Benchmarking `#[track_caller]`

lib.rs

pub fn untracked(x: bool) {
    if x {
        panic!("Untracked");
    }
}

#[track_caller]
pub fn tracked(x: bool) {
    if x {
        panic!("Tracked");
    }
}

out.sh

$ cargo bench
...
tracked false           time:   [1.5369 ns 1.5376 ns 1.5383 ns]
Found 8 outliers among 100 measurements (8.00%)
  5 (5.00%) high mild
  3 (3.00%) high severe

untracked false         time:   [1.5371 ns 1.5376 ns 1.5382 ns]
Found 5 outliers among 100 measurements (5.00%)
  3 (3.00%) high mild
  2 (2.00%) high severe

track_caller.rs

use criterion::{black_box, criterion_group, criterion_main, Criterion};
use playground::*;

fn bench(c: &mut Criterion) {
    c
        .bench_function("tracked false", |b| b.iter(|| tracked(black_box(false))))
        .bench_function("untracked false", |b| b.iter(|| untracked(black_box(false))));

    // c.bench_function("tracked true", |b| b.iter(|| tracked(black_box(true))))
    // .bench_function("untracked true", |b| b.iter(|| untracked(black_box(true))));
}

criterion_group!(benches, bench);
criterion_main!(benches);