Mercurial > hg > nginx

annotate src/core/ngx_radix_tree.c @ 2369:12e8e0045096 radix_with_skip

Find changesets by keywords (author, files, the commit message), revision number or hash, or revset expression.
add radix tree skip node
author Igor Sysoev <igor@sysoev.ru>
date Wed, 03 Dec 2008 13:26:02 +0000
parents 62be1c4edfba
children
Ignore whitespace changes - Everywhere: Within whitespace: At end of lines:
rev   line source
441
da8c5707af39 nginx-0.1.0-2004-09-28-12:34:51 import; set copyright and remove unused files
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parents: 351
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1
da8c5707af39 nginx-0.1.0-2004-09-28-12:34:51 import; set copyright and remove unused files
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2 /*
444
42d11f017717 nginx-0.1.0-2004-09-29-20:00:49 import; remove years from copyright
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3 * Copyright (C) Igor Sysoev
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da8c5707af39 nginx-0.1.0-2004-09-28-12:34:51 import; set copyright and remove unused files
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4 */
da8c5707af39 nginx-0.1.0-2004-09-28-12:34:51 import; set copyright and remove unused files
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5
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0bf903191ceb nginx-0.0.3-2004-05-25-19:28:46 import
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6
0bf903191ceb nginx-0.0.3-2004-05-25-19:28:46 import
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7 #include <ngx_config.h>
0bf903191ceb nginx-0.0.3-2004-05-25-19:28:46 import
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8 #include <ngx_core.h>
0bf903191ceb nginx-0.0.3-2004-05-25-19:28:46 import
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9
0bf903191ceb nginx-0.0.3-2004-05-25-19:28:46 import
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10
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11 static ngx_int_t ngx_radix32tree_delete_node(ngx_radix_tree_t *tree,
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12 uint32_t key, uint32_t mask, ngx_radix_node_t **pnode, uint32_t bit);
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13 void ngx_radix32tree_compress_node(ngx_radix_tree_t *tree,
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14 ngx_radix_node_t *node);
485
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15 static void *ngx_radix_alloc(ngx_radix_tree_t *tree);
340
0bf903191ceb nginx-0.0.3-2004-05-25-19:28:46 import
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16
0bf903191ceb nginx-0.0.3-2004-05-25-19:28:46 import
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17
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18 ngx_radix_tree_t *
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19 ngx_radix_tree_create(ngx_pool_t *pool, ngx_int_t preallocate)
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20 {
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21 uint32_t key, mask, inc;
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22 ngx_radix_tree_t *tree;
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23
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24 tree = ngx_palloc(pool, sizeof(ngx_radix_tree_t));
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25 if (tree == NULL) {
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26 return NULL;
0bf903191ceb nginx-0.0.3-2004-05-25-19:28:46 import
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27 }
0bf903191ceb nginx-0.0.3-2004-05-25-19:28:46 import
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28
0bf903191ceb nginx-0.0.3-2004-05-25-19:28:46 import
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29 tree->pool = pool;
0bf903191ceb nginx-0.0.3-2004-05-25-19:28:46 import
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30 tree->free = NULL;
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41e552841296 nginx-0.0.3-2004-05-26-19:30:12 import
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31 tree->start = NULL;
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32 tree->size = 0;
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33 tree->count = 0;
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34
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35 tree->root = ngx_radix_alloc(tree);
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36 if (tree->root == NULL) {
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37 return NULL;
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38 }
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39
0ee0642af5f1 nginx-0.0.3-2004-05-26-23:33:53 import
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40 tree->root->right = NULL;
0ee0642af5f1 nginx-0.0.3-2004-05-26-23:33:53 import
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41 tree->root->left = NULL;
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42 tree->root->skip = 0;
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43 tree->root->value = NGX_RADIX_NO_VALUE;
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44
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45 if (preallocate == 0) {
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46 return tree;
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47 }
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48
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49 /*
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50 * Preallocation of first nodes : 0, 1, 00, 01, 10, 11, 000, 001, etc.
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51 * increases TLB hits even if for first lookup iterations.
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52 * On 32-bit platforms the 7 preallocated bits takes continuous 4K,
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53 * 8 - 8K, 9 - 16K, etc. On 64-bit platforms the 6 preallocated bits
489
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54 * takes continuous 4K, 7 - 8K, 8 - 16K, etc. There is no sense to
45a460f82aec nginx-0.1.19-RELEASE import
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55 * to preallocate more than one page, because further preallocation
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56 * distributes the only bit per page. Instead, a random insertion
489
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57 * may distribute several bits per page.
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58 *
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59 * Thus, by default we preallocate maximum
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60 * 6 bits on amd64 (64-bit platform and 4K pages)
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61 * 7 bits on i386 (32-bit platform and 4K pages)
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62 * 7 bits on sparc64 in 64-bit mode (8K pages)
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63 * 8 bits on sparc64 in 32-bit mode (8K pages)
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64 */
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65
489
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66 if (preallocate == -1) {
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67 switch (ngx_pagesize / sizeof(ngx_radix_tree_t)) {
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68
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69 /* amd64 */
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70 case 128:
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71 preallocate = 6;
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72 break;
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73
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74 /* i386, sparc64 */
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75 case 256:
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76 preallocate = 7;
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77 break;
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78
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79 /* sparc64 in 32-bit mode */
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80 default:
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81 preallocate = 8;
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82 }
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83 }
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84
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85 mask = 0;
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86 inc = 0x80000000;
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87
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88 while (preallocate--) {
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89
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90 key = 0;
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91 mask >>= 1;
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92 mask |= 0x80000000;
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93
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94 do {
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95 if (ngx_radix32tree_insert(tree, key, mask, NGX_RADIX_NO_VALUE)
1130
119605405c4b style fix
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96 != NGX_OK)
487
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97 {
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98 return NULL;
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99 }
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100
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101 key += inc;
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102
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103 } while (key);
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104
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105 inc >>= 1;
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106 }
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107
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108 return tree;
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109 }
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110
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111
487
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112 ngx_int_t
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113 ngx_radix32tree_insert(ngx_radix_tree_t *tree, uint32_t key, uint32_t mask,
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114 uintptr_t value)
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115 {
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116 uint32_t bit;
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117 ngx_radix_node_t *node, *next;
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118
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119 bit = 0x80000000;
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120
342
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121 node = tree->root;
485
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122 next = tree->root;
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123
0ee0642af5f1 nginx-0.0.3-2004-05-26-23:33:53 import
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124 while (bit & mask) {
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125 if (key & bit) {
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126 next = node->right;
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127
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128 } else {
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129 next = node->left;
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130 }
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diff changeset
131
0ee0642af5f1 nginx-0.0.3-2004-05-26-23:33:53 import
Igor Sysoev <igor@sysoev.ru>
parents: 341
diff changeset
132 if (next == NULL) {
0ee0642af5f1 nginx-0.0.3-2004-05-26-23:33:53 import
Igor Sysoev <igor@sysoev.ru>
parents: 341
diff changeset
133 break;
0ee0642af5f1 nginx-0.0.3-2004-05-26-23:33:53 import
Igor Sysoev <igor@sysoev.ru>
parents: 341
diff changeset
134 }
0ee0642af5f1 nginx-0.0.3-2004-05-26-23:33:53 import
Igor Sysoev <igor@sysoev.ru>
parents: 341
diff changeset
135
485
4ebe09b07e30 nginx-0.1.17-RELEASE import
Igor Sysoev <igor@sysoev.ru>
parents: 444
diff changeset
136 bit >>= 1;
342
0ee0642af5f1 nginx-0.0.3-2004-05-26-23:33:53 import
Igor Sysoev <igor@sysoev.ru>
parents: 341
diff changeset
137 node = next;
0ee0642af5f1 nginx-0.0.3-2004-05-26-23:33:53 import
Igor Sysoev <igor@sysoev.ru>
parents: 341
diff changeset
138 }
0ee0642af5f1 nginx-0.0.3-2004-05-26-23:33:53 import
Igor Sysoev <igor@sysoev.ru>
parents: 341
diff changeset
139
0ee0642af5f1 nginx-0.0.3-2004-05-26-23:33:53 import
Igor Sysoev <igor@sysoev.ru>
parents: 341
diff changeset
140 if (next) {
485
4ebe09b07e30 nginx-0.1.17-RELEASE import
Igor Sysoev <igor@sysoev.ru>
parents: 444
diff changeset
141 if (node->value != NGX_RADIX_NO_VALUE) {
342
0ee0642af5f1 nginx-0.0.3-2004-05-26-23:33:53 import
Igor Sysoev <igor@sysoev.ru>
parents: 341
diff changeset
142 return NGX_BUSY;
0ee0642af5f1 nginx-0.0.3-2004-05-26-23:33:53 import
Igor Sysoev <igor@sysoev.ru>
parents: 341
diff changeset
143 }
0ee0642af5f1 nginx-0.0.3-2004-05-26-23:33:53 import
Igor Sysoev <igor@sysoev.ru>
parents: 341
diff changeset
144
0ee0642af5f1 nginx-0.0.3-2004-05-26-23:33:53 import
Igor Sysoev <igor@sysoev.ru>
parents: 341
diff changeset
145 node->value = value;
0ee0642af5f1 nginx-0.0.3-2004-05-26-23:33:53 import
Igor Sysoev <igor@sysoev.ru>
parents: 341
diff changeset
146 return NGX_OK;
0ee0642af5f1 nginx-0.0.3-2004-05-26-23:33:53 import
Igor Sysoev <igor@sysoev.ru>
parents: 341
diff changeset
147 }
0ee0642af5f1 nginx-0.0.3-2004-05-26-23:33:53 import
Igor Sysoev <igor@sysoev.ru>
parents: 341
diff changeset
148
0ee0642af5f1 nginx-0.0.3-2004-05-26-23:33:53 import
Igor Sysoev <igor@sysoev.ru>
parents: 341
diff changeset
149 while (bit & mask) {
501
d4ea69372b94 nginx-0.1.25-RELEASE import
Igor Sysoev <igor@sysoev.ru>
parents: 499
diff changeset
150 next = ngx_radix_alloc(tree);
d4ea69372b94 nginx-0.1.25-RELEASE import
Igor Sysoev <igor@sysoev.ru>
parents: 499
diff changeset
151 if (next == NULL) {
342
0ee0642af5f1 nginx-0.0.3-2004-05-26-23:33:53 import
Igor Sysoev <igor@sysoev.ru>
parents: 341
diff changeset
152 return NGX_ERROR;
0ee0642af5f1 nginx-0.0.3-2004-05-26-23:33:53 import
Igor Sysoev <igor@sysoev.ru>
parents: 341
diff changeset
153 }
0ee0642af5f1 nginx-0.0.3-2004-05-26-23:33:53 import
Igor Sysoev <igor@sysoev.ru>
parents: 341
diff changeset
154
0ee0642af5f1 nginx-0.0.3-2004-05-26-23:33:53 import
Igor Sysoev <igor@sysoev.ru>
parents: 341
diff changeset
155 next->right = NULL;
0ee0642af5f1 nginx-0.0.3-2004-05-26-23:33:53 import
Igor Sysoev <igor@sysoev.ru>
parents: 341
diff changeset
156 next->left = NULL;
2368
62be1c4edfba remove parent from radix tree node to add skip field
Igor Sysoev <igor@sysoev.ru>
parents: 2366
diff changeset
157 next->skip = 0;
485
4ebe09b07e30 nginx-0.1.17-RELEASE import
Igor Sysoev <igor@sysoev.ru>
parents: 444
diff changeset
158 next->value = NGX_RADIX_NO_VALUE;
342
0ee0642af5f1 nginx-0.0.3-2004-05-26-23:33:53 import
Igor Sysoev <igor@sysoev.ru>
parents: 341
diff changeset
159
0ee0642af5f1 nginx-0.0.3-2004-05-26-23:33:53 import
Igor Sysoev <igor@sysoev.ru>
parents: 341
diff changeset
160 if (key & bit) {
0ee0642af5f1 nginx-0.0.3-2004-05-26-23:33:53 import
Igor Sysoev <igor@sysoev.ru>
parents: 341
diff changeset
161 node->right = next;
0ee0642af5f1 nginx-0.0.3-2004-05-26-23:33:53 import
Igor Sysoev <igor@sysoev.ru>
parents: 341
diff changeset
162
0ee0642af5f1 nginx-0.0.3-2004-05-26-23:33:53 import
Igor Sysoev <igor@sysoev.ru>
parents: 341
diff changeset
163 } else {
0ee0642af5f1 nginx-0.0.3-2004-05-26-23:33:53 import
Igor Sysoev <igor@sysoev.ru>
parents: 341
diff changeset
164 node->left = next;
0ee0642af5f1 nginx-0.0.3-2004-05-26-23:33:53 import
Igor Sysoev <igor@sysoev.ru>
parents: 341
diff changeset
165 }
0ee0642af5f1 nginx-0.0.3-2004-05-26-23:33:53 import
Igor Sysoev <igor@sysoev.ru>
parents: 341
diff changeset
166
0ee0642af5f1 nginx-0.0.3-2004-05-26-23:33:53 import
Igor Sysoev <igor@sysoev.ru>
parents: 341
diff changeset
167 bit >>= 1;
0ee0642af5f1 nginx-0.0.3-2004-05-26-23:33:53 import
Igor Sysoev <igor@sysoev.ru>
parents: 341
diff changeset
168 node = next;
0ee0642af5f1 nginx-0.0.3-2004-05-26-23:33:53 import
Igor Sysoev <igor@sysoev.ru>
parents: 341
diff changeset
169 }
0ee0642af5f1 nginx-0.0.3-2004-05-26-23:33:53 import
Igor Sysoev <igor@sysoev.ru>
parents: 341
diff changeset
170
485
4ebe09b07e30 nginx-0.1.17-RELEASE import
Igor Sysoev <igor@sysoev.ru>
parents: 444
diff changeset
171 node->value = value;
4ebe09b07e30 nginx-0.1.17-RELEASE import
Igor Sysoev <igor@sysoev.ru>
parents: 444
diff changeset
172
342
0ee0642af5f1 nginx-0.0.3-2004-05-26-23:33:53 import
Igor Sysoev <igor@sysoev.ru>
parents: 341
diff changeset
173 return NGX_OK;
0ee0642af5f1 nginx-0.0.3-2004-05-26-23:33:53 import
Igor Sysoev <igor@sysoev.ru>
parents: 341
diff changeset
174 }
0ee0642af5f1 nginx-0.0.3-2004-05-26-23:33:53 import
Igor Sysoev <igor@sysoev.ru>
parents: 341
diff changeset
175
0ee0642af5f1 nginx-0.0.3-2004-05-26-23:33:53 import
Igor Sysoev <igor@sysoev.ru>
parents: 341
diff changeset
176
487
31ff3e943e16 nginx-0.1.18-RELEASE import
Igor Sysoev <igor@sysoev.ru>
parents: 485
diff changeset
177 ngx_int_t
31ff3e943e16 nginx-0.1.18-RELEASE import
Igor Sysoev <igor@sysoev.ru>
parents: 485
diff changeset
178 ngx_radix32tree_delete(ngx_radix_tree_t *tree, uint32_t key, uint32_t mask)
342
0ee0642af5f1 nginx-0.0.3-2004-05-26-23:33:53 import
Igor Sysoev <igor@sysoev.ru>
parents: 341
diff changeset
179 {
2368
62be1c4edfba remove parent from radix tree node to add skip field
Igor Sysoev <igor@sysoev.ru>
parents: 2366
diff changeset
180 return ngx_radix32tree_delete_node(tree, key, mask, &tree->root,
62be1c4edfba remove parent from radix tree node to add skip field
Igor Sysoev <igor@sysoev.ru>
parents: 2366
diff changeset
181 0x80000000);
62be1c4edfba remove parent from radix tree node to add skip field
Igor Sysoev <igor@sysoev.ru>
parents: 2366
diff changeset
182 }
62be1c4edfba remove parent from radix tree node to add skip field
Igor Sysoev <igor@sysoev.ru>
parents: 2366
diff changeset
183
62be1c4edfba remove parent from radix tree node to add skip field
Igor Sysoev <igor@sysoev.ru>
parents: 2366
diff changeset
184
62be1c4edfba remove parent from radix tree node to add skip field
Igor Sysoev <igor@sysoev.ru>
parents: 2366
diff changeset
185 static ngx_int_t
62be1c4edfba remove parent from radix tree node to add skip field
Igor Sysoev <igor@sysoev.ru>
parents: 2366
diff changeset
186 ngx_radix32tree_delete_node(ngx_radix_tree_t *tree, uint32_t key, uint32_t mask,
62be1c4edfba remove parent from radix tree node to add skip field
Igor Sysoev <igor@sysoev.ru>
parents: 2366
diff changeset
187 ngx_radix_node_t **pnode, uint32_t bit)
62be1c4edfba remove parent from radix tree node to add skip field
Igor Sysoev <igor@sysoev.ru>
parents: 2366
diff changeset
188 {
342
0ee0642af5f1 nginx-0.0.3-2004-05-26-23:33:53 import
Igor Sysoev <igor@sysoev.ru>
parents: 341
diff changeset
189 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
190
2368
62be1c4edfba remove parent from radix tree node to add skip field
Igor Sysoev <igor@sysoev.ru>
parents: 2366
diff changeset
191 node = *pnode;
340
0bf903191ceb nginx-0.0.3-2004-05-25-19:28:46 import
Igor Sysoev <igor@sysoev.ru>
parents:
diff changeset
192
342
0ee0642af5f1 nginx-0.0.3-2004-05-26-23:33:53 import
Igor Sysoev <igor@sysoev.ru>
parents: 341
diff changeset
193 if (node == NULL) {
0ee0642af5f1 nginx-0.0.3-2004-05-26-23:33:53 import
Igor Sysoev <igor@sysoev.ru>
parents: 341
diff changeset
194 return NGX_ERROR;
0ee0642af5f1 nginx-0.0.3-2004-05-26-23:33:53 import
Igor Sysoev <igor@sysoev.ru>
parents: 341
diff changeset
195 }
340
0bf903191ceb nginx-0.0.3-2004-05-25-19:28:46 import
Igor Sysoev <igor@sysoev.ru>
parents:
diff changeset
196
2368
62be1c4edfba remove parent from radix tree node to add skip field
Igor Sysoev <igor@sysoev.ru>
parents: 2366
diff changeset
197 if ((bit & mask) == 0) {
62be1c4edfba remove parent from radix tree node to add skip field
Igor Sysoev <igor@sysoev.ru>
parents: 2366
diff changeset
198
62be1c4edfba remove parent from radix tree node to add skip field
Igor Sysoev <igor@sysoev.ru>
parents: 2366
diff changeset
199 if (node->right || node->left) {
62be1c4edfba remove parent from radix tree node to add skip field
Igor Sysoev <igor@sysoev.ru>
parents: 2366
diff changeset
200
62be1c4edfba remove parent from radix tree node to add skip field
Igor Sysoev <igor@sysoev.ru>
parents: 2366
diff changeset
201 if (node->value != NGX_RADIX_NO_VALUE) {
62be1c4edfba remove parent from radix tree node to add skip field
Igor Sysoev <igor@sysoev.ru>
parents: 2366
diff changeset
202 node->value = NGX_RADIX_NO_VALUE;
62be1c4edfba remove parent from radix tree node to add skip field
Igor Sysoev <igor@sysoev.ru>
parents: 2366
diff changeset
203 return NGX_OK;
62be1c4edfba remove parent from radix tree node to add skip field
Igor Sysoev <igor@sysoev.ru>
parents: 2366
diff changeset
204 }
62be1c4edfba remove parent from radix tree node to add skip field
Igor Sysoev <igor@sysoev.ru>
parents: 2366
diff changeset
205
62be1c4edfba remove parent from radix tree node to add skip field
Igor Sysoev <igor@sysoev.ru>
parents: 2366
diff changeset
206 return NGX_ERROR;
62be1c4edfba remove parent from radix tree node to add skip field
Igor Sysoev <igor@sysoev.ru>
parents: 2366
diff changeset
207
62be1c4edfba remove parent from radix tree node to add skip field
Igor Sysoev <igor@sysoev.ru>
parents: 2366
diff changeset
208 } else {
62be1c4edfba remove parent from radix tree node to add skip field
Igor Sysoev <igor@sysoev.ru>
parents: 2366
diff changeset
209 node->right = tree->free;
62be1c4edfba remove parent from radix tree node to add skip field
Igor Sysoev <igor@sysoev.ru>
parents: 2366
diff changeset
210 tree->free = node;
2369
12e8e0045096 add radix tree skip node
Igor Sysoev <igor@sysoev.ru>
parents: 2368
diff changeset
211 tree->count--;
2368
62be1c4edfba remove parent from radix tree node to add skip field
Igor Sysoev <igor@sysoev.ru>
parents: 2366
diff changeset
212
62be1c4edfba remove parent from radix tree node to add skip field
Igor Sysoev <igor@sysoev.ru>
parents: 2366
diff changeset
213 *pnode = NULL;
485
4ebe09b07e30 nginx-0.1.17-RELEASE import
Igor Sysoev <igor@sysoev.ru>
parents: 444
diff changeset
214 }
4ebe09b07e30 nginx-0.1.17-RELEASE import
Igor Sysoev <igor@sysoev.ru>
parents: 444
diff changeset
215
2368
62be1c4edfba remove parent from radix tree node to add skip field
Igor Sysoev <igor@sysoev.ru>
parents: 2366
diff changeset
216 return NGX_OK;
62be1c4edfba remove parent from radix tree node to add skip field
Igor Sysoev <igor@sysoev.ru>
parents: 2366
diff changeset
217 }
62be1c4edfba remove parent from radix tree node to add skip field
Igor Sysoev <igor@sysoev.ru>
parents: 2366
diff changeset
218
62be1c4edfba remove parent from radix tree node to add skip field
Igor Sysoev <igor@sysoev.ru>
parents: 2366
diff changeset
219 if (ngx_radix32tree_delete_node(tree, key, mask,
62be1c4edfba remove parent from radix tree node to add skip field
Igor Sysoev <igor@sysoev.ru>
parents: 2366
diff changeset
220 (key & bit) ? &node->right : &node->left,
62be1c4edfba remove parent from radix tree node to add skip field
Igor Sysoev <igor@sysoev.ru>
parents: 2366
diff changeset
221 bit >> 1)
62be1c4edfba remove parent from radix tree node to add skip field
Igor Sysoev <igor@sysoev.ru>
parents: 2366
diff changeset
222 != NGX_OK)
62be1c4edfba remove parent from radix tree node to add skip field
Igor Sysoev <igor@sysoev.ru>
parents: 2366
diff changeset
223 {
485
4ebe09b07e30 nginx-0.1.17-RELEASE import
Igor Sysoev <igor@sysoev.ru>
parents: 444
diff changeset
224 return NGX_ERROR;
340
0bf903191ceb nginx-0.0.3-2004-05-25-19:28:46 import
Igor Sysoev <igor@sysoev.ru>
parents:
diff changeset
225 }
0bf903191ceb nginx-0.0.3-2004-05-25-19:28:46 import
Igor Sysoev <igor@sysoev.ru>
parents:
diff changeset
226
2368
62be1c4edfba remove parent from radix tree node to add skip field
Igor Sysoev <igor@sysoev.ru>
parents: 2366
diff changeset
227 if (node->right || node->left) {
62be1c4edfba remove parent from radix tree node to add skip field
Igor Sysoev <igor@sysoev.ru>
parents: 2366
diff changeset
228 return NGX_OK;
62be1c4edfba remove parent from radix tree node to add skip field
Igor Sysoev <igor@sysoev.ru>
parents: 2366
diff changeset
229 }
342
0ee0642af5f1 nginx-0.0.3-2004-05-26-23:33:53 import
Igor Sysoev <igor@sysoev.ru>
parents: 341
diff changeset
230
2368
62be1c4edfba remove parent from radix tree node to add skip field
Igor Sysoev <igor@sysoev.ru>
parents: 2366
diff changeset
231 if (node->value != NGX_RADIX_NO_VALUE) {
62be1c4edfba remove parent from radix tree node to add skip field
Igor Sysoev <igor@sysoev.ru>
parents: 2366
diff changeset
232 return NGX_OK;
62be1c4edfba remove parent from radix tree node to add skip field
Igor Sysoev <igor@sysoev.ru>
parents: 2366
diff changeset
233 }
563
9c2f3ed7a247 nginx-0.3.3-RELEASE import
Igor Sysoev <igor@sysoev.ru>
parents: 501
diff changeset
234
2368
62be1c4edfba remove parent from radix tree node to add skip field
Igor Sysoev <igor@sysoev.ru>
parents: 2366
diff changeset
235 node->right = tree->free;
62be1c4edfba remove parent from radix tree node to add skip field
Igor Sysoev <igor@sysoev.ru>
parents: 2366
diff changeset
236 tree->free = node;
2369
12e8e0045096 add radix tree skip node
Igor Sysoev <igor@sysoev.ru>
parents: 2368
diff changeset
237 tree->count--;
563
9c2f3ed7a247 nginx-0.3.3-RELEASE import
Igor Sysoev <igor@sysoev.ru>
parents: 501
diff changeset
238
2368
62be1c4edfba remove parent from radix tree node to add skip field
Igor Sysoev <igor@sysoev.ru>
parents: 2366
diff changeset
239 *pnode = NULL;
340
0bf903191ceb nginx-0.0.3-2004-05-25-19:28:46 import
Igor Sysoev <igor@sysoev.ru>
parents:
diff changeset
240
0bf903191ceb nginx-0.0.3-2004-05-25-19:28:46 import
Igor Sysoev <igor@sysoev.ru>
parents:
diff changeset
241 return NGX_OK;
0bf903191ceb nginx-0.0.3-2004-05-25-19:28:46 import
Igor Sysoev <igor@sysoev.ru>
parents:
diff changeset
242 }
0bf903191ceb nginx-0.0.3-2004-05-25-19:28:46 import
Igor Sysoev <igor@sysoev.ru>
parents:
diff changeset
243
0bf903191ceb nginx-0.0.3-2004-05-25-19:28:46 import
Igor Sysoev <igor@sysoev.ru>
parents:
diff changeset
244
2369
12e8e0045096 add radix tree skip node
Igor Sysoev <igor@sysoev.ru>
parents: 2368
diff changeset
245 void
12e8e0045096 add radix tree skip node
Igor Sysoev <igor@sysoev.ru>
parents: 2368
diff changeset
246 ngx_radix32tree_compress(ngx_radix_tree_t *tree)
12e8e0045096 add radix tree skip node
Igor Sysoev <igor@sysoev.ru>
parents: 2368
diff changeset
247 {
12e8e0045096 add radix tree skip node
Igor Sysoev <igor@sysoev.ru>
parents: 2368
diff changeset
248 if (tree->root) {
12e8e0045096 add radix tree skip node
Igor Sysoev <igor@sysoev.ru>
parents: 2368
diff changeset
249 ngx_radix32tree_compress_node(tree, tree->root);
12e8e0045096 add radix tree skip node
Igor Sysoev <igor@sysoev.ru>
parents: 2368
diff changeset
250 }
12e8e0045096 add radix tree skip node
Igor Sysoev <igor@sysoev.ru>
parents: 2368
diff changeset
251 }
12e8e0045096 add radix tree skip node
Igor Sysoev <igor@sysoev.ru>
parents: 2368
diff changeset
252
12e8e0045096 add radix tree skip node
Igor Sysoev <igor@sysoev.ru>
parents: 2368
diff changeset
253
12e8e0045096 add radix tree skip node
Igor Sysoev <igor@sysoev.ru>
parents: 2368
diff changeset
254 void
12e8e0045096 add radix tree skip node
Igor Sysoev <igor@sysoev.ru>
parents: 2368
diff changeset
255 ngx_radix32tree_compress_node(ngx_radix_tree_t *tree, ngx_radix_node_t *node)
12e8e0045096 add radix tree skip node
Igor Sysoev <igor@sysoev.ru>
parents: 2368
diff changeset
256 {
12e8e0045096 add radix tree skip node
Igor Sysoev <igor@sysoev.ru>
parents: 2368
diff changeset
257 uintptr_t skip;
12e8e0045096 add radix tree skip node
Igor Sysoev <igor@sysoev.ru>
parents: 2368
diff changeset
258 ngx_radix_node_t *n;
12e8e0045096 add radix tree skip node
Igor Sysoev <igor@sysoev.ru>
parents: 2368
diff changeset
259
12e8e0045096 add radix tree skip node
Igor Sysoev <igor@sysoev.ru>
parents: 2368
diff changeset
260 if (node->right) {
12e8e0045096 add radix tree skip node
Igor Sysoev <igor@sysoev.ru>
parents: 2368
diff changeset
261
12e8e0045096 add radix tree skip node
Igor Sysoev <igor@sysoev.ru>
parents: 2368
diff changeset
262 skip = 0;
12e8e0045096 add radix tree skip node
Igor Sysoev <igor@sysoev.ru>
parents: 2368
diff changeset
263
12e8e0045096 add radix tree skip node
Igor Sysoev <igor@sysoev.ru>
parents: 2368
diff changeset
264 for (n = node->right;
12e8e0045096 add radix tree skip node
Igor Sysoev <igor@sysoev.ru>
parents: 2368
diff changeset
265 n->right && n->left == NULL && n->value == NGX_RADIX_NO_VALUE;
12e8e0045096 add radix tree skip node
Igor Sysoev <igor@sysoev.ru>
parents: 2368
diff changeset
266 n = node->right)
12e8e0045096 add radix tree skip node
Igor Sysoev <igor@sysoev.ru>
parents: 2368
diff changeset
267 {
12e8e0045096 add radix tree skip node
Igor Sysoev <igor@sysoev.ru>
parents: 2368
diff changeset
268 node->right = n->right;
12e8e0045096 add radix tree skip node
Igor Sysoev <igor@sysoev.ru>
parents: 2368
diff changeset
269
12e8e0045096 add radix tree skip node
Igor Sysoev <igor@sysoev.ru>
parents: 2368
diff changeset
270 n->right = tree->free;
12e8e0045096 add radix tree skip node
Igor Sysoev <igor@sysoev.ru>
parents: 2368
diff changeset
271 tree->free = n;
12e8e0045096 add radix tree skip node
Igor Sysoev <igor@sysoev.ru>
parents: 2368
diff changeset
272 tree->count--;
12e8e0045096 add radix tree skip node
Igor Sysoev <igor@sysoev.ru>
parents: 2368
diff changeset
273
12e8e0045096 add radix tree skip node
Igor Sysoev <igor@sysoev.ru>
parents: 2368
diff changeset
274 skip++;
12e8e0045096 add radix tree skip node
Igor Sysoev <igor@sysoev.ru>
parents: 2368
diff changeset
275 }
12e8e0045096 add radix tree skip node
Igor Sysoev <igor@sysoev.ru>
parents: 2368
diff changeset
276
12e8e0045096 add radix tree skip node
Igor Sysoev <igor@sysoev.ru>
parents: 2368
diff changeset
277 node->right->skip = skip;
12e8e0045096 add radix tree skip node
Igor Sysoev <igor@sysoev.ru>
parents: 2368
diff changeset
278
12e8e0045096 add radix tree skip node
Igor Sysoev <igor@sysoev.ru>
parents: 2368
diff changeset
279 ngx_radix32tree_compress_node(tree, node->right);
12e8e0045096 add radix tree skip node
Igor Sysoev <igor@sysoev.ru>
parents: 2368
diff changeset
280 }
12e8e0045096 add radix tree skip node
Igor Sysoev <igor@sysoev.ru>
parents: 2368
diff changeset
281
12e8e0045096 add radix tree skip node
Igor Sysoev <igor@sysoev.ru>
parents: 2368
diff changeset
282 if (node->left) {
12e8e0045096 add radix tree skip node
Igor Sysoev <igor@sysoev.ru>
parents: 2368
diff changeset
283
12e8e0045096 add radix tree skip node
Igor Sysoev <igor@sysoev.ru>
parents: 2368
diff changeset
284 skip = 0;
12e8e0045096 add radix tree skip node
Igor Sysoev <igor@sysoev.ru>
parents: 2368
diff changeset
285
12e8e0045096 add radix tree skip node
Igor Sysoev <igor@sysoev.ru>
parents: 2368
diff changeset
286 for (n = node->left;
12e8e0045096 add radix tree skip node
Igor Sysoev <igor@sysoev.ru>
parents: 2368
diff changeset
287 n->left && n->right == NULL && n->value == NGX_RADIX_NO_VALUE;
12e8e0045096 add radix tree skip node
Igor Sysoev <igor@sysoev.ru>
parents: 2368
diff changeset
288 n = node->left)
12e8e0045096 add radix tree skip node
Igor Sysoev <igor@sysoev.ru>
parents: 2368
diff changeset
289 {
12e8e0045096 add radix tree skip node
Igor Sysoev <igor@sysoev.ru>
parents: 2368
diff changeset
290 node->left = n->left;
12e8e0045096 add radix tree skip node
Igor Sysoev <igor@sysoev.ru>
parents: 2368
diff changeset
291
12e8e0045096 add radix tree skip node
Igor Sysoev <igor@sysoev.ru>
parents: 2368
diff changeset
292 n->right = tree->free;
12e8e0045096 add radix tree skip node
Igor Sysoev <igor@sysoev.ru>
parents: 2368
diff changeset
293 tree->free = n;
12e8e0045096 add radix tree skip node
Igor Sysoev <igor@sysoev.ru>
parents: 2368
diff changeset
294 tree->count--;
12e8e0045096 add radix tree skip node
Igor Sysoev <igor@sysoev.ru>
parents: 2368
diff changeset
295
12e8e0045096 add radix tree skip node
Igor Sysoev <igor@sysoev.ru>
parents: 2368
diff changeset
296 skip++;
12e8e0045096 add radix tree skip node
Igor Sysoev <igor@sysoev.ru>
parents: 2368
diff changeset
297 }
12e8e0045096 add radix tree skip node
Igor Sysoev <igor@sysoev.ru>
parents: 2368
diff changeset
298
12e8e0045096 add radix tree skip node
Igor Sysoev <igor@sysoev.ru>
parents: 2368
diff changeset
299 node->left->skip = skip;
12e8e0045096 add radix tree skip node
Igor Sysoev <igor@sysoev.ru>
parents: 2368
diff changeset
300
12e8e0045096 add radix tree skip node
Igor Sysoev <igor@sysoev.ru>
parents: 2368
diff changeset
301 ngx_radix32tree_compress_node(tree, node->left);
12e8e0045096 add radix tree skip node
Igor Sysoev <igor@sysoev.ru>
parents: 2368
diff changeset
302 }
12e8e0045096 add radix tree skip node
Igor Sysoev <igor@sysoev.ru>
parents: 2368
diff changeset
303 }
12e8e0045096 add radix tree skip node
Igor Sysoev <igor@sysoev.ru>
parents: 2368
diff changeset
304
12e8e0045096 add radix tree skip node
Igor Sysoev <igor@sysoev.ru>
parents: 2368
diff changeset
305
487
31ff3e943e16 nginx-0.1.18-RELEASE import
Igor Sysoev <igor@sysoev.ru>
parents: 485
diff changeset
306 uintptr_t
31ff3e943e16 nginx-0.1.18-RELEASE import
Igor Sysoev <igor@sysoev.ru>
parents: 485
diff changeset
307 ngx_radix32tree_find(ngx_radix_tree_t *tree, uint32_t key)
340
0bf903191ceb nginx-0.0.3-2004-05-25-19:28:46 import
Igor Sysoev <igor@sysoev.ru>
parents:
diff changeset
308 {
2369
12e8e0045096 add radix tree skip node
Igor Sysoev <igor@sysoev.ru>
parents: 2368
diff changeset
309 uint32_t bit, test;
12e8e0045096 add radix tree skip node
Igor Sysoev <igor@sysoev.ru>
parents: 2368
diff changeset
310 uintptr_t value, skip;
340
0bf903191ceb nginx-0.0.3-2004-05-25-19:28:46 import
Igor Sysoev <igor@sysoev.ru>
parents:
diff changeset
311 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
312
485
4ebe09b07e30 nginx-0.1.17-RELEASE import
Igor Sysoev <igor@sysoev.ru>
parents: 444
diff changeset
313 value = NGX_RADIX_NO_VALUE;
340
0bf903191ceb nginx-0.0.3-2004-05-25-19:28:46 import
Igor Sysoev <igor@sysoev.ru>
parents:
diff changeset
314 node = tree->root;
0bf903191ceb nginx-0.0.3-2004-05-25-19:28:46 import
Igor Sysoev <igor@sysoev.ru>
parents:
diff changeset
315
2369
12e8e0045096 add radix tree skip node
Igor Sysoev <igor@sysoev.ru>
parents: 2368
diff changeset
316 if (node == NULL) {
12e8e0045096 add radix tree skip node
Igor Sysoev <igor@sysoev.ru>
parents: 2368
diff changeset
317 return NGX_RADIX_NO_VALUE;
12e8e0045096 add radix tree skip node
Igor Sysoev <igor@sysoev.ru>
parents: 2368
diff changeset
318 }
12e8e0045096 add radix tree skip node
Igor Sysoev <igor@sysoev.ru>
parents: 2368
diff changeset
319
12e8e0045096 add radix tree skip node
Igor Sysoev <igor@sysoev.ru>
parents: 2368
diff changeset
320 bit = 0x80000000;
12e8e0045096 add radix tree skip node
Igor Sysoev <igor@sysoev.ru>
parents: 2368
diff changeset
321
12e8e0045096 add radix tree skip node
Igor Sysoev <igor@sysoev.ru>
parents: 2368
diff changeset
322 for ( ;; ) {
12e8e0045096 add radix tree skip node
Igor Sysoev <igor@sysoev.ru>
parents: 2368
diff changeset
323
485
4ebe09b07e30 nginx-0.1.17-RELEASE import
Igor Sysoev <igor@sysoev.ru>
parents: 444
diff changeset
324 if (node->value != NGX_RADIX_NO_VALUE) {
340
0bf903191ceb nginx-0.0.3-2004-05-25-19:28:46 import
Igor Sysoev <igor@sysoev.ru>
parents:
diff changeset
325 value = node->value;
0bf903191ceb nginx-0.0.3-2004-05-25-19:28:46 import
Igor Sysoev <igor@sysoev.ru>
parents:
diff changeset
326 }
0bf903191ceb nginx-0.0.3-2004-05-25-19:28:46 import
Igor Sysoev <igor@sysoev.ru>
parents:
diff changeset
327
0bf903191ceb nginx-0.0.3-2004-05-25-19:28:46 import
Igor Sysoev <igor@sysoev.ru>
parents:
diff changeset
328 if (key & bit) {
0bf903191ceb nginx-0.0.3-2004-05-25-19:28:46 import
Igor Sysoev <igor@sysoev.ru>
parents:
diff changeset
329 node = node->right;
2369
12e8e0045096 add radix tree skip node
Igor Sysoev <igor@sysoev.ru>
parents: 2368
diff changeset
330 test = 0;
340
0bf903191ceb nginx-0.0.3-2004-05-25-19:28:46 import
Igor Sysoev <igor@sysoev.ru>
parents:
diff changeset
331
0bf903191ceb nginx-0.0.3-2004-05-25-19:28:46 import
Igor Sysoev <igor@sysoev.ru>
parents:
diff changeset
332 } else {
0bf903191ceb nginx-0.0.3-2004-05-25-19:28:46 import
Igor Sysoev <igor@sysoev.ru>
parents:
diff changeset
333 node = node->left;
2369
12e8e0045096 add radix tree skip node
Igor Sysoev <igor@sysoev.ru>
parents: 2368
diff changeset
334 test = bit >> 1;
12e8e0045096 add radix tree skip node
Igor Sysoev <igor@sysoev.ru>
parents: 2368
diff changeset
335 }
12e8e0045096 add radix tree skip node
Igor Sysoev <igor@sysoev.ru>
parents: 2368
diff changeset
336
12e8e0045096 add radix tree skip node
Igor Sysoev <igor@sysoev.ru>
parents: 2368
diff changeset
337 if (node == NULL) {
12e8e0045096 add radix tree skip node
Igor Sysoev <igor@sysoev.ru>
parents: 2368
diff changeset
338 return value;
340
0bf903191ceb nginx-0.0.3-2004-05-25-19:28:46 import
Igor Sysoev <igor@sysoev.ru>
parents:
diff changeset
339 }
0bf903191ceb nginx-0.0.3-2004-05-25-19:28:46 import
Igor Sysoev <igor@sysoev.ru>
parents:
diff changeset
340
0bf903191ceb nginx-0.0.3-2004-05-25-19:28:46 import
Igor Sysoev <igor@sysoev.ru>
parents:
diff changeset
341 bit >>= 1;
2369
12e8e0045096 add radix tree skip node
Igor Sysoev <igor@sysoev.ru>
parents: 2368
diff changeset
342
12e8e0045096 add radix tree skip node
Igor Sysoev <igor@sysoev.ru>
parents: 2368
diff changeset
343 for (skip = node->skip; skip; skip--) {
340
0bf903191ceb nginx-0.0.3-2004-05-25-19:28:46 import
Igor Sysoev <igor@sysoev.ru>
parents:
diff changeset
344
2369
12e8e0045096 add radix tree skip node
Igor Sysoev <igor@sysoev.ru>
parents: 2368
diff changeset
345 if ((key & bit) == test) {
12e8e0045096 add radix tree skip node
Igor Sysoev <igor@sysoev.ru>
parents: 2368
diff changeset
346 return value;
12e8e0045096 add radix tree skip node
Igor Sysoev <igor@sysoev.ru>
parents: 2368
diff changeset
347 }
12e8e0045096 add radix tree skip node
Igor Sysoev <igor@sysoev.ru>
parents: 2368
diff changeset
348
12e8e0045096 add radix tree skip node
Igor Sysoev <igor@sysoev.ru>
parents: 2368
diff changeset
349 bit >>= 1;
12e8e0045096 add radix tree skip node
Igor Sysoev <igor@sysoev.ru>
parents: 2368
diff changeset
350 test >>= 1;
12e8e0045096 add radix tree skip node
Igor Sysoev <igor@sysoev.ru>
parents: 2368
diff changeset
351 }
12e8e0045096 add radix tree skip node
Igor Sysoev <igor@sysoev.ru>
parents: 2368
diff changeset
352 }
340
0bf903191ceb nginx-0.0.3-2004-05-25-19:28:46 import
Igor Sysoev <igor@sysoev.ru>
parents:
diff changeset
353 }
0bf903191ceb nginx-0.0.3-2004-05-25-19:28:46 import
Igor Sysoev <igor@sysoev.ru>
parents:
diff changeset
354
0bf903191ceb nginx-0.0.3-2004-05-25-19:28:46 import
Igor Sysoev <igor@sysoev.ru>
parents:
diff changeset
355
487
31ff3e943e16 nginx-0.1.18-RELEASE import
Igor Sysoev <igor@sysoev.ru>
parents: 485
diff changeset
356 static void *
31ff3e943e16 nginx-0.1.18-RELEASE import
Igor Sysoev <igor@sysoev.ru>
parents: 485
diff changeset
357 ngx_radix_alloc(ngx_radix_tree_t *tree)
340
0bf903191ceb nginx-0.0.3-2004-05-25-19:28:46 import
Igor Sysoev <igor@sysoev.ru>
parents:
diff changeset
358 {
0bf903191ceb nginx-0.0.3-2004-05-25-19:28:46 import
Igor Sysoev <igor@sysoev.ru>
parents:
diff changeset
359 char *p;
0bf903191ceb nginx-0.0.3-2004-05-25-19:28:46 import
Igor Sysoev <igor@sysoev.ru>
parents:
diff changeset
360
341
41e552841296 nginx-0.0.3-2004-05-26-19:30:12 import
Igor Sysoev <igor@sysoev.ru>
parents: 340
diff changeset
361 if (tree->free) {
41e552841296 nginx-0.0.3-2004-05-26-19:30:12 import
Igor Sysoev <igor@sysoev.ru>
parents: 340
diff changeset
362 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
363 tree->free = tree->free->right;
2369
12e8e0045096 add radix tree skip node
Igor Sysoev <igor@sysoev.ru>
parents: 2368
diff changeset
364 tree->count++;
341
41e552841296 nginx-0.0.3-2004-05-26-19:30:12 import
Igor Sysoev <igor@sysoev.ru>
parents: 340
diff changeset
365 return p;
41e552841296 nginx-0.0.3-2004-05-26-19:30:12 import
Igor Sysoev <igor@sysoev.ru>
parents: 340
diff changeset
366 }
41e552841296 nginx-0.0.3-2004-05-26-19:30:12 import
Igor Sysoev <igor@sysoev.ru>
parents: 340
diff changeset
367
485
4ebe09b07e30 nginx-0.1.17-RELEASE import
Igor Sysoev <igor@sysoev.ru>
parents: 444
diff changeset
368 if (tree->size < sizeof(ngx_radix_node_t)) {
2221
78415b0469bc use ngx_pmemalign() to allocate radix pages
Igor Sysoev <igor@sysoev.ru>
parents: 1130
diff changeset
369 tree->start = ngx_pmemalign(tree->pool, ngx_pagesize, ngx_pagesize);
501
d4ea69372b94 nginx-0.1.25-RELEASE import
Igor Sysoev <igor@sysoev.ru>
parents: 499
diff changeset
370 if (tree->start == NULL) {
340
0bf903191ceb nginx-0.0.3-2004-05-25-19:28:46 import
Igor Sysoev <igor@sysoev.ru>
parents:
diff changeset
371 return NULL;
0bf903191ceb nginx-0.0.3-2004-05-25-19:28:46 import
Igor Sysoev <igor@sysoev.ru>
parents:
diff changeset
372 }
0bf903191ceb nginx-0.0.3-2004-05-25-19:28:46 import
Igor Sysoev <igor@sysoev.ru>
parents:
diff changeset
373
351
af4c6b45a687 nginx-0.0.4-2004-06-10-22:36:57 import
Igor Sysoev <igor@sysoev.ru>
parents: 342
diff changeset
374 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
375 }
0bf903191ceb nginx-0.0.3-2004-05-25-19:28:46 import
Igor Sysoev <igor@sysoev.ru>
parents:
diff changeset
376
341
41e552841296 nginx-0.0.3-2004-05-26-19:30:12 import
Igor Sysoev <igor@sysoev.ru>
parents: 340
diff changeset
377 p = tree->start;
485
4ebe09b07e30 nginx-0.1.17-RELEASE import
Igor Sysoev <igor@sysoev.ru>
parents: 444
diff changeset
378 tree->start += sizeof(ngx_radix_node_t);
4ebe09b07e30 nginx-0.1.17-RELEASE import
Igor Sysoev <igor@sysoev.ru>
parents: 444
diff changeset
379 tree->size -= sizeof(ngx_radix_node_t);
2369
12e8e0045096 add radix tree skip node
Igor Sysoev <igor@sysoev.ru>
parents: 2368
diff changeset
380 tree->count++;
340
0bf903191ceb nginx-0.0.3-2004-05-25-19:28:46 import
Igor Sysoev <igor@sysoev.ru>
parents:
diff changeset
381
0bf903191ceb nginx-0.0.3-2004-05-25-19:28:46 import
Igor Sysoev <igor@sysoev.ru>
parents:
diff changeset
382 return p;
0bf903191ceb nginx-0.0.3-2004-05-25-19:28:46 import
Igor Sysoev <igor@sysoev.ru>
parents:
diff changeset
383 }