tame/tamer/benches/iter.rs

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// Comparisons between Rust built-ins and memchr.
//
// Copyright (C) 2014-2021 Ryan Specialty Group, LLC.
//
// This file is part of TAME.
//
// This program is free software: you can redistribute it and/or modify
// it under the terms of the GNU General Public License as published by
// the Free Software Foundation, either version 3 of the License, or
// (at your option) any later version.
//
// This program is distributed in the hope that it will be useful,
// but WITHOUT ANY WARRANTY; without even the implied warranty of
// MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
// GNU General Public License for more details.
//
// You should have received a copy of the GNU General Public License
// along with this program. If not, see <http://www.gnu.org/licenses/>.
#![feature(test)]
extern crate tamer;
extern crate test;
use tamer::iter::into_iter_while_ok;
use test::Bencher;
mod trip {
use super::*;
#[bench]
fn baseline_map_while(bench: &mut Bencher) {
let mut data = (0..100).map(Ok).collect::<Vec<_>>();
data.push(Err("trip"));
bench.iter(|| {
data.clone()
.into_iter()
.map_while(Result::ok)
.for_each(drop);
});
}
// Note that these aren't comparable feature-wise, since the above
// doesn't give us access to the underlying iterator. This is just to
// ensure that performance is at least pretty close, despite it doing a
// little more work. (And it is.)
#[bench]
fn trip_iter(bench: &mut Bencher) {
let mut data = (0..100).map(Ok).collect::<Vec<_>>();
data.push(Err("trip"));
bench.iter(|| {
into_iter_while_ok(data.clone(), |iter| {
iter.for_each(drop);
})
});
}
}