device
	 * @param _sol the solution which generate the neighborhood
	 */

	virtual void neighborhoodEval(EOT & _sol) {

		// the solution vector size
		unsigned _size = _sol.size();

		// Get Current solution fitness
		Fitness fitness = _sol.fitness();

		//Allocate the space for solution in the  global memory of device
		cudaMalloc((void**) &device_solution.vect, _size * sizeof(T));

		//Copy the solution vector from the host to device
		cudaMemcpy(device_solution.vect, _sol.vect, _size * sizeof(T),
				cudaMemcpyHostToDevice);

		//Launch the Kernel to compute all neighbors fitness
		kernelEval<EOT,Fitness,Neighbor,IncrementEval><<<kernel_Dim,BLOCK_SIZE >>>(incrEval,device_solution,device_FitnessArray,fitness,neighborhoodSize);

		//Copy the result from device to host
		cudaMemcpy(host_FitnessArray, device_FitnessArray, neighborhoodSize
				* sizeof(Fitness), cudaMemcpyDeviceToHost);

	}

protected:

	IncrementEval & incrEval;

};

#endif