Struct Histogram 

pub struct Histogram { /* private fields */ }

Thread-safe histogram with configurable buckets.

Each observation is placed into the appropriate bucket(s) and contributes to the running sum and count.

Implementations

impl Histogram

pub fn new(name: &'static str, help: &'static str, buckets: Vec<f64>) -> Self

Create a new histogram with the given bucket boundaries.

Buckets are sorted automatically. A +Inf bucket is always appended internally.

pub fn observe(&self, value: f64)

Record an observation.

pub fn time<F, R>(&self, f: F) -> R

where F: FnOnce() -> R,

Time a closure and record its duration in seconds.

pub fn name(&self) -> &'static str

Name of this histogram.

pub fn help(&self) -> &'static str

Help text for this histogram.

pub fn count(&self) -> u64

Get the total observation count.

pub fn sum(&self) -> f64

Get the running sum.

pub fn bucket_count(&self, index: usize) -> u64

Get cumulative count for a specific bucket index.

pub fn bucket_boundaries(&self) -> &[f64]

Get the bucket boundaries (excluding +Inf).