G4UA::VolumeDumper Node1 G4UA::VolumeDumper + VolumeDumper() + BeginOfEventAction() Node2 G4UserEventAction Node2->Node1 Node3 AthMessaging - m_msg_tls - ATLAS_THREAD_SAFE + AthMessaging() + AthMessaging() + ~AthMessaging() + msgLvl() + msg() + msg() + setLevel() - AthMessaging() - AthMessaging() - operator=() - initMessaging() Node3->Node1 Node4 std::atomic< IMessageSvc * > + ptr Node4->Node3 -m_imsg Node5 std::string Node5->Node3 -m_nm Node6 std::basic_string< char > Node6->Node5 Node7 std::atomic< MSG::Level > + ptr Node7->Node3 -m_lvl