Struct RuntimeHandle 

pub struct RuntimeHandle { /* private fields */ }

Implementations

impl RuntimeHandle

pub fn id(&self) -> RuntimeId

pub fn state_arena_stats(&self) -> (usize, usize)

pub fn state_arena_debug_stats(&self) -> StateArenaDebugStats

pub fn debug_stats(&self) -> RuntimeDebugStats

pub fn live_ui_task_labels(&self) -> Vec<(u64, String)>

pub fn schedule(&self)

pub fn enqueue_ui_task(&self, task: Box<dyn FnOnce() + 'static>)

Schedules work that must run on the runtime thread.

The closure executes on the UI thread immediately when the runtime drains its local queue, so it may capture Rc/RefCell values. Calling this from any other thread is a logic error and will panic in debug builds via the inner assertion.

pub fn spawn_ui<F>(&self, fut: F) -> Option<TaskHandle>

where F: Future<Output = ()> + 'static,

pub fn cancel_task(&self, id: u64)

pub fn has_task(&self, id: u64) -> bool

Whether the runtime still holds the spawned task id.

pub fn post_ui(&self, task: impl FnOnce() + Send + 'static)

Enqueues work from any thread to run on the UI thread.

The closure must be Send because it may cross threads before executing on the runtime thread. Use this when posting from background work.

pub fn register_ui_cont<T: 'static>( &self, f: impl FnOnce(T) + 'static, ) -> Option<u64>

pub fn cancel_ui_cont(&self, id: u64)

pub fn drain_ui(&self)

pub fn has_pending_ui(&self) -> bool

pub fn register_frame_callback( &self, callback: impl FnOnce(u64) + 'static, ) -> Option<u64>

pub fn register_perpetual_frame_callback( &self, callback: impl FnOnce(u64) + 'static, ) -> Option<u64>

pub fn cancel_frame_callback(&self, id: u64)

pub fn drain_frame_callbacks(&self, frame_time_nanos: u64)

Delivers callbacks registered before this display frame. Timestamps use one monotonic nanosecond epoch; duplicate or older timestamps are ignored. A callback registered during delivery waits for a newer frame timestamp.

pub fn last_frame_time_nanos(&self) -> Option<u64>

Animation-clock time of the most recent frame-callback drain (see Runtime::last_frame_time_nanos).

pub fn frame_clock(&self) -> FrameClock

pub fn set_needs_frame(&self, value: bool)

pub fn has_updates(&self) -> bool

pub fn forget_movable(&self, id: Key)

Releases the retained state of the movable content with identity id at the composition’s next opportunity. See crate::forget_movable.

pub fn has_invalid_scopes(&self) -> bool

pub fn has_frame_callbacks(&self) -> bool

pub fn has_transient_frame_callbacks(&self) -> bool

pub fn assert_ui_thread(&self)

pub fn dispatcher(&self) -> UiDispatcher

Trait Implementations

impl Clone for RuntimeHandle

fn clone(&self) -> Self

Returns a duplicate of the value.

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

Performs copy-assignment from source.