docs: public void inactivateSubProcess(String spPid) {
  		synchronized (fileList) {		// always lock fileList first to avoid deadlock
  			synchronized(activeFilesMap) {		// Right into sync block because 99% case is that map contains pid
  				activeFilesMap.remove(spPid) ;
  			}
  		}
  		if (debugLogger.isLoggable(Level.FINE) && LogRepositoryBaseImpl.isDebugEnabled()) {
  			debugLogger.logp(Level.FINE, thisClass, "inactivateSubProcess", "Inactivated pid: "+spPid) ;
  		}
  	}