Struct Timer 

pub struct Timer<C> { /* private fields */ }

A timer that measures the point when an operation started and ended.

Implementations

impl<C: Clock> Timer<C>

pub fn start(clock: C) -> Self

Start a timer using Clock::now as its initial reading.

pub fn start_timestamp(&self) -> Option<Timestamp>

Get the timestamp taken when the timer was started.

If the underlying Clock was unable to produce an initial reading then this method will return None.

pub fn extent(&self) -> Option<Extent>

Get the value of the timer as an Extent, using Clock::now as its final reading.

If the underlying Clock is unable to produce a reading then this method will return None.

pub fn elapsed(&self) -> Option<Duration>

Get the timespan between the initial reading and Clock::now.

If the underlying Clock is unable to produce a reading, or it shifts to before the initial reading, then this method will return None.

This method is not guaranteed to return the actual time elapsed since the timer was started. It’s based on the difference between two readings of the underlying Clock, which is not guaranteed to be monotonic.

pub fn by_ref(&self) -> Timer<&C>

Get a new timer using the same initial reading, borrowing the Clock from this one.

Trait Implementations

impl<C: Clone> Clone for Timer<C>

fn clone(&self) -> Timer<C>

Returns a duplicate of the value.

fn clone_from(&mut self, source: &Self)

Performs copy-assignment from source.

impl<C: Copy> Copy for Timer<C>

impl<C: Clock> ToExtent for Timer<C>

fn to_extent(&self) -> Option<Extent>

Perform the conversion.