rust/src/test/run-pass/task-comm-14.rs
2011-10-20 20:34:04 -07:00

35 lines
648 B
Rust

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