| // 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::thread; |
| use std::sync::mpsc::{channel, Sender}; |
| |
| fn start(tx: &Sender<Sender<String>>) { |
| let (tx2, rx) = channel(); |
| tx.send(tx2).unwrap(); |
| |
| let mut a; |
| let mut b; |
| a = rx.recv().unwrap(); |
| assert_eq!(a, "A".to_string()); |
| println!("{}", a); |
| b = rx.recv().unwrap(); |
| assert_eq!(b, "B".to_string()); |
| println!("{}", b); |
| } |
| |
| pub fn main() { |
| let (tx, rx) = channel(); |
| let child = thread::spawn(move|| { start(&tx) }); |
| |
| let mut c = rx.recv().unwrap(); |
| c.send("A".to_string()).unwrap(); |
| c.send("B".to_string()).unwrap(); |
| thread::yield_now(); |
| |
| child.join(); |
| } |