C++ Generic - Thread Safe - Singleton

singleton.h

#ifndef SINGLETON_H

#define SINGLETON_H

template <typename T>

class Singleton

{

public:

    static T& GetInstance(){

        static T instance;

        return instance;

    }

private:

    Singleton() = default;

    ~Singleton() = default;

    Singleton(const Singleton&) = delete;

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

    Singleton(Singleton&&) = delete;

    Singleton& operator=(Singleton&&) = delete;

};

#endif // SINGLETON_H

How to use?

Singleton<LogManager>::GetInstance()

.info(this->metaObject()->className(),

Q_FUNC_INFO, "Initialized", 

false, 

false);

info is my method...