Commit | Line | Data |
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10ba535a JA |
1 | #include <unistd.h> |
2 | #include <fcntl.h> | |
3 | #include <string.h> | |
4 | #include <signal.h> | |
5 | #include <time.h> | |
0c6e7517 | 6 | #include <assert.h> |
10ba535a JA |
7 | |
8 | #include "fio.h" | |
9 | #include "os.h" | |
10 | ||
5945b9b4 JA |
11 | /* |
12 | * Change this define to play with the timeout handling | |
13 | */ | |
14 | #undef FIO_USE_TIMEOUT | |
15 | ||
97601024 JA |
16 | struct io_completion_data { |
17 | int nr; /* input */ | |
97601024 JA |
18 | |
19 | int error; /* output */ | |
20 | unsigned long bytes_done[2]; /* output */ | |
21 | struct timeval time; /* output */ | |
22 | }; | |
23 | ||
10ba535a JA |
24 | /* |
25 | * The ->file_map[] contains a map of blocks we have or have not done io | |
26 | * to yet. Used to make sure we cover the entire range in a fair fashion. | |
27 | */ | |
28 | static int random_map_free(struct thread_data *td, struct fio_file *f, | |
29 | unsigned long long block) | |
30 | { | |
31 | unsigned int idx = RAND_MAP_IDX(td, f, block); | |
32 | unsigned int bit = RAND_MAP_BIT(td, f, block); | |
33 | ||
34 | return (f->file_map[idx] & (1UL << bit)) == 0; | |
35 | } | |
36 | ||
df415585 JA |
37 | /* |
38 | * Mark a given offset as used in the map. | |
39 | */ | |
9bf2061e | 40 | static void mark_random_map(struct thread_data *td, struct io_u *io_u) |
df415585 | 41 | { |
afdbe580 | 42 | unsigned int min_bs = td->rw_min_bs; |
9bf2061e | 43 | struct fio_file *f = io_u->file; |
a00735e6 JA |
44 | unsigned long long block; |
45 | unsigned int blocks; | |
c685b5b2 | 46 | unsigned int nr_blocks; |
df415585 | 47 | |
a00735e6 JA |
48 | block = io_u->offset / (unsigned long long) min_bs; |
49 | blocks = 0; | |
c685b5b2 JA |
50 | nr_blocks = (io_u->buflen + min_bs - 1) / min_bs; |
51 | ||
52 | while (blocks < nr_blocks) { | |
df415585 JA |
53 | unsigned int idx, bit; |
54 | ||
55 | if (!random_map_free(td, f, block)) | |
56 | break; | |
57 | ||
58 | idx = RAND_MAP_IDX(td, f, block); | |
59 | bit = RAND_MAP_BIT(td, f, block); | |
60 | ||
0032bf9f | 61 | fio_assert(td, idx < f->num_maps); |
df415585 JA |
62 | |
63 | f->file_map[idx] |= (1UL << bit); | |
64 | block++; | |
65 | blocks++; | |
66 | } | |
67 | ||
a00735e6 JA |
68 | if ((blocks * min_bs) < io_u->buflen) |
69 | io_u->buflen = blocks * min_bs; | |
df415585 JA |
70 | } |
71 | ||
10ba535a JA |
72 | /* |
73 | * Return the next free block in the map. | |
74 | */ | |
75 | static int get_next_free_block(struct thread_data *td, struct fio_file *f, | |
76 | unsigned long long *b) | |
77 | { | |
78 | int i; | |
79 | ||
c685b5b2 JA |
80 | i = f->last_free_lookup; |
81 | *b = (i * BLOCKS_PER_MAP); | |
ee88470c | 82 | while ((*b) * td->rw_min_bs < f->real_file_size) { |
10ba535a JA |
83 | if (f->file_map[i] != -1UL) { |
84 | *b += ffz(f->file_map[i]); | |
c685b5b2 | 85 | f->last_free_lookup = i; |
10ba535a JA |
86 | return 0; |
87 | } | |
88 | ||
89 | *b += BLOCKS_PER_MAP; | |
90 | i++; | |
91 | } | |
92 | ||
93 | return 1; | |
94 | } | |
95 | ||
96 | /* | |
97 | * For random io, generate a random new block and see if it's used. Repeat | |
98 | * until we find a free one. For sequential io, just return the end of | |
99 | * the last io issued. | |
100 | */ | |
9bf2061e | 101 | static int get_next_offset(struct thread_data *td, struct io_u *io_u) |
10ba535a | 102 | { |
9bf2061e | 103 | struct fio_file *f = io_u->file; |
c685b5b2 | 104 | const int ddir = io_u->ddir; |
10ba535a JA |
105 | unsigned long long b, rb; |
106 | long r; | |
107 | ||
413dd459 | 108 | if (td_random(td)) { |
f697125a | 109 | unsigned long long max_blocks = f->file_size / td->min_bs[ddir]; |
c685b5b2 | 110 | int loops = 5; |
10ba535a JA |
111 | |
112 | do { | |
113 | r = os_random_long(&td->random_state); | |
114 | b = ((max_blocks - 1) * r / (unsigned long long) (RAND_MAX+1.0)); | |
bb8895e0 JA |
115 | if (td->norandommap) |
116 | break; | |
a00735e6 | 117 | rb = b + (f->file_offset / td->min_bs[ddir]); |
10ba535a JA |
118 | loops--; |
119 | } while (!random_map_free(td, f, rb) && loops); | |
120 | ||
bca4ed4d JA |
121 | /* |
122 | * if we failed to retrieve a truly random offset within | |
123 | * the loops assigned, see if there are free ones left at all | |
124 | */ | |
125 | if (!loops && get_next_free_block(td, f, &b)) | |
126 | return 1; | |
10ba535a | 127 | } else |
a00735e6 | 128 | b = f->last_pos / td->min_bs[ddir]; |
10ba535a | 129 | |
c685b5b2 | 130 | io_u->offset = (b * td->min_bs[ddir]) + f->file_offset; |
bca4ed4d | 131 | if (io_u->offset >= f->real_file_size) |
10ba535a JA |
132 | return 1; |
133 | ||
134 | return 0; | |
135 | } | |
136 | ||
9bf2061e | 137 | static unsigned int get_next_buflen(struct thread_data *td, struct io_u *io_u) |
10ba535a | 138 | { |
9bf2061e | 139 | struct fio_file *f = io_u->file; |
bca4ed4d | 140 | const int ddir = io_u->ddir; |
10ba535a JA |
141 | unsigned int buflen; |
142 | long r; | |
143 | ||
a00735e6 JA |
144 | if (td->min_bs[ddir] == td->max_bs[ddir]) |
145 | buflen = td->min_bs[ddir]; | |
10ba535a JA |
146 | else { |
147 | r = os_random_long(&td->bsrange_state); | |
1e97cce9 | 148 | buflen = (unsigned int) (1 + (double) (td->max_bs[ddir] - 1) * r / (RAND_MAX + 1.0)); |
690adba3 | 149 | if (!td->bs_unaligned) |
a00735e6 | 150 | buflen = (buflen + td->min_bs[ddir] - 1) & ~(td->min_bs[ddir] - 1); |
10ba535a JA |
151 | } |
152 | ||
bca4ed4d | 153 | while (buflen + io_u->offset > f->real_file_size) { |
bca4ed4d JA |
154 | if (buflen == td->min_bs[ddir]) |
155 | return 0; | |
156 | ||
157 | buflen = td->min_bs[ddir]; | |
10ba535a JA |
158 | } |
159 | ||
160 | return buflen; | |
161 | } | |
162 | ||
163 | /* | |
164 | * Return the data direction for the next io_u. If the job is a | |
165 | * mixed read/write workload, check the rwmix cycle and switch if | |
166 | * necessary. | |
167 | */ | |
1e97cce9 | 168 | static enum fio_ddir get_rw_ddir(struct thread_data *td) |
10ba535a JA |
169 | { |
170 | if (td_rw(td)) { | |
171 | struct timeval now; | |
172 | unsigned long elapsed; | |
173 | ||
02bcaa8c | 174 | fio_gettime(&now, NULL); |
10ba535a JA |
175 | elapsed = mtime_since_now(&td->rwmix_switch); |
176 | ||
177 | /* | |
178 | * Check if it's time to seed a new data direction. | |
179 | */ | |
180 | if (elapsed >= td->rwmixcycle) { | |
181 | unsigned int v; | |
182 | long r; | |
183 | ||
184 | r = os_random_long(&td->rwmix_state); | |
185 | v = 1 + (int) (100.0 * (r / (RAND_MAX + 1.0))); | |
186 | if (v < td->rwmixread) | |
187 | td->rwmix_ddir = DDIR_READ; | |
188 | else | |
189 | td->rwmix_ddir = DDIR_WRITE; | |
190 | memcpy(&td->rwmix_switch, &now, sizeof(now)); | |
191 | } | |
192 | return td->rwmix_ddir; | |
193 | } else if (td_read(td)) | |
194 | return DDIR_READ; | |
195 | else | |
196 | return DDIR_WRITE; | |
197 | } | |
198 | ||
10ba535a JA |
199 | void put_io_u(struct thread_data *td, struct io_u *io_u) |
200 | { | |
0c6e7517 JA |
201 | assert((io_u->flags & IO_U_F_FREE) == 0); |
202 | io_u->flags |= IO_U_F_FREE; | |
203 | ||
10ba535a JA |
204 | io_u->file = NULL; |
205 | list_del(&io_u->list); | |
206 | list_add(&io_u->list, &td->io_u_freelist); | |
207 | td->cur_depth--; | |
208 | } | |
209 | ||
755200a3 JA |
210 | void requeue_io_u(struct thread_data *td, struct io_u **io_u) |
211 | { | |
212 | struct io_u *__io_u = *io_u; | |
213 | ||
4d2e0f49 JA |
214 | __io_u->flags |= IO_U_F_FREE; |
215 | __io_u->flags &= ~IO_U_F_FLIGHT; | |
216 | ||
755200a3 JA |
217 | list_del(&__io_u->list); |
218 | list_add_tail(&__io_u->list, &td->io_u_requeues); | |
219 | td->cur_depth--; | |
220 | *io_u = NULL; | |
221 | } | |
222 | ||
9bf2061e | 223 | static int fill_io_u(struct thread_data *td, struct io_u *io_u) |
10ba535a JA |
224 | { |
225 | /* | |
226 | * If using an iolog, grab next piece if any available. | |
227 | */ | |
228 | if (td->read_iolog) | |
229 | return read_iolog_get(td, io_u); | |
230 | ||
87dc1ab1 JA |
231 | /* |
232 | * see if it's time to sync | |
233 | */ | |
755200a3 JA |
234 | if (td->fsync_blocks && !(td->io_issues[DDIR_WRITE] % td->fsync_blocks) |
235 | && td->io_issues[DDIR_WRITE] && should_fsync(td)) { | |
87dc1ab1 | 236 | io_u->ddir = DDIR_SYNC; |
87dc1ab1 JA |
237 | return 0; |
238 | } | |
239 | ||
a00735e6 JA |
240 | io_u->ddir = get_rw_ddir(td); |
241 | ||
10ba535a | 242 | /* |
c685b5b2 JA |
243 | * No log, let the seq/rand engine retrieve the next buflen and |
244 | * position. | |
10ba535a | 245 | */ |
9bf2061e | 246 | if (get_next_offset(td, io_u)) |
bca4ed4d | 247 | return 1; |
10ba535a | 248 | |
9bf2061e | 249 | io_u->buflen = get_next_buflen(td, io_u); |
bca4ed4d JA |
250 | if (!io_u->buflen) |
251 | return 1; | |
252 | ||
253 | /* | |
254 | * mark entry before potentially trimming io_u | |
255 | */ | |
413dd459 | 256 | if (!td->read_iolog && td_random(td) && !td->norandommap) |
9bf2061e | 257 | mark_random_map(td, io_u); |
bca4ed4d JA |
258 | |
259 | /* | |
260 | * If using a write iolog, store this entry. | |
261 | */ | |
262 | if (td->write_iolog_file) | |
263 | write_iolog_put(td, io_u); | |
264 | ||
bca4ed4d | 265 | return 0; |
10ba535a JA |
266 | } |
267 | ||
71619dc2 JA |
268 | static void io_u_mark_depth(struct thread_data *td) |
269 | { | |
270 | int index = 0; | |
271 | ||
272 | switch (td->cur_depth) { | |
273 | default: | |
274 | index++; | |
275 | case 32 ... 63: | |
276 | index++; | |
277 | case 16 ... 31: | |
278 | index++; | |
279 | case 8 ... 15: | |
280 | index++; | |
281 | case 4 ... 7: | |
282 | index++; | |
283 | case 2 ... 3: | |
284 | index++; | |
285 | case 1: | |
286 | break; | |
287 | } | |
288 | ||
289 | td->io_u_map[index]++; | |
290 | td->total_io_u++; | |
291 | } | |
292 | ||
ec118304 JA |
293 | static void io_u_mark_latency(struct thread_data *td, unsigned long msec) |
294 | { | |
295 | int index = 0; | |
296 | ||
297 | switch (msec) { | |
298 | default: | |
299 | index++; | |
8abdce66 | 300 | case 1000 ... 1999: |
ec118304 | 301 | index++; |
8abdce66 | 302 | case 750 ... 999: |
ec118304 | 303 | index++; |
8abdce66 | 304 | case 500 ... 749: |
ec118304 | 305 | index++; |
8abdce66 | 306 | case 250 ... 499: |
ec118304 | 307 | index++; |
8abdce66 | 308 | case 100 ... 249: |
ec118304 | 309 | index++; |
8abdce66 | 310 | case 50 ... 99: |
ec118304 | 311 | index++; |
8abdce66 | 312 | case 20 ... 49: |
ec118304 | 313 | index++; |
8abdce66 | 314 | case 10 ... 19: |
ec118304 | 315 | index++; |
8abdce66 | 316 | case 4 ... 9: |
ec118304 JA |
317 | index++; |
318 | case 2 ... 3: | |
319 | index++; | |
320 | case 0 ... 1: | |
321 | break; | |
322 | } | |
323 | ||
324 | td->io_u_lat[index]++; | |
325 | } | |
326 | ||
0aabe160 JA |
327 | /* |
328 | * Get next file to service by choosing one at random | |
329 | */ | |
330 | static struct fio_file *get_next_file_rand(struct thread_data *td) | |
331 | { | |
332 | long r = os_random_long(&td->next_file_state); | |
333 | unsigned int fileno; | |
334 | struct fio_file *f; | |
335 | ||
336 | do { | |
337 | fileno = (unsigned int) ((double) (td->nr_files - 1) * r / (RAND_MAX + 1.0)); | |
338 | f = &td->files[fileno]; | |
339 | if (f->fd != -1) | |
340 | return f; | |
341 | } while (1); | |
342 | } | |
343 | ||
344 | /* | |
345 | * Get next file to service by doing round robin between all available ones | |
346 | */ | |
347 | static struct fio_file *get_next_file_rr(struct thread_data *td) | |
3d7c391d JA |
348 | { |
349 | unsigned int old_next_file = td->next_file; | |
350 | struct fio_file *f; | |
351 | ||
352 | do { | |
353 | f = &td->files[td->next_file]; | |
354 | ||
355 | td->next_file++; | |
356 | if (td->next_file >= td->nr_files) | |
357 | td->next_file = 0; | |
358 | ||
359 | if (f->fd != -1) | |
360 | break; | |
361 | ||
362 | f = NULL; | |
363 | } while (td->next_file != old_next_file); | |
364 | ||
365 | return f; | |
366 | } | |
367 | ||
bdb4e2e9 JA |
368 | static struct fio_file *get_next_file(struct thread_data *td) |
369 | { | |
370 | if (!td->nr_open_files) | |
371 | return NULL; | |
372 | ||
373 | if (td->file_service_type == FIO_FSERVICE_RR) | |
374 | return get_next_file_rr(td); | |
375 | else | |
376 | return get_next_file_rand(td); | |
377 | } | |
378 | ||
10ba535a JA |
379 | struct io_u *__get_io_u(struct thread_data *td) |
380 | { | |
381 | struct io_u *io_u = NULL; | |
382 | ||
755200a3 JA |
383 | if (!list_empty(&td->io_u_requeues)) |
384 | io_u = list_entry(td->io_u_requeues.next, struct io_u, list); | |
385 | else if (!queue_full(td)) { | |
10ba535a JA |
386 | io_u = list_entry(td->io_u_freelist.next, struct io_u, list); |
387 | ||
6040dabc | 388 | io_u->buflen = 0; |
10ba535a | 389 | io_u->resid = 0; |
755200a3 | 390 | io_u->file = NULL; |
d7762cf8 | 391 | io_u->end_io = NULL; |
755200a3 JA |
392 | } |
393 | ||
394 | if (io_u) { | |
0c6e7517 JA |
395 | assert(io_u->flags & IO_U_F_FREE); |
396 | io_u->flags &= ~IO_U_F_FREE; | |
397 | ||
755200a3 | 398 | io_u->error = 0; |
10ba535a JA |
399 | list_del(&io_u->list); |
400 | list_add(&io_u->list, &td->io_u_busylist); | |
401 | td->cur_depth++; | |
71619dc2 | 402 | io_u_mark_depth(td); |
10ba535a JA |
403 | } |
404 | ||
405 | return io_u; | |
406 | } | |
407 | ||
408 | /* | |
409 | * Return an io_u to be processed. Gets a buflen and offset, sets direction, | |
410 | * etc. The returned io_u is fully ready to be prepped and submitted. | |
411 | */ | |
3d7c391d | 412 | struct io_u *get_io_u(struct thread_data *td) |
10ba535a | 413 | { |
3d7c391d | 414 | struct fio_file *f; |
10ba535a JA |
415 | struct io_u *io_u; |
416 | ||
417 | io_u = __get_io_u(td); | |
418 | if (!io_u) | |
419 | return NULL; | |
420 | ||
755200a3 JA |
421 | /* |
422 | * from a requeue, io_u already setup | |
423 | */ | |
424 | if (io_u->file) | |
77f392bf | 425 | goto out; |
755200a3 | 426 | |
bdb4e2e9 JA |
427 | do { |
428 | f = get_next_file(td); | |
429 | if (!f) { | |
430 | put_io_u(td, io_u); | |
431 | return NULL; | |
432 | } | |
3d7c391d | 433 | |
bdb4e2e9 | 434 | io_u->file = f; |
3d7c391d | 435 | |
bdb4e2e9 JA |
436 | if (!fill_io_u(td, io_u)) |
437 | break; | |
10ba535a | 438 | |
bdb4e2e9 JA |
439 | /* |
440 | * No more to do for this file, close it | |
441 | */ | |
442 | io_u->file = NULL; | |
443 | close_file(td, f); | |
444 | } while (1); | |
10ba535a | 445 | |
9bf2061e JA |
446 | if (td->zone_bytes >= td->zone_size) { |
447 | td->zone_bytes = 0; | |
448 | f->last_pos += td->zone_skip; | |
449 | } | |
450 | ||
ee88470c | 451 | if (io_u->buflen + io_u->offset > f->real_file_size) { |
10ba535a JA |
452 | if (td->io_ops->flags & FIO_RAWIO) { |
453 | put_io_u(td, io_u); | |
454 | return NULL; | |
455 | } | |
456 | ||
ee88470c | 457 | io_u->buflen = f->real_file_size - io_u->offset; |
10ba535a JA |
458 | } |
459 | ||
87dc1ab1 JA |
460 | if (io_u->ddir != DDIR_SYNC) { |
461 | if (!io_u->buflen) { | |
462 | put_io_u(td, io_u); | |
463 | return NULL; | |
464 | } | |
10ba535a | 465 | |
36167d82 | 466 | f->last_pos = io_u->offset + io_u->buflen; |
10ba535a | 467 | |
87dc1ab1 JA |
468 | if (td->verify != VERIFY_NONE) |
469 | populate_verify_io_u(td, io_u); | |
470 | } | |
10ba535a | 471 | |
165faf16 JA |
472 | /* |
473 | * Set io data pointers. | |
474 | */ | |
77f392bf | 475 | out: |
cec6b55d JA |
476 | io_u->xfer_buf = io_u->buf; |
477 | io_u->xfer_buflen = io_u->buflen; | |
165faf16 | 478 | |
36167d82 JA |
479 | if (td_io_prep(td, io_u)) { |
480 | put_io_u(td, io_u); | |
481 | return NULL; | |
482 | } | |
483 | ||
02bcaa8c | 484 | fio_gettime(&io_u->start_time, NULL); |
10ba535a JA |
485 | return io_u; |
486 | } | |
487 | ||
97601024 JA |
488 | static void io_completed(struct thread_data *td, struct io_u *io_u, |
489 | struct io_completion_data *icd) | |
10ba535a | 490 | { |
10ba535a JA |
491 | unsigned long msec; |
492 | ||
0c6e7517 JA |
493 | assert(io_u->flags & IO_U_F_FLIGHT); |
494 | io_u->flags &= ~IO_U_F_FLIGHT; | |
495 | ||
87dc1ab1 JA |
496 | if (io_u->ddir == DDIR_SYNC) { |
497 | td->last_was_sync = 1; | |
498 | return; | |
499 | } | |
500 | ||
501 | td->last_was_sync = 0; | |
502 | ||
10ba535a JA |
503 | if (!io_u->error) { |
504 | unsigned int bytes = io_u->buflen - io_u->resid; | |
1e97cce9 | 505 | const enum fio_ddir idx = io_u->ddir; |
3af6ef39 | 506 | int ret; |
10ba535a JA |
507 | |
508 | td->io_blocks[idx]++; | |
509 | td->io_bytes[idx] += bytes; | |
510 | td->zone_bytes += bytes; | |
511 | td->this_io_bytes[idx] += bytes; | |
512 | ||
02bcaa8c JA |
513 | io_u->file->last_completed_pos = io_u->offset + io_u->buflen; |
514 | ||
515 | msec = mtime_since(&io_u->issue_time, &icd->time); | |
10ba535a JA |
516 | |
517 | add_clat_sample(td, idx, msec); | |
02bcaa8c | 518 | add_bw_sample(td, idx, &icd->time); |
ec118304 | 519 | io_u_mark_latency(td, msec); |
10ba535a JA |
520 | |
521 | if ((td_rw(td) || td_write(td)) && idx == DDIR_WRITE) | |
522 | log_io_piece(td, io_u); | |
523 | ||
524 | icd->bytes_done[idx] += bytes; | |
3af6ef39 | 525 | |
d7762cf8 JA |
526 | if (io_u->end_io) { |
527 | ret = io_u->end_io(io_u); | |
3af6ef39 JA |
528 | if (ret && !icd->error) |
529 | icd->error = ret; | |
530 | } | |
10ba535a JA |
531 | } else |
532 | icd->error = io_u->error; | |
533 | } | |
534 | ||
d7762cf8 | 535 | static void init_icd(struct io_completion_data *icd, int nr) |
10ba535a | 536 | { |
02bcaa8c JA |
537 | fio_gettime(&icd->time, NULL); |
538 | ||
3af6ef39 JA |
539 | icd->nr = nr; |
540 | ||
10ba535a JA |
541 | icd->error = 0; |
542 | icd->bytes_done[0] = icd->bytes_done[1] = 0; | |
36167d82 JA |
543 | } |
544 | ||
97601024 JA |
545 | static void ios_completed(struct thread_data *td, |
546 | struct io_completion_data *icd) | |
36167d82 JA |
547 | { |
548 | struct io_u *io_u; | |
549 | int i; | |
550 | ||
10ba535a JA |
551 | for (i = 0; i < icd->nr; i++) { |
552 | io_u = td->io_ops->event(td, i); | |
553 | ||
554 | io_completed(td, io_u, icd); | |
555 | put_io_u(td, io_u); | |
556 | } | |
557 | } | |
97601024 | 558 | |
e7e6cfb4 JA |
559 | /* |
560 | * Complete a single io_u for the sync engines. | |
561 | */ | |
d7762cf8 | 562 | long io_u_sync_complete(struct thread_data *td, struct io_u *io_u) |
97601024 JA |
563 | { |
564 | struct io_completion_data icd; | |
565 | ||
d7762cf8 | 566 | init_icd(&icd, 1); |
97601024 JA |
567 | io_completed(td, io_u, &icd); |
568 | put_io_u(td, io_u); | |
569 | ||
570 | if (!icd.error) | |
571 | return icd.bytes_done[0] + icd.bytes_done[1]; | |
572 | ||
97601024 JA |
573 | return -1; |
574 | } | |
575 | ||
e7e6cfb4 JA |
576 | /* |
577 | * Called to complete min_events number of io for the async engines. | |
578 | */ | |
d7762cf8 | 579 | long io_u_queued_complete(struct thread_data *td, int min_events) |
97601024 | 580 | { |
97601024 | 581 | struct io_completion_data icd; |
00de55ef | 582 | struct timespec *tvp = NULL; |
97601024 JA |
583 | int ret; |
584 | ||
face81b2 | 585 | if (!min_events) { |
00de55ef JA |
586 | struct timespec ts = { .tv_sec = 0, .tv_nsec = 0, }; |
587 | ||
588 | tvp = &ts; | |
755200a3 | 589 | } |
97601024 | 590 | |
00de55ef | 591 | ret = td_io_getevents(td, min_events, td->cur_depth, tvp); |
97601024 | 592 | if (ret < 0) { |
e1161c32 | 593 | td_verror(td, -ret, "td_io_getevents"); |
97601024 JA |
594 | return ret; |
595 | } else if (!ret) | |
596 | return ret; | |
597 | ||
d7762cf8 | 598 | init_icd(&icd, ret); |
97601024 JA |
599 | ios_completed(td, &icd); |
600 | if (!icd.error) | |
601 | return icd.bytes_done[0] + icd.bytes_done[1]; | |
602 | ||
97601024 JA |
603 | return -1; |
604 | } | |
7e77dd02 JA |
605 | |
606 | /* | |
607 | * Call when io_u is really queued, to update the submission latency. | |
608 | */ | |
609 | void io_u_queued(struct thread_data *td, struct io_u *io_u) | |
610 | { | |
611 | unsigned long slat_time; | |
612 | ||
613 | slat_time = mtime_since(&io_u->start_time, &io_u->issue_time); | |
614 | add_slat_sample(td, io_u->ddir, slat_time); | |
615 | } | |
433afcb4 | 616 | |
55bc9728 | 617 | #ifdef FIO_USE_TIMEOUT |
433afcb4 JA |
618 | void io_u_set_timeout(struct thread_data *td) |
619 | { | |
620 | assert(td->cur_depth); | |
621 | ||
622 | td->timer.it_interval.tv_sec = 0; | |
623 | td->timer.it_interval.tv_usec = 0; | |
624 | td->timer.it_value.tv_sec = IO_U_TIMEOUT + IO_U_TIMEOUT_INC; | |
625 | td->timer.it_value.tv_usec = 0; | |
626 | setitimer(ITIMER_REAL, &td->timer, NULL); | |
627 | fio_gettime(&td->timeout_end, NULL); | |
628 | } | |
5945b9b4 JA |
629 | |
630 | static void io_u_dump(struct io_u *io_u) | |
631 | { | |
632 | unsigned long t_start = mtime_since_now(&io_u->start_time); | |
633 | unsigned long t_issue = mtime_since_now(&io_u->issue_time); | |
634 | ||
635 | log_err("io_u=%p, t_start=%lu, t_issue=%lu\n", io_u, t_start, t_issue); | |
636 | log_err(" buf=%p/%p, len=%lu/%lu, offset=%llu\n", io_u->buf, io_u->xfer_buf, io_u->buflen, io_u->xfer_buflen, io_u->offset); | |
637 | log_err(" ddir=%d, fname=%s\n", io_u->ddir, io_u->file->file_name); | |
638 | } | |
55bc9728 JA |
639 | #else |
640 | void io_u_set_timeout(struct thread_data fio_unused *td) | |
641 | { | |
642 | } | |
643 | #endif | |
433afcb4 | 644 | |
55bc9728 | 645 | #ifdef FIO_USE_TIMEOUT |
433afcb4 JA |
646 | static void io_u_timeout_handler(int fio_unused sig) |
647 | { | |
648 | struct thread_data *td, *__td; | |
649 | pid_t pid = getpid(); | |
5945b9b4 JA |
650 | struct list_head *entry; |
651 | struct io_u *io_u; | |
433afcb4 JA |
652 | int i; |
653 | ||
654 | log_err("fio: io_u timeout\n"); | |
655 | ||
656 | /* | |
657 | * TLS would be nice... | |
658 | */ | |
659 | td = NULL; | |
660 | for_each_td(__td, i) { | |
661 | if (__td->pid == pid) { | |
662 | td = __td; | |
663 | break; | |
664 | } | |
665 | } | |
666 | ||
667 | if (!td) { | |
668 | log_err("fio: io_u timeout, can't find job\n"); | |
669 | exit(1); | |
670 | } | |
671 | ||
672 | if (!td->cur_depth) { | |
673 | log_err("fio: timeout without pending work?\n"); | |
674 | return; | |
675 | } | |
676 | ||
677 | log_err("fio: io_u timeout: job=%s, pid=%d\n", td->name, td->pid); | |
5945b9b4 JA |
678 | |
679 | list_for_each(entry, &td->io_u_busylist) { | |
680 | io_u = list_entry(entry, struct io_u, list); | |
681 | ||
682 | io_u_dump(io_u); | |
683 | } | |
684 | ||
685 | td_verror(td, ETIMEDOUT, "io_u timeout"); | |
433afcb4 JA |
686 | exit(1); |
687 | } | |
55bc9728 | 688 | #endif |
433afcb4 JA |
689 | |
690 | void io_u_init_timeout(void) | |
691 | { | |
55bc9728 | 692 | #ifdef FIO_USE_TIMEOUT |
433afcb4 | 693 | signal(SIGALRM, io_u_timeout_handler); |
55bc9728 | 694 | #endif |
433afcb4 | 695 | } |