33 lines
1004 B
Rust
33 lines
1004 B
Rust
// Copyright 2012 The Rust Project Developers. See the COPYRIGHT
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// file at the top-level directory of this distribution and at
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// http://rust-lang.org/COPYRIGHT.
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//
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// Licensed under the Apache License, Version 2.0 <LICENSE-APACHE or
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// http://www.apache.org/licenses/LICENSE-2.0> or the MIT license
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// <LICENSE-MIT or http://opensource.org/licenses/MIT>, at your
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// option. This file may not be copied, modified, or distributed
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// except according to those terms.
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// xfail-test
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// This checks that preemption works.
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fn starve_main(alive: chan<int>) {
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debug!("signalling main");
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alive <| 1;
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debug!("starving main");
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let i: int = 0;
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loop { i += 1; }
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}
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pub fn main() {
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let alive: port<int> = port();
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debug!("main started");
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let s: task = spawn starve_main(chan(alive));
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let i: int;
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debug!("main waiting for alive signal");
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alive |> i;
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debug!("main got alive signal");
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while i < 50 { debug!("main iterated"); i += 1; }
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debug!("main completed");
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}
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