Struct Ring 

struct Ring {
    head: i64,
    counts: [u32; 24],
}

A ring of hourly counters, newest at head.

Fields

head: i64

counts: [u32; 24]

Implementations

impl Ring

fn new(at: i64) -> Self

fn advance(&mut self, at: i64)

Moves the head to at, clearing the buckets passed on the way. An instant at or before the head leaves the head where it is: now is supplied per write, and a write presented with an earlier instant than one already counted lands in the newest bucket rather than reopening a bucket that has closed.

fn read(&self, window: Window) -> u64

fn add(&mut self)

Counts one more in the newest bucket. Saturates: something that has reached u32::MAX in an hour is past every limit there is, and wrapping would put it back under one.

fn aged_out(&self, at: i64) -> bool

Trait Implementations

impl Clone for Ring

fn clone(&self) -> Ring

Returns a duplicate of the value.

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

Performs copy-assignment from source.

impl Debug for Ring

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

Formats the value using the given formatter.

impl Copy for Ring