[Boost-users] boost::shared_ptr question

31 Dec 2007

      Hi,

i do have the following situation

3 independent classes A, B and C with the following requirements:

1.

class A {
private:
	A(int);
	~A();

	class deleter_t{
	public:
	void operator()(A* p) { delete p; }
	};
	friend class deleter_t;

public:
	shared_ptr<A> create(int i) {
	return boost::shared_ptr<A>(new A(i),deleter_t());
	}
};

class B {
	boost::shared<A> obj_;
};

class C {
	boost::shared_ptr<B> b_;
	boost::shared_ptr<A> a_;
};

2.
Class C instantiates A and gets a boost::shared_ptr<A> through A::create
Class B just need a boost::shared_ptr<A>.

3.
C first release B and then A

Now my question how can i achieve that goal, when A MUST obey to the singleton
pattern?

Thanks in advance for any help

Cheers
Michael

[Boost-users] boost::shared_ptr question

Michael Bradley Jr