rust/src/test/run-pass/task-comm-14.rs
2012-05-07 13:22:42 -07:00

35 lines
679 B
Rust

use std;
import comm;
import task;
fn main() {
let po = comm::port::<int>();
let ch = comm::chan(po);
// Spawn 10 tasks each sending us back one int.
let mut i = 10;
while (i > 0) {
log(debug, i);
task::spawn {|copy i| child(i, ch); };
i = i - 1;
}
// Spawned tasks are likely killed before they get a chance to send
// anything back, so we deadlock here.
i = 10;
let mut value = 0;
while (i > 0) {
log(debug, i);
value = comm::recv(po);
i = i - 1;
}
#debug("main thread exiting");
}
fn child(x: int, ch: comm::chan<int>) {
log(debug, x);
comm::send(ch, copy x);
}