diff options
author | Vikas Gorur <vikas@zresearch.com> | 2009-02-18 17:36:07 +0530 |
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committer | Vikas Gorur <vikas@zresearch.com> | 2009-02-18 17:36:07 +0530 |
commit | 77adf4cd648dce41f89469dd185deec6b6b53a0b (patch) | |
tree | 02e155a5753b398ee572b45793f889b538efab6b /libglusterfs/src/list.h | |
parent | f3b2e6580e5663292ee113c741343c8a43ee133f (diff) |
Added all files
Diffstat (limited to 'libglusterfs/src/list.h')
-rw-r--r-- | libglusterfs/src/list.h | 154 |
1 files changed, 154 insertions, 0 deletions
diff --git a/libglusterfs/src/list.h b/libglusterfs/src/list.h new file mode 100644 index 000000000..0d862f09c --- /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 */ |