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4cb7743915
This is the closest Windows equivalent to integrating process exit handlers into the event loop. Linux could also integrate register_process() into the poll() based Unix event loop via the SYS_pidfd_open syscall; however, macOS requires a kqueue. So for now register_process will only be used by Windows to implement WebView::ProcessMonitor. Co-authored-by: Aliaksandr Kalenik <kalenik.aliaksandr@gmail.com>
68 lines
1.8 KiB
C++
68 lines
1.8 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 <LibCore/Export.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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class CORE_API 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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// 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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virtual void register_process([[maybe_unused]] pid_t pid, [[maybe_unused]] ESCAPING Function<void(pid_t)> exit_handler) { VERIFY_NOT_REACHED(); }
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virtual void unregister_process([[maybe_unused]] pid_t pid) { VERIFY_NOT_REACHED(); }
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protected:
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EventLoopManager();
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};
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class CORE_API 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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