forked from Bananymous/banan-os
59 lines
1.2 KiB
C++
59 lines
1.2 KiB
C++
#pragma once
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#include <BAN/UniqPtr.h>
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#include <kernel/Memory/PageTable.h>
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#include <kernel/Memory/Types.h>
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#include <stddef.h>
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namespace Kernel
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{
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struct AddressRange
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{
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vaddr_t start;
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vaddr_t end;
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};
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class MemoryRegion
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{
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BAN_NON_COPYABLE(MemoryRegion);
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BAN_NON_MOVABLE(MemoryRegion);
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public:
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enum Type : uint8_t
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{
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PRIVATE,
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SHARED
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};
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public:
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virtual ~MemoryRegion();
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bool contains(vaddr_t address) const;
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bool contains_fully(vaddr_t address, size_t size) const;
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bool overlaps(vaddr_t address, size_t size) const;
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size_t size() const { return m_size; }
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vaddr_t vaddr() const { return m_vaddr; }
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// Returns error if no memory was available
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// Returns true if page was succesfully allocated
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// Returns false if page was already allocated
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virtual BAN::ErrorOr<bool> allocate_page_containing(vaddr_t address) = 0;
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virtual BAN::ErrorOr<BAN::UniqPtr<MemoryRegion>> clone(PageTable& new_page_table) = 0;
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protected:
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MemoryRegion(PageTable&, size_t size, Type type, PageTable::flags_t flags);
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BAN::ErrorOr<void> initialize(AddressRange);
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protected:
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PageTable& m_page_table;
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const size_t m_size;
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const Type m_type;
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const PageTable::flags_t m_flags;
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vaddr_t m_vaddr { 0 };
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};
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} |