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;
28 ($argv:expr, $id:ident) => (maybe_run_test($argv, stringify!($id).to_owned(), $id))
32 let argv = os::args();
33 let _tests = argv.slice(1, argv.len());
35 bench!(argv, shift_push);
36 bench!(argv, read_line);
37 bench!(argv, vec_plus);
38 bench!(argv, vec_append);
39 bench!(argv, vec_push_all);
40 bench!(argv, is_utf8_ascii);
41 bench!(argv, is_utf8_multibyte);
44 fn maybe_run_test(argv: &[~str], name: ~str, test: ||) {
45 let mut run_test = false;
47 if os::getenv("RUST_BENCH").is_some() {
49 } else if argv.len() > 0 {
50 run_test = argv.iter().any(|x| x == &~"all") || argv.iter().any(|x| x == &name)
57 let start = precise_time_s();
59 let stop = precise_time_s();
61 println!("{}:\t\t{} ms", name, (stop - start) * 1000.0);
65 let mut v1 = Vec::from_elem(30000, 1);
66 let mut v2 = Vec::new();
69 v2.push(v1.shift().unwrap());
74 use std::io::BufferedReader;
76 let mut path = Path::new(env!("CFG_SRC_DIR"));
77 path.push("src/test/bench/shootout-k-nucleotide.data");
79 for _ in range(0, 3) {
80 let mut reader = BufferedReader::new(File::open(&path).unwrap());
81 for _line in reader.lines() {
87 let mut r = rand::task_rng();
89 let mut v = Vec::new();
92 let rv = slice::from_elem(r.gen_range(0u, i + 1), i);
103 let mut r = rand::task_rng();
105 let mut v = Vec::new();
108 let rv = slice::from_elem(r.gen_range(0u, i + 1), i);
110 v = vec::append(v, rv);
113 v = vec::append(rv, v);
120 let mut r = rand::task_rng();
122 let mut v = Vec::new();
123 for i in range(0u, 1500) {
124 let mut rv = slice::from_elem(r.gen_range(0u, i + 1), i);
129 swap(&mut v, &mut rv);
136 let mut v : Vec<u8> = Vec::new();
137 for _ in range(0u, 20000) {
139 if !str::is_utf8(v) {
140 fail!("is_utf8 failed");
145 fn is_utf8_multibyte() {
147 let mut v : Vec<u8> = Vec::new();
148 for _ in range(0u, 5000) {
149 v.push_all(s.as_bytes());
150 if !str::is_utf8(v) {
151 fail!("is_utf8 failed");