/// <summary>Adds the counter to the set that the EventSource will report on.</summary>
/// <remarks>
/// Must only be invoked once, and only after the instance has been fully initialized.
/// This should be invoked by a derived type's ctor as the last thing it does.
/// </remarks>
private protected void Publish()
{
Debug.Assert(_group is null);
Debug.Assert(Name != null);
Debug.Assert(EventSource != null);
_group = CounterGroup.GetCounterGroup(EventSource);
_group.Add(this);
}
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);
}
}
