1 // Copyright 2012-2014 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 use std::thread::Thread;
12 use std::sync::mpsc::{channel, Sender};
14 fn start(tx: &Sender<Sender<String>>) {
15 let (tx2, rx) = channel();
16 tx.send(tx2).unwrap();
20 a = rx.recv().unwrap();
21 assert!(a == "A".to_string());
23 b = rx.recv().unwrap();
24 assert!(b == "B".to_string());
29 let (tx, rx) = channel();
30 let _child = Thread::spawn(move|| { start(&tx) });
32 let mut c = rx.recv().unwrap();
33 c.send("A".to_string()).unwrap();
34 c.send("B".to_string()).unwrap();