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| Rev | Author | Line No. | Line |
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| 2416 | mencl | 1 | /* |
| 2421 | mencl | 2 | * Copyright (C) 2007 Vojtech Mencl |
| 2416 | mencl | 3 | * All rights reserved. |
| 4 | * |
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| 5 | * Redistribution and use in source and binary forms, with or without |
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| 6 | * modification, are permitted provided that the following conditions |
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| 7 | * are met: |
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| 8 | * |
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| 9 | * - Redistributions of source code must retain the above copyright |
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| 10 | * notice, this list of conditions and the following disclaimer. |
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| 11 | * - Redistributions in binary form must reproduce the above copyright |
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| 12 | * notice, this list of conditions and the following disclaimer in the |
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| 13 | * documentation and/or other materials provided with the distribution. |
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| 14 | * - The name of the author may not be used to endorse or promote products |
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| 15 | * derived from this software without specific prior written permission. |
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| 16 | * |
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| 17 | * THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR |
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| 18 | * IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES |
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| 19 | * OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED. |
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| 20 | * IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT, |
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| 21 | * INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT |
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| 22 | * NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, |
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| 23 | * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY |
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| 24 | * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT |
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| 25 | * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF |
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| 26 | * THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. |
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| 27 | */ |
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| 28 | |||
| 29 | /** @addtogroup genericadt |
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| 30 | * @{ |
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| 31 | */ |
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| 32 | /** @file |
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| 33 | */ |
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| 34 | |||
| 35 | |||
| 36 | #ifndef KERN_EXTAVLRELTREE_H_ |
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| 37 | #define KERN_EXTAVLRELTREE_H_ |
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| 38 | |||
| 39 | #include <arch/types.h> |
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| 40 | |||
| 41 | typedef struct extavlreltree_node extavlreltree_node_t; |
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| 42 | typedef struct extavlreltree extavlreltree_t; |
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| 43 | |||
| 44 | |||
| 45 | /* |
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| 46 | * Makro for getting pointer to structure which enclosure extavlreltree structure. |
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| 47 | * |
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| 48 | * @param link Pointer to extavlreltree structure. |
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| 49 | * @param type Name of outer structure. |
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| 50 | * @param member Name of extavlreltree atribute in outer structure. |
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| 51 | */ |
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| 52 | #define extavlreltree_get_instance(link,type,member) \ |
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| 53 | ((type *)(((uint8_t *)(link)) - ((uint8_t *)&(((type *)NULL)->member)))) |
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| 54 | |||
| 55 | |||
| 56 | |||
| 57 | /** Relative key Extended AVL tree node structure. */ |
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| 58 | struct extavlreltree_node |
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| 59 | { |
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| 60 | /** |
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| 61 | * Pointer to left descendand of this node. |
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| 62 | * |
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| 63 | * All keys of nodes in the left subtree are less then key of this node. |
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| 64 | */ |
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| 65 | extavlreltree_node_t *lft; |
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| 66 | |||
| 67 | /** |
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| 68 | * Pointer to right descendand of this node. |
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| 69 | * |
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| 70 | * All keys of nodes in the right subtree are greater then key of this node. |
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| 71 | */ |
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| 72 | extavlreltree_node_t *rgt; |
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| 73 | |||
| 74 | /** Pointer to parent node. Root node has NULL parent. */ |
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| 75 | extavlreltree_node_t *par; |
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| 76 | |||
| 77 | /** Pointer to next node which has equal or the closest greater key or head. */ |
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| 78 | extavlreltree_node_t *next; |
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| 79 | |||
| 80 | /** Pointer to previous node which has equal or the closest lesser key or head. */ |
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| 81 | extavlreltree_node_t *prev; |
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| 82 | |||
| 83 | /** Height of left subtree. */ |
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| 84 | int16_t lft_height; |
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| 85 | |||
| 86 | /** Height of right subtree. */ |
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| 87 | int16_t rgt_height; |
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| 88 | |||
| 89 | /** Nodes key. */ |
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| 90 | uint64_t key; |
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| 91 | |||
| 92 | /** Sum of all keys in the right subtree. */ |
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| 93 | uint64_t rgt_sum; |
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| 94 | }; |
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| 95 | |||
| 96 | /** Relative key Extended AVL tree structure (ExtAvlrel). */ |
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| 97 | struct extavlreltree |
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| 98 | { |
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| 99 | /* |
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| 100 | * ExtAvlrel root node pointer. |
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| 101 | * |
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| 102 | * Important only for recognition of non tree node. |
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| 103 | */ |
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| 104 | extavlreltree_node_t *root; |
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| 105 | |||
| 106 | /** Head of doubly linked list of nodes. It is entrance point to the tree. */ |
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| 107 | extavlreltree_node_t head; |
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| 108 | }; |
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| 109 | |||
| 110 | |||
| 111 | |||
| 112 | /** Create empty Extended AVL tree. |
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| 113 | * |
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| 114 | * @param t Extended AVL tree structure. |
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| 115 | */ |
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| 2421 | mencl | 116 | static inline void extavlreltree_create (extavlreltree_t *t) |
| 2416 | mencl | 117 | { |
| 118 | t->root = NULL; |
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| 119 | |||
| 120 | t->head.next = &t->head; |
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| 121 | t->head.prev = &t->head; |
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| 122 | } |
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| 123 | |||
| 124 | /** Initialize node. |
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| 125 | * |
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| 126 | * @param node Node which is initialized. |
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| 127 | */ |
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| 2421 | mencl | 128 | static inline void extavlreltree_node_initialize(extavlreltree_node_t *node) |
| 2416 | mencl | 129 | { |
| 130 | node->lft = NULL; |
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| 131 | node->rgt = NULL; |
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| 132 | node->lft_height = 0; |
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| 133 | node->rgt_height = 0; |
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| 134 | node->par = NULL; |
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| 135 | node->next = node; |
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| 136 | node->prev = node; |
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| 137 | node->rgt_sum = 0; |
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| 138 | } |
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| 139 | |||
| 140 | extavlreltree_node_t *extavlreltree_search(extavlreltree_t *t, uint64_t key); |
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| 141 | void extavlreltree_insert(extavlreltree_t *t, extavlreltree_node_t *newnode); |
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| 142 | void extavlreltree_delete(extavlreltree_t *t, extavlreltree_node_t *node); |
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| 143 | bool extavlreltree_delete_min(extavlreltree_t *t); |
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| 144 | |||
| 145 | #endif |
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| 146 | |||
| 147 | /** @} |
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| 148 | */ |