Mercurial > hg > nginx-quic
annotate src/core/ngx_array.c @ 5114:a46c1cfe7263
Allow to reuse connections that wait their first request.
This should improve behavior under deficiency of connections.
Since SSL handshake usually takes significant amount of time,
we exclude connections from reusable queue during this period
to avoid premature flush of them.
author | Valentin Bartenev <vbart@nginx.com> |
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date | Fri, 15 Mar 2013 19:49:54 +0000 |
parents | d620f497c50f |
children | 4fef8ed52389 |
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 |
501 | 22 a->elts = ngx_palloc(p, n * size); |
23 if (a->elts == NULL) { | |
485 | 24 return NULL; |
25 } | |
26 | |
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27 a->nelts = 0; |
485 | 28 a->size = size; |
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29 a->nalloc = n; |
485 | 30 a->pool = p; |
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31 |
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32 return a; |
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33 } |
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34 |
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35 |
605 | 36 void |
37 ngx_array_destroy(ngx_array_t *a) | |
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38 { |
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39 ngx_pool_t *p; |
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40 |
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41 p = a->pool; |
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42 |
2049 | 43 if ((u_char *) a->elts + a->size * a->nalloc == p->d.last) { |
44 p->d.last -= a->size * a->nalloc; | |
44
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45 } |
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46 |
2049 | 47 if ((u_char *) a + sizeof(ngx_array_t) == p->d.last) { |
48 p->d.last = (u_char *) a; | |
44
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49 } |
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50 } |
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51 |
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52 |
605 | 53 void * |
54 ngx_array_push(ngx_array_t *a) | |
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55 { |
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56 void *elt, *new; |
485 | 57 size_t size; |
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58 ngx_pool_t *p; |
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59 |
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60 if (a->nelts == a->nalloc) { |
485 | 61 |
62 /* the array is full */ | |
63 | |
64 size = a->size * a->nalloc; | |
65 | |
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66 p = a->pool; |
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67 |
2049 | 68 if ((u_char *) a->elts + size == p->d.last |
69 && p->d.last + a->size <= p->d.end) | |
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70 { |
485 | 71 /* |
72 * the array allocation is the last in the pool | |
73 * and there is space for new allocation | |
74 */ | |
75 | |
2049 | 76 p->d.last += a->size; |
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77 a->nalloc++; |
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78 |
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79 } else { |
485 | 80 /* allocate a new array */ |
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81 |
501 | 82 new = ngx_palloc(p, 2 * size); |
83 if (new == NULL) { | |
485 | 84 return NULL; |
85 } | |
86 | |
87 ngx_memcpy(new, a->elts, size); | |
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88 a->elts = new; |
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89 a->nalloc *= 2; |
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90 } |
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91 } |
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92 |
485 | 93 elt = (u_char *) a->elts + a->size * a->nelts; |
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94 a->nelts++; |
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95 |
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96 return elt; |
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97 } |
485 | 98 |
99 | |
605 | 100 void * |
101 ngx_array_push_n(ngx_array_t *a, ngx_uint_t n) | |
485 | 102 { |
103 void *elt, *new; | |
104 size_t size; | |
105 ngx_uint_t nalloc; | |
106 ngx_pool_t *p; | |
107 | |
108 size = n * a->size; | |
109 | |
110 if (a->nelts + n > a->nalloc) { | |
111 | |
112 /* the array is full */ | |
113 | |
114 p = a->pool; | |
115 | |
2049 | 116 if ((u_char *) a->elts + a->size * a->nalloc == p->d.last |
117 && p->d.last + size <= p->d.end) | |
485 | 118 { |
119 /* | |
120 * the array allocation is the last in the pool | |
121 * and there is space for new allocation | |
122 */ | |
123 | |
2049 | 124 p->d.last += size; |
485 | 125 a->nalloc += n; |
126 | |
127 } else { | |
128 /* allocate a new array */ | |
129 | |
130 nalloc = 2 * ((n >= a->nalloc) ? n : a->nalloc); | |
131 | |
501 | 132 new = ngx_palloc(p, nalloc * a->size); |
133 if (new == NULL) { | |
485 | 134 return NULL; |
135 } | |
136 | |
137 ngx_memcpy(new, a->elts, a->nelts * a->size); | |
138 a->elts = new; | |
139 a->nalloc = nalloc; | |
140 } | |
141 } | |
142 | |
143 elt = (u_char *) a->elts + a->size * a->nelts; | |
144 a->nelts += n; | |
145 | |
146 return elt; | |
147 } |