| commit | c85430888fcad84b3802f6548f7482157feb2982 | [log] [tgz] |
|---|---|---|
| author | James Farrell <jamesfarrell@google.com> | Tue Aug 06 17:04:29 2024 +0000 |
| committer | James Farrell <jamesfarrell@google.com> | Tue Aug 06 17:04:29 2024 +0000 |
| tree | 390093eaebf03f98d103d09bc99d59921080ece3 | |
| parent | 3795546d6b399c429228714316bd33ec2bb2441c [diff] |
Update Android.bp by running cargo_embargo Test: ran cargo_embargo Change-Id: Iea7dd11681b7114671e56ce6e0b5ce9e8de2f90b
A light-weight lock guarded by an atomic boolean.
Most efficient when contention is low, acquiring the lock is a single atomic swap, and releasing it just 1 more atomic swap.
use std::sync::Arc; use try_lock::TryLock; // a thing we want to share struct Widget { name: String, } // lock it up! let widget1 = Arc::new(TryLock::new(Widget { name: "Spanner".into(), })); let widget2 = widget1.clone(); // mutate the widget let mut locked = widget1.try_lock().expect("example isn't locked yet"); locked.name.push_str(" Bundle"); // hands off, buddy let not_locked = widget2.try_lock(); assert!(not_locked.is_none(), "widget1 has the lock"); // ok, you can have it drop(locked); let locked2 = widget2.try_lock().expect("widget1 lock is released"); assert_eq!(locked2.name, "Spanner Bundle");