Mercurial > hg > nginx-quic
annotate src/core/ngx_palloc.c @ 607:77cdfe394a94 release-0.3.25
nginx-0.3.25-RELEASE import
*) Bugfix: the segmentation fault was occurred on start or while
reconfiguration if there was invalid configuration; the bug had
appeared in 0.3.24.
author | Igor Sysoev <igor@sysoev.ru> |
---|---|
date | Wed, 01 Feb 2006 20:01:51 +0000 |
parents | 5dac8c7fb71b |
children | 65bf042c0b4f |
rev | line source |
---|---|
441
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1 |
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2 /* |
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3 * Copyright (C) Igor Sysoev |
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4 */ |
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5 |
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6 |
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7 #include <ngx_config.h> |
100
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8 #include <ngx_core.h> |
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9 |
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10 |
501 | 11 ngx_pool_t * |
12 ngx_create_pool(size_t size, ngx_log_t *log) | |
0
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13 { |
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14 ngx_pool_t *p; |
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15 |
501 | 16 p = ngx_alloc(size, log); |
17 if (p == NULL) { | |
527 | 18 return NULL; |
194
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19 } |
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20 |
485 | 21 p->last = (u_char *) p + sizeof(ngx_pool_t); |
22 p->end = (u_char *) p + size; | |
581 | 23 p->current = p; |
24 p->chain = NULL; | |
0
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25 p->next = NULL; |
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26 p->large = NULL; |
509 | 27 p->cleanup = NULL; |
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28 p->log = log; |
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29 |
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30 return p; |
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31 } |
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32 |
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33 |
501 | 34 void |
35 ngx_destroy_pool(ngx_pool_t *pool) | |
0
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36 { |
509 | 37 ngx_pool_t *p, *n; |
38 ngx_pool_large_t *l; | |
39 ngx_pool_cleanup_t *c; | |
40 | |
41 for (c = pool->cleanup; c; c = c->next) { | |
42 if (c->handler) { | |
43 c->handler(c->data); | |
44 } | |
45 } | |
0
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46 |
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47 for (l = pool->large; l; l = l->next) { |
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48 |
461 | 49 ngx_log_debug1(NGX_LOG_DEBUG_ALLOC, pool->log, 0, "free: %p", l->alloc); |
257
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50 |
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51 if (l->alloc) { |
477 | 52 ngx_free(l->alloc); |
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53 } |
10
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54 } |
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55 |
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56 #if (NGX_DEBUG) |
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57 |
128
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58 /* |
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59 * we could allocate the pool->log from this pool |
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60 * so we can not use this log while the free()ing the pool |
128
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61 */ |
126
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62 |
128
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63 for (p = pool, n = pool->next; /* void */; p = n, n = n->next) { |
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64 ngx_log_debug2(NGX_LOG_DEBUG_ALLOC, pool->log, 0, |
461 | 65 "free: %p, unused: %uz", p, p->end - p->last); |
133
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66 |
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67 if (n == NULL) { |
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68 break; |
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69 } |
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70 } |
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71 |
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72 #endif |
128
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73 |
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74 for (p = pool, n = pool->next; /* void */; p = n, n = n->next) { |
477 | 75 ngx_free(p); |
128
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76 |
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77 if (n == NULL) { |
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78 break; |
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79 } |
126
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80 } |
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81 } |
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82 |
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83 |
501 | 84 void * |
85 ngx_palloc(ngx_pool_t *pool, size_t size) | |
0
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86 { |
485 | 87 u_char *m; |
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88 ngx_pool_t *p, *n; |
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89 ngx_pool_large_t *large, *last; |
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90 |
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91 if (size <= (size_t) NGX_MAX_ALLOC_FROM_POOL |
485 | 92 && size <= (size_t) (pool->end - (u_char *) pool) |
589 | 93 - (size_t) ngx_align_ptr(sizeof(ngx_pool_t), NGX_ALIGNMENT)) |
429
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94 { |
581 | 95 for (p = pool->current; /* void */ ; p = p->next) { |
589 | 96 |
97 if (size < sizeof(int) || (size & 1)) { | |
98 m = p->last; | |
99 | |
100 } else { | |
101 m = ngx_align_ptr(p->last, NGX_ALIGNMENT); | |
102 } | |
104
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103 |
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104 if ((size_t) (p->end - m) >= size) { |
452 | 105 p->last = m + size; |
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106 |
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107 return m; |
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108 } |
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109 |
581 | 110 if ((size_t) (p->end - m) < NGX_ALIGNMENT) { |
583 | 111 pool->current = p->next; |
581 | 112 } |
113 | |
114 if (p->next == NULL) { | |
0
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115 break; |
39
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116 } |
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117 } |
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118 |
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119 /* allocate a new pool block */ |
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120 |
501 | 121 n = ngx_create_pool((size_t) (p->end - (u_char *) p), p->log); |
122 if (n == NULL) { | |
194
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123 return NULL; |
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124 } |
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125 |
583 | 126 if (pool->current == NULL) { |
127 pool->current = n; | |
581 | 128 } |
129 | |
0
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130 p->next = n; |
589 | 131 m = ngx_align_ptr(n->last, NGX_ALIGNMENT); |
452 | 132 n->last = m + size; |
156
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133 |
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134 return m; |
156
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135 } |
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136 |
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137 /* allocate a large block */ |
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138 |
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139 large = NULL; |
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140 last = NULL; |
0
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141 |
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142 if (pool->large) { |
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143 for (last = pool->large; /* void */ ; last = last->next) { |
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144 if (last->alloc == NULL) { |
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145 large = last; |
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146 last = NULL; |
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147 break; |
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148 } |
0
4eff17414a43
nginx-0.0.1-2002-08-06-20:39:45 import
Igor Sysoev <igor@sysoev.ru>
parents:
diff
changeset
|
149 |
156
afc333135a6b
nginx-0.0.1-2003-10-23-10:13:16 import
Igor Sysoev <igor@sysoev.ru>
parents:
133
diff
changeset
|
150 if (last->next == NULL) { |
afc333135a6b
nginx-0.0.1-2003-10-23-10:13:16 import
Igor Sysoev <igor@sysoev.ru>
parents:
133
diff
changeset
|
151 break; |
0
4eff17414a43
nginx-0.0.1-2002-08-06-20:39:45 import
Igor Sysoev <igor@sysoev.ru>
parents:
diff
changeset
|
152 } |
4eff17414a43
nginx-0.0.1-2002-08-06-20:39:45 import
Igor Sysoev <igor@sysoev.ru>
parents:
diff
changeset
|
153 } |
156
afc333135a6b
nginx-0.0.1-2003-10-23-10:13:16 import
Igor Sysoev <igor@sysoev.ru>
parents:
133
diff
changeset
|
154 } |
0
4eff17414a43
nginx-0.0.1-2002-08-06-20:39:45 import
Igor Sysoev <igor@sysoev.ru>
parents:
diff
changeset
|
155 |
156
afc333135a6b
nginx-0.0.1-2003-10-23-10:13:16 import
Igor Sysoev <igor@sysoev.ru>
parents:
133
diff
changeset
|
156 if (large == NULL) { |
501 | 157 large = ngx_palloc(pool, sizeof(ngx_pool_large_t)); |
158 if (large == NULL) { | |
194
2357fa41738a
nginx-0.0.1-2003-11-21-09:30:49 import
Igor Sysoev <igor@sysoev.ru>
parents:
156
diff
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|
159 return NULL; |
2357fa41738a
nginx-0.0.1-2003-11-21-09:30:49 import
Igor Sysoev <igor@sysoev.ru>
parents:
156
diff
changeset
|
160 } |
2357fa41738a
nginx-0.0.1-2003-11-21-09:30:49 import
Igor Sysoev <igor@sysoev.ru>
parents:
156
diff
changeset
|
161 |
156
afc333135a6b
nginx-0.0.1-2003-10-23-10:13:16 import
Igor Sysoev <igor@sysoev.ru>
parents:
133
diff
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|
162 large->next = NULL; |
afc333135a6b
nginx-0.0.1-2003-10-23-10:13:16 import
Igor Sysoev <igor@sysoev.ru>
parents:
133
diff
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|
163 } |
afc333135a6b
nginx-0.0.1-2003-10-23-10:13:16 import
Igor Sysoev <igor@sysoev.ru>
parents:
133
diff
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|
164 |
347
f48d579daf78
nginx-0.0.3-2004-06-08-20:26:37 import
Igor Sysoev <igor@sysoev.ru>
parents:
346
diff
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|
165 #if 0 |
501 | 166 p = ngx_memalign(ngx_pagesize, size, pool->log); |
167 if (p == NULL) { | |
194
2357fa41738a
nginx-0.0.1-2003-11-21-09:30:49 import
Igor Sysoev <igor@sysoev.ru>
parents:
156
diff
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|
168 return NULL; |
2357fa41738a
nginx-0.0.1-2003-11-21-09:30:49 import
Igor Sysoev <igor@sysoev.ru>
parents:
156
diff
changeset
|
169 } |
347
f48d579daf78
nginx-0.0.3-2004-06-08-20:26:37 import
Igor Sysoev <igor@sysoev.ru>
parents:
346
diff
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|
170 #else |
501 | 171 p = ngx_alloc(size, pool->log); |
172 if (p == NULL) { | |
347
f48d579daf78
nginx-0.0.3-2004-06-08-20:26:37 import
Igor Sysoev <igor@sysoev.ru>
parents:
346
diff
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|
173 return NULL; |
f48d579daf78
nginx-0.0.3-2004-06-08-20:26:37 import
Igor Sysoev <igor@sysoev.ru>
parents:
346
diff
changeset
|
174 } |
f48d579daf78
nginx-0.0.3-2004-06-08-20:26:37 import
Igor Sysoev <igor@sysoev.ru>
parents:
346
diff
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|
175 #endif |
0
4eff17414a43
nginx-0.0.1-2002-08-06-20:39:45 import
Igor Sysoev <igor@sysoev.ru>
parents:
diff
changeset
|
176 |
156
afc333135a6b
nginx-0.0.1-2003-10-23-10:13:16 import
Igor Sysoev <igor@sysoev.ru>
parents:
133
diff
changeset
|
177 if (pool->large == NULL) { |
afc333135a6b
nginx-0.0.1-2003-10-23-10:13:16 import
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diff
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|
178 pool->large = large; |
afc333135a6b
nginx-0.0.1-2003-10-23-10:13:16 import
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133
diff
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|
179 |
afc333135a6b
nginx-0.0.1-2003-10-23-10:13:16 import
Igor Sysoev <igor@sysoev.ru>
parents:
133
diff
changeset
|
180 } else if (last) { |
afc333135a6b
nginx-0.0.1-2003-10-23-10:13:16 import
Igor Sysoev <igor@sysoev.ru>
parents:
133
diff
changeset
|
181 last->next = large; |
afc333135a6b
nginx-0.0.1-2003-10-23-10:13:16 import
Igor Sysoev <igor@sysoev.ru>
parents:
133
diff
changeset
|
182 } |
0
4eff17414a43
nginx-0.0.1-2002-08-06-20:39:45 import
Igor Sysoev <igor@sysoev.ru>
parents:
diff
changeset
|
183 |
156
afc333135a6b
nginx-0.0.1-2003-10-23-10:13:16 import
Igor Sysoev <igor@sysoev.ru>
parents:
133
diff
changeset
|
184 large->alloc = p; |
afc333135a6b
nginx-0.0.1-2003-10-23-10:13:16 import
Igor Sysoev <igor@sysoev.ru>
parents:
133
diff
changeset
|
185 |
afc333135a6b
nginx-0.0.1-2003-10-23-10:13:16 import
Igor Sysoev <igor@sysoev.ru>
parents:
133
diff
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|
186 return p; |
afc333135a6b
nginx-0.0.1-2003-10-23-10:13:16 import
Igor Sysoev <igor@sysoev.ru>
parents:
133
diff
changeset
|
187 } |
afc333135a6b
nginx-0.0.1-2003-10-23-10:13:16 import
Igor Sysoev <igor@sysoev.ru>
parents:
133
diff
changeset
|
188 |
0
4eff17414a43
nginx-0.0.1-2002-08-06-20:39:45 import
Igor Sysoev <igor@sysoev.ru>
parents:
diff
changeset
|
189 |
501 | 190 ngx_int_t |
191 ngx_pfree(ngx_pool_t *pool, void *p) | |
156
afc333135a6b
nginx-0.0.1-2003-10-23-10:13:16 import
Igor Sysoev <igor@sysoev.ru>
parents:
133
diff
changeset
|
192 { |
afc333135a6b
nginx-0.0.1-2003-10-23-10:13:16 import
Igor Sysoev <igor@sysoev.ru>
parents:
133
diff
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|
193 ngx_pool_large_t *l; |
0
4eff17414a43
nginx-0.0.1-2002-08-06-20:39:45 import
Igor Sysoev <igor@sysoev.ru>
parents:
diff
changeset
|
194 |
156
afc333135a6b
nginx-0.0.1-2003-10-23-10:13:16 import
Igor Sysoev <igor@sysoev.ru>
parents:
133
diff
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|
195 for (l = pool->large; l; l = l->next) { |
afc333135a6b
nginx-0.0.1-2003-10-23-10:13:16 import
Igor Sysoev <igor@sysoev.ru>
parents:
133
diff
changeset
|
196 if (p == l->alloc) { |
257
70e1c7d2b83d
nginx-0.0.2-2004-02-11-20:08:49 import
Igor Sysoev <igor@sysoev.ru>
parents:
194
diff
changeset
|
197 ngx_log_debug1(NGX_LOG_DEBUG_ALLOC, pool->log, 0, |
461 | 198 "free: %p", l->alloc); |
477 | 199 ngx_free(l->alloc); |
156
afc333135a6b
nginx-0.0.1-2003-10-23-10:13:16 import
Igor Sysoev <igor@sysoev.ru>
parents:
133
diff
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|
200 l->alloc = NULL; |
436
9549fc9508e5
nginx-0.0.11-2004-09-23-10:32:00 import
Igor Sysoev <igor@sysoev.ru>
parents:
429
diff
changeset
|
201 |
9549fc9508e5
nginx-0.0.11-2004-09-23-10:32:00 import
Igor Sysoev <igor@sysoev.ru>
parents:
429
diff
changeset
|
202 return NGX_OK; |
156
afc333135a6b
nginx-0.0.1-2003-10-23-10:13:16 import
Igor Sysoev <igor@sysoev.ru>
parents:
133
diff
changeset
|
203 } |
0
4eff17414a43
nginx-0.0.1-2002-08-06-20:39:45 import
Igor Sysoev <igor@sysoev.ru>
parents:
diff
changeset
|
204 } |
436
9549fc9508e5
nginx-0.0.11-2004-09-23-10:32:00 import
Igor Sysoev <igor@sysoev.ru>
parents:
429
diff
changeset
|
205 |
9549fc9508e5
nginx-0.0.11-2004-09-23-10:32:00 import
Igor Sysoev <igor@sysoev.ru>
parents:
429
diff
changeset
|
206 return NGX_DECLINED; |
0
4eff17414a43
nginx-0.0.1-2002-08-06-20:39:45 import
Igor Sysoev <igor@sysoev.ru>
parents:
diff
changeset
|
207 } |
4eff17414a43
nginx-0.0.1-2002-08-06-20:39:45 import
Igor Sysoev <igor@sysoev.ru>
parents:
diff
changeset
|
208 |
156
afc333135a6b
nginx-0.0.1-2003-10-23-10:13:16 import
Igor Sysoev <igor@sysoev.ru>
parents:
133
diff
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|
209 |
501 | 210 void * |
211 ngx_pcalloc(ngx_pool_t *pool, size_t size) | |
0
4eff17414a43
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Igor Sysoev <igor@sysoev.ru>
parents:
diff
changeset
|
212 { |
4eff17414a43
nginx-0.0.1-2002-08-06-20:39:45 import
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parents:
diff
changeset
|
213 void *p; |
4eff17414a43
nginx-0.0.1-2002-08-06-20:39:45 import
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parents:
diff
changeset
|
214 |
4eff17414a43
nginx-0.0.1-2002-08-06-20:39:45 import
Igor Sysoev <igor@sysoev.ru>
parents:
diff
changeset
|
215 p = ngx_palloc(pool, size); |
39
83fa61cd3d2f
nginx-0.0.1-2002-12-24-20:30:59 import
Igor Sysoev <igor@sysoev.ru>
parents:
26
diff
changeset
|
216 if (p) { |
0
4eff17414a43
nginx-0.0.1-2002-08-06-20:39:45 import
Igor Sysoev <igor@sysoev.ru>
parents:
diff
changeset
|
217 ngx_memzero(p, size); |
39
83fa61cd3d2f
nginx-0.0.1-2002-12-24-20:30:59 import
Igor Sysoev <igor@sysoev.ru>
parents:
26
diff
changeset
|
218 } |
0
4eff17414a43
nginx-0.0.1-2002-08-06-20:39:45 import
Igor Sysoev <igor@sysoev.ru>
parents:
diff
changeset
|
219 |
4eff17414a43
nginx-0.0.1-2002-08-06-20:39:45 import
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parents:
diff
changeset
|
220 return p; |
4eff17414a43
nginx-0.0.1-2002-08-06-20:39:45 import
Igor Sysoev <igor@sysoev.ru>
parents:
diff
changeset
|
221 } |
346
55e496a8ece3
nginx-0.0.3-2004-06-06-23:49:18 import
Igor Sysoev <igor@sysoev.ru>
parents:
297
diff
changeset
|
222 |
509 | 223 |
605 | 224 void * |
225 ngx_shalloc(size_t size) | |
226 { | |
227 u_char *p; | |
228 | |
229 if (size < sizeof(int) || (size & 1)) { | |
230 p = ngx_cycle->shm_last; | |
231 | |
232 } else { | |
233 p = ngx_align_ptr(ngx_cycle->shm_last, NGX_ALIGNMENT); | |
234 } | |
235 | |
236 if ((size_t) (ngx_cycle->shm_end - p) >= size) { | |
237 ngx_cycle->shm_last = p + size; | |
238 return p; | |
239 } | |
240 | |
241 ngx_log_error(NGX_LOG_EMERG, ngx_cycle->log, 0, | |
242 "allocation of %uz bytes in shared memory failed, " | |
243 "only %uz are available", | |
244 size, ngx_cycle->shm_end - ngx_cycle->shm_last); | |
245 | |
246 return NULL; | |
247 } | |
248 | |
249 | |
250 void * | |
251 ngx_shcalloc(size_t size) | |
252 { | |
253 void *p; | |
254 | |
255 p = ngx_shalloc(size); | |
256 if (p) { | |
257 ngx_memzero(p, size); | |
258 } | |
259 | |
260 return p; | |
261 } | |
262 | |
263 | |
509 | 264 ngx_pool_cleanup_t * |
563 | 265 ngx_pool_cleanup_add(ngx_pool_t *p, size_t size) |
509 | 266 { |
267 ngx_pool_cleanup_t *c; | |
268 | |
269 c = ngx_palloc(p, sizeof(ngx_pool_cleanup_t)); | |
270 if (c == NULL) { | |
271 return NULL; | |
272 } | |
273 | |
563 | 274 if (size) { |
275 c->data = ngx_palloc(p, size); | |
276 if (c->data == NULL) { | |
277 return NULL; | |
278 } | |
279 | |
280 } else { | |
281 c->data = NULL; | |
282 } | |
283 | |
284 c->handler = NULL; | |
509 | 285 c->next = p->cleanup; |
286 | |
287 p->cleanup = c; | |
288 | |
563 | 289 ngx_log_debug1(NGX_LOG_DEBUG_ALLOC, p->log, 0, "add cleanup: %p", c); |
290 | |
509 | 291 return c; |
292 } | |
293 | |
294 | |
295 void | |
296 ngx_pool_cleanup_file(void *data) | |
297 { | |
298 ngx_pool_cleanup_file_t *c = data; | |
299 | |
563 | 300 ngx_log_debug2(NGX_LOG_DEBUG_ALLOC, c->log, 0, "run cleanup: %p, fd:%d", |
301 c, c->fd); | |
302 | |
509 | 303 if (ngx_close_file(c->fd) == NGX_FILE_ERROR) { |
304 ngx_log_error(NGX_LOG_ALERT, c->log, ngx_errno, | |
305 ngx_close_file_n " \"%s\" failed", c->name); | |
306 } | |
307 } | |
308 | |
309 | |
346
55e496a8ece3
nginx-0.0.3-2004-06-06-23:49:18 import
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parents:
297
diff
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|
310 #if 0 |
55e496a8ece3
nginx-0.0.3-2004-06-06-23:49:18 import
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parents:
297
diff
changeset
|
311 |
501 | 312 static void * |
313 ngx_get_cached_block(size_t size) | |
346
55e496a8ece3
nginx-0.0.3-2004-06-06-23:49:18 import
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parents:
297
diff
changeset
|
314 { |
55e496a8ece3
nginx-0.0.3-2004-06-06-23:49:18 import
Igor Sysoev <igor@sysoev.ru>
parents:
297
diff
changeset
|
315 void *p; |
55e496a8ece3
nginx-0.0.3-2004-06-06-23:49:18 import
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parents:
297
diff
changeset
|
316 ngx_cached_block_slot_t *slot; |
55e496a8ece3
nginx-0.0.3-2004-06-06-23:49:18 import
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parents:
297
diff
changeset
|
317 |
55e496a8ece3
nginx-0.0.3-2004-06-06-23:49:18 import
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parents:
297
diff
changeset
|
318 if (ngx_cycle->cache == NULL) { |
55e496a8ece3
nginx-0.0.3-2004-06-06-23:49:18 import
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parents:
297
diff
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|
319 return NULL; |
55e496a8ece3
nginx-0.0.3-2004-06-06-23:49:18 import
Igor Sysoev <igor@sysoev.ru>
parents:
297
diff
changeset
|
320 } |
55e496a8ece3
nginx-0.0.3-2004-06-06-23:49:18 import
Igor Sysoev <igor@sysoev.ru>
parents:
297
diff
changeset
|
321 |
55e496a8ece3
nginx-0.0.3-2004-06-06-23:49:18 import
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parents:
297
diff
changeset
|
322 slot = &ngx_cycle->cache[(size + ngx_pagesize - 1) / ngx_pagesize]; |
55e496a8ece3
nginx-0.0.3-2004-06-06-23:49:18 import
Igor Sysoev <igor@sysoev.ru>
parents:
297
diff
changeset
|
323 |
55e496a8ece3
nginx-0.0.3-2004-06-06-23:49:18 import
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parents:
297
diff
changeset
|
324 slot->tries++; |
55e496a8ece3
nginx-0.0.3-2004-06-06-23:49:18 import
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parents:
297
diff
changeset
|
325 |
55e496a8ece3
nginx-0.0.3-2004-06-06-23:49:18 import
Igor Sysoev <igor@sysoev.ru>
parents:
297
diff
changeset
|
326 if (slot->number) { |
55e496a8ece3
nginx-0.0.3-2004-06-06-23:49:18 import
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parents:
297
diff
changeset
|
327 p = slot->block; |
55e496a8ece3
nginx-0.0.3-2004-06-06-23:49:18 import
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parents:
297
diff
changeset
|
328 slot->block = slot->block->next; |
55e496a8ece3
nginx-0.0.3-2004-06-06-23:49:18 import
Igor Sysoev <igor@sysoev.ru>
parents:
297
diff
changeset
|
329 slot->number--; |
55e496a8ece3
nginx-0.0.3-2004-06-06-23:49:18 import
Igor Sysoev <igor@sysoev.ru>
parents:
297
diff
changeset
|
330 return p; |
55e496a8ece3
nginx-0.0.3-2004-06-06-23:49:18 import
Igor Sysoev <igor@sysoev.ru>
parents:
297
diff
changeset
|
331 } |
55e496a8ece3
nginx-0.0.3-2004-06-06-23:49:18 import
Igor Sysoev <igor@sysoev.ru>
parents:
297
diff
changeset
|
332 |
55e496a8ece3
nginx-0.0.3-2004-06-06-23:49:18 import
Igor Sysoev <igor@sysoev.ru>
parents:
297
diff
changeset
|
333 return NULL; |
55e496a8ece3
nginx-0.0.3-2004-06-06-23:49:18 import
Igor Sysoev <igor@sysoev.ru>
parents:
297
diff
changeset
|
334 } |
55e496a8ece3
nginx-0.0.3-2004-06-06-23:49:18 import
Igor Sysoev <igor@sysoev.ru>
parents:
297
diff
changeset
|
335 |
55e496a8ece3
nginx-0.0.3-2004-06-06-23:49:18 import
Igor Sysoev <igor@sysoev.ru>
parents:
297
diff
changeset
|
336 #endif |