rust/src/test/run-pass/task-comm-14.rs
2012-09-19 13:59:58 -07:00

34 lines
652 B
Rust

// xfail-fast
#[legacy_modes];
fn main() {
let po = pipes::PortSet();
// Spawn 10 tasks each sending us back one int.
let mut i = 10;
while (i > 0) {
log(debug, i);
let (ch, p) = pipes::stream();
po.add(p);
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;
while (i > 0) {
log(debug, i);
po.recv();
i = i - 1;
}
debug!("main thread exiting");
}
fn child(x: int, ch: pipes::Chan<int>) {
log(debug, x);
ch.send(x);
}