Benches in src for lib

[radevgit]

All the given code examples assume the benches are created in /examples/...
Is it possible to have benches in /src/something.rs for a library project?
I tried to use #[divan::bench] the same way I use the #[test], in every module and used the
[dependencies]
divan = "0.1.0"
in Cargo.toml, however the "cargo bench" does not produce any results (only run tests).
Maybe we need some examples how to do it in that case.

[nvzqz]

Divan is able to benchmark internals of a library. As of 558176a, Divan now benchmarks some of its own internals in CI:

• Linux
• macOS
• Windows

divan/src/time/timer.rs

Lines 176 to 196 in 558176a

	#[cfg(feature = "internal_benches")]
	#[crate::bench(crate = crate)]
	fn get_tsc() -> Result<Timer, TscUnavailable> {
	Timer::get_tsc()
	}
	#[cfg(feature = "internal_benches")]
	mod measure {
	use super::*;
	#[crate::bench(crate = crate)]
	fn precision() -> FineDuration {
	Timer::Os.measure_precision()
	}
	#[cfg(feature = "internal_benches")]
	#[crate::bench(crate = crate)]
	fn sample_loop_overhead() -> FineDuration {
	Timer::Os.measure_sample_loop_overhead()
	}
	}

Note

Your code should not do crate = crate since this only applies to Divan.

Feel free to use 558176a as a guide for benchmarking your own library's internals. That said, this solution is rather clunky and I wish we had something better.

[nvzqz]

cc @realFlowControl @AliciaBytes @CyriacBr @HadrienG2 @IndigoLily