/*
 <moGPUKernelEvalByModif.h>
 Copyright (C) DOLPHIN Project-Team, INRIA Lille - Nord Europe, 2006-2012

 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,
 modify and/ or redistribute the software under the terms of the CeCILL
 license as circulated by CEA, CNRS and INRIA at the following URL
 "http://www.cecill.info".

 As a counterpart to the access to the source code and  rights to copy,
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 economic rights,  and the successive licensors  have only  limited liability.

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 */

#ifndef __moGPUKernelEvalByModif_H
#define __moGPUKernelEvalByModif_H
///////////////////////////////////////////////////////////////////////////////////////////////////////////////

/**
 * The kernel function called from the host and executed in device to compute all neighbors fitness at one time
 * without mapping, each thread id compute one fitness by modif of solution
 * @param _eval how to evaluate each neighbor
 * @param _solution the representation of solution( vector of int,float....)
 * @param _allFitness the array of Fitness to save all neighbors fitness
 * @param _fitness the current solution fitness
 * @param _neighborhoodsize the size of the neighborhood
 */

template<class T, class Fitness, class Eval>

__global__ void moGPUKernelEvalByModif(Eval _eval, T * _solution, Fitness* _allFitness,
		Fitness _fitness, unsigned _neighborhoodsize) {

	// The thread identifier within a grid block's
	int id = blockIdx.x * blockDim.x + threadIdx.x;
	// array to save index to be changed
	unsigned index[2];
	// In this representation each id identify one and only one neighbor in neighborhood
	if (id < _neighborhoodsize) {
		//Change the id'th element of solution
		index[0]=id;
		index[1]=_neighborhoodsize;
		//Compute fitness for id'th neighbor
		_allFitness[id] = _eval(_solution,_fitness,index);
	}
}

#endif