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authorVikas Gorur <vikas@zresearch.com>2009-02-18 17:36:07 +0530
committerVikas Gorur <vikas@zresearch.com>2009-02-18 17:36:07 +0530
commit77adf4cd648dce41f89469dd185deec6b6b53a0b (patch)
tree02e155a5753b398ee572b45793f889b538efab6b /libglusterfs/src/list.h
parentf3b2e6580e5663292ee113c741343c8a43ee133f (diff)
Added all files
Diffstat (limited to 'libglusterfs/src/list.h')
-rw-r--r--libglusterfs/src/list.h154
1 files changed, 154 insertions, 0 deletions
diff --git a/libglusterfs/src/list.h b/libglusterfs/src/list.h
new file mode 100644
index 00000000000..0d862f09c3f
--- /dev/null
+++ b/libglusterfs/src/list.h
@@ -0,0 +1,154 @@
+/*
+ Copyright (c) 2008 Z RESEARCH, Inc. <http://www.zresearch.com>
+ This file is part of GlusterFS.
+
+ GlusterFS is free software; you can redistribute it and/or modify
+ it under the terms of the GNU General Public License as published
+ by the Free Software Foundation; either version 3 of the License,
+ or (at your option) any later version.
+
+ GlusterFS is distributed in the hope that it will be useful, but
+ WITHOUT ANY WARRANTY; without even the implied warranty of
+ MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
+ General Public License for more details.
+
+ You should have received a copy of the GNU General Public License
+ along with this program. If not, see
+ <http://www.gnu.org/licenses/>.
+*/
+
+#ifndef _LLIST_H
+#define _LLIST_H
+
+
+struct list_head {
+ struct list_head *next;
+ struct list_head *prev;
+};
+
+
+#define INIT_LIST_HEAD(head) do { \
+ (head)->next = (head)->prev = head; \
+ } while (0)
+
+
+static inline void
+list_add (struct list_head *new, struct list_head *head)
+{
+ new->prev = head;
+ new->next = head->next;
+
+ new->prev->next = new;
+ new->next->prev = new;
+}
+
+
+static inline void
+list_add_tail (struct list_head *new, struct list_head *head)
+{
+ new->next = head;
+ new->prev = head->prev;
+
+ new->prev->next = new;
+ new->next->prev = new;
+}
+
+
+static inline void
+list_del (struct list_head *old)
+{
+ old->prev->next = old->next;
+ old->next->prev = old->prev;
+
+ old->next = (void *)0xbabebabe;
+ old->prev = (void *)0xcafecafe;
+}
+
+
+static inline void
+list_del_init (struct list_head *old)
+{
+ old->prev->next = old->next;
+ old->next->prev = old->prev;
+
+ old->next = old;
+ old->prev = old;
+}
+
+
+static inline void
+list_move (struct list_head *list, struct list_head *head)
+{
+ list_del (list);
+ list_add (list, head);
+}
+
+
+static inline void
+list_move_tail (struct list_head *list, struct list_head *head)
+{
+ list_del (list);
+ list_add_tail (list, head);
+}
+
+
+static inline int
+list_empty (struct list_head *head)
+{
+ return (head->next == head);
+}
+
+
+static inline void
+__list_splice (struct list_head *list, struct list_head *head)
+{
+ (list->prev)->next = (head->next);
+ (head->next)->prev = (list->prev);
+
+ (head)->next = (list->next);
+ (list->next)->prev = (head);
+}
+
+
+static inline void
+list_splice (struct list_head *list, struct list_head *head)
+{
+ if (list_empty (list))
+ return;
+
+ __list_splice (list, head);
+}
+
+
+static inline void
+list_splice_init (struct list_head *list, struct list_head *head)
+{
+ if (list_empty (list))
+ return;
+
+ __list_splice (list, head);
+ INIT_LIST_HEAD (list);
+}
+
+
+#define list_entry(ptr, type, member) \
+ ((type *)((char *)(ptr)-(unsigned long)(&((type *)0)->member)))
+
+
+#define list_for_each(pos, head) \
+ for (pos = (head)->next; pos != (head); pos = pos->next)
+
+
+#define list_for_each_entry(pos, head, member) \
+ for (pos = list_entry((head)->next, typeof(*pos), member); \
+ &pos->member != (head); \
+ pos = list_entry(pos->member.next, typeof(*pos), member))
+
+
+#define list_for_each_entry_safe(pos, n, head, member) \
+ for (pos = list_entry((head)->next, typeof(*pos), member), \
+ n = list_entry(pos->member.next, typeof(*pos), member); \
+ &pos->member != (head); \
+ pos = n, n = list_entry(n->member.next, typeof(*n), member))
+
+#endif /* _LLIST_H */