Struct FirstLatencyMetric 

pub struct FirstLatencyMetric { /* private fields */ }

A latency metric that captures only the first recorded value, ignoring all subsequent ones. Uses 0 as the unset sentinel (valid durations are clamped to at least 1 nanosecond).

Implementations

impl FirstLatencyMetric

pub fn from_nanos(nanos: usize) -> Self

pub fn value(&self) -> usize

pub fn add_elapsed(&self, start: Instant)

pub fn add_duration(&self, duration: Duration)

Trait Implementations

impl Clone for FirstLatencyMetric

fn clone(&self) -> FirstLatencyMetric

Returns a duplicate of the value.

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

Performs copy-assignment from source.

impl CustomMetricValue for FirstLatencyMetric

fn new_empty(&self) -> Arc<dyn CustomMetricValue>

Returns a new, zero-initialized version of this metric value.

fn aggregate(&self, other: Arc<dyn CustomMetricValue + 'static>)

Merges another metric value into this one.

fn as_any(&self) -> &dyn Any

Returns this value as a Any to support dynamic downcasting.

fn as_usize(&self) -> usize

Optionally returns a numeric representation of the value, if meaningful. Otherwise will default to zero.

fn is_eq(&self, other: &Arc<dyn CustomMetricValue>) -> bool

Compares this value with another custom value.

impl Debug for FirstLatencyMetric

fn fmt(&self, f: &mut Formatter<'_>) -> Result

Formats the value using the given formatter.

impl Default for FirstLatencyMetric

fn default() -> FirstLatencyMetric

Returns the “default value” for a type.

impl Display for FirstLatencyMetric

fn fmt(&self, f: &mut Formatter<'_>) -> Result

Formats the value using the given formatter.