Struct script::dom::worklet::WorkletThread

struct WorkletThread {
    role: WorkletThreadRole,
    control_receiver: Receiver<WorkletControl>,
    primary_sender: Sender<WorkletData>,
    hot_backup_sender: Sender<WorkletData>,
    cold_backup_sender: Sender<WorkletData>,
    global_init: WorkletGlobalScopeInit,
    global_scopes: HashMap<WorkletId, Dom<WorkletGlobalScope>>,
    control_buffer: Option<WorkletControl>,
    runtime: Runtime,
    should_gc: bool,
    gc_threshold: u32,
}

A thread for executing worklets.

Fields

role: WorkletThreadRole

Which role the thread is currently playing

control_receiver: Receiver<WorkletControl>

The thread’s receiver for control messages

primary_sender: Sender<WorkletData>

Senders

hot_backup_sender: Sender<WorkletData>

cold_backup_sender: Sender<WorkletData>

global_init: WorkletGlobalScopeInit

Data for initializing new worklet global scopes

global_scopes: HashMap<WorkletId, Dom<WorkletGlobalScope>>

The global scopes created by this thread

control_buffer: Option<WorkletControl>

A one-place buffer for control messages

runtime: Runtime

The JS runtime

should_gc: bool

gc_threshold: u32

Implementations

impl WorkletThread

fn spawn( role: WorkletThreadRole, init: WorkletThreadInit, thread_index: u8 ) -> Sender<WorkletControl>

Spawn a new worklet thread, returning the channel to send it control messages.

fn run(&mut self)

The main event loop for a worklet thread

fn current_memory_usage(&self) -> u32

The current memory usage of the thread

fn gc(&mut self)

Perform a GC.

fn get_worklet_global_scope( &mut self, pipeline_id: PipelineId, worklet_id: WorkletId, global_type: WorkletGlobalScopeType, base_url: ServoUrl ) -> Root<Dom<WorkletGlobalScope>>

Get the worklet global scope for a given worklet. Creates the worklet global scope if it doesn’t exist.

fn fetch_and_invoke_a_worklet_script( &self, global_scope: &WorkletGlobalScope, pipeline_id: PipelineId, origin: ImmutableOrigin, script_url: ServoUrl, credentials: RequestCredentials, pending_tasks_struct: PendingTasksStruct, promise: TrustedPromise )

Fetch and invoke a worklet script. https://drafts.css-houdini.org/worklets/#fetch-and-invoke-a-worklet-script

fn perform_a_worklet_task(&self, worklet_id: WorkletId, task: WorkletTask)

Perform a task.

fn process_control(&mut self, control: WorkletControl)

Process a control message.

fn run_in_script_thread<T>(&self, task: T)where T: TaskBox + 'static,

Run a task in the main script thread.

Trait Implementations

impl Traceable for WorkletThread

unsafe fn trace(&self, trc: *mut JSTracer)

Trace self.