Module timer

Provides a timer trait with timer-like functions

Example using tokio timer:

use std::{
    future::Future,
    pin::Pin,
    task::{Context, Poll},
    time::{Duration, Instant},
};

use pin_project_lite::pin_project;
use hyper::rt::{Timer, Sleep};

#[derive(Clone, Debug)]
pub struct TokioTimer;

impl Timer for TokioTimer {
    fn sleep(&self, duration: Duration) -> Pin<Box<dyn Sleep>> {
        Box::pin(TokioSleep {
            inner: tokio::time::sleep(duration),
        })
    }

    fn sleep_until(&self, deadline: Instant) -> Pin<Box<dyn Sleep>> {
        Box::pin(TokioSleep {
            inner: tokio::time::sleep_until(deadline.into()),
        })
    }

    fn reset(&self, sleep: &mut Pin<Box<dyn Sleep>>, new_deadline: Instant) {
        if let Some(sleep) = sleep.as_mut().downcast_mut_pin::<TokioSleep>() {
            sleep.reset(new_deadline.into())
        }
    }
}

pin_project! {
    pub(crate) struct TokioSleep {
        #[pin]
        pub(crate) inner: tokio::time::Sleep,
    }
}

impl Future for TokioSleep {
    type Output = ();

    fn poll(self: Pin<&mut Self>, cx: &mut Context<'_>) -> Poll<Self::Output> {
        self.project().inner.poll(cx)
    }
}

impl Sleep for TokioSleep {}

impl TokioSleep {
    pub fn reset(self: Pin<&mut Self>, deadline: Instant) {
        self.project().inner.as_mut().reset(deadline.into());
    }
}

Modules

• private 🔒

Traits

• Sleep
  A future returned by a Timer.
• Timer
  A timer which provides timer-like functions.