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// 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.
// Jump back and forth between the OS main thread and a new scheduler.
// The OS main scheduler should continue to be available and not terminate
// while it is not in use.
use std::task;
pub fn main() {
run(100);
}
fn run(i: int) {
debug!(i);
if i == 0 {
return;
}
let mut builder = task::task();
builder.sched_mode(task::PlatformThread);
builder.unlinked();
do builder.spawn {
task::yield();
let mut builder = task::task();
builder.sched_mode(task::SingleThreaded);
builder.unlinked();
do builder.spawn {
task::yield();
run(i - 1);
task::yield();
}
task::yield();
}
}
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