private void Dequeue()
{
if (_head == null)
{
throw new InvalidOperationException("Can not dequeue from empty queue.");
}
_head = _head.Next;
if (_head == null)
{
_tail = null;
}
}
public void Enqueue(Action value)
{
if (IsEmpty)
{
_tail = _head = new CleanupAction {
Method = value, Next = null
};
}
else
{
var item = new CleanupAction {
Method = value, Next = null
};
_tail.Next = item;
_tail = item;
}
}
