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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.
14 use std
::sync
::mpsc
::{channel, Sender}
;
16 fn start(tx
: &Sender
<Sender
<String
>>) {
17 let (tx2
, rx
) = channel();
18 tx
.send(tx2
).unwrap();
22 a
= rx
.recv().unwrap();
23 assert
!(a
== "A".to_string());
25 b
= rx
.recv().unwrap();
26 assert
!(b
== "B".to_string());
31 let (tx
, rx
) = channel();
32 let child
= thread
::spawn(move|| { start(&tx) }
);
34 let mut c
= rx
.recv().unwrap();
35 c
.send("A".to_string()).unwrap();
36 c
.send("B".to_string()).unwrap();