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https://github.com/RGBCube/serenity
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909e522cf7
Since we can't simply give HTML::EventLoop control of the whole program, we have to integrate with Core::EventLoop. We do this by having a single-shot 0ms Core::Timer that we start when a task is added to the queue, and restart after processing the queue and there are still tasks in the queue.
62 lines
1.4 KiB
C++
62 lines
1.4 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 <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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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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private:
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Type m_type { Type::Window };
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TaskQueue m_task_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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};
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EventLoop& main_thread_event_loop();
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}
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