Struct HistoryCacheSnapshot 

pub struct HistoryCacheSnapshot {
    pub len: usize,
    pub evicted: u64,
    pub max_sn: Option<SequenceNumber>,
    pub min_sn: Option<SequenceNumber>,
}

Plain-Old-Data-Snapshot der HistoryCache-Statistiken zu einem einzelnen Zeitpunkt. Wird von HistoryCacheStats::snapshot erzeugt; jede Komponente ist mit Acquire-Ordering geladen.

Fields

len: usize

Anzahl Changes.

evicted: u64

Anzahl per KeepLast-Eviction verworfener Samples.

max_sn: Option<SequenceNumber>

Hoechste SN, falls vorhanden.

min_sn: Option<SequenceNumber>

Niedrigste SN, falls vorhanden.

Trait Implementations

impl Clone for HistoryCacheSnapshot

fn clone(&self) -> HistoryCacheSnapshot

Returns a duplicate of the value.

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

Performs copy-assignment from source.

impl Debug for HistoryCacheSnapshot

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

Formats the value using the given formatter.

impl PartialEq for HistoryCacheSnapshot

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

Tests for self and other values to be equal, and is used by ==.

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

Tests for !=. The default implementation is almost always sufficient, and should not be overridden without very good reason.

impl Copy for HistoryCacheSnapshot

impl Eq for HistoryCacheSnapshot

impl StructuralPartialEq for HistoryCacheSnapshot