/// <summary>
/// Thread-safe version of Queue.Enqueue(T).
/// </summary>
/// <param name="element">Object to enqueue.</param>
public void Enqueue(T element)
{
bool wakeup = false;
lock (_queueLock)
{
_queue.Enqueue(element);
if (_queue.Count == 1)
{
wakeup = true;
}
}
if (wakeup && _node != null)
{
_node.WakeUp();
}
}