[rustc.git] / tests / ui / box / unit / unique-send-2.rs

// run-pass
#![allow(unused_must_use)]
// ignore-emscripten no threads support

use std::sync::mpsc::{channel, Sender};
use std::thread;

fn child(tx: &Sender<Box<usize>>, i: usize) {
    tx.send(Box::new(i)).unwrap();
}

pub fn main() {
    let (tx, rx) = channel();
    let n = 100;
    let mut expected = 0;
    let ts = (0..n).map(|i| {
        expected += i;
        let tx = tx.clone();
        thread::spawn(move|| {
            child(&tx, i)
        })
    }).collect::<Vec<_>>();

    let mut actual = 0;
    for _ in 0..n {
        let j = rx.recv().unwrap();
        actual += *j;
    }

    assert_eq!(expected, actual);

    for t in ts { t.join(); }
}
Commit	Line	Data
b7449926	1	// run-pass
0bf4aa26	2	#![allow(unused_must_use)]
7453a54e	3	// ignore-emscripten no threads support
c34b1796	4
1a4d82fc	5	use std::sync::mpsc::{channel, Sender};
85aaf69f	6	use std::thread;
1a4d82fc	7
c34b1796	8	fn child(tx: &Sender<Box<usize>>, i: usize) {
c295e0f8	9	tx.send(Box::new(i)).unwrap();
223e47cc LB	10	}
	11
	12	pub fn main() {
1a4d82fc	13	let (tx, rx) = channel();
c34b1796 AL	14	let n = 100;
c34b1796 AL	15	let mut expected = 0;
9346a6ac	16	let ts = (0..n).map(\|i\| {
223e47cc	17	expected += i;
1a4d82fc	18	let tx = tx.clone();
9346a6ac	19	thread::spawn(move\|\| {
1a4d82fc JJ	20	child(&tx, i)
	21	})
	22	}).collect::<Vec<_>>();
223e47cc	23
c34b1796 AL	24	let mut actual = 0;
c34b1796 AL	25	for _ in 0..n {
1a4d82fc	26	let j = rx.recv().unwrap();
223e47cc LB	27	actual += *j;
	28	}
	29
970d7e83	30	assert_eq!(expected, actual);
9346a6ac AL	31
9346a6ac AL	32	for t in ts { t.join(); }
223e47cc	33	}