mirror of
https://github.com/RGBCube/serenity
synced 2025-05-16 08:34:58 +00:00
b02ee664e7
To do this we also need to get rid of LockRefPtrs in the USB code as well. Most of the SysFS nodes are statically generated during boot and are not mutated afterwards. The same goes for general device code - once we generate the appropriate SysFS nodes, we almost never mutate the node pointers afterwards, making locking unnecessary.
40 lines
1.2 KiB
C++
40 lines
1.2 KiB
C++
/*
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* Copyright (c) 2021-2022, 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 <Kernel/Bus/USB/USBDevice.h>
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#include <Kernel/FileSystem/SysFS/Component.h>
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#include <Kernel/KBufferBuilder.h>
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#include <Kernel/KString.h>
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#include <Kernel/Locking/Mutex.h>
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namespace Kernel {
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class SysFSUSBDeviceInformation : public SysFSComponent {
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friend class SysFSUSBBusDirectory;
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public:
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virtual ~SysFSUSBDeviceInformation() override;
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static ErrorOr<NonnullRefPtr<SysFSUSBDeviceInformation>> create(USB::Device&);
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virtual StringView name() const override { return m_device_name->view(); }
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protected:
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SysFSUSBDeviceInformation(NonnullOwnPtr<KString> device_name, USB::Device& device);
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virtual ErrorOr<size_t> read_bytes(off_t offset, size_t count, UserOrKernelBuffer& buffer, OpenFileDescription*) const override;
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NonnullRefPtr<USB::Device> m_device;
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private:
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ErrorOr<void> try_generate(KBufferBuilder&);
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virtual ErrorOr<void> refresh_data(OpenFileDescription& description) const override;
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mutable Mutex m_lock { "SysFSUSBDeviceInformation"sv };
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NonnullOwnPtr<KString> m_device_name;
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};
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}
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