Mercurial > hg > nginx-quic
annotate src/core/ngx_array.c @ 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 | 4fef8ed52389 |
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rev | line source |
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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. |
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5 */ |
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8 #include <ngx_config.h> |
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9 #include <ngx_core.h> |
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11 |
605 | 12 ngx_array_t * |
13 ngx_array_create(ngx_pool_t *p, ngx_uint_t n, size_t size) | |
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14 { |
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15 ngx_array_t *a; |
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16 |
501 | 17 a = ngx_palloc(p, sizeof(ngx_array_t)); |
18 if (a == NULL) { | |
485 | 19 return NULL; |
20 } | |
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21 |
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22 if (ngx_array_init(a, p, n, size) != NGX_OK) { |
485 | 23 return NULL; |
24 } | |
25 | |
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26 return a; |
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27 } |
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29 |
605 | 30 void |
31 ngx_array_destroy(ngx_array_t *a) | |
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32 { |
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33 ngx_pool_t *p; |
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34 |
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35 p = a->pool; |
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36 |
2049 | 37 if ((u_char *) a->elts + a->size * a->nalloc == p->d.last) { |
38 p->d.last -= a->size * a->nalloc; | |
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39 } |
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40 |
2049 | 41 if ((u_char *) a + sizeof(ngx_array_t) == p->d.last) { |
42 p->d.last = (u_char *) a; | |
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43 } |
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44 } |
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45 |
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46 |
605 | 47 void * |
48 ngx_array_push(ngx_array_t *a) | |
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49 { |
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50 void *elt, *new; |
485 | 51 size_t size; |
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52 ngx_pool_t *p; |
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53 |
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54 if (a->nelts == a->nalloc) { |
485 | 55 |
56 /* the array is full */ | |
57 | |
58 size = a->size * a->nalloc; | |
59 | |
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60 p = a->pool; |
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61 |
2049 | 62 if ((u_char *) a->elts + size == p->d.last |
63 && p->d.last + a->size <= p->d.end) | |
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64 { |
485 | 65 /* |
66 * the array allocation is the last in the pool | |
67 * and there is space for new allocation | |
68 */ | |
69 | |
2049 | 70 p->d.last += a->size; |
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71 a->nalloc++; |
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72 |
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73 } else { |
485 | 74 /* allocate a new array */ |
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75 |
501 | 76 new = ngx_palloc(p, 2 * size); |
77 if (new == NULL) { | |
485 | 78 return NULL; |
79 } | |
80 | |
81 ngx_memcpy(new, a->elts, size); | |
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82 a->elts = new; |
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83 a->nalloc *= 2; |
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84 } |
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85 } |
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86 |
485 | 87 elt = (u_char *) a->elts + a->size * a->nelts; |
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88 a->nelts++; |
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89 |
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90 return elt; |
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91 } |
485 | 92 |
93 | |
605 | 94 void * |
95 ngx_array_push_n(ngx_array_t *a, ngx_uint_t n) | |
485 | 96 { |
97 void *elt, *new; | |
98 size_t size; | |
99 ngx_uint_t nalloc; | |
100 ngx_pool_t *p; | |
101 | |
102 size = n * a->size; | |
103 | |
104 if (a->nelts + n > a->nalloc) { | |
105 | |
106 /* the array is full */ | |
107 | |
108 p = a->pool; | |
109 | |
2049 | 110 if ((u_char *) a->elts + a->size * a->nalloc == p->d.last |
111 && p->d.last + size <= p->d.end) | |
485 | 112 { |
113 /* | |
114 * the array allocation is the last in the pool | |
115 * and there is space for new allocation | |
116 */ | |
117 | |
2049 | 118 p->d.last += size; |
485 | 119 a->nalloc += n; |
120 | |
121 } else { | |
122 /* allocate a new array */ | |
123 | |
124 nalloc = 2 * ((n >= a->nalloc) ? n : a->nalloc); | |
125 | |
501 | 126 new = ngx_palloc(p, nalloc * a->size); |
127 if (new == NULL) { | |
485 | 128 return NULL; |
129 } | |
130 | |
131 ngx_memcpy(new, a->elts, a->nelts * a->size); | |
132 a->elts = new; | |
133 a->nalloc = nalloc; | |
134 } | |
135 } | |
136 | |
137 elt = (u_char *) a->elts + a->size * a->nelts; | |
138 a->nelts += n; | |
139 | |
140 return elt; | |
141 } |