Mercurial > hg > nginx-quic
annotate src/core/ngx_radix_tree.c @ 340:0bf903191ceb
nginx-0.0.3-2004-05-25-19:28:46 import
author | Igor Sysoev <igor@sysoev.ru> |
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date | Tue, 25 May 2004 15:28:46 +0000 |
parents | |
children | 41e552841296 |
rev | line source |
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340
0bf903191ceb
nginx-0.0.3-2004-05-25-19:28:46 import
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1 |
0bf903191ceb
nginx-0.0.3-2004-05-25-19:28:46 import
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2 #include <ngx_config.h> |
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nginx-0.0.3-2004-05-25-19:28:46 import
Igor Sysoev <igor@sysoev.ru>
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3 #include <ngx_core.h> |
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nginx-0.0.3-2004-05-25-19:28:46 import
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4 |
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nginx-0.0.3-2004-05-25-19:28:46 import
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5 |
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nginx-0.0.3-2004-05-25-19:28:46 import
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6 /* STUB: page size */ |
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nginx-0.0.3-2004-05-25-19:28:46 import
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7 #define NGX_RADIX_TREE_POOL_SIZE 4096 |
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nginx-0.0.3-2004-05-25-19:28:46 import
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8 |
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nginx-0.0.3-2004-05-25-19:28:46 import
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9 |
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nginx-0.0.3-2004-05-25-19:28:46 import
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10 static void *ngx_radix_alloc(ngx_radix_tree_t *tree, size_t size); |
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nginx-0.0.3-2004-05-25-19:28:46 import
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11 |
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nginx-0.0.3-2004-05-25-19:28:46 import
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12 |
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nginx-0.0.3-2004-05-25-19:28:46 import
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13 ngx_radix_tree_t *ngx_radix_tree_create(ngx_pool_t *pool) |
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nginx-0.0.3-2004-05-25-19:28:46 import
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14 { |
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nginx-0.0.3-2004-05-25-19:28:46 import
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15 ngx_radix_tree_t *tree; |
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nginx-0.0.3-2004-05-25-19:28:46 import
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16 |
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nginx-0.0.3-2004-05-25-19:28:46 import
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17 if (!(tree = ngx_palloc(pool, sizeof(ngx_radix_tree_t)))) { |
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nginx-0.0.3-2004-05-25-19:28:46 import
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18 return NULL; |
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nginx-0.0.3-2004-05-25-19:28:46 import
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19 } |
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nginx-0.0.3-2004-05-25-19:28:46 import
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20 |
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nginx-0.0.3-2004-05-25-19:28:46 import
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21 tree->root = NULL; |
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nginx-0.0.3-2004-05-25-19:28:46 import
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22 tree->pool = pool; |
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nginx-0.0.3-2004-05-25-19:28:46 import
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23 tree->free = NULL; |
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nginx-0.0.3-2004-05-25-19:28:46 import
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24 tree->size = 0; |
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nginx-0.0.3-2004-05-25-19:28:46 import
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25 |
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nginx-0.0.3-2004-05-25-19:28:46 import
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26 return tree; |
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nginx-0.0.3-2004-05-25-19:28:46 import
Igor Sysoev <igor@sysoev.ru>
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27 } |
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nginx-0.0.3-2004-05-25-19:28:46 import
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28 |
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nginx-0.0.3-2004-05-25-19:28:46 import
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29 |
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nginx-0.0.3-2004-05-25-19:28:46 import
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30 ngx_int_t ngx_radix32tree_insert(ngx_radix_tree_t *tree, |
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nginx-0.0.3-2004-05-25-19:28:46 import
Igor Sysoev <igor@sysoev.ru>
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31 uint32_t key, uint32_t mask, uintptr_t value) |
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nginx-0.0.3-2004-05-25-19:28:46 import
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32 { |
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nginx-0.0.3-2004-05-25-19:28:46 import
Igor Sysoev <igor@sysoev.ru>
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33 uint32_t bit; |
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nginx-0.0.3-2004-05-25-19:28:46 import
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34 ngx_radix_node_t *node, *new; |
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nginx-0.0.3-2004-05-25-19:28:46 import
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35 |
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nginx-0.0.3-2004-05-25-19:28:46 import
Igor Sysoev <igor@sysoev.ru>
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36 bit = 0x80000000; |
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nginx-0.0.3-2004-05-25-19:28:46 import
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37 node = tree->root; |
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nginx-0.0.3-2004-05-25-19:28:46 import
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38 |
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nginx-0.0.3-2004-05-25-19:28:46 import
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39 while (node && (bit & mask)) { |
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nginx-0.0.3-2004-05-25-19:28:46 import
Igor Sysoev <igor@sysoev.ru>
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40 if (key & bit) { |
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nginx-0.0.3-2004-05-25-19:28:46 import
Igor Sysoev <igor@sysoev.ru>
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41 node = node->right; |
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nginx-0.0.3-2004-05-25-19:28:46 import
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42 |
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nginx-0.0.3-2004-05-25-19:28:46 import
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43 } else { |
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nginx-0.0.3-2004-05-25-19:28:46 import
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44 node = node->left; |
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nginx-0.0.3-2004-05-25-19:28:46 import
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45 } |
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nginx-0.0.3-2004-05-25-19:28:46 import
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46 |
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nginx-0.0.3-2004-05-25-19:28:46 import
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47 bit >>= 1; |
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nginx-0.0.3-2004-05-25-19:28:46 import
Igor Sysoev <igor@sysoev.ru>
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48 } |
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nginx-0.0.3-2004-05-25-19:28:46 import
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49 |
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nginx-0.0.3-2004-05-25-19:28:46 import
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50 if (node) { |
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nginx-0.0.3-2004-05-25-19:28:46 import
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51 if (node->value) { |
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nginx-0.0.3-2004-05-25-19:28:46 import
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52 return NGX_BUSY; |
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nginx-0.0.3-2004-05-25-19:28:46 import
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53 } |
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nginx-0.0.3-2004-05-25-19:28:46 import
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54 |
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nginx-0.0.3-2004-05-25-19:28:46 import
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55 node->value = value; |
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nginx-0.0.3-2004-05-25-19:28:46 import
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56 return NGX_OK; |
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nginx-0.0.3-2004-05-25-19:28:46 import
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57 } |
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nginx-0.0.3-2004-05-25-19:28:46 import
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58 |
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nginx-0.0.3-2004-05-25-19:28:46 import
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59 while (bit & mask) { |
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nginx-0.0.3-2004-05-25-19:28:46 import
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60 if (!(new = ngx_radix_alloc(tree, sizeof(ngx_radix_node_t)))) { |
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nginx-0.0.3-2004-05-25-19:28:46 import
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61 return NGX_ERROR; |
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nginx-0.0.3-2004-05-25-19:28:46 import
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62 } |
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nginx-0.0.3-2004-05-25-19:28:46 import
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63 |
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nginx-0.0.3-2004-05-25-19:28:46 import
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64 new->value = value; |
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nginx-0.0.3-2004-05-25-19:28:46 import
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65 |
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nginx-0.0.3-2004-05-25-19:28:46 import
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66 if (key & bit) { |
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nginx-0.0.3-2004-05-25-19:28:46 import
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67 node->right = new; |
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nginx-0.0.3-2004-05-25-19:28:46 import
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68 |
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69 } else { |
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nginx-0.0.3-2004-05-25-19:28:46 import
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70 node->left = new; |
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nginx-0.0.3-2004-05-25-19:28:46 import
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71 } |
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nginx-0.0.3-2004-05-25-19:28:46 import
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72 |
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nginx-0.0.3-2004-05-25-19:28:46 import
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73 bit >>= 1; |
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nginx-0.0.3-2004-05-25-19:28:46 import
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74 new = node; |
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nginx-0.0.3-2004-05-25-19:28:46 import
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75 } |
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76 |
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77 return NGX_OK; |
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nginx-0.0.3-2004-05-25-19:28:46 import
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78 } |
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nginx-0.0.3-2004-05-25-19:28:46 import
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79 |
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80 |
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nginx-0.0.3-2004-05-25-19:28:46 import
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81 void ngx_radix32tree_delete(ngx_radix_tree_t *tree, uint32_t key, uint32_t mask) |
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nginx-0.0.3-2004-05-25-19:28:46 import
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82 { |
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83 uint32_t bit; |
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84 ngx_radix_node_t *node; |
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85 |
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86 bit = 0x80000000; |
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nginx-0.0.3-2004-05-25-19:28:46 import
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87 node = tree->root; |
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88 |
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89 while (node && (bit & mask)) { |
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90 if (key & bit) { |
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91 node = node->right; |
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92 |
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nginx-0.0.3-2004-05-25-19:28:46 import
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93 } else { |
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nginx-0.0.3-2004-05-25-19:28:46 import
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94 node = node->left; |
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95 } |
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nginx-0.0.3-2004-05-25-19:28:46 import
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96 |
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nginx-0.0.3-2004-05-25-19:28:46 import
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97 bit >>= 1; |
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nginx-0.0.3-2004-05-25-19:28:46 import
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98 } |
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nginx-0.0.3-2004-05-25-19:28:46 import
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99 |
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nginx-0.0.3-2004-05-25-19:28:46 import
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100 if (node) { |
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nginx-0.0.3-2004-05-25-19:28:46 import
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101 node->value = (uintptr_t) 0; |
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nginx-0.0.3-2004-05-25-19:28:46 import
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102 } |
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nginx-0.0.3-2004-05-25-19:28:46 import
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103 } |
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nginx-0.0.3-2004-05-25-19:28:46 import
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104 |
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nginx-0.0.3-2004-05-25-19:28:46 import
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105 |
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nginx-0.0.3-2004-05-25-19:28:46 import
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106 uintptr_t ngx_radix32tree_find(ngx_radix_tree_t *tree, uint32_t key) |
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nginx-0.0.3-2004-05-25-19:28:46 import
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107 { |
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nginx-0.0.3-2004-05-25-19:28:46 import
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108 uint32_t bit; |
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nginx-0.0.3-2004-05-25-19:28:46 import
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109 uintptr_t value; |
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nginx-0.0.3-2004-05-25-19:28:46 import
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110 ngx_radix_node_t *node; |
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nginx-0.0.3-2004-05-25-19:28:46 import
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111 |
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nginx-0.0.3-2004-05-25-19:28:46 import
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112 bit = 0x80000000; |
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nginx-0.0.3-2004-05-25-19:28:46 import
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113 value = NULL; |
0bf903191ceb
nginx-0.0.3-2004-05-25-19:28:46 import
Igor Sysoev <igor@sysoev.ru>
parents:
diff
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114 node = tree->root; |
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
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116 while (node) { |
0bf903191ceb
nginx-0.0.3-2004-05-25-19:28:46 import
Igor Sysoev <igor@sysoev.ru>
parents:
diff
changeset
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117 if (node->value) { |
0bf903191ceb
nginx-0.0.3-2004-05-25-19:28:46 import
Igor Sysoev <igor@sysoev.ru>
parents:
diff
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118 value = node->value; |
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 |
0bf903191ceb
nginx-0.0.3-2004-05-25-19:28:46 import
Igor Sysoev <igor@sysoev.ru>
parents:
diff
changeset
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121 if (key & bit) { |
0bf903191ceb
nginx-0.0.3-2004-05-25-19:28:46 import
Igor Sysoev <igor@sysoev.ru>
parents:
diff
changeset
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122 node = node->right; |
0bf903191ceb
nginx-0.0.3-2004-05-25-19:28:46 import
Igor Sysoev <igor@sysoev.ru>
parents:
diff
changeset
|
123 |
0bf903191ceb
nginx-0.0.3-2004-05-25-19:28:46 import
Igor Sysoev <igor@sysoev.ru>
parents:
diff
changeset
|
124 } else { |
0bf903191ceb
nginx-0.0.3-2004-05-25-19:28:46 import
Igor Sysoev <igor@sysoev.ru>
parents:
diff
changeset
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125 node = node->left; |
0bf903191ceb
nginx-0.0.3-2004-05-25-19:28:46 import
Igor Sysoev <igor@sysoev.ru>
parents:
diff
changeset
|
126 } |
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
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128 bit >>= 1; |
0bf903191ceb
nginx-0.0.3-2004-05-25-19:28:46 import
Igor Sysoev <igor@sysoev.ru>
parents:
diff
changeset
|
129 } |
0bf903191ceb
nginx-0.0.3-2004-05-25-19:28:46 import
Igor Sysoev <igor@sysoev.ru>
parents:
diff
changeset
|
130 |
0bf903191ceb
nginx-0.0.3-2004-05-25-19:28:46 import
Igor Sysoev <igor@sysoev.ru>
parents:
diff
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|
131 return value; |
0bf903191ceb
nginx-0.0.3-2004-05-25-19:28:46 import
Igor Sysoev <igor@sysoev.ru>
parents:
diff
changeset
|
132 } |
0bf903191ceb
nginx-0.0.3-2004-05-25-19:28:46 import
Igor Sysoev <igor@sysoev.ru>
parents:
diff
changeset
|
133 |
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 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
|
136 { |
0bf903191ceb
nginx-0.0.3-2004-05-25-19:28:46 import
Igor Sysoev <igor@sysoev.ru>
parents:
diff
changeset
|
137 char *p; |
0bf903191ceb
nginx-0.0.3-2004-05-25-19:28:46 import
Igor Sysoev <igor@sysoev.ru>
parents:
diff
changeset
|
138 |
0bf903191ceb
nginx-0.0.3-2004-05-25-19:28:46 import
Igor Sysoev <igor@sysoev.ru>
parents:
diff
changeset
|
139 if (tree->size < size) { |
0bf903191ceb
nginx-0.0.3-2004-05-25-19:28:46 import
Igor Sysoev <igor@sysoev.ru>
parents:
diff
changeset
|
140 if (!(tree->free = ngx_palloc(tree->pool, 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
|
141 return NULL; |
0bf903191ceb
nginx-0.0.3-2004-05-25-19:28:46 import
Igor Sysoev <igor@sysoev.ru>
parents:
diff
changeset
|
142 } |
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 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
|
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 p = tree->free; |
0bf903191ceb
nginx-0.0.3-2004-05-25-19:28:46 import
Igor Sysoev <igor@sysoev.ru>
parents:
diff
changeset
|
148 tree->free += size; |
0bf903191ceb
nginx-0.0.3-2004-05-25-19:28:46 import
Igor Sysoev <igor@sysoev.ru>
parents:
diff
changeset
|
149 tree->size -= size; |
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 return p; |
0bf903191ceb
nginx-0.0.3-2004-05-25-19:28:46 import
Igor Sysoev <igor@sysoev.ru>
parents:
diff
changeset
|
152 } |