internal void Invalidate()
{
// Keep next or prev unless this is the last or first node, respectively.
// That way a read loop may continue to loop to the next (or prev) item
// even if this one got deleted.
this.list = null;
}
internal ActiveListNode(ActiveList <T> list, T value)
{
if (list == null)
{
throw new InvalidOperationException("list");
}
this.list = list;
item = value;
}
private void Register(LatencyMetric metric, out LatencyMetric previous)
{
ActiveList <LatencyMetric> list;
lock ( listMapLocker) {
if (!listMap.TryGetValue(metric.Symbol, out list))
{
list = new ActiveList <LatencyMetric>();
listMap[metric.Symbol] = list;
}
previous = list.Count > 0 ? list.Last.Value : null;
list.AddLast(metric);
}
}