#[macro_use]
extern crate criterion;
use criterion::Criterion;
use rand::Rng;
extern crate arrow;
use arrow::util::test_util::seedable_rng;
use arrow::{array::*, util::bench_util::create_string_array};
fn create_slices(size: usize) -> Vec<(usize, usize)> {
let rng = &mut seedable_rng();
(0..size)
.map(|_| {
let start = rng.gen_range(0..size / 2);
let end = rng.gen_range(start + 1..size);
(start, end)
})
.collect()
}
fn bench<T: Array>(v1: &T, slices: &[(usize, usize)]) {
let mut mutable = MutableArrayData::new(vec![v1.data_ref()], false, 5);
for (start, end) in slices {
mutable.extend(0, *start, *end)
}
mutable.freeze();
}
fn add_benchmark(c: &mut Criterion) {
let v1 = create_string_array::<i32>(1024, 0.0);
let v2 = create_slices(1024);
c.bench_function("mutable str 1024", |b| b.iter(|| bench(&v1, &v2)));
let v1 = create_string_array::<i32>(1024, 0.5);
let v2 = create_slices(1024);
c.bench_function("mutable str nulls 1024", |b| b.iter(|| bench(&v1, &v2)));
}
criterion_group!(benches, add_benchmark);
criterion_main!(benches);