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// Copyright 2012 The Rust Project Developers. See the COPYRIGHT
// file at the top-level directory of this distribution and at
// http://rust-lang.org/COPYRIGHT.
//
// Licensed under the Apache License, Version 2.0 <LICENSE-APACHE or
// http://www.apache.org/licenses/LICENSE-2.0> or the MIT license
// <LICENSE-MIT or http://opensource.org/licenses/MIT>, at your
// option. This file may not be copied, modified, or distributed
// except according to those terms.
// Microbenchmark for the smallintmap library
#![feature(vecmap, duration, duration_span)]
use std::collections::VecMap;
use std::env;
use std::time::Duration;
fn append_sequential(min: usize, max: usize, map: &mut VecMap<usize>) {
for i in min..max {
map.insert(i, i + 22);
}
}
fn check_sequential(min: usize, max: usize, map: &VecMap<usize>) {
for i in min..max {
assert_eq!(map[i], i + 22);
}
}
fn main() {
let args = env::args();
let args = if env::var_os("RUST_BENCH").is_some() {
vec!("".to_string(), "100000".to_string(), "100".to_string())
} else if args.len() <= 1 {
vec!("".to_string(), "10000".to_string(), "50".to_string())
} else {
args.collect()
};
let max = args[1].parse::<usize>().unwrap();
let rep = args[2].parse::<usize>().unwrap();
let mut checkf = Duration::new(0, 0);
let mut appendf = Duration::new(0, 0);
for _ in 0..rep {
let mut map = VecMap::new();
let d1 = Duration::span(|| append_sequential(0, max, &mut map));
let d2 = Duration::span(|| check_sequential(0, max, &map));
checkf = checkf + d2;
appendf = appendf + d1;
}
let maxf = max as f64;
println!("insert(): {:?} seconds\n", checkf);
println!(" : {} op/s\n", maxf / checkf.as_secs() as f64);
println!("get() : {:?} seconds\n", appendf);
println!(" : {} op/s\n", maxf / appendf.as_secs() as f64);
}
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