Trait Timer 

pub trait Timer: Send + Sync {
    // Required methods
    fn deadline(
        &self,
        waker: Waker,
        deadline: Instant,
    ) -> Result<Option<Handle>>;
    fn timeout_wait(&self, waker: Waker, handle: &Handle) -> Poll<()>;
}

Available on crate feature time only.

Timer-related system call interface

Required Methods

fn deadline(&self, waker: Waker, deadline: Instant) -> Result<Option<Handle>>

Create new deadline timer, returns None if the deadline instant is reached.

fn timeout_wait(&self, waker: Waker, handle: &Handle) -> Poll<()>

Wait timeout event.

Returns Poll::Ready(()) if the timer already reached the deadline, otherwise returns Poll::Pending and needs to be retried later.

We don’t need to return CancelablePoll, because the implementation should stop the timer when the timer handler drops.

Dyn Compatibility

This trait is dyn compatible.

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

Implementors