1 // Copyright 2014 The Rust Project Developers. See the COPYRIGHT
2 // file at the top-level directory of this distribution and at
3 // http://rust-lang.org/COPYRIGHT.
5 // Licensed under the Apache License, Version 2.0 <LICENSE-APACHE or
6 // http://www.apache.org/licenses/LICENSE-2.0> or the MIT license
7 // <LICENSE-MIT or http://opensource.org/licenses/MIT>, at your
8 // option. This file may not be copied, modified, or distributed
9 // except according to those terms.
11 use option::Option::None;
12 use rustrt::task::Task;
13 use rustrt::local::Local;
15 pub struct Flag { pub failed: bool }
18 pub fn borrow(&mut self) -> Guard {
19 Guard { flag: &mut self.failed, failing: failing() }
23 pub struct Guard<'a> {
29 pub fn check(&self, name: &str) {
31 panic!("poisoned {} - another task failed inside", name);
35 pub fn done(&mut self) {
36 if !self.failing && failing() {
42 fn failing() -> bool {
43 if Local::exists(None::<Task>) {
44 Local::borrow(None::<Task>).unwinder.unwinding()