Struct RegionTierState 

pub struct RegionTierState {
    pub region_id: OwnedRegionId,
    pub tier: Tier,
    pub last_access_epoch: u32,
    pub cut_value: u16,
    pub recency_score: u16,
    /* private fields */
}

Per-region metadata tracked by the tier manager.

Fields

region_id: OwnedRegionId

The region identifier.

tier: Tier

Current tier placement.

last_access_epoch: u32

Epoch of last access (monotonically increasing).

cut_value: u16

Coherence graph cut-value for this region (basis points, 0..=10_000). Defaults to 0 when coherence engine is absent (DC-1).

recency_score: u16

Recency score (basis points, 0..=10_000). Decays each epoch.

Implementations

impl RegionTierState

pub const fn residency_score(self) -> u16

Compute the composite residency score: cut_value + recency_score. Saturates at u16::MAX to avoid overflow.

Trait Implementations

impl Clone for RegionTierState

fn clone(&self) -> RegionTierState

Returns a duplicate of the value.

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

Performs copy-assignment from source.

impl Copy for RegionTierState

impl Debug for RegionTierState

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

Formats the value using the given formatter.