Trait WorkerExpiration 

pub trait WorkerExpiration:
    'static
    + Send
    + Sync {
    // Required method
    fn poll(
        self: Pin<&mut Self>,
        cx: &mut Context<'_>,
        state: WorkerStatus,
        start: Instant,
    ) -> Poll<()>;
}

Available on crate feature component-model-async only.

Represents the application-specific state of a ProxyHandler worker.

HandlerState::instantiate returns an implementation of this trait for each component instance (and thus each worker) created. The worker uses it to determine when to exit.

Required Methods

fn poll( self: Pin<&mut Self>, cx: &mut Context<'_>, state: WorkerStatus, start: Instant, ) -> Poll<()>

Poll whether the worker has expired.

This will return Poll::Ready(()) if the worker has expired, meaning the component instance should be dropped. Otherwise, it will return Poll::Pending and wake the Waker if and when it should be polled again.

state represents the current state of the worker, and start represents when it transitioned into that state (or in the case of WorkerState::Requests, when the most recent outstanding request was accepted).

Dyn Compatibility

This trait is dyn compatible.

In older versions of Rust, dyn compatibility was called "object safety".

Implementors