1 typedef boost::shared_ptr<A> APtr 2 class A 3 { 4 public: 5     void FunA() 6     { 7         m_pB->FunB1(APtr(this)); 8         m_pB->FunB2(this); 9     }10 11 private:12     B * m_pB;13 }14 15 class B16 {17     void FunB1(APtr pA);18     void FunB2(A * pA);19 }20 21 class Manager22 {23     vector<APtr> m_vecA;24 }