src/test/bench/task-perf-spawnalot.rs

   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.
   4 //
   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.
  10
  11 use std::env;
  12 use std::thread;
  13
  14 fn f(n: usize) {
  15     let mut i = 0;
  16     while i < n {
  17         let _ = thread::spawn(move|| g()).join();
  18         i += 1;
  19     }
  20 }
  21
  22 fn g() { }
  23
  24 fn main() {
  25     let args = env::args();
  26     let args = if env::var_os("RUST_BENCH").is_some() {
  27         vec!("".to_string(), "400".to_string())
  28     } else if args.len() <= 1 {
  29         vec!("".to_string(), "10".to_string())
  30     } else {
  31         args.collect()
  32     };
  33     let n = args[1].parse().unwrap();
  34     let mut i = 0;
  35     while i < n { thread::spawn(move|| f(n) ); i += 1; }
  36 }