Athena::DebugAids Node1 Athena::DebugAids + stacktraceFd() + ATLAS_NOT_THREAD_SAFE() + coredump() + ATLAS_NOT_THREAD_SAFE() + ATLAS_NOT_THREAD_SAFE() + enableCoreFiles() + disableCoreFiles() Node2 std::atomic< IOFD > + ptr Node2->Node1 -s_stackTraceFd