debug.cpp

/*
MIT License

Copyright (c) 2015 University of West Bohemia

Permission is hereby granted, free of charge, to any person obtaining a copy
of this software and associated documentation files (the "Software"), to deal
in the Software without restriction, including without limitation the rights
to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
copies of the Software, and to permit persons to whom the Software is
furnished to do so, subject to the following conditions:

The above copyright notice and this permission notice shall be included in all
copies or substantial portions of the Software.

THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE
SOFTWARE.
*/

#include <iostream>
#include <fstream>

#include <cuda_runtime.h>
#include "debug.h"
#include "cudaerror.h"

#ifdef _MSC_VER
#if _MSC_VER < 1700
	#define uint32_t unsigned int
#else
	#include <cstdint>
#endif
#else //linux
	#include <cstdint>
#endif
void export_c_buffer(const void * data, size_t width, size_t height, size_t elemsize, std::string filename)
{
    std::cout << "[Debug] Exporting C buffer of size " << width << " x " << height << " x " << elemsize << " B to file '" << filename.c_str() << "'\n";
    size_t datasize = width * height * elemsize;

    uint32_t w = (uint32_t) width,
        h = (uint32_t) height,
        e = (uint32_t) elemsize;
    std::ofstream fout(filename.c_str(), std::ios::out | std::ios::binary);
    fout.write((const char *)&w, sizeof(w));
    fout.write((const char *)&h, sizeof(h));
    fout.write((const char *)&e, sizeof(e));
    fout.write((const char *)data, datasize);
    fout.close();
}

void export_cuda_buffer(const void * d_data, size_t width, size_t height, size_t elemsize, std::string filename)
{
    std::cout << "[Debug] Exporting CUDA buffer of size " << width << " x " << height << " x " << elemsize << " B to file '" << filename.c_str() << "'\n";

    size_t datasize = width * height * elemsize;
    char * data = new char [datasize];
    assert_cuda(cudaMemcpy(data, d_data, datasize, cudaMemcpyDeviceToHost));

    uint32_t w = (uint32_t) width,
        h = (uint32_t) height,
        e = (uint32_t) elemsize;
    std::ofstream fout(filename.c_str(), std::ios::out | std::ios::binary);
    fout.write((const char *)&w, sizeof(w));
    fout.write((const char *)&h, sizeof(h));
    fout.write((const char *)&e, sizeof(e));
    fout.write((const char *)data, datasize);
    fout.close();

    delete [] data;
}

void import_cuda_buffer(void * d_data, size_t width, size_t height, size_t elemsize, std::string filename)
{
    std::cout << "[Debug] Importing CUDA buffer of size " << width << " x " << height << " x " << elemsize << " B to file '" << filename.c_str() << "'\n";

    uint32_t w, h, e;
    std::ifstream fin(filename.c_str(), std::ios::in | std::ios::binary);
    fin.read((char *)&w, sizeof(w));
    fin.read((char *)&h, sizeof(h));
    fin.read((char *)&e, sizeof(e));
    if (w == width && h == height && e == elemsize)
    {
        size_t datasize = width * height * elemsize;
        char * data = new char [datasize];
        fin.read(data, datasize);
        assert_cuda(cudaMemcpy(d_data, data, datasize, cudaMemcpyHostToDevice));
        delete [] data;
    }
    else
        std::cerr << "[Error] Cannot import CUDA buffer, dimension mismatch\n";
    fin.close();
}