1 // Copyright 2013-2014 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 // Tests that a heterogeneous list of existential types can be put inside an Arc
12 // and shared between tasks as long as all types fulfill Send.
15 use std::sync::mpsc::channel;
16 use std::thread::Thread;
19 fn name(&self, blk: |&str|);
20 fn num_legs(&self) -> uint;
21 fn of_good_pedigree(&self) -> bool;
41 fn name(&self, blk: |&str|) { blk(self.name.as_slice()) }
42 fn num_legs(&self) -> uint { 4 }
43 fn of_good_pedigree(&self) -> bool { self.num_whiskers >= 4 }
46 fn name(&self, blk: |&str|) { blk(self.name.as_slice()) }
47 fn num_legs(&self) -> uint { 4 }
48 fn of_good_pedigree(&self) -> bool {
49 self.bark_decibels < 70 || self.tricks_known > 20
52 impl Pet for Goldfyshe {
53 fn name(&self, blk: |&str|) { blk(self.name.as_slice()) }
54 fn num_legs(&self) -> uint { 0 }
55 fn of_good_pedigree(&self) -> bool { self.swim_speed >= 500 }
59 let catte = Catte { num_whiskers: 7, name: "alonzo_church".to_string() };
63 name: "alan_turing".to_string(),
68 name: "albert_einstein".to_string(),
70 let fishe = Goldfyshe {
72 name: "alec_guinness".to_string(),
74 let arc = Arc::new(vec!(box catte as Box<Pet+Sync+Send>,
75 box dogge1 as Box<Pet+Sync+Send>,
76 box fishe as Box<Pet+Sync+Send>,
77 box dogge2 as Box<Pet+Sync+Send>));
78 let (tx1, rx1) = channel();
79 let arc1 = arc.clone();
80 let _t1 = Thread::spawn(move|| { check_legs(arc1); tx1.send(()); });
81 let (tx2, rx2) = channel();
82 let arc2 = arc.clone();
83 let _t2 = Thread::spawn(move|| { check_names(arc2); tx2.send(()); });
84 let (tx3, rx3) = channel();
85 let arc3 = arc.clone();
86 let _t3 = Thread::spawn(move|| { check_pedigree(arc3); tx3.send(()); });
92 fn check_legs(arc: Arc<Vec<Box<Pet+Sync+Send>>>) {
94 for pet in arc.iter() {
95 legs += pet.num_legs();
99 fn check_names(arc: Arc<Vec<Box<Pet+Sync+Send>>>) {
100 for pet in arc.iter() {
102 assert!(name.as_bytes()[0] == 'a' as u8 && name.as_bytes()[1] == 'l' as u8);
106 fn check_pedigree(arc: Arc<Vec<Box<Pet+Sync+Send>>>) {
107 for pet in arc.iter() {
108 assert!(pet.of_good_pedigree());