Struct OpApplyStats 

pub struct OpApplyStats {
    pub applied_count: u64,
    pub last_ops: usize,
    pub last_translate: Duration,
    pub last_apply_end: Option<Instant>,
}

Live instrumentation of the [apply_js_ops] hot path. Updated once per frame that applies at least one reconciler op (empty frames leave it untouched), so a benchmark driver — or any consumer — can poll applied_count to detect “my flushed batch has landed” and read the timing of the most recent batch.

Note last_translate measures only the op→command queuing in [apply_js_ops]; the queued Commands (entity spawn / component insert / hierarchy) execute later at a sync point, and bevy_ui layout later still — neither is included here. last_apply_end is exposed so a downstream timer can bracket those phases (e.g. up to UiSystems::Layout).

Timings are wall-clock, measured on native only; on web they stay zero/None (std::time::Instant is unavailable on wasm).

Fields

applied_count: u64

Count of non-empty op batches applied since startup (one increment per frame that applied at least one op).

last_ops: usize

Number of ops in the most recently applied batch.

last_translate: Duration

Time spent translating the most recent batch into ECS commands — the [apply_js_ops] body only. Excludes command execution and layout.

last_apply_end: Option<Instant>

The instant [apply_js_ops] finished queuing the most recent batch (native only). A later system can subtract this from a post-layout instant to time command execution + layout.

Trait Implementations

impl Clone for OpApplyStats

fn clone(&self) -> OpApplyStats

Returns a duplicate of the value.

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

Performs copy-assignment from source.

impl Component for OpApplyStats

where Self: Send + Sync + 'static,

const STORAGE_TYPE: StorageType = ::bevy::ecs::component::StorageType::SparseSet

A constant indicating the storage type used for this component.

type Mutability = Mutable

A marker type to assist Bevy with determining if this component is mutable, or immutable. Mutable components will have Component<Mutability = Mutable>, while immutable components will instead have Component<Mutability = Immutable>.

fn register_required_components( _requiree: ComponentId, required_components: &mut RequiredComponentsRegistrator<'_, '_>, )

Registers required components.

fn clone_behavior() -> ComponentCloneBehavior

Called when registering this component, allowing to override clone function (or disable cloning altogether) for this component.

fn relationship_accessor() -> Option<ComponentRelationshipAccessor<Self>>

Returns ComponentRelationshipAccessor required for working with relationships in dynamic contexts.

fn on_add() -> Option<for<'w> fn(DeferredWorld<'w>, HookContext)>

Gets the on_add ComponentHook for this Component if one is defined.

fn on_insert() -> Option<for<'w> fn(DeferredWorld<'w>, HookContext)>

Gets the on_insert ComponentHook for this Component if one is defined.

fn on_discard() -> Option<for<'w> fn(DeferredWorld<'w>, HookContext)>

Gets the on_discard ComponentHook for this Component if one is defined.

fn on_remove() -> Option<for<'w> fn(DeferredWorld<'w>, HookContext)>

Gets the on_remove ComponentHook for this Component if one is defined.

fn on_despawn() -> Option<for<'w> fn(DeferredWorld<'w>, HookContext)>

Gets the on_despawn ComponentHook for this Component if one is defined.

fn map_entities<E>(_this: &mut Self, _mapper: &mut E)

where E: EntityMapper,

Maps the entities on this component using the given EntityMapper. This is used to remap entities in contexts like scenes and entity cloning. When deriving Component, this is populated by annotating fields containing entities with #[entities]

impl Copy for OpApplyStats

impl Debug for OpApplyStats

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

Formats the value using the given formatter.

impl Default for OpApplyStats

fn default() -> OpApplyStats

Returns the “default value” for a type.

impl Resource for OpApplyStats

where Self: Send + Sync + 'static,