Mercurial > hg > nginx-quic
annotate src/core/ngx_palloc.c @ 1901:d880fa02fb65
use CMSG_LEN(), this fixes an alert "sendmsg() failed (9: Bad file descriptor)"
on some 64-bit platforms
author | Igor Sysoev <igor@sysoev.ru> |
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date | Tue, 19 Feb 2008 16:34:55 +0000 |
parents | d65172100f6b |
children | 4d8140271204 |
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 |
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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) | |
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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; | |
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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) | |
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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) { | |
1744 | 43 ngx_log_debug1(NGX_LOG_DEBUG_ALLOC, pool->log, 0, |
44 "run cleanup: %p", c); | |
509 | 45 c->handler(c->data); |
46 } | |
47 } | |
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48 |
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49 for (l = pool->large; l; l = l->next) { |
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50 |
461 | 51 ngx_log_debug1(NGX_LOG_DEBUG_ALLOC, pool->log, 0, "free: %p", l->alloc); |
257
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52 |
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53 if (l->alloc) { |
477 | 54 ngx_free(l->alloc); |
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55 } |
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56 } |
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57 |
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58 #if (NGX_DEBUG) |
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59 |
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60 /* |
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61 * we could allocate the pool->log from this pool |
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62 * so we can not use this log while the free()ing the pool |
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63 */ |
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64 |
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65 for (p = pool, n = pool->next; /* void */; p = n, n = n->next) { |
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66 ngx_log_debug2(NGX_LOG_DEBUG_ALLOC, pool->log, 0, |
461 | 67 "free: %p, unused: %uz", p, p->end - p->last); |
133
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68 |
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69 if (n == NULL) { |
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70 break; |
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71 } |
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72 } |
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73 |
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74 #endif |
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75 |
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76 for (p = pool, n = pool->next; /* void */; p = n, n = n->next) { |
477 | 77 ngx_free(p); |
128
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78 |
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79 if (n == NULL) { |
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80 break; |
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81 } |
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82 } |
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83 } |
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84 |
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85 |
501 | 86 void * |
87 ngx_palloc(ngx_pool_t *pool, size_t size) | |
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88 { |
485 | 89 u_char *m; |
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90 ngx_pool_t *p, *n, *current; |
629 | 91 ngx_pool_large_t *large; |
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92 |
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93 if (size <= (size_t) NGX_MAX_ALLOC_FROM_POOL |
485 | 94 && size <= (size_t) (pool->end - (u_char *) pool) |
589 | 95 - (size_t) ngx_align_ptr(sizeof(ngx_pool_t), NGX_ALIGNMENT)) |
429
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96 { |
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97 p = pool->current; |
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98 current = p; |
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99 |
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100 for ( ;; ) { |
589 | 101 |
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102 #if (NGX_HAVE_NONALIGNED) |
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103 |
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104 /* |
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105 * allow non-aligned memory blocks for small allocations (1, 2, |
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106 * or 3 bytes) and for odd length strings (struct's have aligned |
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107 * size) |
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108 */ |
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109 |
589 | 110 if (size < sizeof(int) || (size & 1)) { |
111 m = p->last; | |
112 | |
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113 } else |
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114 #endif |
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115 |
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116 { |
589 | 117 m = ngx_align_ptr(p->last, NGX_ALIGNMENT); |
118 } | |
104
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119 |
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120 if ((size_t) (p->end - m) >= size) { |
452 | 121 p->last = m + size; |
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122 |
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123 return m; |
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124 } |
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125 |
581 | 126 if ((size_t) (p->end - m) < NGX_ALIGNMENT) { |
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127 current = p->next; |
581 | 128 } |
129 | |
130 if (p->next == NULL) { | |
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131 break; |
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132 } |
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133 |
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134 p = p->next; |
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135 pool->current = current; |
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136 } |
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137 |
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138 /* allocate a new pool block */ |
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139 |
501 | 140 n = ngx_create_pool((size_t) (p->end - (u_char *) p), p->log); |
141 if (n == NULL) { | |
194
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142 return NULL; |
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143 } |
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144 |
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145 pool->current = current ? current : n; |
581 | 146 |
0
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147 p->next = n; |
589 | 148 m = ngx_align_ptr(n->last, NGX_ALIGNMENT); |
452 | 149 n->last = m + size; |
156
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150 |
0
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151 return m; |
156
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152 } |
0
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153 |
347
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154 #if 0 |
501 | 155 p = ngx_memalign(ngx_pagesize, size, pool->log); |
156 if (p == NULL) { | |
194
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157 return NULL; |
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158 } |
347
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159 #else |
501 | 160 p = ngx_alloc(size, pool->log); |
161 if (p == NULL) { | |
347
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162 return NULL; |
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163 } |
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164 #endif |
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165 |
629 | 166 large = ngx_palloc(pool, sizeof(ngx_pool_large_t)); |
167 if (large == NULL) { | |
1317 | 168 ngx_free(p); |
629 | 169 return NULL; |
156
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170 } |
0
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171 |
156
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172 large->alloc = p; |
629 | 173 large->next = pool->large; |
174 pool->large = large; | |
156
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175 |
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176 return p; |
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177 } |
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178 |
0
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179 |
501 | 180 ngx_int_t |
181 ngx_pfree(ngx_pool_t *pool, void *p) | |
156
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182 { |
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183 ngx_pool_large_t *l; |
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184 |
156
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185 for (l = pool->large; l; l = l->next) { |
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186 if (p == l->alloc) { |
257
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187 ngx_log_debug1(NGX_LOG_DEBUG_ALLOC, pool->log, 0, |
461 | 188 "free: %p", l->alloc); |
477 | 189 ngx_free(l->alloc); |
156
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190 l->alloc = NULL; |
436
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191 |
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192 return NGX_OK; |
156
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193 } |
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194 } |
436
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195 |
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196 return NGX_DECLINED; |
0
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197 } |
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198 |
156
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199 |
501 | 200 void * |
201 ngx_pcalloc(ngx_pool_t *pool, size_t size) | |
0
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202 { |
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203 void *p; |
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204 |
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205 p = ngx_palloc(pool, size); |
39
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206 if (p) { |
0
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207 ngx_memzero(p, size); |
39
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208 } |
0
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209 |
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210 return p; |
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211 } |
346
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212 |
509 | 213 |
214 ngx_pool_cleanup_t * | |
563 | 215 ngx_pool_cleanup_add(ngx_pool_t *p, size_t size) |
509 | 216 { |
217 ngx_pool_cleanup_t *c; | |
218 | |
219 c = ngx_palloc(p, sizeof(ngx_pool_cleanup_t)); | |
220 if (c == NULL) { | |
221 return NULL; | |
222 } | |
223 | |
563 | 224 if (size) { |
225 c->data = ngx_palloc(p, size); | |
226 if (c->data == NULL) { | |
227 return NULL; | |
228 } | |
229 | |
230 } else { | |
231 c->data = NULL; | |
232 } | |
233 | |
234 c->handler = NULL; | |
509 | 235 c->next = p->cleanup; |
236 | |
237 p->cleanup = c; | |
238 | |
563 | 239 ngx_log_debug1(NGX_LOG_DEBUG_ALLOC, p->log, 0, "add cleanup: %p", c); |
240 | |
509 | 241 return c; |
242 } | |
243 | |
244 | |
245 void | |
246 ngx_pool_cleanup_file(void *data) | |
247 { | |
248 ngx_pool_cleanup_file_t *c = data; | |
249 | |
1744 | 250 ngx_log_debug1(NGX_LOG_DEBUG_ALLOC, c->log, 0, "file cleanup: fd:%d", |
251 c->fd); | |
563 | 252 |
509 | 253 if (ngx_close_file(c->fd) == NGX_FILE_ERROR) { |
254 ngx_log_error(NGX_LOG_ALERT, c->log, ngx_errno, | |
255 ngx_close_file_n " \"%s\" failed", c->name); | |
256 } | |
257 } | |
258 | |
259 | |
1075
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260 void |
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261 ngx_pool_delete_file(void *data) |
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262 { |
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263 ngx_pool_cleanup_file_t *c = data; |
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264 |
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265 ngx_err_t err; |
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266 |
1744 | 267 ngx_log_debug2(NGX_LOG_DEBUG_ALLOC, c->log, 0, "file cleanup: fd:%d %s", |
268 c->fd, c->name); | |
1075
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269 |
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270 if (ngx_delete_file(c->name) == NGX_FILE_ERROR) { |
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271 err = ngx_errno; |
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272 |
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273 if (err != NGX_ENOENT) { |
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274 ngx_log_error(NGX_LOG_CRIT, c->log, err, |
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275 ngx_delete_file_n " \"%s\" failed", c->name); |
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276 } |
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277 } |
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278 |
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279 if (ngx_close_file(c->fd) == NGX_FILE_ERROR) { |
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280 ngx_log_error(NGX_LOG_ALERT, c->log, ngx_errno, |
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281 ngx_close_file_n " \"%s\" failed", c->name); |
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282 } |
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283 } |
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284 |
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285 |
346
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286 #if 0 |
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287 |
501 | 288 static void * |
289 ngx_get_cached_block(size_t size) | |
346
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290 { |
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291 void *p; |
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292 ngx_cached_block_slot_t *slot; |
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293 |
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294 if (ngx_cycle->cache == NULL) { |
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295 return NULL; |
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296 } |
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297 |
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298 slot = &ngx_cycle->cache[(size + ngx_pagesize - 1) / ngx_pagesize]; |
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299 |
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300 slot->tries++; |
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301 |
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302 if (slot->number) { |
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303 p = slot->block; |
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304 slot->block = slot->block->next; |
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305 slot->number--; |
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306 return p; |
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307 } |
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308 |
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309 return NULL; |
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310 } |
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311 |
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312 #endif |