Thread-safe initialization of m_spectrometerEntrance
Using std::call_once to add thread-safety, although the class as a whole is not yet thread-safe.
Edited by Pascal Boeschoten
GitLab jobs artifacts no longer stored forever as of Monday, November 4th 08:30h. Further information under https://cern.ch/otg0152576
Using std::call_once to add thread-safety, although the class as a whole is not yet thread-safe.