+++ /dev/null
-/*
- avl_tree.h -- header file for avl_tree.c
- Copyright (C) 1998 Michael H. Buselli
- 2000-2005 Ivo Timmermans,
- 2000-2006 Guus Sliepen <guus@tinc-vpn.org>
- 2000-2005 Wessel Dankers <wsl@tinc-vpn.org>
-
- This program 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 2 of the License, or
- (at your option) any later version.
-
- This program 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, write to the Free Software Foundation, Inc.,
- 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA.
-
- Original AVL tree library by Michael H. Buselli <cosine@cosine.org>.
-
- Modified 2000-11-28 by Wessel Dankers <wsl@tinc-vpn.org> to use counts
- instead of depths, to add the ->next and ->prev and to generally obfuscate
- the code. Mail me if you found a bug.
-
- Cleaned up and incorporated some of the ideas from the red-black tree
- library for inclusion into tinc (http://www.tinc-vpn.org/) by
- Guus Sliepen <guus@tinc-vpn.org>.
-*/
-
-
-#ifndef __AVL_TREE_H__
-#define __AVL_TREE_H__
-
-#ifndef AVL_DEPTH
-#ifndef AVL_COUNT
-#define AVL_DEPTH
-#endif
-#endif
-
-typedef struct avl_node_t {
-
- /* Linked list part */
-
- struct avl_node_t *next;
- struct avl_node_t *prev;
-
- /* Tree part */
-
- struct avl_node_t *parent;
- struct avl_node_t *left;
- struct avl_node_t *right;
-
-#ifdef AVL_COUNT
- unsigned int count;
-#endif
-#ifdef AVL_DEPTH
- unsigned char depth;
-#endif
-
- /* Payload */
-
- void *data;
-
-} avl_node_t;
-
-typedef int (*avl_compare_t)(const void *, const void *);
-typedef void (*avl_action_t)(const void *);
-typedef void (*avl_action_node_t)(const avl_node_t *);
-
-typedef struct avl_tree_t {
-
- /* Linked list part */
-
- avl_node_t *head;
- avl_node_t *tail;
-
- /* Tree part */
-
- avl_node_t *root;
-
- avl_compare_t compare;
- avl_action_t delete;
-
-} avl_tree_t;
-
-/* (De)constructors */
-
-extern avl_tree_t *avl_alloc_tree(avl_compare_t, avl_action_t);
-extern void avl_free_tree(avl_tree_t *);
-
-extern avl_node_t *avl_alloc_node(void);
-extern void avl_free_node(avl_tree_t *tree, avl_node_t *);
-
-/* Insertion and deletion */
-
-extern avl_node_t *avl_insert(avl_tree_t *, void *);
-extern avl_node_t *avl_insert_node(avl_tree_t *, avl_node_t *);
-
-extern void avl_insert_top(avl_tree_t *, avl_node_t *);
-extern void avl_insert_before(avl_tree_t *, avl_node_t *, avl_node_t *);
-extern void avl_insert_after(avl_tree_t *, avl_node_t *, avl_node_t *);
-
-extern avl_node_t *avl_unlink(avl_tree_t *, void *);
-extern void avl_unlink_node(avl_tree_t *tree, avl_node_t *);
-extern void avl_delete(avl_tree_t *, void *);
-extern void avl_delete_node(avl_tree_t *, avl_node_t *);
-
-/* Fast tree cleanup */
-
-extern void avl_delete_tree(avl_tree_t *);
-
-/* Searching */
-
-extern void *avl_search(const avl_tree_t *, const void *);
-extern void *avl_search_closest(const avl_tree_t *, const void *, int *);
-extern void *avl_search_closest_smaller(const avl_tree_t *, const void *);
-extern void *avl_search_closest_greater(const avl_tree_t *, const void *);
-
-extern avl_node_t *avl_search_node(const avl_tree_t *, const void *);
-extern avl_node_t *avl_search_closest_node(const avl_tree_t *, const void *, int *);
-extern avl_node_t *avl_search_closest_smaller_node(const avl_tree_t *, const void *);
-extern avl_node_t *avl_search_closest_greater_node(const avl_tree_t *, const void *);
-
-/* Tree walking */
-
-extern void avl_foreach(const avl_tree_t *, avl_action_t);
-extern void avl_foreach_node(const avl_tree_t *, avl_action_t);
-
-/* Indexing */
-
-#ifdef AVL_COUNT
-extern unsigned int avl_count(const avl_tree_t *);
-extern avl_node_t *avl_get_node(const avl_tree_t *, unsigned int);
-extern unsigned int avl_index(const avl_node_t *);
-#endif
-#ifdef AVL_DEPTH
-extern unsigned int avl_depth(const avl_tree_t *);
-#endif
-
-#endif /* __AVL_TREE_H__ */
projects / tinc / blobdiff