Struct AccessCounters 

pub struct AccessCounters {
    pub query_count: AtomicU64,
    pub rows_scanned: AtomicU64,
}

Online access-pattern counters for one component type.

Updated once per query (off the per-element hot path), read by the DCC / telemetry to decide whether a memory-layout repack would pay off. Atomics so they can be recorded through &self. One small entry per component type (not per entity): the memory cost is constant, not proportional to the world.

Fields

query_count: AtomicU64

Number of queries that touched this component.

rows_scanned: AtomicU64

Cumulative rows visited across those queries.

Trait Implementations

impl Debug for AccessCounters

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

Formats the value using the given formatter.

impl Default for AccessCounters

fn default() -> AccessCounters

Returns the “default value” for a type.