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https://github.com/servo/servo.git
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944d371b8f
stylo: Improve restyling performance This commit adds hooks to the Servo style traversal to avoid traversing all the DOM for every restyle. Additionally it changes the behavior of the dirty flag to be propagated top down, to prevent extra overhead when an element is dirtied. This commit doesn't aim to change the behavior on Servo just yet, since Servo does extra job when dirtying the node related with DOM revision counters that might be necessary. CC @asajeffrey for the DOM revision counters stuff. When a node is dirty, do all its descendants really need to increment the revision counter, or is this an unintended effect? My intuition is that this is hurting performance quite a lot for servo. r? @bholley <!-- Please describe your changes on the following line: --> --- <!-- Thank you for contributing to Servo! Please replace each `[ ]` by `[X]` when the step is complete, and replace `__` with appropriate data: --> - [x] `./mach build -d` does not report any errors - [x] `./mach test-tidy` does not report any errors <!-- Either: --> - [x] These changes do not require tests because no geckolib tests yet. <!-- Pull requests that do not address these steps are welcome, but they will require additional verification as part of the review process. --> <!-- Reviewable:start --> --- This change is [<img src="https://reviewable.io/review_button.svg" height="34" align="absmiddle" alt="Reviewable"/>](https://reviewable.io/reviews/servo/servo/12563) <!-- Reviewable:end -->
184 lines
7.7 KiB
Rust
184 lines
7.7 KiB
Rust
/* This Source Code Form is subject to the terms of the Mozilla Public
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* License, v. 2.0. If a copy of the MPL was not distributed with this
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* file, You can obtain one at http://mozilla.org/MPL/2.0/. */
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use AnimationState;
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use DocumentState;
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use IFrameLoadInfo;
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use MouseButton;
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use MouseEventType;
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use MozBrowserEvent;
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use WorkerGlobalScopeInit;
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use WorkerScriptLoadOrigin;
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use canvas_traits::CanvasMsg;
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use devtools_traits::{ScriptToDevtoolsControlMsg, WorkerId};
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use euclid::point::Point2D;
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use euclid::size::Size2D;
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use gfx_traits::LayerId;
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use ipc_channel::ipc::IpcSender;
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use msg::constellation_msg::{Key, KeyModifiers, KeyState, LoadData};
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use msg::constellation_msg::{PipelineId, SubpageId, TraversalDirection};
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use net_traits::CoreResourceMsg;
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use offscreen_gl_context::{GLContextAttributes, GLLimits};
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use style_traits::cursor::Cursor;
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use style_traits::viewport::ViewportConstraints;
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use url::Url;
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/// Messages from the layout to the constellation.
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#[derive(Deserialize, Serialize)]
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pub enum LayoutMsg {
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/// Indicates whether this pipeline is currently running animations.
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ChangeRunningAnimationsState(PipelineId, AnimationState),
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/// Requests that the constellation inform the compositor of the a cursor change.
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SetCursor(Cursor),
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/// Notifies the constellation that the viewport has been constrained in some manner
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ViewportConstrained(PipelineId, ViewportConstraints),
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}
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/// Whether a DOM event was prevented by web content
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#[derive(Deserialize, Serialize)]
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pub enum EventResult {
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/// Allowed by web content
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DefaultAllowed,
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/// Prevented by web content
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DefaultPrevented,
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}
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/// A log entry reported to the constellation
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/// We don't report all log entries, just serious ones.
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/// We need a separate type for this because LogLevel isn't serializable.
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#[derive(Clone, Debug, Deserialize, Serialize)]
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pub enum LogEntry {
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/// Panic, with a reason and backtrace
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Panic(String, String),
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/// Error, with a reason
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Error(String),
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/// warning, with a reason
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Warn(String)
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}
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/// Messages from the script to the constellation.
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#[derive(Deserialize, Serialize)]
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#[serde(bound = "")] // Prevent serde from generating cyclic bounds.
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pub enum ScriptMsg {
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/// Indicates whether this pipeline is currently running animations.
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ChangeRunningAnimationsState(PipelineId, AnimationState),
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/// Requests that a new 2D canvas thread be created. (This is done in the constellation because
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/// 2D canvases may use the GPU and we don't want to give untrusted content access to the GPU.)
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CreateCanvasPaintThread(Size2D<i32>, IpcSender<IpcSender<CanvasMsg>>),
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/// Requests that a new WebGL thread be created. (This is done in the constellation because
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/// WebGL uses the GPU and we don't want to give untrusted content access to the GPU.)
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CreateWebGLPaintThread(Size2D<i32>,
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GLContextAttributes,
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IpcSender<Result<(IpcSender<CanvasMsg>, GLLimits), String>>),
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/// Notifies the constellation that this frame has received focus.
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Focus(PipelineId),
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/// Re-send a mouse button event that was sent to the parent window.
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ForwardMouseButtonEvent(PipelineId, MouseEventType, MouseButton, Point2D<f32>),
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/// Re-send a mouse move event that was sent to the parent window.
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ForwardMouseMoveEvent(PipelineId, Point2D<f32>),
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/// Requests that the constellation retrieve the current contents of the clipboard
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GetClipboardContents(IpcSender<String>),
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/// <head> tag finished parsing
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HeadParsed,
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/// All pending loads are complete, and the `load` event for this pipeline
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/// has been dispatched.
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LoadComplete(PipelineId),
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/// A new load has been requested.
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LoadUrl(PipelineId, LoadData),
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/// Dispatch a mozbrowser event to a given iframe,
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/// or to the window if no subpage id is provided.
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MozBrowserEvent(PipelineId, Option<SubpageId>, MozBrowserEvent),
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/// HTMLIFrameElement Forward or Back traversal.
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TraverseHistory(Option<PipelineId>, TraversalDirection),
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/// Favicon detected
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NewFavicon(Url),
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/// Status message to be displayed in the chrome, eg. a link URL on mouseover.
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NodeStatus(Option<String>),
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/// Notification that this iframe should be removed.
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RemoveIFrame(PipelineId, Option<IpcSender<()>>),
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/// Change pipeline visibility
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SetVisible(PipelineId, bool),
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/// Notifies constellation that an iframe's visibility has been changed.
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VisibilityChangeComplete(PipelineId, bool),
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/// A load has been requested in an IFrame.
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ScriptLoadedURLInIFrame(IFrameLoadInfo),
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/// Requests that the constellation set the contents of the clipboard
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SetClipboardContents(String),
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/// Mark a new document as active
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ActivateDocument(PipelineId),
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/// Set the document state for a pipeline (used by screenshot / reftests)
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SetDocumentState(PipelineId, DocumentState),
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/// Update the pipeline Url, which can change after redirections.
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SetFinalUrl(PipelineId, Url),
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/// Check if an alert dialog box should be presented
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Alert(PipelineId, String, IpcSender<bool>),
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/// Scroll a page in a window
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ScrollFragmentPoint(PipelineId, LayerId, Point2D<f32>, bool),
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/// Set title of current page
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/// https://html.spec.whatwg.org/multipage/#document.title
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SetTitle(PipelineId, Option<String>),
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/// Send a key event
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SendKeyEvent(Option<char>, Key, KeyState, KeyModifiers),
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/// Get Window Informations size and position
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GetClientWindow(IpcSender<(Size2D<u32>, Point2D<i32>)>),
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/// Move the window to a point
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MoveTo(Point2D<i32>),
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/// Resize the window to size
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ResizeTo(Size2D<u32>),
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/// Script has handled a touch event, and either prevented or allowed default actions.
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TouchEventProcessed(EventResult),
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/// Get Scroll Offset
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GetScrollOffset(PipelineId, LayerId, IpcSender<Point2D<f32>>),
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/// A log entry, with the pipeline id and thread name
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LogEntry(Option<PipelineId>, Option<String>, LogEntry),
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/// Notifies the constellation that this pipeline has exited.
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PipelineExited(PipelineId),
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/// Store the data required to activate a service worker for the given scope
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RegisterServiceWorker(ScopeThings, Url),
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/// Requests that the compositor shut down.
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Exit
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}
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/// Entities required to spawn service workers
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#[derive(Deserialize, Serialize, Clone)]
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pub struct ScopeThings {
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/// script resource url
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pub script_url: Url,
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/// pipeline which requested the activation
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pub pipeline_id: PipelineId,
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/// network load origin of the resource
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pub worker_load_origin: WorkerScriptLoadOrigin,
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/// base resources required to create worker global scopes
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pub init: WorkerGlobalScopeInit,
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/// the port to receive devtools message from
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pub devtools_chan: Option<IpcSender<ScriptToDevtoolsControlMsg>>,
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/// service worker id
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pub worker_id: WorkerId,
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}
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/// Channels to allow service worker manager to communicate with constellation and resource thread
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pub struct SWManagerSenders {
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/// sender for communicating with constellation
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pub swmanager_sender: IpcSender<SWManagerMsg>,
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/// sender for communicating with resource thread
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pub resource_sender: IpcSender<CoreResourceMsg>
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}
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/// Messages sent to Service Worker Manager thread
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#[derive(Deserialize, Serialize)]
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pub enum ServiceWorkerMsg {
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/// Message to register the service worker
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RegisterServiceWorker(ScopeThings, Url),
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/// Timeout message sent by active service workers
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Timeout(Url),
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/// Exit the service worker manager
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Exit,
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}
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/// Messages outgoing from the Service Worker Manager thread to constellation
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#[derive(Deserialize, Serialize)]
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pub enum SWManagerMsg {
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/// Provide the constellation with a means of communicating with the Service Worker Manager
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OwnSender(IpcSender<ServiceWorkerMsg>),
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}
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