arrow/benches/regexp_kernels.rs

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// to you under the Apache License, Version 2.0 (the
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//
//   http://www.apache.org/licenses/LICENSE-2.0
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// under the License.

#[macro_use]
extern crate criterion;
use criterion::Criterion;

extern crate arrow;

use arrow::array::*;
use arrow::compute::kernels::regexp::*;
use arrow::util::bench_util::*;

fn bench_regexp(arr: &GenericStringArray<i32>, regex_array: &dyn Datum) {
    regexp_match(criterion::black_box(arr), regex_array, None).unwrap();
}

fn add_benchmark(c: &mut Criterion) {
    let size = 65536;
    let val_len = 1000;

    let arr_string = create_string_array_with_len::<i32>(size, 0.0, val_len);
    let pattern_values = vec![r".*-(\d*)-.*"; size];
    let pattern = GenericStringArray::<i32>::from(pattern_values);

    c.bench_function("regexp", |b| b.iter(|| bench_regexp(&arr_string, &pattern)));

    let pattern_values = vec![r".*-(\d*)-.*"];
    let pattern = Scalar::new(GenericStringArray::<i32>::from(pattern_values));

    c.bench_function("regexp scalar", |b| {
        b.iter(|| bench_regexp(&arr_string, &pattern))
    });
}

criterion_group!(benches, add_benchmark);
criterion_main!(benches);