53 lines
1.0 KiB
C++
53 lines
1.0 KiB
C++
#pragma once
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#include <kernel/Memory/Types.h>
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#include <stddef.h>
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#include <stdint.h>
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namespace Kernel
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{
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class PhysicalRange
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{
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public:
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PhysicalRange(paddr_t, size_t);
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paddr_t reserve_page();
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void release_page(paddr_t);
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paddr_t start() const { return m_paddr; }
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paddr_t end() const { return m_paddr + m_size; }
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bool contains(paddr_t addr) const { return m_paddr <= addr && addr < m_paddr + m_size; }
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size_t usable_memory() const { return m_reservable_pages * PAGE_SIZE; }
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size_t used_pages() const { return m_used_pages; }
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size_t free_pages() const { return m_free_pages; }
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private:
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struct node
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{
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node* next;
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node* prev;
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};
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paddr_t page_address(const node*) const;
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node* node_address(paddr_t) const;
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private:
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paddr_t m_paddr { 0 };
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vaddr_t m_vaddr { 0 };
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size_t m_size { 0 };
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uint64_t m_total_pages { 0 };
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uint64_t m_reservable_pages { 0 };
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uint64_t m_list_pages { 0 };
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size_t m_used_pages { 0 };
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size_t m_free_pages { 0 };
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node* m_free_list { nullptr };
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node* m_used_list { nullptr };
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};
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} |