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author | Daniel Baumann <daniel.baumann@progress-linux.org> | 2024-04-17 12:06:31 +0000 |
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committer | Daniel Baumann <daniel.baumann@progress-linux.org> | 2024-04-17 12:06:31 +0000 |
commit | 2ff14448863ac1a1dd9533461708e29aae170c2d (patch) | |
tree | 85b9fea2bbfe3f06473cfa381eed11f273b57c5c /vendor/tracing/benches/empty_span.rs | |
parent | Adding debian version 1.64.0+dfsg1-1. (diff) | |
download | rustc-2ff14448863ac1a1dd9533461708e29aae170c2d.tar.xz rustc-2ff14448863ac1a1dd9533461708e29aae170c2d.zip |
Adding debian version 1.65.0+dfsg1-2.debian/1.65.0+dfsg1-2
Signed-off-by: Daniel Baumann <daniel.baumann@progress-linux.org>
Diffstat (limited to 'vendor/tracing/benches/empty_span.rs')
-rw-r--r-- | vendor/tracing/benches/empty_span.rs | 43 |
1 files changed, 43 insertions, 0 deletions
diff --git a/vendor/tracing/benches/empty_span.rs b/vendor/tracing/benches/empty_span.rs new file mode 100644 index 000000000..fb38b08e1 --- /dev/null +++ b/vendor/tracing/benches/empty_span.rs @@ -0,0 +1,43 @@ +use criterion::{black_box, criterion_group, criterion_main, Criterion}; + +mod shared; + +fn bench(c: &mut Criterion) { + let mut group = c.benchmark_group("empty_span"); + shared::for_all_dispatches(&mut group, |b| { + b.iter(|| { + let span = tracing::span::Span::none(); + black_box(&span); + }) + }); + group.bench_function("baseline_struct", |b| { + b.iter(|| { + let span = FakeEmptySpan::new(); + black_box(&span); + }) + }); +} + +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); + } +} + +criterion_group!(benches, bench); +criterion_main!(benches); |