blob: 563e35be3d63bf68157794363082c2d9a8a8cf0c (
plain)
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
|
// 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.
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)
}
// Local Variables:
// mode: rust;
// fill-column: 78;
// indent-tabs-mode: nil
// c-basic-offset: 4
// buffer-file-coding-system: utf-8-unix
// End:
|
