Mercurial > hg > nginx-quic
annotate src/core/ngx_palloc.c @ 5887:e40ce16b2c42
Updated OpenSSL used for win32 builds.
author | Maxim Dounin <mdounin@mdounin.ru> |
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date | Tue, 28 Oct 2014 17:35:00 +0300 |
parents | c45c9812cf11 |
children | 6be7e59fdd2c |
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 |
2049 | 12 static void *ngx_palloc_block(ngx_pool_t *pool, size_t size); |
13 static void *ngx_palloc_large(ngx_pool_t *pool, size_t size); | |
14 | |
15 | |
501 | 16 ngx_pool_t * |
17 ngx_create_pool(size_t size, ngx_log_t *log) | |
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18 { |
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19 ngx_pool_t *p; |
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20 |
3388 | 21 p = ngx_memalign(NGX_POOL_ALIGNMENT, size, log); |
501 | 22 if (p == NULL) { |
527 | 23 return NULL; |
194
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24 } |
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25 |
2049 | 26 p->d.last = (u_char *) p + sizeof(ngx_pool_t); |
27 p->d.end = (u_char *) p + size; | |
28 p->d.next = NULL; | |
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29 p->d.failed = 0; |
2049 | 30 |
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31 size = size - sizeof(ngx_pool_t); |
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32 p->max = (size < NGX_MAX_ALLOC_FROM_POOL) ? size : NGX_MAX_ALLOC_FROM_POOL; |
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33 |
581 | 34 p->current = p; |
35 p->chain = NULL; | |
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36 p->large = NULL; |
509 | 37 p->cleanup = NULL; |
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38 p->log = log; |
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39 |
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40 return p; |
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41 } |
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43 |
501 | 44 void |
45 ngx_destroy_pool(ngx_pool_t *pool) | |
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46 { |
509 | 47 ngx_pool_t *p, *n; |
48 ngx_pool_large_t *l; | |
49 ngx_pool_cleanup_t *c; | |
50 | |
51 for (c = pool->cleanup; c; c = c->next) { | |
52 if (c->handler) { | |
1744 | 53 ngx_log_debug1(NGX_LOG_DEBUG_ALLOC, pool->log, 0, |
54 "run cleanup: %p", c); | |
509 | 55 c->handler(c->data); |
56 } | |
57 } | |
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59 for (l = pool->large; l; l = l->next) { |
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60 |
461 | 61 ngx_log_debug1(NGX_LOG_DEBUG_ALLOC, pool->log, 0, "free: %p", l->alloc); |
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63 if (l->alloc) { |
477 | 64 ngx_free(l->alloc); |
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65 } |
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66 } |
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68 #if (NGX_DEBUG) |
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69 |
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70 /* |
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71 * we could allocate the pool->log from this pool |
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72 * so we cannot use this log while free()ing the pool |
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73 */ |
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74 |
2049 | 75 for (p = pool, n = pool->d.next; /* void */; p = n, n = n->d.next) { |
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76 ngx_log_debug2(NGX_LOG_DEBUG_ALLOC, pool->log, 0, |
2049 | 77 "free: %p, unused: %uz", p, p->d.end - p->d.last); |
133
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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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84 #endif |
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85 |
2049 | 86 for (p = pool, n = pool->d.next; /* void */; p = n, n = n->d.next) { |
477 | 87 ngx_free(p); |
128
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88 |
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89 if (n == NULL) { |
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90 break; |
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91 } |
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92 } |
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93 } |
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95 |
2337 | 96 void |
97 ngx_reset_pool(ngx_pool_t *pool) | |
98 { | |
99 ngx_pool_t *p; | |
100 ngx_pool_large_t *l; | |
101 | |
102 for (l = pool->large; l; l = l->next) { | |
103 if (l->alloc) { | |
104 ngx_free(l->alloc); | |
105 } | |
106 } | |
107 | |
108 for (p = pool; p; p = p->d.next) { | |
109 p->d.last = (u_char *) p + sizeof(ngx_pool_t); | |
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110 p->d.failed = 0; |
2337 | 111 } |
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112 |
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113 pool->current = pool; |
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114 pool->chain = NULL; |
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115 pool->large = NULL; |
2337 | 116 } |
117 | |
118 | |
501 | 119 void * |
120 ngx_palloc(ngx_pool_t *pool, size_t size) | |
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121 { |
2049 | 122 u_char *m; |
123 ngx_pool_t *p; | |
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124 |
2049 | 125 if (size <= pool->max) { |
126 | |
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127 p = pool->current; |
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128 |
2049 | 129 do { |
130 m = ngx_align_ptr(p->d.last, NGX_ALIGNMENT); | |
589 | 131 |
2049 | 132 if ((size_t) (p->d.end - m) >= size) { |
133 p->d.last = m + size; | |
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134 |
2049 | 135 return m; |
589 | 136 } |
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137 |
2049 | 138 p = p->d.next; |
139 | |
140 } while (p); | |
141 | |
142 return ngx_palloc_block(pool, size); | |
143 } | |
144 | |
145 return ngx_palloc_large(pool, size); | |
146 } | |
147 | |
148 | |
149 void * | |
150 ngx_pnalloc(ngx_pool_t *pool, size_t size) | |
151 { | |
152 u_char *m; | |
153 ngx_pool_t *p; | |
154 | |
155 if (size <= pool->max) { | |
156 | |
157 p = pool->current; | |
158 | |
159 do { | |
160 m = p->d.last; | |
161 | |
162 if ((size_t) (p->d.end - m) >= size) { | |
163 p->d.last = m + size; | |
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164 |
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165 return m; |
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166 } |
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167 |
2049 | 168 p = p->d.next; |
169 | |
170 } while (p); | |
171 | |
172 return ngx_palloc_block(pool, size); | |
173 } | |
174 | |
175 return ngx_palloc_large(pool, size); | |
176 } | |
177 | |
581 | 178 |
2049 | 179 static void * |
180 ngx_palloc_block(ngx_pool_t *pool, size_t size) | |
181 { | |
182 u_char *m; | |
2055 | 183 size_t psize; |
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184 ngx_pool_t *p, *new; |
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185 |
2055 | 186 psize = (size_t) (pool->d.end - (u_char *) pool); |
187 | |
3388 | 188 m = ngx_memalign(NGX_POOL_ALIGNMENT, psize, pool->log); |
2056 | 189 if (m == NULL) { |
2049 | 190 return NULL; |
191 } | |
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192 |
2056 | 193 new = (ngx_pool_t *) m; |
194 | |
195 new->d.end = m + psize; | |
2055 | 196 new->d.next = NULL; |
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197 new->d.failed = 0; |
2055 | 198 |
2056 | 199 m += sizeof(ngx_pool_data_t); |
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200 m = ngx_align_ptr(m, NGX_ALIGNMENT); |
2056 | 201 new->d.last = m + size; |
202 | |
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203 for (p = pool->current; p->d.next; p = p->d.next) { |
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204 if (p->d.failed++ > 4) { |
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205 pool->current = p->d.next; |
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206 } |
2049 | 207 } |
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208 |
2049 | 209 p->d.next = new; |
210 | |
211 return m; | |
212 } | |
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213 |
2049 | 214 |
215 static void * | |
216 ngx_palloc_large(ngx_pool_t *pool, size_t size) | |
217 { | |
218 void *p; | |
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219 ngx_uint_t n; |
2049 | 220 ngx_pool_large_t *large; |
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221 |
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222 p = ngx_alloc(size, pool->log); |
501 | 223 if (p == NULL) { |
347
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224 return NULL; |
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225 } |
2129 | 226 |
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227 n = 0; |
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228 |
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229 for (large = pool->large; large; large = large->next) { |
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230 if (large->alloc == NULL) { |
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231 large->alloc = p; |
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232 return p; |
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233 } |
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234 |
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235 if (n++ > 3) { |
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236 break; |
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237 } |
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238 } |
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239 |
2129 | 240 large = ngx_palloc(pool, sizeof(ngx_pool_large_t)); |
241 if (large == NULL) { | |
242 ngx_free(p); | |
243 return NULL; | |
244 } | |
245 | |
246 large->alloc = p; | |
247 large->next = pool->large; | |
248 pool->large = large; | |
249 | |
250 return p; | |
251 } | |
252 | |
253 | |
254 void * | |
255 ngx_pmemalign(ngx_pool_t *pool, size_t size, size_t alignment) | |
256 { | |
257 void *p; | |
258 ngx_pool_large_t *large; | |
259 | |
260 p = ngx_memalign(alignment, size, pool->log); | |
261 if (p == NULL) { | |
262 return NULL; | |
263 } | |
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264 |
629 | 265 large = ngx_palloc(pool, sizeof(ngx_pool_large_t)); |
266 if (large == NULL) { | |
1317 | 267 ngx_free(p); |
629 | 268 return NULL; |
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269 } |
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270 |
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271 large->alloc = p; |
629 | 272 large->next = pool->large; |
273 pool->large = large; | |
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274 |
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275 return p; |
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276 } |
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277 |
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278 |
501 | 279 ngx_int_t |
280 ngx_pfree(ngx_pool_t *pool, void *p) | |
156
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281 { |
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282 ngx_pool_large_t *l; |
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283 |
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284 for (l = pool->large; l; l = l->next) { |
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285 if (p == l->alloc) { |
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286 ngx_log_debug1(NGX_LOG_DEBUG_ALLOC, pool->log, 0, |
461 | 287 "free: %p", l->alloc); |
477 | 288 ngx_free(l->alloc); |
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289 l->alloc = NULL; |
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290 |
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291 return NGX_OK; |
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292 } |
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293 } |
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294 |
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295 return NGX_DECLINED; |
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296 } |
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297 |
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298 |
501 | 299 void * |
300 ngx_pcalloc(ngx_pool_t *pool, size_t size) | |
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301 { |
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302 void *p; |
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303 |
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304 p = ngx_palloc(pool, size); |
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305 if (p) { |
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306 ngx_memzero(p, size); |
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307 } |
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308 |
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309 return p; |
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310 } |
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311 |
509 | 312 |
313 ngx_pool_cleanup_t * | |
563 | 314 ngx_pool_cleanup_add(ngx_pool_t *p, size_t size) |
509 | 315 { |
316 ngx_pool_cleanup_t *c; | |
317 | |
318 c = ngx_palloc(p, sizeof(ngx_pool_cleanup_t)); | |
319 if (c == NULL) { | |
320 return NULL; | |
321 } | |
322 | |
563 | 323 if (size) { |
324 c->data = ngx_palloc(p, size); | |
325 if (c->data == NULL) { | |
326 return NULL; | |
327 } | |
328 | |
329 } else { | |
330 c->data = NULL; | |
331 } | |
332 | |
333 c->handler = NULL; | |
509 | 334 c->next = p->cleanup; |
335 | |
336 p->cleanup = c; | |
337 | |
563 | 338 ngx_log_debug1(NGX_LOG_DEBUG_ALLOC, p->log, 0, "add cleanup: %p", c); |
339 | |
509 | 340 return c; |
341 } | |
342 | |
343 | |
344 void | |
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345 ngx_pool_run_cleanup_file(ngx_pool_t *p, ngx_fd_t fd) |
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346 { |
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347 ngx_pool_cleanup_t *c; |
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348 ngx_pool_cleanup_file_t *cf; |
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349 |
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350 for (c = p->cleanup; c; c = c->next) { |
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351 if (c->handler == ngx_pool_cleanup_file) { |
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352 |
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353 cf = c->data; |
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354 |
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355 if (cf->fd == fd) { |
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356 c->handler(cf); |
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357 c->handler = NULL; |
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358 return; |
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359 } |
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360 } |
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361 } |
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362 } |
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363 |
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364 |
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365 void |
509 | 366 ngx_pool_cleanup_file(void *data) |
367 { | |
368 ngx_pool_cleanup_file_t *c = data; | |
369 | |
1744 | 370 ngx_log_debug1(NGX_LOG_DEBUG_ALLOC, c->log, 0, "file cleanup: fd:%d", |
371 c->fd); | |
563 | 372 |
509 | 373 if (ngx_close_file(c->fd) == NGX_FILE_ERROR) { |
374 ngx_log_error(NGX_LOG_ALERT, c->log, ngx_errno, | |
375 ngx_close_file_n " \"%s\" failed", c->name); | |
376 } | |
377 } | |
378 | |
379 | |
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380 void |
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381 ngx_pool_delete_file(void *data) |
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382 { |
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383 ngx_pool_cleanup_file_t *c = data; |
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384 |
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385 ngx_err_t err; |
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386 |
1744 | 387 ngx_log_debug2(NGX_LOG_DEBUG_ALLOC, c->log, 0, "file cleanup: fd:%d %s", |
388 c->fd, c->name); | |
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389 |
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390 if (ngx_delete_file(c->name) == NGX_FILE_ERROR) { |
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391 err = ngx_errno; |
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392 |
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393 if (err != NGX_ENOENT) { |
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394 ngx_log_error(NGX_LOG_CRIT, c->log, err, |
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395 ngx_delete_file_n " \"%s\" failed", c->name); |
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396 } |
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397 } |
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398 |
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399 if (ngx_close_file(c->fd) == NGX_FILE_ERROR) { |
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400 ngx_log_error(NGX_LOG_ALERT, c->log, ngx_errno, |
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401 ngx_close_file_n " \"%s\" failed", c->name); |
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402 } |
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403 } |
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404 |
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405 |
346
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406 #if 0 |
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407 |
501 | 408 static void * |
409 ngx_get_cached_block(size_t size) | |
346
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410 { |
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411 void *p; |
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412 ngx_cached_block_slot_t *slot; |
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413 |
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414 if (ngx_cycle->cache == NULL) { |
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415 return NULL; |
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416 } |
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417 |
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418 slot = &ngx_cycle->cache[(size + ngx_pagesize - 1) / ngx_pagesize]; |
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419 |
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420 slot->tries++; |
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421 |
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422 if (slot->number) { |
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423 p = slot->block; |
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424 slot->block = slot->block->next; |
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425 slot->number--; |
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426 return p; |
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427 } |
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428 |
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429 return NULL; |
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430 } |
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431 |
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432 #endif |