fffl 1.2.0

A contiguous First-fit Freelist
Documentation 
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use std::{array, hint::black_box, time::Duration};

use criterion::{criterion_group, criterion_main, BatchSize, Criterion};


use fffl::Freelist;


pub fn benchmark(c: &mut Criterion) {
    let freelist: Freelist<usize> = Freelist::from(vec![0, 1, 2, 3, 4, 5, 6, 7, 8, 9]);
    

    c.bench_function("push", |b| {
        b.iter_batched_ref(
            || { let mut fl = freelist.clone(); fl.reserve(1); fl },
            |fl| { black_box(fl.push(black_box(10))) }, 
            BatchSize::SmallInput
        );
    });

    c.bench_function("remove", |b| {
        b.iter_batched_ref(
            || black_box(freelist.clone()),
            |fl| { black_box(fl.remove(black_box(0))) }, 
            BatchSize::SmallInput
        );
    });

    c.bench_function("remove then push", |b| {
        b.iter_batched_ref(
            || { let mut fl = freelist.clone(); fl.remove(1); fl }, 
            |fl| { black_box(fl.push(black_box(10))) }, 
            BatchSize::SmallInput
        );
    });

    c.bench_function("compactify", |b| {
        b.iter_batched_ref(
            || { 
                let mut fl = freelist.clone(); 
                fl.remove(1);
                fl.remove(3);
                fl.remove(4);
                fl.remove(5);
                fl.remove(8);
                fl
            }, 
            |fl| { black_box({ fl.compactify(); }) }, 
            BatchSize::SmallInput
        );
    });

    let fl = {
        let mut fl = Freelist::from(array::from_fn::<i32, 16, _>(|idx| idx as i32));
        for idx in [2usize, 4, 5, 10, 11, 12, 13] { fl.remove(idx); }
        fl
    };
    c.bench_function("iter", |b| {
        b.iter_batched_ref(
            || fl.iter(),
            |fl| black_box(for _v in fl { }),
            BatchSize::SmallInput
        );
    });


    c.bench_function("into_iter", |b| {
        b.iter_batched_ref(
            || fl.clone().into_iter(),
            |fl| black_box(for _v in fl { }),
            BatchSize::SmallInput
        );
    });

}


criterion_group!{
    name = benches;
    config = Criterion::default()
        .sample_size(2000)
        .warm_up_time(Duration::from_secs(3))
        .measurement_time(Duration::from_secs(8));
    targets = benchmark
}
criterion_main!(benches);