Struct PerfRing 

pub struct PerfRing { /* private fields */ }

The last frames’ records, oldest first, and how many older ones were dropped: LogRing’s twin. Each record pushed gets a sequence number, from 0 and never reused, so a reader takes the records since the last it took.

Implementations

impl PerfRing

pub fn new(capacity: usize) -> Self

An empty ring that keeps capacity records.

pub fn push(&mut self, record: FrameRecord)

Keeps record, dropping (and counting) the oldest when full.

pub fn records(&self) -> Iter<'_, FrameRecord>

The kept records, oldest first.

pub fn dropped(&self) -> u64

How many records were dropped to keep the newest.

pub fn next_seq(&self) -> u64

The sequence number the next record pushed gets.

pub fn since(&self, seq: u64) -> Iter<'_, FrameRecord>

The kept records whose sequence number is seq or more, oldest first: those after the last a reader took, if it kept next_seq then.

Trait Implementations

impl Clone for PerfRing

fn clone(&self) -> PerfRing

Returns a duplicate of the value.

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

Performs copy-assignment from source.

impl Debug for PerfRing

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

Formats the value using the given formatter.

impl Eq for PerfRing

impl PartialEq for PerfRing

fn eq(&self, other: &PerfRing) -> bool

Equality operator ==.

fn ne(&self, other: &Rhs) -> bool

Inequality operator !=.

impl StructuralPartialEq for PerfRing