Trait governor::clock::Reference

pub trait Reference: Sized + Add<Nanos, Output = Self> + PartialEq + Eq + Ord + Copy + Clone + Send + Sync + Debug {
    // Required methods
    fn duration_since(&self, earlier: Self) -> Nanos;
    fn saturating_sub(&self, duration: Nanos) -> Self;
}

A measurement from a clock.

Required Methods

fn duration_since(&self, earlier: Self) -> Nanos

Determines the time that separates two measurements of a clock. Implementations of this must perform a saturating subtraction - if the earlier timestamp should be later, duration_since must return the zero duration.

fn saturating_sub(&self, duration: Nanos) -> Self

Returns a reference point that lies at most duration in the past from the current reference. If an underflow should occur, returns the current reference.

Object Safety

This trait is not object safe.

Implementations on Foreign Types

impl Reference for Duration

fn duration_since(&self, earlier: Self) -> Nanos

The internal duration between this point and another.

let diff = Duration::from_secs(20).duration_since(Duration::from_secs(10));
assert_eq!(diff, Duration::from_secs(10).into());

fn saturating_sub(&self, duration: Nanos) -> Self

The internal duration between this point and another.

let diff = Reference::saturating_sub(&Duration::from_secs(20), Duration::from_secs(10).into());
assert_eq!(diff, Duration::from_secs(10));

impl Reference for Instant

fn duration_since(&self, earlier: Self) -> Nanos

fn saturating_sub(&self, duration: Nanos) -> Self

impl Reference for SystemTime

fn duration_since(&self, earlier: Self) -> Nanos

Returns the difference in times between the two SystemTimes. Due to the fallible nature of SystemTimes, returns the zero duration if a negative duration would result (e.g. due to system clock adjustments).

fn saturating_sub(&self, duration: Nanos) -> Self

Implementors

impl Reference for Nanos

impl Reference for QuantaInstant