#ifndef LIST_H
#define LIST_H

void allocthings(void);
void *allocentry(void);

void _addtail(listhead *header, listhead *entry);
#define addtail(head, entry) _addtail(head, &(entry->list));

/* returns previous entry, use as
 *   iter = delinkhead(iter);
 * in foreach_list_entry loops
 */
listhead* delinkhead(listhead *entry);
#define delink(entry) delinkhead(&(entry->list));


void initheader(listhead *head);

/* listhead *head, listhead *iter, XXX *item */
#define foreach_list_entry(head, iter, item) \
	for (iter = (head)->next, item = (void*) iter; iter != (head); iter = iter->next, item = (void*) iter)

#endif