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authorValentin Popov <valentin@popov.link>2024-01-08 00:21:28 +0300
committerValentin Popov <valentin@popov.link>2024-01-08 00:21:28 +0300
commit1b6a04ca5504955c571d1c97504fb45ea0befee4 (patch)
tree7579f518b23313e8a9748a88ab6173d5e030b227 /vendor/crc32fast/benches/bench.rs
parent5ecd8cf2cba827454317368b68571df0d13d7842 (diff)
downloadfparkan-1b6a04ca5504955c571d1c97504fb45ea0befee4.tar.xz
fparkan-1b6a04ca5504955c571d1c97504fb45ea0befee4.zip
Initial vendor packages
Signed-off-by: Valentin Popov <valentin@popov.link>
Diffstat (limited to 'vendor/crc32fast/benches/bench.rs')
-rw-r--r--vendor/crc32fast/benches/bench.rs53
1 files changed, 53 insertions, 0 deletions
diff --git a/vendor/crc32fast/benches/bench.rs b/vendor/crc32fast/benches/bench.rs
new file mode 100644
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+++ b/vendor/crc32fast/benches/bench.rs
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+#[macro_use]
+extern crate bencher;
+extern crate crc32fast;
+extern crate rand;
+
+use bencher::Bencher;
+use crc32fast::Hasher;
+use rand::Rng;
+
+fn bench(b: &mut Bencher, size: usize, hasher_init: Hasher) {
+ let mut bytes = vec![0u8; size];
+ rand::thread_rng().fill(&mut bytes[..]);
+
+ b.iter(|| {
+ let mut hasher = hasher_init.clone();
+ hasher.update(&bytes);
+ bencher::black_box(hasher.finalize())
+ });
+
+ b.bytes = size as u64;
+}
+
+fn bench_kilobyte_baseline(b: &mut Bencher) {
+ bench(b, 1024, Hasher::internal_new_baseline(0, 0))
+}
+
+fn bench_kilobyte_specialized(b: &mut Bencher) {
+ bench(b, 1024, Hasher::internal_new_specialized(0, 0).unwrap())
+}
+
+fn bench_megabyte_baseline(b: &mut Bencher) {
+ bench(b, 1024 * 1024, Hasher::internal_new_baseline(0, 0))
+}
+
+fn bench_megabyte_specialized(b: &mut Bencher) {
+ bench(
+ b,
+ 1024 * 1024,
+ Hasher::internal_new_specialized(0, 0).unwrap(),
+ )
+}
+
+benchmark_group!(
+ bench_baseline,
+ bench_kilobyte_baseline,
+ bench_megabyte_baseline
+);
+benchmark_group!(
+ bench_specialized,
+ bench_kilobyte_specialized,
+ bench_megabyte_specialized
+);
+benchmark_main!(bench_baseline, bench_specialized);