Enum HistoryKind 

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

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

Variants

KeepAll

The cache is hard-bounded; on overflow insert returns a CapacityExceeded error. Useful for no-loss scenarios in which the writer prefers to block rather than discard data (file transfer, logging).

KeepLast

The cache holds at most depth newest samples. On overflow the oldest sample drops out automatically — the writer insert never fails due to capacity. The spec default for DDS.

Fields

depth: usize

Maximum number of samples in the 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 Copy for HistoryKind

impl Debug for HistoryKind

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

Formats the value using the given formatter.

impl Eq for HistoryKind

impl PartialEq for HistoryKind

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

Equality operator ==.

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

Inequality operator !=.

impl StructuralPartialEq for HistoryKind