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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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106
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15 typedef ngx_uint_t ngx_rbtree_key_t;
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16 typedef ngx_int_t ngx_rbtree_key_int_t;
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17
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18
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108
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19 typedef struct ngx_rbtree_node_s ngx_rbtree_node_t;
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20
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108
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21 struct ngx_rbtree_node_s {
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22 ngx_rbtree_key_t key;
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23 ngx_rbtree_node_t *left;
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24 ngx_rbtree_node_t *right;
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25 ngx_rbtree_node_t *parent;
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258
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26 u_char color;
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27 u_char data;
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0
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28 };
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29
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30
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108
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31 typedef struct ngx_rbtree_s ngx_rbtree_t;
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32
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258
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33 typedef void (*ngx_rbtree_insert_pt) (ngx_rbtree_node_t *root,
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108
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34 ngx_rbtree_node_t *node, ngx_rbtree_node_t *sentinel);
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35
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36 struct ngx_rbtree_s {
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37 ngx_rbtree_node_t *root;
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38 ngx_rbtree_node_t *sentinel;
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258
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39 ngx_rbtree_insert_pt insert;
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108
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40 };
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41
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42
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108
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43 void ngx_rbtree_insert(ngx_thread_volatile ngx_rbtree_t *tree,
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44 ngx_rbtree_node_t *node);
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45 void ngx_rbtree_delete(ngx_thread_volatile ngx_rbtree_t *tree,
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46 ngx_rbtree_node_t *node);
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258
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47 void ngx_rbtree_insert_value(ngx_rbtree_node_t *root, ngx_rbtree_node_t *node,
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48 ngx_rbtree_node_t *sentinel);
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49 void ngx_rbtree_insert_timer_value(ngx_rbtree_node_t *root,
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50 ngx_rbtree_node_t *node, ngx_rbtree_node_t *sentinel);
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108
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51
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52
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53 static ngx_inline ngx_rbtree_node_t *
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54 ngx_rbtree_min(ngx_rbtree_node_t *node, ngx_rbtree_node_t *sentinel)
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55 {
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106
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56 while (node->left != sentinel) {
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57 node = node->left;
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58 }
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59
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106
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60 return node;
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61 }
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62
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63
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64 #endif /* _NGX_RBTREE_H_INCLUDED_ */
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