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author | Daniel Baumann <daniel.baumann@progress-linux.org> | 2024-04-17 12:02:58 +0000 |
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committer | Daniel Baumann <daniel.baumann@progress-linux.org> | 2024-04-17 12:02:58 +0000 |
commit | 698f8c2f01ea549d77d7dc3338a12e04c11057b9 (patch) | |
tree | 173a775858bd501c378080a10dca74132f05bc50 /vendor/tracing/benches/no_subscriber.rs | |
parent | Initial commit. (diff) | |
download | rustc-698f8c2f01ea549d77d7dc3338a12e04c11057b9.tar.xz rustc-698f8c2f01ea549d77d7dc3338a12e04c11057b9.zip |
Adding upstream version 1.64.0+dfsg1.upstream/1.64.0+dfsg1
Signed-off-by: Daniel Baumann <daniel.baumann@progress-linux.org>
Diffstat (limited to 'vendor/tracing/benches/no_subscriber.rs')
-rw-r--r-- | vendor/tracing/benches/no_subscriber.rs | 101 |
1 files changed, 101 insertions, 0 deletions
diff --git a/vendor/tracing/benches/no_subscriber.rs b/vendor/tracing/benches/no_subscriber.rs new file mode 100644 index 000000000..e0f82b56a --- /dev/null +++ b/vendor/tracing/benches/no_subscriber.rs @@ -0,0 +1,101 @@ +use criterion::{black_box, criterion_group, criterion_main, Criterion}; +use tracing::Level; + +struct FakeEmptySpan { + inner: Option<(usize, std::sync::Arc<()>)>, + meta: Option<&'static ()>, +} + +impl FakeEmptySpan { + fn new() -> Self { + Self { + inner: None, + meta: None, + } + } +} + +impl Drop for FakeEmptySpan { + fn drop(&mut self) { + black_box(&self.inner); + black_box(&self.meta); + } +} + +fn bench_no_subscriber(c: &mut Criterion) { + use std::sync::atomic::{AtomicUsize, Ordering}; + + let mut group = c.benchmark_group("no_subscriber"); + + group.bench_function("span", |b| { + b.iter(|| { + let span = tracing::span!(Level::TRACE, "span"); + black_box(&span); + }) + }); + group.bench_function("span_enter", |b| { + b.iter(|| { + let span = tracing::span!(Level::TRACE, "span"); + let _e = span.enter(); + }) + }); + group.bench_function("empty_span", |b| { + b.iter(|| { + let span = tracing::span::Span::none(); + black_box(&span); + }); + }); + group.bench_function("empty_struct", |b| { + b.iter(|| { + let span = FakeEmptySpan::new(); + black_box(&span); + }) + }); + group.bench_function("event", |b| { + b.iter(|| { + tracing::event!(Level::TRACE, "hello"); + }) + }); + group.bench_function("relaxed_load", |b| { + let foo = AtomicUsize::new(1); + b.iter(|| black_box(foo.load(Ordering::Relaxed))); + }); + group.bench_function("acquire_load", |b| { + let foo = AtomicUsize::new(1); + b.iter(|| black_box(foo.load(Ordering::Acquire))) + }); + group.bench_function("log", |b| { + b.iter(|| { + log::log!(log::Level::Info, "log"); + }) + }); + group.finish(); +} + +fn bench_fields(c: &mut Criterion) { + let mut group = c.benchmark_group("no_subscriber_field"); + group.bench_function("span", |b| { + b.iter(|| { + black_box(tracing::span!( + Level::TRACE, + "span", + foo = tracing::field::display(format!("bar {:?}", 2)) + )); + }) + }); + group.bench_function("event", |b| { + b.iter(|| { + tracing::event!( + Level::TRACE, + foo = tracing::field::display(format!("bar {:?}", 2)) + ); + }) + }); + group.bench_function("log", |b| { + b.iter(|| log::log!(log::Level::Trace, "{}", format!("bar {:?}", 2))) + }); + group.finish(); +} + +criterion_group!(benches, bench_no_subscriber, bench_fields); +criterion_main!(benches); |