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22 lines
635 B
Rust
22 lines
635 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::atomics::{AtomicUint, INIT_ATOMIC_UINT, SeqCst};
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static mut next_tid: AtomicUint = INIT_ATOMIC_UINT;
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local_data_key!(task_local_tid: uint)
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/// Every task gets one, that's unique.
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pub fn tid() -> uint {
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let ret =
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match task_local_tid.replace(None) {
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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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task_local_tid.replace(Some(ret));
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ret
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}
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