Mercurial > hg > nginx

annotate src/core/ngx_radix_tree.c @ 441:da8c5707af39

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nginx-0.1.0-2004-09-28-12:34:51 import; set copyright and remove unused files
author Igor Sysoev <igor@sysoev.ru>
date Tue, 28 Sep 2004 08:34:51 +0000
parents af4c6b45a687
children 42d11f017717
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: 351
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: 351
diff changeset
2 /*
da8c5707af39 nginx-0.1.0-2004-09-28-12:34:51 import; set copyright and remove unused files
Igor Sysoev <igor@sysoev.ru>
parents: 351
diff changeset
3 * Copyright (C) 2002-2004 Igor Sysoev
da8c5707af39 nginx-0.1.0-2004-09-28-12:34:51 import; set copyright and remove unused files
Igor Sysoev <igor@sysoev.ru>
parents: 351
diff changeset
4 */
da8c5707af39 nginx-0.1.0-2004-09-28-12:34:51 import; set copyright and remove unused files
Igor Sysoev <igor@sysoev.ru>
parents: 351
diff changeset
5
340
0bf903191ceb nginx-0.0.3-2004-05-25-19:28:46 import
Igor Sysoev <igor@sysoev.ru>
parents:
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6
0bf903191ceb nginx-0.0.3-2004-05-25-19:28:46 import
Igor Sysoev <igor@sysoev.ru>
parents:
diff changeset
7 #include <ngx_config.h>
0bf903191ceb nginx-0.0.3-2004-05-25-19:28:46 import
Igor Sysoev <igor@sysoev.ru>
parents:
diff changeset
8 #include <ngx_core.h>
0bf903191ceb nginx-0.0.3-2004-05-25-19:28:46 import
Igor Sysoev <igor@sysoev.ru>
parents:
diff changeset
9
0bf903191ceb nginx-0.0.3-2004-05-25-19:28:46 import
Igor Sysoev <igor@sysoev.ru>
parents:
diff changeset
10
0bf903191ceb nginx-0.0.3-2004-05-25-19:28:46 import
Igor Sysoev <igor@sysoev.ru>
parents:
diff changeset
11 static void *ngx_radix_alloc(ngx_radix_tree_t *tree, size_t size);
0bf903191ceb nginx-0.0.3-2004-05-25-19:28:46 import
Igor Sysoev <igor@sysoev.ru>
parents:
diff changeset
12
0bf903191ceb nginx-0.0.3-2004-05-25-19:28:46 import
Igor Sysoev <igor@sysoev.ru>
parents:
diff changeset
13
0bf903191ceb nginx-0.0.3-2004-05-25-19:28:46 import
Igor Sysoev <igor@sysoev.ru>
parents:
diff changeset
14 ngx_radix_tree_t *ngx_radix_tree_create(ngx_pool_t *pool)
0bf903191ceb nginx-0.0.3-2004-05-25-19:28:46 import
Igor Sysoev <igor@sysoev.ru>
parents:
diff changeset
15 {
0bf903191ceb nginx-0.0.3-2004-05-25-19:28:46 import
Igor Sysoev <igor@sysoev.ru>
parents:
diff changeset
16 ngx_radix_tree_t *tree;
0bf903191ceb nginx-0.0.3-2004-05-25-19:28:46 import
Igor Sysoev <igor@sysoev.ru>
parents:
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17
0bf903191ceb nginx-0.0.3-2004-05-25-19:28:46 import
Igor Sysoev <igor@sysoev.ru>
parents:
diff changeset
18 if (!(tree = ngx_palloc(pool, sizeof(ngx_radix_tree_t)))) {
0bf903191ceb nginx-0.0.3-2004-05-25-19:28:46 import
Igor Sysoev <igor@sysoev.ru>
parents:
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19 return NULL;
0bf903191ceb nginx-0.0.3-2004-05-25-19:28:46 import
Igor Sysoev <igor@sysoev.ru>
parents:
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20 }
0bf903191ceb nginx-0.0.3-2004-05-25-19:28:46 import
Igor Sysoev <igor@sysoev.ru>
parents:
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21
0bf903191ceb nginx-0.0.3-2004-05-25-19:28:46 import
Igor Sysoev <igor@sysoev.ru>
parents:
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22 tree->pool = pool;
0bf903191ceb nginx-0.0.3-2004-05-25-19:28:46 import
Igor Sysoev <igor@sysoev.ru>
parents:
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23 tree->free = NULL;
341
41e552841296 nginx-0.0.3-2004-05-26-19:30:12 import
Igor Sysoev <igor@sysoev.ru>
parents: 340
diff changeset
24 tree->start = NULL;
340
0bf903191ceb nginx-0.0.3-2004-05-25-19:28:46 import
Igor Sysoev <igor@sysoev.ru>
parents:
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25 tree->size = 0;
0bf903191ceb nginx-0.0.3-2004-05-25-19:28:46 import
Igor Sysoev <igor@sysoev.ru>
parents:
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26
342
0ee0642af5f1 nginx-0.0.3-2004-05-26-23:33:53 import
Igor Sysoev <igor@sysoev.ru>
parents: 341
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27 if (!(tree->root = ngx_radix_alloc(tree, sizeof(ngx_radix_node_t)))) {
0ee0642af5f1 nginx-0.0.3-2004-05-26-23:33:53 import
Igor Sysoev <igor@sysoev.ru>
parents: 341
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28 return NULL;
0ee0642af5f1 nginx-0.0.3-2004-05-26-23:33:53 import
Igor Sysoev <igor@sysoev.ru>
parents: 341
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29 }
0ee0642af5f1 nginx-0.0.3-2004-05-26-23:33:53 import
Igor Sysoev <igor@sysoev.ru>
parents: 341
diff changeset
30
0ee0642af5f1 nginx-0.0.3-2004-05-26-23:33:53 import
Igor Sysoev <igor@sysoev.ru>
parents: 341
diff changeset
31 tree->root->value = (uintptr_t) 0;
0ee0642af5f1 nginx-0.0.3-2004-05-26-23:33:53 import
Igor Sysoev <igor@sysoev.ru>
parents: 341
diff changeset
32 tree->root->right = NULL;
0ee0642af5f1 nginx-0.0.3-2004-05-26-23:33:53 import
Igor Sysoev <igor@sysoev.ru>
parents: 341
diff changeset
33 tree->root->left = NULL;
0ee0642af5f1 nginx-0.0.3-2004-05-26-23:33:53 import
Igor Sysoev <igor@sysoev.ru>
parents: 341
diff changeset
34 tree->root->parent = NULL;
0ee0642af5f1 nginx-0.0.3-2004-05-26-23:33:53 import
Igor Sysoev <igor@sysoev.ru>
parents: 341
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35
340
0bf903191ceb nginx-0.0.3-2004-05-25-19:28:46 import
Igor Sysoev <igor@sysoev.ru>
parents:
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36 return tree;
0bf903191ceb nginx-0.0.3-2004-05-25-19:28:46 import
Igor Sysoev <igor@sysoev.ru>
parents:
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37 }
0bf903191ceb nginx-0.0.3-2004-05-25-19:28:46 import
Igor Sysoev <igor@sysoev.ru>
parents:
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38
0bf903191ceb nginx-0.0.3-2004-05-25-19:28:46 import
Igor Sysoev <igor@sysoev.ru>
parents:
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39
0bf903191ceb nginx-0.0.3-2004-05-25-19:28:46 import
Igor Sysoev <igor@sysoev.ru>
parents:
diff changeset
40 ngx_int_t ngx_radix32tree_insert(ngx_radix_tree_t *tree,
0bf903191ceb nginx-0.0.3-2004-05-25-19:28:46 import
Igor Sysoev <igor@sysoev.ru>
parents:
diff changeset
41 uint32_t key, uint32_t mask, uintptr_t value)
0bf903191ceb nginx-0.0.3-2004-05-25-19:28:46 import
Igor Sysoev <igor@sysoev.ru>
parents:
diff changeset
42 {
0bf903191ceb nginx-0.0.3-2004-05-25-19:28:46 import
Igor Sysoev <igor@sysoev.ru>
parents:
diff changeset
43 uint32_t bit;
342
0ee0642af5f1 nginx-0.0.3-2004-05-26-23:33:53 import
Igor Sysoev <igor@sysoev.ru>
parents: 341
diff changeset
44 ngx_radix_node_t *node, *next;
0ee0642af5f1 nginx-0.0.3-2004-05-26-23:33:53 import
Igor Sysoev <igor@sysoev.ru>
parents: 341
diff changeset
45
0ee0642af5f1 nginx-0.0.3-2004-05-26-23:33:53 import
Igor Sysoev <igor@sysoev.ru>
parents: 341
diff changeset
46 bit = 0x80000000;
0ee0642af5f1 nginx-0.0.3-2004-05-26-23:33:53 import
Igor Sysoev <igor@sysoev.ru>
parents: 341
diff changeset
47 node = tree->root;
0ee0642af5f1 nginx-0.0.3-2004-05-26-23:33:53 import
Igor Sysoev <igor@sysoev.ru>
parents: 341
diff changeset
48 next = NULL;
0ee0642af5f1 nginx-0.0.3-2004-05-26-23:33:53 import
Igor Sysoev <igor@sysoev.ru>
parents: 341
diff changeset
49
0ee0642af5f1 nginx-0.0.3-2004-05-26-23:33:53 import
Igor Sysoev <igor@sysoev.ru>
parents: 341
diff changeset
50 while (bit & mask) {
0ee0642af5f1 nginx-0.0.3-2004-05-26-23:33:53 import
Igor Sysoev <igor@sysoev.ru>
parents: 341
diff changeset
51 if (key & bit) {
0ee0642af5f1 nginx-0.0.3-2004-05-26-23:33:53 import
Igor Sysoev <igor@sysoev.ru>
parents: 341
diff changeset
52 next = node->right;
0ee0642af5f1 nginx-0.0.3-2004-05-26-23:33:53 import
Igor Sysoev <igor@sysoev.ru>
parents: 341
diff changeset
53
0ee0642af5f1 nginx-0.0.3-2004-05-26-23:33:53 import
Igor Sysoev <igor@sysoev.ru>
parents: 341
diff changeset
54 } else {
0ee0642af5f1 nginx-0.0.3-2004-05-26-23:33:53 import
Igor Sysoev <igor@sysoev.ru>
parents: 341
diff changeset
55 next = node->left;
0ee0642af5f1 nginx-0.0.3-2004-05-26-23:33:53 import
Igor Sysoev <igor@sysoev.ru>
parents: 341
diff changeset
56 }
0ee0642af5f1 nginx-0.0.3-2004-05-26-23:33:53 import
Igor Sysoev <igor@sysoev.ru>
parents: 341
diff changeset
57
0ee0642af5f1 nginx-0.0.3-2004-05-26-23:33:53 import
Igor Sysoev <igor@sysoev.ru>
parents: 341
diff changeset
58 bit >>= 1;
0ee0642af5f1 nginx-0.0.3-2004-05-26-23:33:53 import
Igor Sysoev <igor@sysoev.ru>
parents: 341
diff changeset
59
0ee0642af5f1 nginx-0.0.3-2004-05-26-23:33:53 import
Igor Sysoev <igor@sysoev.ru>
parents: 341
diff changeset
60 if (next == NULL) {
0ee0642af5f1 nginx-0.0.3-2004-05-26-23:33:53 import
Igor Sysoev <igor@sysoev.ru>
parents: 341
diff changeset
61 break;
0ee0642af5f1 nginx-0.0.3-2004-05-26-23:33:53 import
Igor Sysoev <igor@sysoev.ru>
parents: 341
diff changeset
62 }
0ee0642af5f1 nginx-0.0.3-2004-05-26-23:33:53 import
Igor Sysoev <igor@sysoev.ru>
parents: 341
diff changeset
63
0ee0642af5f1 nginx-0.0.3-2004-05-26-23:33:53 import
Igor Sysoev <igor@sysoev.ru>
parents: 341
diff changeset
64 node = next;
0ee0642af5f1 nginx-0.0.3-2004-05-26-23:33:53 import
Igor Sysoev <igor@sysoev.ru>
parents: 341
diff changeset
65 }
0ee0642af5f1 nginx-0.0.3-2004-05-26-23:33:53 import
Igor Sysoev <igor@sysoev.ru>
parents: 341
diff changeset
66
0ee0642af5f1 nginx-0.0.3-2004-05-26-23:33:53 import
Igor Sysoev <igor@sysoev.ru>
parents: 341
diff changeset
67 if (next) {
0ee0642af5f1 nginx-0.0.3-2004-05-26-23:33:53 import
Igor Sysoev <igor@sysoev.ru>
parents: 341
diff changeset
68 if (node->value) {
0ee0642af5f1 nginx-0.0.3-2004-05-26-23:33:53 import
Igor Sysoev <igor@sysoev.ru>
parents: 341
diff changeset
69 return NGX_BUSY;
0ee0642af5f1 nginx-0.0.3-2004-05-26-23:33:53 import
Igor Sysoev <igor@sysoev.ru>
parents: 341
diff changeset
70 }
0ee0642af5f1 nginx-0.0.3-2004-05-26-23:33:53 import
Igor Sysoev <igor@sysoev.ru>
parents: 341
diff changeset
71
0ee0642af5f1 nginx-0.0.3-2004-05-26-23:33:53 import
Igor Sysoev <igor@sysoev.ru>
parents: 341
diff changeset
72 node->value = value;
0ee0642af5f1 nginx-0.0.3-2004-05-26-23:33:53 import
Igor Sysoev <igor@sysoev.ru>
parents: 341
diff changeset
73 return NGX_OK;
0ee0642af5f1 nginx-0.0.3-2004-05-26-23:33:53 import
Igor Sysoev <igor@sysoev.ru>
parents: 341
diff changeset
74 }
0ee0642af5f1 nginx-0.0.3-2004-05-26-23:33:53 import
Igor Sysoev <igor@sysoev.ru>
parents: 341
diff changeset
75
0ee0642af5f1 nginx-0.0.3-2004-05-26-23:33:53 import
Igor Sysoev <igor@sysoev.ru>
parents: 341
diff changeset
76 while (bit & mask) {
0ee0642af5f1 nginx-0.0.3-2004-05-26-23:33:53 import
Igor Sysoev <igor@sysoev.ru>
parents: 341
diff changeset
77 if (!(next = ngx_radix_alloc(tree, sizeof(ngx_radix_node_t)))) {
0ee0642af5f1 nginx-0.0.3-2004-05-26-23:33:53 import
Igor Sysoev <igor@sysoev.ru>
parents: 341
diff changeset
78 return NGX_ERROR;
0ee0642af5f1 nginx-0.0.3-2004-05-26-23:33:53 import
Igor Sysoev <igor@sysoev.ru>
parents: 341
diff changeset
79 }
0ee0642af5f1 nginx-0.0.3-2004-05-26-23:33:53 import
Igor Sysoev <igor@sysoev.ru>
parents: 341
diff changeset
80
0ee0642af5f1 nginx-0.0.3-2004-05-26-23:33:53 import
Igor Sysoev <igor@sysoev.ru>
parents: 341
diff changeset
81 next->value = value;
0ee0642af5f1 nginx-0.0.3-2004-05-26-23:33:53 import
Igor Sysoev <igor@sysoev.ru>
parents: 341
diff changeset
82 next->right = NULL;
0ee0642af5f1 nginx-0.0.3-2004-05-26-23:33:53 import
Igor Sysoev <igor@sysoev.ru>
parents: 341
diff changeset
83 next->left = NULL;
0ee0642af5f1 nginx-0.0.3-2004-05-26-23:33:53 import
Igor Sysoev <igor@sysoev.ru>
parents: 341
diff changeset
84 next->parent = node;
0ee0642af5f1 nginx-0.0.3-2004-05-26-23:33:53 import
Igor Sysoev <igor@sysoev.ru>
parents: 341
diff changeset
85
0ee0642af5f1 nginx-0.0.3-2004-05-26-23:33:53 import
Igor Sysoev <igor@sysoev.ru>
parents: 341
diff changeset
86 if (key & bit) {
0ee0642af5f1 nginx-0.0.3-2004-05-26-23:33:53 import
Igor Sysoev <igor@sysoev.ru>
parents: 341
diff changeset
87 node->right = next;
0ee0642af5f1 nginx-0.0.3-2004-05-26-23:33:53 import
Igor Sysoev <igor@sysoev.ru>
parents: 341
diff changeset
88
0ee0642af5f1 nginx-0.0.3-2004-05-26-23:33:53 import
Igor Sysoev <igor@sysoev.ru>
parents: 341
diff changeset
89 } else {
0ee0642af5f1 nginx-0.0.3-2004-05-26-23:33:53 import
Igor Sysoev <igor@sysoev.ru>
parents: 341
diff changeset
90 node->left = next;
0ee0642af5f1 nginx-0.0.3-2004-05-26-23:33:53 import
Igor Sysoev <igor@sysoev.ru>
parents: 341
diff changeset
91 }
0ee0642af5f1 nginx-0.0.3-2004-05-26-23:33:53 import
Igor Sysoev <igor@sysoev.ru>
parents: 341
diff changeset
92
0ee0642af5f1 nginx-0.0.3-2004-05-26-23:33:53 import
Igor Sysoev <igor@sysoev.ru>
parents: 341
diff changeset
93 bit >>= 1;
0ee0642af5f1 nginx-0.0.3-2004-05-26-23:33:53 import
Igor Sysoev <igor@sysoev.ru>
parents: 341
diff changeset
94 node = next;
0ee0642af5f1 nginx-0.0.3-2004-05-26-23:33:53 import
Igor Sysoev <igor@sysoev.ru>
parents: 341
diff changeset
95 }
0ee0642af5f1 nginx-0.0.3-2004-05-26-23:33:53 import
Igor Sysoev <igor@sysoev.ru>
parents: 341
diff changeset
96
0ee0642af5f1 nginx-0.0.3-2004-05-26-23:33:53 import
Igor Sysoev <igor@sysoev.ru>
parents: 341
diff changeset
97 return NGX_OK;
0ee0642af5f1 nginx-0.0.3-2004-05-26-23:33:53 import
Igor Sysoev <igor@sysoev.ru>
parents: 341
diff changeset
98 }
0ee0642af5f1 nginx-0.0.3-2004-05-26-23:33:53 import
Igor Sysoev <igor@sysoev.ru>
parents: 341
diff changeset
99
0ee0642af5f1 nginx-0.0.3-2004-05-26-23:33:53 import
Igor Sysoev <igor@sysoev.ru>
parents: 341
diff changeset
100
0ee0642af5f1 nginx-0.0.3-2004-05-26-23:33:53 import
Igor Sysoev <igor@sysoev.ru>
parents: 341
diff changeset
101 ngx_int_t ngx_radix32tree_delete(ngx_radix_tree_t *tree,
0ee0642af5f1 nginx-0.0.3-2004-05-26-23:33:53 import
Igor Sysoev <igor@sysoev.ru>
parents: 341
diff changeset
102 uint32_t key, uint32_t mask)
0ee0642af5f1 nginx-0.0.3-2004-05-26-23:33:53 import
Igor Sysoev <igor@sysoev.ru>
parents: 341
diff changeset
103 {
0ee0642af5f1 nginx-0.0.3-2004-05-26-23:33:53 import
Igor Sysoev <igor@sysoev.ru>
parents: 341
diff changeset
104 uint32_t bit;
0ee0642af5f1 nginx-0.0.3-2004-05-26-23:33:53 import
Igor Sysoev <igor@sysoev.ru>
parents: 341
diff changeset
105 ngx_radix_node_t *node;
340
0bf903191ceb nginx-0.0.3-2004-05-25-19:28:46 import
Igor Sysoev <igor@sysoev.ru>
parents:
diff changeset
106
0bf903191ceb nginx-0.0.3-2004-05-25-19:28:46 import
Igor Sysoev <igor@sysoev.ru>
parents:
diff changeset
107 bit = 0x80000000;
0bf903191ceb nginx-0.0.3-2004-05-25-19:28:46 import
Igor Sysoev <igor@sysoev.ru>
parents:
diff changeset
108 node = tree->root;
0bf903191ceb nginx-0.0.3-2004-05-25-19:28:46 import
Igor Sysoev <igor@sysoev.ru>
parents:
diff changeset
109
0bf903191ceb nginx-0.0.3-2004-05-25-19:28:46 import
Igor Sysoev <igor@sysoev.ru>
parents:
diff changeset
110 while (node && (bit & mask)) {
0bf903191ceb nginx-0.0.3-2004-05-25-19:28:46 import
Igor Sysoev <igor@sysoev.ru>
parents:
diff changeset
111 if (key & bit) {
0bf903191ceb nginx-0.0.3-2004-05-25-19:28:46 import
Igor Sysoev <igor@sysoev.ru>
parents:
diff changeset
112 node = node->right;
0bf903191ceb nginx-0.0.3-2004-05-25-19:28:46 import
Igor Sysoev <igor@sysoev.ru>
parents:
diff changeset
113
0bf903191ceb nginx-0.0.3-2004-05-25-19:28:46 import
Igor Sysoev <igor@sysoev.ru>
parents:
diff changeset
114 } else {
0bf903191ceb nginx-0.0.3-2004-05-25-19:28:46 import
Igor Sysoev <igor@sysoev.ru>
parents:
diff changeset
115 node = node->left;
0bf903191ceb nginx-0.0.3-2004-05-25-19:28:46 import
Igor Sysoev <igor@sysoev.ru>
parents:
diff changeset
116 }
0bf903191ceb nginx-0.0.3-2004-05-25-19:28:46 import
Igor Sysoev <igor@sysoev.ru>
parents:
diff changeset
117
0bf903191ceb nginx-0.0.3-2004-05-25-19:28:46 import
Igor Sysoev <igor@sysoev.ru>
parents:
diff changeset
118 bit >>= 1;
0bf903191ceb nginx-0.0.3-2004-05-25-19:28:46 import
Igor Sysoev <igor@sysoev.ru>
parents:
diff changeset
119 }
0bf903191ceb nginx-0.0.3-2004-05-25-19:28:46 import
Igor Sysoev <igor@sysoev.ru>
parents:
diff changeset
120
342
0ee0642af5f1 nginx-0.0.3-2004-05-26-23:33:53 import
Igor Sysoev <igor@sysoev.ru>
parents: 341
diff changeset
121 if (node == NULL) {
0ee0642af5f1 nginx-0.0.3-2004-05-26-23:33:53 import
Igor Sysoev <igor@sysoev.ru>
parents: 341
diff changeset
122 return NGX_ERROR;
0ee0642af5f1 nginx-0.0.3-2004-05-26-23:33:53 import
Igor Sysoev <igor@sysoev.ru>
parents: 341
diff changeset
123 }
340
0bf903191ceb nginx-0.0.3-2004-05-25-19:28:46 import
Igor Sysoev <igor@sysoev.ru>
parents:
diff changeset
124
342
0ee0642af5f1 nginx-0.0.3-2004-05-26-23:33:53 import
Igor Sysoev <igor@sysoev.ru>
parents: 341
diff changeset
125 if (node->right || node->left) {
0ee0642af5f1 nginx-0.0.3-2004-05-26-23:33:53 import
Igor Sysoev <igor@sysoev.ru>
parents: 341
diff changeset
126 node->value = (uintptr_t) 0;
340
0bf903191ceb nginx-0.0.3-2004-05-25-19:28:46 import
Igor Sysoev <igor@sysoev.ru>
parents:
diff changeset
127 return NGX_OK;
0bf903191ceb nginx-0.0.3-2004-05-25-19:28:46 import
Igor Sysoev <igor@sysoev.ru>
parents:
diff changeset
128 }
0bf903191ceb nginx-0.0.3-2004-05-25-19:28:46 import
Igor Sysoev <igor@sysoev.ru>
parents:
diff changeset
129
342
0ee0642af5f1 nginx-0.0.3-2004-05-26-23:33:53 import
Igor Sysoev <igor@sysoev.ru>
parents: 341
diff changeset
130 for ( ;; ) {
0ee0642af5f1 nginx-0.0.3-2004-05-26-23:33:53 import
Igor Sysoev <igor@sysoev.ru>
parents: 341
diff changeset
131 if (node->parent->right == node) {
0ee0642af5f1 nginx-0.0.3-2004-05-26-23:33:53 import
Igor Sysoev <igor@sysoev.ru>
parents: 341
diff changeset
132 node->parent->right = NULL;
0ee0642af5f1 nginx-0.0.3-2004-05-26-23:33:53 import
Igor Sysoev <igor@sysoev.ru>
parents: 341
diff changeset
133 } else {
0ee0642af5f1 nginx-0.0.3-2004-05-26-23:33:53 import
Igor Sysoev <igor@sysoev.ru>
parents: 341
diff changeset
134 node->parent->left = NULL;
340
0bf903191ceb nginx-0.0.3-2004-05-25-19:28:46 import
Igor Sysoev <igor@sysoev.ru>
parents:
diff changeset
135 }
0bf903191ceb nginx-0.0.3-2004-05-25-19:28:46 import
Igor Sysoev <igor@sysoev.ru>
parents:
diff changeset
136
342
0ee0642af5f1 nginx-0.0.3-2004-05-26-23:33:53 import
Igor Sysoev <igor@sysoev.ru>
parents: 341
diff changeset
137 node->right = tree->free;
0ee0642af5f1 nginx-0.0.3-2004-05-26-23:33:53 import
Igor Sysoev <igor@sysoev.ru>
parents: 341
diff changeset
138 tree->free = node;
340
0bf903191ceb nginx-0.0.3-2004-05-25-19:28:46 import
Igor Sysoev <igor@sysoev.ru>
parents:
diff changeset
139
342
0ee0642af5f1 nginx-0.0.3-2004-05-26-23:33:53 import
Igor Sysoev <igor@sysoev.ru>
parents: 341
diff changeset
140 node = node->parent;
0ee0642af5f1 nginx-0.0.3-2004-05-26-23:33:53 import
Igor Sysoev <igor@sysoev.ru>
parents: 341
diff changeset
141
0ee0642af5f1 nginx-0.0.3-2004-05-26-23:33:53 import
Igor Sysoev <igor@sysoev.ru>
parents: 341
diff changeset
142 if (node->right || node->left || node->value || node->parent == NULL) {
0ee0642af5f1 nginx-0.0.3-2004-05-26-23:33:53 import
Igor Sysoev <igor@sysoev.ru>
parents: 341
diff changeset
143 break;
340
0bf903191ceb nginx-0.0.3-2004-05-25-19:28:46 import
Igor Sysoev <igor@sysoev.ru>
parents:
diff changeset
144 }
0bf903191ceb nginx-0.0.3-2004-05-25-19:28:46 import
Igor Sysoev <igor@sysoev.ru>
parents:
diff changeset
145 }
0bf903191ceb nginx-0.0.3-2004-05-25-19:28:46 import
Igor Sysoev <igor@sysoev.ru>
parents:
diff changeset
146
0bf903191ceb nginx-0.0.3-2004-05-25-19:28:46 import
Igor Sysoev <igor@sysoev.ru>
parents:
diff changeset
147 return NGX_OK;
0bf903191ceb nginx-0.0.3-2004-05-25-19:28:46 import
Igor Sysoev <igor@sysoev.ru>
parents:
diff changeset
148 }
0bf903191ceb nginx-0.0.3-2004-05-25-19:28:46 import
Igor Sysoev <igor@sysoev.ru>
parents:
diff changeset
149
0bf903191ceb nginx-0.0.3-2004-05-25-19:28:46 import
Igor Sysoev <igor@sysoev.ru>
parents:
diff changeset
150
0bf903191ceb nginx-0.0.3-2004-05-25-19:28:46 import
Igor Sysoev <igor@sysoev.ru>
parents:
diff changeset
151 uintptr_t ngx_radix32tree_find(ngx_radix_tree_t *tree, uint32_t key)
0bf903191ceb nginx-0.0.3-2004-05-25-19:28:46 import
Igor Sysoev <igor@sysoev.ru>
parents:
diff changeset
152 {
0bf903191ceb nginx-0.0.3-2004-05-25-19:28:46 import
Igor Sysoev <igor@sysoev.ru>
parents:
diff changeset
153 uint32_t bit;
0bf903191ceb nginx-0.0.3-2004-05-25-19:28:46 import
Igor Sysoev <igor@sysoev.ru>
parents:
diff changeset
154 uintptr_t value;
0bf903191ceb nginx-0.0.3-2004-05-25-19:28:46 import
Igor Sysoev <igor@sysoev.ru>
parents:
diff changeset
155 ngx_radix_node_t *node;
0bf903191ceb nginx-0.0.3-2004-05-25-19:28:46 import
Igor Sysoev <igor@sysoev.ru>
parents:
diff changeset
156
0bf903191ceb nginx-0.0.3-2004-05-25-19:28:46 import
Igor Sysoev <igor@sysoev.ru>
parents:
diff changeset
157 bit = 0x80000000;
341
41e552841296 nginx-0.0.3-2004-05-26-19:30:12 import
Igor Sysoev <igor@sysoev.ru>
parents: 340
diff changeset
158 value = (uintptr_t) 0;
340
0bf903191ceb nginx-0.0.3-2004-05-25-19:28:46 import
Igor Sysoev <igor@sysoev.ru>
parents:
diff changeset
159 node = tree->root;
0bf903191ceb nginx-0.0.3-2004-05-25-19:28:46 import
Igor Sysoev <igor@sysoev.ru>
parents:
diff changeset
160
0bf903191ceb nginx-0.0.3-2004-05-25-19:28:46 import
Igor Sysoev <igor@sysoev.ru>
parents:
diff changeset
161 while (node) {
0bf903191ceb nginx-0.0.3-2004-05-25-19:28:46 import
Igor Sysoev <igor@sysoev.ru>
parents:
diff changeset
162 if (node->value) {
0bf903191ceb nginx-0.0.3-2004-05-25-19:28:46 import
Igor Sysoev <igor@sysoev.ru>
parents:
diff changeset
163 value = node->value;
0bf903191ceb nginx-0.0.3-2004-05-25-19:28:46 import
Igor Sysoev <igor@sysoev.ru>
parents:
diff changeset
164 }
0bf903191ceb nginx-0.0.3-2004-05-25-19:28:46 import
Igor Sysoev <igor@sysoev.ru>
parents:
diff changeset
165
0bf903191ceb nginx-0.0.3-2004-05-25-19:28:46 import
Igor Sysoev <igor@sysoev.ru>
parents:
diff changeset
166 if (key & bit) {
0bf903191ceb nginx-0.0.3-2004-05-25-19:28:46 import
Igor Sysoev <igor@sysoev.ru>
parents:
diff changeset
167 node = node->right;
0bf903191ceb nginx-0.0.3-2004-05-25-19:28:46 import
Igor Sysoev <igor@sysoev.ru>
parents:
diff changeset
168
0bf903191ceb nginx-0.0.3-2004-05-25-19:28:46 import
Igor Sysoev <igor@sysoev.ru>
parents:
diff changeset
169 } else {
0bf903191ceb nginx-0.0.3-2004-05-25-19:28:46 import
Igor Sysoev <igor@sysoev.ru>
parents:
diff changeset
170 node = node->left;
0bf903191ceb nginx-0.0.3-2004-05-25-19:28:46 import
Igor Sysoev <igor@sysoev.ru>
parents:
diff changeset
171 }
0bf903191ceb nginx-0.0.3-2004-05-25-19:28:46 import
Igor Sysoev <igor@sysoev.ru>
parents:
diff changeset
172
0bf903191ceb nginx-0.0.3-2004-05-25-19:28:46 import
Igor Sysoev <igor@sysoev.ru>
parents:
diff changeset
173 bit >>= 1;
0bf903191ceb nginx-0.0.3-2004-05-25-19:28:46 import
Igor Sysoev <igor@sysoev.ru>
parents:
diff changeset
174 }
0bf903191ceb nginx-0.0.3-2004-05-25-19:28:46 import
Igor Sysoev <igor@sysoev.ru>
parents:
diff changeset
175
0bf903191ceb nginx-0.0.3-2004-05-25-19:28:46 import
Igor Sysoev <igor@sysoev.ru>
parents:
diff changeset
176 return value;
0bf903191ceb nginx-0.0.3-2004-05-25-19:28:46 import
Igor Sysoev <igor@sysoev.ru>
parents:
diff changeset
177 }
0bf903191ceb nginx-0.0.3-2004-05-25-19:28:46 import
Igor Sysoev <igor@sysoev.ru>
parents:
diff changeset
178
0bf903191ceb nginx-0.0.3-2004-05-25-19:28:46 import
Igor Sysoev <igor@sysoev.ru>
parents:
diff changeset
179
0bf903191ceb nginx-0.0.3-2004-05-25-19:28:46 import
Igor Sysoev <igor@sysoev.ru>
parents:
diff changeset
180 static void *ngx_radix_alloc(ngx_radix_tree_t *tree, size_t size)
0bf903191ceb nginx-0.0.3-2004-05-25-19:28:46 import
Igor Sysoev <igor@sysoev.ru>
parents:
diff changeset
181 {
0bf903191ceb nginx-0.0.3-2004-05-25-19:28:46 import
Igor Sysoev <igor@sysoev.ru>
parents:
diff changeset
182 char *p;
0bf903191ceb nginx-0.0.3-2004-05-25-19:28:46 import
Igor Sysoev <igor@sysoev.ru>
parents:
diff changeset
183
341
41e552841296 nginx-0.0.3-2004-05-26-19:30:12 import
Igor Sysoev <igor@sysoev.ru>
parents: 340
diff changeset
184 if (tree->free) {
41e552841296 nginx-0.0.3-2004-05-26-19:30:12 import
Igor Sysoev <igor@sysoev.ru>
parents: 340
diff changeset
185 p = (char *) tree->free;
41e552841296 nginx-0.0.3-2004-05-26-19:30:12 import
Igor Sysoev <igor@sysoev.ru>
parents: 340
diff changeset
186 tree->free = tree->free->right;
41e552841296 nginx-0.0.3-2004-05-26-19:30:12 import
Igor Sysoev <igor@sysoev.ru>
parents: 340
diff changeset
187 return p;
41e552841296 nginx-0.0.3-2004-05-26-19:30:12 import
Igor Sysoev <igor@sysoev.ru>
parents: 340
diff changeset
188 }
41e552841296 nginx-0.0.3-2004-05-26-19:30:12 import
Igor Sysoev <igor@sysoev.ru>
parents: 340
diff changeset
189
340
0bf903191ceb nginx-0.0.3-2004-05-25-19:28:46 import
Igor Sysoev <igor@sysoev.ru>
parents:
diff changeset
190 if (tree->size < size) {
351
af4c6b45a687 nginx-0.0.4-2004-06-10-22:36:57 import
Igor Sysoev <igor@sysoev.ru>
parents: 342
diff changeset
191 if (!(tree->start = ngx_palloc(tree->pool, ngx_pagesize))) {
340
0bf903191ceb nginx-0.0.3-2004-05-25-19:28:46 import
Igor Sysoev <igor@sysoev.ru>
parents:
diff changeset
192 return NULL;
0bf903191ceb nginx-0.0.3-2004-05-25-19:28:46 import
Igor Sysoev <igor@sysoev.ru>
parents:
diff changeset
193 }
0bf903191ceb nginx-0.0.3-2004-05-25-19:28:46 import
Igor Sysoev <igor@sysoev.ru>
parents:
diff changeset
194
351
af4c6b45a687 nginx-0.0.4-2004-06-10-22:36:57 import
Igor Sysoev <igor@sysoev.ru>
parents: 342
diff changeset
195 tree->size = ngx_pagesize;
340
0bf903191ceb nginx-0.0.3-2004-05-25-19:28:46 import
Igor Sysoev <igor@sysoev.ru>
parents:
diff changeset
196 }
0bf903191ceb nginx-0.0.3-2004-05-25-19:28:46 import
Igor Sysoev <igor@sysoev.ru>
parents:
diff changeset
197
341
41e552841296 nginx-0.0.3-2004-05-26-19:30:12 import
Igor Sysoev <igor@sysoev.ru>
parents: 340
diff changeset
198 p = tree->start;
41e552841296 nginx-0.0.3-2004-05-26-19:30:12 import
Igor Sysoev <igor@sysoev.ru>
parents: 340
diff changeset
199 tree->start += size;
340
0bf903191ceb nginx-0.0.3-2004-05-25-19:28:46 import
Igor Sysoev <igor@sysoev.ru>
parents:
diff changeset
200 tree->size -= size;
0bf903191ceb nginx-0.0.3-2004-05-25-19:28:46 import
Igor Sysoev <igor@sysoev.ru>
parents:
diff changeset
201
0bf903191ceb nginx-0.0.3-2004-05-25-19:28:46 import
Igor Sysoev <igor@sysoev.ru>
parents:
diff changeset
202 return p;
0bf903191ceb nginx-0.0.3-2004-05-25-19:28:46 import
Igor Sysoev <igor@sysoev.ru>
parents:
diff changeset
203 }