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Also removes: * `std::task` * `std::rt::task` * `std::rt::thread` Notes for the new API are in a follow-up commit. Closes #18000
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// Copyright 2014 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. | ||
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struct ThreadInfo { | ||
// This field holds the known bounds of the stack in (lo, hi) | ||
// form. Not all threads necessarily know their precise bounds, | ||
// hence this is optional. | ||
stack_bounds: (uint, uint), | ||
stack_guard: uint, | ||
unwinder: Unwinder, | ||
thread: Thread, | ||
} | ||
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thread_local!(static THREAD_INFO: RefCell<Option<ThreadInfo>> = RefCell::new(None)); | ||
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impl ThreadInfo { | ||
fn with<R>(f: |&ThreadInfo| -> R) -> R { | ||
THREAD_INFO.with(|c| { | ||
if c.borrow().is_none() { | ||
*c.borrow_mut() = Some(ThreadInfo { | ||
stack_bounds: (0, 0), | ||
stack_guard: 0, | ||
unwinder: Unwinder::new(), | ||
thread: Thread::new(None), | ||
}) | ||
} | ||
f(c.borrow().as_ref().unwrap()) | ||
}) | ||
} | ||
} | ||
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pub fn current_thread() -> Thread { | ||
ThreadInfo::with(|info| info.thread.clone()) | ||
} | ||
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pub fn panicking() -> bool { | ||
ThreadInfo::with(|info| info.unwinder.unwinding()) | ||
} | ||
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pub fn set(stack_bounds: (uint, uint), stack_guard: uint, thread: Thread) { | ||
THREAD_INFO.with(|c| assert!(c.borrow().is_none())); | ||
THREAD_INFO.with(|c| *c.borrow_mut() = Some(ThreadInfo{ | ||
stack_bounds: stack_bounds, | ||
stack_guard: stack_guard, | ||
unwinder: Unwinder::new(), | ||
thread: thread, | ||
})); | ||
} | ||
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// a hack to get around privacy restrictions; implemented by `std::thread::Thread` | ||
pub trait NewThread { | ||
fn new(name: Option<String>) -> Self; | ||
} |
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