private:

    /** Structure for the internal linked list. */
    struct TNode
    {
        /** Holds a pointer to the next node in the list. */
        TNode* volatile NextNode;

        /** Holds the node's item. */
        ItemType Item;

        /** Default constructor. */
        TNode()
            : NextNode(nullptr)
        { }

        /** Creates and initializes a new node. */
        explicit TNode(const ItemType& InItem)
            : NextNode(nullptr)
            , Item(InItem)
        { }

        /** Creates and initializes a new node. */
        explicit TNode(ItemType&& InItem)
            : NextNode(nullptr)
            , Item(MoveTemp(InItem))
        { }
    };

    /** Holds a pointer to the head of the list. */
    MS_ALIGN(16) TNode* volatile Head GCC_ALIGN(16);

    /** Holds a pointer to the tail of the list. */
    TNode* Tail;