Mercurial > hg > nginx-quic

annotate src/core/ngx_radix_tree.c @ 342:0ee0642af5f1

Find changesets by keywords (author, files, the commit message), revision number or hash, or revset expression.
nginx-0.0.3-2004-05-26-23:33:53 import
author Igor Sysoev <igor@sysoev.ru>
date Wed, 26 May 2004 19:33:53 +0000
parents 41e552841296
children af4c6b45a687
Ignore whitespace changes - Everywhere: Within whitespace: At end of lines:
rev   line source
340
0bf903191ceb nginx-0.0.3-2004-05-25-19:28:46 import
Igor Sysoev <igor@sysoev.ru>
parents:
diff changeset
1
0bf903191ceb nginx-0.0.3-2004-05-25-19:28:46 import
Igor Sysoev <igor@sysoev.ru>
parents:
diff changeset
2 #include <ngx_config.h>
0bf903191ceb nginx-0.0.3-2004-05-25-19:28:46 import
Igor Sysoev <igor@sysoev.ru>
parents:
diff changeset
3 #include <ngx_core.h>
0bf903191ceb nginx-0.0.3-2004-05-25-19:28:46 import
Igor Sysoev <igor@sysoev.ru>
parents:
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4
0bf903191ceb nginx-0.0.3-2004-05-25-19:28:46 import
Igor Sysoev <igor@sysoev.ru>
parents:
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5
0bf903191ceb nginx-0.0.3-2004-05-25-19:28:46 import
Igor Sysoev <igor@sysoev.ru>
parents:
diff changeset
6 /* STUB: page size */
0bf903191ceb nginx-0.0.3-2004-05-25-19:28:46 import
Igor Sysoev <igor@sysoev.ru>
parents:
diff changeset
7 #define NGX_RADIX_TREE_POOL_SIZE 4096
0bf903191ceb nginx-0.0.3-2004-05-25-19:28:46 import
Igor Sysoev <igor@sysoev.ru>
parents:
diff changeset
8
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 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:
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11
0bf903191ceb nginx-0.0.3-2004-05-25-19:28:46 import
Igor Sysoev <igor@sysoev.ru>
parents:
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12
0bf903191ceb nginx-0.0.3-2004-05-25-19:28:46 import
Igor Sysoev <igor@sysoev.ru>
parents:
diff changeset
13 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
14 {
0bf903191ceb nginx-0.0.3-2004-05-25-19:28:46 import
Igor Sysoev <igor@sysoev.ru>
parents:
diff changeset
15 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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16
0bf903191ceb nginx-0.0.3-2004-05-25-19:28:46 import
Igor Sysoev <igor@sysoev.ru>
parents:
diff changeset
17 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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18 return NULL;
0bf903191ceb nginx-0.0.3-2004-05-25-19:28:46 import
Igor Sysoev <igor@sysoev.ru>
parents:
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19 }
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:
diff changeset
21 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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22 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
23 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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24 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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25
342
0ee0642af5f1 nginx-0.0.3-2004-05-26-23:33:53 import
Igor Sysoev <igor@sysoev.ru>
parents: 341
diff changeset
26 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
diff changeset
27 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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28 }
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 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
31 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
32 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
33 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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34
340
0bf903191ceb nginx-0.0.3-2004-05-25-19:28:46 import
Igor Sysoev <igor@sysoev.ru>
parents:
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35 return tree;
0bf903191ceb nginx-0.0.3-2004-05-25-19:28:46 import
Igor Sysoev <igor@sysoev.ru>
parents:
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36 }
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:
diff changeset
39 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
40 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
41 {
0bf903191ceb nginx-0.0.3-2004-05-25-19:28:46 import
Igor Sysoev <igor@sysoev.ru>
parents:
diff changeset
42 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
43 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
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44
0ee0642af5f1 nginx-0.0.3-2004-05-26-23:33:53 import
Igor Sysoev <igor@sysoev.ru>
parents: 341
diff changeset
45 bit = 0x80000000;
0ee0642af5f1 nginx-0.0.3-2004-05-26-23:33:53 import
Igor Sysoev <igor@sysoev.ru>
parents: 341
diff changeset
46 node = tree->root;
0ee0642af5f1 nginx-0.0.3-2004-05-26-23:33:53 import
Igor Sysoev <igor@sysoev.ru>
parents: 341
diff changeset
47 next = NULL;
0ee0642af5f1 nginx-0.0.3-2004-05-26-23:33:53 import
Igor Sysoev <igor@sysoev.ru>
parents: 341
diff changeset
48
0ee0642af5f1 nginx-0.0.3-2004-05-26-23:33:53 import
Igor Sysoev <igor@sysoev.ru>
parents: 341
diff changeset
49 while (bit & mask) {
0ee0642af5f1 nginx-0.0.3-2004-05-26-23:33:53 import
Igor Sysoev <igor@sysoev.ru>
parents: 341
diff changeset
50 if (key & bit) {
0ee0642af5f1 nginx-0.0.3-2004-05-26-23:33:53 import
Igor Sysoev <igor@sysoev.ru>
parents: 341
diff changeset
51 next = node->right;
0ee0642af5f1 nginx-0.0.3-2004-05-26-23:33:53 import
Igor Sysoev <igor@sysoev.ru>
parents: 341
diff changeset
52
0ee0642af5f1 nginx-0.0.3-2004-05-26-23:33:53 import
Igor Sysoev <igor@sysoev.ru>
parents: 341
diff changeset
53 } else {
0ee0642af5f1 nginx-0.0.3-2004-05-26-23:33:53 import
Igor Sysoev <igor@sysoev.ru>
parents: 341
diff changeset
54 next = node->left;
0ee0642af5f1 nginx-0.0.3-2004-05-26-23:33:53 import
Igor Sysoev <igor@sysoev.ru>
parents: 341
diff changeset
55 }
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 bit >>= 1;
0ee0642af5f1 nginx-0.0.3-2004-05-26-23:33:53 import
Igor Sysoev <igor@sysoev.ru>
parents: 341
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58
0ee0642af5f1 nginx-0.0.3-2004-05-26-23:33:53 import
Igor Sysoev <igor@sysoev.ru>
parents: 341
diff changeset
59 if (next == NULL) {
0ee0642af5f1 nginx-0.0.3-2004-05-26-23:33:53 import
Igor Sysoev <igor@sysoev.ru>
parents: 341
diff changeset
60 break;
0ee0642af5f1 nginx-0.0.3-2004-05-26-23:33:53 import
Igor Sysoev <igor@sysoev.ru>
parents: 341
diff changeset
61 }
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 node = next;
0ee0642af5f1 nginx-0.0.3-2004-05-26-23:33:53 import
Igor Sysoev <igor@sysoev.ru>
parents: 341
diff changeset
64 }
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 if (next) {
0ee0642af5f1 nginx-0.0.3-2004-05-26-23:33:53 import
Igor Sysoev <igor@sysoev.ru>
parents: 341
diff changeset
67 if (node->value) {
0ee0642af5f1 nginx-0.0.3-2004-05-26-23:33:53 import
Igor Sysoev <igor@sysoev.ru>
parents: 341
diff changeset
68 return NGX_BUSY;
0ee0642af5f1 nginx-0.0.3-2004-05-26-23:33:53 import
Igor Sysoev <igor@sysoev.ru>
parents: 341
diff changeset
69 }
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 node->value = value;
0ee0642af5f1 nginx-0.0.3-2004-05-26-23:33:53 import
Igor Sysoev <igor@sysoev.ru>
parents: 341
diff changeset
72 return NGX_OK;
0ee0642af5f1 nginx-0.0.3-2004-05-26-23:33:53 import
Igor Sysoev <igor@sysoev.ru>
parents: 341
diff changeset
73 }
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 while (bit & mask) {
0ee0642af5f1 nginx-0.0.3-2004-05-26-23:33:53 import
Igor Sysoev <igor@sysoev.ru>
parents: 341
diff changeset
76 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
77 return NGX_ERROR;
0ee0642af5f1 nginx-0.0.3-2004-05-26-23:33:53 import
Igor Sysoev <igor@sysoev.ru>
parents: 341
diff changeset
78 }
0ee0642af5f1 nginx-0.0.3-2004-05-26-23:33:53 import
Igor Sysoev <igor@sysoev.ru>
parents: 341
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79
0ee0642af5f1 nginx-0.0.3-2004-05-26-23:33:53 import
Igor Sysoev <igor@sysoev.ru>
parents: 341
diff changeset
80 next->value = value;
0ee0642af5f1 nginx-0.0.3-2004-05-26-23:33:53 import
Igor Sysoev <igor@sysoev.ru>
parents: 341
diff changeset
81 next->right = NULL;
0ee0642af5f1 nginx-0.0.3-2004-05-26-23:33:53 import
Igor Sysoev <igor@sysoev.ru>
parents: 341
diff changeset
82 next->left = NULL;
0ee0642af5f1 nginx-0.0.3-2004-05-26-23:33:53 import
Igor Sysoev <igor@sysoev.ru>
parents: 341
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83 next->parent = node;
0ee0642af5f1 nginx-0.0.3-2004-05-26-23:33:53 import
Igor Sysoev <igor@sysoev.ru>
parents: 341
diff changeset
84
0ee0642af5f1 nginx-0.0.3-2004-05-26-23:33:53 import
Igor Sysoev <igor@sysoev.ru>
parents: 341
diff changeset
85 if (key & bit) {
0ee0642af5f1 nginx-0.0.3-2004-05-26-23:33:53 import
Igor Sysoev <igor@sysoev.ru>
parents: 341
diff changeset
86 node->right = next;
0ee0642af5f1 nginx-0.0.3-2004-05-26-23:33:53 import
Igor Sysoev <igor@sysoev.ru>
parents: 341
diff changeset
87
0ee0642af5f1 nginx-0.0.3-2004-05-26-23:33:53 import
Igor Sysoev <igor@sysoev.ru>
parents: 341
diff changeset
88 } else {
0ee0642af5f1 nginx-0.0.3-2004-05-26-23:33:53 import
Igor Sysoev <igor@sysoev.ru>
parents: 341
diff changeset
89 node->left = next;
0ee0642af5f1 nginx-0.0.3-2004-05-26-23:33:53 import
Igor Sysoev <igor@sysoev.ru>
parents: 341
diff changeset
90 }
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 bit >>= 1;
0ee0642af5f1 nginx-0.0.3-2004-05-26-23:33:53 import
Igor Sysoev <igor@sysoev.ru>
parents: 341
diff changeset
93 node = next;
0ee0642af5f1 nginx-0.0.3-2004-05-26-23:33:53 import
Igor Sysoev <igor@sysoev.ru>
parents: 341
diff changeset
94 }
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 return NGX_OK;
0ee0642af5f1 nginx-0.0.3-2004-05-26-23:33:53 import
Igor Sysoev <igor@sysoev.ru>
parents: 341
diff changeset
97 }
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 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
101 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
102 {
0ee0642af5f1 nginx-0.0.3-2004-05-26-23:33:53 import
Igor Sysoev <igor@sysoev.ru>
parents: 341
diff changeset
103 uint32_t bit;
0ee0642af5f1 nginx-0.0.3-2004-05-26-23:33:53 import
Igor Sysoev <igor@sysoev.ru>
parents: 341
diff changeset
104 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
105
0bf903191ceb nginx-0.0.3-2004-05-25-19:28:46 import
Igor Sysoev <igor@sysoev.ru>
parents:
diff changeset
106 bit = 0x80000000;
0bf903191ceb nginx-0.0.3-2004-05-25-19:28:46 import
Igor Sysoev <igor@sysoev.ru>
parents:
diff changeset
107 node = tree->root;
0bf903191ceb nginx-0.0.3-2004-05-25-19:28:46 import
Igor Sysoev <igor@sysoev.ru>
parents:
diff changeset
108
0bf903191ceb nginx-0.0.3-2004-05-25-19:28:46 import
Igor Sysoev <igor@sysoev.ru>
parents:
diff changeset
109 while (node && (bit & mask)) {
0bf903191ceb nginx-0.0.3-2004-05-25-19:28:46 import
Igor Sysoev <igor@sysoev.ru>
parents:
diff changeset
110 if (key & bit) {
0bf903191ceb nginx-0.0.3-2004-05-25-19:28:46 import
Igor Sysoev <igor@sysoev.ru>
parents:
diff changeset
111 node = node->right;
0bf903191ceb nginx-0.0.3-2004-05-25-19:28:46 import
Igor Sysoev <igor@sysoev.ru>
parents:
diff changeset
112
0bf903191ceb nginx-0.0.3-2004-05-25-19:28:46 import
Igor Sysoev <igor@sysoev.ru>
parents:
diff changeset
113 } else {
0bf903191ceb nginx-0.0.3-2004-05-25-19:28:46 import
Igor Sysoev <igor@sysoev.ru>
parents:
diff changeset
114 node = node->left;
0bf903191ceb nginx-0.0.3-2004-05-25-19:28:46 import
Igor Sysoev <igor@sysoev.ru>
parents:
diff changeset
115 }
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 bit >>= 1;
0bf903191ceb nginx-0.0.3-2004-05-25-19:28:46 import
Igor Sysoev <igor@sysoev.ru>
parents:
diff changeset
118 }
0bf903191ceb nginx-0.0.3-2004-05-25-19:28:46 import
Igor Sysoev <igor@sysoev.ru>
parents:
diff changeset
119
342
0ee0642af5f1 nginx-0.0.3-2004-05-26-23:33:53 import
Igor Sysoev <igor@sysoev.ru>
parents: 341
diff changeset
120 if (node == NULL) {
0ee0642af5f1 nginx-0.0.3-2004-05-26-23:33:53 import
Igor Sysoev <igor@sysoev.ru>
parents: 341
diff changeset
121 return NGX_ERROR;
0ee0642af5f1 nginx-0.0.3-2004-05-26-23:33:53 import
Igor Sysoev <igor@sysoev.ru>
parents: 341
diff changeset
122 }
340
0bf903191ceb nginx-0.0.3-2004-05-25-19:28:46 import
Igor Sysoev <igor@sysoev.ru>
parents:
diff changeset
123
342
0ee0642af5f1 nginx-0.0.3-2004-05-26-23:33:53 import
Igor Sysoev <igor@sysoev.ru>
parents: 341
diff changeset
124 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
125 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
126 return NGX_OK;
0bf903191ceb nginx-0.0.3-2004-05-25-19:28:46 import
Igor Sysoev <igor@sysoev.ru>
parents:
diff changeset
127 }
0bf903191ceb nginx-0.0.3-2004-05-25-19:28:46 import
Igor Sysoev <igor@sysoev.ru>
parents:
diff changeset
128
342
0ee0642af5f1 nginx-0.0.3-2004-05-26-23:33:53 import
Igor Sysoev <igor@sysoev.ru>
parents: 341
diff changeset
129 for ( ;; ) {
0ee0642af5f1 nginx-0.0.3-2004-05-26-23:33:53 import
Igor Sysoev <igor@sysoev.ru>
parents: 341
diff changeset
130 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
131 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
132 } else {
0ee0642af5f1 nginx-0.0.3-2004-05-26-23:33:53 import
Igor Sysoev <igor@sysoev.ru>
parents: 341
diff changeset
133 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
134 }
0bf903191ceb nginx-0.0.3-2004-05-25-19:28:46 import
Igor Sysoev <igor@sysoev.ru>
parents:
diff changeset
135
342
0ee0642af5f1 nginx-0.0.3-2004-05-26-23:33:53 import
Igor Sysoev <igor@sysoev.ru>
parents: 341
diff changeset
136 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
137 tree->free = node;
340
0bf903191ceb nginx-0.0.3-2004-05-25-19:28:46 import
Igor Sysoev <igor@sysoev.ru>
parents:
diff changeset
138
342
0ee0642af5f1 nginx-0.0.3-2004-05-26-23:33:53 import
Igor Sysoev <igor@sysoev.ru>
parents: 341
diff changeset
139 node = node->parent;
0ee0642af5f1 nginx-0.0.3-2004-05-26-23:33:53 import
Igor Sysoev <igor@sysoev.ru>
parents: 341
diff changeset
140
0ee0642af5f1 nginx-0.0.3-2004-05-26-23:33:53 import
Igor Sysoev <igor@sysoev.ru>
parents: 341
diff changeset
141 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
142 break;
340
0bf903191ceb nginx-0.0.3-2004-05-25-19:28:46 import
Igor Sysoev <igor@sysoev.ru>
parents:
diff changeset
143 }
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 return NGX_OK;
0bf903191ceb nginx-0.0.3-2004-05-25-19:28:46 import
Igor Sysoev <igor@sysoev.ru>
parents:
diff changeset
147 }
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 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
151 {
0bf903191ceb nginx-0.0.3-2004-05-25-19:28:46 import
Igor Sysoev <igor@sysoev.ru>
parents:
diff changeset
152 uint32_t bit;
0bf903191ceb nginx-0.0.3-2004-05-25-19:28:46 import
Igor Sysoev <igor@sysoev.ru>
parents:
diff changeset
153 uintptr_t value;
0bf903191ceb nginx-0.0.3-2004-05-25-19:28:46 import
Igor Sysoev <igor@sysoev.ru>
parents:
diff changeset
154 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
155
0bf903191ceb nginx-0.0.3-2004-05-25-19:28:46 import
Igor Sysoev <igor@sysoev.ru>
parents:
diff changeset
156 bit = 0x80000000;
341
41e552841296 nginx-0.0.3-2004-05-26-19:30:12 import
Igor Sysoev <igor@sysoev.ru>
parents: 340
diff changeset
157 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
158 node = tree->root;
0bf903191ceb nginx-0.0.3-2004-05-25-19:28:46 import
Igor Sysoev <igor@sysoev.ru>
parents:
diff changeset
159
0bf903191ceb nginx-0.0.3-2004-05-25-19:28:46 import
Igor Sysoev <igor@sysoev.ru>
parents:
diff changeset
160 while (node) {
0bf903191ceb nginx-0.0.3-2004-05-25-19:28:46 import
Igor Sysoev <igor@sysoev.ru>
parents:
diff changeset
161 if (node->value) {
0bf903191ceb nginx-0.0.3-2004-05-25-19:28:46 import
Igor Sysoev <igor@sysoev.ru>
parents:
diff changeset
162 value = node->value;
0bf903191ceb nginx-0.0.3-2004-05-25-19:28:46 import
Igor Sysoev <igor@sysoev.ru>
parents:
diff changeset
163 }
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 if (key & bit) {
0bf903191ceb nginx-0.0.3-2004-05-25-19:28:46 import
Igor Sysoev <igor@sysoev.ru>
parents:
diff changeset
166 node = node->right;
0bf903191ceb nginx-0.0.3-2004-05-25-19:28:46 import
Igor Sysoev <igor@sysoev.ru>
parents:
diff changeset
167
0bf903191ceb nginx-0.0.3-2004-05-25-19:28:46 import
Igor Sysoev <igor@sysoev.ru>
parents:
diff changeset
168 } else {
0bf903191ceb nginx-0.0.3-2004-05-25-19:28:46 import
Igor Sysoev <igor@sysoev.ru>
parents:
diff changeset
169 node = node->left;
0bf903191ceb nginx-0.0.3-2004-05-25-19:28:46 import
Igor Sysoev <igor@sysoev.ru>
parents:
diff changeset
170 }
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 bit >>= 1;
0bf903191ceb nginx-0.0.3-2004-05-25-19:28:46 import
Igor Sysoev <igor@sysoev.ru>
parents:
diff changeset
173 }
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 return value;
0bf903191ceb nginx-0.0.3-2004-05-25-19:28:46 import
Igor Sysoev <igor@sysoev.ru>
parents:
diff changeset
176 }
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 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
180 {
0bf903191ceb nginx-0.0.3-2004-05-25-19:28:46 import
Igor Sysoev <igor@sysoev.ru>
parents:
diff changeset
181 char *p;
0bf903191ceb nginx-0.0.3-2004-05-25-19:28:46 import
Igor Sysoev <igor@sysoev.ru>
parents:
diff changeset
182
341
41e552841296 nginx-0.0.3-2004-05-26-19:30:12 import
Igor Sysoev <igor@sysoev.ru>
parents: 340
diff changeset
183 if (tree->free) {
41e552841296 nginx-0.0.3-2004-05-26-19:30:12 import
Igor Sysoev <igor@sysoev.ru>
parents: 340
diff changeset
184 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
185 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
186 return p;
41e552841296 nginx-0.0.3-2004-05-26-19:30:12 import
Igor Sysoev <igor@sysoev.ru>
parents: 340
diff changeset
187 }
41e552841296 nginx-0.0.3-2004-05-26-19:30:12 import
Igor Sysoev <igor@sysoev.ru>
parents: 340
diff changeset
188
340
0bf903191ceb nginx-0.0.3-2004-05-25-19:28:46 import
Igor Sysoev <igor@sysoev.ru>
parents:
diff changeset
189 if (tree->size < size) {
341
41e552841296 nginx-0.0.3-2004-05-26-19:30:12 import
Igor Sysoev <igor@sysoev.ru>
parents: 340
diff changeset
190 if (!(tree->start = ngx_palloc(tree->pool, NGX_RADIX_TREE_POOL_SIZE))) {
340
0bf903191ceb nginx-0.0.3-2004-05-25-19:28:46 import
Igor Sysoev <igor@sysoev.ru>
parents:
diff changeset
191 return NULL;
0bf903191ceb nginx-0.0.3-2004-05-25-19:28:46 import
Igor Sysoev <igor@sysoev.ru>
parents:
diff changeset
192 }
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 tree->size = NGX_RADIX_TREE_POOL_SIZE;
0bf903191ceb nginx-0.0.3-2004-05-25-19:28:46 import
Igor Sysoev <igor@sysoev.ru>
parents:
diff changeset
195 }
0bf903191ceb nginx-0.0.3-2004-05-25-19:28:46 import
Igor Sysoev <igor@sysoev.ru>
parents:
diff changeset
196
341
41e552841296 nginx-0.0.3-2004-05-26-19:30:12 import
Igor Sysoev <igor@sysoev.ru>
parents: 340
diff changeset
197 p = tree->start;
41e552841296 nginx-0.0.3-2004-05-26-19:30:12 import
Igor Sysoev <igor@sysoev.ru>
parents: 340
diff changeset
198 tree->start += size;
340
0bf903191ceb nginx-0.0.3-2004-05-25-19:28:46 import
Igor Sysoev <igor@sysoev.ru>
parents:
diff changeset
199 tree->size -= size;
0bf903191ceb nginx-0.0.3-2004-05-25-19:28:46 import
Igor Sysoev <igor@sysoev.ru>
parents:
diff changeset
200
0bf903191ceb nginx-0.0.3-2004-05-25-19:28:46 import
Igor Sysoev <igor@sysoev.ru>
parents:
diff changeset
201 return p;
0bf903191ceb nginx-0.0.3-2004-05-25-19:28:46 import
Igor Sysoev <igor@sysoev.ru>
parents:
diff changeset
202 }