i_mmu.h

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#pragma once
 
#include <cstddef>
 
#include "contur/core/error.h"
#include "contur/core/types.h"
 
#include "contur/arch/block.h"
 
namespace contur {

    class IMMU
    {
        public:
        virtual ~IMMU() = default;

        [[nodiscard]] virtual Result<Block> read(ProcessId processId, MemoryAddress virtualAddress) const = 0;

        [[nodiscard]] virtual Result<void>
        write(ProcessId processId, MemoryAddress virtualAddress, const Block &block) = 0;

        [[nodiscard]] virtual Result<MemoryAddress> allocate(ProcessId processId, std::size_t pageCount) = 0;

        [[nodiscard]] virtual Result<void> deallocate(ProcessId processId) = 0;

        [[nodiscard]] virtual Result<void> swapIn(ProcessId processId, MemoryAddress virtualAddress) = 0;

        [[nodiscard]] virtual Result<void> swapOut(ProcessId processId, MemoryAddress virtualAddress) = 0;

        [[nodiscard]] virtual std::size_t totalFrames() const noexcept = 0;

        [[nodiscard]] virtual std::size_t freeFrames() const noexcept = 0;
    };
 
} // namespace contur