1 // Copyright 2012 The Rust Project Developers. See the COPYRIGHT
2 // file at the top-level directory of this distribution and at
3 // http://rust-lang.org/COPYRIGHT.
5 // Licensed under the Apache License, Version 2.0 <LICENSE-APACHE or
6 // http://www.apache.org/licenses/LICENSE-2.0> or the MIT license
7 // <LICENSE-MIT or http://opensource.org/licenses/MIT>, at your
8 // option. This file may not be copied, modified, or distributed
9 // except according to those terms.
11 // Microbenchmarks for various functions in std and extra
13 #![feature(macro_rules)]
18 use time::precise_time_s;
27 ($argv:expr, $id:ident) => (maybe_run_test($argv, stringify!($id).to_owned(), $id))
31 let argv = os::args();
32 let _tests = argv.slice(1, argv.len());
34 bench!(argv, shift_push);
35 bench!(argv, read_line);
36 bench!(argv, vec_plus);
37 bench!(argv, vec_append);
38 bench!(argv, vec_push_all);
39 bench!(argv, is_utf8_ascii);
40 bench!(argv, is_utf8_multibyte);
43 fn maybe_run_test(argv: &[~str], name: ~str, test: ||) {
44 let mut run_test = false;
46 if os::getenv("RUST_BENCH").is_some() {
48 } else if argv.len() > 0 {
49 run_test = argv.iter().any(|x| x == &~"all") || argv.iter().any(|x| x == &name)
56 let start = precise_time_s();
58 let stop = precise_time_s();
60 println!("{}:\t\t{} ms", name, (stop - start) * 1000.0);
64 let mut v1 = Vec::from_elem(30000, 1);
65 let mut v2 = Vec::new();
68 v2.push(v1.shift().unwrap());
73 use std::io::BufferedReader;
75 let mut path = Path::new(env!("CFG_SRC_DIR"));
76 path.push("src/test/bench/shootout-k-nucleotide.data");
78 for _ in range(0, 3) {
79 let mut reader = BufferedReader::new(File::open(&path).unwrap());
80 for _line in reader.lines() {
86 let mut r = rand::task_rng();
88 let mut v = Vec::new();
91 let rv = Vec::from_elem(r.gen_range(0u, i + 1), i);
95 v = rv.clone().append(v.as_slice());
102 let mut r = rand::task_rng();
104 let mut v = Vec::new();
107 let rv = Vec::from_elem(r.gen_range(0u, i + 1), i);
109 v = v.clone().append(rv.as_slice());
112 v = rv.clone().append(v.as_slice());
119 let mut r = rand::task_rng();
121 let mut v = Vec::new();
122 for i in range(0u, 1500) {
123 let mut rv = Vec::from_elem(r.gen_range(0u, i + 1), i);
125 v.push_all(rv.as_slice());
128 swap(&mut v, &mut rv);
129 v.push_all(rv.as_slice());
135 let mut v : Vec<u8> = Vec::new();
136 for _ in range(0u, 20000) {
138 if !str::is_utf8(v.as_slice()) {
139 fail!("is_utf8 failed");
144 fn is_utf8_multibyte() {
146 let mut v : Vec<u8> = Vec::new();
147 for _ in range(0u, 5000) {
148 v.push_all(s.as_bytes());
149 if !str::is_utf8(v.as_slice()) {
150 fail!("is_utf8 failed");