generallib/obj/inc/signleton.h

32 lines
665 B
C++

//
// Created by 29019 on 2019/12/17.
//
#ifndef GENERAL_SIGNLETON_H
#define GENERAL_SIGNLETON_H
#include <memory>
#include <vector>
using namespace std;
template <typename T> class Singletone
{
public:
static Singletone<T> Instance(){
if(mInstance.get() == nullptr){
mInstance = std::unique_ptr<T>();
}
return mInstance;
}
private:
Singletone<T>(){};
~Singletone<T>(){};
Singletone &operator=(const Singletone&){};
static unique_ptr<T> mInstance;
};
#define DECLARE_SINGLETON(type) \
friend class unique_ptr<type> mInstacnePtr; \
friend class Singletone<type> ;
#endif //GENERAL_SIGNLETON_H