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Diffstat (limited to 'third_party/git/list.h')
-rw-r--r-- | third_party/git/list.h | 204 |
1 files changed, 0 insertions, 204 deletions
diff --git a/third_party/git/list.h b/third_party/git/list.h deleted file mode 100644 index eb601192f4ca..000000000000 --- a/third_party/git/list.h +++ /dev/null @@ -1,204 +0,0 @@ -/* - * Copyright (C) 2002 Free Software Foundation, Inc. - * (originally part of the GNU C Library and Userspace RCU) - * Contributed by Ulrich Drepper <drepper@redhat.com>, 2002. - * - * Copyright (C) 2009 Pierre-Marc Fournier - * Conversion to RCU list. - * Copyright (C) 2010 Mathieu Desnoyers <mathieu.desnoyers@efficios.com> - * - * This library is free software; you can redistribute it and/or - * modify it under the terms of the GNU Lesser General Public - * License as published by the Free Software Foundation; either - * version 2.1 of the License, or (at your option) any later version. - * - * This library 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 - * Lesser General Public License for more details. - * - * You should have received a copy of the GNU Lesser General Public - * License along with this library; if not, see - * <http://www.gnu.org/licenses/>. - */ - -#ifndef LIST_H -#define 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. - */ - -/* Basic type for the double-link list. */ -struct list_head { - struct list_head *next, *prev; -}; - -/* avoid conflicts with BSD-only sys/queue.h */ -#undef LIST_HEAD -/* Define a variable with the head and tail of the list. */ -#define LIST_HEAD(name) \ - struct list_head name = { &(name), &(name) } - -/* Initialize a new list head. */ -#define INIT_LIST_HEAD(ptr) \ - (ptr)->next = (ptr)->prev = (ptr) - -#define LIST_HEAD_INIT(name) { &(name), &(name) } - -/* Add new element at the head of the list. */ -static inline void list_add(struct list_head *newp, struct list_head *head) -{ - 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 list_add_tail(struct list_head *newp, struct list_head *head) -{ - head->prev->next = newp; - newp->next = head; - newp->prev = head->prev; - head->prev = newp; -} - -/* Remove element from list. */ -static inline void __list_del(struct list_head *prev, struct list_head *next) -{ - next->prev = prev; - prev->next = next; -} - -/* Remove element from list. */ -static inline void list_del(struct list_head *elem) -{ - __list_del(elem->prev, elem->next); -} - -/* Remove element from list, initializing the element's list pointers. */ -static inline void list_del_init(struct list_head *elem) -{ - list_del(elem); - INIT_LIST_HEAD(elem); -} - -/* Delete from list, add to another list as head. */ -static inline void list_move(struct list_head *elem, struct list_head *head) -{ - __list_del(elem->prev, elem->next); - list_add(elem, head); -} - -/* Replace an old entry. */ -static inline void list_replace(struct list_head *old, struct list_head *newp) -{ - newp->next = old->next; - newp->prev = old->prev; - newp->prev->next = newp; - newp->next->prev = newp; -} - -/* Join two lists. */ -static inline void list_splice(struct list_head *add, struct 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; - } -} - -/* Get typed element from list at a given position. */ -#define list_entry(ptr, type, member) \ - ((type *) ((char *) (ptr) - offsetof(type, member))) - -/* Get first entry from a list. */ -#define list_first_entry(ptr, type, member) \ - list_entry((ptr)->next, type, member) - -/* Iterate forward over the elements of the list. */ -#define list_for_each(pos, head) \ - 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 list_for_each_safe(pos, p, head) \ - for (pos = (head)->next, p = pos->next; \ - pos != (head); \ - pos = p, p = pos->next) - -/* Iterate backward over the elements of the list. */ -#define list_for_each_prev(pos, head) \ - 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. - */ -#define list_for_each_prev_safe(pos, p, head) \ - for (pos = (head)->prev, p = pos->prev; \ - pos != (head); \ - pos = p, p = pos->prev) - -static inline int list_empty(struct list_head *head) -{ - return head == head->next; -} - -static inline void list_replace_init(struct list_head *old, - struct list_head *newp) -{ - struct list_head *head = old->next; - - list_del(old); - list_add_tail(newp, head); - INIT_LIST_HEAD(old); -} - -/* - * This is exactly the same as a normal list_head, except that it can be - * declared volatile (e.g., if you have a list that may be accessed from signal - * handlers). - */ -struct volatile_list_head { - volatile struct volatile_list_head *next, *prev; -}; - -#define VOLATILE_LIST_HEAD(name) \ - volatile struct volatile_list_head name = { &(name), &(name) } - -static inline void __volatile_list_del(volatile struct volatile_list_head *prev, - volatile struct volatile_list_head *next) -{ - next->prev = prev; - prev->next = next; -} - -static inline void volatile_list_del(volatile struct volatile_list_head *elem) -{ - __volatile_list_del(elem->prev, elem->next); -} - -static inline int volatile_list_empty(volatile struct volatile_list_head *head) -{ - return head == head->next; -} - -static inline void volatile_list_add(volatile struct volatile_list_head *newp, - volatile struct volatile_list_head *head) -{ - head->next->prev = newp; - newp->next = head->next; - newp->prev = head; - head->next = newp; -} - -#endif /* LIST_H */ |