Method writeCacheFile

src/library/fft_binary_lookup.cpp:487–527

}

cl_int FFTBinaryLookup::writeCacheFile(std::vector<unsigned char*> &data)
{
    if (! this->m_cache_enabled)
    {
        return 0;
    }

    // exclusive open to ensure that only one thread will write the file
    const std::string & filename = this->m_path + this->m_cache_entry_name;

    CacheEntry cache_file(filename);
    bool created = cache_file.exclusive_create();

    // try to exclusively create the cache file on the disk
    if (created)
    {
        // if it was created by the current thread, this one will write into cache file
        cache_file.close();

        const std::string & filename = this->m_path + this->m_cache_entry_name;
        std::ofstream file (filename.c_str(), std::ios_base::binary);

        file.write((char*)&this->m_header, sizeof(m_header));
        file.write((char*)data[0], this->m_header.binary_size);
        file.write((char*)this->m_signature, this->m_header.signature_size);
        file.close();

#if ENABLE_SOURCE_DUMP
        const std::string & srcFilename = this->m_path + this->m_cache_entry_name + ".cl";
        std::ofstream srcFile (srcFilename.c_str());
        srcFile << this->m_source;

        srcFile.close();
#endif

        return CL_SUCCESS;
    }

    // other thread do not write the cache file
    return 1;
}

cl_int FFTBinaryLookup::populateCache()
{