Struct EventLoopWaker 

pub struct EventLoopWaker(pub Arc<dyn Fn() + Send + Sync>);

Cross-thread handle used to wake a parked platform event loop after something is pushed onto a resource the tick loop doesn’t otherwise observe until the next OS event - e.g. lumen-mcp’s SimulateQueue filling from the MCP server thread while lumen-window-winit’s winit loop sits parked in about_to_wait. Without a wakeup, injected input is invisible until an unrelated OS event (mouse move, resize, …) happens to tick the app.

Backends that run a real OS event loop insert this as a main-world resource once they have a way to interrupt their own park/wait call (lumen-window-winit::run does it via a winit::event_loop::EventLoopProxy). Headless/test contexts simply never insert it, so callers must treat its absence as “no loop to wake” and no-op.

Tuple Fields

0: Arc<dyn Fn() + Send + Sync>

Implementations

impl EventLoopWaker

pub fn wake(&self)

Invoke the wakeup callback.

Trait Implementations

impl Clone for EventLoopWaker

fn clone(&self) -> EventLoopWaker

Returns a duplicate of the value.

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

Performs copy-assignment from source.

impl Component for EventLoopWaker

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 Debug for EventLoopWaker

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

Formats the value using the given formatter.

impl Resource for EventLoopWaker

where Self: Send + Sync + 'static,