#pragma once

class MemoryInfo
{
private:
    struct MEM_INFO
    {
        unsigned int total;
        unsigned int free;
        unsigned int buffers;
        unsigned int cached;
        unsigned int swap_cached;
        unsigned int swap_total;
        unsigned int swap_free;
        unsigned int available;
    };
    typedef struct MEM_INFO Mem_info;
    MemoryInfo(/* args */);
    ~MemoryInfo(){}
    MemoryInfo& operator=(const MemoryInfo &);
    void getMemInfo(Mem_info& info);
public:
    static MemoryInfo* GetInstance();
    float GetMemoryUsed();
private:
    class Garbo
    {
    private:
    public:
        ~Garbo()
        {
            if(MemoryInfo::m_pInstance!=nullptr)
            {
                delete MemoryInfo::m_pInstance;
                MemoryInfo::m_pInstance=nullptr;
            }
        }
    };
    static MemoryInfo* m_pInstance;
    static Garbo garbo;
};