internal static CounterGroup GetCounterGroup(EventSource eventSource)
{
lock (s_counterGroupLock)
{
int eventSourceIndex = EventListener.EventSourceIndex(eventSource);
EnsureEventSourceIndexAvailable(eventSourceIndex);
Debug.Assert(s_counterGroups != null);
WeakReference <CounterGroup> weakRef = CounterGroup.s_counterGroups[eventSourceIndex];
if (weakRef == null || !weakRef.TryGetTarget(out CounterGroup? ret))
{
ret = new CounterGroup(eventSource);
CounterGroup.s_counterGroups[eventSourceIndex] = new WeakReference <CounterGroup>(ret);
}
return(ret);
}
}
