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2d39da5405
I've been wanting to do this for a long time. It's time we start being consistent about how this stuff works. The new convention is: - "LibFoo" is a userspace library that provides the "Foo" namespace. That's it :^) This was pretty tedious to convert and I didn't even start on LibGUI yet. But it's coming up next.
122 lines
3.6 KiB
C++
122 lines
3.6 KiB
C++
/*
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* Copyright (c) 2018-2020, Andreas Kling <kling@serenityos.org>
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* All rights reserved.
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*
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* Redistribution and use in source and binary forms, with or without
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* modification, are permitted provided that the following conditions are met:
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*
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* 1. Redistributions of source code must retain the above copyright notice, this
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* list of conditions and the following disclaimer.
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*
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* 2. Redistributions in binary form must reproduce the above copyright notice,
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* this list of conditions and the following disclaimer in the documentation
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* and/or other materials provided with the distribution.
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*
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* THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS"
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* AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
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* IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE
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* DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT HOLDER OR CONTRIBUTORS BE LIABLE
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* FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
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* DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR
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* SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER
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* CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY,
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* OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
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* OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
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*/
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#pragma once
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#include <AK/Badge.h>
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#include <AK/HashMap.h>
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#include <AK/OwnPtr.h>
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#include <AK/Vector.h>
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#include <AK/WeakPtr.h>
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#include <LibCore/CEvent.h>
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#include <LibCore/CLocalServer.h>
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#include <LibThread/Lock.h>
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#include <sys/select.h>
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#include <sys/time.h>
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#include <time.h>
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namespace Core {
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class Object;
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class Notifier;
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class EventLoop {
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public:
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EventLoop();
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~EventLoop();
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int exec();
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enum class WaitMode {
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WaitForEvents,
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PollForEvents,
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};
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// processe events, generally called by exec() in a loop.
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// this should really only be used for integrating with other event loops
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void pump(WaitMode = WaitMode::WaitForEvents);
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void post_event(Object& receiver, NonnullOwnPtr<Event>&&);
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static EventLoop& main();
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static EventLoop& current();
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bool was_exit_requested() const { return m_exit_requested; }
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static int register_timer(Object&, int milliseconds, bool should_reload, TimerShouldFireWhenNotVisible);
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static bool unregister_timer(int timer_id);
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static void register_notifier(Badge<Notifier>, Notifier&);
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static void unregister_notifier(Badge<Notifier>, Notifier&);
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void quit(int);
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void unquit();
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void take_pending_events_from(EventLoop& other)
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{
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m_queued_events.append(move(other.m_queued_events));
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}
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static void wake();
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private:
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void wait_for_event(WaitMode);
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void get_next_timer_expiration(timeval&);
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struct QueuedEvent {
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WeakPtr<Object> receiver;
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NonnullOwnPtr<Event> event;
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};
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Vector<QueuedEvent, 64> m_queued_events;
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bool m_exit_requested { false };
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int m_exit_code { 0 };
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static int s_wake_pipe_fds[2];
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LibThread::Lock m_lock;
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struct EventLoopTimer {
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int timer_id { 0 };
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int interval { 0 };
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timeval fire_time { 0, 0 };
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bool should_reload { false };
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TimerShouldFireWhenNotVisible fire_when_not_visible { TimerShouldFireWhenNotVisible::No };
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WeakPtr<Object> owner;
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void reload(const timeval& now);
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bool has_expired(const timeval& now) const;
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};
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static HashMap<int, NonnullOwnPtr<EventLoopTimer>>* s_timers;
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static HashTable<Notifier*>* s_notifiers;
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static RefPtr<LocalServer> s_rpc_server;
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};
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}
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