12 releases
0.3.3 | Mar 23, 2022 |
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0.3.1 | Mar 15, 2022 |
0.2.2 | Mar 12, 2022 |
0.1.5 | Dec 12, 2016 |
#372 in Concurrency
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arc-cell
A simple library for a concurrent Cell-like object containing an Arc/Weak reference.
[dependencies]
arc-cell = "0.3"
Usage
Lightweight swappable Arc member
use std::sync::Arc;
use arc_cell::ArcCell;
pub struct Thing {
data: ArcCell<Vec<u8>>,
}
impl Thing {
pub fn update(&self, data: Arc<Vec<u8>>) {
self.data.set(data);
}
}
Self-referencial structure
use std::sync::Arc;
use arc_cell::WeakCell;
pub struct Thing {
self_ref: WeakCell<Thing>,
// ...
}
impl Thing {
pub fn new() -> Arc<Thing> {
let thing = Arc::new(Thing {
self_ref: WeakCell::empty(),
});
thing.self_ref.store(&thing);
thing
}
pub fn clone_ref(&self) -> Arc<Thing> {
self.self_ref.upgrade().expect("This should be valid if we have a valid self")
}
}