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https://github.com/LadybirdBrowser/ladybird.git
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96ce468b60
Add a thread-safe deferred_invoke() API on WeakEventLoopReference that queues work onto the owning thread's event queue and wakes that thread via EventLoopManager hooks. This avoids calling wake() from foreign threads during teardown. Implement current_thread_handle()/wake_thread() in each backend and track per-thread data so handles are validated before waking: - Unix: wake via per-thread wake pipe - Windows: wake via thread wake event - macOS: wake via stored CFRunLoopRef - Qt: wake via event target or QEventLoop::wakeUp() - Android: wake via stored ALooper
68 lines
1.7 KiB
C++
68 lines
1.7 KiB
C++
/*
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* Copyright (c) 2022-2023, 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/Function.h>
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#include <AK/Types.h>
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#include <LibCore/Forward.h>
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namespace Core {
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class EventLoopImplementation;
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class ThreadEventQueue;
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using EventLoopThreadHandle = FlatPtr;
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class EventLoopManager {
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public:
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static EventLoopManager& the();
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static void install(EventLoopManager&);
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virtual ~EventLoopManager();
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virtual NonnullOwnPtr<EventLoopImplementation> make_implementation() = 0;
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virtual intptr_t register_timer(EventReceiver&, int milliseconds, bool should_reload) = 0;
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virtual void unregister_timer(intptr_t timer_id) = 0;
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virtual void register_notifier(Notifier&) = 0;
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virtual void unregister_notifier(Notifier&) = 0;
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virtual void did_post_event() = 0;
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virtual EventLoopThreadHandle current_thread_handle() = 0;
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virtual void wake_thread(EventLoopThreadHandle) = 0;
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// FIXME: These APIs only exist for obscure use-cases inside SerenityOS. Try to get rid of them.
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virtual int register_signal(int signal_number, Function<void(int)> handler) = 0;
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virtual void unregister_signal(int handler_id) = 0;
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protected:
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EventLoopManager();
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};
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class EventLoopImplementation {
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public:
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virtual ~EventLoopImplementation();
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enum class PumpMode {
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WaitForEvents,
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DontWaitForEvents,
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};
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virtual int exec() = 0;
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virtual size_t pump(PumpMode) = 0;
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virtual void quit(int) = 0;
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virtual void wake() = 0;
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virtual bool was_exit_requested() const = 0;
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virtual void deferred_invoke(Function<void()>&&);
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protected:
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EventLoopImplementation();
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ThreadEventQueue& m_thread_event_queue;
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};
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}
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