src/test/run-pass/task-comm-7.rs

   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.
   4 //
   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.
  10
  11 // pretty-expanded FIXME #23616
  12
  13 #![feature(std_misc)]
  14 #![allow(dead_assignment)]
  15
  16 use std::sync::mpsc::{channel, Sender};
  17 use std::thread;
  18
  19 pub fn main() { test00(); }
  20
  21 fn test00_start(c: &Sender<isize>, start: isize,
  22                 number_of_messages: isize) {
  23     let mut i: isize = 0;
  24     while i < number_of_messages { c.send(start + i).unwrap(); i += 1; }
  25 }
  26
  27 fn test00() {
  28     let mut r: isize = 0;
  29     let mut sum: isize = 0;
  30     let (tx, rx) = channel();
  31     let number_of_messages: isize = 10;
  32
  33     let tx2 = tx.clone();
  34     let _t = thread::scoped(move|| {
  35         test00_start(&tx2, number_of_messages * 0, number_of_messages);
  36     });
  37     let tx2 = tx.clone();
  38     let _t = thread::scoped(move|| {
  39         test00_start(&tx2, number_of_messages * 1, number_of_messages);
  40     });
  41     let tx2 = tx.clone();
  42     let _t = thread::scoped(move|| {
  43         test00_start(&tx2, number_of_messages * 2, number_of_messages);
  44     });
  45     let tx2 = tx.clone();
  46     let _t = thread::scoped(move|| {
  47         test00_start(&tx2, number_of_messages * 3, number_of_messages);
  48     });
  49
  50     let mut i: isize = 0;
  51     while i < number_of_messages {
  52         r = rx.recv().unwrap();
  53         sum += r;
  54         r = rx.recv().unwrap();
  55         sum += r;
  56         r = rx.recv().unwrap();
  57         sum += r;
  58         r = rx.recv().unwrap();
  59         sum += r;
  60         i += 1;
  61     }
  62
  63     assert_eq!(sum, number_of_messages * 4 * (number_of_messages * 4 - 1) / 2);
  64 }