f407ve_hs_uart/lib/singleton.h
2019-11-08 14:11:08 +01:00

26 lines
607 B
C++

#ifndef SINGLETON_H_
#define SINGLETON_H_
#include <utility>
template<typename T> class Singleton {
public:
static T &Instance() { return *m_instance; }
template<typename ... Args>
static T &Init(Args &&... args)
{
static T instance{ std::forward<Args>(args)... };
m_instance = &instance;
return instance;
}
protected:
Singleton() = default;
Singleton(const Singleton &) = delete;
Singleton &operator=(const Singleton &) = delete;
static T *m_instance;
};
template<typename T> T* Singleton<T>::m_instance = nullptr;
#endif /* SINGLETON_H_ */