Thank you Mindtraveller and Mirek

In summary, could a general all purpose thread safe class be like this?

template <class T>
class ThreadSafe {
public:
	ThreadSafe() 		{}
	ThreadSafe(T v) 	{val = v;}
	void operator=(T v) {
		mutex.EnterWrite();
		val = v;
		mutex.LeaveWrite();
	}
	operator T() {
		T tmp;
		mutex.EnterRead();
		tmp = val;
		mutex.LeaveRead();
		return tmp;
	}
	operator++()....
   
private:
	volatile T val;
	RWMutex mutex;
};