Mercurial > hg > nginx

annotate src/core/ngx_rbtree.c @ 1023:68cc5e2e1a5d

Find changesets by keywords (author, files, the commit message), revision number or hash, or revset expression.
make global the rbtree color handling macros
author Igor Sysoev <igor@sysoev.ru>
date Fri, 12 Jan 2007 19:48:30 +0000
parents 4924b71d77f6
children 4fc402c3ec73
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
Igor Sysoev <igor@sysoev.ru>
parents: 229
diff changeset
1
da8c5707af39 nginx-0.1.0-2004-09-28-12:34:51 import; set copyright and remove unused files
Igor Sysoev <igor@sysoev.ru>
parents: 229
diff changeset
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
Igor Sysoev <igor@sysoev.ru>
parents: 229
diff changeset
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
Igor Sysoev <igor@sysoev.ru>
parents:
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6
4a9a2b1dd6fa nginx-0.0.1-2003-12-04-17:53:00 import
Igor Sysoev <igor@sysoev.ru>
parents:
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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:
diff changeset
8 #include <ngx_core.h>
4a9a2b1dd6fa nginx-0.0.1-2003-12-04-17:53:00 import
Igor Sysoev <igor@sysoev.ru>
parents:
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9
4a9a2b1dd6fa nginx-0.0.1-2003-12-04-17:53:00 import
Igor Sysoev <igor@sysoev.ru>
parents:
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10
4a9a2b1dd6fa nginx-0.0.1-2003-12-04-17:53:00 import
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11 /*
559
c1f965ef9718 nginx-0.3.1-RELEASE import
Igor Sysoev <igor@sysoev.ru>
parents: 557
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12 * The red-black tree code is based on the algorithm described in
c1f965ef9718 nginx-0.3.1-RELEASE import
Igor Sysoev <igor@sysoev.ru>
parents: 557
diff changeset
13 * the "Introduction to Algorithms" by Cormen, Leiserson and Rivest.
205
4a9a2b1dd6fa nginx-0.0.1-2003-12-04-17:53:00 import
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parents:
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14 */
4a9a2b1dd6fa nginx-0.0.1-2003-12-04-17:53:00 import
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15
4a9a2b1dd6fa nginx-0.0.1-2003-12-04-17:53:00 import
Igor Sysoev <igor@sysoev.ru>
parents:
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16
559
c1f965ef9718 nginx-0.3.1-RELEASE import
Igor Sysoev <igor@sysoev.ru>
parents: 557
diff changeset
17 static ngx_inline void ngx_rbtree_left_rotate(ngx_rbtree_node_t **root,
c1f965ef9718 nginx-0.3.1-RELEASE import
Igor Sysoev <igor@sysoev.ru>
parents: 557
diff changeset
18 ngx_rbtree_node_t *sentinel, ngx_rbtree_node_t *node);
c1f965ef9718 nginx-0.3.1-RELEASE import
Igor Sysoev <igor@sysoev.ru>
parents: 557
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19 static ngx_inline void ngx_rbtree_right_rotate(ngx_rbtree_node_t **root,
c1f965ef9718 nginx-0.3.1-RELEASE import
Igor Sysoev <igor@sysoev.ru>
parents: 557
diff changeset
20 ngx_rbtree_node_t *sentinel, ngx_rbtree_node_t *node);
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
Igor Sysoev <igor@sysoev.ru>
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22
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975f62e77f02 nginx-0.1.21-RELEASE import
Igor Sysoev <igor@sysoev.ru>
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23 void
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c1f965ef9718 nginx-0.3.1-RELEASE import
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parents: 557
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24 ngx_rbtree_insert(ngx_thread_volatile ngx_rbtree_t *tree,
c1f965ef9718 nginx-0.3.1-RELEASE import
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parents: 557
diff changeset
25 ngx_rbtree_node_t *node)
205
4a9a2b1dd6fa nginx-0.0.1-2003-12-04-17:53:00 import
Igor Sysoev <igor@sysoev.ru>
parents:
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26 {
559
c1f965ef9718 nginx-0.3.1-RELEASE import
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parents: 557
diff changeset
27 ngx_rbtree_node_t **root, *temp, *sentinel;
205
4a9a2b1dd6fa nginx-0.0.1-2003-12-04-17:53:00 import
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28
4a9a2b1dd6fa nginx-0.0.1-2003-12-04-17:53:00 import
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parents:
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29 /* a binary tree insert */
4a9a2b1dd6fa nginx-0.0.1-2003-12-04-17:53:00 import
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parents:
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30
559
c1f965ef9718 nginx-0.3.1-RELEASE import
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31 root = (ngx_rbtree_node_t **) &tree->root;
c1f965ef9718 nginx-0.3.1-RELEASE import
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parents: 557
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32 sentinel = tree->sentinel;
c1f965ef9718 nginx-0.3.1-RELEASE import
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33
207
6e0fef527732 nginx-0.0.1-2003-12-05-20:07:27 import
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parents: 206
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34 if (*root == sentinel) {
212
679f60139863 nginx-0.0.1-2003-12-19-11:15:11 import
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parents: 207
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35 node->parent = NULL;
207
6e0fef527732 nginx-0.0.1-2003-12-05-20:07:27 import
Igor Sysoev <igor@sysoev.ru>
parents: 206
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36 node->left = sentinel;
6e0fef527732 nginx-0.0.1-2003-12-05-20:07:27 import
Igor Sysoev <igor@sysoev.ru>
parents: 206
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37 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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38 ngx_rbt_black(node);
4a9a2b1dd6fa nginx-0.0.1-2003-12-04-17:53:00 import
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parents:
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39 *root = node;
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40
4a9a2b1dd6fa nginx-0.0.1-2003-12-04-17:53:00 import
Igor Sysoev <igor@sysoev.ru>
parents:
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41 return;
4a9a2b1dd6fa nginx-0.0.1-2003-12-04-17:53:00 import
Igor Sysoev <igor@sysoev.ru>
parents:
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42 }
4a9a2b1dd6fa nginx-0.0.1-2003-12-04-17:53:00 import
Igor Sysoev <igor@sysoev.ru>
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43
853
a7c8cbb4c55f rbtree insert procedure
Igor Sysoev <igor@sysoev.ru>
parents: 852
diff changeset
44 tree->insert(*root, node, sentinel);
205
4a9a2b1dd6fa nginx-0.0.1-2003-12-04-17:53:00 import
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parents:
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45
4a9a2b1dd6fa nginx-0.0.1-2003-12-04-17:53:00 import
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parents:
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46 /* re-balance tree */
4a9a2b1dd6fa nginx-0.0.1-2003-12-04-17:53:00 import
Igor Sysoev <igor@sysoev.ru>
parents:
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47
212
679f60139863 nginx-0.0.1-2003-12-19-11:15:11 import
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parents: 207
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48 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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49
4a9a2b1dd6fa nginx-0.0.1-2003-12-04-17:53:00 import
Igor Sysoev <igor@sysoev.ru>
parents:
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50 if (node->parent == node->parent->parent->left) {
4a9a2b1dd6fa nginx-0.0.1-2003-12-04-17:53:00 import
Igor Sysoev <igor@sysoev.ru>
parents:
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51 temp = node->parent->parent->right;
4a9a2b1dd6fa nginx-0.0.1-2003-12-04-17:53:00 import
Igor Sysoev <igor@sysoev.ru>
parents:
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52
4a9a2b1dd6fa nginx-0.0.1-2003-12-04-17:53:00 import
Igor Sysoev <igor@sysoev.ru>
parents:
diff changeset
53 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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54 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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55 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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56 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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57 node = node->parent->parent;
4a9a2b1dd6fa nginx-0.0.1-2003-12-04-17:53:00 import
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58
4a9a2b1dd6fa nginx-0.0.1-2003-12-04-17:53:00 import
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59 } else {
4a9a2b1dd6fa nginx-0.0.1-2003-12-04-17:53:00 import
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parents:
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60 if (node == node->parent->right) {
4a9a2b1dd6fa nginx-0.0.1-2003-12-04-17:53:00 import
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parents:
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61 node = node->parent;
207
6e0fef527732 nginx-0.0.1-2003-12-05-20:07:27 import
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parents: 206
diff changeset
62 ngx_rbtree_left_rotate(root, sentinel, node);
205
4a9a2b1dd6fa nginx-0.0.1-2003-12-04-17:53:00 import
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63 }
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 ngx_rbt_black(node->parent);
4a9a2b1dd6fa nginx-0.0.1-2003-12-04-17:53:00 import
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66 ngx_rbt_red(node->parent->parent);
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6e0fef527732 nginx-0.0.1-2003-12-05-20:07:27 import
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parents: 206
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67 ngx_rbtree_right_rotate(root, sentinel, node->parent->parent);
205
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 } else {
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71 temp = node->parent->parent->left;
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72
4a9a2b1dd6fa nginx-0.0.1-2003-12-04-17:53:00 import
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parents:
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73 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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74 ngx_rbt_black(node->parent);
4a9a2b1dd6fa nginx-0.0.1-2003-12-04-17:53:00 import
Igor Sysoev <igor@sysoev.ru>
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75 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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76 ngx_rbt_red(node->parent->parent);
4a9a2b1dd6fa nginx-0.0.1-2003-12-04-17:53:00 import
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77 node = node->parent->parent;
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parents:
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78
4a9a2b1dd6fa nginx-0.0.1-2003-12-04-17:53:00 import
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79 } else {
4a9a2b1dd6fa nginx-0.0.1-2003-12-04-17:53:00 import
Igor Sysoev <igor@sysoev.ru>
parents:
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80 if (node == node->parent->left) {
4a9a2b1dd6fa nginx-0.0.1-2003-12-04-17:53:00 import
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parents:
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81 node = node->parent;
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6e0fef527732 nginx-0.0.1-2003-12-05-20:07:27 import
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parents: 206
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82 ngx_rbtree_right_rotate(root, sentinel, node);
205
4a9a2b1dd6fa nginx-0.0.1-2003-12-04-17:53:00 import
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parents:
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83 }
4a9a2b1dd6fa nginx-0.0.1-2003-12-04-17:53:00 import
Igor Sysoev <igor@sysoev.ru>
parents:
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84
4a9a2b1dd6fa nginx-0.0.1-2003-12-04-17:53:00 import
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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_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
87 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
88 }
4a9a2b1dd6fa nginx-0.0.1-2003-12-04-17:53:00 import
Igor Sysoev <igor@sysoev.ru>
parents:
diff changeset
89 }
4a9a2b1dd6fa nginx-0.0.1-2003-12-04-17:53:00 import
Igor Sysoev <igor@sysoev.ru>
parents:
diff changeset
90 }
4a9a2b1dd6fa nginx-0.0.1-2003-12-04-17:53:00 import
Igor Sysoev <igor@sysoev.ru>
parents:
diff changeset
91
4a9a2b1dd6fa nginx-0.0.1-2003-12-04-17:53:00 import
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92 ngx_rbt_black(*root);
4a9a2b1dd6fa nginx-0.0.1-2003-12-04-17:53:00 import
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parents:
diff changeset
93 }
4a9a2b1dd6fa nginx-0.0.1-2003-12-04-17:53:00 import
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parents:
diff changeset
94
4a9a2b1dd6fa nginx-0.0.1-2003-12-04-17:53:00 import
Igor Sysoev <igor@sysoev.ru>
parents:
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95
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975f62e77f02 nginx-0.1.21-RELEASE import
Igor Sysoev <igor@sysoev.ru>
parents: 467
diff changeset
96 void
861
4924b71d77f6 ngx_rbtree_insert_value()
Igor Sysoev <igor@sysoev.ru>
parents: 853
diff changeset
97 ngx_rbtree_insert_value(ngx_rbtree_node_t *temp, ngx_rbtree_node_t *node,
4924b71d77f6 ngx_rbtree_insert_value()
Igor Sysoev <igor@sysoev.ru>
parents: 853
diff changeset
98 ngx_rbtree_node_t *sentinel)
4924b71d77f6 ngx_rbtree_insert_value()
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parents: 853
diff changeset
99 {
4924b71d77f6 ngx_rbtree_insert_value()
Igor Sysoev <igor@sysoev.ru>
parents: 853
diff changeset
100 for ( ;; ) {
4924b71d77f6 ngx_rbtree_insert_value()
Igor Sysoev <igor@sysoev.ru>
parents: 853
diff changeset
101
4924b71d77f6 ngx_rbtree_insert_value()
Igor Sysoev <igor@sysoev.ru>
parents: 853
diff changeset
102 if (node->key < temp->key) {
4924b71d77f6 ngx_rbtree_insert_value()
Igor Sysoev <igor@sysoev.ru>
parents: 853
diff changeset
103
4924b71d77f6 ngx_rbtree_insert_value()
Igor Sysoev <igor@sysoev.ru>
parents: 853
diff changeset
104 if (temp->left == sentinel) {
4924b71d77f6 ngx_rbtree_insert_value()
Igor Sysoev <igor@sysoev.ru>
parents: 853
diff changeset
105 temp->left = node;
4924b71d77f6 ngx_rbtree_insert_value()
Igor Sysoev <igor@sysoev.ru>
parents: 853
diff changeset
106 break;
4924b71d77f6 ngx_rbtree_insert_value()
Igor Sysoev <igor@sysoev.ru>
parents: 853
diff changeset
107 }
4924b71d77f6 ngx_rbtree_insert_value()
Igor Sysoev <igor@sysoev.ru>
parents: 853
diff changeset
108
4924b71d77f6 ngx_rbtree_insert_value()
Igor Sysoev <igor@sysoev.ru>
parents: 853
diff changeset
109 temp = temp->left;
4924b71d77f6 ngx_rbtree_insert_value()
Igor Sysoev <igor@sysoev.ru>
parents: 853
diff changeset
110
4924b71d77f6 ngx_rbtree_insert_value()
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parents: 853
diff changeset
111 } else {
4924b71d77f6 ngx_rbtree_insert_value()
Igor Sysoev <igor@sysoev.ru>
parents: 853
diff changeset
112
4924b71d77f6 ngx_rbtree_insert_value()
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parents: 853
diff changeset
113 if (temp->right == sentinel) {
4924b71d77f6 ngx_rbtree_insert_value()
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parents: 853
diff changeset
114 temp->right = node;
4924b71d77f6 ngx_rbtree_insert_value()
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parents: 853
diff changeset
115 break;
4924b71d77f6 ngx_rbtree_insert_value()
Igor Sysoev <igor@sysoev.ru>
parents: 853
diff changeset
116 }
4924b71d77f6 ngx_rbtree_insert_value()
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parents: 853
diff changeset
117
4924b71d77f6 ngx_rbtree_insert_value()
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parents: 853
diff changeset
118 temp = temp->right;
4924b71d77f6 ngx_rbtree_insert_value()
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parents: 853
diff changeset
119 }
4924b71d77f6 ngx_rbtree_insert_value()
Igor Sysoev <igor@sysoev.ru>
parents: 853
diff changeset
120 }
4924b71d77f6 ngx_rbtree_insert_value()
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parents: 853
diff changeset
121
4924b71d77f6 ngx_rbtree_insert_value()
Igor Sysoev <igor@sysoev.ru>
parents: 853
diff changeset
122 node->parent = temp;
4924b71d77f6 ngx_rbtree_insert_value()
Igor Sysoev <igor@sysoev.ru>
parents: 853
diff changeset
123 node->left = sentinel;
4924b71d77f6 ngx_rbtree_insert_value()
Igor Sysoev <igor@sysoev.ru>
parents: 853
diff changeset
124 node->right = sentinel;
4924b71d77f6 ngx_rbtree_insert_value()
Igor Sysoev <igor@sysoev.ru>
parents: 853
diff changeset
125 ngx_rbt_red(node);
4924b71d77f6 ngx_rbtree_insert_value()
Igor Sysoev <igor@sysoev.ru>
parents: 853
diff changeset
126 }
4924b71d77f6 ngx_rbtree_insert_value()
Igor Sysoev <igor@sysoev.ru>
parents: 853
diff changeset
127
4924b71d77f6 ngx_rbtree_insert_value()
Igor Sysoev <igor@sysoev.ru>
parents: 853
diff changeset
128
4924b71d77f6 ngx_rbtree_insert_value()
Igor Sysoev <igor@sysoev.ru>
parents: 853
diff changeset
129 void
853
a7c8cbb4c55f rbtree insert procedure
Igor Sysoev <igor@sysoev.ru>
parents: 852
diff changeset
130 ngx_rbtree_insert_timer_value(ngx_rbtree_node_t *temp, ngx_rbtree_node_t *node,
a7c8cbb4c55f rbtree insert procedure
Igor Sysoev <igor@sysoev.ru>
parents: 852
diff changeset
131 ngx_rbtree_node_t *sentinel)
a7c8cbb4c55f rbtree insert procedure
Igor Sysoev <igor@sysoev.ru>
parents: 852
diff changeset
132 {
a7c8cbb4c55f rbtree insert procedure
Igor Sysoev <igor@sysoev.ru>
parents: 852
diff changeset
133 for ( ;; ) {
a7c8cbb4c55f rbtree insert procedure
Igor Sysoev <igor@sysoev.ru>
parents: 852
diff changeset
134
a7c8cbb4c55f rbtree insert procedure
Igor Sysoev <igor@sysoev.ru>
parents: 852
diff changeset
135 /*
a7c8cbb4c55f rbtree insert procedure
Igor Sysoev <igor@sysoev.ru>
parents: 852
diff changeset
136 * Timer values
a7c8cbb4c55f rbtree insert procedure
Igor Sysoev <igor@sysoev.ru>
parents: 852
diff changeset
137 * 1) are spread in small range, usually several minutes,
a7c8cbb4c55f rbtree insert procedure
Igor Sysoev <igor@sysoev.ru>
parents: 852
diff changeset
138 * 2) and overflow each 49 days, if milliseconds are stored in 32 bits.
a7c8cbb4c55f rbtree insert procedure
Igor Sysoev <igor@sysoev.ru>
parents: 852
diff changeset
139 * The comparison takes into account that overflow.
a7c8cbb4c55f rbtree insert procedure
Igor Sysoev <igor@sysoev.ru>
parents: 852
diff changeset
140 */
a7c8cbb4c55f rbtree insert procedure
Igor Sysoev <igor@sysoev.ru>
parents: 852
diff changeset
141
a7c8cbb4c55f rbtree insert procedure
Igor Sysoev <igor@sysoev.ru>
parents: 852
diff changeset
142 if ((ngx_rbtree_key_int_t) node->key - (ngx_rbtree_key_int_t) temp->key
a7c8cbb4c55f rbtree insert procedure
Igor Sysoev <igor@sysoev.ru>
parents: 852
diff changeset
143 < 0)
a7c8cbb4c55f rbtree insert procedure
Igor Sysoev <igor@sysoev.ru>
parents: 852
diff changeset
144 {
a7c8cbb4c55f rbtree insert procedure
Igor Sysoev <igor@sysoev.ru>
parents: 852
diff changeset
145 /* node->key < temp->key */
a7c8cbb4c55f rbtree insert procedure
Igor Sysoev <igor@sysoev.ru>
parents: 852
diff changeset
146
a7c8cbb4c55f rbtree insert procedure
Igor Sysoev <igor@sysoev.ru>
parents: 852
diff changeset
147 if (temp->left == sentinel) {
a7c8cbb4c55f rbtree insert procedure
Igor Sysoev <igor@sysoev.ru>
parents: 852
diff changeset
148 temp->left = node;
a7c8cbb4c55f rbtree insert procedure
Igor Sysoev <igor@sysoev.ru>
parents: 852
diff changeset
149 break;
a7c8cbb4c55f rbtree insert procedure
Igor Sysoev <igor@sysoev.ru>
parents: 852
diff changeset
150 }
a7c8cbb4c55f rbtree insert procedure
Igor Sysoev <igor@sysoev.ru>
parents: 852
diff changeset
151
a7c8cbb4c55f rbtree insert procedure
Igor Sysoev <igor@sysoev.ru>
parents: 852
diff changeset
152 temp = temp->left;
a7c8cbb4c55f rbtree insert procedure
Igor Sysoev <igor@sysoev.ru>
parents: 852
diff changeset
153
a7c8cbb4c55f rbtree insert procedure
Igor Sysoev <igor@sysoev.ru>
parents: 852
diff changeset
154 } else {
a7c8cbb4c55f rbtree insert procedure
Igor Sysoev <igor@sysoev.ru>
parents: 852
diff changeset
155
a7c8cbb4c55f rbtree insert procedure
Igor Sysoev <igor@sysoev.ru>
parents: 852
diff changeset
156 if (temp->right == sentinel) {
a7c8cbb4c55f rbtree insert procedure
Igor Sysoev <igor@sysoev.ru>
parents: 852
diff changeset
157 temp->right = node;
a7c8cbb4c55f rbtree insert procedure
Igor Sysoev <igor@sysoev.ru>
parents: 852
diff changeset
158 break;
a7c8cbb4c55f rbtree insert procedure
Igor Sysoev <igor@sysoev.ru>
parents: 852
diff changeset
159 }
a7c8cbb4c55f rbtree insert procedure
Igor Sysoev <igor@sysoev.ru>
parents: 852
diff changeset
160
a7c8cbb4c55f rbtree insert procedure
Igor Sysoev <igor@sysoev.ru>
parents: 852
diff changeset
161 temp = temp->right;
a7c8cbb4c55f rbtree insert procedure
Igor Sysoev <igor@sysoev.ru>
parents: 852
diff changeset
162 }
a7c8cbb4c55f rbtree insert procedure
Igor Sysoev <igor@sysoev.ru>
parents: 852
diff changeset
163 }
a7c8cbb4c55f rbtree insert procedure
Igor Sysoev <igor@sysoev.ru>
parents: 852
diff changeset
164
a7c8cbb4c55f rbtree insert procedure
Igor Sysoev <igor@sysoev.ru>
parents: 852
diff changeset
165 node->parent = temp;
a7c8cbb4c55f rbtree insert procedure
Igor Sysoev <igor@sysoev.ru>
parents: 852
diff changeset
166 node->left = sentinel;
a7c8cbb4c55f rbtree insert procedure
Igor Sysoev <igor@sysoev.ru>
parents: 852
diff changeset
167 node->right = sentinel;
a7c8cbb4c55f rbtree insert procedure
Igor Sysoev <igor@sysoev.ru>
parents: 852
diff changeset
168 ngx_rbt_red(node);
a7c8cbb4c55f rbtree insert procedure
Igor Sysoev <igor@sysoev.ru>
parents: 852
diff changeset
169 }
a7c8cbb4c55f rbtree insert procedure
Igor Sysoev <igor@sysoev.ru>
parents: 852
diff changeset
170
a7c8cbb4c55f rbtree insert procedure
Igor Sysoev <igor@sysoev.ru>
parents: 852
diff changeset
171
a7c8cbb4c55f rbtree insert procedure
Igor Sysoev <igor@sysoev.ru>
parents: 852
diff changeset
172 void
559
c1f965ef9718 nginx-0.3.1-RELEASE import
Igor Sysoev <igor@sysoev.ru>
parents: 557
diff changeset
173 ngx_rbtree_delete(ngx_thread_volatile ngx_rbtree_t *tree,
c1f965ef9718 nginx-0.3.1-RELEASE import
Igor Sysoev <igor@sysoev.ru>
parents: 557
diff changeset
174 ngx_rbtree_node_t *node)
205
4a9a2b1dd6fa nginx-0.0.1-2003-12-04-17:53:00 import
Igor Sysoev <igor@sysoev.ru>
parents:
diff changeset
175 {
853
a7c8cbb4c55f rbtree insert procedure
Igor Sysoev <igor@sysoev.ru>
parents: 852
diff changeset
176 ngx_uint_t red;
559
c1f965ef9718 nginx-0.3.1-RELEASE import
Igor Sysoev <igor@sysoev.ru>
parents: 557
diff changeset
177 ngx_rbtree_node_t **root, *sentinel, *subst, *temp, *w;
205
4a9a2b1dd6fa nginx-0.0.1-2003-12-04-17:53:00 import
Igor Sysoev <igor@sysoev.ru>
parents:
diff changeset
178
4a9a2b1dd6fa nginx-0.0.1-2003-12-04-17:53:00 import
Igor Sysoev <igor@sysoev.ru>
parents:
diff changeset
179 /* a binary tree delete */
4a9a2b1dd6fa nginx-0.0.1-2003-12-04-17:53:00 import
Igor Sysoev <igor@sysoev.ru>
parents:
diff changeset
180
559
c1f965ef9718 nginx-0.3.1-RELEASE import
Igor Sysoev <igor@sysoev.ru>
parents: 557
diff changeset
181 root = (ngx_rbtree_node_t **) &tree->root;
c1f965ef9718 nginx-0.3.1-RELEASE import
Igor Sysoev <igor@sysoev.ru>
parents: 557
diff changeset
182 sentinel = tree->sentinel;
c1f965ef9718 nginx-0.3.1-RELEASE import
Igor Sysoev <igor@sysoev.ru>
parents: 557
diff changeset
183
212
679f60139863 nginx-0.0.1-2003-12-19-11:15:11 import
Igor Sysoev <igor@sysoev.ru>
parents: 207
diff changeset
184 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
185 temp = node->right;
679f60139863 nginx-0.0.1-2003-12-19-11:15:11 import
Igor Sysoev <igor@sysoev.ru>
parents: 207
diff changeset
186 subst = node;
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 } 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
189 temp = node->left;
205
4a9a2b1dd6fa nginx-0.0.1-2003-12-04-17:53:00 import
Igor Sysoev <igor@sysoev.ru>
parents:
diff changeset
190 subst = node;
4a9a2b1dd6fa nginx-0.0.1-2003-12-04-17:53:00 import
Igor Sysoev <igor@sysoev.ru>
parents:
diff changeset
191
4a9a2b1dd6fa nginx-0.0.1-2003-12-04-17:53:00 import
Igor Sysoev <igor@sysoev.ru>
parents:
diff changeset
192 } else {
212
679f60139863 nginx-0.0.1-2003-12-19-11:15:11 import
Igor Sysoev <igor@sysoev.ru>
parents: 207
diff changeset
193 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
194
212
679f60139863 nginx-0.0.1-2003-12-19-11:15:11 import
Igor Sysoev <igor@sysoev.ru>
parents: 207
diff changeset
195 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
196 temp = subst->left;
205
4a9a2b1dd6fa nginx-0.0.1-2003-12-04-17:53:00 import
Igor Sysoev <igor@sysoev.ru>
parents:
diff changeset
197 } else {
212
679f60139863 nginx-0.0.1-2003-12-19-11:15:11 import
Igor Sysoev <igor@sysoev.ru>
parents: 207
diff changeset
198 temp = subst->right;
205
4a9a2b1dd6fa nginx-0.0.1-2003-12-04-17:53:00 import
Igor Sysoev <igor@sysoev.ru>
parents:
diff changeset
199 }
4a9a2b1dd6fa nginx-0.0.1-2003-12-04-17:53:00 import
Igor Sysoev <igor@sysoev.ru>
parents:
diff changeset
200 }
4a9a2b1dd6fa nginx-0.0.1-2003-12-04-17:53:00 import
Igor Sysoev <igor@sysoev.ru>
parents:
diff changeset
201
212
679f60139863 nginx-0.0.1-2003-12-19-11:15:11 import
Igor Sysoev <igor@sysoev.ru>
parents: 207
diff changeset
202 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
203 *root = temp;
ce6b72fe33fe nginx-0.0.1-2004-01-15-20:51:49 import
Igor Sysoev <igor@sysoev.ru>
parents: 213
diff changeset
204 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
205
ce6b72fe33fe nginx-0.0.1-2004-01-15-20:51:49 import
Igor Sysoev <igor@sysoev.ru>
parents: 213
diff changeset
206 /* DEBUG stuff */
ce6b72fe33fe nginx-0.0.1-2004-01-15-20:51:49 import
Igor Sysoev <igor@sysoev.ru>
parents: 213
diff changeset
207 node->left = NULL;
ce6b72fe33fe nginx-0.0.1-2004-01-15-20:51:49 import
Igor Sysoev <igor@sysoev.ru>
parents: 213
diff changeset
208 node->right = NULL;
ce6b72fe33fe nginx-0.0.1-2004-01-15-20:51:49 import
Igor Sysoev <igor@sysoev.ru>
parents: 213
diff changeset
209 node->parent = NULL;
ce6b72fe33fe nginx-0.0.1-2004-01-15-20:51:49 import
Igor Sysoev <igor@sysoev.ru>
parents: 213
diff changeset
210 node->key = 0;
ce6b72fe33fe nginx-0.0.1-2004-01-15-20:51:49 import
Igor Sysoev <igor@sysoev.ru>
parents: 213
diff changeset
211
212
679f60139863 nginx-0.0.1-2003-12-19-11:15:11 import
Igor Sysoev <igor@sysoev.ru>
parents: 207
diff changeset
212 return;
205
4a9a2b1dd6fa nginx-0.0.1-2003-12-04-17:53:00 import
Igor Sysoev <igor@sysoev.ru>
parents:
diff changeset
213 }
4a9a2b1dd6fa nginx-0.0.1-2003-12-04-17:53:00 import
Igor Sysoev <igor@sysoev.ru>
parents:
diff changeset
214
852
629b5e4f8931 change variable name
Igor Sysoev <igor@sysoev.ru>
parents: 826
diff changeset
215 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
216
212
679f60139863 nginx-0.0.1-2003-12-19-11:15:11 import
Igor Sysoev <igor@sysoev.ru>
parents: 207
diff changeset
217 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
218 subst->parent->left = temp;
4a9a2b1dd6fa nginx-0.0.1-2003-12-04-17:53:00 import
Igor Sysoev <igor@sysoev.ru>
parents:
diff changeset
219
4a9a2b1dd6fa nginx-0.0.1-2003-12-04-17:53:00 import
Igor Sysoev <igor@sysoev.ru>
parents:
diff changeset
220 } else {
4a9a2b1dd6fa nginx-0.0.1-2003-12-04-17:53:00 import
Igor Sysoev <igor@sysoev.ru>
parents:
diff changeset
221 subst->parent->right = temp;
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
212
679f60139863 nginx-0.0.1-2003-12-19-11:15:11 import
Igor Sysoev <igor@sysoev.ru>
parents: 207
diff changeset
224 if (subst == node) {
679f60139863 nginx-0.0.1-2003-12-19-11:15:11 import
Igor Sysoev <igor@sysoev.ru>
parents: 207
diff changeset
225
679f60139863 nginx-0.0.1-2003-12-19-11:15:11 import
Igor Sysoev <igor@sysoev.ru>
parents: 207
diff changeset
226 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
227
679f60139863 nginx-0.0.1-2003-12-19-11:15:11 import
Igor Sysoev <igor@sysoev.ru>
parents: 207
diff changeset
228 } else {
679f60139863 nginx-0.0.1-2003-12-19-11:15:11 import
Igor Sysoev <igor@sysoev.ru>
parents: 207
diff changeset
229
679f60139863 nginx-0.0.1-2003-12-19-11:15:11 import
Igor Sysoev <igor@sysoev.ru>
parents: 207
diff changeset
230 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
231 temp->parent = subst;
679f60139863 nginx-0.0.1-2003-12-19-11:15:11 import
Igor Sysoev <igor@sysoev.ru>
parents: 207
diff changeset
232
679f60139863 nginx-0.0.1-2003-12-19-11:15:11 import
Igor Sysoev <igor@sysoev.ru>
parents: 207
diff changeset
233 } else {
679f60139863 nginx-0.0.1-2003-12-19-11:15:11 import
Igor Sysoev <igor@sysoev.ru>
parents: 207
diff changeset
234 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
235 }
679f60139863 nginx-0.0.1-2003-12-19-11:15:11 import
Igor Sysoev <igor@sysoev.ru>
parents: 207
diff changeset
236
679f60139863 nginx-0.0.1-2003-12-19-11:15:11 import
Igor Sysoev <igor@sysoev.ru>
parents: 207
diff changeset
237 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
238 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
239 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
240 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
241
679f60139863 nginx-0.0.1-2003-12-19-11:15:11 import
Igor Sysoev <igor@sysoev.ru>
parents: 207
diff changeset
242 if (node == *root) {
679f60139863 nginx-0.0.1-2003-12-19-11:15:11 import
Igor Sysoev <igor@sysoev.ru>
parents: 207
diff changeset
243 *root = subst;
679f60139863 nginx-0.0.1-2003-12-19-11:15:11 import
Igor Sysoev <igor@sysoev.ru>
parents: 207
diff changeset
244
679f60139863 nginx-0.0.1-2003-12-19-11:15:11 import
Igor Sysoev <igor@sysoev.ru>
parents: 207
diff changeset
245 } else {
679f60139863 nginx-0.0.1-2003-12-19-11:15:11 import
Igor Sysoev <igor@sysoev.ru>
parents: 207
diff changeset
246 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
247 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
248 } else {
679f60139863 nginx-0.0.1-2003-12-19-11:15:11 import
Igor Sysoev <igor@sysoev.ru>
parents: 207
diff changeset
249 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
250 }
679f60139863 nginx-0.0.1-2003-12-19-11:15:11 import
Igor Sysoev <igor@sysoev.ru>
parents: 207
diff changeset
251 }
679f60139863 nginx-0.0.1-2003-12-19-11:15:11 import
Igor Sysoev <igor@sysoev.ru>
parents: 207
diff changeset
252
679f60139863 nginx-0.0.1-2003-12-19-11:15:11 import
Igor Sysoev <igor@sysoev.ru>
parents: 207
diff changeset
253 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
254 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
255 }
679f60139863 nginx-0.0.1-2003-12-19-11:15:11 import
Igor Sysoev <igor@sysoev.ru>
parents: 207
diff changeset
256
679f60139863 nginx-0.0.1-2003-12-19-11:15:11 import
Igor Sysoev <igor@sysoev.ru>
parents: 207
diff changeset
257 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
258 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
259 }
229
ce6b72fe33fe nginx-0.0.1-2004-01-15-20:51:49 import
Igor Sysoev <igor@sysoev.ru>
parents: 213
diff changeset
260
ce6b72fe33fe nginx-0.0.1-2004-01-15-20:51:49 import
Igor Sysoev <igor@sysoev.ru>
parents: 213
diff changeset
261 /* DEBUG stuff */
ce6b72fe33fe nginx-0.0.1-2004-01-15-20:51:49 import
Igor Sysoev <igor@sysoev.ru>
parents: 213
diff changeset
262 node->left = NULL;
ce6b72fe33fe nginx-0.0.1-2004-01-15-20:51:49 import
Igor Sysoev <igor@sysoev.ru>
parents: 213
diff changeset
263 node->right = NULL;
ce6b72fe33fe nginx-0.0.1-2004-01-15-20:51:49 import
Igor Sysoev <igor@sysoev.ru>
parents: 213
diff changeset
264 node->parent = NULL;
ce6b72fe33fe nginx-0.0.1-2004-01-15-20:51:49 import
Igor Sysoev <igor@sysoev.ru>
parents: 213
diff changeset
265 node->key = 0;
205
4a9a2b1dd6fa nginx-0.0.1-2003-12-04-17:53:00 import
Igor Sysoev <igor@sysoev.ru>
parents:
diff changeset
266 }
4a9a2b1dd6fa nginx-0.0.1-2003-12-04-17:53:00 import
Igor Sysoev <igor@sysoev.ru>
parents:
diff changeset
267
852
629b5e4f8931 change variable name
Igor Sysoev <igor@sysoev.ru>
parents: 826
diff changeset
268 if (red) {
205
4a9a2b1dd6fa nginx-0.0.1-2003-12-04-17:53:00 import
Igor Sysoev <igor@sysoev.ru>
parents:
diff changeset
269 return;
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
4a9a2b1dd6fa nginx-0.0.1-2003-12-04-17:53:00 import
Igor Sysoev <igor@sysoev.ru>
parents:
diff changeset
272 /* a delete fixup */
4a9a2b1dd6fa nginx-0.0.1-2003-12-04-17:53:00 import
Igor Sysoev <igor@sysoev.ru>
parents:
diff changeset
273
212
679f60139863 nginx-0.0.1-2003-12-19-11:15:11 import
Igor Sysoev <igor@sysoev.ru>
parents: 207
diff changeset
274 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
275
205
4a9a2b1dd6fa nginx-0.0.1-2003-12-04-17:53:00 import
Igor Sysoev <igor@sysoev.ru>
parents:
diff changeset
276 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
277 w = temp->parent->right;
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 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
280 ngx_rbt_black(w);
4a9a2b1dd6fa nginx-0.0.1-2003-12-04-17:53:00 import
Igor Sysoev <igor@sysoev.ru>
parents:
diff changeset
281 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
282 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
283 w = temp->parent->right;
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 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
287 ngx_rbt_red(w);
4a9a2b1dd6fa nginx-0.0.1-2003-12-04-17:53:00 import
Igor Sysoev <igor@sysoev.ru>
parents:
diff changeset
288 temp = temp->parent;
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 } else {
4a9a2b1dd6fa nginx-0.0.1-2003-12-04-17:53:00 import
Igor Sysoev <igor@sysoev.ru>
parents:
diff changeset
291 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
292 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
293 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
294 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
295 w = temp->parent->right;
4a9a2b1dd6fa nginx-0.0.1-2003-12-04-17:53:00 import
Igor Sysoev <igor@sysoev.ru>
parents:
diff changeset
296 }
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 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
299 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
300 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
301 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
302 temp = *root;
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 } else {
4a9a2b1dd6fa nginx-0.0.1-2003-12-04-17:53:00 import
Igor Sysoev <igor@sysoev.ru>
parents:
diff changeset
306 w = temp->parent->left;
4a9a2b1dd6fa nginx-0.0.1-2003-12-04-17:53:00 import
Igor Sysoev <igor@sysoev.ru>
parents:
diff changeset
307
4a9a2b1dd6fa nginx-0.0.1-2003-12-04-17:53:00 import
Igor Sysoev <igor@sysoev.ru>
parents:
diff changeset
308 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
309 ngx_rbt_black(w);
4a9a2b1dd6fa nginx-0.0.1-2003-12-04-17:53:00 import
Igor Sysoev <igor@sysoev.ru>
parents:
diff changeset
310 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
311 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
312 w = temp->parent->left;
4a9a2b1dd6fa nginx-0.0.1-2003-12-04-17:53:00 import
Igor Sysoev <igor@sysoev.ru>
parents:
diff changeset
313 }
4a9a2b1dd6fa nginx-0.0.1-2003-12-04-17:53:00 import
Igor Sysoev <igor@sysoev.ru>
parents:
diff changeset
314
213
f536f91e8e99 nginx-0.0.1-2003-12-19-15:45:27 import
Igor Sysoev <igor@sysoev.ru>
parents: 212
diff changeset
315 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
316 ngx_rbt_red(w);
4a9a2b1dd6fa nginx-0.0.1-2003-12-04-17:53:00 import
Igor Sysoev <igor@sysoev.ru>
parents:
diff changeset
317 temp = temp->parent;
4a9a2b1dd6fa nginx-0.0.1-2003-12-04-17:53:00 import
Igor Sysoev <igor@sysoev.ru>
parents:
diff changeset
318
4a9a2b1dd6fa nginx-0.0.1-2003-12-04-17:53:00 import
Igor Sysoev <igor@sysoev.ru>
parents:
diff changeset
319 } else {
4a9a2b1dd6fa nginx-0.0.1-2003-12-04-17:53:00 import
Igor Sysoev <igor@sysoev.ru>
parents:
diff changeset
320 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
321 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
322 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
323 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
324 w = temp->parent->left;
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
4a9a2b1dd6fa nginx-0.0.1-2003-12-04-17:53:00 import
Igor Sysoev <igor@sysoev.ru>
parents:
diff changeset
327 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
328 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
329 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
330 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
331 temp = *root;
4a9a2b1dd6fa nginx-0.0.1-2003-12-04-17:53:00 import
Igor Sysoev <igor@sysoev.ru>
parents:
diff changeset
332 }
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
4a9a2b1dd6fa nginx-0.0.1-2003-12-04-17:53:00 import
Igor Sysoev <igor@sysoev.ru>
parents:
diff changeset
336 ngx_rbt_black(temp);
4a9a2b1dd6fa nginx-0.0.1-2003-12-04-17:53:00 import
Igor Sysoev <igor@sysoev.ru>
parents:
diff changeset
337 }
4a9a2b1dd6fa nginx-0.0.1-2003-12-04-17:53:00 import
Igor Sysoev <igor@sysoev.ru>
parents:
diff changeset
338
4a9a2b1dd6fa nginx-0.0.1-2003-12-04-17:53:00 import
Igor Sysoev <igor@sysoev.ru>
parents:
diff changeset
339
493
975f62e77f02 nginx-0.1.21-RELEASE import
Igor Sysoev <igor@sysoev.ru>
parents: 467
diff changeset
340 static ngx_inline void
559
c1f965ef9718 nginx-0.3.1-RELEASE import
Igor Sysoev <igor@sysoev.ru>
parents: 557
diff changeset
341 ngx_rbtree_left_rotate(ngx_rbtree_node_t **root, ngx_rbtree_node_t *sentinel,
c1f965ef9718 nginx-0.3.1-RELEASE import
Igor Sysoev <igor@sysoev.ru>
parents: 557
diff changeset
342 ngx_rbtree_node_t *node)
205
4a9a2b1dd6fa nginx-0.0.1-2003-12-04-17:53:00 import
Igor Sysoev <igor@sysoev.ru>
parents:
diff changeset
343 {
559
c1f965ef9718 nginx-0.3.1-RELEASE import
Igor Sysoev <igor@sysoev.ru>
parents: 557
diff changeset
344 ngx_rbtree_node_t *temp;
205
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 temp = node->right;
4a9a2b1dd6fa nginx-0.0.1-2003-12-04-17:53:00 import
Igor Sysoev <igor@sysoev.ru>
parents:
diff changeset
347 node->right = temp->left;
4a9a2b1dd6fa nginx-0.0.1-2003-12-04-17:53:00 import
Igor Sysoev <igor@sysoev.ru>
parents:
diff changeset
348
207
6e0fef527732 nginx-0.0.1-2003-12-05-20:07:27 import
Igor Sysoev <igor@sysoev.ru>
parents: 206
diff changeset
349 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
350 temp->left->parent = node;
4a9a2b1dd6fa nginx-0.0.1-2003-12-04-17:53:00 import
Igor Sysoev <igor@sysoev.ru>
parents:
diff changeset
351 }
4a9a2b1dd6fa nginx-0.0.1-2003-12-04-17:53:00 import
Igor Sysoev <igor@sysoev.ru>
parents:
diff changeset
352
4a9a2b1dd6fa nginx-0.0.1-2003-12-04-17:53:00 import
Igor Sysoev <igor@sysoev.ru>
parents:
diff changeset
353 temp->parent = node->parent;
4a9a2b1dd6fa nginx-0.0.1-2003-12-04-17:53:00 import
Igor Sysoev <igor@sysoev.ru>
parents:
diff changeset
354
212
679f60139863 nginx-0.0.1-2003-12-19-11:15:11 import
Igor Sysoev <igor@sysoev.ru>
parents: 207
diff changeset
355 if (node == *root) {
205
4a9a2b1dd6fa nginx-0.0.1-2003-12-04-17:53:00 import
Igor Sysoev <igor@sysoev.ru>
parents:
diff changeset
356 *root = temp;
4a9a2b1dd6fa nginx-0.0.1-2003-12-04-17:53:00 import
Igor Sysoev <igor@sysoev.ru>
parents:
diff changeset
357
4a9a2b1dd6fa nginx-0.0.1-2003-12-04-17:53:00 import
Igor Sysoev <igor@sysoev.ru>
parents:
diff changeset
358 } 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
359 node->parent->left = temp;
4a9a2b1dd6fa nginx-0.0.1-2003-12-04-17:53:00 import
Igor Sysoev <igor@sysoev.ru>
parents:
diff changeset
360
4a9a2b1dd6fa nginx-0.0.1-2003-12-04-17:53:00 import
Igor Sysoev <igor@sysoev.ru>
parents:
diff changeset
361 } else {
4a9a2b1dd6fa nginx-0.0.1-2003-12-04-17:53:00 import
Igor Sysoev <igor@sysoev.ru>
parents:
diff changeset
362 node->parent->right = temp;
4a9a2b1dd6fa nginx-0.0.1-2003-12-04-17:53:00 import
Igor Sysoev <igor@sysoev.ru>
parents:
diff changeset
363 }
4a9a2b1dd6fa nginx-0.0.1-2003-12-04-17:53:00 import
Igor Sysoev <igor@sysoev.ru>
parents:
diff changeset
364
4a9a2b1dd6fa nginx-0.0.1-2003-12-04-17:53:00 import
Igor Sysoev <igor@sysoev.ru>
parents:
diff changeset
365 temp->left = node;
4a9a2b1dd6fa nginx-0.0.1-2003-12-04-17:53:00 import
Igor Sysoev <igor@sysoev.ru>
parents:
diff changeset
366 node->parent = temp;
4a9a2b1dd6fa nginx-0.0.1-2003-12-04-17:53:00 import
Igor Sysoev <igor@sysoev.ru>
parents:
diff changeset
367 }
4a9a2b1dd6fa nginx-0.0.1-2003-12-04-17:53:00 import
Igor Sysoev <igor@sysoev.ru>
parents:
diff changeset
368
4a9a2b1dd6fa nginx-0.0.1-2003-12-04-17:53:00 import
Igor Sysoev <igor@sysoev.ru>
parents:
diff changeset
369
493
975f62e77f02 nginx-0.1.21-RELEASE import
Igor Sysoev <igor@sysoev.ru>
parents: 467
diff changeset
370 static ngx_inline void
559
c1f965ef9718 nginx-0.3.1-RELEASE import
Igor Sysoev <igor@sysoev.ru>
parents: 557
diff changeset
371 ngx_rbtree_right_rotate(ngx_rbtree_node_t **root, ngx_rbtree_node_t *sentinel,
c1f965ef9718 nginx-0.3.1-RELEASE import
Igor Sysoev <igor@sysoev.ru>
parents: 557
diff changeset
372 ngx_rbtree_node_t *node)
205
4a9a2b1dd6fa nginx-0.0.1-2003-12-04-17:53:00 import
Igor Sysoev <igor@sysoev.ru>
parents:
diff changeset
373 {
559
c1f965ef9718 nginx-0.3.1-RELEASE import
Igor Sysoev <igor@sysoev.ru>
parents: 557
diff changeset
374 ngx_rbtree_node_t *temp;
205
4a9a2b1dd6fa nginx-0.0.1-2003-12-04-17:53:00 import
Igor Sysoev <igor@sysoev.ru>
parents:
diff changeset
375
4a9a2b1dd6fa nginx-0.0.1-2003-12-04-17:53:00 import
Igor Sysoev <igor@sysoev.ru>
parents:
diff changeset
376 temp = node->left;
4a9a2b1dd6fa nginx-0.0.1-2003-12-04-17:53:00 import
Igor Sysoev <igor@sysoev.ru>
parents:
diff changeset
377 node->left = temp->right;
4a9a2b1dd6fa nginx-0.0.1-2003-12-04-17:53:00 import
Igor Sysoev <igor@sysoev.ru>
parents:
diff changeset
378
207
6e0fef527732 nginx-0.0.1-2003-12-05-20:07:27 import
Igor Sysoev <igor@sysoev.ru>
parents: 206
diff changeset
379 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
380 temp->right->parent = node;
4a9a2b1dd6fa nginx-0.0.1-2003-12-04-17:53:00 import
Igor Sysoev <igor@sysoev.ru>
parents:
diff changeset
381 }
4a9a2b1dd6fa nginx-0.0.1-2003-12-04-17:53:00 import
Igor Sysoev <igor@sysoev.ru>
parents:
diff changeset
382
4a9a2b1dd6fa nginx-0.0.1-2003-12-04-17:53:00 import
Igor Sysoev <igor@sysoev.ru>
parents:
diff changeset
383 temp->parent = node->parent;
4a9a2b1dd6fa nginx-0.0.1-2003-12-04-17:53:00 import
Igor Sysoev <igor@sysoev.ru>
parents:
diff changeset
384
212
679f60139863 nginx-0.0.1-2003-12-19-11:15:11 import
Igor Sysoev <igor@sysoev.ru>
parents: 207
diff changeset
385 if (node == *root) {
205
4a9a2b1dd6fa nginx-0.0.1-2003-12-04-17:53:00 import
Igor Sysoev <igor@sysoev.ru>
parents:
diff changeset
386 *root = temp;
4a9a2b1dd6fa nginx-0.0.1-2003-12-04-17:53:00 import
Igor Sysoev <igor@sysoev.ru>
parents:
diff changeset
387
4a9a2b1dd6fa nginx-0.0.1-2003-12-04-17:53:00 import
Igor Sysoev <igor@sysoev.ru>
parents:
diff changeset
388 } 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
389 node->parent->right = temp;
4a9a2b1dd6fa nginx-0.0.1-2003-12-04-17:53:00 import
Igor Sysoev <igor@sysoev.ru>
parents:
diff changeset
390
4a9a2b1dd6fa nginx-0.0.1-2003-12-04-17:53:00 import
Igor Sysoev <igor@sysoev.ru>
parents:
diff changeset
391 } else {
4a9a2b1dd6fa nginx-0.0.1-2003-12-04-17:53:00 import
Igor Sysoev <igor@sysoev.ru>
parents:
diff changeset
392 node->parent->left = temp;
4a9a2b1dd6fa nginx-0.0.1-2003-12-04-17:53:00 import
Igor Sysoev <igor@sysoev.ru>
parents:
diff changeset
393 }
4a9a2b1dd6fa nginx-0.0.1-2003-12-04-17:53:00 import
Igor Sysoev <igor@sysoev.ru>
parents:
diff changeset
394
4a9a2b1dd6fa nginx-0.0.1-2003-12-04-17:53:00 import
Igor Sysoev <igor@sysoev.ru>
parents:
diff changeset
395 temp->right = node;
4a9a2b1dd6fa nginx-0.0.1-2003-12-04-17:53:00 import
Igor Sysoev <igor@sysoev.ru>
parents:
diff changeset
396 node->parent = temp;
4a9a2b1dd6fa nginx-0.0.1-2003-12-04-17:53:00 import
Igor Sysoev <igor@sysoev.ru>
parents:
diff changeset
397 }