internal static void AddEventCounter(EventSource eventSource, EventCounter eventCounter)
{
int eventSourceIndex = EventListenerHelper.EventSourceIndex(eventSource);
EventCounterGroup.EnsureEventSourceIndexAvailable(eventSourceIndex);
EventCounterGroup eventCounterGroup = GetEventCounterGroup(eventSource);
eventCounterGroup.Add(eventCounter);
}
private static EventCounterGroup GetEventCounterGroup(EventSource eventSource)
{
int eventSourceIndex = EventListenerHelper.EventSourceIndex(eventSource);
EventCounterGroup result = EventCounterGroup.s_eventCounterGroups[eventSourceIndex];
if (result == null)
{
result = new EventCounterGroup(eventSource, eventSourceIndex);
EventCounterGroup.s_eventCounterGroups[eventSourceIndex] = result;
}
return(result);
}
private static void EnsureEventSourceIndexAvailable(int eventSourceIndex)
{
if (EventCounterGroup.s_eventCounterGroups == null)
{
EventCounterGroup.s_eventCounterGroups = new EventCounterGroup[eventSourceIndex + 1];
}
else if (eventSourceIndex >= EventCounterGroup.s_eventCounterGroups.Length)
{
EventCounterGroup[] newEventCounterGroups = new EventCounterGroup[eventSourceIndex + 1];
Array.Copy(EventCounterGroup.s_eventCounterGroups, 0, newEventCounterGroups, 0, EventCounterGroup.s_eventCounterGroups.Length);
EventCounterGroup.s_eventCounterGroups = newEventCounterGroups;
}
}
/// <summary>
/// Initializes a new instance of the <see cref="EventCounter"/> class.
/// </summary>
/// <param name="name">The name.</param>
/// <param name="eventSource">The event source.</param>
public EventCounter(string name, EventSource eventSource)
{
if (name == null)
{
throw new ArgumentNullException(nameof(name));
}
if (eventSource == null)
{
throw new ArgumentNullException(nameof(eventSource));
}
InitializeBuffer();
_name = name;
EventCounterGroup.AddEventCounter(eventSource, this);
}
internal static EventCounterGroup GetEventCounterGroup(EventSource eventSource)
{
lock (s_eventCounterGroupsLock)
{
int eventSourceIndex = EventListener.EventSourceIndex(eventSource);
EnsureEventSourceIndexAvailable(eventSourceIndex);
WeakReference <EventCounterGroup> weakRef = EventCounterGroup.s_eventCounterGroups[eventSourceIndex];
EventCounterGroup ret = null;
if (weakRef == null || !weakRef.TryGetTarget(out ret))
{
ret = new EventCounterGroup(eventSource);
EventCounterGroup.s_eventCounterGroups[eventSourceIndex] = new WeakReference <EventCounterGroup>(ret);
}
return(ret);
}
}
/// <summary>
/// Initializes a new instance of the <see cref="EventCounter"/> class.
/// EVentCounters live as long as the EventSource that they are attached to unless they are
/// explicitly Disposed.
/// </summary>
/// <param name="name">The name.</param>
/// <param name="eventSource">The event source.</param>
public EventCounter(string name, EventSource eventSource)
{
if (name == null)
{
throw new ArgumentNullException(nameof(name));
}
if (eventSource == null)
{
throw new ArgumentNullException(nameof(eventSource));
}
InitializeBuffer();
_name = name;
_group = EventCounterGroup.GetEventCounterGroup(eventSource);
_group.Add(this);
_min = float.PositiveInfinity;
_max = float.NegativeInfinity;
}