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cd748f27 | 1 | /* |
985c86bc | 2 | * $Id: aiops.cc,v 1.7 2006/05/08 23:38:34 robertc 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" |
985c86bc | 54 | #include "SquidTime.h" |
cd748f27 | 55 | |
56 | #define RIDICULOUS_LENGTH 4096 | |
57 | ||
c04d4f40 | 58 | enum _squidaio_thread_status { |
cd748f27 | 59 | _THREAD_STARTING = 0, |
60 | _THREAD_WAITING, | |
61 | _THREAD_BUSY, | |
62 | _THREAD_FAILED, | |
63 | _THREAD_DONE | |
64 | }; | |
c04d4f40 | 65 | typedef enum _squidaio_thread_status squidaio_thread_status; |
cd748f27 | 66 | |
62e76326 | 67 | typedef struct squidaio_request_t |
68 | { | |
69 | ||
c04d4f40 | 70 | struct squidaio_request_t *next; |
71 | squidaio_request_type request_type; | |
cd748f27 | 72 | int cancelled; |
73 | char *path; | |
74 | int oflag; | |
75 | mode_t mode; | |
76 | int fd; | |
77 | char *bufferp; | |
cd748f27 | 78 | int buflen; |
79 | off_t offset; | |
80 | int whence; | |
81 | int ret; | |
82 | int err; | |
62e76326 | 83 | |
cd748f27 | 84 | struct stat *tmpstatp; |
62e76326 | 85 | |
cd748f27 | 86 | struct stat *statp; |
c04d4f40 | 87 | squidaio_result_t *resultp; |
62e76326 | 88 | } |
89 | ||
90 | squidaio_request_t; | |
cd748f27 | 91 | |
62e76326 | 92 | typedef struct squidaio_request_queue_t |
93 | { | |
55f0e6f7 | 94 | pthread_mutex_t mutex; |
95 | pthread_cond_t cond; | |
c04d4f40 | 96 | squidaio_request_t *volatile head; |
97 | squidaio_request_t *volatile *volatile tailp; | |
55f0e6f7 | 98 | unsigned long requests; |
f0debecb | 99 | unsigned long blocked; /* main failed to lock the queue */ |
62e76326 | 100 | } |
101 | ||
102 | squidaio_request_queue_t; | |
55f0e6f7 | 103 | |
c04d4f40 | 104 | typedef struct squidaio_thread_t squidaio_thread_t; |
62e76326 | 105 | |
106 | struct squidaio_thread_t | |
107 | { | |
c04d4f40 | 108 | squidaio_thread_t *next; |
cd748f27 | 109 | pthread_t thread; |
c04d4f40 | 110 | squidaio_thread_status status; |
62e76326 | 111 | |
c04d4f40 | 112 | struct squidaio_request_t *current_req; |
55f0e6f7 | 113 | unsigned long requests; |
114 | }; | |
cd748f27 | 115 | |
c04d4f40 | 116 | static void squidaio_queue_request(squidaio_request_t *); |
117 | static void squidaio_cleanup_request(squidaio_request_t *); | |
118 | static void *squidaio_thread_loop(void *); | |
119 | static void squidaio_do_open(squidaio_request_t *); | |
120 | static void squidaio_do_read(squidaio_request_t *); | |
121 | static void squidaio_do_write(squidaio_request_t *); | |
122 | static void squidaio_do_close(squidaio_request_t *); | |
123 | static void squidaio_do_stat(squidaio_request_t *); | |
efa3acd1 | 124 | #if USE_TRUNCATE |
c04d4f40 | 125 | static void squidaio_do_truncate(squidaio_request_t *); |
efa3acd1 | 126 | #else |
127 | static void squidaio_do_unlink(squidaio_request_t *); | |
128 | #endif | |
cd748f27 | 129 | #if AIO_OPENDIR |
c04d4f40 | 130 | static void *squidaio_do_opendir(squidaio_request_t *); |
cd748f27 | 131 | #endif |
c04d4f40 | 132 | static void squidaio_debug(squidaio_request_t *); |
133 | static void squidaio_poll_queues(void); | |
cd748f27 | 134 | |
c04d4f40 | 135 | static squidaio_thread_t *threads = NULL; |
136 | static int squidaio_initialised = 0; | |
cd748f27 | 137 | |
55f0e6f7 | 138 | |
58cd5bbd | 139 | #define AIO_LARGE_BUFS 16384 |
140 | #define AIO_MEDIUM_BUFS AIO_LARGE_BUFS >> 1 | |
141 | #define AIO_SMALL_BUFS AIO_LARGE_BUFS >> 2 | |
142 | #define AIO_TINY_BUFS AIO_LARGE_BUFS >> 3 | |
55f0e6f7 | 143 | #define AIO_MICRO_BUFS 128 |
58cd5bbd | 144 | |
b001e822 | 145 | static MemAllocatorProxy *squidaio_large_bufs = NULL; /* 16K */ |
146 | static MemAllocatorProxy *squidaio_medium_bufs = NULL; /* 8K */ | |
147 | static MemAllocatorProxy *squidaio_small_bufs = NULL; /* 4K */ | |
148 | static MemAllocatorProxy *squidaio_tiny_bufs = NULL; /* 2K */ | |
149 | static MemAllocatorProxy *squidaio_micro_bufs = NULL; /* 128K */ | |
58cd5bbd | 150 | |
cd748f27 | 151 | static int request_queue_len = 0; |
b001e822 | 152 | static MemAllocatorProxy *squidaio_request_pool = NULL; |
153 | static MemAllocatorProxy *squidaio_thread_pool = NULL; | |
c04d4f40 | 154 | static squidaio_request_queue_t request_queue; |
62e76326 | 155 | |
156 | static struct | |
157 | { | |
c04d4f40 | 158 | squidaio_request_t *head, **tailp; |
62e76326 | 159 | } |
f0debecb | 160 | |
62e76326 | 161 | request_queue2 = { |
162 | ||
163 | NULL, &request_queue2.head | |
164 | }; | |
c04d4f40 | 165 | static squidaio_request_queue_t done_queue; |
62e76326 | 166 | |
167 | static struct | |
168 | { | |
c04d4f40 | 169 | squidaio_request_t *head, **tailp; |
62e76326 | 170 | } |
f0debecb | 171 | |
62e76326 | 172 | done_requests = { |
173 | ||
174 | NULL, &done_requests.head | |
175 | }; | |
cd748f27 | 176 | static pthread_attr_t globattr; |
5e5c622b | 177 | #if HAVE_SCHED_H |
62e76326 | 178 | |
cd748f27 | 179 | static struct sched_param globsched; |
5e5c622b | 180 | #endif |
cd748f27 | 181 | static pthread_t main_thread; |
182 | ||
b001e822 | 183 | static MemAllocatorProxy * |
c04d4f40 | 184 | squidaio_get_pool(int size) |
58cd5bbd | 185 | { |
b001e822 | 186 | MemAllocatorProxy *p; |
62e76326 | 187 | |
58cd5bbd | 188 | if (size <= AIO_LARGE_BUFS) { |
62e76326 | 189 | if (size <= AIO_MICRO_BUFS) |
190 | p = squidaio_micro_bufs; | |
191 | else if (size <= AIO_TINY_BUFS) | |
192 | p = squidaio_tiny_bufs; | |
193 | else if (size <= AIO_SMALL_BUFS) | |
194 | p = squidaio_small_bufs; | |
195 | else if (size <= AIO_MEDIUM_BUFS) | |
196 | p = squidaio_medium_bufs; | |
197 | else | |
198 | p = squidaio_large_bufs; | |
58cd5bbd | 199 | } else |
62e76326 | 200 | p = NULL; |
201 | ||
58cd5bbd | 202 | return p; |
203 | } | |
204 | ||
211f1d0b | 205 | void * |
c04d4f40 | 206 | squidaio_xmalloc(int size) |
58cd5bbd | 207 | { |
208 | void *p; | |
b001e822 | 209 | MemAllocatorProxy *pool; |
58cd5bbd | 210 | |
c04d4f40 | 211 | if ((pool = squidaio_get_pool(size)) != NULL) { |
b001e822 | 212 | p = pool->alloc(); |
58cd5bbd | 213 | } else |
62e76326 | 214 | p = xmalloc(size); |
58cd5bbd | 215 | |
216 | return p; | |
217 | } | |
218 | ||
55f0e6f7 | 219 | static char * |
c04d4f40 | 220 | squidaio_xstrdup(const char *str) |
55f0e6f7 | 221 | { |
222 | char *p; | |
f0debecb | 223 | int len = strlen(str) + 1; |
55f0e6f7 | 224 | |
e6ccf245 | 225 | p = (char *)squidaio_xmalloc(len); |
55f0e6f7 | 226 | strncpy(p, str, len); |
227 | ||
228 | return p; | |
229 | } | |
230 | ||
211f1d0b | 231 | void |
c04d4f40 | 232 | squidaio_xfree(void *p, int size) |
58cd5bbd | 233 | { |
b001e822 | 234 | MemAllocatorProxy *pool; |
58cd5bbd | 235 | |
c04d4f40 | 236 | if ((pool = squidaio_get_pool(size)) != NULL) { |
b001e822 | 237 | pool->free(p); |
58cd5bbd | 238 | } else |
62e76326 | 239 | xfree(p); |
58cd5bbd | 240 | } |
241 | ||
55f0e6f7 | 242 | static void |
c04d4f40 | 243 | squidaio_xstrfree(char *str) |
55f0e6f7 | 244 | { |
b001e822 | 245 | MemAllocatorProxy *pool; |
f0debecb | 246 | int len = strlen(str) + 1; |
55f0e6f7 | 247 | |
c04d4f40 | 248 | if ((pool = squidaio_get_pool(len)) != NULL) { |
b001e822 | 249 | pool->free(str); |
55f0e6f7 | 250 | } else |
62e76326 | 251 | xfree(str); |
55f0e6f7 | 252 | } |
253 | ||
d06925a4 | 254 | void |
c04d4f40 | 255 | squidaio_init(void) |
cd748f27 | 256 | { |
257 | int i; | |
c04d4f40 | 258 | squidaio_thread_t *threadp; |
cd748f27 | 259 | |
c04d4f40 | 260 | if (squidaio_initialised) |
62e76326 | 261 | return; |
cd748f27 | 262 | |
263 | pthread_attr_init(&globattr); | |
62e76326 | 264 | |
cd748f27 | 265 | #if HAVE_PTHREAD_ATTR_SETSCOPE |
62e76326 | 266 | |
cd748f27 | 267 | pthread_attr_setscope(&globattr, PTHREAD_SCOPE_SYSTEM); |
62e76326 | 268 | |
cd748f27 | 269 | #endif |
5e5c622b | 270 | #if HAVE_SCHED_H |
62e76326 | 271 | |
cd748f27 | 272 | globsched.sched_priority = 1; |
62e76326 | 273 | |
5e5c622b | 274 | #endif |
62e76326 | 275 | |
cd748f27 | 276 | main_thread = pthread_self(); |
62e76326 | 277 | |
5e5c622b | 278 | #if HAVE_SCHED_H && HAVE_PTHREAD_SETSCHEDPARAM |
62e76326 | 279 | |
cd748f27 | 280 | pthread_setschedparam(main_thread, SCHED_OTHER, &globsched); |
62e76326 | 281 | |
cd748f27 | 282 | #endif |
5e5c622b | 283 | #if HAVE_SCHED_H |
62e76326 | 284 | |
cd748f27 | 285 | globsched.sched_priority = 2; |
62e76326 | 286 | |
5e5c622b | 287 | #endif |
288 | #if HAVE_SCHED_H && HAVE_PTHREAD_ATTR_SETSCHEDPARAM | |
62e76326 | 289 | |
cd748f27 | 290 | pthread_attr_setschedparam(&globattr, &globsched); |
62e76326 | 291 | |
cd748f27 | 292 | #endif |
293 | ||
55f0e6f7 | 294 | /* Initialize request queue */ |
295 | if (pthread_mutex_init(&(request_queue.mutex), NULL)) | |
62e76326 | 296 | fatal("Failed to create mutex"); |
297 | ||
55f0e6f7 | 298 | if (pthread_cond_init(&(request_queue.cond), NULL)) |
62e76326 | 299 | fatal("Failed to create condition variable"); |
300 | ||
55f0e6f7 | 301 | request_queue.head = NULL; |
62e76326 | 302 | |
55f0e6f7 | 303 | request_queue.tailp = &request_queue.head; |
62e76326 | 304 | |
55f0e6f7 | 305 | request_queue.requests = 0; |
62e76326 | 306 | |
55f0e6f7 | 307 | request_queue.blocked = 0; |
308 | ||
309 | /* Initialize done queue */ | |
310 | if (pthread_mutex_init(&(done_queue.mutex), NULL)) | |
62e76326 | 311 | fatal("Failed to create mutex"); |
312 | ||
55f0e6f7 | 313 | if (pthread_cond_init(&(done_queue.cond), NULL)) |
62e76326 | 314 | fatal("Failed to create condition variable"); |
315 | ||
55f0e6f7 | 316 | done_queue.head = NULL; |
62e76326 | 317 | |
55f0e6f7 | 318 | done_queue.tailp = &done_queue.head; |
62e76326 | 319 | |
55f0e6f7 | 320 | done_queue.requests = 0; |
62e76326 | 321 | |
55f0e6f7 | 322 | done_queue.blocked = 0; |
cd748f27 | 323 | |
55f0e6f7 | 324 | /* Create threads and get them to sit in their wait loop */ |
b001e822 | 325 | squidaio_thread_pool = new MemAllocatorProxy("aio_thread", sizeof(squidaio_thread_t)); |
62e76326 | 326 | |
9fbbe256 | 327 | assert(NUMTHREADS); |
62e76326 | 328 | |
cd748f27 | 329 | for (i = 0; i < NUMTHREADS; i++) { |
b001e822 | 330 | threadp = (squidaio_thread_t *)squidaio_thread_pool->alloc(); |
62e76326 | 331 | threadp->status = _THREAD_STARTING; |
332 | threadp->current_req = NULL; | |
333 | threadp->requests = 0; | |
334 | threadp->next = threads; | |
335 | threads = threadp; | |
336 | ||
337 | if (pthread_create(&threadp->thread, &globattr, squidaio_thread_loop, threadp)) { | |
338 | fprintf(stderr, "Thread creation failed\n"); | |
339 | threadp->status = _THREAD_FAILED; | |
340 | continue; | |
341 | } | |
cd748f27 | 342 | } |
343 | ||
344 | /* Create request pool */ | |
b001e822 | 345 | squidaio_request_pool = new MemAllocatorProxy("aio_request", sizeof(squidaio_request_t)); |
62e76326 | 346 | |
b001e822 | 347 | squidaio_large_bufs = new MemAllocatorProxy("squidaio_large_bufs", AIO_LARGE_BUFS); |
62e76326 | 348 | |
b001e822 | 349 | squidaio_medium_bufs = new MemAllocatorProxy("squidaio_medium_bufs", AIO_MEDIUM_BUFS); |
62e76326 | 350 | |
b001e822 | 351 | squidaio_small_bufs = new MemAllocatorProxy("squidaio_small_bufs", AIO_SMALL_BUFS); |
62e76326 | 352 | |
b001e822 | 353 | squidaio_tiny_bufs = new MemAllocatorProxy("squidaio_tiny_bufs", AIO_TINY_BUFS); |
62e76326 | 354 | |
b001e822 | 355 | squidaio_micro_bufs = new MemAllocatorProxy("squidaio_micro_bufs", AIO_MICRO_BUFS); |
c04d4f40 | 356 | |
357 | squidaio_initialised = 1; | |
cd748f27 | 358 | } |
359 | ||
d06925a4 | 360 | void |
361 | squidaio_shutdown(void) | |
362 | { | |
363 | if (!squidaio_initialised) | |
364 | return; | |
365 | ||
366 | /* This is the same as in squidaio_sync */ | |
367 | do { | |
368 | squidaio_poll_queues(); | |
369 | } while (request_queue_len > 0); | |
370 | ||
371 | CommIO::NotifyIOClose(); | |
372 | ||
373 | squidaio_initialised = 0; | |
374 | } | |
cd748f27 | 375 | |
376 | static void * | |
c04d4f40 | 377 | squidaio_thread_loop(void *ptr) |
cd748f27 | 378 | { |
e6ccf245 | 379 | squidaio_thread_t *threadp = (squidaio_thread_t *)ptr; |
c04d4f40 | 380 | squidaio_request_t *request; |
e6ccf245 | 381 | sigset_t newSig; |
cd748f27 | 382 | |
383 | /* | |
384 | * Make sure to ignore signals which may possibly get sent to | |
385 | * the parent squid thread. Causes havoc with mutex's and | |
386 | * condition waits otherwise | |
387 | */ | |
388 | ||
e6ccf245 | 389 | sigemptyset(&newSig); |
390 | sigaddset(&newSig, SIGPIPE); | |
391 | sigaddset(&newSig, SIGCHLD); | |
cd748f27 | 392 | #ifdef _SQUID_LINUX_THREADS_ |
62e76326 | 393 | |
e6ccf245 | 394 | sigaddset(&newSig, SIGQUIT); |
395 | sigaddset(&newSig, SIGTRAP); | |
cd748f27 | 396 | #else |
62e76326 | 397 | |
e6ccf245 | 398 | sigaddset(&newSig, SIGUSR1); |
399 | sigaddset(&newSig, SIGUSR2); | |
cd748f27 | 400 | #endif |
62e76326 | 401 | |
e6ccf245 | 402 | sigaddset(&newSig, SIGHUP); |
403 | sigaddset(&newSig, SIGTERM); | |
404 | sigaddset(&newSig, SIGINT); | |
405 | sigaddset(&newSig, SIGALRM); | |
406 | pthread_sigmask(SIG_BLOCK, &newSig, NULL); | |
cd748f27 | 407 | |
cd748f27 | 408 | while (1) { |
62e76326 | 409 | threadp->current_req = request = NULL; |
410 | request = NULL; | |
411 | /* Get a request to process */ | |
412 | threadp->status = _THREAD_WAITING; | |
413 | pthread_mutex_lock(&request_queue.mutex); | |
414 | ||
415 | while (!request_queue.head) { | |
416 | pthread_cond_wait(&request_queue.cond, &request_queue.mutex); | |
417 | } | |
418 | ||
419 | request = request_queue.head; | |
420 | ||
421 | if (request) | |
422 | request_queue.head = request->next; | |
423 | ||
424 | if (!request_queue.head) | |
425 | request_queue.tailp = &request_queue.head; | |
426 | ||
427 | pthread_mutex_unlock(&request_queue.mutex); | |
428 | ||
429 | /* process the request */ | |
430 | threadp->status = _THREAD_BUSY; | |
431 | ||
432 | request->next = NULL; | |
433 | ||
434 | threadp->current_req = request; | |
435 | ||
436 | errno = 0; | |
437 | ||
438 | if (!request->cancelled) { | |
439 | switch (request->request_type) { | |
440 | ||
441 | case _AIO_OP_OPEN: | |
442 | squidaio_do_open(request); | |
443 | break; | |
444 | ||
445 | case _AIO_OP_READ: | |
446 | squidaio_do_read(request); | |
447 | break; | |
448 | ||
449 | case _AIO_OP_WRITE: | |
450 | squidaio_do_write(request); | |
451 | break; | |
452 | ||
453 | case _AIO_OP_CLOSE: | |
454 | squidaio_do_close(request); | |
455 | break; | |
456 | ||
efa3acd1 | 457 | #if USE_TRUNCATE |
62e76326 | 458 | |
459 | case _AIO_OP_TRUNCATE: | |
460 | squidaio_do_truncate(request); | |
461 | break; | |
efa3acd1 | 462 | #else |
463 | ||
464 | case _AIO_OP_UNLINK: | |
465 | squidaio_do_unlink(request); | |
466 | break; | |
467 | ||
468 | #endif | |
cd748f27 | 469 | #if AIO_OPENDIR /* Opendir not implemented yet */ |
62e76326 | 470 | |
471 | case _AIO_OP_OPENDIR: | |
472 | squidaio_do_opendir(request); | |
473 | break; | |
cd748f27 | 474 | #endif |
62e76326 | 475 | |
476 | case _AIO_OP_STAT: | |
477 | squidaio_do_stat(request); | |
478 | break; | |
479 | ||
480 | default: | |
481 | request->ret = -1; | |
482 | request->err = EINVAL; | |
483 | break; | |
484 | } | |
485 | } else { /* cancelled */ | |
486 | request->ret = -1; | |
487 | request->err = EINTR; | |
488 | } | |
489 | ||
490 | threadp->status = _THREAD_DONE; | |
491 | /* put the request in the done queue */ | |
492 | pthread_mutex_lock(&done_queue.mutex); | |
493 | *done_queue.tailp = request; | |
494 | done_queue.tailp = &request->next; | |
495 | pthread_mutex_unlock(&done_queue.mutex); | |
496 | CommIO::NotifyIOCompleted(); | |
497 | threadp->requests++; | |
55f0e6f7 | 498 | } /* while forever */ |
62e76326 | 499 | |
cd748f27 | 500 | return NULL; |
c04d4f40 | 501 | } /* squidaio_thread_loop */ |
cd748f27 | 502 | |
503 | static void | |
c04d4f40 | 504 | squidaio_queue_request(squidaio_request_t * request) |
cd748f27 | 505 | { |
cd748f27 | 506 | static int high_start = 0; |
99cce4cb | 507 | debug(43, 9) ("squidaio_queue_request: %p type=%d result=%p\n", |
62e76326 | 508 | request, request->request_type, request->resultp); |
cd748f27 | 509 | /* Mark it as not executed (failing result, no error) */ |
55f0e6f7 | 510 | request->ret = -1; |
511 | request->err = 0; | |
512 | /* Internal housekeeping */ | |
513 | request_queue_len += 1; | |
514 | request->resultp->_data = request; | |
515 | /* Play some tricks with the request_queue2 queue */ | |
516 | request->next = NULL; | |
62e76326 | 517 | |
40173038 | 518 | if (pthread_mutex_trylock(&request_queue.mutex) == 0) { |
62e76326 | 519 | if (request_queue2.head) { |
520 | /* Grab blocked requests */ | |
521 | *request_queue.tailp = request_queue2.head; | |
522 | request_queue.tailp = request_queue2.tailp; | |
523 | } | |
524 | ||
525 | /* Enqueue request */ | |
526 | *request_queue.tailp = request; | |
527 | ||
528 | request_queue.tailp = &request->next; | |
529 | ||
530 | pthread_cond_signal(&request_queue.cond); | |
531 | ||
532 | pthread_mutex_unlock(&request_queue.mutex); | |
533 | ||
534 | if (request_queue2.head) { | |
535 | /* Clear queue of blocked requests */ | |
536 | request_queue2.head = NULL; | |
537 | request_queue2.tailp = &request_queue2.head; | |
538 | } | |
40173038 | 539 | } else { |
62e76326 | 540 | /* Oops, the request queue is blocked, use request_queue2 */ |
541 | *request_queue2.tailp = request; | |
542 | request_queue2.tailp = &request->next; | |
55f0e6f7 | 543 | } |
62e76326 | 544 | |
55f0e6f7 | 545 | if (request_queue2.head) { |
62e76326 | 546 | static int filter = 0; |
547 | static int filter_limit = 8; | |
548 | ||
549 | if (++filter >= filter_limit) { | |
550 | filter_limit += filter; | |
551 | filter = 0; | |
552 | debug(43, 1) ("squidaio_queue_request: WARNING - Queue congestion\n"); | |
553 | } | |
cd748f27 | 554 | } |
62e76326 | 555 | |
cd748f27 | 556 | /* Warn if out of threads */ |
55f0e6f7 | 557 | if (request_queue_len > MAGIC1) { |
62e76326 | 558 | static int last_warn = 0; |
559 | static int queue_high, queue_low; | |
560 | ||
561 | if (high_start == 0) { | |
562 | high_start = squid_curtime; | |
563 | queue_high = request_queue_len; | |
564 | queue_low = request_queue_len; | |
565 | } | |
566 | ||
567 | if (request_queue_len > queue_high) | |
568 | queue_high = request_queue_len; | |
569 | ||
570 | if (request_queue_len < queue_low) | |
571 | queue_low = request_queue_len; | |
572 | ||
573 | if (squid_curtime >= (last_warn + 15) && | |
574 | squid_curtime >= (high_start + 5)) { | |
575 | debug(43, 1) ("squidaio_queue_request: WARNING - Disk I/O overloading\n"); | |
576 | ||
577 | if (squid_curtime >= (high_start + 15)) | |
578 | debug(43, 1) ("squidaio_queue_request: Queue Length: current=%d, high=%d, low=%d, duration=%ld\n", | |
579 | request_queue_len, queue_high, queue_low, (long int) (squid_curtime - high_start)); | |
580 | ||
581 | last_warn = squid_curtime; | |
582 | } | |
cd748f27 | 583 | } else { |
62e76326 | 584 | high_start = 0; |
cd748f27 | 585 | } |
62e76326 | 586 | |
55f0e6f7 | 587 | /* Warn if seriously overloaded */ |
cd748f27 | 588 | if (request_queue_len > RIDICULOUS_LENGTH) { |
62e76326 | 589 | debug(43, 0) ("squidaio_queue_request: Async request queue growing uncontrollably!\n"); |
590 | debug(43, 0) ("squidaio_queue_request: Syncing pending I/O operations.. (blocking)\n"); | |
591 | squidaio_sync(); | |
592 | debug(43, 0) ("squidaio_queue_request: Synced\n"); | |
cd748f27 | 593 | } |
c04d4f40 | 594 | } /* squidaio_queue_request */ |
cd748f27 | 595 | |
cd748f27 | 596 | static void |
c04d4f40 | 597 | squidaio_cleanup_request(squidaio_request_t * requestp) |
cd748f27 | 598 | { |
c04d4f40 | 599 | squidaio_result_t *resultp = requestp->resultp; |
cd748f27 | 600 | int cancelled = requestp->cancelled; |
601 | ||
602 | /* Free allocated structures and copy data back to user space if the */ | |
603 | /* request hasn't been cancelled */ | |
62e76326 | 604 | |
cd748f27 | 605 | switch (requestp->request_type) { |
62e76326 | 606 | |
cd748f27 | 607 | case _AIO_OP_STAT: |
62e76326 | 608 | |
609 | if (!cancelled && requestp->ret == 0) | |
610 | ||
611 | xmemcpy(requestp->statp, requestp->tmpstatp, sizeof(struct stat)); | |
612 | ||
613 | squidaio_xfree(requestp->tmpstatp, sizeof(struct stat)); | |
614 | ||
615 | squidaio_xstrfree(requestp->path); | |
616 | ||
617 | break; | |
618 | ||
cd748f27 | 619 | case _AIO_OP_OPEN: |
62e76326 | 620 | if (cancelled && requestp->ret >= 0) |
621 | /* The open() was cancelled but completed */ | |
622 | close(requestp->ret); | |
623 | ||
624 | squidaio_xstrfree(requestp->path); | |
625 | ||
626 | break; | |
627 | ||
cd748f27 | 628 | case _AIO_OP_CLOSE: |
62e76326 | 629 | if (cancelled && requestp->ret < 0) |
630 | /* The close() was cancelled and never got executed */ | |
631 | close(requestp->fd); | |
632 | ||
633 | break; | |
634 | ||
cd748f27 | 635 | case _AIO_OP_UNLINK: |
62e76326 | 636 | |
15a47d1d | 637 | case _AIO_OP_TRUNCATE: |
62e76326 | 638 | |
cd748f27 | 639 | case _AIO_OP_OPENDIR: |
62e76326 | 640 | squidaio_xstrfree(requestp->path); |
641 | ||
642 | break; | |
643 | ||
cd748f27 | 644 | case _AIO_OP_READ: |
62e76326 | 645 | break; |
646 | ||
cd748f27 | 647 | case _AIO_OP_WRITE: |
62e76326 | 648 | break; |
649 | ||
cd748f27 | 650 | default: |
62e76326 | 651 | break; |
cd748f27 | 652 | } |
62e76326 | 653 | |
cd748f27 | 654 | if (resultp != NULL && !cancelled) { |
62e76326 | 655 | resultp->aio_return = requestp->ret; |
656 | resultp->aio_errno = requestp->err; | |
cd748f27 | 657 | } |
62e76326 | 658 | |
b001e822 | 659 | squidaio_request_pool->free(requestp); |
c04d4f40 | 660 | } /* squidaio_cleanup_request */ |
cd748f27 | 661 | |
662 | ||
663 | int | |
c04d4f40 | 664 | squidaio_cancel(squidaio_result_t * resultp) |
cd748f27 | 665 | { |
e6ccf245 | 666 | squidaio_request_t *request = (squidaio_request_t *)resultp->_data; |
cd748f27 | 667 | |
55f0e6f7 | 668 | if (request && request->resultp == resultp) { |
62e76326 | 669 | debug(43, 9) ("squidaio_cancel: %p type=%d result=%p\n", |
670 | request, request->request_type, request->resultp); | |
671 | request->cancelled = 1; | |
672 | request->resultp = NULL; | |
673 | resultp->_data = NULL; | |
674 | resultp->result_type = _AIO_OP_NONE; | |
675 | return 0; | |
55f0e6f7 | 676 | } |
62e76326 | 677 | |
cd748f27 | 678 | return 1; |
c04d4f40 | 679 | } /* squidaio_cancel */ |
cd748f27 | 680 | |
681 | ||
682 | int | |
c04d4f40 | 683 | squidaio_open(const char *path, int oflag, mode_t mode, squidaio_result_t * resultp) |
cd748f27 | 684 | { |
c04d4f40 | 685 | squidaio_request_t *requestp; |
cd748f27 | 686 | |
b001e822 | 687 | requestp = (squidaio_request_t *)squidaio_request_pool->alloc(); |
62e76326 | 688 | |
c04d4f40 | 689 | requestp->path = (char *) squidaio_xstrdup(path); |
62e76326 | 690 | |
cd748f27 | 691 | requestp->oflag = oflag; |
62e76326 | 692 | |
cd748f27 | 693 | requestp->mode = mode; |
62e76326 | 694 | |
cd748f27 | 695 | requestp->resultp = resultp; |
62e76326 | 696 | |
cd748f27 | 697 | requestp->request_type = _AIO_OP_OPEN; |
62e76326 | 698 | |
cd748f27 | 699 | requestp->cancelled = 0; |
62e76326 | 700 | |
12e137b0 | 701 | resultp->result_type = _AIO_OP_OPEN; |
cd748f27 | 702 | |
c04d4f40 | 703 | squidaio_queue_request(requestp); |
62e76326 | 704 | |
cd748f27 | 705 | return 0; |
706 | } | |
707 | ||
708 | ||
709 | static void | |
c04d4f40 | 710 | squidaio_do_open(squidaio_request_t * requestp) |
cd748f27 | 711 | { |
712 | requestp->ret = open(requestp->path, requestp->oflag, requestp->mode); | |
713 | requestp->err = errno; | |
714 | } | |
715 | ||
716 | ||
717 | int | |
c04d4f40 | 718 | squidaio_read(int fd, char *bufp, int bufs, off_t offset, int whence, squidaio_result_t * resultp) |
cd748f27 | 719 | { |
c04d4f40 | 720 | squidaio_request_t *requestp; |
cd748f27 | 721 | |
b001e822 | 722 | requestp = (squidaio_request_t *)squidaio_request_pool->alloc(); |
62e76326 | 723 | |
cd748f27 | 724 | requestp->fd = fd; |
62e76326 | 725 | |
cd748f27 | 726 | requestp->bufferp = bufp; |
62e76326 | 727 | |
cd748f27 | 728 | requestp->buflen = bufs; |
62e76326 | 729 | |
cd748f27 | 730 | requestp->offset = offset; |
62e76326 | 731 | |
cd748f27 | 732 | requestp->whence = whence; |
62e76326 | 733 | |
cd748f27 | 734 | requestp->resultp = resultp; |
62e76326 | 735 | |
cd748f27 | 736 | requestp->request_type = _AIO_OP_READ; |
62e76326 | 737 | |
cd748f27 | 738 | requestp->cancelled = 0; |
62e76326 | 739 | |
12e137b0 | 740 | resultp->result_type = _AIO_OP_READ; |
cd748f27 | 741 | |
c04d4f40 | 742 | squidaio_queue_request(requestp); |
62e76326 | 743 | |
cd748f27 | 744 | return 0; |
745 | } | |
746 | ||
747 | ||
748 | static void | |
c04d4f40 | 749 | squidaio_do_read(squidaio_request_t * requestp) |
cd748f27 | 750 | { |
751 | lseek(requestp->fd, requestp->offset, requestp->whence); | |
211f1d0b | 752 | requestp->ret = read(requestp->fd, requestp->bufferp, requestp->buflen); |
cd748f27 | 753 | requestp->err = errno; |
754 | } | |
755 | ||
756 | ||
757 | int | |
c04d4f40 | 758 | squidaio_write(int fd, char *bufp, int bufs, off_t offset, int whence, squidaio_result_t * resultp) |
cd748f27 | 759 | { |
c04d4f40 | 760 | squidaio_request_t *requestp; |
cd748f27 | 761 | |
b001e822 | 762 | requestp = (squidaio_request_t *)squidaio_request_pool->alloc(); |
62e76326 | 763 | |
cd748f27 | 764 | requestp->fd = fd; |
62e76326 | 765 | |
d06925a4 | 766 | requestp->bufferp = bufp; |
62e76326 | 767 | |
cd748f27 | 768 | requestp->buflen = bufs; |
62e76326 | 769 | |
cd748f27 | 770 | requestp->offset = offset; |
62e76326 | 771 | |
cd748f27 | 772 | requestp->whence = whence; |
62e76326 | 773 | |
cd748f27 | 774 | requestp->resultp = resultp; |
62e76326 | 775 | |
cd748f27 | 776 | requestp->request_type = _AIO_OP_WRITE; |
62e76326 | 777 | |
cd748f27 | 778 | requestp->cancelled = 0; |
62e76326 | 779 | |
12e137b0 | 780 | resultp->result_type = _AIO_OP_WRITE; |
cd748f27 | 781 | |
c04d4f40 | 782 | squidaio_queue_request(requestp); |
62e76326 | 783 | |
cd748f27 | 784 | return 0; |
785 | } | |
786 | ||
787 | ||
788 | static void | |
c04d4f40 | 789 | squidaio_do_write(squidaio_request_t * requestp) |
cd748f27 | 790 | { |
d06925a4 | 791 | requestp->ret = write(requestp->fd, requestp->bufferp, requestp->buflen); |
cd748f27 | 792 | requestp->err = errno; |
793 | } | |
794 | ||
795 | ||
796 | int | |
c04d4f40 | 797 | squidaio_close(int fd, squidaio_result_t * resultp) |
cd748f27 | 798 | { |
c04d4f40 | 799 | squidaio_request_t *requestp; |
cd748f27 | 800 | |
b001e822 | 801 | requestp = (squidaio_request_t *)squidaio_request_pool->alloc(); |
62e76326 | 802 | |
cd748f27 | 803 | requestp->fd = fd; |
62e76326 | 804 | |
cd748f27 | 805 | requestp->resultp = resultp; |
62e76326 | 806 | |
cd748f27 | 807 | requestp->request_type = _AIO_OP_CLOSE; |
62e76326 | 808 | |
cd748f27 | 809 | requestp->cancelled = 0; |
62e76326 | 810 | |
12e137b0 | 811 | resultp->result_type = _AIO_OP_CLOSE; |
cd748f27 | 812 | |
c04d4f40 | 813 | squidaio_queue_request(requestp); |
62e76326 | 814 | |
cd748f27 | 815 | return 0; |
816 | } | |
817 | ||
818 | ||
819 | static void | |
c04d4f40 | 820 | squidaio_do_close(squidaio_request_t * requestp) |
cd748f27 | 821 | { |
822 | requestp->ret = close(requestp->fd); | |
823 | requestp->err = errno; | |
824 | } | |
825 | ||
826 | ||
827 | int | |
62e76326 | 828 | |
c04d4f40 | 829 | squidaio_stat(const char *path, struct stat *sb, squidaio_result_t * resultp) |
cd748f27 | 830 | { |
c04d4f40 | 831 | squidaio_request_t *requestp; |
cd748f27 | 832 | |
b001e822 | 833 | requestp = (squidaio_request_t *)squidaio_request_pool->alloc(); |
62e76326 | 834 | |
c04d4f40 | 835 | requestp->path = (char *) squidaio_xstrdup(path); |
62e76326 | 836 | |
cd748f27 | 837 | requestp->statp = sb; |
62e76326 | 838 | |
c04d4f40 | 839 | requestp->tmpstatp = (struct stat *) squidaio_xmalloc(sizeof(struct stat)); |
62e76326 | 840 | |
cd748f27 | 841 | requestp->resultp = resultp; |
62e76326 | 842 | |
cd748f27 | 843 | requestp->request_type = _AIO_OP_STAT; |
62e76326 | 844 | |
cd748f27 | 845 | requestp->cancelled = 0; |
62e76326 | 846 | |
12e137b0 | 847 | resultp->result_type = _AIO_OP_STAT; |
cd748f27 | 848 | |
c04d4f40 | 849 | squidaio_queue_request(requestp); |
62e76326 | 850 | |
cd748f27 | 851 | return 0; |
852 | } | |
853 | ||
854 | ||
855 | static void | |
c04d4f40 | 856 | squidaio_do_stat(squidaio_request_t * requestp) |
cd748f27 | 857 | { |
858 | requestp->ret = stat(requestp->path, requestp->tmpstatp); | |
859 | requestp->err = errno; | |
860 | } | |
861 | ||
862 | ||
efa3acd1 | 863 | #if USE_TRUNCATE |
cd748f27 | 864 | int |
efa3acd1 | 865 | squidaio_truncate(const char *path, off_t length, squidaio_result_t * resultp) |
cd748f27 | 866 | { |
c04d4f40 | 867 | squidaio_request_t *requestp; |
cd748f27 | 868 | |
b001e822 | 869 | requestp = (squidaio_request_t *)squidaio_request_pool->alloc(); |
62e76326 | 870 | |
efa3acd1 | 871 | requestp->path = (char *) squidaio_xstrdup(path); |
872 | ||
873 | requestp->offset = length; | |
62e76326 | 874 | |
cd748f27 | 875 | requestp->resultp = resultp; |
62e76326 | 876 | |
efa3acd1 | 877 | requestp->request_type = _AIO_OP_TRUNCATE; |
62e76326 | 878 | |
cd748f27 | 879 | requestp->cancelled = 0; |
62e76326 | 880 | |
efa3acd1 | 881 | resultp->result_type = _AIO_OP_TRUNCATE; |
cd748f27 | 882 | |
c04d4f40 | 883 | squidaio_queue_request(requestp); |
62e76326 | 884 | |
cd748f27 | 885 | return 0; |
886 | } | |
887 | ||
888 | ||
889 | static void | |
efa3acd1 | 890 | squidaio_do_truncate(squidaio_request_t * requestp) |
cd748f27 | 891 | { |
efa3acd1 | 892 | requestp->ret = truncate(requestp->path, requestp->offset); |
cd748f27 | 893 | requestp->err = errno; |
894 | } | |
895 | ||
efa3acd1 | 896 | |
897 | #else | |
15a47d1d | 898 | int |
efa3acd1 | 899 | squidaio_unlink(const char *path, squidaio_result_t * resultp) |
15a47d1d | 900 | { |
c04d4f40 | 901 | squidaio_request_t *requestp; |
15a47d1d | 902 | |
b001e822 | 903 | requestp = (squidaio_request_t *)squidaio_request_pool->alloc(); |
62e76326 | 904 | |
efa3acd1 | 905 | requestp->path = squidaio_xstrdup(path); |
62e76326 | 906 | |
15a47d1d | 907 | requestp->resultp = resultp; |
62e76326 | 908 | |
efa3acd1 | 909 | requestp->request_type = _AIO_OP_UNLINK; |
62e76326 | 910 | |
15a47d1d | 911 | requestp->cancelled = 0; |
62e76326 | 912 | |
efa3acd1 | 913 | resultp->result_type = _AIO_OP_UNLINK; |
15a47d1d | 914 | |
c04d4f40 | 915 | squidaio_queue_request(requestp); |
62e76326 | 916 | |
15a47d1d | 917 | return 0; |
918 | } | |
919 | ||
920 | ||
921 | static void | |
efa3acd1 | 922 | squidaio_do_unlink(squidaio_request_t * requestp) |
15a47d1d | 923 | { |
efa3acd1 | 924 | requestp->ret = unlink(requestp->path); |
15a47d1d | 925 | requestp->err = errno; |
926 | } | |
927 | ||
efa3acd1 | 928 | #endif |
cd748f27 | 929 | |
930 | #if AIO_OPENDIR | |
c04d4f40 | 931 | /* XXX squidaio_opendir NOT implemented yet.. */ |
cd748f27 | 932 | |
933 | int | |
c04d4f40 | 934 | squidaio_opendir(const char *path, squidaio_result_t * resultp) |
cd748f27 | 935 | { |
c04d4f40 | 936 | squidaio_request_t *requestp; |
cd748f27 | 937 | int len; |
938 | ||
b001e822 | 939 | requestp = squidaio_request_pool->alloc(); |
62e76326 | 940 | |
12e137b0 | 941 | resultp->result_type = _AIO_OP_OPENDIR; |
62e76326 | 942 | |
cd748f27 | 943 | return -1; |
944 | } | |
945 | ||
946 | static void | |
c04d4f40 | 947 | squidaio_do_opendir(squidaio_request_t * requestp) |
cd748f27 | 948 | { |
949 | /* NOT IMPLEMENTED */ | |
950 | } | |
951 | ||
952 | #endif | |
953 | ||
55f0e6f7 | 954 | static void |
c04d4f40 | 955 | squidaio_poll_queues(void) |
55f0e6f7 | 956 | { |
957 | /* kick "overflow" request queue */ | |
62e76326 | 958 | |
55f0e6f7 | 959 | if (request_queue2.head && |
62e76326 | 960 | pthread_mutex_trylock(&request_queue.mutex) == 0) { |
961 | *request_queue.tailp = request_queue2.head; | |
962 | request_queue.tailp = request_queue2.tailp; | |
963 | pthread_cond_signal(&request_queue.cond); | |
964 | pthread_mutex_unlock(&request_queue.mutex); | |
965 | request_queue2.head = NULL; | |
966 | request_queue2.tailp = &request_queue2.head; | |
55f0e6f7 | 967 | } |
62e76326 | 968 | |
55f0e6f7 | 969 | /* poll done queue */ |
970 | if (done_queue.head && pthread_mutex_trylock(&done_queue.mutex) == 0) { | |
62e76326 | 971 | |
972 | struct squidaio_request_t *requests = done_queue.head; | |
973 | done_queue.head = NULL; | |
974 | done_queue.tailp = &done_queue.head; | |
975 | pthread_mutex_unlock(&done_queue.mutex); | |
976 | *done_requests.tailp = requests; | |
977 | request_queue_len -= 1; | |
978 | ||
979 | while (requests->next) { | |
980 | requests = requests->next; | |
981 | request_queue_len -= 1; | |
982 | } | |
983 | ||
984 | done_requests.tailp = &requests->next; | |
55f0e6f7 | 985 | } |
55f0e6f7 | 986 | } |
cd748f27 | 987 | |
c04d4f40 | 988 | squidaio_result_t * |
989 | squidaio_poll_done(void) | |
cd748f27 | 990 | { |
c04d4f40 | 991 | squidaio_request_t *request; |
992 | squidaio_result_t *resultp; | |
cd748f27 | 993 | int cancelled; |
55f0e6f7 | 994 | int polled = 0; |
cd748f27 | 995 | |
62e76326 | 996 | AIO_REPOLL: |
55f0e6f7 | 997 | request = done_requests.head; |
62e76326 | 998 | |
55f0e6f7 | 999 | if (request == NULL && !polled) { |
62e76326 | 1000 | CommIO::ResetNotifications(); |
1001 | squidaio_poll_queues(); | |
1002 | polled = 1; | |
1003 | request = done_requests.head; | |
55f0e6f7 | 1004 | } |
62e76326 | 1005 | |
55f0e6f7 | 1006 | if (!request) { |
62e76326 | 1007 | return NULL; |
cd748f27 | 1008 | } |
62e76326 | 1009 | |
99cce4cb | 1010 | debug(43, 9) ("squidaio_poll_done: %p type=%d result=%p\n", |
62e76326 | 1011 | request, request->request_type, request->resultp); |
55f0e6f7 | 1012 | done_requests.head = request->next; |
62e76326 | 1013 | |
55f0e6f7 | 1014 | if (!done_requests.head) |
62e76326 | 1015 | done_requests.tailp = &done_requests.head; |
1016 | ||
55f0e6f7 | 1017 | resultp = request->resultp; |
62e76326 | 1018 | |
55f0e6f7 | 1019 | cancelled = request->cancelled; |
62e76326 | 1020 | |
c04d4f40 | 1021 | squidaio_debug(request); |
62e76326 | 1022 | |
55f0e6f7 | 1023 | debug(43, 5) ("DONE: %d -> %d\n", request->ret, request->err); |
62e76326 | 1024 | |
c04d4f40 | 1025 | squidaio_cleanup_request(request); |
62e76326 | 1026 | |
cd748f27 | 1027 | if (cancelled) |
62e76326 | 1028 | goto AIO_REPOLL; |
1029 | ||
cd748f27 | 1030 | return resultp; |
c04d4f40 | 1031 | } /* squidaio_poll_done */ |
cd748f27 | 1032 | |
1033 | int | |
c04d4f40 | 1034 | squidaio_operations_pending(void) |
cd748f27 | 1035 | { |
55f0e6f7 | 1036 | return request_queue_len + (done_requests.head ? 1 : 0); |
cd748f27 | 1037 | } |
1038 | ||
1039 | int | |
c04d4f40 | 1040 | squidaio_sync(void) |
cd748f27 | 1041 | { |
55f0e6f7 | 1042 | /* XXX This might take a while if the queue is large.. */ |
62e76326 | 1043 | |
cd748f27 | 1044 | do { |
62e76326 | 1045 | squidaio_poll_queues(); |
cd748f27 | 1046 | } while (request_queue_len > 0); |
62e76326 | 1047 | |
c04d4f40 | 1048 | return squidaio_operations_pending(); |
cd748f27 | 1049 | } |
1050 | ||
1051 | int | |
c04d4f40 | 1052 | squidaio_get_queue_len(void) |
cd748f27 | 1053 | { |
1054 | return request_queue_len; | |
1055 | } | |
1056 | ||
1057 | static void | |
c04d4f40 | 1058 | squidaio_debug(squidaio_request_t * request) |
cd748f27 | 1059 | { |
55f0e6f7 | 1060 | switch (request->request_type) { |
62e76326 | 1061 | |
cd748f27 | 1062 | case _AIO_OP_OPEN: |
62e76326 | 1063 | debug(43, 5) ("OPEN of %s to FD %d\n", request->path, request->ret); |
1064 | break; | |
1065 | ||
cd748f27 | 1066 | case _AIO_OP_READ: |
62e76326 | 1067 | debug(43, 5) ("READ on fd: %d\n", request->fd); |
1068 | break; | |
1069 | ||
cd748f27 | 1070 | case _AIO_OP_WRITE: |
62e76326 | 1071 | debug(43, 5) ("WRITE on fd: %d\n", request->fd); |
1072 | break; | |
1073 | ||
cd748f27 | 1074 | case _AIO_OP_CLOSE: |
62e76326 | 1075 | debug(43, 5) ("CLOSE of fd: %d\n", request->fd); |
1076 | break; | |
1077 | ||
cd748f27 | 1078 | case _AIO_OP_UNLINK: |
62e76326 | 1079 | debug(43, 5) ("UNLINK of %s\n", request->path); |
1080 | break; | |
1081 | ||
15a47d1d | 1082 | case _AIO_OP_TRUNCATE: |
62e76326 | 1083 | debug(43, 5) ("UNLINK of %s\n", request->path); |
1084 | break; | |
1085 | ||
cd748f27 | 1086 | default: |
62e76326 | 1087 | break; |
cd748f27 | 1088 | } |
1089 | } | |
b0465494 | 1090 | |
1091 | void | |
1092 | squidaio_stats(StoreEntry * sentry) | |
1093 | { | |
1094 | squidaio_thread_t *threadp; | |
1095 | int i; | |
1096 | ||
1097 | if (!squidaio_initialised) | |
1098 | return; | |
1099 | ||
1100 | storeAppendPrintf(sentry, "\n\nThreads Status:\n"); | |
1101 | ||
1102 | storeAppendPrintf(sentry, "#\tID\t# Requests\n"); | |
1103 | ||
1104 | threadp = threads; | |
1105 | ||
1106 | for (i = 0; i < NUMTHREADS; i++) { | |
691aef5a | 1107 | storeAppendPrintf(sentry, "%i\t0x%lx\t%ld\n", i + 1, (unsigned long)threadp->thread, threadp->requests); |
b0465494 | 1108 | threadp = threadp->next; |
1109 | } | |
1110 | } |