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1
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2 /*
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3 * Copyright (C) Igor Sysoev
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4 */
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5
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6
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7 #ifndef _NGX_RBTREE_H_INCLUDED_
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8 #define _NGX_RBTREE_H_INCLUDED_
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9
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10
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11 #include <ngx_config.h>
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12 #include <ngx_core.h>
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13
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14
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15 typedef struct ngx_rbtree_s ngx_rbtree_t;
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16
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17 struct ngx_rbtree_s {
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18 ngx_int_t key;
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19 ngx_rbtree_t *left;
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20 ngx_rbtree_t *right;
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21 ngx_rbtree_t *parent;
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22 char color;
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23 };
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24
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25
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26 void ngx_rbtree_insert(ngx_rbtree_t **root, ngx_rbtree_t *sentinel,
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27 ngx_rbtree_t *node);
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28 void ngx_rbtree_delete(ngx_rbtree_t **root, ngx_rbtree_t *sentinel,
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29 ngx_rbtree_t *node);
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30
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31
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32 ngx_inline static ngx_rbtree_t *ngx_rbtree_min(ngx_rbtree_t *node,
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33 ngx_rbtree_t *sentinel)
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34 {
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35 while (node->left != sentinel) {
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36 node = node->left;
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37 }
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38
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39 return node;
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40 }
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41
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42
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43 #endif /* _NGX_RBTREE_H_INCLUDED_ */
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