Function BenchmarkBufferOutputStream

cpp/src/arrow/io/memory_benchmark.cc:317–332

    ->UseRealTime();

static void BenchmarkBufferOutputStream(
    const std::string& datum,
    benchmark::State& state) {  // NOLINT non-const reference
  const void* raw_data = datum.data();
  int64_t raw_nbytes = static_cast<int64_t>(datum.size());
  // Write approx. 32 MB to each BufferOutputStream
  int64_t num_raw_values = (1 << 25) / raw_nbytes;
  for (auto _ : state) {
    auto stream = *io::BufferOutputStream::Create(1024);
    for (int64_t i = 0; i < num_raw_values; ++i) {
      ABORT_NOT_OK(stream->Write(raw_data, raw_nbytes));
    }
    ABORT_NOT_OK(stream->Finish());
  }
  state.SetBytesProcessed(int64_t(state.iterations()) * num_raw_values * raw_nbytes);
}

static void BufferOutputStreamTinyWrites(
    benchmark::State& state) {  // NOLINT non-const reference