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Add VecDeque::extend TrustedLen benchmark

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This commit is contained in:
Paolo Barbolini 2022-06-11 22:53:46 +02:00
parent 0cb9899e78
commit ac2c21a623
1 changed files with 32 additions and 0 deletions
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32
library/alloc/benches/vec_deque.rs
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@ -91,3 +91,35 @@ fn bench_extend_vec(b: &mut Bencher) {
ring.extend(black_box(input));
});
}
#[bench]
fn bench_extend_trustedlen(b: &mut Bencher) {
let mut ring: VecDeque<u16> = VecDeque::with_capacity(1000);
b.iter(|| {
ring.clear();
ring.extend(black_box(0..512));
});
}
#[bench]
fn bench_extend_chained_trustedlen(b: &mut Bencher) {
let mut ring: VecDeque<u16> = VecDeque::with_capacity(1000);
b.iter(|| {
ring.clear();
ring.extend(black_box((0..256).chain(768..1024)));
});
}
#[bench]
fn bench_extend_chained_bytes(b: &mut Bencher) {
let mut ring: VecDeque<u16> = VecDeque::with_capacity(1000);
let input1: &[u16] = &[128; 256];
let input2: &[u16] = &[255; 256];
b.iter(|| {
ring.clear();
ring.extend(black_box(input1.iter().chain(input2.iter())));
});
}