Trait PollOnce 

pub trait PollOnce {
    // Required method
    fn poll_once(
        &mut self,
    ) -> impl Future<Output = Result<(), PollOnceError>> + Send;
}

An extension trait for polling an Execution Extension future.

Required Methods

fn poll_once( &mut self, ) -> impl Future<Output = Result<(), PollOnceError>> + Send

Polls the given Execution Extension future once. The future should be (pinned)std::pin::pin.

Returns

• Ok(()) if the future returned Poll::Pending. The future can be polled again.
• Err(PollOnceError::FutureIsReady) if the future returned Poll::Ready without an error. The future should never resolve.
• Err(PollOnceError::FutureError(err)) if the future returned Poll::Ready with an error. Something went wrong.

Dyn Compatibility

This trait is not dyn compatible.

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

Implementors

impl<F: Future<Output = Result<()>> + Unpin + Send> PollOnce for F