コード例 #1
0
ファイル: io.hpp プロジェクト: raymond0/osrm-backend
inline bool serializeFlags(const boost::filesystem::path &path, const std::vector<bool> &flags)
{
    // TODO this should be replaced with a FILE-based write using error checking
    std::ofstream flag_stream(path.string(), std::ios::binary);

    writeFingerprint(flag_stream);

    std::uint32_t number_of_bits = flags.size();
    flag_stream.write(reinterpret_cast<const char *>(&number_of_bits), sizeof(number_of_bits));
    // putting bits in ints
    std::uint32_t chunk = 0;
    std::size_t chunk_count = 0;
    for (std::size_t bit_nr = 0; bit_nr < number_of_bits;)
    {
        std::bitset<32> chunk_bitset;
        for (std::size_t chunk_bit = 0; chunk_bit < 32 && bit_nr < number_of_bits;
             ++chunk_bit, ++bit_nr)
            chunk_bitset[chunk_bit] = flags[bit_nr];

        chunk = chunk_bitset.to_ulong();
        ++chunk_count;
        flag_stream.write(reinterpret_cast<const char *>(&chunk), sizeof(chunk));
    }
    Log() << "Wrote " << number_of_bits << " bits in " << chunk_count << " chunks (Flags).";
    return static_cast<bool>(flag_stream);
}
コード例 #2
0
ファイル: io.hpp プロジェクト: raymond0/osrm-backend
bool serializeVector(const std::string &filename, const std::vector<simple_type> &data)
{
    std::ofstream stream(filename, std::ios::binary);

    writeFingerprint(stream);

    return serializeVector(stream, data);
}
コード例 #3
0
ファイル: io.hpp プロジェクト: 7ute/osrm-backend
bool serializeVector(const std::string &filename, const std::vector<simple_type> &data)
{
    std::ofstream stream(filename, std::ios::binary);

    writeFingerprint(stream);

    std::uint64_t count = data.size();
    stream.write(reinterpret_cast<const char *>(&count), sizeof(count));
    if (!data.empty())
        stream.write(reinterpret_cast<const char *>(&data[0]), sizeof(simple_type) * count);
    return static_cast<bool>(stream);
}