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std: Add a yield implementation for newsched

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This commit is contained in:
Brian Anderson 2013-07-08 18:06:17 -07:00
parent 7826651335
commit 29c9443d85
1 changed files with 19 additions and 4 deletions
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23
src/libstd/task/mod.rs
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@ -497,11 +497,26 @@ pub fn try<T:Send>(f: ~fn() -> T) -> Result<T,()> {
pub fn yield() {
//! Yield control to the task scheduler
use rt::{context, OldTaskContext};
use rt::local::Local;
use rt::sched::Scheduler;
unsafe {
let task_ = rt::rust_get_task();
let killed = rt::rust_task_yield(task_);
if killed && !failing() {
fail!("killed");
match context() {
OldTaskContext => {
let task_ = rt::rust_get_task();
let killed = rt::rust_task_yield(task_);
if killed && !failing() {
fail!("killed");
}
}
_ => {
// XXX: What does yield really mean in newsched?
let sched = Local::take::<Scheduler>();
do sched.deschedule_running_task_and_then |sched, task| {
sched.enqueue_task(task);
}
}
}
}
}