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// Copyright 2012-2024 The Rust Project Developers. See the COPYRIGHT
// file at the top-level directory of this distribution and at
//
// Licensed under the Apache License, Version 2.0 <LICENSE-APACHE or
// option. This file may not be copied, modified, or distributed
// except according to those terms.
#![feature(test)]
extern crate bit_set;
extern crate bit_vec;
extern crate rand;
extern crate test;
use bit_set::BitSet;
use bit_vec::BitVec;
use rand::{rngs::ThreadRng, thread_rng, RngCore};
use test::{black_box, Bencher};
const BENCH_BITS: usize = 1 << 14;
const BITS: usize = 32;
fn rng() -> ThreadRng {
thread_rng()
}
#[bench]
fn bench_bit_vecset_small(b: &mut Bencher) {
let mut r = rng();
let mut bit_vec = BitSet::new();
b.iter(|| {
for _ in 0..100 {
bit_vec.insert((r.next_u32() as usize) % BITS);
}
black_box(&bit_vec);
});
}
#[bench]
fn bench_bit_vecset_big(b: &mut Bencher) {
let mut r = rng();
let mut bit_vec = BitSet::new();
b.iter(|| {
for _ in 0..100 {
bit_vec.insert((r.next_u32() as usize) % BENCH_BITS);
}
black_box(&bit_vec);
});
}
#[bench]
fn bench_bit_vecset_iter(b: &mut Bencher) {
let bit_vec = BitSet::from_bit_vec(BitVec::from_fn(BENCH_BITS, |idx| idx % 3 == 0));
b.iter(|| {
let mut sum = 0;
for idx in &bit_vec {
sum += idx as usize;
}
sum
})
}