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ladybird/Libraries/LibCore/Notifier.h

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Meta: Add license header to source files As suggested by Joshua, this commit adds the 2-clause BSD license as a comment block to the top of every source file. For the first pass, I've just added myself for simplicity. I encourage everyone to add themselves as copyright holders of any file they've added or modified in some significant way. If I've added myself in error somewhere, feel free to replace it with the appropriate copyright holder instead. Going forward, all new source files should include a license header.
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/*
Meta: Update my e-mail address everywhere
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* Copyright (c) 2018-2023, Andreas Kling <andreas@ladybird.org>
Meta: Add license header to source files As suggested by Joshua, this commit adds the 2-clause BSD license as a comment block to the top of every source file. For the first pass, I've just added myself for simplicity. I encourage everyone to add themselves as copyright holders of any file they've added or modified in some significant way. If I've added myself in error somewhere, feel free to replace it with the appropriate copyright holder instead. Going forward, all new source files should include a license header.
2020-01-18 08:38:21 +00:00
*
Everything: Move to SPDX license identifiers in all files. SPDX License Identifiers are a more compact / standardized way of representing file license information. See: https://spdx.dev/resources/use/#identifiers This was done with the `ambr` search and replace tool. ambr --no-parent-ignore --key-from-file --rep-from-file key.txt rep.txt *
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* SPDX-License-Identifier: BSD-2-Clause
Meta: Add license header to source files As suggested by Joshua, this commit adds the 2-clause BSD license as a comment block to the top of every source file. For the first pass, I've just added myself for simplicity. I encourage everyone to add themselves as copyright holders of any file they've added or modified in some significant way. If I've added myself in error somewhere, feel free to replace it with the appropriate copyright holder instead. Going forward, all new source files should include a license header.
2020-01-18 08:38:21 +00:00
*/
Port Terminal to LibGUI. To facilitate listening for action on arbitrary file descriptors, I've added a GNotifier class. It's quite simple but very useful: GNotifier notifier(fd, GNotifier::Read); notifier.on_ready_to_read = [this] (GNotifier& fd) { // read from fd or whatever else you like :^) }; The callback will get invoked by GEventLoop when select() says we have something to read on the fd.
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#pragma once
#include <AK/Function.h>
LibCore: Allow listening for multiple conditions using a single Notifier While on it, implement currently unused Notifier::set_type correctly (but not efficiently) by re-registering Notifier in the EventLoop.
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#include <LibCore/Event.h>
Userland: Rename Core::Object to Core::EventReceiver This is a more precise description of what this class actually does.
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#include <LibCore/EventReceiver.h>
LibCore: Port EventLoop to Windows
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#include <pthread.h>
Port Terminal to LibGUI. To facilitate listening for action on arbitrary file descriptors, I've added a GNotifier class. It's quite simple but very useful: GNotifier notifier(fd, GNotifier::Read); notifier.on_ready_to_read = [this] (GNotifier& fd) { // read from fd or whatever else you like :^) }; The callback will get invoked by GEventLoop when select() says we have something to read on the fd.
2019-02-10 13:28:39 +00:00
LibCore: Put all classes in the Core namespace and remove the leading C 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.
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namespace Core {
Userland: Rename Core::Object to Core::EventReceiver This is a more precise description of what this class actually does.
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class Notifier final : public EventReceiver {
LibCore: Simplify Core::Notifier by only allowing one event type Not a single client of this API actually used the event mask feature to listen for readability AND writability. Let's simplify the API and have only one hook: on_activation.
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C_OBJECT(Notifier);
Port Terminal to LibGUI. To facilitate listening for action on arbitrary file descriptors, I've added a GNotifier class. It's quite simple but very useful: GNotifier notifier(fd, GNotifier::Read); notifier.on_ready_to_read = [this] (GNotifier& fd) { // read from fd or whatever else you like :^) }; The callback will get invoked by GEventLoop when select() says we have something to read on the fd.
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public:
LibCore: Allow listening for multiple conditions using a single Notifier While on it, implement currently unused Notifier::set_type correctly (but not efficiently) by re-registering Notifier in the EventLoop.
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using Type = NotificationType;
LibCore: Convert CNotifier to ObjectPtr
2019-09-20 13:39:15 +00:00
LibCore: Put all classes in the Core namespace and remove the leading C 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.
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virtual ~Notifier() override;
Port Terminal to LibGUI. To facilitate listening for action on arbitrary file descriptors, I've added a GNotifier class. It's quite simple but very useful: GNotifier notifier(fd, GNotifier::Read); notifier.on_ready_to_read = [this] (GNotifier& fd) { // read from fd or whatever else you like :^) }; The callback will get invoked by GEventLoop when select() says we have something to read on the fd.
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CNotifier: Provide a way to unregister a notifier temporarily
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void set_enabled(bool);
LibCore: Simplify Core::Notifier by only allowing one event type Not a single client of this API actually used the event mask feature to listen for readability AND writability. Let's simplify the API and have only one hook: on_activation.
2023-04-23 18:59:32 +00:00
Function<void()> on_activation;
Port Terminal to LibGUI. To facilitate listening for action on arbitrary file descriptors, I've added a GNotifier class. It's quite simple but very useful: GNotifier notifier(fd, GNotifier::Read); notifier.on_ready_to_read = [this] (GNotifier& fd) { // read from fd or whatever else you like :^) }; The callback will get invoked by GEventLoop when select() says we have something to read on the fd.
2019-02-10 13:28:39 +00:00
LibCore: Add Notifier::close 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.
2020-09-16 15:42:59 +00:00
void close();
Port Terminal to LibGUI. To facilitate listening for action on arbitrary file descriptors, I've added a GNotifier class. It's quite simple but very useful: GNotifier notifier(fd, GNotifier::Read); notifier.on_ready_to_read = [this] (GNotifier& fd) { // read from fd or whatever else you like :^) }; The callback will get invoked by GEventLoop when select() says we have something to read on the fd.
2019-02-10 13:28:39 +00:00
int fd() const { return m_fd; }
LibCore: Simplify Core::Notifier by only allowing one event type Not a single client of this API actually used the event mask feature to listen for readability AND writability. Let's simplify the API and have only one hook: on_activation.
2023-04-23 18:59:32 +00:00
Type type() const { return m_type; }
LibCore: Allow listening for multiple conditions using a single Notifier While on it, implement currently unused Notifier::set_type correctly (but not efficiently) by re-registering Notifier in the EventLoop.
2024-02-02 01:21:15 +00:00
void set_type(Type type);
Port Terminal to LibGUI. To facilitate listening for action on arbitrary file descriptors, I've added a GNotifier class. It's quite simple but very useful: GNotifier notifier(fd, GNotifier::Read); notifier.on_ready_to_read = [this] (GNotifier& fd) { // read from fd or whatever else you like :^) }; The callback will get invoked by GEventLoop when select() says we have something to read on the fd.
2019-02-10 13:28:39 +00:00
LibCore: Put all classes in the Core namespace and remove the leading C 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.
2020-02-02 11:34:39 +00:00
void event(Core::Event&) override;
CNotifier: Turn into a CObject and Use the event queue to deliver events This way, CNotifier can mutate state to its little heart's content without destroying the world when the global CNotifier hash changes during delivery.
2019-07-16 18:31:14 +00:00
LibCore: Make Timers and Notifiers aware of threads Previously sharing a Timer/Notifier between threads (or just handing its ownership to another thread) lead to a crash as they are thread-specific. This commit makes it so we can handle mutation (i.e. just deletion or unregistering) in a thread-safe and lockfree manner.
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void set_owner_thread(pthread_t owner_thread) { m_owner_thread = owner_thread; }
pthread_t owner_thread() const { return m_owner_thread; }
Port Terminal to LibGUI. To facilitate listening for action on arbitrary file descriptors, I've added a GNotifier class. It's quite simple but very useful: GNotifier notifier(fd, GNotifier::Read); notifier.on_ready_to_read = [this] (GNotifier& fd) { // read from fd or whatever else you like :^) }; The callback will get invoked by GEventLoop when select() says we have something to read on the fd.
2019-02-10 13:28:39 +00:00
private:
Userland: Rename Core::Object to Core::EventReceiver This is a more precise description of what this class actually does.
2023-08-06 16:09:39 +00:00
Notifier(int fd, Type type, EventReceiver* parent = nullptr);
LibCore: Convert CNotifier to ObjectPtr
2019-09-20 13:39:15 +00:00
Port Terminal to LibGUI. To facilitate listening for action on arbitrary file descriptors, I've added a GNotifier class. It's quite simple but very useful: GNotifier notifier(fd, GNotifier::Read); notifier.on_ready_to_read = [this] (GNotifier& fd) { // read from fd or whatever else you like :^) }; The callback will get invoked by GEventLoop when select() says we have something to read on the fd.
2019-02-10 13:28:39 +00:00
int m_fd { -1 };
LibCore: Allow listening for multiple conditions using a single Notifier While on it, implement currently unused Notifier::set_type correctly (but not efficiently) by re-registering Notifier in the EventLoop.
2024-02-02 01:21:15 +00:00
bool m_is_enabled { false };
LibCore: Make Timers and Notifiers aware of threads Previously sharing a Timer/Notifier between threads (or just handing its ownership to another thread) lead to a crash as they are thread-specific. This commit makes it so we can handle mutation (i.e. just deletion or unregistering) in a thread-safe and lockfree manner.
2024-05-08 18:10:00 +00:00
pthread_t m_owner_thread { 0 };
LibCore: Simplify Core::Notifier by only allowing one event type Not a single client of this API actually used the event mask feature to listen for readability AND writability. Let's simplify the API and have only one hook: on_activation.
2023-04-23 18:59:32 +00:00
Type m_type { Type::None };
Port Terminal to LibGUI. To facilitate listening for action on arbitrary file descriptors, I've added a GNotifier class. It's quite simple but very useful: GNotifier notifier(fd, GNotifier::Read); notifier.on_ready_to_read = [this] (GNotifier& fd) { // read from fd or whatever else you like :^) }; The callback will get invoked by GEventLoop when select() says we have something to read on the fd.
2019-02-10 13:28:39 +00:00
};
LibCore: Put all classes in the Core namespace and remove the leading C 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.
2020-02-02 11:34:39 +00:00
}
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