87fc7028d7
The WebSocket spec tells us to queue tasks instead of firing events synchronously at WebSockets, so this commit does exactly that. The way we've implemented web sockets means that the work is spread across multiple libraries and even processes, which is why it doesn't look like the spec verbatim.
110 lines
3 KiB
C++
110 lines
3 KiB
C++
/*
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* Copyright (c) 2021-2024, Andreas Kling <andreas@ladybird.org>
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*
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* SPDX-License-Identifier: BSD-2-Clause
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*/
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#pragma once
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#include <AK/DistinctNumeric.h>
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#include <LibGC/CellAllocator.h>
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#include <LibJS/Heap/Cell.h>
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#include <LibWeb/Forward.h>
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namespace Web::HTML {
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struct UniqueTaskSource;
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AK_TYPEDEF_DISTINCT_NUMERIC_GENERAL(u64, TaskID, Comparison);
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class Task final : public JS::Cell {
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GC_CELL(Task, JS::Cell);
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GC_DECLARE_ALLOCATOR(Task);
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public:
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// https://html.spec.whatwg.org/multipage/webappapis.html#generic-task-sources
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enum class Source {
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Unspecified,
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DOMManipulation,
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UserInteraction,
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Networking,
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HistoryTraversal,
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IdleTask,
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PostedMessage,
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Microtask,
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TimerTask,
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JavaScriptEngine,
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// https://html.spec.whatwg.org/multipage/webappapis.html#navigation-and-traversal-task-source
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NavigationAndTraversal,
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// https://w3c.github.io/FileAPI/#fileReadingTaskSource
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FileReading,
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// https://www.w3.org/TR/intersection-observer/#intersectionobserver-task-source
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IntersectionObserver,
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// https://w3c.github.io/performance-timeline/#dfn-performance-timeline-task-source
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PerformanceTimeline,
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// https://html.spec.whatwg.org/multipage/canvas.html#canvas-blob-serialisation-task-source
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CanvasBlobSerializationTask,
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// https://w3c.github.io/clipboard-apis/#clipboard-task-source
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Clipboard,
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// https://w3c.github.io/permissions/#permissions-task-source
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Permissions,
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// https://drafts.csswg.org/css-font-loading/#task-source
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FontLoading,
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// https://html.spec.whatwg.org/multipage/server-sent-events.html#remote-event-task-source
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RemoteEvent,
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// https://html.spec.whatwg.org/multipage/webappapis.html#rendering-task-source
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Rendering,
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// https://w3c.github.io/IndexedDB/#database-access-task-source
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DatabaseAccess,
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// https://websockets.spec.whatwg.org/#websocket-task-source
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WebSocket,
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// !!! IMPORTANT: Keep this field last!
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// This serves as the base value of all unique task sources.
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// Some elements, such as the HTMLMediaElement, must have a unique task source per instance.
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UniqueTaskSourceStart
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};
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static GC::Ref<Task> create(JS::VM&, Source, GC::Ptr<DOM::Document const>, GC::Ref<GC::Function<void()>> steps);
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virtual ~Task() override;
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[[nodiscard]] TaskID id() const { return m_id; }
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Source source() const { return m_source; }
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void execute();
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DOM::Document const* document() const;
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bool is_runnable() const;
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private:
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Task(Source, GC::Ptr<DOM::Document const>, GC::Ref<GC::Function<void()>> steps);
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virtual void visit_edges(Visitor&) override;
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TaskID m_id {};
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Source m_source { Source::Unspecified };
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GC::Ref<GC::Function<void()>> m_steps;
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GC::Ptr<DOM::Document const> m_document;
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};
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struct UniqueTaskSource {
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UniqueTaskSource();
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~UniqueTaskSource();
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Task::Source const source;
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};
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}
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