Function ProjectionOverhead

cpp/src/arrow/acero/project_benchmark.cc:45–55

static constexpr int64_t kTotalBatchSize = 1000000;

static void ProjectionOverhead(benchmark::State& state, Expression expr) {
  const int32_t batch_size = static_cast<int32_t>(state.range(0));
  const int32_t num_batches = kTotalBatchSize / batch_size;

  arrow::acero::BatchesWithSchema data = MakeRandomBatches(
      schema({field("i64", int64()), field("bool", boolean())}), num_batches, batch_size);
  std::vector<arrow::acero::Declaration> project_node_dec = {
      {"project", ProjectNodeOptions{{expr}}}};
  ASSERT_OK(
      BenchmarkNodeOverhead(state, num_batches, batch_size, data, project_node_dec));
}

static void ProjectionOverheadIsolated(benchmark::State& state, Expression expr) {
  const int32_t batch_size = static_cast<int32_t>(state.range(0));