Algorithm 5 OldCluster_CKPUpdate( )

DELETE_process(PLk, PS); //delete PS from PLk  NOTICE_DLChange(PS); //notice processes to change DL for (Px ∈ PS || Px ∈ PLk) do  REQUIRE_IntraCDG(Px); //send IntraCDG request  BUILD_IntraCDG(IntraCDGglobal); if (∃Edge(CKPa, CKPb) ∧ IntraCDGglobal) then  CHANGE_IntraCDG(IntraCDGj); //modify IntraCDGj  CHANGE_InterCDG(R_InterCDGk); if (∃Edge(CKPb, CKPa) ∧ IntraCDGglobal) then  CHANGE_IntraCDG(IntraCDGt);  CHANGE_InterCDG(S_InterCDGk);  BUILD_SubInterCDG(R_InterCDGk, S_InterCDGk, Pt);  //build subgraph related to Pt  SEND_SubInterCDG(CHi); //send subgraph to CHi  CHANGE_InterCDG(R_InterCDGk);  CHANGE_InterCDG(S_InterCDGk);