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script: Move TaskManager to GlobalScope (#34827)
This is a simplification of the internal `TaskQueue` API that moves the `TaskManager` to the `GlobalScope` itself. In addition, the handling of cancellers is moved to the `TaskManager` as well. This means that no arguments other than the `task` are necessary for queueing tasks, which makes the API a lot easier to use and cleaner. `TaskSource` now also keeps a copy of the canceller with it, so that they always know the proper way to cancel any tasks queued on them. There is one complication here. The event loop `sender` for dedicated workers is constantly changing as it is set to `None` when not handling messages. This is because this sender keeps a handle to the main thread's `Worker` object, preventing garbage collection while any messages are still in flight or being handled. This change allows setting the `sender` on the `TaskManager` to `None` to allow proper garbabge collection. Signed-off-by: Martin Robinson <mrobinson@igalia.com>
This commit is contained in:
Martin Robinson
GitHub
parent
75a22cfe2e
commit
b2eda71952
54 changed files with 1060 additions and 1516 deletions
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@ -696,37 +696,34 @@ impl Document {
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// But it's now Step 4 in https://html.spec.whatwg.org/multipage/#reactivate-a-document
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// TODO: See #32687 for more information.
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let document = Trusted::new(self);
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self.window
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self.window()
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.task_manager()
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.dom_manipulation_task_source()
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.queue(
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task!(fire_pageshow_event: move || {
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let document = document.root();
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let window = document.window();
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// Step 4.6.1
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if document.page_showing.get() {
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return;
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}
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// Step 4.6.2 Set document's page showing flag to true.
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document.page_showing.set(true);
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// Step 4.6.3 Update the visibility state of document to "visible".
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document.update_visibility_state(DocumentVisibilityState::Visible, CanGc::note());
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// Step 4.6.4 Fire a page transition event named pageshow at document's relevant
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// global object with true.
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let event = PageTransitionEvent::new(
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window,
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atom!("pageshow"),
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false, // bubbles
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false, // cancelable
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true, // persisted
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CanGc::note(),
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);
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let event = event.upcast::<Event>();
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event.set_trusted(true);
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window.dispatch_event_with_target_override(event, CanGc::note());
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}),
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self.window.upcast(),
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)
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.queue(task!(fire_pageshow_event: move || {
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let document = document.root();
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let window = document.window();
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// Step 4.6.1
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if document.page_showing.get() {
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return;
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}
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// Step 4.6.2 Set document's page showing flag to true.
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document.page_showing.set(true);
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// Step 4.6.3 Update the visibility state of document to "visible".
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document.update_visibility_state(DocumentVisibilityState::Visible, CanGc::note());
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// Step 4.6.4 Fire a page transition event named pageshow at document's relevant
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// global object with true.
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let event = PageTransitionEvent::new(
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window,
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atom!("pageshow"),
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false, // bubbles
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false, // cancelable
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true, // persisted
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CanGc::note(),
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);
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let event = event.upcast::<Event>();
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event.set_trusted(true);
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window.dispatch_event_with_target_override(event, CanGc::note());
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}))
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.unwrap();
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}
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@ -2129,14 +2126,9 @@ impl Document {
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request: RequestBuilder,
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listener: Listener,
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) {
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let (task_source, canceller) = self
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.window()
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.task_manager()
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.networking_task_source_with_canceller();
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let callback = NetworkListener {
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context: std::sync::Arc::new(Mutex::new(listener)),
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task_source,
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canceller: Some(canceller),
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task_source: self.window().task_manager().networking_task_source(),
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}
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.into_callback();
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self.loader_mut()
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@ -2149,14 +2141,9 @@ impl Document {
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listener: Listener,
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cancel_override: Option<ipc::IpcReceiver<()>>,
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) {
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let (task_source, canceller) = self
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.window()
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.task_manager()
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.networking_task_source_with_canceller();
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let callback = NetworkListener {
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context: std::sync::Arc::new(Mutex::new(listener)),
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task_source,
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canceller: Some(canceller),
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task_source: self.window().task_manager().networking_task_source(),
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}
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.into_callback();
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self.loader_mut()
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@ -2384,81 +2371,75 @@ impl Document {
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// Step 7.
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debug!("Document loads are complete.");
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let document = Trusted::new(self);
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self.window
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self.window()
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.task_manager()
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.dom_manipulation_task_source()
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.queue(
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task!(fire_load_event: move || {
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let document = document.root();
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let window = document.window();
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if !window.is_alive() {
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return;
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}
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.queue(task!(fire_load_event: move || {
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let document = document.root();
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let window = document.window();
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if !window.is_alive() {
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return;
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}
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// Step 7.1.
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document.set_ready_state(DocumentReadyState::Complete, CanGc::note());
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// Step 7.1.
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document.set_ready_state(DocumentReadyState::Complete, CanGc::note());
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// Step 7.2.
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if document.browsing_context().is_none() {
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return;
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}
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let event = Event::new(
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window.upcast(),
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atom!("load"),
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EventBubbles::DoesNotBubble,
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EventCancelable::NotCancelable,
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CanGc::note(),
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);
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event.set_trusted(true);
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// Step 7.2.
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if document.browsing_context().is_none() {
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return;
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}
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let event = Event::new(
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window.upcast(),
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atom!("load"),
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EventBubbles::DoesNotBubble,
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EventCancelable::NotCancelable,
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CanGc::note(),
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);
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event.set_trusted(true);
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// http://w3c.github.io/navigation-timing/#widl-PerformanceNavigationTiming-loadEventStart
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update_with_current_instant(&document.load_event_start);
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// http://w3c.github.io/navigation-timing/#widl-PerformanceNavigationTiming-loadEventStart
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update_with_current_instant(&document.load_event_start);
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debug!("About to dispatch load for {:?}", document.url());
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window.dispatch_event_with_target_override(&event, CanGc::note());
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debug!("About to dispatch load for {:?}", document.url());
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window.dispatch_event_with_target_override(&event, CanGc::note());
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// http://w3c.github.io/navigation-timing/#widl-PerformanceNavigationTiming-loadEventEnd
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update_with_current_instant(&document.load_event_end);
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// http://w3c.github.io/navigation-timing/#widl-PerformanceNavigationTiming-loadEventEnd
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update_with_current_instant(&document.load_event_end);
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if let Some(fragment) = document.url().fragment() {
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document.check_and_scroll_fragment(fragment, CanGc::note());
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}
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}),
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self.window.upcast(),
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)
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if let Some(fragment) = document.url().fragment() {
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document.check_and_scroll_fragment(fragment, CanGc::note());
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}
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}))
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.unwrap();
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// Step 8.
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let document = Trusted::new(self);
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if document.root().browsing_context().is_some() {
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self.window
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self.window()
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.task_manager()
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.dom_manipulation_task_source()
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.queue(
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task!(fire_pageshow_event: move || {
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let document = document.root();
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let window = document.window();
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if document.page_showing.get() || !window.is_alive() {
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return;
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}
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.queue(task!(fire_pageshow_event: move || {
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let document = document.root();
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let window = document.window();
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if document.page_showing.get() || !window.is_alive() {
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return;
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}
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document.page_showing.set(true);
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document.page_showing.set(true);
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let event = PageTransitionEvent::new(
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window,
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atom!("pageshow"),
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false, // bubbles
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false, // cancelable
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false, // persisted
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CanGc::note(),
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);
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let event = event.upcast::<Event>();
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event.set_trusted(true);
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let event = PageTransitionEvent::new(
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window,
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atom!("pageshow"),
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false, // bubbles
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false, // cancelable
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false, // persisted
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CanGc::note(),
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);
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let event = event.upcast::<Event>();
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event.set_trusted(true);
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window.dispatch_event_with_target_override(event, CanGc::note());
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}),
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self.window.upcast(),
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)
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window.dispatch_event_with_target_override(event, CanGc::note());
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}))
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.unwrap();
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}
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@ -2486,32 +2467,29 @@ impl Document {
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// TODO: fully implement "completely loaded".
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let document = Trusted::new(self);
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if document.root().browsing_context().is_some() {
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self.window
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self.window()
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.task_manager()
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.dom_manipulation_task_source()
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.queue(
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task!(completely_loaded: move || {
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let document = document.root();
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document.completely_loaded.set(true);
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if let Some(DeclarativeRefresh::PendingLoad {
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url,
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time
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}) = &*document.declarative_refresh.borrow() {
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// https://html.spec.whatwg.org/multipage/#shared-declarative-refresh-steps
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document.window.upcast::<GlobalScope>().schedule_callback(
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OneshotTimerCallback::RefreshRedirectDue(RefreshRedirectDue {
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window: DomRoot::from_ref(document.window()),
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url: url.clone(),
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}),
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Duration::from_secs(*time),
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);
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}
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// Note: this will, among others, result in the "iframe-load-event-steps" being run.
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// https://html.spec.whatwg.org/multipage/#iframe-load-event-steps
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document.notify_constellation_load();
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}),
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self.window.upcast(),
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)
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.queue(task!(completely_loaded: move || {
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let document = document.root();
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document.completely_loaded.set(true);
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if let Some(DeclarativeRefresh::PendingLoad {
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url,
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time
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}) = &*document.declarative_refresh.borrow() {
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// https://html.spec.whatwg.org/multipage/#shared-declarative-refresh-steps
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document.window.upcast::<GlobalScope>().schedule_callback(
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OneshotTimerCallback::RefreshRedirectDue(RefreshRedirectDue {
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window: DomRoot::from_ref(document.window()),
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url: url.clone(),
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}),
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Duration::from_secs(*time),
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);
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}
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// Note: this will, among others, result in the "iframe-load-event-steps" being run.
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// https://html.spec.whatwg.org/multipage/#iframe-load-event-steps
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document.notify_constellation_load();
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}))
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.unwrap();
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}
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}
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@ -2657,9 +2635,8 @@ impl Document {
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update_with_current_instant(&self.dom_content_loaded_event_start);
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// Step 4.1.
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let window = self.window();
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let document = Trusted::new(self);
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window
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self.window()
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.task_manager()
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.dom_manipulation_task_source()
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.queue(
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@ -2667,8 +2644,7 @@ impl Document {
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let document = document.root();
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document.upcast::<EventTarget>().fire_bubbling_event(atom!("DOMContentLoaded"), CanGc::note());
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update_with_current_instant(&document.dom_content_loaded_event_end);
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}),
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window.upcast(),
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})
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)
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.unwrap();
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@ -2713,8 +2689,9 @@ impl Document {
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// Note: the spec says to discard any tasks queued for fetch.
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// This cancels all tasks on the networking task source, which might be too broad.
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// See https://github.com/whatwg/html/issues/3837
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self.window
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.cancel_all_tasks_from_source(TaskSourceName::Networking);
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self.window()
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.task_manager()
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.cancel_pending_tasks_for_source(TaskSourceName::Networking);
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// Step 3.
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if let Some(parser) = self.get_current_parser() {
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