45 lines
1.2 KiB
Rust
45 lines
1.2 KiB
Rust
// Copyright 2012-2014 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.
|
|
|
|
#![feature(std_misc)]
|
|
|
|
use std::sync::mpsc::{channel, Sender};
|
|
use std::thread;
|
|
|
|
pub fn main() {
|
|
let (tx, rx) = channel();
|
|
|
|
// Spawn 10 tasks each sending us back one isize.
|
|
let mut i = 10;
|
|
while (i > 0) {
|
|
println!("{}", i);
|
|
let tx = tx.clone();
|
|
thread::spawn({let i = i; move|| { child(i, &tx) }});
|
|
i = i - 1;
|
|
}
|
|
|
|
// Spawned tasks are likely killed before they get a chance to send
|
|
// anything back, so we deadlock here.
|
|
|
|
i = 10;
|
|
while (i > 0) {
|
|
println!("{}", i);
|
|
rx.recv().unwrap();
|
|
i = i - 1;
|
|
}
|
|
|
|
println!("main thread exiting");
|
|
}
|
|
|
|
fn child(x: isize, tx: &Sender<isize>) {
|
|
println!("{}", x);
|
|
tx.send(x).unwrap();
|
|
}
|