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Add oneshot::Sender::is_canceled() method

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This commit is contained in:
Nikolay Kim 2019-12-11 20:52:57 +06:00
parent b28f32e82c
commit 52ecb4bcc5
2 changed files with 10 additions and 0 deletions
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2
actix-utils/CHANGES.md
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@ -4,6 +4,8 @@
* Allow to create `framed::Dispatcher` with custom `mpsc::Receiver` * Allow to create `framed::Dispatcher` with custom `mpsc::Receiver`
* Add `oneshot::Sender::is_canceled()` method
## [1.0.1] - 2019-12-11 ## [1.0.1] - 2019-12-11
* Optimize InOrder service * Optimize InOrder service

8
actix-utils/src/oneshot.rs
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@ -67,6 +67,12 @@ impl<T> Sender<T> {
Err(val) Err(val)
} }
} }
/// Tests to see whether this `Sender`'s corresponding `Receiver`
/// has gone away.
pub fn is_canceled(&self) -> bool {
self.inner.strong_count() == 1
}
} }
impl<T> Drop for Sender<T> { impl<T> Drop for Sender<T> {
@ -110,7 +116,9 @@ mod tests {
assert_eq!(rx.await.unwrap(), "test"); assert_eq!(rx.await.unwrap(), "test");
let (tx, rx) = channel(); let (tx, rx) = channel();
assert!(!tx.is_canceled());
drop(rx); drop(rx);
assert!(tx.is_canceled());
assert!(tx.send("test").is_err()); assert!(tx.send("test").is_err());
let (tx, rx) = channel::<&'static str>(); let (tx, rx) = channel::<&'static str>();