Struct Tasks 

pub struct Tasks<'w> { /* private fields */ }

The tasks behind Serving and Streaming, rows in the non-send Executions table: a task is !Send on wasm and cannot be a component, and one storage keeps one code path on both targets.

Implementations

impl Tasks<'_>

pub fn serving(&mut self, entity: Entity, task: Task<Reply>) -> Serving

The Serving component for task.

pub fn poll(&mut self, entity: Entity) -> Option<Reply>

Whether the serving task finished: its reply, once.

pub fn streaming( &mut self, entity: Entity, stream: StreamEvents, capacity: usize, wake: Wake, ) -> Streaming

A Streaming component driving stream on the pool.

pub fn forget_stream(&mut self, entity: Entity)

The stream worker of entity is done with: dropped now.

pub fn with<T>( world: &mut World, f: impl FnOnce(&mut Tasks<'_>) -> T, ) -> Option<T>

The tasks of world, for an exclusive system. None when the bus is not installed (the table is missing).

Trait Implementations

impl<'w, 's> ReadOnlySystemParam for Tasks<'w>

where NonSendMut<'w, Executions>: ReadOnlySystemParam,

impl SystemParam for Tasks<'_>

type State = FetchState

Used to store data which persists across invocations of a system.

type Item<'w, 's> = Tasks<'w>

The item type returned when constructing this system param. The value of this associated type should be Self, instantiated with new lifetimes.

fn init_state(world: &mut World) -> Self::State

Creates a new instance of this param’s State.

fn init_access( state: &Self::State, system_meta: &mut SystemMeta, component_access_set: &mut FilteredAccessSet, world: &mut World, )

Registers any World access used by this SystemParam.

fn apply(state: &mut Self::State, system_meta: &SystemMeta, world: &mut World)

Applies any deferred mutations stored in this SystemParam’s state. This is used to apply Commands during ApplyDeferred.

fn queue( state: &mut Self::State, system_meta: &SystemMeta, world: DeferredWorld<'_>, )

Queues any deferred mutations to be applied at the next ApplyDeferred.

unsafe fn get_param<'w, 's>( state: &'s mut Self::State, system_meta: &SystemMeta, world: UnsafeWorldCell<'w>, change_tick: Tick, ) -> Result<Self::Item<'w, 's>, SystemParamValidationError>

Creates a parameter to be passed into a SystemParamFunction.