GetQueueUserWorkItemCallback.cs

private ThreadPoolItem GetQueueUserWorkItemCallback(dynamic element)
{
    ThreadPoolItem tpi = new ThreadPoolItem()
    {
        Address = (ulong)element,
        Type = ThreadRoot.WorkItem
    };

    // look for the callback given to ThreadPool.QueueUserWorkItem()
    var callback = element.callback;
    if (callback == null)
    {
        tpi.MethodName = "[no callback]";
        return tpi;
    }

    var target = callback._target;
    if (target == null)
    {
        tpi.MethodName = "[no callback target]";
        return tpi;
    }

    ClrType targetType = target.GetClrType();
    if (targetType == null)
    {
        tpi.MethodName = $" [target=0x{(ulong)target}]";
    }
    else
    {
        // look for method name
        tpi.MethodName = BuildDelegateMethodName(targetType, callback);
    }

    return tpi;
}