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 of the HistoryCache statistics at a single point in time. Produced by HistoryCacheStats::snapshot; each component is loaded with Acquire ordering.

Fields

len: usize

Number of changes.

evicted: u64

Number of samples discarded by KeepLast eviction.

max_sn: Option<SequenceNumber>

Highest SN, if present.

min_sn: Option<SequenceNumber>

Lowest SN, if present.

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 Copy for HistoryCacheSnapshot

impl Debug for HistoryCacheSnapshot

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

Formats the value using the given formatter.

impl Eq for HistoryCacheSnapshot

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 StructuralPartialEq for HistoryCacheSnapshot