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authorDaniel Baumann <daniel.baumann@progress-linux.org>2024-05-30 03:59:35 +0000
committerDaniel Baumann <daniel.baumann@progress-linux.org>2024-05-30 03:59:35 +0000
commitd1b2d29528b7794b41e66fc2136e395a02f8529b (patch)
treea4a17504b260206dec3cf55b2dca82929a348ac2 /vendor/fastrand-1.9.0/benches
parentReleasing progress-linux version 1.72.1+dfsg1-1~progress7.99u1. (diff)
downloadrustc-d1b2d29528b7794b41e66fc2136e395a02f8529b.tar.xz
rustc-d1b2d29528b7794b41e66fc2136e395a02f8529b.zip
Merging upstream version 1.73.0+dfsg1.
Signed-off-by: Daniel Baumann <daniel.baumann@progress-linux.org>
Diffstat (limited to 'vendor/fastrand-1.9.0/benches')
-rw-r--r--vendor/fastrand-1.9.0/benches/bench.rs98
1 files changed, 98 insertions, 0 deletions
diff --git a/vendor/fastrand-1.9.0/benches/bench.rs b/vendor/fastrand-1.9.0/benches/bench.rs
new file mode 100644
index 000000000..4b882b74f
--- /dev/null
+++ b/vendor/fastrand-1.9.0/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
+ })
+}