#ifndef _CDS_LIST_H
#define _CDS_LIST_H 1
-/* The definitions of this file are adopted from those which can be
- found in the Linux kernel headers to enable people familiar with
- the latter find their way in these sources as well. */
-
+/*
+ * The definitions of this file are adopted from those which can be
+ * found in the Linux kernel headers to enable people familiar with the
+ * latter find their way in these sources as well.
+ */
-/* Basic type for the double-link list. */
-struct cds_list_head
-{
- struct cds_list_head *next;
- struct cds_list_head *prev;
+/* Basic type for the double-link list. */
+struct cds_list_head {
+ struct cds_list_head *next, *prev;
};
-
-/* Define a variable with the head and tail of the list. */
+/* Define a variable with the head and tail of the list. */
#define CDS_LIST_HEAD(name) \
- struct cds_list_head name = { &(name), &(name) }
+ struct cds_list_head name = { &(name), &(name) }
-/* Initialize a new list head. */
+/* Initialize a new list head. */
#define CDS_INIT_LIST_HEAD(ptr) \
- (ptr)->next = (ptr)->prev = (ptr)
+ (ptr)->next = (ptr)->prev = (ptr)
#define CDS_LIST_HEAD_INIT(name) { .prev = &(name), .next = &(name) }
-/* Add new element at the head of the list. */
-static inline void
-cds_list_add (struct cds_list_head *newp, struct cds_list_head *head)
+/* Add new element at the head of the list. */
+static inline
+void cds_list_add(struct cds_list_head *newp, struct cds_list_head *head)
{
- head->next->prev = newp;
- newp->next = head->next;
- newp->prev = head;
- head->next = newp;
+ head->next->prev = newp;
+ newp->next = head->next;
+ newp->prev = head;
+ head->next = newp;
}
-
-/* Add new element at the tail of the list. */
-static inline void
-cds_list_add_tail (struct cds_list_head *newp, struct cds_list_head *head)
+/* Add new element at the tail of the list. */
+static inline
+void cds_list_add_tail(struct cds_list_head *newp, struct cds_list_head *head)
{
- head->prev->next = newp;
- newp->next = head;
- newp->prev = head->prev;
- head->prev = newp;
+ head->prev->next = newp;
+ newp->next = head;
+ newp->prev = head->prev;
+ head->prev = newp;
}
-
-/* Remove element from list. */
-static inline void
-__cds_list_del (struct cds_list_head *prev, struct cds_list_head *next)
+/* Remove element from list. */
+static inline
+void __cds_list_del(struct cds_list_head *prev, struct cds_list_head *next)
{
- next->prev = prev;
- prev->next = next;
+ next->prev = prev;
+ prev->next = next;
}
-/* Remove element from list. */
-static inline void
-cds_list_del (struct cds_list_head *elem)
+/* Remove element from list. */
+static inline
+void cds_list_del(struct cds_list_head *elem)
{
- __cds_list_del (elem->prev, elem->next);
+ __cds_list_del(elem->prev, elem->next);
}
/* Remove element from list, initializing the element's list pointers. */
-static inline void
-cds_list_del_init (struct cds_list_head *elem)
+static inline
+void cds_list_del_init(struct cds_list_head *elem)
{
cds_list_del(elem);
CDS_INIT_LIST_HEAD(elem);
}
-/* delete from list, add to another list as head */
-static inline void
-cds_list_move (struct cds_list_head *elem, struct cds_list_head *head)
+/* Delete from list, add to another list as head. */
+static inline
+void cds_list_move(struct cds_list_head *elem, struct cds_list_head *head)
{
- __cds_list_del (elem->prev, elem->next);
- cds_list_add (elem, head);
+ __cds_list_del(elem->prev, elem->next);
+ cds_list_add(elem, head);
}
-/* replace an old entry.
- */
-static inline void
-cds_list_replace(struct cds_list_head *old, struct cds_list_head *_new)
+/* Replace an old entry. */
+static inline
+void cds_list_replace(struct cds_list_head *old, struct cds_list_head *_new)
{
_new->next = old->next;
_new->prev = old->prev;
_new->next->prev = _new;
}
-/* Join two lists. */
-static inline void
-cds_list_splice (struct cds_list_head *add, struct cds_list_head *head)
+/* Join two lists. */
+static inline
+void cds_list_splice(struct cds_list_head *add, struct cds_list_head *head)
{
- /* Do nothing if the list which gets added is empty. */
- if (add != add->next)
- {
- add->next->prev = head;
- add->prev->next = head->next;
- head->next->prev = add->prev;
- head->next = add->next;
- }
+ /* Do nothing if the list which gets added is empty. */
+ if (add != add->next) {
+ add->next->prev = head;
+ add->prev->next = head->next;
+ head->next->prev = add->prev;
+ head->next = add->next;
+ }
}
-
-/* Get typed element from list at a given position. */
+/* Get typed element from list at a given position. */
#define cds_list_entry(ptr, type, member) \
- ((type *) ((char *) (ptr) - (unsigned long) (&((type *) 0)->member)))
+ ((type *) ((char *) (ptr) - (unsigned long) (&((type *) 0)->member)))
+/* Get first entry from a list. */
+#define cds_list_first_entry(ptr, type, member) \
+ cds_list_entry((ptr)->next, type, member)
-/* Iterate forward over the elements of the list. */
+/* Iterate forward over the elements of the list. */
#define cds_list_for_each(pos, head) \
- for (pos = (head)->next; pos != (head); pos = pos->next)
+ for (pos = (head)->next; pos != (head); pos = pos->next)
+/*
+ * Iterate forward over the elements list. The list elements can be
+ * removed from the list while doing this.
+ */
+#define cds_list_for_each_safe(pos, p, head) \
+ for (pos = (head)->next, p = pos->next; \
+ pos != (head); \
+ pos = p, p = pos->next)
-/* Iterate forward over the elements of the list. */
+/* Iterate backward over the elements of the list. */
#define cds_list_for_each_prev(pos, head) \
- for (pos = (head)->prev; pos != (head); pos = pos->prev)
-
+ for (pos = (head)->prev; pos != (head); pos = pos->prev)
-/* Iterate backwards over the elements list. The list elements can be
- removed from the list while doing this. */
+/*
+ * Iterate backwards over the elements list. The list elements can be
+ * removed from the list while doing this.
+ */
#define cds_list_for_each_prev_safe(pos, p, head) \
- for (pos = (head)->prev, p = pos->prev; \
- pos != (head); \
- pos = p, p = pos->prev)
-
-#define cds_list_for_each_entry(pos, head, member) \
- for (pos = cds_list_entry((head)->next, typeof(*pos), member); \
- &pos->member != (head); \
- pos = cds_list_entry(pos->member.next, typeof(*pos), member))
-
-#define cds_list_for_each_entry_reverse(pos, head, member) \
- for (pos = cds_list_entry((head)->prev, typeof(*pos), member); \
- &pos->member != (head); \
- pos = cds_list_entry(pos->member.prev, typeof(*pos), member))
-
-#define cds_list_for_each_entry_safe(pos, p, head, member) \
- for (pos = cds_list_entry((head)->next, typeof(*pos), member), \
- p = cds_list_entry(pos->member.next,typeof(*pos), member); \
- &pos->member != (head); \
- pos = p, p = cds_list_entry(pos->member.next, typeof(*pos), member))
-
-static inline int cds_list_empty(struct cds_list_head *head)
+ for (pos = (head)->prev, p = pos->prev; \
+ pos != (head); \
+ pos = p, p = pos->prev)
+
+#define cds_list_for_each_entry(pos, head, member) \
+ for (pos = cds_list_entry((head)->next, __typeof__(*pos), member); \
+ &pos->member != (head); \
+ pos = cds_list_entry(pos->member.next, __typeof__(*pos), member))
+
+#define cds_list_for_each_entry_reverse(pos, head, member) \
+ for (pos = cds_list_entry((head)->prev, __typeof__(*pos), member); \
+ &pos->member != (head); \
+ pos = cds_list_entry(pos->member.prev, __typeof__(*pos), member))
+
+#define cds_list_for_each_entry_safe(pos, p, head, member) \
+ for (pos = cds_list_entry((head)->next, __typeof__(*pos), member), \
+ p = cds_list_entry(pos->member.next, __typeof__(*pos), member); \
+ &pos->member != (head); \
+ pos = p, p = cds_list_entry(pos->member.next, __typeof__(*pos), member))
+
+static inline
+int cds_list_empty(struct cds_list_head *head)
{
return head == head->next;
}
-static inline void cds_list_replace_init(struct cds_list_head *old,
- struct cds_list_head *_new)
+static inline
+void cds_list_replace_init(struct cds_list_head *old,
+ struct cds_list_head *_new)
{
struct cds_list_head *head = old->next;
+
cds_list_del(old);
cds_list_add_tail(_new, head);
CDS_INIT_LIST_HEAD(old);
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