• Object_Group_File_Guard : TAO::PG_Object_Group_Storable
• PG_Group_List_Store_File_Guard : TAO::PG_Group_List_Store
• TAO_GOA : PortableGroup_Request_Dispatcher
• TAO_PG::UIPMC_Recv_Packet_Cleanup_Guard : TAO_UIPMC_Mcast_Transport