Struct HeatMap 

pub struct HeatMap {
    pub buckets: usize,
    pub span_ns: u64,
    pub counts: Vec<u64>,
}

A heat map showing call density over time.

Fields

buckets: usize

Number of time buckets.

span_ns: u64

Total time span covered in nanoseconds.

counts: Vec<u64>

Counts per bucket.

Implementations

impl HeatMap

pub fn new(buckets: usize, span_ns: u64) -> Self

Create a heat map with buckets time slots covering span_ns.

pub fn record(&mut self, timestamp_ns: u64, start_ns: u64)

Record an event at the given timestamp.

pub fn peak_bucket(&self) -> usize

Return the bucket with the maximum count.

pub fn render_ascii(&self) -> String

Format as ASCII art.