commit	3d969f5525afc26ab0fa569902a3e6fab4750139	[log] [tgz]
author	Android Build Coastguard Worker <[email protected]>	Thu Aug 08 01:14:58 2024 +0000
committer	Android Build Coastguard Worker <[email protected]>	Thu Aug 08 01:14:58 2024 +0000
tree	390093eaebf03f98d103d09bc99d59921080ece3
parent	50761b9e2a2f3cd1aa05daf640a0117f7223bf30 [diff]
parent	689215b36e63a9f2357ff819299e0bcbd1afff3b [diff]

tree: 390093eaebf03f98d103d09bc99d59921080ece3

README.md

TryLock

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.

Example

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");