Function BitReaderBenchmark

be/src/benchmarks/bit-packing-benchmark.cc:409–422

Benchmark calling BitReader::GetValue() in a loop to unpack 32 * 'batch_size' values.

/// Benchmark calling BitReader::GetValue() in a loop to unpack 32 * 'batch_size' values.
void BitReaderBenchmark(int batch_size, void* data) {
  const BenchmarkParams* p = reinterpret_cast<BenchmarkParams*>(data);
  BitReader reader(p->data, p->data_len);
  for (int i = 0; i < batch_size; ++i) {
    for (int j = 0; j < 32; ++j) {
      const int64_t offset = (i * 32 + j) % NUM_OUT_VALUES;
      if (UNLIKELY(!reader.GetValue<uint32_t>(p->bit_width, &out_buffer[offset]))) {
        reader.Reset(p->data, p->data_len);
        const bool success = reader.GetValue<uint32_t>(p->bit_width, &out_buffer[offset]);
        DCHECK(success);
      }
    }
  }
}

/// Benchmark calling Unpack32Values() in a loop to unpack 32 * 'batch_size' values.
void Unpack32Benchmark(int batch_size, void* data) {