38 lines
1.2 KiB
Rust
38 lines
1.2 KiB
Rust
// Copyright 2012 The Rust Project Developers. See the COPYRIGHT
|
|
// file at the top-level directory of this distribution and at
|
|
// http://rust-lang.org/COPYRIGHT.
|
|
//
|
|
// Licensed under the Apache License, Version 2.0 <LICENSE-APACHE or
|
|
// http://www.apache.org/licenses/LICENSE-2.0> or the MIT license
|
|
// <LICENSE-MIT or http://opensource.org/licenses/MIT>, at your
|
|
// option. This file may not be copied, modified, or distributed
|
|
// except according to those terms.
|
|
|
|
// xfail-win32
|
|
|
|
// Create a task that is supervised by another task, join the supervised task
|
|
// from the supervising task, then fail the supervised task. The supervised
|
|
// task will kill the supervising task, waking it up. The supervising task no
|
|
// longer needs to be wakened when the supervised task exits.
|
|
|
|
use std::task;
|
|
|
|
fn supervised() {
|
|
// Yield to make sure the supervisor joins before we fail. This is
|
|
// currently not needed because the supervisor runs first, but I can
|
|
// imagine that changing.
|
|
task::yield();
|
|
fail!();
|
|
}
|
|
|
|
fn supervisor() {
|
|
// Unsupervise this task so the process doesn't return a failure status as
|
|
// a result of the main task being killed.
|
|
let f = supervised;
|
|
task::try(supervised);
|
|
}
|
|
|
|
pub fn main() {
|
|
task::spawn_unlinked(supervisor)
|
|
}
|