Enum HistoryKind 

pub enum HistoryKind {
    KeepAll,
    KeepLast {
        depth: usize,
    },
}

History-QoS (DDSI-RTPS §8.7.4, Spec Table 17).

Variants

KeepAll

Cache ist hart begrenzt; bei Overflow liefert insert einen CapacityExceeded-Fehler. Nuetzlich fuer No-Loss-Szenarien, in denen der Writer eher blockieren als Daten verwerfen will (Dateitransfer, Logging).

KeepLast

Cache haelt maximal depth neueste Samples. Bei Overflow faellt automatisch das aelteste Sample raus — Writer-insert schlaegt nie wegen Kapazitaet fehl. Spec-Default fuer DDS.

Fields

depth: usize

Maximalzahl Samples im Cache.

Trait Implementations

impl Clone for HistoryKind

fn clone(&self) -> HistoryKind

Returns a duplicate of the value.

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

Performs copy-assignment from source.

impl Debug for HistoryKind

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

Formats the value using the given formatter.

impl PartialEq for HistoryKind

fn eq(&self, other: &HistoryKind) -> 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 HistoryKind

impl Eq for HistoryKind

impl StructuralPartialEq for HistoryKind