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https://github.com/SerenityOS/serenity.git
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Sönke Holz
25538bf0f0
This will allow turning this class into a templated base class. Don't move expand_to_page_boundaries() inline since it will only be implemented by one subclass. Additionally, this function uses page_round_up() from MemoryManager.h. Including this header in VirtualRange.h would result in a circular include.
24 lines
606 B
C++
24 lines
606 B
C++
/*
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* Copyright (c) 2018-2021, Andreas Kling <[email protected]>
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* Copyright (c) 2021, Leon Albrecht <[email protected]>
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*
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* SPDX-License-Identifier: BSD-2-Clause
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*/
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#include <Kernel/Memory/MemoryManager.h>
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#include <Kernel/Memory/VirtualRange.h>
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namespace Kernel::Memory {
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ErrorOr<VirtualRange> VirtualRange::expand_to_page_boundaries(FlatPtr address, size_t size)
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{
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if ((address + size) < address)
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return EINVAL;
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auto base = VirtualAddress { address }.page_base();
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auto end = TRY(page_round_up(address + size));
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return VirtualRange { base, end - base.get() };
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}
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}
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