public static void Start(string itemId)
{
EnsureUpdatedState();
//obtain a list of items to check in/add to
List<ProfilerItem> lookupList = _currentlyMeasuringItem == null ? _currentState : _currentlyMeasuringItem.Children;
//get an existing item
ProfilerItem item = lookupList.Find(lookupItem => lookupItem.Id == itemId);
//the collection does not yet contain this item -> create it
if (item == null)
{
//create a new item
item = new ProfilerItem(itemId, _stopwatch, _currentlyMeasuringItem);
//add reference to newly created child to parent (or state)
if (_currentlyMeasuringItem == null)
_currentState.Add(item);
else
_currentlyMeasuringItem.Children.Add(item);
}
//start measurement on item
item.Start();
//set is at last started measurement
_currentlyMeasuringItem = item;
}
/// <summary>
/// Stops the most recently initiated measurement.
/// </summary>
public static void Stop()
{
EnsureUpdatedState();
//stop the currently measuring item and ascend it (or set to null if top)
if (_currentlyMeasuringItem != null)
{
_currentlyMeasuringItem.Stop();
_currentlyMeasuringItem = _currentlyMeasuringItem.Parent;
}
}
internal ProfilerItem(string id, Stopwatch stopwatch, ProfilerItem parent = null)
{
Id = id;
_stopwatch = stopwatch;
Parent = parent;
}