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Return error if more than one listener calls WorkerHandle::get_event() (#5461)

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Yiyu Lin 2020-05-17 12:50:38 +08:00 • committed by GitHub
parent f12dffca9f
commit c4fe58d8df
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4 changed files with 11 additions and 11 deletions
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10
cli/worker.rs
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@ -51,11 +51,11 @@ impl WorkerHandle {
sender.try_send(buf).map_err(ErrBox::from)
}
// TODO: should use `try_lock` and return error if
// more than one listener tries to get event
pub async fn get_event(&self) -> Option<WorkerEvent> {
let mut receiver = self.receiver.lock().await;
receiver.next().await
/// Get the event with lock.
/// Return error if more than one listener tries to get event
pub async fn get_event(&self) -> Result<Option<WorkerEvent>, ErrBox> {
let mut receiver = self.receiver.try_lock()?;
Ok(receiver.next().await)
}
}