Mercurial > hg > nginx
annotate src/core/ngx_open_file_cache.c @ 1766:111eb827ed44
fix the previous commit
| author | Igor Sysoev <igor@sysoev.ru> |
|---|---|
| date | Fri, 21 Dec 2007 16:19:14 +0000 |
| parents | b0cbe16febaf |
| children | c42431762903 |
| rev | line source |
|---|---|
| 1453 | 1 |
| 2 /* | |
| 3 * Copyright (C) Igor Sysoev | |
| 4 */ | |
| 5 | |
| 6 | |
| 7 #include <ngx_config.h> | |
| 8 #include <ngx_core.h> | |
| 9 #include <ngx_event.h> | |
| 10 | |
| 11 | |
| 12 /* | |
| 13 * open file cache caches | |
| 14 * open file handles with stat() info; | |
| 15 * directories stat() info; | |
| 16 * files and directories errors: not found, access denied, etc. | |
| 17 */ | |
| 18 | |
| 19 | |
| 20 static void ngx_open_file_cache_cleanup(void *data); | |
| 21 static void ngx_open_file_cleanup(void *data); | |
| 22 static void ngx_close_cached_file(ngx_open_file_cache_t *cache, | |
| 23 ngx_cached_open_file_t *file, ngx_log_t *log); | |
| 24 static ngx_int_t ngx_open_and_stat_file(u_char *name, ngx_open_file_info_t *of, | |
| 25 ngx_log_t *log); | |
| 26 static void ngx_expire_old_cached_files(ngx_open_file_cache_t *cache, | |
| 27 ngx_uint_t n, ngx_log_t *log); | |
| 28 static void ngx_open_file_cache_rbtree_insert_value(ngx_rbtree_node_t *temp, | |
| 29 ngx_rbtree_node_t *node, ngx_rbtree_node_t *sentinel); | |
| 30 static void ngx_open_file_cache_remove(ngx_event_t *ev); | |
| 31 | |
| 32 | |
| 33 ngx_open_file_cache_t * | |
| 34 ngx_open_file_cache_init(ngx_pool_t *pool, ngx_uint_t max, time_t inactive) | |
| 35 { | |
| 36 ngx_pool_cleanup_t *cln; | |
| 37 ngx_open_file_cache_t *cache; | |
| 38 | |
| 39 cache = ngx_palloc(pool, sizeof(ngx_open_file_cache_t)); | |
| 40 if (cache == NULL) { | |
| 41 return NULL; | |
| 42 } | |
| 43 | |
| 1761 | 44 ngx_rbtree_init(&cache->rbtree, &cache->sentinel, |
|
1743
4fc402c3ec73
optimize rbtree initialization and insert
Igor Sysoev <igor@sysoev.ru>
parents:
1458
diff
changeset
|
45 ngx_open_file_cache_rbtree_insert_value); |
| 1453 | 46 |
| 1765 | 47 ngx_queue_init(&cache->expire_queue); |
| 48 | |
| 1453 | 49 cache->current = 0; |
| 50 cache->max = max; | |
| 51 cache->inactive = inactive; | |
| 52 | |
| 53 cln = ngx_pool_cleanup_add(pool, 0); | |
| 54 if (cln == NULL) { | |
| 55 return NULL; | |
| 56 } | |
| 57 | |
| 58 cln->handler = ngx_open_file_cache_cleanup; | |
| 59 cln->data = cache; | |
| 60 | |
| 61 return cache; | |
| 62 } | |
| 63 | |
| 64 | |
| 65 static void | |
| 66 ngx_open_file_cache_cleanup(void *data) | |
| 67 { | |
| 68 ngx_open_file_cache_t *cache = data; | |
| 69 | |
| 1765 | 70 ngx_queue_t *q; |
| 1453 | 71 ngx_cached_open_file_t *file; |
| 72 | |
| 73 ngx_log_debug0(NGX_LOG_DEBUG_CORE, ngx_cycle->log, 0, | |
| 74 "open file cache cleanup"); | |
| 75 | |
| 76 for ( ;; ) { | |
| 77 | |
| 1765 | 78 if (ngx_queue_empty(&cache->expire_queue)) { |
| 1766 | 79 break; |
| 1453 | 80 } |
| 81 | |
| 1765 | 82 q = ngx_queue_last(&cache->expire_queue); |
| 83 | |
| 84 file = ngx_queue_data(q, ngx_cached_open_file_t, queue); | |
| 85 | |
| 86 ngx_queue_remove(q); | |
| 1453 | 87 |
| 88 ngx_rbtree_delete(&cache->rbtree, &file->node); | |
| 89 | |
| 90 cache->current--; | |
| 91 | |
| 92 ngx_log_debug1(NGX_LOG_DEBUG_CORE, ngx_cycle->log, 0, | |
| 93 "delete cached open file: %s", file->name); | |
| 94 | |
| 95 if (!file->err && !file->is_dir) { | |
| 96 file->close = 1; | |
| 97 file->count = 0; | |
| 98 ngx_close_cached_file(cache, file, ngx_cycle->log); | |
| 99 | |
| 100 } else { | |
| 101 ngx_free(file->name); | |
| 102 ngx_free(file); | |
| 103 } | |
| 104 } | |
| 105 | |
| 106 if (cache->current) { | |
| 107 ngx_log_error(NGX_LOG_ALERT, ngx_cycle->log, 0, | |
| 108 "%d items still leave in open file cache", | |
| 109 cache->current); | |
| 110 } | |
| 111 | |
| 112 if (cache->rbtree.root != cache->rbtree.sentinel) { | |
| 113 ngx_log_error(NGX_LOG_ALERT, ngx_cycle->log, 0, | |
| 114 "rbtree still is not empty in open file cache"); | |
| 115 | |
| 116 } | |
| 117 } | |
| 118 | |
| 119 | |
| 120 ngx_int_t | |
| 121 ngx_open_cached_file(ngx_open_file_cache_t *cache, ngx_str_t *name, | |
| 122 ngx_open_file_info_t *of, ngx_pool_t *pool) | |
| 123 { | |
| 124 time_t now; | |
| 125 uint32_t hash; | |
| 126 ngx_int_t rc; | |
| 127 ngx_rbtree_node_t *node, *sentinel; | |
| 128 ngx_pool_cleanup_t *cln; | |
| 129 ngx_cached_open_file_t *file; | |
| 130 ngx_pool_cleanup_file_t *clnf; | |
| 131 ngx_open_file_cache_event_t *fev; | |
| 132 ngx_open_file_cache_cleanup_t *ofcln; | |
| 133 | |
| 134 of->err = 0; | |
| 135 | |
| 136 if (cache == NULL) { | |
| 137 | |
| 138 cln = ngx_pool_cleanup_add(pool, sizeof(ngx_pool_cleanup_file_t)); | |
| 139 if (cln == NULL) { | |
| 140 return NGX_ERROR; | |
| 141 } | |
| 142 | |
| 143 rc = ngx_open_and_stat_file(name->data, of, pool->log); | |
| 144 | |
| 145 if (rc == NGX_OK && !of->is_dir) { | |
| 146 cln->handler = ngx_pool_cleanup_file; | |
| 147 clnf = cln->data; | |
| 148 | |
| 149 clnf->fd = of->fd; | |
| 150 clnf->name = name->data; | |
| 151 clnf->log = pool->log; | |
| 152 } | |
| 153 | |
| 154 return rc; | |
| 155 } | |
| 156 | |
| 157 cln = ngx_pool_cleanup_add(pool, sizeof(ngx_open_file_cache_cleanup_t)); | |
| 158 if (cln == NULL) { | |
| 159 return NGX_ERROR; | |
| 160 } | |
| 161 | |
| 162 hash = ngx_crc32_long(name->data, name->len); | |
| 163 | |
| 164 node = cache->rbtree.root; | |
| 165 sentinel = cache->rbtree.sentinel; | |
| 166 | |
| 167 now = ngx_time(); | |
| 168 | |
| 169 while (node != sentinel) { | |
| 170 | |
| 171 if (hash < node->key) { | |
| 172 node = node->left; | |
| 173 continue; | |
| 174 } | |
| 175 | |
| 176 if (hash > node->key) { | |
| 177 node = node->right; | |
| 178 continue; | |
| 179 } | |
| 180 | |
| 181 /* hash == node->key */ | |
| 182 | |
| 183 do { | |
| 184 file = (ngx_cached_open_file_t *) node; | |
| 185 | |
| 186 rc = ngx_strcmp(name->data, file->name); | |
| 187 | |
| 188 if (rc == 0) { | |
| 189 | |
| 1765 | 190 ngx_queue_remove(&file->queue); |
| 1453 | 191 |
| 192 if (file->event || now - file->created < of->retest) { | |
| 193 if (file->err == 0) { | |
| 194 of->fd = file->fd; | |
| 195 of->uniq = file->uniq; | |
| 196 of->mtime = file->mtime; | |
| 197 of->size = file->size; | |
| 198 | |
| 199 of->is_dir = file->is_dir; | |
| 200 of->is_file = file->is_file; | |
| 201 of->is_link = file->is_link; | |
| 202 of->is_exec = file->is_exec; | |
| 203 | |
| 204 if (!file->is_dir) { | |
| 205 file->count++; | |
| 206 } | |
| 207 | |
| 208 } else { | |
| 209 of->err = file->err; | |
| 210 } | |
| 211 | |
| 212 goto found; | |
| 213 } | |
| 214 | |
| 215 ngx_log_debug4(NGX_LOG_DEBUG_CORE, pool->log, 0, | |
| 216 "retest open file: %s, fd:%d, c:%d, e:%d", | |
| 217 file->name, file->fd, file->count, file->err); | |
| 218 | |
| 219 if (file->is_dir) { | |
| 220 | |
| 221 /* | |
| 222 * chances that directory became file are very small | |
| 223 * so test_dir flag allows to use a single ngx_file_info() | |
| 224 * syscall instead of three syscalls | |
| 225 */ | |
| 226 | |
| 227 of->test_dir = 1; | |
| 228 } | |
| 229 | |
| 230 rc = ngx_open_and_stat_file(name->data, of, pool->log); | |
| 231 | |
| 232 if (rc != NGX_OK && (of->err == 0 || !of->errors)) { | |
| 233 goto failed; | |
| 234 } | |
| 235 | |
| 236 if (of->is_dir) { | |
| 237 if (file->is_dir || file->err) { | |
| 238 goto update; | |
| 239 } | |
| 240 | |
| 241 /* file became directory */ | |
| 242 | |
| 243 } else if (of->err == 0) { /* file */ | |
| 244 | |
| 245 if (file->is_dir || file->err) { | |
| 246 goto update; | |
| 247 } | |
| 248 | |
| 249 if (of->uniq == file->uniq | |
| 250 && of->mtime == file->mtime | |
| 251 && of->size == file->size) | |
| 252 { | |
| 253 if (ngx_close_file(of->fd) == NGX_FILE_ERROR) { | |
| 254 ngx_log_error(NGX_LOG_ALERT, pool->log, ngx_errno, | |
| 255 ngx_close_file_n " \"%s\" failed", | |
| 256 name->data); | |
| 257 } | |
| 258 | |
| 259 of->fd = file->fd; | |
| 260 file->count++; | |
| 261 | |
| 262 goto renew; | |
| 263 } | |
| 264 | |
| 265 /* file was changed */ | |
| 266 | |
| 267 } else { /* error to cache */ | |
| 268 | |
| 269 if (file->err || file->is_dir) { | |
| 270 goto update; | |
| 271 } | |
| 272 | |
| 273 /* file was removed, etc. */ | |
| 274 } | |
| 275 | |
| 276 if (file->count == 0) { | |
| 277 if (ngx_close_file(file->fd) == NGX_FILE_ERROR) { | |
| 278 ngx_log_error(NGX_LOG_ALERT, pool->log, ngx_errno, | |
| 279 ngx_close_file_n " \"%s\" failed", | |
| 280 name->data); | |
| 281 } | |
| 282 | |
| 283 goto update; | |
| 284 } | |
| 285 | |
| 286 ngx_rbtree_delete(&cache->rbtree, &file->node); | |
| 287 | |
| 288 cache->current--; | |
| 289 | |
| 290 file->close = 1; | |
| 291 | |
| 292 goto create; | |
| 293 } | |
| 294 | |
| 295 node = (rc < 0) ? node->left : node->right; | |
| 296 | |
| 297 } while (node != sentinel && hash == node->key); | |
| 298 | |
| 299 break; | |
| 300 } | |
| 301 | |
| 302 /* not found */ | |
| 303 | |
| 304 file = NULL; | |
| 305 | |
| 306 rc = ngx_open_and_stat_file(name->data, of, pool->log); | |
| 307 | |
| 308 if (rc != NGX_OK && (of->err == 0 || !of->errors)) { | |
| 309 goto failed; | |
| 310 } | |
| 311 | |
| 312 create: | |
| 313 | |
| 314 if (cache->current >= cache->max) { | |
| 315 ngx_expire_old_cached_files(cache, 0, pool->log); | |
| 316 } | |
| 317 | |
| 318 file = ngx_alloc(sizeof(ngx_cached_open_file_t), pool->log); | |
| 319 | |
| 320 if (file == NULL) { | |
| 321 goto failed; | |
| 322 } | |
| 323 | |
| 324 file->name = ngx_alloc(name->len + 1, pool->log); | |
| 325 | |
| 326 if (file->name == NULL) { | |
| 327 ngx_free(file); | |
| 328 file = NULL; | |
| 329 goto failed; | |
| 330 } | |
| 331 | |
| 332 ngx_cpystrn(file->name, name->data, name->len + 1); | |
| 333 | |
| 334 file->node.key = hash; | |
| 335 | |
| 336 ngx_rbtree_insert(&cache->rbtree, &file->node); | |
| 337 | |
| 338 cache->current++; | |
| 339 | |
| 340 file->count = 0; | |
| 341 | |
| 342 update: | |
| 343 | |
|
1458
614090b26fbf
test the most relevant condition first
Igor Sysoev <igor@sysoev.ru>
parents:
1457
diff
changeset
|
344 if (of->events |
|
614090b26fbf
test the most relevant condition first
Igor Sysoev <igor@sysoev.ru>
parents:
1457
diff
changeset
|
345 && (ngx_event_flags & NGX_USE_VNODE_EVENT) |
| 1457 | 346 && of->fd != NGX_INVALID_FILE) |
| 347 { | |
| 1453 | 348 file->event = ngx_calloc(sizeof(ngx_event_t), pool->log); |
| 349 if (file->event== NULL) { | |
| 350 goto failed; | |
| 351 } | |
| 352 | |
| 353 fev = ngx_alloc(sizeof(ngx_open_file_cache_event_t), pool->log); | |
| 354 if (fev == NULL) { | |
| 355 goto failed; | |
| 356 } | |
| 357 | |
| 358 fev->fd = of->fd; | |
| 359 fev->file = file; | |
| 360 fev->cache = cache; | |
| 361 | |
| 362 file->event->handler = ngx_open_file_cache_remove; | |
| 363 file->event->data = fev; | |
| 364 | |
| 365 /* | |
| 366 * although vnode event may be called while ngx_cycle->poll | |
| 367 * destruction; however, cleanup procedures are run before any | |
| 368 * memory freeing and events will be canceled. | |
| 369 */ | |
| 370 | |
| 371 file->event->log = ngx_cycle->log; | |
| 372 | |
| 373 if (ngx_add_event(file->event, NGX_VNODE_EVENT, NGX_ONESHOT_EVENT) | |
| 374 != NGX_OK) | |
| 375 { | |
| 376 ngx_free(file->event->data); | |
| 377 ngx_free(file->event); | |
| 378 goto failed; | |
| 379 } | |
| 380 | |
| 381 } else { | |
| 382 file->event = NULL; | |
| 383 } | |
| 384 | |
| 385 file->fd = of->fd; | |
| 386 file->err = of->err; | |
| 387 | |
| 388 if (of->err == 0) { | |
| 389 file->uniq = of->uniq; | |
| 390 file->mtime = of->mtime; | |
| 391 file->size = of->size; | |
| 392 | |
| 393 file->close = 0; | |
| 394 | |
| 395 file->is_dir = of->is_dir; | |
| 396 file->is_file = of->is_file; | |
| 397 file->is_link = of->is_link; | |
| 398 file->is_exec = of->is_exec; | |
| 399 | |
| 400 if (!of->is_dir) { | |
| 401 file->count++; | |
| 402 } | |
| 403 } | |
| 404 | |
| 405 renew: | |
| 406 | |
| 407 file->created = now; | |
| 408 | |
| 409 found: | |
| 410 | |
| 411 file->accessed = now; | |
| 412 | |
| 1765 | 413 ngx_queue_insert_head(&cache->expire_queue, &file->queue); |
| 1453 | 414 |
| 415 ngx_log_debug4(NGX_LOG_DEBUG_CORE, pool->log, 0, | |
| 416 "cached open file: %s, fd:%d, c:%d, e:%d", | |
| 417 file->name, file->fd, file->count, file->err); | |
| 418 | |
| 419 if (of->err == 0) { | |
| 420 | |
| 421 if (!of->is_dir) { | |
| 422 cln->handler = ngx_open_file_cleanup; | |
| 423 ofcln = cln->data; | |
| 424 | |
| 425 ofcln->cache = cache; | |
| 426 ofcln->file = file; | |
| 427 ofcln->log = pool->log; | |
| 428 } | |
| 429 | |
| 430 return NGX_OK; | |
| 431 } | |
| 432 | |
| 433 return NGX_ERROR; | |
| 434 | |
| 435 failed: | |
| 436 | |
| 437 if (file && file->count == 0) { | |
| 438 ngx_rbtree_delete(&cache->rbtree, &file->node); | |
| 439 | |
| 440 cache->current--; | |
| 441 | |
| 442 if (ngx_close_file(file->fd) == NGX_FILE_ERROR) { | |
| 443 ngx_log_error(NGX_LOG_ALERT, pool->log, ngx_errno, | |
| 444 ngx_close_file_n " \"%s\" failed", file->name); | |
| 445 } | |
| 446 | |
| 447 ngx_free(file->name); | |
| 448 ngx_free(file); | |
| 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, | |
| 454 ngx_close_file_n " \"%s\" failed", name->data); | |
| 455 } | |
| 456 } | |
| 457 | |
| 458 return NGX_ERROR; | |
| 459 } | |
| 460 | |
| 461 | |
| 462 static ngx_int_t | |
| 463 ngx_open_and_stat_file(u_char *name, ngx_open_file_info_t *of, ngx_log_t *log) | |
| 464 { | |
| 465 ngx_fd_t fd; | |
| 466 ngx_file_info_t fi; | |
| 467 | |
| 468 of->fd = NGX_INVALID_FILE; | |
| 469 | |
| 470 if (of->test_dir) { | |
| 471 | |
| 472 if (ngx_file_info(name, &fi) == -1) { | |
| 473 of->err = ngx_errno; | |
| 474 | |
| 475 return NGX_ERROR; | |
| 476 } | |
| 477 | |
| 478 of->uniq = ngx_file_uniq(&fi); | |
| 479 of->mtime = ngx_file_mtime(&fi); | |
| 480 of->size = ngx_file_size(&fi); | |
| 481 of->is_dir = ngx_is_dir(&fi); | |
| 482 of->is_file = ngx_is_file(&fi); | |
| 483 of->is_link = ngx_is_link(&fi); | |
| 484 of->is_exec = ngx_is_exec(&fi); | |
| 485 | |
| 486 if (of->is_dir) { | |
| 487 return NGX_OK; | |
| 488 } | |
| 489 } | |
| 490 | |
| 491 fd = ngx_open_file(name, NGX_FILE_RDONLY, NGX_FILE_OPEN, 0); | |
| 492 | |
| 493 if (fd == NGX_INVALID_FILE) { | |
| 494 of->err = ngx_errno; | |
| 495 return NGX_ERROR; | |
| 496 } | |
| 497 | |
| 498 if (ngx_fd_info(fd, &fi) == NGX_FILE_ERROR) { | |
| 499 ngx_log_error(NGX_LOG_CRIT, log, ngx_errno, | |
| 500 ngx_fd_info_n " \"%s\" failed", name); | |
| 501 | |
| 502 if (ngx_close_file(fd) == NGX_FILE_ERROR) { | |
| 503 ngx_log_error(NGX_LOG_ALERT, log, ngx_errno, | |
| 504 ngx_close_file_n " \"%s\" failed", name); | |
| 505 } | |
| 506 | |
| 507 return NGX_ERROR; | |
| 508 } | |
| 509 | |
| 510 if (ngx_is_dir(&fi)) { | |
| 511 if (ngx_close_file(fd) == NGX_FILE_ERROR) { | |
| 512 ngx_log_error(NGX_LOG_ALERT, log, ngx_errno, | |
| 513 ngx_close_file_n " \"%s\" failed", name); | |
| 514 } | |
| 515 | |
| 516 fd = NGX_INVALID_FILE; | |
| 517 } | |
| 518 | |
| 519 of->fd = fd; | |
| 520 of->uniq = ngx_file_uniq(&fi); | |
| 521 of->mtime = ngx_file_mtime(&fi); | |
| 522 of->size = ngx_file_size(&fi); | |
| 523 of->is_dir = ngx_is_dir(&fi); | |
| 524 of->is_file = ngx_is_file(&fi); | |
| 525 of->is_link = ngx_is_link(&fi); | |
| 526 of->is_exec = ngx_is_exec(&fi); | |
| 527 | |
| 528 return NGX_OK; | |
| 529 } | |
| 530 | |
| 531 | |
| 532 static void | |
| 533 ngx_open_file_cleanup(void *data) | |
| 534 { | |
| 535 ngx_open_file_cache_cleanup_t *c = data; | |
| 536 | |
| 537 c->file->count--; | |
| 538 | |
| 539 ngx_close_cached_file(c->cache, c->file, c->log); | |
| 540 | |
| 541 /* drop one or two expired open files */ | |
| 542 ngx_expire_old_cached_files(c->cache, 1, c->log); | |
| 543 } | |
| 544 | |
| 545 | |
| 546 static void | |
| 547 ngx_close_cached_file(ngx_open_file_cache_t *cache, | |
| 548 ngx_cached_open_file_t *file, ngx_log_t *log) | |
| 549 { | |
| 550 ngx_log_debug4(NGX_LOG_DEBUG_CORE, log, 0, | |
| 551 "close cached open file: %s, fd:%d, c:%d, %d", | |
| 552 file->name, file->fd, file->count, file->close); | |
| 553 | |
| 554 if (!file->close) { | |
| 555 | |
| 556 file->accessed = ngx_time(); | |
| 557 | |
| 1765 | 558 ngx_queue_remove(&file->queue); |
| 1453 | 559 |
| 1765 | 560 ngx_queue_insert_head(&cache->expire_queue, &file->queue); |
| 1453 | 561 |
| 562 return; | |
| 563 } | |
| 564 | |
| 565 if (file->event) { | |
| 566 (void) ngx_del_event(file->event, NGX_VNODE_EVENT, | |
| 567 file->count ? NGX_FLUSH_EVENT : NGX_CLOSE_EVENT); | |
| 568 | |
| 569 ngx_free(file->event->data); | |
| 570 ngx_free(file->event); | |
| 571 file->event = NULL; | |
| 572 } | |
| 573 | |
| 574 if (file->count) { | |
| 575 return; | |
| 576 } | |
| 577 | |
| 578 if (ngx_close_file(file->fd) == NGX_FILE_ERROR) { | |
| 579 ngx_log_error(NGX_LOG_ALERT, log, ngx_errno, | |
| 580 ngx_close_file_n " \"%s\" failed", file->name); | |
| 581 } | |
| 582 | |
| 583 ngx_free(file->name); | |
| 584 ngx_free(file); | |
| 585 } | |
| 586 | |
| 587 | |
| 588 static void | |
| 589 ngx_expire_old_cached_files(ngx_open_file_cache_t *cache, ngx_uint_t n, | |
| 590 ngx_log_t *log) | |
| 591 { | |
| 592 time_t now; | |
| 1765 | 593 ngx_queue_t *q; |
| 1453 | 594 ngx_cached_open_file_t *file; |
| 595 | |
| 596 now = ngx_time(); | |
| 597 | |
| 598 /* | |
| 599 * n == 1 deletes one or two inactive files | |
| 600 * n == 0 deletes least recently used file by force | |
| 601 * and one or two inactive files | |
| 602 */ | |
| 603 | |
| 604 while (n < 3) { | |
| 605 | |
| 1765 | 606 if (ngx_queue_empty(&cache->expire_queue)) { |
| 1453 | 607 return; |
| 608 } | |
| 609 | |
| 1765 | 610 q = ngx_queue_last(&cache->expire_queue); |
| 611 | |
| 612 file = ngx_queue_data(q, ngx_cached_open_file_t, queue); | |
| 613 | |
| 1453 | 614 if (n++ != 0 && now - file->accessed <= cache->inactive) { |
| 615 return; | |
| 616 } | |
| 617 | |
| 1765 | 618 ngx_queue_remove(q); |
| 1453 | 619 |
| 620 ngx_rbtree_delete(&cache->rbtree, &file->node); | |
| 621 | |
| 622 cache->current--; | |
| 623 | |
| 624 ngx_log_debug1(NGX_LOG_DEBUG_CORE, log, 0, | |
| 625 "expire cached open file: %s", file->name); | |
| 626 | |
| 627 if (!file->err && !file->is_dir) { | |
| 628 file->close = 1; | |
| 629 ngx_close_cached_file(cache, file, log); | |
| 630 | |
| 631 } else { | |
| 632 ngx_free(file->name); | |
| 633 ngx_free(file); | |
| 634 } | |
| 635 } | |
| 636 } | |
| 637 | |
| 638 | |
| 639 static void | |
| 640 ngx_open_file_cache_rbtree_insert_value(ngx_rbtree_node_t *temp, | |
| 641 ngx_rbtree_node_t *node, ngx_rbtree_node_t *sentinel) | |
| 642 { | |
| 643 ngx_rbtree_node_t **p; | |
| 644 ngx_cached_open_file_t *file, *file_temp; | |
| 645 | |
| 646 for ( ;; ) { | |
| 647 | |
| 648 if (node->key < temp->key) { | |
| 649 | |
| 650 p = &temp->left; | |
| 651 | |
| 652 } else if (node->key > temp->key) { | |
| 653 | |
| 654 p = &temp->right; | |
| 655 | |
| 656 } else { /* node->key == temp->key */ | |
| 657 | |
| 658 file = (ngx_cached_open_file_t *) node; | |
| 659 file_temp = (ngx_cached_open_file_t *) temp; | |
| 660 | |
| 661 p = (ngx_strcmp(file->name, file_temp->name) < 0) | |
| 662 ? &temp->left : &temp->right; | |
| 663 } | |
| 664 | |
| 665 if (*p == sentinel) { | |
| 666 break; | |
| 667 } | |
| 668 | |
| 669 temp = *p; | |
| 670 } | |
| 671 | |
| 672 *p = node; | |
| 673 node->parent = temp; | |
| 674 node->left = sentinel; | |
| 675 node->right = sentinel; | |
| 676 ngx_rbt_red(node); | |
| 677 } | |
| 678 | |
| 679 | |
| 680 static void | |
| 681 ngx_open_file_cache_remove(ngx_event_t *ev) | |
| 682 { | |
| 683 ngx_cached_open_file_t *file; | |
| 684 ngx_open_file_cache_event_t *fev; | |
| 685 | |
| 686 fev = ev->data; | |
| 687 file = fev->file; | |
| 688 | |
| 1765 | 689 ngx_queue_remove(&file->queue); |
| 1453 | 690 |
| 691 ngx_rbtree_delete(&fev->cache->rbtree, &file->node); | |
| 692 | |
| 693 fev->cache->current--; | |
| 694 | |
| 695 /* NGX_ONESHOT_EVENT was already deleted */ | |
| 696 file->event = NULL; | |
| 697 | |
| 698 file->close = 1; | |
| 699 | |
| 700 ngx_close_cached_file(fev->cache, file, ev->log); | |
| 701 | |
| 702 /* free memory only when fev->cache and fev->file are already not needed */ | |
| 703 | |
| 704 ngx_free(ev->data); | |
| 705 ngx_free(ev); | |
| 706 } |