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annotate src/core/ngx_rbtree.c @ 444:42d11f017717

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nginx-0.1.0-2004-09-29-20:00:49 import; remove years from copyright
author Igor Sysoev <igor@sysoev.ru>
date Wed, 29 Sep 2004 16:00:49 +0000
parents da8c5707af39
children bbd6b0b4a2b1
Ignore whitespace changes - Everywhere: Within whitespace: At end of lines:
rev   line source
441
da8c5707af39 nginx-0.1.0-2004-09-28-12:34:51 import; set copyright and remove unused files
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parents: 229
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1
da8c5707af39 nginx-0.1.0-2004-09-28-12:34:51 import; set copyright and remove unused files
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2 /*
444
42d11f017717 nginx-0.1.0-2004-09-29-20:00:49 import; remove years from copyright
Igor Sysoev <igor@sysoev.ru>
parents: 441
diff changeset
3 * Copyright (C) Igor Sysoev
441
da8c5707af39 nginx-0.1.0-2004-09-28-12:34:51 import; set copyright and remove unused files
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parents: 229
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4 */
da8c5707af39 nginx-0.1.0-2004-09-28-12:34:51 import; set copyright and remove unused files
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parents: 229
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5
205
4a9a2b1dd6fa nginx-0.0.1-2003-12-04-17:53:00 import
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6
4a9a2b1dd6fa nginx-0.0.1-2003-12-04-17:53:00 import
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7 #include <ngx_config.h>
4a9a2b1dd6fa nginx-0.0.1-2003-12-04-17:53:00 import
Igor Sysoev <igor@sysoev.ru>
parents:
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8 #include <ngx_core.h>
4a9a2b1dd6fa nginx-0.0.1-2003-12-04-17:53:00 import
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9
4a9a2b1dd6fa nginx-0.0.1-2003-12-04-17:53:00 import
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10
4a9a2b1dd6fa nginx-0.0.1-2003-12-04-17:53:00 import
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11 /*
4a9a2b1dd6fa nginx-0.0.1-2003-12-04-17:53:00 import
Igor Sysoev <igor@sysoev.ru>
parents:
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12 * The code is based on the algorithm described in the "Introduction
4a9a2b1dd6fa nginx-0.0.1-2003-12-04-17:53:00 import
Igor Sysoev <igor@sysoev.ru>
parents:
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13 * to Algorithms" by Cormen, Leiserson and Rivest.
4a9a2b1dd6fa nginx-0.0.1-2003-12-04-17:53:00 import
Igor Sysoev <igor@sysoev.ru>
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14 */
4a9a2b1dd6fa nginx-0.0.1-2003-12-04-17:53:00 import
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15
206
9aa426375256 nginx-0.0.1-2003-12-05-10:11:46 import
Igor Sysoev <igor@sysoev.ru>
parents: 205
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16 #define ngx_rbt_red(node) ((node)->color = 1)
9aa426375256 nginx-0.0.1-2003-12-05-10:11:46 import
Igor Sysoev <igor@sysoev.ru>
parents: 205
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17 #define ngx_rbt_black(node) ((node)->color = 0)
9aa426375256 nginx-0.0.1-2003-12-05-10:11:46 import
Igor Sysoev <igor@sysoev.ru>
parents: 205
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18 #define ngx_rbt_is_red(node) ((node)->color)
205
4a9a2b1dd6fa nginx-0.0.1-2003-12-04-17:53:00 import
Igor Sysoev <igor@sysoev.ru>
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19 #define ngx_rbt_is_black(node) (!ngx_rbt_is_red(node))
206
9aa426375256 nginx-0.0.1-2003-12-05-10:11:46 import
Igor Sysoev <igor@sysoev.ru>
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20 #define ngx_rbt_copy_color(n1, n2) (n1->color = n2->color)
205
4a9a2b1dd6fa nginx-0.0.1-2003-12-04-17:53:00 import
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21
4a9a2b1dd6fa nginx-0.0.1-2003-12-04-17:53:00 import
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22
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6e0fef527732 nginx-0.0.1-2003-12-05-20:07:27 import
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23 ngx_inline void ngx_rbtree_left_rotate(ngx_rbtree_t **root,
6e0fef527732 nginx-0.0.1-2003-12-05-20:07:27 import
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parents: 206
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24 ngx_rbtree_t *sentinel,
6e0fef527732 nginx-0.0.1-2003-12-05-20:07:27 import
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25 ngx_rbtree_t *node);
205
4a9a2b1dd6fa nginx-0.0.1-2003-12-04-17:53:00 import
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26 ngx_inline void ngx_rbtree_right_rotate(ngx_rbtree_t **root,
207
6e0fef527732 nginx-0.0.1-2003-12-05-20:07:27 import
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27 ngx_rbtree_t *sentinel,
205
4a9a2b1dd6fa nginx-0.0.1-2003-12-04-17:53:00 import
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28 ngx_rbtree_t *node);
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29
4a9a2b1dd6fa nginx-0.0.1-2003-12-04-17:53:00 import
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30
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6e0fef527732 nginx-0.0.1-2003-12-05-20:07:27 import
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31 void ngx_rbtree_insert(ngx_rbtree_t **root, ngx_rbtree_t *sentinel,
6e0fef527732 nginx-0.0.1-2003-12-05-20:07:27 import
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32 ngx_rbtree_t *node)
205
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33 {
4a9a2b1dd6fa nginx-0.0.1-2003-12-04-17:53:00 import
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34 ngx_rbtree_t *temp;
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35
4a9a2b1dd6fa nginx-0.0.1-2003-12-04-17:53:00 import
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36 /* a binary tree insert */
4a9a2b1dd6fa nginx-0.0.1-2003-12-04-17:53:00 import
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37
207
6e0fef527732 nginx-0.0.1-2003-12-05-20:07:27 import
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38 if (*root == sentinel) {
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679f60139863 nginx-0.0.1-2003-12-19-11:15:11 import
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parents: 207
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39 node->parent = NULL;
207
6e0fef527732 nginx-0.0.1-2003-12-05-20:07:27 import
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parents: 206
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40 node->left = sentinel;
6e0fef527732 nginx-0.0.1-2003-12-05-20:07:27 import
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parents: 206
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41 node->right = sentinel;
205
4a9a2b1dd6fa nginx-0.0.1-2003-12-04-17:53:00 import
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parents:
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42 ngx_rbt_black(node);
4a9a2b1dd6fa nginx-0.0.1-2003-12-04-17:53:00 import
Igor Sysoev <igor@sysoev.ru>
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43 *root = node;
4a9a2b1dd6fa nginx-0.0.1-2003-12-04-17:53:00 import
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44
4a9a2b1dd6fa nginx-0.0.1-2003-12-04-17:53:00 import
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45 return;
4a9a2b1dd6fa nginx-0.0.1-2003-12-04-17:53:00 import
Igor Sysoev <igor@sysoev.ru>
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46 }
4a9a2b1dd6fa nginx-0.0.1-2003-12-04-17:53:00 import
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47
4a9a2b1dd6fa nginx-0.0.1-2003-12-04-17:53:00 import
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48 temp = *root;
4a9a2b1dd6fa nginx-0.0.1-2003-12-04-17:53:00 import
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49
4a9a2b1dd6fa nginx-0.0.1-2003-12-04-17:53:00 import
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50 for ( ;; ) {
4a9a2b1dd6fa nginx-0.0.1-2003-12-04-17:53:00 import
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51 if (node->key < temp->key) {
207
6e0fef527732 nginx-0.0.1-2003-12-05-20:07:27 import
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parents: 206
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52 if (temp->left == sentinel) {
205
4a9a2b1dd6fa nginx-0.0.1-2003-12-04-17:53:00 import
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parents:
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53 temp->left = node;
4a9a2b1dd6fa nginx-0.0.1-2003-12-04-17:53:00 import
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parents:
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54 break;
4a9a2b1dd6fa nginx-0.0.1-2003-12-04-17:53:00 import
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55 }
4a9a2b1dd6fa nginx-0.0.1-2003-12-04-17:53:00 import
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56
4a9a2b1dd6fa nginx-0.0.1-2003-12-04-17:53:00 import
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57 temp = temp->left;
4a9a2b1dd6fa nginx-0.0.1-2003-12-04-17:53:00 import
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58 continue;
4a9a2b1dd6fa nginx-0.0.1-2003-12-04-17:53:00 import
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59 }
4a9a2b1dd6fa nginx-0.0.1-2003-12-04-17:53:00 import
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60
207
6e0fef527732 nginx-0.0.1-2003-12-05-20:07:27 import
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61 if (temp->right == sentinel) {
205
4a9a2b1dd6fa nginx-0.0.1-2003-12-04-17:53:00 import
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62 temp->right = node;
4a9a2b1dd6fa nginx-0.0.1-2003-12-04-17:53:00 import
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63 break;
4a9a2b1dd6fa nginx-0.0.1-2003-12-04-17:53:00 import
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64 }
4a9a2b1dd6fa nginx-0.0.1-2003-12-04-17:53:00 import
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65
4a9a2b1dd6fa nginx-0.0.1-2003-12-04-17:53:00 import
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66 temp = temp->right;
4a9a2b1dd6fa nginx-0.0.1-2003-12-04-17:53:00 import
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67 continue;
4a9a2b1dd6fa nginx-0.0.1-2003-12-04-17:53:00 import
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68 }
4a9a2b1dd6fa nginx-0.0.1-2003-12-04-17:53:00 import
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69
4a9a2b1dd6fa nginx-0.0.1-2003-12-04-17:53:00 import
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70 node->parent = temp;
207
6e0fef527732 nginx-0.0.1-2003-12-05-20:07:27 import
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71 node->left = sentinel;
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72 node->right = sentinel;
205
4a9a2b1dd6fa nginx-0.0.1-2003-12-04-17:53:00 import
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73
4a9a2b1dd6fa nginx-0.0.1-2003-12-04-17:53:00 import
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74
4a9a2b1dd6fa nginx-0.0.1-2003-12-04-17:53:00 import
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75 /* re-balance tree */
4a9a2b1dd6fa nginx-0.0.1-2003-12-04-17:53:00 import
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76
4a9a2b1dd6fa nginx-0.0.1-2003-12-04-17:53:00 import
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77 ngx_rbt_red(node);
4a9a2b1dd6fa nginx-0.0.1-2003-12-04-17:53:00 import
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78
212
679f60139863 nginx-0.0.1-2003-12-19-11:15:11 import
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parents: 207
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79 while (node != *root && ngx_rbt_is_red(node->parent)) {
205
4a9a2b1dd6fa nginx-0.0.1-2003-12-04-17:53:00 import
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parents:
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80
4a9a2b1dd6fa nginx-0.0.1-2003-12-04-17:53:00 import
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81 if (node->parent == node->parent->parent->left) {
4a9a2b1dd6fa nginx-0.0.1-2003-12-04-17:53:00 import
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parents:
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82 temp = node->parent->parent->right;
4a9a2b1dd6fa nginx-0.0.1-2003-12-04-17:53:00 import
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83
4a9a2b1dd6fa nginx-0.0.1-2003-12-04-17:53:00 import
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84 if (ngx_rbt_is_red(temp)) {
4a9a2b1dd6fa nginx-0.0.1-2003-12-04-17:53:00 import
Igor Sysoev <igor@sysoev.ru>
parents:
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85 ngx_rbt_black(node->parent);
4a9a2b1dd6fa nginx-0.0.1-2003-12-04-17:53:00 import
Igor Sysoev <igor@sysoev.ru>
parents:
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86 ngx_rbt_black(temp);
4a9a2b1dd6fa nginx-0.0.1-2003-12-04-17:53:00 import
Igor Sysoev <igor@sysoev.ru>
parents:
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87 ngx_rbt_red(node->parent->parent);
4a9a2b1dd6fa nginx-0.0.1-2003-12-04-17:53:00 import
Igor Sysoev <igor@sysoev.ru>
parents:
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88 node = node->parent->parent;
4a9a2b1dd6fa nginx-0.0.1-2003-12-04-17:53:00 import
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parents:
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89
4a9a2b1dd6fa nginx-0.0.1-2003-12-04-17:53:00 import
Igor Sysoev <igor@sysoev.ru>
parents:
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90 } else {
4a9a2b1dd6fa nginx-0.0.1-2003-12-04-17:53:00 import
Igor Sysoev <igor@sysoev.ru>
parents:
diff changeset
91 if (node == node->parent->right) {
4a9a2b1dd6fa nginx-0.0.1-2003-12-04-17:53:00 import
Igor Sysoev <igor@sysoev.ru>
parents:
diff changeset
92 node = node->parent;
207
6e0fef527732 nginx-0.0.1-2003-12-05-20:07:27 import
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parents: 206
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93 ngx_rbtree_left_rotate(root, sentinel, node);
205
4a9a2b1dd6fa nginx-0.0.1-2003-12-04-17:53:00 import
Igor Sysoev <igor@sysoev.ru>
parents:
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94 }
4a9a2b1dd6fa nginx-0.0.1-2003-12-04-17:53:00 import
Igor Sysoev <igor@sysoev.ru>
parents:
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95
4a9a2b1dd6fa nginx-0.0.1-2003-12-04-17:53:00 import
Igor Sysoev <igor@sysoev.ru>
parents:
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96 ngx_rbt_black(node->parent);
4a9a2b1dd6fa nginx-0.0.1-2003-12-04-17:53:00 import
Igor Sysoev <igor@sysoev.ru>
parents:
diff changeset
97 ngx_rbt_red(node->parent->parent);
207
6e0fef527732 nginx-0.0.1-2003-12-05-20:07:27 import
Igor Sysoev <igor@sysoev.ru>
parents: 206
diff changeset
98 ngx_rbtree_right_rotate(root, sentinel, node->parent->parent);
205
4a9a2b1dd6fa nginx-0.0.1-2003-12-04-17:53:00 import
Igor Sysoev <igor@sysoev.ru>
parents:
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99 }
4a9a2b1dd6fa nginx-0.0.1-2003-12-04-17:53:00 import
Igor Sysoev <igor@sysoev.ru>
parents:
diff changeset
100
4a9a2b1dd6fa nginx-0.0.1-2003-12-04-17:53:00 import
Igor Sysoev <igor@sysoev.ru>
parents:
diff changeset
101 } else {
4a9a2b1dd6fa nginx-0.0.1-2003-12-04-17:53:00 import
Igor Sysoev <igor@sysoev.ru>
parents:
diff changeset
102 temp = node->parent->parent->left;
4a9a2b1dd6fa nginx-0.0.1-2003-12-04-17:53:00 import
Igor Sysoev <igor@sysoev.ru>
parents:
diff changeset
103
4a9a2b1dd6fa nginx-0.0.1-2003-12-04-17:53:00 import
Igor Sysoev <igor@sysoev.ru>
parents:
diff changeset
104 if (ngx_rbt_is_red(temp)) {
4a9a2b1dd6fa nginx-0.0.1-2003-12-04-17:53:00 import
Igor Sysoev <igor@sysoev.ru>
parents:
diff changeset
105 ngx_rbt_black(node->parent);
4a9a2b1dd6fa nginx-0.0.1-2003-12-04-17:53:00 import
Igor Sysoev <igor@sysoev.ru>
parents:
diff changeset
106 ngx_rbt_black(temp);
4a9a2b1dd6fa nginx-0.0.1-2003-12-04-17:53:00 import
Igor Sysoev <igor@sysoev.ru>
parents:
diff changeset
107 ngx_rbt_red(node->parent->parent);
4a9a2b1dd6fa nginx-0.0.1-2003-12-04-17:53:00 import
Igor Sysoev <igor@sysoev.ru>
parents:
diff changeset
108 node = node->parent->parent;
4a9a2b1dd6fa nginx-0.0.1-2003-12-04-17:53:00 import
Igor Sysoev <igor@sysoev.ru>
parents:
diff changeset
109
4a9a2b1dd6fa nginx-0.0.1-2003-12-04-17:53:00 import
Igor Sysoev <igor@sysoev.ru>
parents:
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110 } else {
4a9a2b1dd6fa nginx-0.0.1-2003-12-04-17:53:00 import
Igor Sysoev <igor@sysoev.ru>
parents:
diff changeset
111 if (node == node->parent->left) {
4a9a2b1dd6fa nginx-0.0.1-2003-12-04-17:53:00 import
Igor Sysoev <igor@sysoev.ru>
parents:
diff changeset
112 node = node->parent;
207
6e0fef527732 nginx-0.0.1-2003-12-05-20:07:27 import
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parents: 206
diff changeset
113 ngx_rbtree_right_rotate(root, sentinel, node);
205
4a9a2b1dd6fa nginx-0.0.1-2003-12-04-17:53:00 import
Igor Sysoev <igor@sysoev.ru>
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114 }
4a9a2b1dd6fa nginx-0.0.1-2003-12-04-17:53:00 import
Igor Sysoev <igor@sysoev.ru>
parents:
diff changeset
115
4a9a2b1dd6fa nginx-0.0.1-2003-12-04-17:53:00 import
Igor Sysoev <igor@sysoev.ru>
parents:
diff changeset
116 ngx_rbt_black(node->parent);
4a9a2b1dd6fa nginx-0.0.1-2003-12-04-17:53:00 import
Igor Sysoev <igor@sysoev.ru>
parents:
diff changeset
117 ngx_rbt_red(node->parent->parent);
207
6e0fef527732 nginx-0.0.1-2003-12-05-20:07:27 import
Igor Sysoev <igor@sysoev.ru>
parents: 206
diff changeset
118 ngx_rbtree_left_rotate(root, sentinel, node->parent->parent);
205
4a9a2b1dd6fa nginx-0.0.1-2003-12-04-17:53:00 import
Igor Sysoev <igor@sysoev.ru>
parents:
diff changeset
119 }
4a9a2b1dd6fa nginx-0.0.1-2003-12-04-17:53:00 import
Igor Sysoev <igor@sysoev.ru>
parents:
diff changeset
120 }
4a9a2b1dd6fa nginx-0.0.1-2003-12-04-17:53:00 import
Igor Sysoev <igor@sysoev.ru>
parents:
diff changeset
121
4a9a2b1dd6fa nginx-0.0.1-2003-12-04-17:53:00 import
Igor Sysoev <igor@sysoev.ru>
parents:
diff changeset
122 }
4a9a2b1dd6fa nginx-0.0.1-2003-12-04-17:53:00 import
Igor Sysoev <igor@sysoev.ru>
parents:
diff changeset
123
4a9a2b1dd6fa nginx-0.0.1-2003-12-04-17:53:00 import
Igor Sysoev <igor@sysoev.ru>
parents:
diff changeset
124 ngx_rbt_black(*root);
4a9a2b1dd6fa nginx-0.0.1-2003-12-04-17:53:00 import
Igor Sysoev <igor@sysoev.ru>
parents:
diff changeset
125 }
4a9a2b1dd6fa nginx-0.0.1-2003-12-04-17:53:00 import
Igor Sysoev <igor@sysoev.ru>
parents:
diff changeset
126
4a9a2b1dd6fa nginx-0.0.1-2003-12-04-17:53:00 import
Igor Sysoev <igor@sysoev.ru>
parents:
diff changeset
127
207
6e0fef527732 nginx-0.0.1-2003-12-05-20:07:27 import
Igor Sysoev <igor@sysoev.ru>
parents: 206
diff changeset
128 void ngx_rbtree_delete(ngx_rbtree_t **root, ngx_rbtree_t *sentinel,
6e0fef527732 nginx-0.0.1-2003-12-05-20:07:27 import
Igor Sysoev <igor@sysoev.ru>
parents: 206
diff changeset
129 ngx_rbtree_t *node)
205
4a9a2b1dd6fa nginx-0.0.1-2003-12-04-17:53:00 import
Igor Sysoev <igor@sysoev.ru>
parents:
diff changeset
130 {
213
f536f91e8e99 nginx-0.0.1-2003-12-19-15:45:27 import
Igor Sysoev <igor@sysoev.ru>
parents: 212
diff changeset
131 ngx_int_t is_red;
205
4a9a2b1dd6fa nginx-0.0.1-2003-12-04-17:53:00 import
Igor Sysoev <igor@sysoev.ru>
parents:
diff changeset
132 ngx_rbtree_t *subst, *temp, *w;
4a9a2b1dd6fa nginx-0.0.1-2003-12-04-17:53:00 import
Igor Sysoev <igor@sysoev.ru>
parents:
diff changeset
133
4a9a2b1dd6fa nginx-0.0.1-2003-12-04-17:53:00 import
Igor Sysoev <igor@sysoev.ru>
parents:
diff changeset
134 /* a binary tree delete */
4a9a2b1dd6fa nginx-0.0.1-2003-12-04-17:53:00 import
Igor Sysoev <igor@sysoev.ru>
parents:
diff changeset
135
212
679f60139863 nginx-0.0.1-2003-12-19-11:15:11 import
Igor Sysoev <igor@sysoev.ru>
parents: 207
diff changeset
136 if (node->left == sentinel) {
679f60139863 nginx-0.0.1-2003-12-19-11:15:11 import
Igor Sysoev <igor@sysoev.ru>
parents: 207
diff changeset
137 temp = node->right;
679f60139863 nginx-0.0.1-2003-12-19-11:15:11 import
Igor Sysoev <igor@sysoev.ru>
parents: 207
diff changeset
138 subst = node;
679f60139863 nginx-0.0.1-2003-12-19-11:15:11 import
Igor Sysoev <igor@sysoev.ru>
parents: 207
diff changeset
139
679f60139863 nginx-0.0.1-2003-12-19-11:15:11 import
Igor Sysoev <igor@sysoev.ru>
parents: 207
diff changeset
140 } else if (node->right == sentinel) {
679f60139863 nginx-0.0.1-2003-12-19-11:15:11 import
Igor Sysoev <igor@sysoev.ru>
parents: 207
diff changeset
141 temp = node->left;
205
4a9a2b1dd6fa nginx-0.0.1-2003-12-04-17:53:00 import
Igor Sysoev <igor@sysoev.ru>
parents:
diff changeset
142 subst = node;
4a9a2b1dd6fa nginx-0.0.1-2003-12-04-17:53:00 import
Igor Sysoev <igor@sysoev.ru>
parents:
diff changeset
143
4a9a2b1dd6fa nginx-0.0.1-2003-12-04-17:53:00 import
Igor Sysoev <igor@sysoev.ru>
parents:
diff changeset
144 } else {
212
679f60139863 nginx-0.0.1-2003-12-19-11:15:11 import
Igor Sysoev <igor@sysoev.ru>
parents: 207
diff changeset
145 subst = ngx_rbtree_min(node->right, sentinel);
205
4a9a2b1dd6fa nginx-0.0.1-2003-12-04-17:53:00 import
Igor Sysoev <igor@sysoev.ru>
parents:
diff changeset
146
212
679f60139863 nginx-0.0.1-2003-12-19-11:15:11 import
Igor Sysoev <igor@sysoev.ru>
parents: 207
diff changeset
147 if (subst->left != sentinel) {
679f60139863 nginx-0.0.1-2003-12-19-11:15:11 import
Igor Sysoev <igor@sysoev.ru>
parents: 207
diff changeset
148 temp = subst->left;
205
4a9a2b1dd6fa nginx-0.0.1-2003-12-04-17:53:00 import
Igor Sysoev <igor@sysoev.ru>
parents:
diff changeset
149 } else {
212
679f60139863 nginx-0.0.1-2003-12-19-11:15:11 import
Igor Sysoev <igor@sysoev.ru>
parents: 207
diff changeset
150 temp = subst->right;
205
4a9a2b1dd6fa nginx-0.0.1-2003-12-04-17:53:00 import
Igor Sysoev <igor@sysoev.ru>
parents:
diff changeset
151 }
4a9a2b1dd6fa nginx-0.0.1-2003-12-04-17:53:00 import
Igor Sysoev <igor@sysoev.ru>
parents:
diff changeset
152 }
4a9a2b1dd6fa nginx-0.0.1-2003-12-04-17:53:00 import
Igor Sysoev <igor@sysoev.ru>
parents:
diff changeset
153
212
679f60139863 nginx-0.0.1-2003-12-19-11:15:11 import
Igor Sysoev <igor@sysoev.ru>
parents: 207
diff changeset
154 if (subst == *root) {
229
ce6b72fe33fe nginx-0.0.1-2004-01-15-20:51:49 import
Igor Sysoev <igor@sysoev.ru>
parents: 213
diff changeset
155 *root = temp;
ce6b72fe33fe nginx-0.0.1-2004-01-15-20:51:49 import
Igor Sysoev <igor@sysoev.ru>
parents: 213
diff changeset
156 ngx_rbt_black(temp);
ce6b72fe33fe nginx-0.0.1-2004-01-15-20:51:49 import
Igor Sysoev <igor@sysoev.ru>
parents: 213
diff changeset
157
ce6b72fe33fe nginx-0.0.1-2004-01-15-20:51:49 import
Igor Sysoev <igor@sysoev.ru>
parents: 213
diff changeset
158 /* DEBUG stuff */
ce6b72fe33fe nginx-0.0.1-2004-01-15-20:51:49 import
Igor Sysoev <igor@sysoev.ru>
parents: 213
diff changeset
159 node->left = NULL;
ce6b72fe33fe nginx-0.0.1-2004-01-15-20:51:49 import
Igor Sysoev <igor@sysoev.ru>
parents: 213
diff changeset
160 node->right = NULL;
ce6b72fe33fe nginx-0.0.1-2004-01-15-20:51:49 import
Igor Sysoev <igor@sysoev.ru>
parents: 213
diff changeset
161 node->parent = NULL;
ce6b72fe33fe nginx-0.0.1-2004-01-15-20:51:49 import
Igor Sysoev <igor@sysoev.ru>
parents: 213
diff changeset
162 node->key = 0;
ce6b72fe33fe nginx-0.0.1-2004-01-15-20:51:49 import
Igor Sysoev <igor@sysoev.ru>
parents: 213
diff changeset
163
212
679f60139863 nginx-0.0.1-2003-12-19-11:15:11 import
Igor Sysoev <igor@sysoev.ru>
parents: 207
diff changeset
164 return;
205
4a9a2b1dd6fa nginx-0.0.1-2003-12-04-17:53:00 import
Igor Sysoev <igor@sysoev.ru>
parents:
diff changeset
165 }
4a9a2b1dd6fa nginx-0.0.1-2003-12-04-17:53:00 import
Igor Sysoev <igor@sysoev.ru>
parents:
diff changeset
166
213
f536f91e8e99 nginx-0.0.1-2003-12-19-15:45:27 import
Igor Sysoev <igor@sysoev.ru>
parents: 212
diff changeset
167 is_red = ngx_rbt_is_red(subst);
205
4a9a2b1dd6fa nginx-0.0.1-2003-12-04-17:53:00 import
Igor Sysoev <igor@sysoev.ru>
parents:
diff changeset
168
212
679f60139863 nginx-0.0.1-2003-12-19-11:15:11 import
Igor Sysoev <igor@sysoev.ru>
parents: 207
diff changeset
169 if (subst == subst->parent->left) {
205
4a9a2b1dd6fa nginx-0.0.1-2003-12-04-17:53:00 import
Igor Sysoev <igor@sysoev.ru>
parents:
diff changeset
170 subst->parent->left = temp;
4a9a2b1dd6fa nginx-0.0.1-2003-12-04-17:53:00 import
Igor Sysoev <igor@sysoev.ru>
parents:
diff changeset
171
4a9a2b1dd6fa nginx-0.0.1-2003-12-04-17:53:00 import
Igor Sysoev <igor@sysoev.ru>
parents:
diff changeset
172 } else {
4a9a2b1dd6fa nginx-0.0.1-2003-12-04-17:53:00 import
Igor Sysoev <igor@sysoev.ru>
parents:
diff changeset
173 subst->parent->right = temp;
4a9a2b1dd6fa nginx-0.0.1-2003-12-04-17:53:00 import
Igor Sysoev <igor@sysoev.ru>
parents:
diff changeset
174 }
4a9a2b1dd6fa nginx-0.0.1-2003-12-04-17:53:00 import
Igor Sysoev <igor@sysoev.ru>
parents:
diff changeset
175
212
679f60139863 nginx-0.0.1-2003-12-19-11:15:11 import
Igor Sysoev <igor@sysoev.ru>
parents: 207
diff changeset
176 if (subst == node) {
679f60139863 nginx-0.0.1-2003-12-19-11:15:11 import
Igor Sysoev <igor@sysoev.ru>
parents: 207
diff changeset
177
679f60139863 nginx-0.0.1-2003-12-19-11:15:11 import
Igor Sysoev <igor@sysoev.ru>
parents: 207
diff changeset
178 temp->parent = subst->parent;
679f60139863 nginx-0.0.1-2003-12-19-11:15:11 import
Igor Sysoev <igor@sysoev.ru>
parents: 207
diff changeset
179
679f60139863 nginx-0.0.1-2003-12-19-11:15:11 import
Igor Sysoev <igor@sysoev.ru>
parents: 207
diff changeset
180 } else {
679f60139863 nginx-0.0.1-2003-12-19-11:15:11 import
Igor Sysoev <igor@sysoev.ru>
parents: 207
diff changeset
181
679f60139863 nginx-0.0.1-2003-12-19-11:15:11 import
Igor Sysoev <igor@sysoev.ru>
parents: 207
diff changeset
182 if (subst->parent == node) {
679f60139863 nginx-0.0.1-2003-12-19-11:15:11 import
Igor Sysoev <igor@sysoev.ru>
parents: 207
diff changeset
183 temp->parent = subst;
679f60139863 nginx-0.0.1-2003-12-19-11:15:11 import
Igor Sysoev <igor@sysoev.ru>
parents: 207
diff changeset
184
679f60139863 nginx-0.0.1-2003-12-19-11:15:11 import
Igor Sysoev <igor@sysoev.ru>
parents: 207
diff changeset
185 } else {
679f60139863 nginx-0.0.1-2003-12-19-11:15:11 import
Igor Sysoev <igor@sysoev.ru>
parents: 207
diff changeset
186 temp->parent = subst->parent;
679f60139863 nginx-0.0.1-2003-12-19-11:15:11 import
Igor Sysoev <igor@sysoev.ru>
parents: 207
diff changeset
187 }
679f60139863 nginx-0.0.1-2003-12-19-11:15:11 import
Igor Sysoev <igor@sysoev.ru>
parents: 207
diff changeset
188
679f60139863 nginx-0.0.1-2003-12-19-11:15:11 import
Igor Sysoev <igor@sysoev.ru>
parents: 207
diff changeset
189 subst->left = node->left;
679f60139863 nginx-0.0.1-2003-12-19-11:15:11 import
Igor Sysoev <igor@sysoev.ru>
parents: 207
diff changeset
190 subst->right = node->right;
679f60139863 nginx-0.0.1-2003-12-19-11:15:11 import
Igor Sysoev <igor@sysoev.ru>
parents: 207
diff changeset
191 subst->parent = node->parent;
679f60139863 nginx-0.0.1-2003-12-19-11:15:11 import
Igor Sysoev <igor@sysoev.ru>
parents: 207
diff changeset
192 ngx_rbt_copy_color(subst, node);
679f60139863 nginx-0.0.1-2003-12-19-11:15:11 import
Igor Sysoev <igor@sysoev.ru>
parents: 207
diff changeset
193
679f60139863 nginx-0.0.1-2003-12-19-11:15:11 import
Igor Sysoev <igor@sysoev.ru>
parents: 207
diff changeset
194 if (node == *root) {
679f60139863 nginx-0.0.1-2003-12-19-11:15:11 import
Igor Sysoev <igor@sysoev.ru>
parents: 207
diff changeset
195 *root = subst;
679f60139863 nginx-0.0.1-2003-12-19-11:15:11 import
Igor Sysoev <igor@sysoev.ru>
parents: 207
diff changeset
196
679f60139863 nginx-0.0.1-2003-12-19-11:15:11 import
Igor Sysoev <igor@sysoev.ru>
parents: 207
diff changeset
197 } else {
679f60139863 nginx-0.0.1-2003-12-19-11:15:11 import
Igor Sysoev <igor@sysoev.ru>
parents: 207
diff changeset
198 if (node == node->parent->left) {
679f60139863 nginx-0.0.1-2003-12-19-11:15:11 import
Igor Sysoev <igor@sysoev.ru>
parents: 207
diff changeset
199 node->parent->left = subst;
679f60139863 nginx-0.0.1-2003-12-19-11:15:11 import
Igor Sysoev <igor@sysoev.ru>
parents: 207
diff changeset
200 } else {
679f60139863 nginx-0.0.1-2003-12-19-11:15:11 import
Igor Sysoev <igor@sysoev.ru>
parents: 207
diff changeset
201 node->parent->right = subst;
679f60139863 nginx-0.0.1-2003-12-19-11:15:11 import
Igor Sysoev <igor@sysoev.ru>
parents: 207
diff changeset
202 }
679f60139863 nginx-0.0.1-2003-12-19-11:15:11 import
Igor Sysoev <igor@sysoev.ru>
parents: 207
diff changeset
203 }
679f60139863 nginx-0.0.1-2003-12-19-11:15:11 import
Igor Sysoev <igor@sysoev.ru>
parents: 207
diff changeset
204
679f60139863 nginx-0.0.1-2003-12-19-11:15:11 import
Igor Sysoev <igor@sysoev.ru>
parents: 207
diff changeset
205 if (subst->left != sentinel) {
679f60139863 nginx-0.0.1-2003-12-19-11:15:11 import
Igor Sysoev <igor@sysoev.ru>
parents: 207
diff changeset
206 subst->left->parent = subst;
679f60139863 nginx-0.0.1-2003-12-19-11:15:11 import
Igor Sysoev <igor@sysoev.ru>
parents: 207
diff changeset
207 }
679f60139863 nginx-0.0.1-2003-12-19-11:15:11 import
Igor Sysoev <igor@sysoev.ru>
parents: 207
diff changeset
208
679f60139863 nginx-0.0.1-2003-12-19-11:15:11 import
Igor Sysoev <igor@sysoev.ru>
parents: 207
diff changeset
209 if (subst->right != sentinel) {
679f60139863 nginx-0.0.1-2003-12-19-11:15:11 import
Igor Sysoev <igor@sysoev.ru>
parents: 207
diff changeset
210 subst->right->parent = subst;
679f60139863 nginx-0.0.1-2003-12-19-11:15:11 import
Igor Sysoev <igor@sysoev.ru>
parents: 207
diff changeset
211 }
229
ce6b72fe33fe nginx-0.0.1-2004-01-15-20:51:49 import
Igor Sysoev <igor@sysoev.ru>
parents: 213
diff changeset
212
ce6b72fe33fe nginx-0.0.1-2004-01-15-20:51:49 import
Igor Sysoev <igor@sysoev.ru>
parents: 213
diff changeset
213 /* DEBUG stuff */
ce6b72fe33fe nginx-0.0.1-2004-01-15-20:51:49 import
Igor Sysoev <igor@sysoev.ru>
parents: 213
diff changeset
214 node->left = NULL;
ce6b72fe33fe nginx-0.0.1-2004-01-15-20:51:49 import
Igor Sysoev <igor@sysoev.ru>
parents: 213
diff changeset
215 node->right = NULL;
ce6b72fe33fe nginx-0.0.1-2004-01-15-20:51:49 import
Igor Sysoev <igor@sysoev.ru>
parents: 213
diff changeset
216 node->parent = NULL;
ce6b72fe33fe nginx-0.0.1-2004-01-15-20:51:49 import
Igor Sysoev <igor@sysoev.ru>
parents: 213
diff changeset
217 node->key = 0;
205
4a9a2b1dd6fa nginx-0.0.1-2003-12-04-17:53:00 import
Igor Sysoev <igor@sysoev.ru>
parents:
diff changeset
218 }
4a9a2b1dd6fa nginx-0.0.1-2003-12-04-17:53:00 import
Igor Sysoev <igor@sysoev.ru>
parents:
diff changeset
219
213
f536f91e8e99 nginx-0.0.1-2003-12-19-15:45:27 import
Igor Sysoev <igor@sysoev.ru>
parents: 212
diff changeset
220 if (is_red) {
205
4a9a2b1dd6fa nginx-0.0.1-2003-12-04-17:53:00 import
Igor Sysoev <igor@sysoev.ru>
parents:
diff changeset
221 return;
4a9a2b1dd6fa nginx-0.0.1-2003-12-04-17:53:00 import
Igor Sysoev <igor@sysoev.ru>
parents:
diff changeset
222 }
4a9a2b1dd6fa nginx-0.0.1-2003-12-04-17:53:00 import
Igor Sysoev <igor@sysoev.ru>
parents:
diff changeset
223
4a9a2b1dd6fa nginx-0.0.1-2003-12-04-17:53:00 import
Igor Sysoev <igor@sysoev.ru>
parents:
diff changeset
224 /* a delete fixup */
4a9a2b1dd6fa nginx-0.0.1-2003-12-04-17:53:00 import
Igor Sysoev <igor@sysoev.ru>
parents:
diff changeset
225
212
679f60139863 nginx-0.0.1-2003-12-19-11:15:11 import
Igor Sysoev <igor@sysoev.ru>
parents: 207
diff changeset
226 while (temp != *root && ngx_rbt_is_black(temp)) {
679f60139863 nginx-0.0.1-2003-12-19-11:15:11 import
Igor Sysoev <igor@sysoev.ru>
parents: 207
diff changeset
227
205
4a9a2b1dd6fa nginx-0.0.1-2003-12-04-17:53:00 import
Igor Sysoev <igor@sysoev.ru>
parents:
diff changeset
228 if (temp == temp->parent->left) {
4a9a2b1dd6fa nginx-0.0.1-2003-12-04-17:53:00 import
Igor Sysoev <igor@sysoev.ru>
parents:
diff changeset
229 w = temp->parent->right;
4a9a2b1dd6fa nginx-0.0.1-2003-12-04-17:53:00 import
Igor Sysoev <igor@sysoev.ru>
parents:
diff changeset
230
4a9a2b1dd6fa nginx-0.0.1-2003-12-04-17:53:00 import
Igor Sysoev <igor@sysoev.ru>
parents:
diff changeset
231 if (ngx_rbt_is_red(w)) {
4a9a2b1dd6fa nginx-0.0.1-2003-12-04-17:53:00 import
Igor Sysoev <igor@sysoev.ru>
parents:
diff changeset
232 ngx_rbt_black(w);
4a9a2b1dd6fa nginx-0.0.1-2003-12-04-17:53:00 import
Igor Sysoev <igor@sysoev.ru>
parents:
diff changeset
233 ngx_rbt_red(temp->parent);
207
6e0fef527732 nginx-0.0.1-2003-12-05-20:07:27 import
Igor Sysoev <igor@sysoev.ru>
parents: 206
diff changeset
234 ngx_rbtree_left_rotate(root, sentinel, temp->parent);
205
4a9a2b1dd6fa nginx-0.0.1-2003-12-04-17:53:00 import
Igor Sysoev <igor@sysoev.ru>
parents:
diff changeset
235 w = temp->parent->right;
4a9a2b1dd6fa nginx-0.0.1-2003-12-04-17:53:00 import
Igor Sysoev <igor@sysoev.ru>
parents:
diff changeset
236 }
4a9a2b1dd6fa nginx-0.0.1-2003-12-04-17:53:00 import
Igor Sysoev <igor@sysoev.ru>
parents:
diff changeset
237
4a9a2b1dd6fa nginx-0.0.1-2003-12-04-17:53:00 import
Igor Sysoev <igor@sysoev.ru>
parents:
diff changeset
238 if (ngx_rbt_is_black(w->left) && ngx_rbt_is_black(w->right)) {
4a9a2b1dd6fa nginx-0.0.1-2003-12-04-17:53:00 import
Igor Sysoev <igor@sysoev.ru>
parents:
diff changeset
239 ngx_rbt_red(w);
4a9a2b1dd6fa nginx-0.0.1-2003-12-04-17:53:00 import
Igor Sysoev <igor@sysoev.ru>
parents:
diff changeset
240 temp = temp->parent;
4a9a2b1dd6fa nginx-0.0.1-2003-12-04-17:53:00 import
Igor Sysoev <igor@sysoev.ru>
parents:
diff changeset
241
4a9a2b1dd6fa nginx-0.0.1-2003-12-04-17:53:00 import
Igor Sysoev <igor@sysoev.ru>
parents:
diff changeset
242 } else {
4a9a2b1dd6fa nginx-0.0.1-2003-12-04-17:53:00 import
Igor Sysoev <igor@sysoev.ru>
parents:
diff changeset
243 if (ngx_rbt_is_black(w->right)) {
4a9a2b1dd6fa nginx-0.0.1-2003-12-04-17:53:00 import
Igor Sysoev <igor@sysoev.ru>
parents:
diff changeset
244 ngx_rbt_black(w->left);
4a9a2b1dd6fa nginx-0.0.1-2003-12-04-17:53:00 import
Igor Sysoev <igor@sysoev.ru>
parents:
diff changeset
245 ngx_rbt_red(w);
207
6e0fef527732 nginx-0.0.1-2003-12-05-20:07:27 import
Igor Sysoev <igor@sysoev.ru>
parents: 206
diff changeset
246 ngx_rbtree_right_rotate(root, sentinel, w);
205
4a9a2b1dd6fa nginx-0.0.1-2003-12-04-17:53:00 import
Igor Sysoev <igor@sysoev.ru>
parents:
diff changeset
247 w = temp->parent->right;
4a9a2b1dd6fa nginx-0.0.1-2003-12-04-17:53:00 import
Igor Sysoev <igor@sysoev.ru>
parents:
diff changeset
248 }
4a9a2b1dd6fa nginx-0.0.1-2003-12-04-17:53:00 import
Igor Sysoev <igor@sysoev.ru>
parents:
diff changeset
249
4a9a2b1dd6fa nginx-0.0.1-2003-12-04-17:53:00 import
Igor Sysoev <igor@sysoev.ru>
parents:
diff changeset
250 ngx_rbt_copy_color(w, temp->parent);
4a9a2b1dd6fa nginx-0.0.1-2003-12-04-17:53:00 import
Igor Sysoev <igor@sysoev.ru>
parents:
diff changeset
251 ngx_rbt_black(temp->parent);
4a9a2b1dd6fa nginx-0.0.1-2003-12-04-17:53:00 import
Igor Sysoev <igor@sysoev.ru>
parents:
diff changeset
252 ngx_rbt_black(w->right);
207
6e0fef527732 nginx-0.0.1-2003-12-05-20:07:27 import
Igor Sysoev <igor@sysoev.ru>
parents: 206
diff changeset
253 ngx_rbtree_left_rotate(root, sentinel, temp->parent);
205
4a9a2b1dd6fa nginx-0.0.1-2003-12-04-17:53:00 import
Igor Sysoev <igor@sysoev.ru>
parents:
diff changeset
254 temp = *root;
4a9a2b1dd6fa nginx-0.0.1-2003-12-04-17:53:00 import
Igor Sysoev <igor@sysoev.ru>
parents:
diff changeset
255 }
4a9a2b1dd6fa nginx-0.0.1-2003-12-04-17:53:00 import
Igor Sysoev <igor@sysoev.ru>
parents:
diff changeset
256
4a9a2b1dd6fa nginx-0.0.1-2003-12-04-17:53:00 import
Igor Sysoev <igor@sysoev.ru>
parents:
diff changeset
257 } else {
4a9a2b1dd6fa nginx-0.0.1-2003-12-04-17:53:00 import
Igor Sysoev <igor@sysoev.ru>
parents:
diff changeset
258 w = temp->parent->left;
4a9a2b1dd6fa nginx-0.0.1-2003-12-04-17:53:00 import
Igor Sysoev <igor@sysoev.ru>
parents:
diff changeset
259
4a9a2b1dd6fa nginx-0.0.1-2003-12-04-17:53:00 import
Igor Sysoev <igor@sysoev.ru>
parents:
diff changeset
260 if (ngx_rbt_is_red(w)) {
4a9a2b1dd6fa nginx-0.0.1-2003-12-04-17:53:00 import
Igor Sysoev <igor@sysoev.ru>
parents:
diff changeset
261 ngx_rbt_black(w);
4a9a2b1dd6fa nginx-0.0.1-2003-12-04-17:53:00 import
Igor Sysoev <igor@sysoev.ru>
parents:
diff changeset
262 ngx_rbt_red(temp->parent);
207
6e0fef527732 nginx-0.0.1-2003-12-05-20:07:27 import
Igor Sysoev <igor@sysoev.ru>
parents: 206
diff changeset
263 ngx_rbtree_right_rotate(root, sentinel, temp->parent);
205
4a9a2b1dd6fa nginx-0.0.1-2003-12-04-17:53:00 import
Igor Sysoev <igor@sysoev.ru>
parents:
diff changeset
264 w = temp->parent->left;
4a9a2b1dd6fa nginx-0.0.1-2003-12-04-17:53:00 import
Igor Sysoev <igor@sysoev.ru>
parents:
diff changeset
265 }
4a9a2b1dd6fa nginx-0.0.1-2003-12-04-17:53:00 import
Igor Sysoev <igor@sysoev.ru>
parents:
diff changeset
266
213
f536f91e8e99 nginx-0.0.1-2003-12-19-15:45:27 import
Igor Sysoev <igor@sysoev.ru>
parents: 212
diff changeset
267 if (ngx_rbt_is_black(w->left) && ngx_rbt_is_black(w->right)) {
205
4a9a2b1dd6fa nginx-0.0.1-2003-12-04-17:53:00 import
Igor Sysoev <igor@sysoev.ru>
parents:
diff changeset
268 ngx_rbt_red(w);
4a9a2b1dd6fa nginx-0.0.1-2003-12-04-17:53:00 import
Igor Sysoev <igor@sysoev.ru>
parents:
diff changeset
269 temp = temp->parent;
4a9a2b1dd6fa nginx-0.0.1-2003-12-04-17:53:00 import
Igor Sysoev <igor@sysoev.ru>
parents:
diff changeset
270
4a9a2b1dd6fa nginx-0.0.1-2003-12-04-17:53:00 import
Igor Sysoev <igor@sysoev.ru>
parents:
diff changeset
271 } else {
4a9a2b1dd6fa nginx-0.0.1-2003-12-04-17:53:00 import
Igor Sysoev <igor@sysoev.ru>
parents:
diff changeset
272 if (ngx_rbt_is_black(w->left)) {
4a9a2b1dd6fa nginx-0.0.1-2003-12-04-17:53:00 import
Igor Sysoev <igor@sysoev.ru>
parents:
diff changeset
273 ngx_rbt_black(w->right);
4a9a2b1dd6fa nginx-0.0.1-2003-12-04-17:53:00 import
Igor Sysoev <igor@sysoev.ru>
parents:
diff changeset
274 ngx_rbt_red(w);
207
6e0fef527732 nginx-0.0.1-2003-12-05-20:07:27 import
Igor Sysoev <igor@sysoev.ru>
parents: 206
diff changeset
275 ngx_rbtree_left_rotate(root, sentinel, w);
205
4a9a2b1dd6fa nginx-0.0.1-2003-12-04-17:53:00 import
Igor Sysoev <igor@sysoev.ru>
parents:
diff changeset
276 w = temp->parent->left;
4a9a2b1dd6fa nginx-0.0.1-2003-12-04-17:53:00 import
Igor Sysoev <igor@sysoev.ru>
parents:
diff changeset
277 }
4a9a2b1dd6fa nginx-0.0.1-2003-12-04-17:53:00 import
Igor Sysoev <igor@sysoev.ru>
parents:
diff changeset
278
4a9a2b1dd6fa nginx-0.0.1-2003-12-04-17:53:00 import
Igor Sysoev <igor@sysoev.ru>
parents:
diff changeset
279 ngx_rbt_copy_color(w, temp->parent);
4a9a2b1dd6fa nginx-0.0.1-2003-12-04-17:53:00 import
Igor Sysoev <igor@sysoev.ru>
parents:
diff changeset
280 ngx_rbt_black(temp->parent);
4a9a2b1dd6fa nginx-0.0.1-2003-12-04-17:53:00 import
Igor Sysoev <igor@sysoev.ru>
parents:
diff changeset
281 ngx_rbt_black(w->left);
207
6e0fef527732 nginx-0.0.1-2003-12-05-20:07:27 import
Igor Sysoev <igor@sysoev.ru>
parents: 206
diff changeset
282 ngx_rbtree_right_rotate(root, sentinel, temp->parent);
205
4a9a2b1dd6fa nginx-0.0.1-2003-12-04-17:53:00 import
Igor Sysoev <igor@sysoev.ru>
parents:
diff changeset
283 temp = *root;
4a9a2b1dd6fa nginx-0.0.1-2003-12-04-17:53:00 import
Igor Sysoev <igor@sysoev.ru>
parents:
diff changeset
284 }
4a9a2b1dd6fa nginx-0.0.1-2003-12-04-17:53:00 import
Igor Sysoev <igor@sysoev.ru>
parents:
diff changeset
285 }
4a9a2b1dd6fa nginx-0.0.1-2003-12-04-17:53:00 import
Igor Sysoev <igor@sysoev.ru>
parents:
diff changeset
286 }
4a9a2b1dd6fa nginx-0.0.1-2003-12-04-17:53:00 import
Igor Sysoev <igor@sysoev.ru>
parents:
diff changeset
287
4a9a2b1dd6fa nginx-0.0.1-2003-12-04-17:53:00 import
Igor Sysoev <igor@sysoev.ru>
parents:
diff changeset
288 ngx_rbt_black(temp);
4a9a2b1dd6fa nginx-0.0.1-2003-12-04-17:53:00 import
Igor Sysoev <igor@sysoev.ru>
parents:
diff changeset
289 }
4a9a2b1dd6fa nginx-0.0.1-2003-12-04-17:53:00 import
Igor Sysoev <igor@sysoev.ru>
parents:
diff changeset
290
4a9a2b1dd6fa nginx-0.0.1-2003-12-04-17:53:00 import
Igor Sysoev <igor@sysoev.ru>
parents:
diff changeset
291
207
6e0fef527732 nginx-0.0.1-2003-12-05-20:07:27 import
Igor Sysoev <igor@sysoev.ru>
parents: 206
diff changeset
292 ngx_inline void ngx_rbtree_left_rotate(ngx_rbtree_t **root,
6e0fef527732 nginx-0.0.1-2003-12-05-20:07:27 import
Igor Sysoev <igor@sysoev.ru>
parents: 206
diff changeset
293 ngx_rbtree_t *sentinel,
6e0fef527732 nginx-0.0.1-2003-12-05-20:07:27 import
Igor Sysoev <igor@sysoev.ru>
parents: 206
diff changeset
294 ngx_rbtree_t *node)
205
4a9a2b1dd6fa nginx-0.0.1-2003-12-04-17:53:00 import
Igor Sysoev <igor@sysoev.ru>
parents:
diff changeset
295 {
4a9a2b1dd6fa nginx-0.0.1-2003-12-04-17:53:00 import
Igor Sysoev <igor@sysoev.ru>
parents:
diff changeset
296 ngx_rbtree_t *temp;
4a9a2b1dd6fa nginx-0.0.1-2003-12-04-17:53:00 import
Igor Sysoev <igor@sysoev.ru>
parents:
diff changeset
297
4a9a2b1dd6fa nginx-0.0.1-2003-12-04-17:53:00 import
Igor Sysoev <igor@sysoev.ru>
parents:
diff changeset
298 temp = node->right;
4a9a2b1dd6fa nginx-0.0.1-2003-12-04-17:53:00 import
Igor Sysoev <igor@sysoev.ru>
parents:
diff changeset
299 node->right = temp->left;
4a9a2b1dd6fa nginx-0.0.1-2003-12-04-17:53:00 import
Igor Sysoev <igor@sysoev.ru>
parents:
diff changeset
300
207
6e0fef527732 nginx-0.0.1-2003-12-05-20:07:27 import
Igor Sysoev <igor@sysoev.ru>
parents: 206
diff changeset
301 if (temp->left != sentinel) {
205
4a9a2b1dd6fa nginx-0.0.1-2003-12-04-17:53:00 import
Igor Sysoev <igor@sysoev.ru>
parents:
diff changeset
302 temp->left->parent = node;
4a9a2b1dd6fa nginx-0.0.1-2003-12-04-17:53:00 import
Igor Sysoev <igor@sysoev.ru>
parents:
diff changeset
303 }
4a9a2b1dd6fa nginx-0.0.1-2003-12-04-17:53:00 import
Igor Sysoev <igor@sysoev.ru>
parents:
diff changeset
304
4a9a2b1dd6fa nginx-0.0.1-2003-12-04-17:53:00 import
Igor Sysoev <igor@sysoev.ru>
parents:
diff changeset
305 temp->parent = node->parent;
4a9a2b1dd6fa nginx-0.0.1-2003-12-04-17:53:00 import
Igor Sysoev <igor@sysoev.ru>
parents:
diff changeset
306
212
679f60139863 nginx-0.0.1-2003-12-19-11:15:11 import
Igor Sysoev <igor@sysoev.ru>
parents: 207
diff changeset
307 if (node == *root) {
205
4a9a2b1dd6fa nginx-0.0.1-2003-12-04-17:53:00 import
Igor Sysoev <igor@sysoev.ru>
parents:
diff changeset
308 *root = temp;
4a9a2b1dd6fa nginx-0.0.1-2003-12-04-17:53:00 import
Igor Sysoev <igor@sysoev.ru>
parents:
diff changeset
309
4a9a2b1dd6fa nginx-0.0.1-2003-12-04-17:53:00 import
Igor Sysoev <igor@sysoev.ru>
parents:
diff changeset
310 } else if (node == node->parent->left) {
4a9a2b1dd6fa nginx-0.0.1-2003-12-04-17:53:00 import
Igor Sysoev <igor@sysoev.ru>
parents:
diff changeset
311 node->parent->left = temp;
4a9a2b1dd6fa nginx-0.0.1-2003-12-04-17:53:00 import
Igor Sysoev <igor@sysoev.ru>
parents:
diff changeset
312
4a9a2b1dd6fa nginx-0.0.1-2003-12-04-17:53:00 import
Igor Sysoev <igor@sysoev.ru>
parents:
diff changeset
313 } else {
4a9a2b1dd6fa nginx-0.0.1-2003-12-04-17:53:00 import
Igor Sysoev <igor@sysoev.ru>
parents:
diff changeset
314 node->parent->right = temp;
4a9a2b1dd6fa nginx-0.0.1-2003-12-04-17:53:00 import
Igor Sysoev <igor@sysoev.ru>
parents:
diff changeset
315 }
4a9a2b1dd6fa nginx-0.0.1-2003-12-04-17:53:00 import
Igor Sysoev <igor@sysoev.ru>
parents:
diff changeset
316
4a9a2b1dd6fa nginx-0.0.1-2003-12-04-17:53:00 import
Igor Sysoev <igor@sysoev.ru>
parents:
diff changeset
317 temp->left = node;
4a9a2b1dd6fa nginx-0.0.1-2003-12-04-17:53:00 import
Igor Sysoev <igor@sysoev.ru>
parents:
diff changeset
318 node->parent = temp;
4a9a2b1dd6fa nginx-0.0.1-2003-12-04-17:53:00 import
Igor Sysoev <igor@sysoev.ru>
parents:
diff changeset
319 }
4a9a2b1dd6fa nginx-0.0.1-2003-12-04-17:53:00 import
Igor Sysoev <igor@sysoev.ru>
parents:
diff changeset
320
4a9a2b1dd6fa nginx-0.0.1-2003-12-04-17:53:00 import
Igor Sysoev <igor@sysoev.ru>
parents:
diff changeset
321
207
6e0fef527732 nginx-0.0.1-2003-12-05-20:07:27 import
Igor Sysoev <igor@sysoev.ru>
parents: 206
diff changeset
322 ngx_inline void ngx_rbtree_right_rotate(ngx_rbtree_t **root,
6e0fef527732 nginx-0.0.1-2003-12-05-20:07:27 import
Igor Sysoev <igor@sysoev.ru>
parents: 206
diff changeset
323 ngx_rbtree_t *sentinel,
6e0fef527732 nginx-0.0.1-2003-12-05-20:07:27 import
Igor Sysoev <igor@sysoev.ru>
parents: 206
diff changeset
324 ngx_rbtree_t *node)
205
4a9a2b1dd6fa nginx-0.0.1-2003-12-04-17:53:00 import
Igor Sysoev <igor@sysoev.ru>
parents:
diff changeset
325 {
4a9a2b1dd6fa nginx-0.0.1-2003-12-04-17:53:00 import
Igor Sysoev <igor@sysoev.ru>
parents:
diff changeset
326 ngx_rbtree_t *temp;
4a9a2b1dd6fa nginx-0.0.1-2003-12-04-17:53:00 import
Igor Sysoev <igor@sysoev.ru>
parents:
diff changeset
327
4a9a2b1dd6fa nginx-0.0.1-2003-12-04-17:53:00 import
Igor Sysoev <igor@sysoev.ru>
parents:
diff changeset
328 temp = node->left;
4a9a2b1dd6fa nginx-0.0.1-2003-12-04-17:53:00 import
Igor Sysoev <igor@sysoev.ru>
parents:
diff changeset
329 node->left = temp->right;
4a9a2b1dd6fa nginx-0.0.1-2003-12-04-17:53:00 import
Igor Sysoev <igor@sysoev.ru>
parents:
diff changeset
330
207
6e0fef527732 nginx-0.0.1-2003-12-05-20:07:27 import
Igor Sysoev <igor@sysoev.ru>
parents: 206
diff changeset
331 if (temp->right != sentinel) {
205
4a9a2b1dd6fa nginx-0.0.1-2003-12-04-17:53:00 import
Igor Sysoev <igor@sysoev.ru>
parents:
diff changeset
332 temp->right->parent = node;
4a9a2b1dd6fa nginx-0.0.1-2003-12-04-17:53:00 import
Igor Sysoev <igor@sysoev.ru>
parents:
diff changeset
333 }
4a9a2b1dd6fa nginx-0.0.1-2003-12-04-17:53:00 import
Igor Sysoev <igor@sysoev.ru>
parents:
diff changeset
334
4a9a2b1dd6fa nginx-0.0.1-2003-12-04-17:53:00 import
Igor Sysoev <igor@sysoev.ru>
parents:
diff changeset
335 temp->parent = node->parent;
4a9a2b1dd6fa nginx-0.0.1-2003-12-04-17:53:00 import
Igor Sysoev <igor@sysoev.ru>
parents:
diff changeset
336
212
679f60139863 nginx-0.0.1-2003-12-19-11:15:11 import
Igor Sysoev <igor@sysoev.ru>
parents: 207
diff changeset
337 if (node == *root) {
205
4a9a2b1dd6fa nginx-0.0.1-2003-12-04-17:53:00 import
Igor Sysoev <igor@sysoev.ru>
parents:
diff changeset
338 *root = temp;
4a9a2b1dd6fa nginx-0.0.1-2003-12-04-17:53:00 import
Igor Sysoev <igor@sysoev.ru>
parents:
diff changeset
339
4a9a2b1dd6fa nginx-0.0.1-2003-12-04-17:53:00 import
Igor Sysoev <igor@sysoev.ru>
parents:
diff changeset
340 } else if (node == node->parent->right) {
4a9a2b1dd6fa nginx-0.0.1-2003-12-04-17:53:00 import
Igor Sysoev <igor@sysoev.ru>
parents:
diff changeset
341 node->parent->right = temp;
4a9a2b1dd6fa nginx-0.0.1-2003-12-04-17:53:00 import
Igor Sysoev <igor@sysoev.ru>
parents:
diff changeset
342
4a9a2b1dd6fa nginx-0.0.1-2003-12-04-17:53:00 import
Igor Sysoev <igor@sysoev.ru>
parents:
diff changeset
343 } else {
4a9a2b1dd6fa nginx-0.0.1-2003-12-04-17:53:00 import
Igor Sysoev <igor@sysoev.ru>
parents:
diff changeset
344 node->parent->left = temp;
4a9a2b1dd6fa nginx-0.0.1-2003-12-04-17:53:00 import
Igor Sysoev <igor@sysoev.ru>
parents:
diff changeset
345 }
4a9a2b1dd6fa nginx-0.0.1-2003-12-04-17:53:00 import
Igor Sysoev <igor@sysoev.ru>
parents:
diff changeset
346
4a9a2b1dd6fa nginx-0.0.1-2003-12-04-17:53:00 import
Igor Sysoev <igor@sysoev.ru>
parents:
diff changeset
347 temp->right = node;
4a9a2b1dd6fa nginx-0.0.1-2003-12-04-17:53:00 import
Igor Sysoev <igor@sysoev.ru>
parents:
diff changeset
348 node->parent = temp;
4a9a2b1dd6fa nginx-0.0.1-2003-12-04-17:53:00 import
Igor Sysoev <igor@sysoev.ru>
parents:
diff changeset
349 }