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cd748f27 | 1 | /* |
691aef5a | 2 | * $Id: aiops.cc,v 1.5 2005/04/23 16:53:18 serassio Exp $ |
cd748f27 | 3 | * |
4 | * DEBUG: section 43 AIOPS | |
5 | * AUTHOR: Stewart Forster <slf@connect.com.au> | |
6 | * | |
2b6662ba | 7 | * SQUID Web Proxy Cache http://www.squid-cache.org/ |
cd748f27 | 8 | * ---------------------------------------------------------- |
9 | * | |
2b6662ba | 10 | * Squid is the result of efforts by numerous individuals from |
11 | * the Internet community; see the CONTRIBUTORS file for full | |
12 | * details. Many organizations have provided support for Squid's | |
13 | * development; see the SPONSORS file for full details. Squid is | |
14 | * Copyrighted (C) 2001 by the Regents of the University of | |
15 | * California; see the COPYRIGHT file for full details. Squid | |
16 | * incorporates software developed and/or copyrighted by other | |
17 | * sources; see the CREDITS file for full details. | |
cd748f27 | 18 | * |
19 | * This program is free software; you can redistribute it and/or modify | |
20 | * it under the terms of the GNU General Public License as published by | |
21 | * the Free Software Foundation; either version 2 of the License, or | |
22 | * (at your option) any later version. | |
23 | * | |
24 | * This program is distributed in the hope that it will be useful, | |
25 | * but WITHOUT ANY WARRANTY; without even the implied warranty of | |
26 | * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the | |
27 | * GNU General Public License for more details. | |
28 | * | |
29 | * You should have received a copy of the GNU General Public License | |
30 | * along with this program; if not, write to the Free Software | |
31 | * Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111, USA. | |
32 | * | |
33 | */ | |
34 | ||
e4116bdb | 35 | #ifndef _REENTRANT |
36 | #error "_REENTRANT MUST be defined to build squid async io support." | |
37 | #endif | |
38 | ||
cd748f27 | 39 | #include "squid.h" |
b9ae18aa | 40 | #include "DiskThreads.h" |
cd748f27 | 41 | |
42 | #include <stdio.h> | |
43 | #include <sys/types.h> | |
44 | #include <sys/stat.h> | |
45 | #include <fcntl.h> | |
46 | #include <pthread.h> | |
47 | #include <errno.h> | |
48 | #include <dirent.h> | |
49 | #include <signal.h> | |
50 | #if HAVE_SCHED_H | |
51 | #include <sched.h> | |
52 | #endif | |
56410c89 | 53 | #include "CommIO.h" |
cd748f27 | 54 | |
55 | #define RIDICULOUS_LENGTH 4096 | |
56 | ||
c04d4f40 | 57 | enum _squidaio_thread_status { |
cd748f27 | 58 | _THREAD_STARTING = 0, |
59 | _THREAD_WAITING, | |
60 | _THREAD_BUSY, | |
61 | _THREAD_FAILED, | |
62 | _THREAD_DONE | |
63 | }; | |
c04d4f40 | 64 | typedef enum _squidaio_thread_status squidaio_thread_status; |
cd748f27 | 65 | |
62e76326 | 66 | typedef struct squidaio_request_t |
67 | { | |
68 | ||
c04d4f40 | 69 | struct squidaio_request_t *next; |
70 | squidaio_request_type request_type; | |
cd748f27 | 71 | int cancelled; |
72 | char *path; | |
73 | int oflag; | |
74 | mode_t mode; | |
75 | int fd; | |
76 | char *bufferp; | |
cd748f27 | 77 | int buflen; |
78 | off_t offset; | |
79 | int whence; | |
80 | int ret; | |
81 | int err; | |
62e76326 | 82 | |
cd748f27 | 83 | struct stat *tmpstatp; |
62e76326 | 84 | |
cd748f27 | 85 | struct stat *statp; |
c04d4f40 | 86 | squidaio_result_t *resultp; |
62e76326 | 87 | } |
88 | ||
89 | squidaio_request_t; | |
cd748f27 | 90 | |
62e76326 | 91 | typedef struct squidaio_request_queue_t |
92 | { | |
55f0e6f7 | 93 | pthread_mutex_t mutex; |
94 | pthread_cond_t cond; | |
c04d4f40 | 95 | squidaio_request_t *volatile head; |
96 | squidaio_request_t *volatile *volatile tailp; | |
55f0e6f7 | 97 | unsigned long requests; |
f0debecb | 98 | unsigned long blocked; /* main failed to lock the queue */ |
62e76326 | 99 | } |
100 | ||
101 | squidaio_request_queue_t; | |
55f0e6f7 | 102 | |
c04d4f40 | 103 | typedef struct squidaio_thread_t squidaio_thread_t; |
62e76326 | 104 | |
105 | struct squidaio_thread_t | |
106 | { | |
c04d4f40 | 107 | squidaio_thread_t *next; |
cd748f27 | 108 | pthread_t thread; |
c04d4f40 | 109 | squidaio_thread_status status; |
62e76326 | 110 | |
c04d4f40 | 111 | struct squidaio_request_t *current_req; |
55f0e6f7 | 112 | unsigned long requests; |
113 | }; | |
cd748f27 | 114 | |
c04d4f40 | 115 | static void squidaio_queue_request(squidaio_request_t *); |
116 | static void squidaio_cleanup_request(squidaio_request_t *); | |
117 | static void *squidaio_thread_loop(void *); | |
118 | static void squidaio_do_open(squidaio_request_t *); | |
119 | static void squidaio_do_read(squidaio_request_t *); | |
120 | static void squidaio_do_write(squidaio_request_t *); | |
121 | static void squidaio_do_close(squidaio_request_t *); | |
122 | static void squidaio_do_stat(squidaio_request_t *); | |
123 | static void squidaio_do_unlink(squidaio_request_t *); | |
124 | static void squidaio_do_truncate(squidaio_request_t *); | |
cd748f27 | 125 | #if AIO_OPENDIR |
c04d4f40 | 126 | static void *squidaio_do_opendir(squidaio_request_t *); |
cd748f27 | 127 | #endif |
c04d4f40 | 128 | static void squidaio_debug(squidaio_request_t *); |
129 | static void squidaio_poll_queues(void); | |
cd748f27 | 130 | |
c04d4f40 | 131 | static squidaio_thread_t *threads = NULL; |
132 | static int squidaio_initialised = 0; | |
cd748f27 | 133 | |
55f0e6f7 | 134 | |
58cd5bbd | 135 | #define AIO_LARGE_BUFS 16384 |
136 | #define AIO_MEDIUM_BUFS AIO_LARGE_BUFS >> 1 | |
137 | #define AIO_SMALL_BUFS AIO_LARGE_BUFS >> 2 | |
138 | #define AIO_TINY_BUFS AIO_LARGE_BUFS >> 3 | |
55f0e6f7 | 139 | #define AIO_MICRO_BUFS 128 |
58cd5bbd | 140 | |
b001e822 | 141 | static MemAllocatorProxy *squidaio_large_bufs = NULL; /* 16K */ |
142 | static MemAllocatorProxy *squidaio_medium_bufs = NULL; /* 8K */ | |
143 | static MemAllocatorProxy *squidaio_small_bufs = NULL; /* 4K */ | |
144 | static MemAllocatorProxy *squidaio_tiny_bufs = NULL; /* 2K */ | |
145 | static MemAllocatorProxy *squidaio_micro_bufs = NULL; /* 128K */ | |
58cd5bbd | 146 | |
cd748f27 | 147 | static int request_queue_len = 0; |
b001e822 | 148 | static MemAllocatorProxy *squidaio_request_pool = NULL; |
149 | static MemAllocatorProxy *squidaio_thread_pool = NULL; | |
c04d4f40 | 150 | static squidaio_request_queue_t request_queue; |
62e76326 | 151 | |
152 | static struct | |
153 | { | |
c04d4f40 | 154 | squidaio_request_t *head, **tailp; |
62e76326 | 155 | } |
f0debecb | 156 | |
62e76326 | 157 | request_queue2 = { |
158 | ||
159 | NULL, &request_queue2.head | |
160 | }; | |
c04d4f40 | 161 | static squidaio_request_queue_t done_queue; |
62e76326 | 162 | |
163 | static struct | |
164 | { | |
c04d4f40 | 165 | squidaio_request_t *head, **tailp; |
62e76326 | 166 | } |
f0debecb | 167 | |
62e76326 | 168 | done_requests = { |
169 | ||
170 | NULL, &done_requests.head | |
171 | }; | |
cd748f27 | 172 | static pthread_attr_t globattr; |
5e5c622b | 173 | #if HAVE_SCHED_H |
62e76326 | 174 | |
cd748f27 | 175 | static struct sched_param globsched; |
5e5c622b | 176 | #endif |
cd748f27 | 177 | static pthread_t main_thread; |
178 | ||
b001e822 | 179 | static MemAllocatorProxy * |
c04d4f40 | 180 | squidaio_get_pool(int size) |
58cd5bbd | 181 | { |
b001e822 | 182 | MemAllocatorProxy *p; |
62e76326 | 183 | |
58cd5bbd | 184 | if (size <= AIO_LARGE_BUFS) { |
62e76326 | 185 | if (size <= AIO_MICRO_BUFS) |
186 | p = squidaio_micro_bufs; | |
187 | else if (size <= AIO_TINY_BUFS) | |
188 | p = squidaio_tiny_bufs; | |
189 | else if (size <= AIO_SMALL_BUFS) | |
190 | p = squidaio_small_bufs; | |
191 | else if (size <= AIO_MEDIUM_BUFS) | |
192 | p = squidaio_medium_bufs; | |
193 | else | |
194 | p = squidaio_large_bufs; | |
58cd5bbd | 195 | } else |
62e76326 | 196 | p = NULL; |
197 | ||
58cd5bbd | 198 | return p; |
199 | } | |
200 | ||
211f1d0b | 201 | void * |
c04d4f40 | 202 | squidaio_xmalloc(int size) |
58cd5bbd | 203 | { |
204 | void *p; | |
b001e822 | 205 | MemAllocatorProxy *pool; |
58cd5bbd | 206 | |
c04d4f40 | 207 | if ((pool = squidaio_get_pool(size)) != NULL) { |
b001e822 | 208 | p = pool->alloc(); |
58cd5bbd | 209 | } else |
62e76326 | 210 | p = xmalloc(size); |
58cd5bbd | 211 | |
212 | return p; | |
213 | } | |
214 | ||
55f0e6f7 | 215 | static char * |
c04d4f40 | 216 | squidaio_xstrdup(const char *str) |
55f0e6f7 | 217 | { |
218 | char *p; | |
f0debecb | 219 | int len = strlen(str) + 1; |
55f0e6f7 | 220 | |
e6ccf245 | 221 | p = (char *)squidaio_xmalloc(len); |
55f0e6f7 | 222 | strncpy(p, str, len); |
223 | ||
224 | return p; | |
225 | } | |
226 | ||
211f1d0b | 227 | void |
c04d4f40 | 228 | squidaio_xfree(void *p, int size) |
58cd5bbd | 229 | { |
b001e822 | 230 | MemAllocatorProxy *pool; |
58cd5bbd | 231 | |
c04d4f40 | 232 | if ((pool = squidaio_get_pool(size)) != NULL) { |
b001e822 | 233 | pool->free(p); |
58cd5bbd | 234 | } else |
62e76326 | 235 | xfree(p); |
58cd5bbd | 236 | } |
237 | ||
55f0e6f7 | 238 | static void |
c04d4f40 | 239 | squidaio_xstrfree(char *str) |
55f0e6f7 | 240 | { |
b001e822 | 241 | MemAllocatorProxy *pool; |
f0debecb | 242 | int len = strlen(str) + 1; |
55f0e6f7 | 243 | |
c04d4f40 | 244 | if ((pool = squidaio_get_pool(len)) != NULL) { |
b001e822 | 245 | pool->free(str); |
55f0e6f7 | 246 | } else |
62e76326 | 247 | xfree(str); |
55f0e6f7 | 248 | } |
249 | ||
d06925a4 | 250 | void |
c04d4f40 | 251 | squidaio_init(void) |
cd748f27 | 252 | { |
253 | int i; | |
c04d4f40 | 254 | squidaio_thread_t *threadp; |
cd748f27 | 255 | |
c04d4f40 | 256 | if (squidaio_initialised) |
62e76326 | 257 | return; |
cd748f27 | 258 | |
259 | pthread_attr_init(&globattr); | |
62e76326 | 260 | |
cd748f27 | 261 | #if HAVE_PTHREAD_ATTR_SETSCOPE |
62e76326 | 262 | |
cd748f27 | 263 | pthread_attr_setscope(&globattr, PTHREAD_SCOPE_SYSTEM); |
62e76326 | 264 | |
cd748f27 | 265 | #endif |
5e5c622b | 266 | #if HAVE_SCHED_H |
62e76326 | 267 | |
cd748f27 | 268 | globsched.sched_priority = 1; |
62e76326 | 269 | |
5e5c622b | 270 | #endif |
62e76326 | 271 | |
cd748f27 | 272 | main_thread = pthread_self(); |
62e76326 | 273 | |
5e5c622b | 274 | #if HAVE_SCHED_H && HAVE_PTHREAD_SETSCHEDPARAM |
62e76326 | 275 | |
cd748f27 | 276 | pthread_setschedparam(main_thread, SCHED_OTHER, &globsched); |
62e76326 | 277 | |
cd748f27 | 278 | #endif |
5e5c622b | 279 | #if HAVE_SCHED_H |
62e76326 | 280 | |
cd748f27 | 281 | globsched.sched_priority = 2; |
62e76326 | 282 | |
5e5c622b | 283 | #endif |
284 | #if HAVE_SCHED_H && HAVE_PTHREAD_ATTR_SETSCHEDPARAM | |
62e76326 | 285 | |
cd748f27 | 286 | pthread_attr_setschedparam(&globattr, &globsched); |
62e76326 | 287 | |
cd748f27 | 288 | #endif |
289 | ||
55f0e6f7 | 290 | /* Initialize request queue */ |
291 | if (pthread_mutex_init(&(request_queue.mutex), NULL)) | |
62e76326 | 292 | fatal("Failed to create mutex"); |
293 | ||
55f0e6f7 | 294 | if (pthread_cond_init(&(request_queue.cond), NULL)) |
62e76326 | 295 | fatal("Failed to create condition variable"); |
296 | ||
55f0e6f7 | 297 | request_queue.head = NULL; |
62e76326 | 298 | |
55f0e6f7 | 299 | request_queue.tailp = &request_queue.head; |
62e76326 | 300 | |
55f0e6f7 | 301 | request_queue.requests = 0; |
62e76326 | 302 | |
55f0e6f7 | 303 | request_queue.blocked = 0; |
304 | ||
305 | /* Initialize done queue */ | |
306 | if (pthread_mutex_init(&(done_queue.mutex), NULL)) | |
62e76326 | 307 | fatal("Failed to create mutex"); |
308 | ||
55f0e6f7 | 309 | if (pthread_cond_init(&(done_queue.cond), NULL)) |
62e76326 | 310 | fatal("Failed to create condition variable"); |
311 | ||
55f0e6f7 | 312 | done_queue.head = NULL; |
62e76326 | 313 | |
55f0e6f7 | 314 | done_queue.tailp = &done_queue.head; |
62e76326 | 315 | |
55f0e6f7 | 316 | done_queue.requests = 0; |
62e76326 | 317 | |
55f0e6f7 | 318 | done_queue.blocked = 0; |
cd748f27 | 319 | |
55f0e6f7 | 320 | /* Create threads and get them to sit in their wait loop */ |
b001e822 | 321 | squidaio_thread_pool = new MemAllocatorProxy("aio_thread", sizeof(squidaio_thread_t)); |
62e76326 | 322 | |
9fbbe256 | 323 | assert(NUMTHREADS); |
62e76326 | 324 | |
cd748f27 | 325 | for (i = 0; i < NUMTHREADS; i++) { |
b001e822 | 326 | threadp = (squidaio_thread_t *)squidaio_thread_pool->alloc(); |
62e76326 | 327 | threadp->status = _THREAD_STARTING; |
328 | threadp->current_req = NULL; | |
329 | threadp->requests = 0; | |
330 | threadp->next = threads; | |
331 | threads = threadp; | |
332 | ||
333 | if (pthread_create(&threadp->thread, &globattr, squidaio_thread_loop, threadp)) { | |
334 | fprintf(stderr, "Thread creation failed\n"); | |
335 | threadp->status = _THREAD_FAILED; | |
336 | continue; | |
337 | } | |
cd748f27 | 338 | } |
339 | ||
340 | /* Create request pool */ | |
b001e822 | 341 | squidaio_request_pool = new MemAllocatorProxy("aio_request", sizeof(squidaio_request_t)); |
62e76326 | 342 | |
b001e822 | 343 | squidaio_large_bufs = new MemAllocatorProxy("squidaio_large_bufs", AIO_LARGE_BUFS); |
62e76326 | 344 | |
b001e822 | 345 | squidaio_medium_bufs = new MemAllocatorProxy("squidaio_medium_bufs", AIO_MEDIUM_BUFS); |
62e76326 | 346 | |
b001e822 | 347 | squidaio_small_bufs = new MemAllocatorProxy("squidaio_small_bufs", AIO_SMALL_BUFS); |
62e76326 | 348 | |
b001e822 | 349 | squidaio_tiny_bufs = new MemAllocatorProxy("squidaio_tiny_bufs", AIO_TINY_BUFS); |
62e76326 | 350 | |
b001e822 | 351 | squidaio_micro_bufs = new MemAllocatorProxy("squidaio_micro_bufs", AIO_MICRO_BUFS); |
c04d4f40 | 352 | |
353 | squidaio_initialised = 1; | |
cd748f27 | 354 | } |
355 | ||
d06925a4 | 356 | void |
357 | squidaio_shutdown(void) | |
358 | { | |
359 | if (!squidaio_initialised) | |
360 | return; | |
361 | ||
362 | /* This is the same as in squidaio_sync */ | |
363 | do { | |
364 | squidaio_poll_queues(); | |
365 | } while (request_queue_len > 0); | |
366 | ||
367 | CommIO::NotifyIOClose(); | |
368 | ||
369 | squidaio_initialised = 0; | |
370 | } | |
cd748f27 | 371 | |
372 | static void * | |
c04d4f40 | 373 | squidaio_thread_loop(void *ptr) |
cd748f27 | 374 | { |
e6ccf245 | 375 | squidaio_thread_t *threadp = (squidaio_thread_t *)ptr; |
c04d4f40 | 376 | squidaio_request_t *request; |
e6ccf245 | 377 | sigset_t newSig; |
cd748f27 | 378 | |
379 | /* | |
380 | * Make sure to ignore signals which may possibly get sent to | |
381 | * the parent squid thread. Causes havoc with mutex's and | |
382 | * condition waits otherwise | |
383 | */ | |
384 | ||
e6ccf245 | 385 | sigemptyset(&newSig); |
386 | sigaddset(&newSig, SIGPIPE); | |
387 | sigaddset(&newSig, SIGCHLD); | |
cd748f27 | 388 | #ifdef _SQUID_LINUX_THREADS_ |
62e76326 | 389 | |
e6ccf245 | 390 | sigaddset(&newSig, SIGQUIT); |
391 | sigaddset(&newSig, SIGTRAP); | |
cd748f27 | 392 | #else |
62e76326 | 393 | |
e6ccf245 | 394 | sigaddset(&newSig, SIGUSR1); |
395 | sigaddset(&newSig, SIGUSR2); | |
cd748f27 | 396 | #endif |
62e76326 | 397 | |
e6ccf245 | 398 | sigaddset(&newSig, SIGHUP); |
399 | sigaddset(&newSig, SIGTERM); | |
400 | sigaddset(&newSig, SIGINT); | |
401 | sigaddset(&newSig, SIGALRM); | |
402 | pthread_sigmask(SIG_BLOCK, &newSig, NULL); | |
cd748f27 | 403 | |
cd748f27 | 404 | while (1) { |
62e76326 | 405 | threadp->current_req = request = NULL; |
406 | request = NULL; | |
407 | /* Get a request to process */ | |
408 | threadp->status = _THREAD_WAITING; | |
409 | pthread_mutex_lock(&request_queue.mutex); | |
410 | ||
411 | while (!request_queue.head) { | |
412 | pthread_cond_wait(&request_queue.cond, &request_queue.mutex); | |
413 | } | |
414 | ||
415 | request = request_queue.head; | |
416 | ||
417 | if (request) | |
418 | request_queue.head = request->next; | |
419 | ||
420 | if (!request_queue.head) | |
421 | request_queue.tailp = &request_queue.head; | |
422 | ||
423 | pthread_mutex_unlock(&request_queue.mutex); | |
424 | ||
425 | /* process the request */ | |
426 | threadp->status = _THREAD_BUSY; | |
427 | ||
428 | request->next = NULL; | |
429 | ||
430 | threadp->current_req = request; | |
431 | ||
432 | errno = 0; | |
433 | ||
434 | if (!request->cancelled) { | |
435 | switch (request->request_type) { | |
436 | ||
437 | case _AIO_OP_OPEN: | |
438 | squidaio_do_open(request); | |
439 | break; | |
440 | ||
441 | case _AIO_OP_READ: | |
442 | squidaio_do_read(request); | |
443 | break; | |
444 | ||
445 | case _AIO_OP_WRITE: | |
446 | squidaio_do_write(request); | |
447 | break; | |
448 | ||
449 | case _AIO_OP_CLOSE: | |
450 | squidaio_do_close(request); | |
451 | break; | |
452 | ||
453 | case _AIO_OP_UNLINK: | |
454 | squidaio_do_unlink(request); | |
455 | break; | |
456 | ||
457 | case _AIO_OP_TRUNCATE: | |
458 | squidaio_do_truncate(request); | |
459 | break; | |
cd748f27 | 460 | #if AIO_OPENDIR /* Opendir not implemented yet */ |
62e76326 | 461 | |
462 | case _AIO_OP_OPENDIR: | |
463 | squidaio_do_opendir(request); | |
464 | break; | |
cd748f27 | 465 | #endif |
62e76326 | 466 | |
467 | case _AIO_OP_STAT: | |
468 | squidaio_do_stat(request); | |
469 | break; | |
470 | ||
471 | default: | |
472 | request->ret = -1; | |
473 | request->err = EINVAL; | |
474 | break; | |
475 | } | |
476 | } else { /* cancelled */ | |
477 | request->ret = -1; | |
478 | request->err = EINTR; | |
479 | } | |
480 | ||
481 | threadp->status = _THREAD_DONE; | |
482 | /* put the request in the done queue */ | |
483 | pthread_mutex_lock(&done_queue.mutex); | |
484 | *done_queue.tailp = request; | |
485 | done_queue.tailp = &request->next; | |
486 | pthread_mutex_unlock(&done_queue.mutex); | |
487 | CommIO::NotifyIOCompleted(); | |
488 | threadp->requests++; | |
55f0e6f7 | 489 | } /* while forever */ |
62e76326 | 490 | |
cd748f27 | 491 | return NULL; |
c04d4f40 | 492 | } /* squidaio_thread_loop */ |
cd748f27 | 493 | |
494 | static void | |
c04d4f40 | 495 | squidaio_queue_request(squidaio_request_t * request) |
cd748f27 | 496 | { |
cd748f27 | 497 | static int high_start = 0; |
99cce4cb | 498 | debug(43, 9) ("squidaio_queue_request: %p type=%d result=%p\n", |
62e76326 | 499 | request, request->request_type, request->resultp); |
cd748f27 | 500 | /* Mark it as not executed (failing result, no error) */ |
55f0e6f7 | 501 | request->ret = -1; |
502 | request->err = 0; | |
503 | /* Internal housekeeping */ | |
504 | request_queue_len += 1; | |
505 | request->resultp->_data = request; | |
506 | /* Play some tricks with the request_queue2 queue */ | |
507 | request->next = NULL; | |
62e76326 | 508 | |
40173038 | 509 | if (pthread_mutex_trylock(&request_queue.mutex) == 0) { |
62e76326 | 510 | if (request_queue2.head) { |
511 | /* Grab blocked requests */ | |
512 | *request_queue.tailp = request_queue2.head; | |
513 | request_queue.tailp = request_queue2.tailp; | |
514 | } | |
515 | ||
516 | /* Enqueue request */ | |
517 | *request_queue.tailp = request; | |
518 | ||
519 | request_queue.tailp = &request->next; | |
520 | ||
521 | pthread_cond_signal(&request_queue.cond); | |
522 | ||
523 | pthread_mutex_unlock(&request_queue.mutex); | |
524 | ||
525 | if (request_queue2.head) { | |
526 | /* Clear queue of blocked requests */ | |
527 | request_queue2.head = NULL; | |
528 | request_queue2.tailp = &request_queue2.head; | |
529 | } | |
40173038 | 530 | } else { |
62e76326 | 531 | /* Oops, the request queue is blocked, use request_queue2 */ |
532 | *request_queue2.tailp = request; | |
533 | request_queue2.tailp = &request->next; | |
55f0e6f7 | 534 | } |
62e76326 | 535 | |
55f0e6f7 | 536 | if (request_queue2.head) { |
62e76326 | 537 | static int filter = 0; |
538 | static int filter_limit = 8; | |
539 | ||
540 | if (++filter >= filter_limit) { | |
541 | filter_limit += filter; | |
542 | filter = 0; | |
543 | debug(43, 1) ("squidaio_queue_request: WARNING - Queue congestion\n"); | |
544 | } | |
cd748f27 | 545 | } |
62e76326 | 546 | |
cd748f27 | 547 | /* Warn if out of threads */ |
55f0e6f7 | 548 | if (request_queue_len > MAGIC1) { |
62e76326 | 549 | static int last_warn = 0; |
550 | static int queue_high, queue_low; | |
551 | ||
552 | if (high_start == 0) { | |
553 | high_start = squid_curtime; | |
554 | queue_high = request_queue_len; | |
555 | queue_low = request_queue_len; | |
556 | } | |
557 | ||
558 | if (request_queue_len > queue_high) | |
559 | queue_high = request_queue_len; | |
560 | ||
561 | if (request_queue_len < queue_low) | |
562 | queue_low = request_queue_len; | |
563 | ||
564 | if (squid_curtime >= (last_warn + 15) && | |
565 | squid_curtime >= (high_start + 5)) { | |
566 | debug(43, 1) ("squidaio_queue_request: WARNING - Disk I/O overloading\n"); | |
567 | ||
568 | if (squid_curtime >= (high_start + 15)) | |
569 | debug(43, 1) ("squidaio_queue_request: Queue Length: current=%d, high=%d, low=%d, duration=%ld\n", | |
570 | request_queue_len, queue_high, queue_low, (long int) (squid_curtime - high_start)); | |
571 | ||
572 | last_warn = squid_curtime; | |
573 | } | |
cd748f27 | 574 | } else { |
62e76326 | 575 | high_start = 0; |
cd748f27 | 576 | } |
62e76326 | 577 | |
55f0e6f7 | 578 | /* Warn if seriously overloaded */ |
cd748f27 | 579 | if (request_queue_len > RIDICULOUS_LENGTH) { |
62e76326 | 580 | debug(43, 0) ("squidaio_queue_request: Async request queue growing uncontrollably!\n"); |
581 | debug(43, 0) ("squidaio_queue_request: Syncing pending I/O operations.. (blocking)\n"); | |
582 | squidaio_sync(); | |
583 | debug(43, 0) ("squidaio_queue_request: Synced\n"); | |
cd748f27 | 584 | } |
c04d4f40 | 585 | } /* squidaio_queue_request */ |
cd748f27 | 586 | |
cd748f27 | 587 | static void |
c04d4f40 | 588 | squidaio_cleanup_request(squidaio_request_t * requestp) |
cd748f27 | 589 | { |
c04d4f40 | 590 | squidaio_result_t *resultp = requestp->resultp; |
cd748f27 | 591 | int cancelled = requestp->cancelled; |
592 | ||
593 | /* Free allocated structures and copy data back to user space if the */ | |
594 | /* request hasn't been cancelled */ | |
62e76326 | 595 | |
cd748f27 | 596 | switch (requestp->request_type) { |
62e76326 | 597 | |
cd748f27 | 598 | case _AIO_OP_STAT: |
62e76326 | 599 | |
600 | if (!cancelled && requestp->ret == 0) | |
601 | ||
602 | xmemcpy(requestp->statp, requestp->tmpstatp, sizeof(struct stat)); | |
603 | ||
604 | squidaio_xfree(requestp->tmpstatp, sizeof(struct stat)); | |
605 | ||
606 | squidaio_xstrfree(requestp->path); | |
607 | ||
608 | break; | |
609 | ||
cd748f27 | 610 | case _AIO_OP_OPEN: |
62e76326 | 611 | if (cancelled && requestp->ret >= 0) |
612 | /* The open() was cancelled but completed */ | |
613 | close(requestp->ret); | |
614 | ||
615 | squidaio_xstrfree(requestp->path); | |
616 | ||
617 | break; | |
618 | ||
cd748f27 | 619 | case _AIO_OP_CLOSE: |
62e76326 | 620 | if (cancelled && requestp->ret < 0) |
621 | /* The close() was cancelled and never got executed */ | |
622 | close(requestp->fd); | |
623 | ||
624 | break; | |
625 | ||
cd748f27 | 626 | case _AIO_OP_UNLINK: |
62e76326 | 627 | |
15a47d1d | 628 | case _AIO_OP_TRUNCATE: |
62e76326 | 629 | |
cd748f27 | 630 | case _AIO_OP_OPENDIR: |
62e76326 | 631 | squidaio_xstrfree(requestp->path); |
632 | ||
633 | break; | |
634 | ||
cd748f27 | 635 | case _AIO_OP_READ: |
62e76326 | 636 | break; |
637 | ||
cd748f27 | 638 | case _AIO_OP_WRITE: |
62e76326 | 639 | break; |
640 | ||
cd748f27 | 641 | default: |
62e76326 | 642 | break; |
cd748f27 | 643 | } |
62e76326 | 644 | |
cd748f27 | 645 | if (resultp != NULL && !cancelled) { |
62e76326 | 646 | resultp->aio_return = requestp->ret; |
647 | resultp->aio_errno = requestp->err; | |
cd748f27 | 648 | } |
62e76326 | 649 | |
b001e822 | 650 | squidaio_request_pool->free(requestp); |
c04d4f40 | 651 | } /* squidaio_cleanup_request */ |
cd748f27 | 652 | |
653 | ||
654 | int | |
c04d4f40 | 655 | squidaio_cancel(squidaio_result_t * resultp) |
cd748f27 | 656 | { |
e6ccf245 | 657 | squidaio_request_t *request = (squidaio_request_t *)resultp->_data; |
cd748f27 | 658 | |
55f0e6f7 | 659 | if (request && request->resultp == resultp) { |
62e76326 | 660 | debug(43, 9) ("squidaio_cancel: %p type=%d result=%p\n", |
661 | request, request->request_type, request->resultp); | |
662 | request->cancelled = 1; | |
663 | request->resultp = NULL; | |
664 | resultp->_data = NULL; | |
665 | resultp->result_type = _AIO_OP_NONE; | |
666 | return 0; | |
55f0e6f7 | 667 | } |
62e76326 | 668 | |
cd748f27 | 669 | return 1; |
c04d4f40 | 670 | } /* squidaio_cancel */ |
cd748f27 | 671 | |
672 | ||
673 | int | |
c04d4f40 | 674 | squidaio_open(const char *path, int oflag, mode_t mode, squidaio_result_t * resultp) |
cd748f27 | 675 | { |
c04d4f40 | 676 | squidaio_request_t *requestp; |
cd748f27 | 677 | |
b001e822 | 678 | requestp = (squidaio_request_t *)squidaio_request_pool->alloc(); |
62e76326 | 679 | |
c04d4f40 | 680 | requestp->path = (char *) squidaio_xstrdup(path); |
62e76326 | 681 | |
cd748f27 | 682 | requestp->oflag = oflag; |
62e76326 | 683 | |
cd748f27 | 684 | requestp->mode = mode; |
62e76326 | 685 | |
cd748f27 | 686 | requestp->resultp = resultp; |
62e76326 | 687 | |
cd748f27 | 688 | requestp->request_type = _AIO_OP_OPEN; |
62e76326 | 689 | |
cd748f27 | 690 | requestp->cancelled = 0; |
62e76326 | 691 | |
12e137b0 | 692 | resultp->result_type = _AIO_OP_OPEN; |
cd748f27 | 693 | |
c04d4f40 | 694 | squidaio_queue_request(requestp); |
62e76326 | 695 | |
cd748f27 | 696 | return 0; |
697 | } | |
698 | ||
699 | ||
700 | static void | |
c04d4f40 | 701 | squidaio_do_open(squidaio_request_t * requestp) |
cd748f27 | 702 | { |
703 | requestp->ret = open(requestp->path, requestp->oflag, requestp->mode); | |
704 | requestp->err = errno; | |
705 | } | |
706 | ||
707 | ||
708 | int | |
c04d4f40 | 709 | squidaio_read(int fd, char *bufp, int bufs, off_t offset, int whence, squidaio_result_t * resultp) |
cd748f27 | 710 | { |
c04d4f40 | 711 | squidaio_request_t *requestp; |
cd748f27 | 712 | |
b001e822 | 713 | requestp = (squidaio_request_t *)squidaio_request_pool->alloc(); |
62e76326 | 714 | |
cd748f27 | 715 | requestp->fd = fd; |
62e76326 | 716 | |
cd748f27 | 717 | requestp->bufferp = bufp; |
62e76326 | 718 | |
cd748f27 | 719 | requestp->buflen = bufs; |
62e76326 | 720 | |
cd748f27 | 721 | requestp->offset = offset; |
62e76326 | 722 | |
cd748f27 | 723 | requestp->whence = whence; |
62e76326 | 724 | |
cd748f27 | 725 | requestp->resultp = resultp; |
62e76326 | 726 | |
cd748f27 | 727 | requestp->request_type = _AIO_OP_READ; |
62e76326 | 728 | |
cd748f27 | 729 | requestp->cancelled = 0; |
62e76326 | 730 | |
12e137b0 | 731 | resultp->result_type = _AIO_OP_READ; |
cd748f27 | 732 | |
c04d4f40 | 733 | squidaio_queue_request(requestp); |
62e76326 | 734 | |
cd748f27 | 735 | return 0; |
736 | } | |
737 | ||
738 | ||
739 | static void | |
c04d4f40 | 740 | squidaio_do_read(squidaio_request_t * requestp) |
cd748f27 | 741 | { |
742 | lseek(requestp->fd, requestp->offset, requestp->whence); | |
211f1d0b | 743 | requestp->ret = read(requestp->fd, requestp->bufferp, requestp->buflen); |
cd748f27 | 744 | requestp->err = errno; |
745 | } | |
746 | ||
747 | ||
748 | int | |
c04d4f40 | 749 | squidaio_write(int fd, char *bufp, int bufs, off_t offset, int whence, squidaio_result_t * resultp) |
cd748f27 | 750 | { |
c04d4f40 | 751 | squidaio_request_t *requestp; |
cd748f27 | 752 | |
b001e822 | 753 | requestp = (squidaio_request_t *)squidaio_request_pool->alloc(); |
62e76326 | 754 | |
cd748f27 | 755 | requestp->fd = fd; |
62e76326 | 756 | |
d06925a4 | 757 | requestp->bufferp = bufp; |
62e76326 | 758 | |
cd748f27 | 759 | requestp->buflen = bufs; |
62e76326 | 760 | |
cd748f27 | 761 | requestp->offset = offset; |
62e76326 | 762 | |
cd748f27 | 763 | requestp->whence = whence; |
62e76326 | 764 | |
cd748f27 | 765 | requestp->resultp = resultp; |
62e76326 | 766 | |
cd748f27 | 767 | requestp->request_type = _AIO_OP_WRITE; |
62e76326 | 768 | |
cd748f27 | 769 | requestp->cancelled = 0; |
62e76326 | 770 | |
12e137b0 | 771 | resultp->result_type = _AIO_OP_WRITE; |
cd748f27 | 772 | |
c04d4f40 | 773 | squidaio_queue_request(requestp); |
62e76326 | 774 | |
cd748f27 | 775 | return 0; |
776 | } | |
777 | ||
778 | ||
779 | static void | |
c04d4f40 | 780 | squidaio_do_write(squidaio_request_t * requestp) |
cd748f27 | 781 | { |
d06925a4 | 782 | requestp->ret = write(requestp->fd, requestp->bufferp, requestp->buflen); |
cd748f27 | 783 | requestp->err = errno; |
784 | } | |
785 | ||
786 | ||
787 | int | |
c04d4f40 | 788 | squidaio_close(int fd, squidaio_result_t * resultp) |
cd748f27 | 789 | { |
c04d4f40 | 790 | squidaio_request_t *requestp; |
cd748f27 | 791 | |
b001e822 | 792 | requestp = (squidaio_request_t *)squidaio_request_pool->alloc(); |
62e76326 | 793 | |
cd748f27 | 794 | requestp->fd = fd; |
62e76326 | 795 | |
cd748f27 | 796 | requestp->resultp = resultp; |
62e76326 | 797 | |
cd748f27 | 798 | requestp->request_type = _AIO_OP_CLOSE; |
62e76326 | 799 | |
cd748f27 | 800 | requestp->cancelled = 0; |
62e76326 | 801 | |
12e137b0 | 802 | resultp->result_type = _AIO_OP_CLOSE; |
cd748f27 | 803 | |
c04d4f40 | 804 | squidaio_queue_request(requestp); |
62e76326 | 805 | |
cd748f27 | 806 | return 0; |
807 | } | |
808 | ||
809 | ||
810 | static void | |
c04d4f40 | 811 | squidaio_do_close(squidaio_request_t * requestp) |
cd748f27 | 812 | { |
813 | requestp->ret = close(requestp->fd); | |
814 | requestp->err = errno; | |
815 | } | |
816 | ||
817 | ||
818 | int | |
62e76326 | 819 | |
c04d4f40 | 820 | squidaio_stat(const char *path, struct stat *sb, squidaio_result_t * resultp) |
cd748f27 | 821 | { |
c04d4f40 | 822 | squidaio_request_t *requestp; |
cd748f27 | 823 | |
b001e822 | 824 | requestp = (squidaio_request_t *)squidaio_request_pool->alloc(); |
62e76326 | 825 | |
c04d4f40 | 826 | requestp->path = (char *) squidaio_xstrdup(path); |
62e76326 | 827 | |
cd748f27 | 828 | requestp->statp = sb; |
62e76326 | 829 | |
c04d4f40 | 830 | requestp->tmpstatp = (struct stat *) squidaio_xmalloc(sizeof(struct stat)); |
62e76326 | 831 | |
cd748f27 | 832 | requestp->resultp = resultp; |
62e76326 | 833 | |
cd748f27 | 834 | requestp->request_type = _AIO_OP_STAT; |
62e76326 | 835 | |
cd748f27 | 836 | requestp->cancelled = 0; |
62e76326 | 837 | |
12e137b0 | 838 | resultp->result_type = _AIO_OP_STAT; |
cd748f27 | 839 | |
c04d4f40 | 840 | squidaio_queue_request(requestp); |
62e76326 | 841 | |
cd748f27 | 842 | return 0; |
843 | } | |
844 | ||
845 | ||
846 | static void | |
c04d4f40 | 847 | squidaio_do_stat(squidaio_request_t * requestp) |
cd748f27 | 848 | { |
849 | requestp->ret = stat(requestp->path, requestp->tmpstatp); | |
850 | requestp->err = errno; | |
851 | } | |
852 | ||
853 | ||
854 | int | |
c04d4f40 | 855 | squidaio_unlink(const char *path, squidaio_result_t * resultp) |
cd748f27 | 856 | { |
c04d4f40 | 857 | squidaio_request_t *requestp; |
cd748f27 | 858 | |
b001e822 | 859 | requestp = (squidaio_request_t *)squidaio_request_pool->alloc(); |
62e76326 | 860 | |
c04d4f40 | 861 | requestp->path = squidaio_xstrdup(path); |
62e76326 | 862 | |
cd748f27 | 863 | requestp->resultp = resultp; |
62e76326 | 864 | |
cd748f27 | 865 | requestp->request_type = _AIO_OP_UNLINK; |
62e76326 | 866 | |
cd748f27 | 867 | requestp->cancelled = 0; |
62e76326 | 868 | |
12e137b0 | 869 | resultp->result_type = _AIO_OP_UNLINK; |
cd748f27 | 870 | |
c04d4f40 | 871 | squidaio_queue_request(requestp); |
62e76326 | 872 | |
cd748f27 | 873 | return 0; |
874 | } | |
875 | ||
876 | ||
877 | static void | |
c04d4f40 | 878 | squidaio_do_unlink(squidaio_request_t * requestp) |
cd748f27 | 879 | { |
880 | requestp->ret = unlink(requestp->path); | |
881 | requestp->err = errno; | |
882 | } | |
883 | ||
15a47d1d | 884 | int |
c04d4f40 | 885 | squidaio_truncate(const char *path, off_t length, squidaio_result_t * resultp) |
15a47d1d | 886 | { |
c04d4f40 | 887 | squidaio_request_t *requestp; |
15a47d1d | 888 | |
b001e822 | 889 | requestp = (squidaio_request_t *)squidaio_request_pool->alloc(); |
62e76326 | 890 | |
c04d4f40 | 891 | requestp->path = (char *) squidaio_xstrdup(path); |
62e76326 | 892 | |
15a47d1d | 893 | requestp->offset = length; |
62e76326 | 894 | |
15a47d1d | 895 | requestp->resultp = resultp; |
62e76326 | 896 | |
15a47d1d | 897 | requestp->request_type = _AIO_OP_TRUNCATE; |
62e76326 | 898 | |
15a47d1d | 899 | requestp->cancelled = 0; |
62e76326 | 900 | |
12e137b0 | 901 | resultp->result_type = _AIO_OP_TRUNCATE; |
15a47d1d | 902 | |
c04d4f40 | 903 | squidaio_queue_request(requestp); |
62e76326 | 904 | |
15a47d1d | 905 | return 0; |
906 | } | |
907 | ||
908 | ||
909 | static void | |
c04d4f40 | 910 | squidaio_do_truncate(squidaio_request_t * requestp) |
15a47d1d | 911 | { |
912 | requestp->ret = truncate(requestp->path, requestp->offset); | |
913 | requestp->err = errno; | |
914 | } | |
915 | ||
cd748f27 | 916 | |
917 | #if AIO_OPENDIR | |
c04d4f40 | 918 | /* XXX squidaio_opendir NOT implemented yet.. */ |
cd748f27 | 919 | |
920 | int | |
c04d4f40 | 921 | squidaio_opendir(const char *path, squidaio_result_t * resultp) |
cd748f27 | 922 | { |
c04d4f40 | 923 | squidaio_request_t *requestp; |
cd748f27 | 924 | int len; |
925 | ||
b001e822 | 926 | requestp = squidaio_request_pool->alloc(); |
62e76326 | 927 | |
12e137b0 | 928 | resultp->result_type = _AIO_OP_OPENDIR; |
62e76326 | 929 | |
cd748f27 | 930 | return -1; |
931 | } | |
932 | ||
933 | static void | |
c04d4f40 | 934 | squidaio_do_opendir(squidaio_request_t * requestp) |
cd748f27 | 935 | { |
936 | /* NOT IMPLEMENTED */ | |
937 | } | |
938 | ||
939 | #endif | |
940 | ||
55f0e6f7 | 941 | static void |
c04d4f40 | 942 | squidaio_poll_queues(void) |
55f0e6f7 | 943 | { |
944 | /* kick "overflow" request queue */ | |
62e76326 | 945 | |
55f0e6f7 | 946 | if (request_queue2.head && |
62e76326 | 947 | pthread_mutex_trylock(&request_queue.mutex) == 0) { |
948 | *request_queue.tailp = request_queue2.head; | |
949 | request_queue.tailp = request_queue2.tailp; | |
950 | pthread_cond_signal(&request_queue.cond); | |
951 | pthread_mutex_unlock(&request_queue.mutex); | |
952 | request_queue2.head = NULL; | |
953 | request_queue2.tailp = &request_queue2.head; | |
55f0e6f7 | 954 | } |
62e76326 | 955 | |
55f0e6f7 | 956 | /* poll done queue */ |
957 | if (done_queue.head && pthread_mutex_trylock(&done_queue.mutex) == 0) { | |
62e76326 | 958 | |
959 | struct squidaio_request_t *requests = done_queue.head; | |
960 | done_queue.head = NULL; | |
961 | done_queue.tailp = &done_queue.head; | |
962 | pthread_mutex_unlock(&done_queue.mutex); | |
963 | *done_requests.tailp = requests; | |
964 | request_queue_len -= 1; | |
965 | ||
966 | while (requests->next) { | |
967 | requests = requests->next; | |
968 | request_queue_len -= 1; | |
969 | } | |
970 | ||
971 | done_requests.tailp = &requests->next; | |
55f0e6f7 | 972 | } |
55f0e6f7 | 973 | } |
cd748f27 | 974 | |
c04d4f40 | 975 | squidaio_result_t * |
976 | squidaio_poll_done(void) | |
cd748f27 | 977 | { |
c04d4f40 | 978 | squidaio_request_t *request; |
979 | squidaio_result_t *resultp; | |
cd748f27 | 980 | int cancelled; |
55f0e6f7 | 981 | int polled = 0; |
cd748f27 | 982 | |
62e76326 | 983 | AIO_REPOLL: |
55f0e6f7 | 984 | request = done_requests.head; |
62e76326 | 985 | |
55f0e6f7 | 986 | if (request == NULL && !polled) { |
62e76326 | 987 | CommIO::ResetNotifications(); |
988 | squidaio_poll_queues(); | |
989 | polled = 1; | |
990 | request = done_requests.head; | |
55f0e6f7 | 991 | } |
62e76326 | 992 | |
55f0e6f7 | 993 | if (!request) { |
62e76326 | 994 | return NULL; |
cd748f27 | 995 | } |
62e76326 | 996 | |
99cce4cb | 997 | debug(43, 9) ("squidaio_poll_done: %p type=%d result=%p\n", |
62e76326 | 998 | request, request->request_type, request->resultp); |
55f0e6f7 | 999 | done_requests.head = request->next; |
62e76326 | 1000 | |
55f0e6f7 | 1001 | if (!done_requests.head) |
62e76326 | 1002 | done_requests.tailp = &done_requests.head; |
1003 | ||
55f0e6f7 | 1004 | resultp = request->resultp; |
62e76326 | 1005 | |
55f0e6f7 | 1006 | cancelled = request->cancelled; |
62e76326 | 1007 | |
c04d4f40 | 1008 | squidaio_debug(request); |
62e76326 | 1009 | |
55f0e6f7 | 1010 | debug(43, 5) ("DONE: %d -> %d\n", request->ret, request->err); |
62e76326 | 1011 | |
c04d4f40 | 1012 | squidaio_cleanup_request(request); |
62e76326 | 1013 | |
cd748f27 | 1014 | if (cancelled) |
62e76326 | 1015 | goto AIO_REPOLL; |
1016 | ||
cd748f27 | 1017 | return resultp; |
c04d4f40 | 1018 | } /* squidaio_poll_done */ |
cd748f27 | 1019 | |
1020 | int | |
c04d4f40 | 1021 | squidaio_operations_pending(void) |
cd748f27 | 1022 | { |
55f0e6f7 | 1023 | return request_queue_len + (done_requests.head ? 1 : 0); |
cd748f27 | 1024 | } |
1025 | ||
1026 | int | |
c04d4f40 | 1027 | squidaio_sync(void) |
cd748f27 | 1028 | { |
55f0e6f7 | 1029 | /* XXX This might take a while if the queue is large.. */ |
62e76326 | 1030 | |
cd748f27 | 1031 | do { |
62e76326 | 1032 | squidaio_poll_queues(); |
cd748f27 | 1033 | } while (request_queue_len > 0); |
62e76326 | 1034 | |
c04d4f40 | 1035 | return squidaio_operations_pending(); |
cd748f27 | 1036 | } |
1037 | ||
1038 | int | |
c04d4f40 | 1039 | squidaio_get_queue_len(void) |
cd748f27 | 1040 | { |
1041 | return request_queue_len; | |
1042 | } | |
1043 | ||
1044 | static void | |
c04d4f40 | 1045 | squidaio_debug(squidaio_request_t * request) |
cd748f27 | 1046 | { |
55f0e6f7 | 1047 | switch (request->request_type) { |
62e76326 | 1048 | |
cd748f27 | 1049 | case _AIO_OP_OPEN: |
62e76326 | 1050 | debug(43, 5) ("OPEN of %s to FD %d\n", request->path, request->ret); |
1051 | break; | |
1052 | ||
cd748f27 | 1053 | case _AIO_OP_READ: |
62e76326 | 1054 | debug(43, 5) ("READ on fd: %d\n", request->fd); |
1055 | break; | |
1056 | ||
cd748f27 | 1057 | case _AIO_OP_WRITE: |
62e76326 | 1058 | debug(43, 5) ("WRITE on fd: %d\n", request->fd); |
1059 | break; | |
1060 | ||
cd748f27 | 1061 | case _AIO_OP_CLOSE: |
62e76326 | 1062 | debug(43, 5) ("CLOSE of fd: %d\n", request->fd); |
1063 | break; | |
1064 | ||
cd748f27 | 1065 | case _AIO_OP_UNLINK: |
62e76326 | 1066 | debug(43, 5) ("UNLINK of %s\n", request->path); |
1067 | break; | |
1068 | ||
15a47d1d | 1069 | case _AIO_OP_TRUNCATE: |
62e76326 | 1070 | debug(43, 5) ("UNLINK of %s\n", request->path); |
1071 | break; | |
1072 | ||
cd748f27 | 1073 | default: |
62e76326 | 1074 | break; |
cd748f27 | 1075 | } |
1076 | } | |
b0465494 | 1077 | |
1078 | void | |
1079 | squidaio_stats(StoreEntry * sentry) | |
1080 | { | |
1081 | squidaio_thread_t *threadp; | |
1082 | int i; | |
1083 | ||
1084 | if (!squidaio_initialised) | |
1085 | return; | |
1086 | ||
1087 | storeAppendPrintf(sentry, "\n\nThreads Status:\n"); | |
1088 | ||
1089 | storeAppendPrintf(sentry, "#\tID\t# Requests\n"); | |
1090 | ||
1091 | threadp = threads; | |
1092 | ||
1093 | for (i = 0; i < NUMTHREADS; i++) { | |
691aef5a | 1094 | storeAppendPrintf(sentry, "%i\t0x%lx\t%ld\n", i + 1, (unsigned long)threadp->thread, threadp->requests); |
b0465494 | 1095 | threadp = threadp->next; |
1096 | } | |
1097 | } |