Enum AsyncResult

pub enum AsyncResult<T> {
    Pending,
    Completed(T),
    Consumed,
}

The result of a successful call to an async poller operation such as in System.

Variants

Pending

The async operation is still pending and has not completed.

Completed(T)

The async operation completed with the given value.

Consumed

The async operation was completed and the result was already consumed.

Implementations

impl<T> AsyncResult<T>

pub fn new() -> Self

Constructs a new async result handle in the AsyncResult::Pending state.

pub fn complete(&mut self, value: T) -> Result<(), T>

Transitions from the AsyncResult::Pending state to AsyncResult::Completed with the provided result value. If this async result handle has already been completed, Err is returned with the passed value.

pub fn poll(&mut self) -> Self

Polls the status of the async operation. A AsyncResult::Completed result transitions permanently to the AsyncResult::Consumed state.