pub struct Interval { /* private fields */ }
Available on crate feature time only.
Expand description

Interval returned by interval and interval_at.

This type allows you to wait on a sequence of instants with a certain duration between each instant. Unlike calling sleep in a loop, this lets you count the time spent between the calls to sleep as well.

An Interval can be turned into a Stream with IntervalStream.

Implementations

Completes when the next instant in the interval has been reached.

Cancel safety

This method is cancellation safe. If tick is used as the branch in a tokio::select! and another branch completes first, then no tick has been consumed.

Examples
use tokio::time;

use std::time::Duration;

#[tokio::main]
async fn main() {
    let mut interval = time::interval(Duration::from_millis(10));

    interval.tick().await;
    interval.tick().await;
    interval.tick().await;

    // approximately 20ms have elapsed.
}

Polls for the next instant in the interval to be reached.

This method can return the following values:

  • Poll::Pending if the next instant has not yet been reached.
  • Poll::Ready(instant) if the next instant has been reached.

When this method returns Poll::Pending, the current task is scheduled to receive a wakeup when the instant has elapsed. Note that on multiple calls to poll_tick, only the Waker from the Context passed to the most recent call is scheduled to receive a wakeup.

Resets the interval to complete one period after the current time.

This method ignores MissedTickBehavior strategy.

Examples
use tokio::time;

use std::time::Duration;

#[tokio::main]
async fn main() {
    let mut interval = time::interval(Duration::from_millis(100));

    interval.tick().await;

    time::sleep(Duration::from_millis(50)).await;
    interval.reset();

    interval.tick().await;
    interval.tick().await;

    // approximately 250ms have elapsed.
}

Returns the MissedTickBehavior strategy currently being used.

Sets the MissedTickBehavior strategy that should be used.

Returns the period of the interval.

Trait Implementations

Formats the value using the given formatter. Read more

Auto Trait Implementations

Blanket Implementations

Gets the TypeId of self. Read more

Immutably borrows from an owned value. Read more

Mutably borrows from an owned value. Read more

Returns the argument unchanged.

Instruments this type with the provided Span, returning an Instrumented wrapper. Read more

Instruments this type with the current Span, returning an Instrumented wrapper. Read more

Calls U::from(self).

That is, this conversion is whatever the implementation of From<T> for U chooses to do.

The type returned in the event of a conversion error.

Performs the conversion.

The type returned in the event of a conversion error.

Performs the conversion.

Attaches the provided Subscriber to this type, returning a WithDispatch wrapper. Read more

Attaches the current default Subscriber to this type, returning a WithDispatch wrapper. Read more