Type Alias Poll 

pub type Poll<T = ()> = Poll<T>;

Indicates whether a value is available or if the current task has been scheduled to receive a wakeup instead.

Aliased Type

pub enum Poll<T = ()> {
    Ready(T),
    Pending,
}

Variants

Ready(T)

Represents that a value is immediately ready.

Pending

Represents that a value is not ready yet.

When a function returns Pending, the function must also ensure that the current task is scheduled to be awoken when progress can be made.