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author | Daniel Baumann <daniel.baumann@progress-linux.org> | 2024-04-07 19:33:14 +0000 |
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committer | Daniel Baumann <daniel.baumann@progress-linux.org> | 2024-04-07 19:33:14 +0000 |
commit | 36d22d82aa202bb199967e9512281e9a53db42c9 (patch) | |
tree | 105e8c98ddea1c1e4784a60a5a6410fa416be2de /third_party/rust/fastrand/benches | |
parent | Initial commit. (diff) | |
download | firefox-esr-36d22d82aa202bb199967e9512281e9a53db42c9.tar.xz firefox-esr-36d22d82aa202bb199967e9512281e9a53db42c9.zip |
Adding upstream version 115.7.0esr.upstream/115.7.0esrupstream
Signed-off-by: Daniel Baumann <daniel.baumann@progress-linux.org>
Diffstat (limited to 'third_party/rust/fastrand/benches')
-rw-r--r-- | third_party/rust/fastrand/benches/bench.rs | 98 |
1 files changed, 98 insertions, 0 deletions
diff --git a/third_party/rust/fastrand/benches/bench.rs b/third_party/rust/fastrand/benches/bench.rs new file mode 100644 index 0000000000..4b882b74f9 --- /dev/null +++ b/third_party/rust/fastrand/benches/bench.rs @@ -0,0 +1,98 @@ +#![feature(test)] + +extern crate test; + +use rand::prelude::*; +use test::Bencher; +use wyhash::WyRng; + +#[bench] +fn shuffle_wyhash(b: &mut Bencher) { + let mut rng = WyRng::from_rng(thread_rng()).unwrap(); + let mut x = (0..100).collect::<Vec<usize>>(); + b.iter(|| { + x.shuffle(&mut rng); + x[0] + }) +} + +#[bench] +fn shuffle_fastrand(b: &mut Bencher) { + let rng = fastrand::Rng::new(); + let mut x = (0..100).collect::<Vec<usize>>(); + b.iter(|| { + rng.shuffle(&mut x); + x[0] + }) +} + +#[bench] +fn u8_wyhash(b: &mut Bencher) { + let mut rng = WyRng::from_rng(thread_rng()).unwrap(); + b.iter(|| { + let mut sum = 0u8; + for _ in 0..10_000 { + sum = sum.wrapping_add(rng.gen::<u8>()); + } + sum + }) +} + +#[bench] +fn u8_fastrand(b: &mut Bencher) { + let rng = fastrand::Rng::new(); + b.iter(|| { + let mut sum = 0u8; + for _ in 0..10_000 { + sum = sum.wrapping_add(rng.u8(..)); + } + sum + }) +} + +#[bench] +fn u32_wyhash(b: &mut Bencher) { + let mut rng = WyRng::from_rng(thread_rng()).unwrap(); + b.iter(|| { + let mut sum = 0u32; + for _ in 0..10_000 { + sum = sum.wrapping_add(rng.gen::<u32>()); + } + sum + }) +} + +#[bench] +fn u32_fastrand(b: &mut Bencher) { + let rng = fastrand::Rng::new(); + b.iter(|| { + let mut sum = 0u32; + for _ in 0..10_000 { + sum = sum.wrapping_add(rng.u32(..)); + } + sum + }) +} + +#[bench] +fn fill(b: &mut Bencher) { + let rng = fastrand::Rng::new(); + b.iter(|| { + // Pick a size that isn't divisble by 8. + let mut bytes = [0u8; 367]; + rng.fill(&mut bytes); + bytes + }) +} + +#[bench] +fn fill_naive(b: &mut Bencher) { + let rng = fastrand::Rng::new(); + b.iter(|| { + let mut bytes = [0u8; 367]; + for item in &mut bytes { + *item = rng.u8(..); + } + bytes + }) +} |