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bench

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This commit is contained in:
The8472 2019-10-19 00:00:45 +02:00
parent 076417e978
commit 038394a330
1 changed files with 40 additions and 1 deletions
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41
library/alloc/benches/vec.rs
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@ -1,5 +1,5 @@
use std::iter::{repeat, FromIterator};
use test::Bencher;
use test::{black_box, Bencher};
#[bench]
fn bench_new(b: &mut Bencher) {
@ -431,3 +431,42 @@ fn bench_clone_from_10_0100_0010(b: &mut Bencher) {
fn bench_clone_from_10_1000_0100(b: &mut Bencher) {
do_bench_clone_from(b, 10, 1000, 100)
}
macro_rules! bench_in_place {
(
$($fname:ident, $type:ty , $count:expr, $init: expr);*
) => {
$(
#[bench]
fn $fname(b: &mut Bencher) {
b.iter(|| {
let src: Vec<$type> = vec![$init; $count];
black_box(src.into_iter()
.enumerate()
.map(|(idx, e)| { (idx as $type) ^ e }).collect::<Vec<$type>>())
});
}
)+
};
}
bench_in_place![
bench_in_place_xxu8_i0_0010, u8, 10, 0;
bench_in_place_xxu8_i0_0100, u8, 100, 0;
bench_in_place_xxu8_i0_1000, u8, 1000, 0;
bench_in_place_xxu8_i1_0010, u8, 10, 1;
bench_in_place_xxu8_i1_0100, u8, 100, 1;
bench_in_place_xxu8_i1_1000, u8, 1000, 1;
bench_in_place_xu32_i0_0010, u32, 10, 0;
bench_in_place_xu32_i0_0100, u32, 100, 0;
bench_in_place_xu32_i0_1000, u32, 1000, 0;
bench_in_place_xu32_i1_0010, u32, 10, 1;
bench_in_place_xu32_i1_0100, u32, 100, 1;
bench_in_place_xu32_i1_1000, u32, 1000, 1;
bench_in_place_u128_i0_0010, u128, 10, 0;
bench_in_place_u128_i0_0100, u128, 100, 0;
bench_in_place_u128_i0_1000, u128, 1000, 0;
bench_in_place_u128_i1_0010, u128, 10, 1;
bench_in_place_u128_i1_0100, u128, 100, 1;
bench_in_place_u128_i1_1000, u128, 1000, 1
];