DebugAids Node1 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