| // 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. |
| |
| |
| #![allow(unknown_features)] |
| #![feature(box_syntax)] |
| |
| use std::sync::mpsc::{channel, Sender}; |
| use std::thread; |
| |
| fn child(tx: &Sender<Box<usize>>, i: usize) { |
| tx.send(box i).unwrap(); |
| } |
| |
| pub fn main() { |
| let (tx, rx) = channel(); |
| let n = 100; |
| let mut expected = 0; |
| let ts = (0..n).map(|i| { |
| expected += i; |
| let tx = tx.clone(); |
| thread::spawn(move|| { |
| child(&tx, i) |
| }) |
| }).collect::<Vec<_>>(); |
| |
| let mut actual = 0; |
| for _ in 0..n { |
| let j = rx.recv().unwrap(); |
| actual += *j; |
| } |
| |
| assert_eq!(expected, actual); |
| |
| for t in ts { t.join(); } |
| } |