OnContentionStop.cs

private void OnContentionStop(ContentionTraceData data)
{
    ContentionInfo info = _contentionStore.GetContentionInfo(data.ProcessID, data.ThreadID);
    if (info == null)
        return;

    // unlucky case when we start to listen just after the ContentionStart event
    if (info.ContentionStartRelativeMSec == 0)
        return;

    var contentionDurationMSec = data.TimeStampRelativeMSec - info.ContentionStartRelativeMSec;
    var isManaged = (data.ContentionFlags == ContentionFlags.Managed);
}