Mercurial > hg > nginx-quic
annotate src/core/ngx_rbtree.h @ 5746:35990c69b3ac
Upstream: p->downstream_error instead of closing connection.
Previously, nginx closed client connection in cases when a response body
from upstream was needed to be cached or stored but shouldn't be sent to
the client. While this is normal for HTTP, it is unacceptable for SPDY.
Fix is to use instead the p->downstream_error flag to prevent nginx from
sending anything downstream. To make this work, the event pipe code was
modified to properly cache empty responses with the flag set.
author | Maxim Dounin <mdounin@mdounin.ru> |
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date | Fri, 04 Jul 2014 20:47:16 +0400 |
parents | d620f497c50f |
children | 1f513d7f1b45 |
rev | line source |
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2 /* |
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3 * Copyright (C) Igor Sysoev |
4412 | 4 * Copyright (C) Nginx, Inc. |
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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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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 | |
559 | 51 void ngx_rbtree_insert(ngx_thread_volatile ngx_rbtree_t *tree, |
52 ngx_rbtree_node_t *node); | |
53 void ngx_rbtree_delete(ngx_thread_volatile ngx_rbtree_t *tree, | |
54 ngx_rbtree_node_t *node); | |
861 | 55 void ngx_rbtree_insert_value(ngx_rbtree_node_t *root, ngx_rbtree_node_t *node, |
56 ngx_rbtree_node_t *sentinel); | |
853 | 57 void ngx_rbtree_insert_timer_value(ngx_rbtree_node_t *root, |
58 ngx_rbtree_node_t *node, ngx_rbtree_node_t *sentinel); | |
559 | 59 |
60 | |
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61 #define ngx_rbt_red(node) ((node)->color = 1) |
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62 #define ngx_rbt_black(node) ((node)->color = 0) |
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63 #define ngx_rbt_is_red(node) ((node)->color) |
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64 #define ngx_rbt_is_black(node) (!ngx_rbt_is_red(node)) |
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65 #define ngx_rbt_copy_color(n1, n2) (n1->color = n2->color) |
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66 |
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965 | 68 /* a sentinel must be black */ |
69 | |
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70 #define ngx_rbtree_sentinel_init(node) ngx_rbt_black(node) |
965 | 71 |
72 | |
559 | 73 static ngx_inline ngx_rbtree_node_t * |
74 ngx_rbtree_min(ngx_rbtree_node_t *node, ngx_rbtree_node_t *sentinel) | |
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75 { |
557 | 76 while (node->left != sentinel) { |
77 node = node->left; | |
78 } | |
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557 | 80 return node; |
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81 } |
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83 |
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84 #endif /* _NGX_RBTREE_H_INCLUDED_ */ |