mirror of
https://github.com/rust-lang/rust.git
synced 2024-10-31 22:41:50 +00:00
34 lines
666 B
Rust
34 lines
666 B
Rust
// 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(); }
|
|
}
|