Homer Simpson
f56a1eea3b
Full project snapshot migrated to new Gitea remote without history: engine, editor, physics, script, examples, tests, docs, and assets. Relicensed from GPLv3 to MIT and updated repo URLs. Co-Authored-By: Claude Opus 4.8 <noreply@anthropic.com>
32 lines
1.2 KiB
Rust
32 lines
1.2 KiB
Rust
//! Benchmark for the Stage 5 schedule/module overhead.
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//!
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//! Stage 5 criterion: module/system scheduling overhead must be negligible
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//! compared to the Stage-4 hardcoded loop. There is no per-frame work here — the
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//! benchmark measures the *frame overhead itself*: advancing timing, walking the
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//! phase lists, and the fixed-timestep accumulator, with a realistic handful of
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//! empty systems registered. Check that `app_empty_update` is in the low
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//! nanoseconds (i.e. lost in the noise next to any real system's work).
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use criterion::{black_box, criterion_group, criterion_main, Criterion};
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use oxide_engine::app::{App, Schedule};
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fn empty_update(c: &mut Criterion) {
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let mut app = App::new();
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// A few no-op systems spread across phases, as a trivial game might have.
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for _ in 0..4 {
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app.add_system(Schedule::Update, |_| {});
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}
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app.add_system(Schedule::FixedUpdate, |_| {});
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app.add_system(Schedule::Render, |_| {});
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c.bench_function("app_empty_update", |bencher| {
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bencher.iter(|| {
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app.update(black_box(1.0 / 60.0));
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black_box(app.time.frame)
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});
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});
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}
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criterion_group!(benches, empty_update);
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criterion_main!(benches);
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