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https://github.com/SerenityOS/serenity
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8a0a3638f0
This device will be used by userspace to read mouse packets from all mouse devices that are attached to the machine. This change is a preparation before we can enable seamless hotplug capabilities in WindowServer for mouse devices, without any major change on the userspace side.
41 lines
1.2 KiB
C++
41 lines
1.2 KiB
C++
/*
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* Copyright (c) 2023, Liav A. <liavalb@hotmail.co.il>
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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/CircularQueue.h>
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#include <AK/Types.h>
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#include <Kernel/API/MousePacket.h>
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#include <Kernel/Devices/CharacterDevice.h>
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#include <Kernel/Security/Random.h>
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namespace Kernel {
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class AllMiceDevice final : public CharacterDevice {
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friend class DeviceManagement;
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public:
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static NonnullRefPtr<AllMiceDevice> must_create();
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virtual ~AllMiceDevice() override;
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void enqueue_mouse_packet(MousePacket packet);
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private:
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AllMiceDevice();
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// ^CharacterDevice
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virtual StringView class_name() const override { return "AllMiceDevice"sv; }
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virtual ErrorOr<size_t> read(OpenFileDescription&, u64, UserOrKernelBuffer&, size_t) override;
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virtual bool can_read(OpenFileDescription const&, u64) const override;
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virtual ErrorOr<size_t> write(OpenFileDescription&, u64, UserOrKernelBuffer const&, size_t) override { return EINVAL; }
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virtual bool can_write(OpenFileDescription const&, u64) const override { return true; }
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mutable Spinlock<LockRank::None> m_queue_lock {};
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CircularQueue<MousePacket, 1000> m_queue;
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};
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}
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