public void Push(SingleLinkNode <T> newNode)
{
newNode.Item = default(T);
do
{
newNode.Next = head.Next;
} while (!SyncMethods.CAS <SingleLinkNode <T> >(ref head.Next, newNode.Next, newNode));
return;
}
public bool Pop(out SingleLinkNode <T> node)
{
do
{
node = head.Next;
if (node == null)
{
return(false);
}
} while (!SyncMethods.CAS <SingleLinkNode <T> >(ref head.Next, node, node.Next));
return(true);
}
public bool Dequeue(out T item)
{
item = default(T);
SingleLinkNode <T> oldHead = null;
bool haveAdvancedHead = false;
while (!haveAdvancedHead)
{
oldHead = head;
SingleLinkNode <T> oldTail = tail;
SingleLinkNode <T> oldHeadNext = oldHead.Next;
if (oldHead == head)
{
if (oldHead == oldTail)
{
if (oldHeadNext == null)
{
return(false);
}
SyncMethods.CAS <SingleLinkNode <T> >(ref tail, oldTail, oldHeadNext);
}
else
{
item = oldHeadNext.Item;
haveAdvancedHead = SyncMethods.CAS <SingleLinkNode <T> >(ref head, oldHead, oldHeadNext);
if (haveAdvancedHead)
{
trash.Push(oldHead);
}
}
}
}
return(true);
}