Mercurial > hg > nginx
annotate src/core/ngx_open_file_cache.c @ 4476:94ef9d25ec5b
Changed ngx_open_and_stat_file() to use ngx_str_t.
No functional changes.
| author | Andrey Belov <defan@nginx.com> |
|---|---|
| date | Mon, 13 Feb 2012 16:16:45 +0000 |
| parents | d620f497c50f |
| children | 7033faf6dc3c |
| rev | line source |
|---|---|
| 1453 | 1 |
| 2 /* | |
| 3 * Copyright (C) Igor Sysoev | |
| 4412 | 4 * Copyright (C) Nginx, Inc. |
| 1453 | 5 */ |
| 6 | |
| 7 | |
| 8 #include <ngx_config.h> | |
| 9 #include <ngx_core.h> | |
| 10 #include <ngx_event.h> | |
| 11 | |
| 12 | |
| 13 /* | |
| 14 * open file cache caches | |
| 15 * open file handles with stat() info; | |
| 16 * directories stat() info; | |
| 17 * files and directories errors: not found, access denied, etc. | |
| 18 */ | |
| 19 | |
| 20 | |
| 3178 | 21 #define NGX_MIN_READ_AHEAD (128 * 1024) |
| 22 | |
| 23 | |
| 1453 | 24 static void ngx_open_file_cache_cleanup(void *data); |
|
4476
94ef9d25ec5b
Changed ngx_open_and_stat_file() to use ngx_str_t.
Andrey Belov <defan@nginx.com>
parents:
4412
diff
changeset
|
25 static ngx_int_t ngx_open_and_stat_file(ngx_str_t *name, |
|
94ef9d25ec5b
Changed ngx_open_and_stat_file() to use ngx_str_t.
Andrey Belov <defan@nginx.com>
parents:
4412
diff
changeset
|
26 ngx_open_file_info_t *of, ngx_log_t *log); |
| 1775 | 27 static void ngx_open_file_add_event(ngx_open_file_cache_t *cache, |
| 28 ngx_cached_open_file_t *file, ngx_open_file_info_t *of, ngx_log_t *log); | |
| 1453 | 29 static void ngx_open_file_cleanup(void *data); |
| 30 static void ngx_close_cached_file(ngx_open_file_cache_t *cache, | |
| 1772 | 31 ngx_cached_open_file_t *file, ngx_uint_t min_uses, ngx_log_t *log); |
| 1775 | 32 static void ngx_open_file_del_event(ngx_cached_open_file_t *file); |
| 1453 | 33 static void ngx_expire_old_cached_files(ngx_open_file_cache_t *cache, |
| 34 ngx_uint_t n, ngx_log_t *log); | |
| 35 static void ngx_open_file_cache_rbtree_insert_value(ngx_rbtree_node_t *temp, | |
| 36 ngx_rbtree_node_t *node, ngx_rbtree_node_t *sentinel); | |
| 1775 | 37 static ngx_cached_open_file_t * |
| 38 ngx_open_file_lookup(ngx_open_file_cache_t *cache, ngx_str_t *name, | |
| 39 uint32_t hash); | |
| 1453 | 40 static void ngx_open_file_cache_remove(ngx_event_t *ev); |
| 41 | |
| 42 | |
| 43 ngx_open_file_cache_t * | |
| 44 ngx_open_file_cache_init(ngx_pool_t *pool, ngx_uint_t max, time_t inactive) | |
| 45 { | |
| 46 ngx_pool_cleanup_t *cln; | |
| 47 ngx_open_file_cache_t *cache; | |
| 48 | |
| 49 cache = ngx_palloc(pool, sizeof(ngx_open_file_cache_t)); | |
| 50 if (cache == NULL) { | |
| 51 return NULL; | |
| 52 } | |
| 53 | |
| 1761 | 54 ngx_rbtree_init(&cache->rbtree, &cache->sentinel, |
|
1743
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optimize rbtree initialization and insert
Igor Sysoev <igor@sysoev.ru>
parents:
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diff
changeset
|
55 ngx_open_file_cache_rbtree_insert_value); |
| 1453 | 56 |
| 1765 | 57 ngx_queue_init(&cache->expire_queue); |
| 58 | |
| 1453 | 59 cache->current = 0; |
| 60 cache->max = max; | |
| 61 cache->inactive = inactive; | |
| 62 | |
| 63 cln = ngx_pool_cleanup_add(pool, 0); | |
| 64 if (cln == NULL) { | |
| 65 return NULL; | |
| 66 } | |
| 67 | |
| 68 cln->handler = ngx_open_file_cache_cleanup; | |
| 69 cln->data = cache; | |
| 70 | |
| 71 return cache; | |
| 72 } | |
| 73 | |
| 74 | |
| 75 static void | |
| 76 ngx_open_file_cache_cleanup(void *data) | |
| 77 { | |
| 78 ngx_open_file_cache_t *cache = data; | |
| 79 | |
| 1765 | 80 ngx_queue_t *q; |
| 1453 | 81 ngx_cached_open_file_t *file; |
| 82 | |
| 83 ngx_log_debug0(NGX_LOG_DEBUG_CORE, ngx_cycle->log, 0, | |
| 84 "open file cache cleanup"); | |
| 85 | |
| 86 for ( ;; ) { | |
| 87 | |
| 1765 | 88 if (ngx_queue_empty(&cache->expire_queue)) { |
| 1766 | 89 break; |
| 1453 | 90 } |
| 91 | |
| 1765 | 92 q = ngx_queue_last(&cache->expire_queue); |
| 93 | |
| 94 file = ngx_queue_data(q, ngx_cached_open_file_t, queue); | |
| 95 | |
| 96 ngx_queue_remove(q); | |
| 1453 | 97 |
| 98 ngx_rbtree_delete(&cache->rbtree, &file->node); | |
| 99 | |
| 100 cache->current--; | |
| 101 | |
| 102 ngx_log_debug1(NGX_LOG_DEBUG_CORE, ngx_cycle->log, 0, | |
| 103 "delete cached open file: %s", file->name); | |
| 104 | |
| 105 if (!file->err && !file->is_dir) { | |
| 106 file->close = 1; | |
| 107 file->count = 0; | |
| 1772 | 108 ngx_close_cached_file(cache, file, 0, ngx_cycle->log); |
| 1453 | 109 |
| 110 } else { | |
| 111 ngx_free(file->name); | |
| 112 ngx_free(file); | |
| 113 } | |
| 114 } | |
| 115 | |
| 116 if (cache->current) { | |
| 117 ngx_log_error(NGX_LOG_ALERT, ngx_cycle->log, 0, | |
| 118 "%d items still leave in open file cache", | |
| 119 cache->current); | |
| 120 } | |
| 121 | |
| 122 if (cache->rbtree.root != cache->rbtree.sentinel) { | |
| 123 ngx_log_error(NGX_LOG_ALERT, ngx_cycle->log, 0, | |
| 124 "rbtree still is not empty in open file cache"); | |
| 125 | |
| 126 } | |
| 127 } | |
| 128 | |
| 129 | |
| 130 ngx_int_t | |
| 131 ngx_open_cached_file(ngx_open_file_cache_t *cache, ngx_str_t *name, | |
| 132 ngx_open_file_info_t *of, ngx_pool_t *pool) | |
| 133 { | |
| 134 time_t now; | |
| 135 uint32_t hash; | |
| 136 ngx_int_t rc; | |
|
2756
09cab3f8d92e
*) of.test_only to not open file if only stat() is enough
Igor Sysoev <igor@sysoev.ru>
parents:
2629
diff
changeset
|
137 ngx_file_info_t fi; |
| 1453 | 138 ngx_pool_cleanup_t *cln; |
| 139 ngx_cached_open_file_t *file; | |
| 140 ngx_pool_cleanup_file_t *clnf; | |
| 141 ngx_open_file_cache_cleanup_t *ofcln; | |
| 142 | |
|
2069
23930ccd2642
use ngx_file_info() and test uniq if file is already open
Igor Sysoev <igor@sysoev.ru>
parents:
2063
diff
changeset
|
143 of->fd = NGX_INVALID_FILE; |
| 1453 | 144 of->err = 0; |
| 145 | |
| 146 if (cache == NULL) { | |
| 147 | |
|
2756
09cab3f8d92e
*) of.test_only to not open file if only stat() is enough
Igor Sysoev <igor@sysoev.ru>
parents:
2629
diff
changeset
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148 if (of->test_only) { |
|
09cab3f8d92e
*) of.test_only to not open file if only stat() is enough
Igor Sysoev <igor@sysoev.ru>
parents:
2629
diff
changeset
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149 |
|
2782
4bd7825fab80
uniform ngx_file_info() interface with ngx_fd_info()
Igor Sysoev <igor@sysoev.ru>
parents:
2756
diff
changeset
|
150 if (ngx_file_info(name->data, &fi) == NGX_FILE_ERROR) { |
|
2756
09cab3f8d92e
*) of.test_only to not open file if only stat() is enough
Igor Sysoev <igor@sysoev.ru>
parents:
2629
diff
changeset
|
151 of->err = ngx_errno; |
|
09cab3f8d92e
*) of.test_only to not open file if only stat() is enough
Igor Sysoev <igor@sysoev.ru>
parents:
2629
diff
changeset
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152 of->failed = ngx_file_info_n; |
|
09cab3f8d92e
*) of.test_only to not open file if only stat() is enough
Igor Sysoev <igor@sysoev.ru>
parents:
2629
diff
changeset
|
153 return NGX_ERROR; |
|
09cab3f8d92e
*) of.test_only to not open file if only stat() is enough
Igor Sysoev <igor@sysoev.ru>
parents:
2629
diff
changeset
|
154 } |
|
09cab3f8d92e
*) of.test_only to not open file if only stat() is enough
Igor Sysoev <igor@sysoev.ru>
parents:
2629
diff
changeset
|
155 |
|
09cab3f8d92e
*) of.test_only to not open file if only stat() is enough
Igor Sysoev <igor@sysoev.ru>
parents:
2629
diff
changeset
|
156 of->uniq = ngx_file_uniq(&fi); |
|
09cab3f8d92e
*) of.test_only to not open file if only stat() is enough
Igor Sysoev <igor@sysoev.ru>
parents:
2629
diff
changeset
|
157 of->mtime = ngx_file_mtime(&fi); |
|
09cab3f8d92e
*) of.test_only to not open file if only stat() is enough
Igor Sysoev <igor@sysoev.ru>
parents:
2629
diff
changeset
|
158 of->size = ngx_file_size(&fi); |
|
3899
e7cd13b7f759
Use more precise stat.st_blocks to account cache size on Unix
Igor Sysoev <igor@sysoev.ru>
parents:
3497
diff
changeset
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159 of->fs_size = ngx_file_fs_size(&fi); |
|
2756
09cab3f8d92e
*) of.test_only to not open file if only stat() is enough
Igor Sysoev <igor@sysoev.ru>
parents:
2629
diff
changeset
|
160 of->is_dir = ngx_is_dir(&fi); |
|
09cab3f8d92e
*) of.test_only to not open file if only stat() is enough
Igor Sysoev <igor@sysoev.ru>
parents:
2629
diff
changeset
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161 of->is_file = ngx_is_file(&fi); |
|
09cab3f8d92e
*) of.test_only to not open file if only stat() is enough
Igor Sysoev <igor@sysoev.ru>
parents:
2629
diff
changeset
|
162 of->is_link = ngx_is_link(&fi); |
|
09cab3f8d92e
*) of.test_only to not open file if only stat() is enough
Igor Sysoev <igor@sysoev.ru>
parents:
2629
diff
changeset
|
163 of->is_exec = ngx_is_exec(&fi); |
|
09cab3f8d92e
*) of.test_only to not open file if only stat() is enough
Igor Sysoev <igor@sysoev.ru>
parents:
2629
diff
changeset
|
164 |
|
09cab3f8d92e
*) of.test_only to not open file if only stat() is enough
Igor Sysoev <igor@sysoev.ru>
parents:
2629
diff
changeset
|
165 return NGX_OK; |
|
09cab3f8d92e
*) of.test_only to not open file if only stat() is enough
Igor Sysoev <igor@sysoev.ru>
parents:
2629
diff
changeset
|
166 } |
|
09cab3f8d92e
*) of.test_only to not open file if only stat() is enough
Igor Sysoev <igor@sysoev.ru>
parents:
2629
diff
changeset
|
167 |
| 1453 | 168 cln = ngx_pool_cleanup_add(pool, sizeof(ngx_pool_cleanup_file_t)); |
| 169 if (cln == NULL) { | |
| 170 return NGX_ERROR; | |
| 171 } | |
| 172 | |
|
4476
94ef9d25ec5b
Changed ngx_open_and_stat_file() to use ngx_str_t.
Andrey Belov <defan@nginx.com>
parents:
4412
diff
changeset
|
173 rc = ngx_open_and_stat_file(name, of, pool->log); |
| 1453 | 174 |
| 175 if (rc == NGX_OK && !of->is_dir) { | |
| 176 cln->handler = ngx_pool_cleanup_file; | |
| 177 clnf = cln->data; | |
| 178 | |
| 179 clnf->fd = of->fd; | |
| 180 clnf->name = name->data; | |
| 181 clnf->log = pool->log; | |
| 182 } | |
| 183 | |
| 184 return rc; | |
| 185 } | |
| 186 | |
| 187 cln = ngx_pool_cleanup_add(pool, sizeof(ngx_open_file_cache_cleanup_t)); | |
| 188 if (cln == NULL) { | |
| 189 return NGX_ERROR; | |
| 190 } | |
| 191 | |
| 192 now = ngx_time(); | |
| 193 | |
| 1775 | 194 hash = ngx_crc32_long(name->data, name->len); |
| 195 | |
| 196 file = ngx_open_file_lookup(cache, name, hash); | |
| 197 | |
| 198 if (file) { | |
| 199 | |
| 200 file->uses++; | |
| 201 | |
| 1987 | 202 ngx_queue_remove(&file->queue); |
| 203 | |
| 1775 | 204 if (file->fd == NGX_INVALID_FILE && file->err == 0 && !file->is_dir) { |
| 205 | |
| 206 /* file was not used often enough to keep open */ | |
| 207 | |
|
4476
94ef9d25ec5b
Changed ngx_open_and_stat_file() to use ngx_str_t.
Andrey Belov <defan@nginx.com>
parents:
4412
diff
changeset
|
208 rc = ngx_open_and_stat_file(name, of, pool->log); |
| 1453 | 209 |
| 1775 | 210 if (rc != NGX_OK && (of->err == 0 || !of->errors)) { |
| 211 goto failed; | |
| 212 } | |
| 213 | |
| 214 goto add_event; | |
| 1453 | 215 } |
| 216 | |
| 2070 | 217 if (file->use_event |
|
2063
67a29af877ed
initialize of.uniq in ngx_open_cached_file()
Igor Sysoev <igor@sysoev.ru>
parents:
2006
diff
changeset
|
218 || (file->event == NULL |
|
67a29af877ed
initialize of.uniq in ngx_open_cached_file()
Igor Sysoev <igor@sysoev.ru>
parents:
2006
diff
changeset
|
219 && (of->uniq == 0 || of->uniq == file->uniq) |
|
67a29af877ed
initialize of.uniq in ngx_open_cached_file()
Igor Sysoev <igor@sysoev.ru>
parents:
2006
diff
changeset
|
220 && now - file->created < of->valid)) |
| 1775 | 221 { |
| 222 if (file->err == 0) { | |
| 1772 | 223 |
| 1775 | 224 of->fd = file->fd; |
| 225 of->uniq = file->uniq; | |
| 226 of->mtime = file->mtime; | |
| 227 of->size = file->size; | |
| 1453 | 228 |
| 1775 | 229 of->is_dir = file->is_dir; |
| 230 of->is_file = file->is_file; | |
| 231 of->is_link = file->is_link; | |
| 232 of->is_exec = file->is_exec; | |
|
2246
987831d73bd8
cache directio flag in open file cache
Igor Sysoev <igor@sysoev.ru>
parents:
2231
diff
changeset
|
233 of->is_directio = file->is_directio; |
| 1453 | 234 |
| 1775 | 235 if (!file->is_dir) { |
| 236 file->count++; | |
| 237 ngx_open_file_add_event(cache, file, of, pool->log); | |
| 1453 | 238 } |
| 239 | |
| 1775 | 240 } else { |
| 241 of->err = file->err; | |
|
2783
87c088e6956a
set of.failed for cached error, the bug has been introduced in r2757
Igor Sysoev <igor@sysoev.ru>
parents:
2782
diff
changeset
|
242 of->failed = ngx_open_file_n; |
| 1775 | 243 } |
| 244 | |
| 245 goto found; | |
| 246 } | |
| 247 | |
| 248 ngx_log_debug4(NGX_LOG_DEBUG_CORE, pool->log, 0, | |
| 249 "retest open file: %s, fd:%d, c:%d, e:%d", | |
| 250 file->name, file->fd, file->count, file->err); | |
| 1453 | 251 |
| 1775 | 252 if (file->is_dir) { |
| 253 | |
| 254 /* | |
| 255 * chances that directory became file are very small | |
| 256 * so test_dir flag allows to use a single syscall | |
| 257 * in ngx_file_info() instead of three syscalls | |
| 258 */ | |
| 259 | |
| 260 of->test_dir = 1; | |
| 261 } | |
| 262 | |
|
2069
23930ccd2642
use ngx_file_info() and test uniq if file is already open
Igor Sysoev <igor@sysoev.ru>
parents:
2063
diff
changeset
|
263 of->fd = file->fd; |
|
23930ccd2642
use ngx_file_info() and test uniq if file is already open
Igor Sysoev <igor@sysoev.ru>
parents:
2063
diff
changeset
|
264 of->uniq = file->uniq; |
|
23930ccd2642
use ngx_file_info() and test uniq if file is already open
Igor Sysoev <igor@sysoev.ru>
parents:
2063
diff
changeset
|
265 |
|
4476
94ef9d25ec5b
Changed ngx_open_and_stat_file() to use ngx_str_t.
Andrey Belov <defan@nginx.com>
parents:
4412
diff
changeset
|
266 rc = ngx_open_and_stat_file(name, of, pool->log); |
| 1453 | 267 |
| 1775 | 268 if (rc != NGX_OK && (of->err == 0 || !of->errors)) { |
| 269 goto failed; | |
| 270 } | |
| 271 | |
| 272 if (of->is_dir) { | |
| 273 | |
| 274 if (file->is_dir || file->err) { | |
| 275 goto update; | |
| 276 } | |
| 277 | |
| 278 /* file became directory */ | |
| 1453 | 279 |
| 1775 | 280 } else if (of->err == 0) { /* file */ |
| 281 | |
| 282 if (file->is_dir || file->err) { | |
| 283 goto add_event; | |
| 284 } | |
| 1453 | 285 |
| 2070 | 286 if (of->uniq == file->uniq) { |
| 1453 | 287 |
| 1775 | 288 if (file->event) { |
| 289 file->use_event = 1; | |
| 1453 | 290 } |
| 291 | |
|
4101
31cf2902de60
Fix of the previous commit: is_directio flag processing introduced in r4077
Igor Sysoev <igor@sysoev.ru>
parents:
4100
diff
changeset
|
292 of->is_directio = file->is_directio; |
|
31cf2902de60
Fix of the previous commit: is_directio flag processing introduced in r4077
Igor Sysoev <igor@sysoev.ru>
parents:
4100
diff
changeset
|
293 |
|
4100
efeee901439a
Bugfix: open_file_cache did not update file info on retest.
Igor Sysoev <igor@sysoev.ru>
parents:
4076
diff
changeset
|
294 goto update; |
| 1775 | 295 } |
| 1453 | 296 |
| 1775 | 297 /* file was changed */ |
| 1453 | 298 |
| 1775 | 299 } else { /* error to cache */ |
| 1453 | 300 |
| 1775 | 301 if (file->err || file->is_dir) { |
| 302 goto update; | |
| 1453 | 303 } |
| 304 | |
| 1775 | 305 /* file was removed, etc. */ |
| 306 } | |
| 307 | |
| 308 if (file->count == 0) { | |
| 309 | |
| 310 ngx_open_file_del_event(file); | |
| 1453 | 311 |
| 1775 | 312 if (ngx_close_file(file->fd) == NGX_FILE_ERROR) { |
| 313 ngx_log_error(NGX_LOG_ALERT, pool->log, ngx_errno, | |
|
4476
94ef9d25ec5b
Changed ngx_open_and_stat_file() to use ngx_str_t.
Andrey Belov <defan@nginx.com>
parents:
4412
diff
changeset
|
314 ngx_close_file_n " \"%V\" failed", name); |
| 1775 | 315 } |
| 1453 | 316 |
| 1775 | 317 goto add_event; |
| 318 } | |
| 319 | |
| 320 ngx_rbtree_delete(&cache->rbtree, &file->node); | |
| 321 | |
| 322 cache->current--; | |
| 323 | |
| 324 file->close = 1; | |
| 325 | |
| 326 goto create; | |
| 1453 | 327 } |
| 328 | |
| 329 /* not found */ | |
| 330 | |
|
4476
94ef9d25ec5b
Changed ngx_open_and_stat_file() to use ngx_str_t.
Andrey Belov <defan@nginx.com>
parents:
4412
diff
changeset
|
331 rc = ngx_open_and_stat_file(name, of, pool->log); |
| 1453 | 332 |
| 333 if (rc != NGX_OK && (of->err == 0 || !of->errors)) { | |
| 334 goto failed; | |
| 335 } | |
| 336 | |
| 337 create: | |
| 338 | |
| 339 if (cache->current >= cache->max) { | |
| 340 ngx_expire_old_cached_files(cache, 0, pool->log); | |
| 341 } | |
| 342 | |
| 343 file = ngx_alloc(sizeof(ngx_cached_open_file_t), pool->log); | |
| 344 | |
| 345 if (file == NULL) { | |
| 346 goto failed; | |
| 347 } | |
| 348 | |
| 349 file->name = ngx_alloc(name->len + 1, pool->log); | |
| 350 | |
| 351 if (file->name == NULL) { | |
| 352 ngx_free(file); | |
| 353 file = NULL; | |
| 354 goto failed; | |
| 355 } | |
| 356 | |
| 357 ngx_cpystrn(file->name, name->data, name->len + 1); | |
| 358 | |
| 359 file->node.key = hash; | |
| 360 | |
| 361 ngx_rbtree_insert(&cache->rbtree, &file->node); | |
| 362 | |
| 363 cache->current++; | |
| 364 | |
| 1775 | 365 file->uses = 1; |
| 1453 | 366 file->count = 0; |
|
2934
b6d588fa3ee9
initialize use_event field in open file cache
Igor Sysoev <igor@sysoev.ru>
parents:
2783
diff
changeset
|
367 file->use_event = 0; |
| 1775 | 368 file->event = NULL; |
| 369 | |
| 370 add_event: | |
| 371 | |
| 372 ngx_open_file_add_event(cache, file, of, pool->log); | |
| 1453 | 373 |
| 374 update: | |
| 375 | |
| 376 file->fd = of->fd; | |
| 377 file->err = of->err; | |
| 378 | |
| 379 if (of->err == 0) { | |
| 380 file->uniq = of->uniq; | |
| 381 file->mtime = of->mtime; | |
| 382 file->size = of->size; | |
| 383 | |
| 384 file->close = 0; | |
| 385 | |
| 386 file->is_dir = of->is_dir; | |
| 387 file->is_file = of->is_file; | |
| 388 file->is_link = of->is_link; | |
| 389 file->is_exec = of->is_exec; | |
|
2246
987831d73bd8
cache directio flag in open file cache
Igor Sysoev <igor@sysoev.ru>
parents:
2231
diff
changeset
|
390 file->is_directio = of->is_directio; |
| 1453 | 391 |
| 392 if (!of->is_dir) { | |
| 393 file->count++; | |
| 394 } | |
| 395 } | |
| 396 | |
| 397 file->created = now; | |
| 398 | |
| 399 found: | |
| 400 | |
| 401 file->accessed = now; | |
| 402 | |
| 1765 | 403 ngx_queue_insert_head(&cache->expire_queue, &file->queue); |
| 1453 | 404 |
| 1772 | 405 ngx_log_debug5(NGX_LOG_DEBUG_CORE, pool->log, 0, |
| 406 "cached open file: %s, fd:%d, c:%d, e:%d, u:%d", | |
| 407 file->name, file->fd, file->count, file->err, file->uses); | |
| 1453 | 408 |
| 409 if (of->err == 0) { | |
| 410 | |
| 411 if (!of->is_dir) { | |
| 412 cln->handler = ngx_open_file_cleanup; | |
| 413 ofcln = cln->data; | |
| 414 | |
| 415 ofcln->cache = cache; | |
| 416 ofcln->file = file; | |
| 1772 | 417 ofcln->min_uses = of->min_uses; |
| 1453 | 418 ofcln->log = pool->log; |
| 419 } | |
| 420 | |
| 421 return NGX_OK; | |
| 422 } | |
| 423 | |
| 424 return NGX_ERROR; | |
| 425 | |
| 426 failed: | |
| 427 | |
|
1988
34051c712e41
fix segfault when file is deleted and open_file_cache_errors is off
Igor Sysoev <igor@sysoev.ru>
parents:
1987
diff
changeset
|
428 if (file) { |
| 1453 | 429 ngx_rbtree_delete(&cache->rbtree, &file->node); |
| 430 | |
| 431 cache->current--; | |
| 432 | |
|
1988
34051c712e41
fix segfault when file is deleted and open_file_cache_errors is off
Igor Sysoev <igor@sysoev.ru>
parents:
1987
diff
changeset
|
433 if (file->count == 0) { |
|
34051c712e41
fix segfault when file is deleted and open_file_cache_errors is off
Igor Sysoev <igor@sysoev.ru>
parents:
1987
diff
changeset
|
434 |
|
2006
b52cb9bf2064
style fix: remove tabs and trailing spaces
Igor Sysoev <igor@sysoev.ru>
parents:
1988
diff
changeset
|
435 if (file->fd != NGX_INVALID_FILE) { |
|
b52cb9bf2064
style fix: remove tabs and trailing spaces
Igor Sysoev <igor@sysoev.ru>
parents:
1988
diff
changeset
|
436 if (ngx_close_file(file->fd) == NGX_FILE_ERROR) { |
|
b52cb9bf2064
style fix: remove tabs and trailing spaces
Igor Sysoev <igor@sysoev.ru>
parents:
1988
diff
changeset
|
437 ngx_log_error(NGX_LOG_ALERT, pool->log, ngx_errno, |
|
b52cb9bf2064
style fix: remove tabs and trailing spaces
Igor Sysoev <igor@sysoev.ru>
parents:
1988
diff
changeset
|
438 ngx_close_file_n " \"%s\" failed", |
|
1988
34051c712e41
fix segfault when file is deleted and open_file_cache_errors is off
Igor Sysoev <igor@sysoev.ru>
parents:
1987
diff
changeset
|
439 file->name); |
|
2006
b52cb9bf2064
style fix: remove tabs and trailing spaces
Igor Sysoev <igor@sysoev.ru>
parents:
1988
diff
changeset
|
440 } |
|
b52cb9bf2064
style fix: remove tabs and trailing spaces
Igor Sysoev <igor@sysoev.ru>
parents:
1988
diff
changeset
|
441 } |
|
1988
34051c712e41
fix segfault when file is deleted and open_file_cache_errors is off
Igor Sysoev <igor@sysoev.ru>
parents:
1987
diff
changeset
|
442 |
|
34051c712e41
fix segfault when file is deleted and open_file_cache_errors is off
Igor Sysoev <igor@sysoev.ru>
parents:
1987
diff
changeset
|
443 ngx_free(file->name); |
|
34051c712e41
fix segfault when file is deleted and open_file_cache_errors is off
Igor Sysoev <igor@sysoev.ru>
parents:
1987
diff
changeset
|
444 ngx_free(file); |
|
34051c712e41
fix segfault when file is deleted and open_file_cache_errors is off
Igor Sysoev <igor@sysoev.ru>
parents:
1987
diff
changeset
|
445 |
|
34051c712e41
fix segfault when file is deleted and open_file_cache_errors is off
Igor Sysoev <igor@sysoev.ru>
parents:
1987
diff
changeset
|
446 } else { |
|
34051c712e41
fix segfault when file is deleted and open_file_cache_errors is off
Igor Sysoev <igor@sysoev.ru>
parents:
1987
diff
changeset
|
447 file->close = 1; |
| 1453 | 448 } |
| 449 } | |
| 450 | |
| 451 if (of->fd != NGX_INVALID_FILE) { | |
| 452 if (ngx_close_file(of->fd) == NGX_FILE_ERROR) { | |
| 453 ngx_log_error(NGX_LOG_ALERT, pool->log, ngx_errno, | |
|
4476
94ef9d25ec5b
Changed ngx_open_and_stat_file() to use ngx_str_t.
Andrey Belov <defan@nginx.com>
parents:
4412
diff
changeset
|
454 ngx_close_file_n " \"%V\" failed", name); |
| 1453 | 455 } |
| 456 } | |
| 457 | |
| 458 return NGX_ERROR; | |
| 459 } | |
| 460 | |
| 461 | |
| 462 static ngx_int_t | |
|
4476
94ef9d25ec5b
Changed ngx_open_and_stat_file() to use ngx_str_t.
Andrey Belov <defan@nginx.com>
parents:
4412
diff
changeset
|
463 ngx_open_and_stat_file(ngx_str_t *name, ngx_open_file_info_t *of, |
|
94ef9d25ec5b
Changed ngx_open_and_stat_file() to use ngx_str_t.
Andrey Belov <defan@nginx.com>
parents:
4412
diff
changeset
|
464 ngx_log_t *log) |
| 1453 | 465 { |
| 466 ngx_fd_t fd; | |
| 467 ngx_file_info_t fi; | |
| 468 | |
| 2070 | 469 if (of->fd != NGX_INVALID_FILE) { |
| 1453 | 470 |
|
4476
94ef9d25ec5b
Changed ngx_open_and_stat_file() to use ngx_str_t.
Andrey Belov <defan@nginx.com>
parents:
4412
diff
changeset
|
471 if (ngx_file_info(name->data, &fi) == NGX_FILE_ERROR) { |
|
2756
09cab3f8d92e
*) of.test_only to not open file if only stat() is enough
Igor Sysoev <igor@sysoev.ru>
parents:
2629
diff
changeset
|
472 of->failed = ngx_file_info_n; |
|
2069
23930ccd2642
use ngx_file_info() and test uniq if file is already open
Igor Sysoev <igor@sysoev.ru>
parents:
2063
diff
changeset
|
473 goto failed; |
| 1453 | 474 } |
| 475 | |
| 2070 | 476 if (of->uniq == ngx_file_uniq(&fi)) { |
|
2069
23930ccd2642
use ngx_file_info() and test uniq if file is already open
Igor Sysoev <igor@sysoev.ru>
parents:
2063
diff
changeset
|
477 goto done; |
|
23930ccd2642
use ngx_file_info() and test uniq if file is already open
Igor Sysoev <igor@sysoev.ru>
parents:
2063
diff
changeset
|
478 } |
| 1453 | 479 |
| 2070 | 480 } else if (of->test_dir) { |
| 481 | |
|
4476
94ef9d25ec5b
Changed ngx_open_and_stat_file() to use ngx_str_t.
Andrey Belov <defan@nginx.com>
parents:
4412
diff
changeset
|
482 if (ngx_file_info(name->data, &fi) == NGX_FILE_ERROR) { |
|
2756
09cab3f8d92e
*) of.test_only to not open file if only stat() is enough
Igor Sysoev <igor@sysoev.ru>
parents:
2629
diff
changeset
|
483 of->failed = ngx_file_info_n; |
| 2070 | 484 goto failed; |
| 485 } | |
| 486 | |
|
2460
225fa4abd76f
test ngx_file_info() result, the bug has been introduced in r2070
Igor Sysoev <igor@sysoev.ru>
parents:
2246
diff
changeset
|
487 if (ngx_is_dir(&fi)) { |
|
2069
23930ccd2642
use ngx_file_info() and test uniq if file is already open
Igor Sysoev <igor@sysoev.ru>
parents:
2063
diff
changeset
|
488 goto done; |
| 1453 | 489 } |
| 490 } | |
| 491 | |
| 2072 | 492 if (!of->log) { |
|
3497
ac281bc4c187
use non-blocking open() not to hang on FIFO files, etc.
Igor Sysoev <igor@sysoev.ru>
parents:
3178
diff
changeset
|
493 |
|
ac281bc4c187
use non-blocking open() not to hang on FIFO files, etc.
Igor Sysoev <igor@sysoev.ru>
parents:
3178
diff
changeset
|
494 /* |
|
ac281bc4c187
use non-blocking open() not to hang on FIFO files, etc.
Igor Sysoev <igor@sysoev.ru>
parents:
3178
diff
changeset
|
495 * Use non-blocking open() not to hang on FIFO files, etc. |
|
ac281bc4c187
use non-blocking open() not to hang on FIFO files, etc.
Igor Sysoev <igor@sysoev.ru>
parents:
3178
diff
changeset
|
496 * This flag has no effect on a regular files. |
|
ac281bc4c187
use non-blocking open() not to hang on FIFO files, etc.
Igor Sysoev <igor@sysoev.ru>
parents:
3178
diff
changeset
|
497 */ |
|
ac281bc4c187
use non-blocking open() not to hang on FIFO files, etc.
Igor Sysoev <igor@sysoev.ru>
parents:
3178
diff
changeset
|
498 |
|
4476
94ef9d25ec5b
Changed ngx_open_and_stat_file() to use ngx_str_t.
Andrey Belov <defan@nginx.com>
parents:
4412
diff
changeset
|
499 fd = ngx_open_file(name->data, NGX_FILE_RDONLY|NGX_FILE_NONBLOCK, |
|
3497
ac281bc4c187
use non-blocking open() not to hang on FIFO files, etc.
Igor Sysoev <igor@sysoev.ru>
parents:
3178
diff
changeset
|
500 NGX_FILE_OPEN, 0); |
| 2072 | 501 |
| 502 } else { | |
|
4476
94ef9d25ec5b
Changed ngx_open_and_stat_file() to use ngx_str_t.
Andrey Belov <defan@nginx.com>
parents:
4412
diff
changeset
|
503 fd = ngx_open_file(name->data, NGX_FILE_APPEND, |
|
94ef9d25ec5b
Changed ngx_open_and_stat_file() to use ngx_str_t.
Andrey Belov <defan@nginx.com>
parents:
4412
diff
changeset
|
504 NGX_FILE_CREATE_OR_OPEN, |
|
2629
367b29612a00
Win32 appends synchronized if only FILE_APPEND_DATA and SYNCHRONIZE are set
Igor Sysoev <igor@sysoev.ru>
parents:
2628
diff
changeset
|
505 NGX_FILE_DEFAULT_ACCESS); |
| 2072 | 506 } |
| 1453 | 507 |
| 508 if (fd == NGX_INVALID_FILE) { | |
|
2756
09cab3f8d92e
*) of.test_only to not open file if only stat() is enough
Igor Sysoev <igor@sysoev.ru>
parents:
2629
diff
changeset
|
509 of->failed = ngx_open_file_n; |
|
2069
23930ccd2642
use ngx_file_info() and test uniq if file is already open
Igor Sysoev <igor@sysoev.ru>
parents:
2063
diff
changeset
|
510 goto failed; |
| 1453 | 511 } |
| 512 | |
| 513 if (ngx_fd_info(fd, &fi) == NGX_FILE_ERROR) { | |
| 514 ngx_log_error(NGX_LOG_CRIT, log, ngx_errno, | |
|
4476
94ef9d25ec5b
Changed ngx_open_and_stat_file() to use ngx_str_t.
Andrey Belov <defan@nginx.com>
parents:
4412
diff
changeset
|
515 ngx_fd_info_n " \"%V\" failed", name); |
| 1453 | 516 |
| 517 if (ngx_close_file(fd) == NGX_FILE_ERROR) { | |
| 518 ngx_log_error(NGX_LOG_ALERT, log, ngx_errno, | |
|
4476
94ef9d25ec5b
Changed ngx_open_and_stat_file() to use ngx_str_t.
Andrey Belov <defan@nginx.com>
parents:
4412
diff
changeset
|
519 ngx_close_file_n " \"%V\" failed", name); |
| 1453 | 520 } |
| 521 | |
|
2069
23930ccd2642
use ngx_file_info() and test uniq if file is already open
Igor Sysoev <igor@sysoev.ru>
parents:
2063
diff
changeset
|
522 of->fd = NGX_INVALID_FILE; |
|
23930ccd2642
use ngx_file_info() and test uniq if file is already open
Igor Sysoev <igor@sysoev.ru>
parents:
2063
diff
changeset
|
523 |
| 1453 | 524 return NGX_ERROR; |
| 525 } | |
| 526 | |
| 527 if (ngx_is_dir(&fi)) { | |
| 528 if (ngx_close_file(fd) == NGX_FILE_ERROR) { | |
| 529 ngx_log_error(NGX_LOG_ALERT, log, ngx_errno, | |
|
4476
94ef9d25ec5b
Changed ngx_open_and_stat_file() to use ngx_str_t.
Andrey Belov <defan@nginx.com>
parents:
4412
diff
changeset
|
530 ngx_close_file_n " \"%V\" failed", name); |
| 1453 | 531 } |
| 532 | |
|
2069
23930ccd2642
use ngx_file_info() and test uniq if file is already open
Igor Sysoev <igor@sysoev.ru>
parents:
2063
diff
changeset
|
533 of->fd = NGX_INVALID_FILE; |
|
23930ccd2642
use ngx_file_info() and test uniq if file is already open
Igor Sysoev <igor@sysoev.ru>
parents:
2063
diff
changeset
|
534 |
|
23930ccd2642
use ngx_file_info() and test uniq if file is already open
Igor Sysoev <igor@sysoev.ru>
parents:
2063
diff
changeset
|
535 } else { |
|
23930ccd2642
use ngx_file_info() and test uniq if file is already open
Igor Sysoev <igor@sysoev.ru>
parents:
2063
diff
changeset
|
536 of->fd = fd; |
| 2129 | 537 |
| 3178 | 538 if (of->read_ahead && ngx_file_size(&fi) > NGX_MIN_READ_AHEAD) { |
| 539 if (ngx_read_ahead(fd, of->read_ahead) == NGX_ERROR) { | |
| 540 ngx_log_error(NGX_LOG_ALERT, log, ngx_errno, | |
|
4476
94ef9d25ec5b
Changed ngx_open_and_stat_file() to use ngx_str_t.
Andrey Belov <defan@nginx.com>
parents:
4412
diff
changeset
|
541 ngx_read_ahead_n " \"%V\" failed", name); |
| 3178 | 542 } |
| 543 } | |
| 544 | |
| 2129 | 545 if (of->directio <= ngx_file_size(&fi)) { |
|
3164
b1b1775698d5
uniform ngx_directio_on/off() interface with other file functions
Igor Sysoev <igor@sysoev.ru>
parents:
2934
diff
changeset
|
546 if (ngx_directio_on(fd) == NGX_FILE_ERROR) { |
| 2129 | 547 ngx_log_error(NGX_LOG_ALERT, log, ngx_errno, |
|
4476
94ef9d25ec5b
Changed ngx_open_and_stat_file() to use ngx_str_t.
Andrey Belov <defan@nginx.com>
parents:
4412
diff
changeset
|
548 ngx_directio_on_n " \"%V\" failed", name); |
|
2231
8564129d49b6
*) handle unaligned file part for directio
Igor Sysoev <igor@sysoev.ru>
parents:
2129
diff
changeset
|
549 |
|
8564129d49b6
*) handle unaligned file part for directio
Igor Sysoev <igor@sysoev.ru>
parents:
2129
diff
changeset
|
550 } else { |
|
8564129d49b6
*) handle unaligned file part for directio
Igor Sysoev <igor@sysoev.ru>
parents:
2129
diff
changeset
|
551 of->is_directio = 1; |
| 2129 | 552 } |
| 553 } | |
| 1453 | 554 } |
| 555 | |
|
2069
23930ccd2642
use ngx_file_info() and test uniq if file is already open
Igor Sysoev <igor@sysoev.ru>
parents:
2063
diff
changeset
|
556 done: |
|
23930ccd2642
use ngx_file_info() and test uniq if file is already open
Igor Sysoev <igor@sysoev.ru>
parents:
2063
diff
changeset
|
557 |
| 1453 | 558 of->uniq = ngx_file_uniq(&fi); |
| 559 of->mtime = ngx_file_mtime(&fi); | |
| 560 of->size = ngx_file_size(&fi); | |
|
3899
e7cd13b7f759
Use more precise stat.st_blocks to account cache size on Unix
Igor Sysoev <igor@sysoev.ru>
parents:
3497
diff
changeset
|
561 of->fs_size = ngx_file_fs_size(&fi); |
| 1453 | 562 of->is_dir = ngx_is_dir(&fi); |
| 563 of->is_file = ngx_is_file(&fi); | |
| 564 of->is_link = ngx_is_link(&fi); | |
| 565 of->is_exec = ngx_is_exec(&fi); | |
| 566 | |
| 567 return NGX_OK; | |
|
2069
23930ccd2642
use ngx_file_info() and test uniq if file is already open
Igor Sysoev <igor@sysoev.ru>
parents:
2063
diff
changeset
|
568 |
|
23930ccd2642
use ngx_file_info() and test uniq if file is already open
Igor Sysoev <igor@sysoev.ru>
parents:
2063
diff
changeset
|
569 failed: |
|
23930ccd2642
use ngx_file_info() and test uniq if file is already open
Igor Sysoev <igor@sysoev.ru>
parents:
2063
diff
changeset
|
570 |
|
23930ccd2642
use ngx_file_info() and test uniq if file is already open
Igor Sysoev <igor@sysoev.ru>
parents:
2063
diff
changeset
|
571 of->fd = NGX_INVALID_FILE; |
|
23930ccd2642
use ngx_file_info() and test uniq if file is already open
Igor Sysoev <igor@sysoev.ru>
parents:
2063
diff
changeset
|
572 of->err = ngx_errno; |
|
23930ccd2642
use ngx_file_info() and test uniq if file is already open
Igor Sysoev <igor@sysoev.ru>
parents:
2063
diff
changeset
|
573 |
|
23930ccd2642
use ngx_file_info() and test uniq if file is already open
Igor Sysoev <igor@sysoev.ru>
parents:
2063
diff
changeset
|
574 return NGX_ERROR; |
| 1453 | 575 } |
| 576 | |
| 577 | |
| 1775 | 578 /* |
| 579 * we ignore any possible event setting error and | |
| 580 * fallback to usual periodic file retests | |
| 581 */ | |
| 582 | |
| 583 static void | |
| 584 ngx_open_file_add_event(ngx_open_file_cache_t *cache, | |
| 585 ngx_cached_open_file_t *file, ngx_open_file_info_t *of, ngx_log_t *log) | |
| 586 { | |
| 587 ngx_open_file_cache_event_t *fev; | |
| 588 | |
| 589 if (!(ngx_event_flags & NGX_USE_VNODE_EVENT) | |
| 590 || !of->events | |
| 591 || file->event | |
| 592 || of->fd == NGX_INVALID_FILE | |
| 593 || file->uses < of->min_uses) | |
| 594 { | |
| 595 return; | |
| 596 } | |
| 597 | |
| 2070 | 598 file->use_event = 0; |
| 599 | |
| 1775 | 600 file->event = ngx_calloc(sizeof(ngx_event_t), log); |
| 601 if (file->event== NULL) { | |
| 602 return; | |
| 603 } | |
| 604 | |
| 605 fev = ngx_alloc(sizeof(ngx_open_file_cache_event_t), log); | |
| 606 if (fev == NULL) { | |
| 607 ngx_free(file->event); | |
| 608 file->event = NULL; | |
| 609 return; | |
| 610 } | |
| 611 | |
| 612 fev->fd = of->fd; | |
| 613 fev->file = file; | |
| 614 fev->cache = cache; | |
| 615 | |
| 616 file->event->handler = ngx_open_file_cache_remove; | |
| 617 file->event->data = fev; | |
| 618 | |
| 619 /* | |
| 620 * although vnode event may be called while ngx_cycle->poll | |
| 621 * destruction, however, cleanup procedures are run before any | |
| 622 * memory freeing and events will be canceled. | |
| 623 */ | |
| 624 | |
| 625 file->event->log = ngx_cycle->log; | |
| 626 | |
| 627 if (ngx_add_event(file->event, NGX_VNODE_EVENT, NGX_ONESHOT_EVENT) | |
| 628 != NGX_OK) | |
| 629 { | |
| 630 ngx_free(file->event->data); | |
| 631 ngx_free(file->event); | |
| 632 file->event = NULL; | |
| 633 return; | |
| 634 } | |
| 635 | |
| 636 /* | |
| 2071 | 637 * we do not set file->use_event here because there may be a race |
| 638 * condition: a file may be deleted between opening the file and | |
| 639 * adding event, so we rely upon event notification only after | |
| 640 * one file revalidation on next file access | |
| 1775 | 641 */ |
| 642 | |
| 643 return; | |
| 644 } | |
| 645 | |
| 646 | |
| 1453 | 647 static void |
| 648 ngx_open_file_cleanup(void *data) | |
| 649 { | |
| 650 ngx_open_file_cache_cleanup_t *c = data; | |
| 651 | |
| 652 c->file->count--; | |
| 653 | |
| 1772 | 654 ngx_close_cached_file(c->cache, c->file, c->min_uses, c->log); |
| 1453 | 655 |
| 656 /* drop one or two expired open files */ | |
| 657 ngx_expire_old_cached_files(c->cache, 1, c->log); | |
| 658 } | |
| 659 | |
| 660 | |
| 661 static void | |
| 662 ngx_close_cached_file(ngx_open_file_cache_t *cache, | |
| 1772 | 663 ngx_cached_open_file_t *file, ngx_uint_t min_uses, ngx_log_t *log) |
| 1453 | 664 { |
| 1772 | 665 ngx_log_debug5(NGX_LOG_DEBUG_CORE, log, 0, |
| 666 "close cached open file: %s, fd:%d, c:%d, u:%d, %d", | |
| 667 file->name, file->fd, file->count, file->uses, file->close); | |
| 1453 | 668 |
| 669 if (!file->close) { | |
| 670 | |
| 671 file->accessed = ngx_time(); | |
| 672 | |
| 1765 | 673 ngx_queue_remove(&file->queue); |
| 1453 | 674 |
| 1765 | 675 ngx_queue_insert_head(&cache->expire_queue, &file->queue); |
| 1453 | 676 |
| 1772 | 677 if (file->uses >= min_uses || file->count) { |
| 678 return; | |
| 679 } | |
| 1453 | 680 } |
| 681 | |
| 1775 | 682 ngx_open_file_del_event(file); |
| 1453 | 683 |
| 684 if (file->count) { | |
| 685 return; | |
| 686 } | |
| 687 | |
| 1772 | 688 if (file->fd != NGX_INVALID_FILE) { |
| 689 | |
| 690 if (ngx_close_file(file->fd) == NGX_FILE_ERROR) { | |
| 691 ngx_log_error(NGX_LOG_ALERT, log, ngx_errno, | |
| 692 ngx_close_file_n " \"%s\" failed", file->name); | |
| 693 } | |
| 694 | |
| 695 file->fd = NGX_INVALID_FILE; | |
| 696 } | |
| 697 | |
| 698 if (!file->close) { | |
| 699 return; | |
| 1453 | 700 } |
| 701 | |
| 702 ngx_free(file->name); | |
| 703 ngx_free(file); | |
| 704 } | |
| 705 | |
| 706 | |
| 707 static void | |
| 1775 | 708 ngx_open_file_del_event(ngx_cached_open_file_t *file) |
| 709 { | |
| 710 if (file->event == NULL) { | |
| 711 return; | |
| 712 } | |
| 713 | |
| 714 (void) ngx_del_event(file->event, NGX_VNODE_EVENT, | |
| 715 file->count ? NGX_FLUSH_EVENT : NGX_CLOSE_EVENT); | |
| 716 | |
| 717 ngx_free(file->event->data); | |
| 718 ngx_free(file->event); | |
| 719 file->event = NULL; | |
| 720 file->use_event = 0; | |
| 721 } | |
| 722 | |
| 723 | |
| 724 static void | |
| 1453 | 725 ngx_expire_old_cached_files(ngx_open_file_cache_t *cache, ngx_uint_t n, |
| 726 ngx_log_t *log) | |
| 727 { | |
| 728 time_t now; | |
| 1765 | 729 ngx_queue_t *q; |
| 1453 | 730 ngx_cached_open_file_t *file; |
| 731 | |
| 732 now = ngx_time(); | |
| 733 | |
| 734 /* | |
| 735 * n == 1 deletes one or two inactive files | |
| 736 * n == 0 deletes least recently used file by force | |
| 737 * and one or two inactive files | |
| 738 */ | |
| 739 | |
| 740 while (n < 3) { | |
| 741 | |
| 1765 | 742 if (ngx_queue_empty(&cache->expire_queue)) { |
| 1453 | 743 return; |
| 744 } | |
| 745 | |
| 1765 | 746 q = ngx_queue_last(&cache->expire_queue); |
| 747 | |
| 748 file = ngx_queue_data(q, ngx_cached_open_file_t, queue); | |
| 749 | |
| 1453 | 750 if (n++ != 0 && now - file->accessed <= cache->inactive) { |
| 751 return; | |
| 752 } | |
| 753 | |
| 1765 | 754 ngx_queue_remove(q); |
| 1453 | 755 |
| 756 ngx_rbtree_delete(&cache->rbtree, &file->node); | |
| 757 | |
| 758 cache->current--; | |
| 759 | |
| 760 ngx_log_debug1(NGX_LOG_DEBUG_CORE, log, 0, | |
| 761 "expire cached open file: %s", file->name); | |
| 762 | |
| 763 if (!file->err && !file->is_dir) { | |
| 764 file->close = 1; | |
| 1772 | 765 ngx_close_cached_file(cache, file, 0, log); |
| 1453 | 766 |
| 767 } else { | |
| 768 ngx_free(file->name); | |
| 769 ngx_free(file); | |
| 770 } | |
| 771 } | |
| 772 } | |
| 773 | |
| 774 | |
| 775 static void | |
| 776 ngx_open_file_cache_rbtree_insert_value(ngx_rbtree_node_t *temp, | |
| 777 ngx_rbtree_node_t *node, ngx_rbtree_node_t *sentinel) | |
| 778 { | |
| 779 ngx_rbtree_node_t **p; | |
| 780 ngx_cached_open_file_t *file, *file_temp; | |
| 781 | |
| 782 for ( ;; ) { | |
| 783 | |
| 784 if (node->key < temp->key) { | |
| 785 | |
| 786 p = &temp->left; | |
| 787 | |
| 788 } else if (node->key > temp->key) { | |
| 789 | |
| 790 p = &temp->right; | |
| 791 | |
| 792 } else { /* node->key == temp->key */ | |
| 793 | |
| 794 file = (ngx_cached_open_file_t *) node; | |
| 795 file_temp = (ngx_cached_open_file_t *) temp; | |
| 796 | |
| 797 p = (ngx_strcmp(file->name, file_temp->name) < 0) | |
| 798 ? &temp->left : &temp->right; | |
| 799 } | |
| 800 | |
| 801 if (*p == sentinel) { | |
| 802 break; | |
| 803 } | |
| 804 | |
| 805 temp = *p; | |
| 806 } | |
| 807 | |
| 808 *p = node; | |
| 809 node->parent = temp; | |
| 810 node->left = sentinel; | |
| 811 node->right = sentinel; | |
| 812 ngx_rbt_red(node); | |
| 813 } | |
| 814 | |
| 815 | |
| 1775 | 816 static ngx_cached_open_file_t * |
| 817 ngx_open_file_lookup(ngx_open_file_cache_t *cache, ngx_str_t *name, | |
| 818 uint32_t hash) | |
| 819 { | |
| 820 ngx_int_t rc; | |
| 821 ngx_rbtree_node_t *node, *sentinel; | |
| 822 ngx_cached_open_file_t *file; | |
| 823 | |
| 824 node = cache->rbtree.root; | |
| 825 sentinel = cache->rbtree.sentinel; | |
| 826 | |
| 827 while (node != sentinel) { | |
| 828 | |
| 829 if (hash < node->key) { | |
| 830 node = node->left; | |
| 831 continue; | |
| 832 } | |
| 833 | |
| 834 if (hash > node->key) { | |
| 835 node = node->right; | |
| 836 continue; | |
| 837 } | |
| 838 | |
| 839 /* hash == node->key */ | |
| 840 | |
| 841 do { | |
| 842 file = (ngx_cached_open_file_t *) node; | |
| 843 | |
| 844 rc = ngx_strcmp(name->data, file->name); | |
| 845 | |
| 846 if (rc == 0) { | |
| 847 return file; | |
| 848 } | |
| 849 | |
| 850 node = (rc < 0) ? node->left : node->right; | |
| 851 | |
| 852 } while (node != sentinel && hash == node->key); | |
| 853 | |
| 854 break; | |
| 855 } | |
| 856 | |
| 857 return NULL; | |
| 858 } | |
| 859 | |
| 860 | |
| 1453 | 861 static void |
| 862 ngx_open_file_cache_remove(ngx_event_t *ev) | |
| 863 { | |
| 864 ngx_cached_open_file_t *file; | |
| 865 ngx_open_file_cache_event_t *fev; | |
| 866 | |
| 867 fev = ev->data; | |
| 868 file = fev->file; | |
| 869 | |
| 1765 | 870 ngx_queue_remove(&file->queue); |
| 1453 | 871 |
| 872 ngx_rbtree_delete(&fev->cache->rbtree, &file->node); | |
| 873 | |
| 874 fev->cache->current--; | |
| 875 | |
| 876 /* NGX_ONESHOT_EVENT was already deleted */ | |
| 877 file->event = NULL; | |
| 2070 | 878 file->use_event = 0; |
| 1453 | 879 |
| 880 file->close = 1; | |
| 881 | |
| 1772 | 882 ngx_close_cached_file(fev->cache, file, 0, ev->log); |
| 1453 | 883 |
| 884 /* free memory only when fev->cache and fev->file are already not needed */ | |
| 885 | |
| 886 ngx_free(ev->data); | |
| 887 ngx_free(ev); | |
| 888 } |