Mercurial > hg > nginx
annotate src/core/ngx_open_file_cache.c @ 1761:1c4b231ba90c
embed sentinel
author | Igor Sysoev <igor@sysoev.ru> |
---|---|
date | Thu, 20 Dec 2007 21:29:52 +0000 |
parents | 4fc402c3ec73 |
children | b0cbe16febaf |
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 | |
44 cache->list_head.prev = NULL; | |
45 cache->list_head.next = &cache->list_tail; | |
46 | |
47 cache->list_tail.prev = &cache->list_head; | |
48 cache->list_tail.next = NULL; | |
49 | |
1761 | 50 ngx_rbtree_init(&cache->rbtree, &cache->sentinel, |
1743
4fc402c3ec73
optimize rbtree initialization and insert
Igor Sysoev <igor@sysoev.ru>
parents:
1458
diff
changeset
|
51 ngx_open_file_cache_rbtree_insert_value); |
1453 | 52 |
53 cache->current = 0; | |
54 cache->max = max; | |
55 cache->inactive = inactive; | |
56 | |
57 cln = ngx_pool_cleanup_add(pool, 0); | |
58 if (cln == NULL) { | |
59 return NULL; | |
60 } | |
61 | |
62 cln->handler = ngx_open_file_cache_cleanup; | |
63 cln->data = cache; | |
64 | |
65 return cache; | |
66 } | |
67 | |
68 | |
69 static void | |
70 ngx_open_file_cache_cleanup(void *data) | |
71 { | |
72 ngx_open_file_cache_t *cache = data; | |
73 | |
74 ngx_cached_open_file_t *file; | |
75 | |
76 ngx_log_debug0(NGX_LOG_DEBUG_CORE, ngx_cycle->log, 0, | |
77 "open file cache cleanup"); | |
78 | |
79 for ( ;; ) { | |
80 | |
81 file = cache->list_tail.prev; | |
82 | |
83 if (file == &cache->list_head) { | |
84 break; | |
85 } | |
86 | |
87 file->next->prev = file->prev; | |
88 file->prev->next = file->next; | |
89 | |
90 ngx_rbtree_delete(&cache->rbtree, &file->node); | |
91 | |
92 cache->current--; | |
93 | |
94 ngx_log_debug1(NGX_LOG_DEBUG_CORE, ngx_cycle->log, 0, | |
95 "delete cached open file: %s", file->name); | |
96 | |
97 if (!file->err && !file->is_dir) { | |
98 file->close = 1; | |
99 file->count = 0; | |
100 ngx_close_cached_file(cache, file, ngx_cycle->log); | |
101 | |
102 } else { | |
103 ngx_free(file->name); | |
104 ngx_free(file); | |
105 } | |
106 } | |
107 | |
108 if (cache->current) { | |
109 ngx_log_error(NGX_LOG_ALERT, ngx_cycle->log, 0, | |
110 "%d items still leave in open file cache", | |
111 cache->current); | |
112 } | |
113 | |
114 if (cache->rbtree.root != cache->rbtree.sentinel) { | |
115 ngx_log_error(NGX_LOG_ALERT, ngx_cycle->log, 0, | |
116 "rbtree still is not empty in open file cache"); | |
117 | |
118 } | |
119 } | |
120 | |
121 | |
122 ngx_int_t | |
123 ngx_open_cached_file(ngx_open_file_cache_t *cache, ngx_str_t *name, | |
124 ngx_open_file_info_t *of, ngx_pool_t *pool) | |
125 { | |
126 time_t now; | |
127 uint32_t hash; | |
128 ngx_int_t rc; | |
129 ngx_rbtree_node_t *node, *sentinel; | |
130 ngx_pool_cleanup_t *cln; | |
131 ngx_cached_open_file_t *file; | |
132 ngx_pool_cleanup_file_t *clnf; | |
133 ngx_open_file_cache_event_t *fev; | |
134 ngx_open_file_cache_cleanup_t *ofcln; | |
135 | |
136 of->err = 0; | |
137 | |
138 if (cache == NULL) { | |
139 | |
140 cln = ngx_pool_cleanup_add(pool, sizeof(ngx_pool_cleanup_file_t)); | |
141 if (cln == NULL) { | |
142 return NGX_ERROR; | |
143 } | |
144 | |
145 rc = ngx_open_and_stat_file(name->data, of, pool->log); | |
146 | |
147 if (rc == NGX_OK && !of->is_dir) { | |
148 cln->handler = ngx_pool_cleanup_file; | |
149 clnf = cln->data; | |
150 | |
151 clnf->fd = of->fd; | |
152 clnf->name = name->data; | |
153 clnf->log = pool->log; | |
154 } | |
155 | |
156 return rc; | |
157 } | |
158 | |
159 cln = ngx_pool_cleanup_add(pool, sizeof(ngx_open_file_cache_cleanup_t)); | |
160 if (cln == NULL) { | |
161 return NGX_ERROR; | |
162 } | |
163 | |
164 hash = ngx_crc32_long(name->data, name->len); | |
165 | |
166 node = cache->rbtree.root; | |
167 sentinel = cache->rbtree.sentinel; | |
168 | |
169 now = ngx_time(); | |
170 | |
171 while (node != sentinel) { | |
172 | |
173 if (hash < node->key) { | |
174 node = node->left; | |
175 continue; | |
176 } | |
177 | |
178 if (hash > node->key) { | |
179 node = node->right; | |
180 continue; | |
181 } | |
182 | |
183 /* hash == node->key */ | |
184 | |
185 do { | |
186 file = (ngx_cached_open_file_t *) node; | |
187 | |
188 rc = ngx_strcmp(name->data, file->name); | |
189 | |
190 if (rc == 0) { | |
191 | |
192 file->next->prev = file->prev; | |
193 file->prev->next = file->next; | |
194 | |
195 if (file->event || now - file->created < of->retest) { | |
196 if (file->err == 0) { | |
197 of->fd = file->fd; | |
198 of->uniq = file->uniq; | |
199 of->mtime = file->mtime; | |
200 of->size = file->size; | |
201 | |
202 of->is_dir = file->is_dir; | |
203 of->is_file = file->is_file; | |
204 of->is_link = file->is_link; | |
205 of->is_exec = file->is_exec; | |
206 | |
207 if (!file->is_dir) { | |
208 file->count++; | |
209 } | |
210 | |
211 } else { | |
212 of->err = file->err; | |
213 } | |
214 | |
215 goto found; | |
216 } | |
217 | |
218 ngx_log_debug4(NGX_LOG_DEBUG_CORE, pool->log, 0, | |
219 "retest open file: %s, fd:%d, c:%d, e:%d", | |
220 file->name, file->fd, file->count, file->err); | |
221 | |
222 if (file->is_dir) { | |
223 | |
224 /* | |
225 * chances that directory became file are very small | |
226 * so test_dir flag allows to use a single ngx_file_info() | |
227 * syscall instead of three syscalls | |
228 */ | |
229 | |
230 of->test_dir = 1; | |
231 } | |
232 | |
233 rc = ngx_open_and_stat_file(name->data, of, pool->log); | |
234 | |
235 if (rc != NGX_OK && (of->err == 0 || !of->errors)) { | |
236 goto failed; | |
237 } | |
238 | |
239 if (of->is_dir) { | |
240 if (file->is_dir || file->err) { | |
241 goto update; | |
242 } | |
243 | |
244 /* file became directory */ | |
245 | |
246 } else if (of->err == 0) { /* file */ | |
247 | |
248 if (file->is_dir || file->err) { | |
249 goto update; | |
250 } | |
251 | |
252 if (of->uniq == file->uniq | |
253 && of->mtime == file->mtime | |
254 && of->size == file->size) | |
255 { | |
256 if (ngx_close_file(of->fd) == NGX_FILE_ERROR) { | |
257 ngx_log_error(NGX_LOG_ALERT, pool->log, ngx_errno, | |
258 ngx_close_file_n " \"%s\" failed", | |
259 name->data); | |
260 } | |
261 | |
262 of->fd = file->fd; | |
263 file->count++; | |
264 | |
265 goto renew; | |
266 } | |
267 | |
268 /* file was changed */ | |
269 | |
270 } else { /* error to cache */ | |
271 | |
272 if (file->err || file->is_dir) { | |
273 goto update; | |
274 } | |
275 | |
276 /* file was removed, etc. */ | |
277 } | |
278 | |
279 if (file->count == 0) { | |
280 if (ngx_close_file(file->fd) == NGX_FILE_ERROR) { | |
281 ngx_log_error(NGX_LOG_ALERT, pool->log, ngx_errno, | |
282 ngx_close_file_n " \"%s\" failed", | |
283 name->data); | |
284 } | |
285 | |
286 goto update; | |
287 } | |
288 | |
289 ngx_rbtree_delete(&cache->rbtree, &file->node); | |
290 | |
291 cache->current--; | |
292 | |
293 file->close = 1; | |
294 | |
295 goto create; | |
296 } | |
297 | |
298 node = (rc < 0) ? node->left : node->right; | |
299 | |
300 } while (node != sentinel && hash == node->key); | |
301 | |
302 break; | |
303 } | |
304 | |
305 /* not found */ | |
306 | |
307 file = NULL; | |
308 | |
309 rc = ngx_open_and_stat_file(name->data, of, pool->log); | |
310 | |
311 if (rc != NGX_OK && (of->err == 0 || !of->errors)) { | |
312 goto failed; | |
313 } | |
314 | |
315 create: | |
316 | |
317 if (cache->current >= cache->max) { | |
318 ngx_expire_old_cached_files(cache, 0, pool->log); | |
319 } | |
320 | |
321 file = ngx_alloc(sizeof(ngx_cached_open_file_t), pool->log); | |
322 | |
323 if (file == NULL) { | |
324 goto failed; | |
325 } | |
326 | |
327 file->name = ngx_alloc(name->len + 1, pool->log); | |
328 | |
329 if (file->name == NULL) { | |
330 ngx_free(file); | |
331 file = NULL; | |
332 goto failed; | |
333 } | |
334 | |
335 ngx_cpystrn(file->name, name->data, name->len + 1); | |
336 | |
337 file->node.key = hash; | |
338 | |
339 ngx_rbtree_insert(&cache->rbtree, &file->node); | |
340 | |
341 cache->current++; | |
342 | |
343 file->count = 0; | |
344 | |
345 update: | |
346 | |
1458
614090b26fbf
test the most relevant condition first
Igor Sysoev <igor@sysoev.ru>
parents:
1457
diff
changeset
|
347 if (of->events |
614090b26fbf
test the most relevant condition first
Igor Sysoev <igor@sysoev.ru>
parents:
1457
diff
changeset
|
348 && (ngx_event_flags & NGX_USE_VNODE_EVENT) |
1457 | 349 && of->fd != NGX_INVALID_FILE) |
350 { | |
1453 | 351 file->event = ngx_calloc(sizeof(ngx_event_t), pool->log); |
352 if (file->event== NULL) { | |
353 goto failed; | |
354 } | |
355 | |
356 fev = ngx_alloc(sizeof(ngx_open_file_cache_event_t), pool->log); | |
357 if (fev == NULL) { | |
358 goto failed; | |
359 } | |
360 | |
361 fev->fd = of->fd; | |
362 fev->file = file; | |
363 fev->cache = cache; | |
364 | |
365 file->event->handler = ngx_open_file_cache_remove; | |
366 file->event->data = fev; | |
367 | |
368 /* | |
369 * although vnode event may be called while ngx_cycle->poll | |
370 * destruction; however, cleanup procedures are run before any | |
371 * memory freeing and events will be canceled. | |
372 */ | |
373 | |
374 file->event->log = ngx_cycle->log; | |
375 | |
376 if (ngx_add_event(file->event, NGX_VNODE_EVENT, NGX_ONESHOT_EVENT) | |
377 != NGX_OK) | |
378 { | |
379 ngx_free(file->event->data); | |
380 ngx_free(file->event); | |
381 goto failed; | |
382 } | |
383 | |
384 } else { | |
385 file->event = NULL; | |
386 } | |
387 | |
388 file->fd = of->fd; | |
389 file->err = of->err; | |
390 | |
391 if (of->err == 0) { | |
392 file->uniq = of->uniq; | |
393 file->mtime = of->mtime; | |
394 file->size = of->size; | |
395 | |
396 file->close = 0; | |
397 | |
398 file->is_dir = of->is_dir; | |
399 file->is_file = of->is_file; | |
400 file->is_link = of->is_link; | |
401 file->is_exec = of->is_exec; | |
402 | |
403 if (!of->is_dir) { | |
404 file->count++; | |
405 } | |
406 } | |
407 | |
408 renew: | |
409 | |
410 file->created = now; | |
411 | |
412 found: | |
413 | |
414 file->accessed = now; | |
415 | |
416 /* add to the inactive list head */ | |
417 | |
418 file->next = cache->list_head.next; | |
419 file->next->prev = file; | |
420 file->prev = &cache->list_head; | |
421 cache->list_head.next = file; | |
422 | |
423 ngx_log_debug4(NGX_LOG_DEBUG_CORE, pool->log, 0, | |
424 "cached open file: %s, fd:%d, c:%d, e:%d", | |
425 file->name, file->fd, file->count, file->err); | |
426 | |
427 if (of->err == 0) { | |
428 | |
429 if (!of->is_dir) { | |
430 cln->handler = ngx_open_file_cleanup; | |
431 ofcln = cln->data; | |
432 | |
433 ofcln->cache = cache; | |
434 ofcln->file = file; | |
435 ofcln->log = pool->log; | |
436 } | |
437 | |
438 return NGX_OK; | |
439 } | |
440 | |
441 return NGX_ERROR; | |
442 | |
443 failed: | |
444 | |
445 if (file && file->count == 0) { | |
446 ngx_rbtree_delete(&cache->rbtree, &file->node); | |
447 | |
448 cache->current--; | |
449 | |
450 if (ngx_close_file(file->fd) == NGX_FILE_ERROR) { | |
451 ngx_log_error(NGX_LOG_ALERT, pool->log, ngx_errno, | |
452 ngx_close_file_n " \"%s\" failed", file->name); | |
453 } | |
454 | |
455 ngx_free(file->name); | |
456 ngx_free(file); | |
457 } | |
458 | |
459 if (of->fd != NGX_INVALID_FILE) { | |
460 if (ngx_close_file(of->fd) == NGX_FILE_ERROR) { | |
461 ngx_log_error(NGX_LOG_ALERT, pool->log, ngx_errno, | |
462 ngx_close_file_n " \"%s\" failed", name->data); | |
463 } | |
464 } | |
465 | |
466 return NGX_ERROR; | |
467 } | |
468 | |
469 | |
470 static ngx_int_t | |
471 ngx_open_and_stat_file(u_char *name, ngx_open_file_info_t *of, ngx_log_t *log) | |
472 { | |
473 ngx_fd_t fd; | |
474 ngx_file_info_t fi; | |
475 | |
476 of->fd = NGX_INVALID_FILE; | |
477 | |
478 if (of->test_dir) { | |
479 | |
480 if (ngx_file_info(name, &fi) == -1) { | |
481 of->err = ngx_errno; | |
482 | |
483 return NGX_ERROR; | |
484 } | |
485 | |
486 of->uniq = ngx_file_uniq(&fi); | |
487 of->mtime = ngx_file_mtime(&fi); | |
488 of->size = ngx_file_size(&fi); | |
489 of->is_dir = ngx_is_dir(&fi); | |
490 of->is_file = ngx_is_file(&fi); | |
491 of->is_link = ngx_is_link(&fi); | |
492 of->is_exec = ngx_is_exec(&fi); | |
493 | |
494 if (of->is_dir) { | |
495 return NGX_OK; | |
496 } | |
497 } | |
498 | |
499 fd = ngx_open_file(name, NGX_FILE_RDONLY, NGX_FILE_OPEN, 0); | |
500 | |
501 if (fd == NGX_INVALID_FILE) { | |
502 of->err = ngx_errno; | |
503 return NGX_ERROR; | |
504 } | |
505 | |
506 if (ngx_fd_info(fd, &fi) == NGX_FILE_ERROR) { | |
507 ngx_log_error(NGX_LOG_CRIT, log, ngx_errno, | |
508 ngx_fd_info_n " \"%s\" failed", name); | |
509 | |
510 if (ngx_close_file(fd) == NGX_FILE_ERROR) { | |
511 ngx_log_error(NGX_LOG_ALERT, log, ngx_errno, | |
512 ngx_close_file_n " \"%s\" failed", name); | |
513 } | |
514 | |
515 return NGX_ERROR; | |
516 } | |
517 | |
518 if (ngx_is_dir(&fi)) { | |
519 if (ngx_close_file(fd) == NGX_FILE_ERROR) { | |
520 ngx_log_error(NGX_LOG_ALERT, log, ngx_errno, | |
521 ngx_close_file_n " \"%s\" failed", name); | |
522 } | |
523 | |
524 fd = NGX_INVALID_FILE; | |
525 } | |
526 | |
527 of->fd = fd; | |
528 of->uniq = ngx_file_uniq(&fi); | |
529 of->mtime = ngx_file_mtime(&fi); | |
530 of->size = ngx_file_size(&fi); | |
531 of->is_dir = ngx_is_dir(&fi); | |
532 of->is_file = ngx_is_file(&fi); | |
533 of->is_link = ngx_is_link(&fi); | |
534 of->is_exec = ngx_is_exec(&fi); | |
535 | |
536 return NGX_OK; | |
537 } | |
538 | |
539 | |
540 static void | |
541 ngx_open_file_cleanup(void *data) | |
542 { | |
543 ngx_open_file_cache_cleanup_t *c = data; | |
544 | |
545 c->file->count--; | |
546 | |
547 ngx_close_cached_file(c->cache, c->file, c->log); | |
548 | |
549 /* drop one or two expired open files */ | |
550 ngx_expire_old_cached_files(c->cache, 1, c->log); | |
551 } | |
552 | |
553 | |
554 static void | |
555 ngx_close_cached_file(ngx_open_file_cache_t *cache, | |
556 ngx_cached_open_file_t *file, ngx_log_t *log) | |
557 { | |
558 ngx_log_debug4(NGX_LOG_DEBUG_CORE, log, 0, | |
559 "close cached open file: %s, fd:%d, c:%d, %d", | |
560 file->name, file->fd, file->count, file->close); | |
561 | |
562 if (!file->close) { | |
563 | |
564 file->accessed = ngx_time(); | |
565 | |
566 if (cache->list_head.next != file) { | |
567 | |
568 /* delete from inactive list */ | |
569 | |
570 file->next->prev = file->prev; | |
571 file->prev->next = file->next; | |
572 | |
573 /* add to the inactive list head */ | |
574 | |
575 file->next = cache->list_head.next; | |
576 file->next->prev = file; | |
577 file->prev = &cache->list_head; | |
578 cache->list_head.next = file; | |
579 } | |
580 | |
581 return; | |
582 } | |
583 | |
584 if (file->event) { | |
585 (void) ngx_del_event(file->event, NGX_VNODE_EVENT, | |
586 file->count ? NGX_FLUSH_EVENT : NGX_CLOSE_EVENT); | |
587 | |
588 ngx_free(file->event->data); | |
589 ngx_free(file->event); | |
590 file->event = NULL; | |
591 } | |
592 | |
593 if (file->count) { | |
594 return; | |
595 } | |
596 | |
597 if (ngx_close_file(file->fd) == NGX_FILE_ERROR) { | |
598 ngx_log_error(NGX_LOG_ALERT, log, ngx_errno, | |
599 ngx_close_file_n " \"%s\" failed", file->name); | |
600 } | |
601 | |
602 ngx_free(file->name); | |
603 ngx_free(file); | |
604 } | |
605 | |
606 | |
607 static void | |
608 ngx_expire_old_cached_files(ngx_open_file_cache_t *cache, ngx_uint_t n, | |
609 ngx_log_t *log) | |
610 { | |
611 time_t now; | |
612 ngx_cached_open_file_t *file; | |
613 | |
614 now = ngx_time(); | |
615 | |
616 /* | |
617 * n == 1 deletes one or two inactive files | |
618 * n == 0 deletes least recently used file by force | |
619 * and one or two inactive files | |
620 */ | |
621 | |
622 while (n < 3) { | |
623 | |
624 file = cache->list_tail.prev; | |
625 | |
626 if (file == &cache->list_head) { | |
627 return; | |
628 } | |
629 | |
630 if (n++ != 0 && now - file->accessed <= cache->inactive) { | |
631 return; | |
632 } | |
633 | |
634 file->next->prev = file->prev; | |
635 file->prev->next = file->next; | |
636 | |
637 ngx_rbtree_delete(&cache->rbtree, &file->node); | |
638 | |
639 cache->current--; | |
640 | |
641 ngx_log_debug1(NGX_LOG_DEBUG_CORE, log, 0, | |
642 "expire cached open file: %s", file->name); | |
643 | |
644 if (!file->err && !file->is_dir) { | |
645 file->close = 1; | |
646 ngx_close_cached_file(cache, file, log); | |
647 | |
648 } else { | |
649 ngx_free(file->name); | |
650 ngx_free(file); | |
651 } | |
652 } | |
653 } | |
654 | |
655 | |
656 static void | |
657 ngx_open_file_cache_rbtree_insert_value(ngx_rbtree_node_t *temp, | |
658 ngx_rbtree_node_t *node, ngx_rbtree_node_t *sentinel) | |
659 { | |
660 ngx_rbtree_node_t **p; | |
661 ngx_cached_open_file_t *file, *file_temp; | |
662 | |
663 for ( ;; ) { | |
664 | |
665 if (node->key < temp->key) { | |
666 | |
667 p = &temp->left; | |
668 | |
669 } else if (node->key > temp->key) { | |
670 | |
671 p = &temp->right; | |
672 | |
673 } else { /* node->key == temp->key */ | |
674 | |
675 file = (ngx_cached_open_file_t *) node; | |
676 file_temp = (ngx_cached_open_file_t *) temp; | |
677 | |
678 p = (ngx_strcmp(file->name, file_temp->name) < 0) | |
679 ? &temp->left : &temp->right; | |
680 } | |
681 | |
682 if (*p == sentinel) { | |
683 break; | |
684 } | |
685 | |
686 temp = *p; | |
687 } | |
688 | |
689 *p = node; | |
690 node->parent = temp; | |
691 node->left = sentinel; | |
692 node->right = sentinel; | |
693 ngx_rbt_red(node); | |
694 } | |
695 | |
696 | |
697 static void | |
698 ngx_open_file_cache_remove(ngx_event_t *ev) | |
699 { | |
700 ngx_cached_open_file_t *file; | |
701 ngx_open_file_cache_event_t *fev; | |
702 | |
703 fev = ev->data; | |
704 file = fev->file; | |
705 | |
706 file->next->prev = file->prev; | |
707 file->prev->next = file->next; | |
708 | |
709 ngx_rbtree_delete(&fev->cache->rbtree, &file->node); | |
710 | |
711 fev->cache->current--; | |
712 | |
713 /* NGX_ONESHOT_EVENT was already deleted */ | |
714 file->event = NULL; | |
715 | |
716 file->close = 1; | |
717 | |
718 ngx_close_cached_file(fev->cache, file, ev->log); | |
719 | |
720 /* free memory only when fev->cache and fev->file are already not needed */ | |
721 | |
722 ngx_free(ev->data); | |
723 ngx_free(ev); | |
724 } |