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26 lines
777 B
Rust
26 lines
777 B
Rust
/* This Source Code Form is subject to the terms of the Mozilla Public
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* License, v. 2.0. If a copy of the MPL was not distributed with this
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* file, You can obtain one at http://mozilla.org/MPL/2.0/. */
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use std::sync::atomic::{AtomicUint, INIT_ATOMIC_UINT, SeqCst};
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use std::rc::Rc;
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use std::cell::RefCell;
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static mut next_tid: AtomicUint = INIT_ATOMIC_UINT;
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thread_local!(static TASK_LOCAL_TID: Rc<RefCell<Option<uint>>> = Rc::new(RefCell::new(None)))
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/// Every task gets one, that's unique.
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pub fn tid() -> uint {
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TASK_LOCAL_TID.with(|ref k| {
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let ret =
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match *k.borrow() {
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None => unsafe { next_tid.fetch_add(1, SeqCst) },
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Some(x) => x,
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};
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*k.borrow_mut() = Some(ret);
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ret
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})
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}
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