-#ifndef _KCOMPAT_HLIST_H
-#define _KCOMPAT_HLIST_H
-
-/*
- * Kernel sourcecode compatible lightweight single pointer list head useful
- * for implementing hash tables
- *
- * Copyright (C) 2009 Novell Inc.
- *
- * Author: Jan Blunck <jblunck@suse.de>
- *
- * Copyright (C) 2010-2013 Mathieu Desnoyers <mathieu.desnoyers@efficios.com>
- *
- * This program is free software; you can redistribute it and/or modify it
- * under the terms of the GNU Lesser General Public License version 2.1 as
- * published by the Free Software Foundation.
- */
-
-#include <stddef.h>
-
-struct cds_hlist_head {
- struct cds_hlist_node *next;
-};
-
-struct cds_hlist_node {
- struct cds_hlist_node *next, *prev;
-};
-
-/* Initialize a new list head. */
-static inline
-void CDS_INIT_HLIST_HEAD(struct cds_hlist_head *ptr)
-{
- ptr->next = NULL;
-}
-
-#define CDS_HLIST_HEAD(name) \
- struct cds_hlist_head name = { NULL }
-
-#define CDS_HLIST_HEAD_INIT(name) \
- { .next = NULL }
-
-/* Get typed element from list at a given position. */
-#define cds_hlist_entry(ptr, type, member) \
- ((type *) ((char *) (ptr) - (unsigned long) (&((type *) 0)->member)))
-
-/* Add new element at the head of the list. */
-static inline
-void cds_hlist_add_head(struct cds_hlist_node *newp,
- struct cds_hlist_head *head)
-{
- if (head->next)
- head->next->prev = newp;
- newp->next = head->next;
- newp->prev = (struct cds_hlist_node *) head;
- head->next = newp;
-}
-
-/* Remove element from list. */
-static inline
-void cds_hlist_del(struct cds_hlist_node *elem)
-{
- if (elem->next)
- elem->next->prev = elem->prev;
- elem->prev->next = elem->next;
-}
-
-#define cds_hlist_for_each(pos, head) \
- for (pos = (head)->next; pos != NULL; pos = pos->next)
-
-#define cds_hlist_for_each_safe(pos, p, head) \
- for (pos = (head)->next; \
- (pos != NULL) && (p = pos->next, 1); \
- pos = p)
-
-/*
- * cds_hlist_for_each_entry and cds_hlist_for_each_entry_safe take
- * respectively 4 and 5 arguments, while the Linux kernel APIs take 3,
- * and 4. We implement cds_hlist_for_each_entry_2() and
- * cds_hlist_for_each_entry_safe_2() to follow the Linux kernel APIs.
- */
-#define cds_hlist_for_each_entry(entry, pos, head, member) \
- for (pos = (head)->next, \
- entry = cds_hlist_entry(pos, __typeof__(*entry), member); \
- pos != NULL; \
- pos = pos->next, \
- entry = cds_hlist_entry(pos, __typeof__(*entry), member))
-
-#define cds_hlist_for_each_entry_safe(entry, pos, p, head, member) \
- for (pos = (head)->next, \
- entry = cds_hlist_entry(pos, __typeof__(*entry), member); \
- (pos != NULL) && (p = pos->next, 1); \
- pos = p, \
- entry = cds_hlist_entry(pos, __typeof__(*entry), member))
-
-#define cds_hlist_for_each_entry_2(entry, head, member) \
- for (entry = cds_hlist_entry((head)->next, __typeof__(*entry), member); \
- &entry->member != NULL; \
- entry = cds_hlist_entry(entry->member.next, __typeof__(*entry), member))
-
-#define cds_hlist_for_each_entry_safe_2(entry, e, head, member) \
- for (entry = cds_hlist_entry((head)->next, __typeof__(*entry), member); \
- (&entry->member != NULL) && (e = cds_hlist_entry(entry->member.next, \
- __typeof__(*entry), member), 1); \
- entry = e)
-
-#endif /* _KCOMPAT_HLIST_H */