cuda_grid_gpu_funcs.cuh

/*
 * cuda_grid_gpu_funcs.cuh
 *
 *  Created on: Aug 20, 2018
 *      Author: i-bird
 */

#ifndef CUDA_GRID_GPU_FUNCS_CUH_
#define CUDA_GRID_GPU_FUNCS_CUH_

#include "config.h"
#include "util/cuda_launch.hpp"
#include "map_grid_cuda_ker.cuh"

#if defined(CUDA_GPU) && defined(__NVCC__)

template<unsigned int dim, typename grid_type>
__global__ void copy_ndim_grid_block_device(grid_type src, grid_type dst)
{
    unsigned int i = blockIdx.x;

    if (i >= src.getGrid().size() || i >= dst.getGrid().size())
    {return;}

    auto key_src = src.getGrid().InvLinId(i);

    dst.get_o(key_src) = src.get_o(key_src);
};

template<unsigned int dim, typename grid_type>
struct copy_ndim_grid_impl
{
    static __device__ void copy(grid_type & src, grid_type & dst)
    {
        unsigned int i = threadIdx.x + blockIdx.x * blockDim.x;

        if (i >= src.getGrid().size() || i >= dst.getGrid().size())
        {return;}

        auto key_src = src.getGrid().InvLinId(i);

        dst.get_o(key_src) = src.get_o(key_src);
    }
};

template<typename grid_type>
struct copy_ndim_grid_impl<2,grid_type>
{
    static __device__ void copy(grid_type & src, grid_type & dst)
    {
        grid_key_dx<2> key_src;
        key_src.set_d(0,threadIdx.x + blockIdx.x * blockDim.x);
        key_src.set_d(1,threadIdx.y + blockIdx.y * blockDim.y);

        if (key_src.get(0) >= src.getGrid().size(0))    {return;}
        if (key_src.get(1) >= src.getGrid().size(1))    {return;}

        if (key_src.get(0) >= dst.getGrid().size(0))    {return;}
        if (key_src.get(1) >= dst.getGrid().size(1))    {return;}

        dst.get_o(key_src) = src.get_o(key_src);
    }
};

template<typename grid_type>
struct copy_ndim_grid_impl<3,grid_type>
{
    static __device__ void copy(grid_type & src, grid_type & dst)
    {
        grid_key_dx<3> key_src;
        key_src.set_d(0,threadIdx.x + blockIdx.x * blockDim.x);
        key_src.set_d(1,threadIdx.y + blockIdx.y * blockDim.y);
        key_src.set_d(2,threadIdx.y + blockIdx.y * blockDim.y);

        if (key_src.get(0) >= src.getGrid().size(0))    {return;}
        if (key_src.get(1) >= src.getGrid().size(1))    {return;}
        if (key_src.get(2) >= src.getGrid().size(2))    {return;}

        if (key_src.get(0) >= dst.getGrid().size(0))    {return;}
        if (key_src.get(1) >= dst.getGrid().size(1))    {return;}
        if (key_src.get(2) >= dst.getGrid().size(2))    {return;}

        dst.get_o(key_src) = src.get_o(key_src);
    }
};

template<unsigned int dim, typename grid_type>
__global__ void copy_ndim_grid_device(grid_type src, grid_type dst)
{
    copy_ndim_grid_impl<dim,grid_type>::copy(src,dst);
}


#endif


template<bool inte_or_lin, typename base_grid, unsigned int dim, typename T>
struct grid_toKernelImpl
{
    template<typename grid_type> static base_grid toKernel(grid_type & gc)
    {
        /*grid_gpu_ker<dim,T,memory_traits_lin,typename grid_type::linearizer_type>*/base_grid g(gc.getGrid());

        g.get_data_().disable_manage_memory();
        g.get_data_().mem = gc.get_internal_data_().mem;
        // Increment the reference of mem
        //g.get_data_().mem->incRef();
        g.get_data_().mem_r.bind_ref(gc.get_internal_data_().mem_r);
        g.get_data_().switchToDevicePtr();

        return g;
    }
};

template<typename base_grid, unsigned int dim, typename T>
struct grid_toKernelImpl<true,base_grid,dim,T>
{
    template<typename grid_type> static base_grid toKernel(grid_type & gc)
    {
        /*grid_gpu_ker<dim,T,memory_traits_inte, typename grid_type::linearizer_type>*/ base_grid g(gc.getGrid());
        copy_switch_memory_c_no_cpy<typename std::remove_reference<decltype(gc.get_internal_data_())>::type,
                                    typename std::remove_reference<decltype(g.get_data_())>::type> cp_mc(gc.get_internal_data_(),g.get_data_());

        boost::mpl::for_each_ref< boost::mpl::range_c<int,0,T::max_prop> >(cp_mc);

        return g;
    }
};

#endif /* CUDA_GRID_GPU_FUNCS_CUH_ */