115 lines
2.7 KiB
C++
115 lines
2.7 KiB
C++
#pragma once
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#include <BAN/ByteSpan.h>
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#include <kernel/Device/Device.h>
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#include <kernel/ThreadBlocker.h>
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namespace Kernel
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{
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class InputDevice : public CharacterDevice, public BAN::Weakable<InputDevice>
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{
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public:
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enum class Type
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{
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Mouse,
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Keyboard,
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};
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public:
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InputDevice(Type type);
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BAN::StringView name() const final override { return m_name; }
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dev_t rdev() const final override { return m_rdev; }
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protected:
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void add_event(BAN::ConstByteSpan);
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BAN::ErrorOr<size_t> read_impl(off_t, BAN::ByteSpan) override;
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bool can_read_impl() const override { SpinLockGuard _(m_event_lock); return m_event_count > 0; }
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bool can_write_impl() const override { return false; }
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bool has_error_impl() const override { return false; }
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private:
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BAN::ErrorOr<size_t> read_non_block(BAN::ByteSpan);
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private:
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const dev_t m_rdev;
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const BAN::String m_name;
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const Type m_type;
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mutable SpinLock m_event_lock;
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ThreadBlocker m_event_thread_blocker;
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static constexpr size_t m_max_event_count { 128 };
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BAN::Vector<uint8_t> m_event_buffer;
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const size_t m_event_size;
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size_t m_event_tail { 0 };
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size_t m_event_head { 0 };
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size_t m_event_count { 0 };
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friend class KeyboardDevice;
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friend class MouseDevice;
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};
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class KeyboardDevice : public CharacterDevice
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{
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public:
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static BAN::ErrorOr<BAN::RefPtr<KeyboardDevice>> create(mode_t mode, uid_t uid, gid_t gid);
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void notify() { m_thread_blocker.unblock(); }
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private:
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KeyboardDevice(mode_t mode, uid_t uid, gid_t gid);
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BAN::ErrorOr<size_t> read_impl(off_t, BAN::ByteSpan) override;
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bool can_read_impl() const override;
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bool can_write_impl() const override { return false; }
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bool has_error_impl() const override { return false; }
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BAN::StringView name() const final override { return m_name; }
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dev_t rdev() const final override { return m_rdev; }
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private:
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const dev_t m_rdev;
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const BAN::StringView m_name;
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ThreadBlocker m_thread_blocker;
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friend class BAN::RefPtr<KeyboardDevice>;
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};
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class MouseDevice : public CharacterDevice
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{
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public:
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static BAN::ErrorOr<BAN::RefPtr<MouseDevice>> create(mode_t mode, uid_t uid, gid_t gid);
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void notify() { m_thread_blocker.unblock(); }
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private:
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MouseDevice(mode_t mode, uid_t uid, gid_t gid);
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BAN::ErrorOr<size_t> read_impl(off_t, BAN::ByteSpan) override;
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bool can_read_impl() const override;
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bool can_write_impl() const override { return false; }
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bool has_error_impl() const override { return false; }
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BAN::StringView name() const final override { return m_name; }
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dev_t rdev() const final override { return m_rdev; }
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private:
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const dev_t m_rdev;
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const BAN::StringView m_name;
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ThreadBlocker m_thread_blocker;
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friend class BAN::RefPtr<MouseDevice>;
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};
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}
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