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d67553e128
If a file descriptor is being closed, we need to permanently disable any Notifier and remove it from the event loop. This method removes the notifier and disables it so that the EventLoop does not use a invalid file descriptor.
76 lines
2.3 KiB
C++
76 lines
2.3 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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#include <AK/Badge.h>
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#include <LibCore/Event.h>
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#include <LibCore/EventLoop.h>
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#include <LibCore/Notifier.h>
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namespace Core {
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Notifier::Notifier(int fd, unsigned event_mask, Object* parent)
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: Object(parent)
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, m_fd(fd)
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, m_event_mask(event_mask)
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{
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set_enabled(true);
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}
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Notifier::~Notifier()
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{
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set_enabled(false);
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}
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void Notifier::set_enabled(bool enabled)
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{
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if (m_fd < 0)
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return;
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if (enabled)
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Core::EventLoop::register_notifier({}, *this);
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else
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Core::EventLoop::unregister_notifier({}, *this);
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}
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void Notifier::close()
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{
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if (m_fd < 0)
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return;
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set_enabled(false);
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m_fd = -1;
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}
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void Notifier::event(Core::Event& event)
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{
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if (event.type() == Core::Event::NotifierRead && on_ready_to_read) {
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on_ready_to_read();
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} else if (event.type() == Core::Event::NotifierWrite && on_ready_to_write) {
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on_ready_to_write();
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} else {
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Object::event(event);
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}
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}
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}
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