Mercurial > hg > nginx
annotate src/core/ngx_rbtree.h @ 6791:cb4a4e9bba8e
Perl: fixed optimization in SSI command handler.
As the pointer to the first argument was tested instead of the argument
itself, array of arguments was always created, even if there were no
arguments. Fix is to test args[0] instead of args.
Found by Coverity (CID 1356862).
author | Maxim Dounin <mdounin@mdounin.ru> |
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date | Tue, 01 Nov 2016 20:39:21 +0300 |
parents | 1f513d7f1b45 |
children | e0cc454aafe4 |
rev | line source |
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441
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1 |
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2 /* |
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3 * Copyright (C) Igor Sysoev |
4412 | 4 * Copyright (C) Nginx, Inc. |
441
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5 */ |
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8 #ifndef _NGX_RBTREE_H_INCLUDED_ |
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9 #define _NGX_RBTREE_H_INCLUDED_ |
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12 #include <ngx_config.h> |
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13 #include <ngx_core.h> |
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15 |
557 | 16 typedef ngx_uint_t ngx_rbtree_key_t; |
17 typedef ngx_int_t ngx_rbtree_key_int_t; | |
18 | |
19 | |
559 | 20 typedef struct ngx_rbtree_node_s ngx_rbtree_node_t; |
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21 |
559 | 22 struct ngx_rbtree_node_s { |
23 ngx_rbtree_key_t key; | |
24 ngx_rbtree_node_t *left; | |
25 ngx_rbtree_node_t *right; | |
26 ngx_rbtree_node_t *parent; | |
853 | 27 u_char color; |
28 u_char data; | |
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29 }; |
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31 |
559 | 32 typedef struct ngx_rbtree_s ngx_rbtree_t; |
33 | |
853 | 34 typedef void (*ngx_rbtree_insert_pt) (ngx_rbtree_node_t *root, |
559 | 35 ngx_rbtree_node_t *node, ngx_rbtree_node_t *sentinel); |
36 | |
37 struct ngx_rbtree_s { | |
38 ngx_rbtree_node_t *root; | |
39 ngx_rbtree_node_t *sentinel; | |
853 | 40 ngx_rbtree_insert_pt insert; |
559 | 41 }; |
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42 |
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43 |
1686 | 44 #define ngx_rbtree_init(tree, s, i) \ |
45 ngx_rbtree_sentinel_init(s); \ | |
46 (tree)->root = s; \ | |
47 (tree)->sentinel = s; \ | |
48 (tree)->insert = i | |
49 | |
50 | |
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51 void ngx_rbtree_insert(ngx_rbtree_t *tree, ngx_rbtree_node_t *node); |
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52 void ngx_rbtree_delete(ngx_rbtree_t *tree, ngx_rbtree_node_t *node); |
861 | 53 void ngx_rbtree_insert_value(ngx_rbtree_node_t *root, ngx_rbtree_node_t *node, |
54 ngx_rbtree_node_t *sentinel); | |
853 | 55 void ngx_rbtree_insert_timer_value(ngx_rbtree_node_t *root, |
56 ngx_rbtree_node_t *node, ngx_rbtree_node_t *sentinel); | |
559 | 57 |
58 | |
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59 #define ngx_rbt_red(node) ((node)->color = 1) |
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60 #define ngx_rbt_black(node) ((node)->color = 0) |
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61 #define ngx_rbt_is_red(node) ((node)->color) |
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62 #define ngx_rbt_is_black(node) (!ngx_rbt_is_red(node)) |
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63 #define ngx_rbt_copy_color(n1, n2) (n1->color = n2->color) |
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64 |
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65 |
965 | 66 /* a sentinel must be black */ |
67 | |
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68 #define ngx_rbtree_sentinel_init(node) ngx_rbt_black(node) |
965 | 69 |
70 | |
559 | 71 static ngx_inline ngx_rbtree_node_t * |
72 ngx_rbtree_min(ngx_rbtree_node_t *node, ngx_rbtree_node_t *sentinel) | |
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73 { |
557 | 74 while (node->left != sentinel) { |
75 node = node->left; | |
76 } | |
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77 |
557 | 78 return node; |
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79 } |
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80 |
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81 |
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82 #endif /* _NGX_RBTREE_H_INCLUDED_ */ |