1 // Copyright 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 #![allow(unknown_features)]
12 #![feature(box_syntax)]
14 use std::thread::Thread;
15 use std::sync::mpsc::{channel, Sender};
17 #[derive(PartialEq, Show)]
24 sender: Sender<Message>
27 impl Drop for SendOnDrop {
29 self.sender.send(Message::Dropped).unwrap();
34 SimpleVariant(Sender<Message>),
35 NestedVariant(Box<uint>, SendOnDrop, Sender<Message>),
36 FailingVariant { on_drop: SendOnDrop }
42 &Foo::SimpleVariant(ref mut sender) => {
43 sender.send(Message::DestructorRan).unwrap();
45 &Foo::NestedVariant(_, _, ref mut sender) => {
46 sender.send(Message::DestructorRan).unwrap();
48 &Foo::FailingVariant { .. } => {
56 let (sender, receiver) = channel();
58 let v = Foo::SimpleVariant(sender);
60 assert_eq!(receiver.recv().unwrap(), Message::DestructorRan);
61 assert_eq!(receiver.recv().ok(), None);
63 let (sender, receiver) = channel();
65 let v = Foo::NestedVariant(box 42u, SendOnDrop { sender: sender.clone() }, sender);
67 assert_eq!(receiver.recv().unwrap(), Message::DestructorRan);
68 assert_eq!(receiver.recv().unwrap(), Message::Dropped);
69 assert_eq!(receiver.recv().ok(), None);
71 let (sender, receiver) = channel();
72 let _t = Thread::spawn(move|| {
73 let v = Foo::FailingVariant { on_drop: SendOnDrop { sender: sender } };
75 assert_eq!(receiver.recv().unwrap(), Message::Dropped);
76 assert_eq!(receiver.recv().ok(), None);
78 let (sender, receiver) = channel();
80 Thread::spawn(move|| {
81 let mut v = Foo::NestedVariant(box 42u, SendOnDrop {
82 sender: sender.clone()
84 v = Foo::NestedVariant(box 42u, SendOnDrop { sender: sender.clone() }, sender.clone());
85 v = Foo::SimpleVariant(sender.clone());
86 v = Foo::FailingVariant { on_drop: SendOnDrop { sender: sender } };
89 assert_eq!(receiver.recv().unwrap(), Message::DestructorRan);
90 assert_eq!(receiver.recv().unwrap(), Message::Dropped);
91 assert_eq!(receiver.recv().unwrap(), Message::DestructorRan);
92 assert_eq!(receiver.recv().unwrap(), Message::Dropped);
93 assert_eq!(receiver.recv().unwrap(), Message::DestructorRan);
94 assert_eq!(receiver.recv().unwrap(), Message::Dropped);
95 assert_eq!(receiver.recv().ok(), None);