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79fa9765ca
We now use AK::Error and AK::ErrorOr<T> in both kernel and userspace! This was a slightly tedious refactoring that took a long time, so it's not unlikely that some bugs crept in. Nevertheless, it does pass basic functionality testing, and it's just real nice to finally see the same pattern in all contexts. :^)
41 lines
1.1 KiB
C++
41 lines
1.1 KiB
C++
/*
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* Copyright (c) 2018-2020, Andreas Kling <kling@serenityos.org>
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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/Vector.h>
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#include <Kernel/Devices/CharacterDevice.h>
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namespace Kernel {
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class ConsoleDevice final : public CharacterDevice {
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AK_MAKE_ETERNAL
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friend class DeviceManagement;
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public:
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static NonnullRefPtr<ConsoleDevice> must_create();
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virtual ~ConsoleDevice() override;
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// ^CharacterDevice
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virtual bool can_read(const Kernel::OpenFileDescription&, size_t) const override;
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virtual bool can_write(const Kernel::OpenFileDescription&, size_t) const override { return true; }
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virtual ErrorOr<size_t> read(OpenFileDescription&, u64, Kernel::UserOrKernelBuffer&, size_t) override;
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virtual ErrorOr<size_t> write(OpenFileDescription&, u64, const Kernel::UserOrKernelBuffer&, size_t) override;
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virtual StringView class_name() const override { return "Console"sv; }
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void put_char(char);
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const CircularQueue<char, 16384>& logbuffer() const { return m_logbuffer; }
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private:
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ConsoleDevice();
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CircularQueue<char, 16384> m_logbuffer;
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};
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}
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