Luna/kernel/include/memory/UserHeap.h

#pragma once
#include <stdint.h>

struct UserHeap
{
    bool init();

    uint64_t request_virtual_page();
    uint64_t request_virtual_pages(uint64_t count);

    void free_virtual_page(uint64_t address);
    void free_virtual_pages(uint64_t address, uint64_t count);

    void free();

    bool inherit(UserHeap& other);

  private:
    uint8_t* bitmap = nullptr;
    uint64_t bitmap_size = 0;
    uint64_t start_index = 0;
    bool bitmap_read(uint64_t index);
    void bitmap_set(uint64_t index, bool value);

    bool try_expand();
    bool try_expand_size(uint64_t size);
};