class PteBase {
protected:
	struct Prec {
		PteBase *ptr;
		Atomic   n;
	};
	
	virtual void OnPrecDelete() {};
	
	volatile Prec  *prec;

	Prec           *PtrAdd();
	static void     PtrRelease(Prec *prec);
	static Prec    *PtrAdd(const Uuid& uuid);
	
	PteBase();
	~PteBase();

	friend class PtrBase;
};

void PteBase::PtrRelease(Prec *prec){
	CriticalSection::Lock __(sPteLock);
	if(prec && --prec->n == 0){
		if(prec->ptr){
			prec->ptr->prec = NULL;
			prec->ptr->OnPrecDelete();
		}
		delete prec;
		prec = NULL;
	}
}

#include <Core/Core.h>

using namespace Upp;

struct Foo : public Pte<Foo> {
	String text;
	~Foo();
protected:
	virtual void OnPrecDelete(){delete (Foo*)this;}
};

Foo::~Foo(){
	Cout() << "deleted " << (void*)(this) << "\n";
}

Foo* factory(){
	return new Foo;
}

CONSOLE_APP_MAIN
{
	Ptr<Foo> ptr;
	{
		Ptr<Foo> ptr1 = new Foo;
		ptr1->text = "Text";
		ptr = ptr1;
		Cout() << (void*)~ptr << " -> " << ptr->text << "\n";
	}
	Cout() << "-------------\n";
	Cout() << (void*)~ptr << "\n";
	ptr = factory();
	ptr = factory();
}