clibparser/cmem.h at master · bajdcc/clibparser · GitHub

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//
// Project: clibparser
// Created by bajdcc
//

#ifndef CLIBPARSER_CMEM_H
#define CLIBPARSER_CMEM_H

#include <vector>
#include <map>
#include "types.h"

#define MAX_PAGE_PER_PROCESS 64

namespace clib {

    class imem {
    public:
        virtual void map_page(uint32_t addr, uint32_t id) = 0;
    };

    class cmem {
    public:
        explicit cmem(imem *m);

        cmem(const cmem &) = delete;
        cmem &operator=(const cmem &) = delete;

        uint32_t alloc(uint32_t size);
        uint32_t free(uint32_t addr);
        int page_size() const;

        void copy_from(const cmem &mem);

    private:
        uint32_t new_page(uint32_t size);
        uint32_t new_page_single();
        uint32_t new_page_all(uint32_t size);

        void error(const string_t &) const;
        void dump() const;
        void check() const;

    private:
        std::vector<std::vector<byte>> memory;
        std::vector<uint32_t> memory_page;
        std::map<uint32_t, uint32_t> memory_free;
        std::map<uint32_t, uint32_t> memory_used;
        size_t available_size{0};
        imem *m{nullptr};
    };
}

#endif //CLIBPARSER_CMEM_H