    qh_rlink          507 libdb/queue.h  	struct quehead *qh_rlink;
    qh_rlink          518 libdb/queue.h  	element->qh_rlink = head;
    qh_rlink          520 libdb/queue.h  	element->qh_link->qh_rlink = element;
    qh_rlink          528 libdb/queue.h  	element->qh_link->qh_rlink = element->qh_rlink;
    qh_rlink          529 libdb/queue.h  	element->qh_rlink->qh_link = element->qh_link;
    qh_rlink          530 libdb/queue.h  	element->qh_rlink = 0;