82 lines
2.2 KiB
C++
82 lines
2.2 KiB
C++
/*
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* Copyright (c) 2021, Andreas Kling <kling@serenityos.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/Function.h>
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#include <AK/WeakPtr.h>
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#include <LibCore/Forward.h>
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#include <LibJS/Forward.h>
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#include <LibWeb/HTML/EventLoop/TaskQueue.h>
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namespace Web::HTML {
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class EventLoop {
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public:
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enum class Type {
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// https://html.spec.whatwg.org/multipage/webappapis.html#window-event-loop
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Window,
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// https://html.spec.whatwg.org/multipage/webappapis.html#worker-event-loop
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Worker,
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// https://html.spec.whatwg.org/multipage/webappapis.html#worklet-event-loop
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Worklet,
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};
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EventLoop();
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~EventLoop();
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Type type() const { return m_type; }
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TaskQueue& task_queue() { return m_task_queue; }
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TaskQueue const& task_queue() const { return m_task_queue; }
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TaskQueue& microtask_queue() { return m_microtask_queue; }
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TaskQueue const& microtask_queue() const { return m_microtask_queue; }
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void spin_until(Function<bool()> goal_condition);
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void process();
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Task const* currently_running_task() const { return m_currently_running_task; }
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JS::VM& vm() { return *m_vm; }
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JS::VM const& vm() const { return *m_vm; }
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void set_vm(JS::VM&);
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void schedule();
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void perform_a_microtask_checkpoint();
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void register_document(Badge<DOM::Document>, DOM::Document&);
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void unregister_document(Badge<DOM::Document>, DOM::Document&);
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NonnullRefPtrVector<DOM::Document> documents_in_this_event_loop() const;
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private:
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Type m_type { Type::Window };
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TaskQueue m_task_queue;
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TaskQueue m_microtask_queue;
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// https://html.spec.whatwg.org/multipage/webappapis.html#currently-running-task
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Task* m_currently_running_task { nullptr };
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JS::VM* m_vm { nullptr };
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RefPtr<Core::Timer> m_system_event_loop_timer;
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// https://html.spec.whatwg.org/#performing-a-microtask-checkpoint
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bool m_performing_a_microtask_checkpoint { false };
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Vector<WeakPtr<DOM::Document>> m_documents;
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};
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EventLoop& main_thread_event_loop();
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void queue_global_task(HTML::Task::Source, DOM::Document&, Function<void()> steps);
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void queue_a_microtask(DOM::Document&, Function<void()> steps);
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void perform_a_microtask_checkpoint();
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}
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