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[PATCH cpu io threads need not have lots of stuff setup
[fio.git] / init.c
CommitLineData
906c8d75 1/*
cb2c86fd 2 * This file contains job initialization and setup functions.
906c8d75 3 */
ebac4655
JA		 4#include <stdio.h>
5#include <stdlib.h>
6#include <unistd.h>
7#include <fcntl.h>
8#include <ctype.h>
9#include <string.h>
10#include <errno.h>
11#include <sys/ipc.h>
12#include <sys/shm.h>
13#include <sys/types.h>
14#include <sys/stat.h>
15
16#include "fio.h"
cb2c86fd 17#include "parse.h"
ebac4655 18
906c8d75
JA		 19/*
20 * The default options
21 */
20dc95c4
JA		 22#define DEF_BS (4096)
23#define DEF_TIMEOUT (0)
24#define DEF_RATE_CYCLE (1000)
25#define DEF_ODIRECT (1)
26#define DEF_IO_ENGINE (FIO_SYNCIO)
ebac4655 27#define DEF_IO_ENGINE_NAME "sync"
20dc95c4
JA		 28#define DEF_SEQUENTIAL (1)
29#define DEF_RAND_REPEAT (1)
30#define DEF_OVERWRITE (1)
20dc95c4
JA		 31#define DEF_INVALIDATE (1)
32#define DEF_SYNCIO (0)
33#define DEF_RANDSEED (0xb1899bedUL)
34#define DEF_BWAVGTIME (500)
35#define DEF_CREATE_SER (1)
ebac4655 36#define DEF_CREATE_FSYNC (1)
20dc95c4
JA		 37#define DEF_LOOPS (1)
38#define DEF_VERIFY (0)
39#define DEF_STONEWALL (0)
40#define DEF_NUMJOBS (1)
41#define DEF_USE_THREAD (0)
42#define DEF_FILE_SIZE (1024 * 1024 * 1024UL)
43#define DEF_ZONE_SIZE (0)
44#define DEF_ZONE_SKIP (0)
a6ccc7be
JA		 45#define DEF_RWMIX_CYCLE (500)
46#define DEF_RWMIX_READ (50)
b6f4d880 47#define DEF_NICE (0)
53cdc686 48#define DEF_NR_FILES (1)
f6cbb269 49#define DEF_UNLINK (0)
ec94ec56
JA		 50#define DEF_WRITE_BW_LOG (0)
51#define DEF_WRITE_LAT_LOG (0)
ebac4655 52
e1f36503
JA		 53#define td_var_offset(var) ((size_t) &((struct thread_data *)0)->var)
54
55static int str_rw_cb(void *, char *);
56static int str_ioengine_cb(void *, char *);
57static int str_mem_cb(void *, char *);
58static int str_verify_cb(void *, char *);
59static int str_lockmem_cb(void *, unsigned long *);
60static int str_prio_cb(void *, unsigned int *);
61static int str_prioclass_cb(void *, unsigned int *);
62static int str_exitall_cb(void);
63static int str_cpumask_cb(void *, unsigned int *);
64
65/*
66 * Map of job/command line options
67 */
68static struct fio_option options[] = {
69 {
70 .name = "name",
71 .type = FIO_OPT_STR_STORE,
72 .off1 = td_var_offset(name),
73 },
74 {
75 .name = "directory",
76 .type = FIO_OPT_STR_STORE,
77 .off1 = td_var_offset(directory),
78 },
79 {
80 .name = "filename",
81 .type = FIO_OPT_STR_STORE,
82 .off1 = td_var_offset(filename),
83 },
84 {
85 .name = "rw",
86 .type = FIO_OPT_STR,
87 .cb = str_rw_cb,
88 },
89 {
90 .name = "ioengine",
91 .type = FIO_OPT_STR,
92 .cb = str_ioengine_cb,
93 },
94 {
95 .name = "mem",
96 .type = FIO_OPT_STR,
97 .cb = str_mem_cb,
98 },
99 {
100 .name = "verify",
101 .type = FIO_OPT_STR,
102 .cb = str_verify_cb,
103 },
104 {
105 .name = "write_iolog",
076efc7c
JA		 106 .type = FIO_OPT_STR_STORE,
107 .off1 = td_var_offset(write_iolog_file),
e1f36503
JA		 108 },
109 {
076efc7c 110 .name = "read_iolog",
e1f36503 111 .type = FIO_OPT_STR_STORE,
076efc7c 112 .off1 = td_var_offset(read_iolog_file),
e1f36503
JA		 113 },
114 {
115 .name = "exec_prerun",
116 .type = FIO_OPT_STR_STORE,
117 .off1 = td_var_offset(exec_prerun),
118 },
119 {
120 .name = "exec_postrun",
121 .type = FIO_OPT_STR_STORE,
122 .off1 = td_var_offset(exec_postrun),
123 },
124#ifdef FIO_HAVE_IOSCHED_SWITCH
125 {
126 .name = "ioscheduler",
127 .type = FIO_OPT_STR_STORE,
128 .off1 = td_var_offset(ioscheduler),
129 },
130#endif
131 {
132 .name = "size",
133 .type = FIO_OPT_STR_VAL,
134 .off1 = td_var_offset(total_file_size),
135 },
136 {
137 .name = "bs",
138 .type = FIO_OPT_STR_VAL,
139 .off1 = td_var_offset(bs),
140 },
141 {
142 .name = "offset",
143 .type = FIO_OPT_STR_VAL,
144 .off1 = td_var_offset(start_offset),
145 },
146 {
147 .name = "zonesize",
148 .type = FIO_OPT_STR_VAL,
149 .off1 = td_var_offset(zone_size),
150 },
151 {
152 .name = "zoneskip",
153 .type = FIO_OPT_STR_VAL,
154 .off1 = td_var_offset(zone_skip),
155 },
156 {
157 .name = "lockmem",
158 .type = FIO_OPT_STR_VAL,
159 .cb = str_lockmem_cb,
160 },
161 {
162 .name = "bsrange",
163 .type = FIO_OPT_RANGE,
164 .off1 = td_var_offset(min_bs),
165 .off2 = td_var_offset(max_bs),
166 },
167 {
168 .name = "nrfiles",
169 .type = FIO_OPT_INT,
170 .off1 = td_var_offset(nr_files),
171 },
172 {
173 .name = "iodepth",
174 .type = FIO_OPT_INT,
175 .off1 = td_var_offset(iodepth),
176 },
177 {
178 .name = "fsync",
179 .type = FIO_OPT_INT,
180 .off1 = td_var_offset(fsync_blocks),
181 },
182 {
183 .name = "rwmixcycle",
184 .type = FIO_OPT_INT,
185 .off1 = td_var_offset(rwmixcycle),
186 },
187 {
188 .name = "rwmixread",
189 .type = FIO_OPT_INT,
190 .off1 = td_var_offset(rwmixread),
191 .max_val= 100,
192 },
193 {
194 .name = "rwmixwrite",
195 .type = FIO_OPT_INT,
196 .off1 = td_var_offset(rwmixwrite),
197 .max_val= 100,
198 },
199 {
200 .name = "nice",
201 .type = FIO_OPT_INT,
202 .off1 = td_var_offset(nice),
203 },
204#ifdef FIO_HAVE_IOPRIO
205 {
206 .name = "prio",
207 .type = FIO_OPT_INT,
208 .cb = str_prio_cb,
209 },
210 {
211 .name = "prioclass",
212 .type = FIO_OPT_INT,
213 .cb = str_prioclass_cb,
214 },
215#endif
216 {
217 .name = "thinktime",
218 .type = FIO_OPT_INT,
219 .off1 = td_var_offset(thinktime)
220 },
221 {
222 .name = "rate",
223 .type = FIO_OPT_INT,
224 .off1 = td_var_offset(rate)
225 },
226 {
227 .name = "ratemin",
228 .type = FIO_OPT_INT,
229 .off1 = td_var_offset(ratemin)
230 },
231 {
232 .name = "ratecycle",
233 .type = FIO_OPT_INT,
234 .off1 = td_var_offset(ratecycle)
235 },
236 {
237 .name = "startdelay",
238 .type = FIO_OPT_INT,
239 .off1 = td_var_offset(start_delay)
240 },
241 {
242 .name = "timeout",
243 .type = FIO_OPT_STR_VAL_TIME,
244 .off1 = td_var_offset(timeout)
245 },
246 {
247 .name = "invalidate",
248 .type = FIO_OPT_INT,
249 .off1 = td_var_offset(invalidate_cache)
250 },
251 {
252 .name = "sync",
253 .type = FIO_OPT_INT,
254 .off1 = td_var_offset(sync_io)
255 },
256 {
257 .name = "bwavgtime",
258 .type = FIO_OPT_INT,
259 .off1 = td_var_offset(bw_avg_time)
260 },
261 {
262 .name = "create_serialize",
263 .type = FIO_OPT_INT,
264 .off1 = td_var_offset(create_serialize)
265 },
266 {
267 .name = "create_fsync",
268 .type = FIO_OPT_INT,
269 .off1 = td_var_offset(create_fsync)
270 },
271 {
272 .name = "loops",
273 .type = FIO_OPT_INT,
274 .off1 = td_var_offset(loops)
275 },
276 {
277 .name = "numjobs",
278 .type = FIO_OPT_INT,
279 .off1 = td_var_offset(numjobs)
280 },
281 {
282 .name = "cpuload",
283 .type = FIO_OPT_INT,
284 .off1 = td_var_offset(cpuload)
285 },
286 {
287 .name = "cpuchunks",
288 .type = FIO_OPT_INT,
289 .off1 = td_var_offset(cpucycle)
290 },
291 {
292 .name = "direct",
293 .type = FIO_OPT_INT,
294 .off1 = td_var_offset(odirect)
295 },
296 {
297 .name = "overwrite",
298 .type = FIO_OPT_INT,
299 .off1 = td_var_offset(overwrite)
300 },
301#ifdef FIO_HAVE_CPU_AFFINITY
302 {
303 .name = "cpumask",
304 .type = FIO_OPT_INT,
305 .cb = str_cpumask_cb,
306 },
307#endif
308 {
309 .name = "end_fsync",
310 .type = FIO_OPT_INT,
311 .off1 = td_var_offset(end_fsync)
312 },
313 {
314 .name = "unlink",
315 .type = FIO_OPT_STR_SET,
316 .off1 = td_var_offset(unlink),
317 },
318 {
319 .name = "exitall",
320 .type = FIO_OPT_STR_SET,
321 .cb = str_exitall_cb,
322 },
323 {
324 .name = "stonewall",
325 .type = FIO_OPT_STR_SET,
326 .off1 = td_var_offset(stonewall),
327 },
328 {
329 .name = "thread",
330 .type = FIO_OPT_STR_SET,
331 .off1 = td_var_offset(thread),
332 },
333 {
334 .name = "write_bw_log",
335 .type = FIO_OPT_STR_SET,
336 .off1 = td_var_offset(write_bw_log),
337 },
338 {
339 .name = "write_lat_log",
340 .type = FIO_OPT_STR_SET,
341 .off1 = td_var_offset(write_lat_log),
342 },
343 {
344 .name = NULL,
345 },
346};
347
972cfd25 348static int def_timeout = DEF_TIMEOUT;
972cfd25 349
f4866ec5 350static char fio_version_string[] = "fio 1.5";
ebac4655 351
972cfd25 352static char **ini_file;
ebac4655
JA		 353static int max_jobs = MAX_JOBS;
354
355struct thread_data def_thread;
356struct thread_data *threads = NULL;
357
358int rate_quit = 0;
ebac4655 359int exitall_on_terminate = 0;
c6ae0a5b 360int terse_output = 0;
c04f7ec3 361unsigned long long mlock_size = 0;
eb8bbf48
JA		 362FILE *f_out = NULL;
363FILE *f_err = NULL;
ebac4655 364
ec94ec56
JA		 365static int write_lat_log = DEF_WRITE_LAT_LOG;
366static int write_bw_log = DEF_WRITE_BW_LOG;
367
906c8d75
JA		 368/*
369 * Return a free job structure.
370 */
ebac4655
JA		 371static struct thread_data *get_new_job(int global, struct thread_data *parent)
372{
373 struct thread_data *td;
374
375 if (global)
376 return &def_thread;
377 if (thread_number >= max_jobs)
378 return NULL;
379
380 td = &threads[thread_number++];
ddaeaa5a
JA		 381 *td = *parent;
382 td->name[0] = '\0';
ebac4655 383
ebac4655 384 td->thread_number = thread_number;
ebac4655
JA		 385 return td;
386}
387
388static void put_job(struct thread_data *td)
389{
390 memset(&threads[td->thread_number - 1], 0, sizeof(*td));
391 thread_number--;
392}
393
dad915e3
JA		 394/*
395 * Lazy way of fixing up options that depend on each other. We could also
396 * define option callback handlers, but this is easier.
397 */
e1f36503
JA		 398static void fixup_options(struct thread_data *td)
399{
400 if (!td->min_bs)
401 td->min_bs = td->bs;
402 if (!td->max_bs)
403 td->max_bs = td->bs;
404
405 if (!td->rwmixread && td->rwmixwrite)
406 td->rwmixread = 100 - td->rwmixwrite;
dad915e3 407
076efc7c
JA		 408 if (td->write_iolog_file && td->read_iolog_file) {
409 log_err("fio: read iolog overrides write_iolog\n");
410 free(td->write_iolog_file);
411 td->write_iolog_file = NULL;
412 }
e1f36503
JA		 413}
414
906c8d75
JA		 415/*
416 * Adds a job to the list of things todo. Sanitizes the various options
417 * to make sure we don't have conflicts, and initializes various
418 * members of td.
419 */
75154845 420static int add_job(struct thread_data *td, const char *jobname, int job_add_num)
ebac4655 421{
3d60d1ed
JA		 422 char *ddir_str[] = { "read", "write", "randread", "randwrite",
423 "rw", NULL, "randrw" };
ebac4655 424 struct stat sb;
53cdc686
JA		 425 int numjobs, ddir, i;
426 struct fio_file *f;
ebac4655
JA		 427
428#ifndef FIO_HAVE_LIBAIO
429 if (td->io_engine == FIO_LIBAIO) {
3b70d7e5 430 log_err("Linux libaio not available\n");
ebac4655
JA		 431 return 1;
432 }
433#endif
434#ifndef FIO_HAVE_POSIXAIO
435 if (td->io_engine == FIO_POSIXAIO) {
3b70d7e5 436 log_err("posix aio not available\n");
ebac4655
JA		 437 return 1;
438 }
439#endif
ebac4655 440
e1f36503
JA		 441 fixup_options(td);
442
ebac4655
JA		 443 /*
444 * the def_thread is just for options, it's not a real job
445 */
446 if (td == &def_thread)
447 return 0;
448
df64119d
JA		 449 /*
450 * Set default io engine, if none set
451 */
452 if (!td->io_ops) {
453 td->io_ops = load_ioengine(td, DEF_IO_ENGINE_NAME);
454 if (!td->io_ops) {
455 log_err("default engine %s not there?\n", DEF_IO_ENGINE_NAME);
456 return 1;
457 }
458 }
459
2866c82d 460 if (td->io_ops->flags & FIO_SYNCIO)
ebac4655
JA		 461 td->iodepth = 1;
462 else {
463 if (!td->iodepth)
841ddd13 464 td->iodepth = td->nr_files;
ebac4655
JA		 465 }
466
20dc95c4 467 /*
53cdc686 468 * only really works for sequential io for now, and with 1 file
20dc95c4 469 */
53cdc686 470 if (td->zone_size && !td->sequential && td->nr_files == 1)
20dc95c4
JA		 471 td->zone_size = 0;
472
9cc935a1
JA		 473 /*
474 * Reads can do overwrites, we always need to pre-create the file
475 */
476 if (td_read(td) || td_rw(td))
477 td->overwrite = 1;
478
ebac4655 479 td->filetype = FIO_TYPE_FILE;
0af7b542
JA		 480 if (!stat(jobname, &sb)) {
481 if (S_ISBLK(sb.st_mode))
482 td->filetype = FIO_TYPE_BD;
483 else if (S_ISCHR(sb.st_mode))
484 td->filetype = FIO_TYPE_CHAR;
485 }
ebac4655 486
b2a15192
JA		 487 if (td->odirect)
488 td->io_ops->flags |= FIO_RAWIO;
489
13f8e2d2
JA		 490 if (td->filename)
491 td->nr_uniq_files = 1;
492 else
493 td->nr_uniq_files = td->nr_files;
494
495 if (td->filetype == FIO_TYPE_FILE || td->filename) {
e9c047a0 496 char tmp[PATH_MAX];
53cdc686
JA		 497 int len = 0;
498 int i;
e9c047a0 499
ef899b63 500 if (td->directory && td->directory[0] != '\0')
53cdc686 501 sprintf(tmp, "%s/", td->directory);
ebac4655 502
53cdc686
JA		 503 td->files = malloc(sizeof(struct fio_file) * td->nr_files);
504
505 for_each_file(td, f, i) {
506 memset(f, 0, sizeof(*f));
507 f->fd = -1;
508
13f8e2d2
JA		 509 if (td->filename)
510 sprintf(tmp + len, "%s", td->filename);
511 else
512 sprintf(tmp + len, "%s.%d.%d", jobname, td->thread_number, i);
53cdc686
JA		 513 f->file_name = strdup(tmp);
514 }
515 } else {
516 td->nr_files = 1;
517 td->files = malloc(sizeof(struct fio_file));
518 f = &td->files[0];
519
520 memset(f, 0, sizeof(*f));
521 f->fd = -1;
522 f->file_name = strdup(jobname);
523 }
524
525 for_each_file(td, f, i) {
526 f->file_size = td->total_file_size / td->nr_files;
527 f->file_offset = td->start_offset;
528 }
529
bbfd6b00 530 fio_sem_init(&td->mutex, 0);
ebac4655
JA		 531
532 td->clat_stat[0].min_val = td->clat_stat[1].min_val = ULONG_MAX;
533 td->slat_stat[0].min_val = td->slat_stat[1].min_val = ULONG_MAX;
534 td->bw_stat[0].min_val = td->bw_stat[1].min_val = ULONG_MAX;
535
536 if (td->min_bs == -1U)
537 td->min_bs = td->bs;
538 if (td->max_bs == -1U)
539 td->max_bs = td->bs;
3d60d1ed 540 if (td_read(td) && !td_rw(td))
ebac4655
JA		 541 td->verify = 0;
542
543 if (td->stonewall && td->thread_number > 1)
544 groupid++;
545
546 td->groupid = groupid;
547
548 if (setup_rate(td))
549 goto err;
550
ec94ec56 551 if (td->write_lat_log) {
ebac4655
JA		 552 setup_log(&td->slat_log);
553 setup_log(&td->clat_log);
554 }
ec94ec56 555 if (td->write_bw_log)
ebac4655
JA		 556 setup_log(&td->bw_log);
557
01452055
JA		 558 if (td->name[0] == '\0')
559 snprintf(td->name, sizeof(td->name)-1, "client%d", td->thread_number);
560
3d60d1ed 561 ddir = td->ddir + (!td->sequential << 1) + (td->iomix << 2);
75154845 562
c6ae0a5b 563 if (!terse_output) {
b990b5c0 564 if (!job_add_num) {
2866c82d 565 if (td->io_ops->flags & FIO_CPUIO)
b990b5c0
JA		 566 fprintf(f_out, "%s: ioengine=cpu, cpuload=%u, cpucycle=%u\n", td->name, td->cpuload, td->cpucycle);
567 else
2866c82d 568 fprintf(f_out, "%s: (g=%d): rw=%s, odir=%d, bs=%d-%d, rate=%d, ioengine=%s, iodepth=%d\n", td->name, td->groupid, ddir_str[ddir], td->odirect, td->min_bs, td->max_bs, td->rate, td->io_ops->name, td->iodepth);
b990b5c0 569 } else if (job_add_num == 1)
c6ae0a5b
JA		 570 fprintf(f_out, "...\n");
571 }
ebac4655
JA		 572
573 /*
574 * recurse add identical jobs, clear numjobs and stonewall options
575 * as they don't apply to sub-jobs
576 */
577 numjobs = td->numjobs;
578 while (--numjobs) {
579 struct thread_data *td_new = get_new_job(0, td);
580
581 if (!td_new)
582 goto err;
583
584 td_new->numjobs = 1;
585 td_new->stonewall = 0;
75154845 586 job_add_num = numjobs - 1;
ebac4655 587
75154845 588 if (add_job(td_new, jobname, job_add_num))
ebac4655
JA		 589 goto err;
590 }
591 return 0;
592err:
593 put_job(td);
594 return -1;
595}
596
906c8d75
JA		 597/*
598 * Initialize the various random states we need (random io, block size ranges,
599 * read/write mix, etc).
600 */
ebac4655
JA		 601int init_random_state(struct thread_data *td)
602{
a6ccc7be 603 unsigned long seeds[4];
53cdc686 604 int fd, num_maps, blocks, i;
0ab8db89 605 struct fio_file *f;
ebac4655 606
f48b467c
JA		 607 if (td->io_ops->flags & FIO_CPUIO)
608 return 0;
609
1ac267bb 610 fd = open("/dev/urandom", O_RDONLY);
ebac4655
JA		 611 if (fd == -1) {
612 td_verror(td, errno);
613 return 1;
614 }
615
a6ccc7be 616 if (read(fd, seeds, sizeof(seeds)) < (int) sizeof(seeds)) {
ebac4655
JA		 617 td_verror(td, EIO);
618 close(fd);
619 return 1;
620 }
621
622 close(fd);
623
6dfd46b9
JA		 624 os_random_seed(seeds[0], &td->bsrange_state);
625 os_random_seed(seeds[1], &td->verify_state);
626 os_random_seed(seeds[2], &td->rwmix_state);
ebac4655
JA		 627
628 if (td->sequential)
629 return 0;
630
9ebc27e1 631 if (td->rand_repeatable)
a6ccc7be 632 seeds[3] = DEF_RANDSEED;
ebac4655 633
0ab8db89 634 for_each_file(td, f, i) {
53cdc686
JA		 635 blocks = (f->file_size + td->min_bs - 1) / td->min_bs;
636 num_maps = blocks / BLOCKS_PER_MAP;
637 f->file_map = malloc(num_maps * sizeof(long));
638 f->num_maps = num_maps;
639 memset(f->file_map, 0, num_maps * sizeof(long));
640 }
ebac4655 641
6dfd46b9 642 os_random_seed(seeds[3], &td->random_state);
ebac4655
JA		 643 return 0;
644}
645
646static void fill_cpu_mask(os_cpu_mask_t cpumask, int cpu)
647{
648#ifdef FIO_HAVE_CPU_AFFINITY
649 unsigned int i;
650
651 CPU_ZERO(&cpumask);
652
653 for (i = 0; i < sizeof(int) * 8; i++) {
654 if ((1 << i) & cpu)
655 CPU_SET(i, &cpumask);
656 }
657#endif
658}
659
ebac4655
JA		 660static int is_empty_or_comment(char *line)
661{
662 unsigned int i;
663
664 for (i = 0; i < strlen(line); i++) {
665 if (line[i] == ';')
666 return 1;
667 if (!isspace(line[i]) && !iscntrl(line[i]))
668 return 0;
669 }
670
671 return 1;
672}
673
cb2c86fd 674static int str_rw_cb(void *data, char *mem)
ebac4655 675{
cb2c86fd
JA		 676 struct thread_data *td = data;
677
ebac4655
JA		 678 if (!strncmp(mem, "read", 4) || !strncmp(mem, "0", 1)) {
679 td->ddir = DDIR_READ;
680 td->sequential = 1;
681 return 0;
682 } else if (!strncmp(mem, "randread", 8)) {
683 td->ddir = DDIR_READ;
684 td->sequential = 0;
685 return 0;
686 } else if (!strncmp(mem, "write", 5) || !strncmp(mem, "1", 1)) {
687 td->ddir = DDIR_WRITE;
688 td->sequential = 1;
689 return 0;
690 } else if (!strncmp(mem, "randwrite", 9)) {
691 td->ddir = DDIR_WRITE;
692 td->sequential = 0;
693 return 0;
3d60d1ed
JA		 694 } else if (!strncmp(mem, "rw", 2)) {
695 td->ddir = 0;
696 td->iomix = 1;
697 td->sequential = 1;
698 return 0;
699 } else if (!strncmp(mem, "randrw", 6)) {
700 td->ddir = 0;
701 td->iomix = 1;
702 td->sequential = 0;
703 return 0;
ebac4655
JA		 704 }
705
3b70d7e5 706 log_err("fio: data direction: read, write, randread, randwrite, rw, randrw\n");
ebac4655
JA		 707 return 1;
708}
709
cb2c86fd 710static int str_verify_cb(void *data, char *mem)
ebac4655 711{
cb2c86fd
JA		 712 struct thread_data *td = data;
713
ebac4655
JA		 714 if (!strncmp(mem, "0", 1)) {
715 td->verify = VERIFY_NONE;
716 return 0;
717 } else if (!strncmp(mem, "md5", 3) || !strncmp(mem, "1", 1)) {
718 td->verify = VERIFY_MD5;
719 return 0;
720 } else if (!strncmp(mem, "crc32", 5)) {
721 td->verify = VERIFY_CRC32;
722 return 0;
723 }
724
3b70d7e5 725 log_err("fio: verify types: md5, crc32\n");
ebac4655
JA		 726 return 1;
727}
728
cb2c86fd 729static int str_mem_cb(void *data, char *mem)
ebac4655 730{
cb2c86fd
JA		 731 struct thread_data *td = data;
732
ebac4655
JA		 733 if (!strncmp(mem, "malloc", 6)) {
734 td->mem_type = MEM_MALLOC;
735 return 0;
736 } else if (!strncmp(mem, "shm", 3)) {
737 td->mem_type = MEM_SHM;
738 return 0;
739 } else if (!strncmp(mem, "mmap", 4)) {
740 td->mem_type = MEM_MMAP;
741 return 0;
742 }
743
3b70d7e5 744 log_err("fio: mem type: malloc, shm, mmap\n");
ebac4655
JA		 745 return 1;
746}
747
cb2c86fd 748static int str_ioengine_cb(void *data, char *str)
ebac4655 749{
cb2c86fd
JA		 750 struct thread_data *td = data;
751
2866c82d
JA		 752 td->io_ops = load_ioengine(td, str);
753 if (td->io_ops)
b990b5c0 754 return 0;
ebac4655 755
b990b5c0 756 log_err("fio: ioengine: { linuxaio, aio, libaio }, posixaio, sync, mmap, sgio, splice, cpu\n");
ebac4655
JA		 757 return 1;
758}
759
e1f36503
JA		 760static int str_lockmem_cb(void fio_unused *data, unsigned long *val)
761{
762 mlock_size = *val;
763 return 0;
764}
765
766static int str_prioclass_cb(void *data, unsigned int *val)
767{
768 struct thread_data *td = data;
769
770 td->ioprio |= *val << IOPRIO_CLASS_SHIFT;
771 return 0;
772}
773
774static int str_prio_cb(void *data, unsigned int *val)
775{
776 struct thread_data *td = data;
777
778 td->ioprio |= *val;
779 return 0;
780}
781
782static int str_exitall_cb(void)
783{
784 exitall_on_terminate = 1;
785 return 0;
786}
787
788static int str_cpumask_cb(void *data, unsigned int *val)
789{
790 struct thread_data *td = data;
791
792 fill_cpu_mask(td->cpumask, *val);
793 return 0;
794}
795
07261983
JA		 796/*
797 * This is our [ini] type file parser.
798 */
0c7e37a0 799int parse_jobs_ini(char *file, int stonewall_flag)
ebac4655 800{
e1f36503 801 unsigned int global;
ebac4655 802 struct thread_data *td;
ef899b63 803 char *string, *name, *tmpbuf;
ebac4655
JA		 804 fpos_t off;
805 FILE *f;
806 char *p;
0c7e37a0 807 int ret = 0, stonewall;
ebac4655
JA		 808
809 f = fopen(file, "r");
810 if (!f) {
aea47d44 811 perror("fopen job file");
ebac4655
JA		 812 return 1;
813 }
814
815 string = malloc(4096);
816 name = malloc(256);
ef899b63 817 tmpbuf = malloc(4096);
ebac4655 818
0c7e37a0 819 stonewall = stonewall_flag;
ebac4655 820 while ((p = fgets(string, 4096, f)) != NULL) {
45410acb
JA		 821 if (ret)
822 break;
ebac4655
JA		 823 if (is_empty_or_comment(p))
824 continue;
825 if (sscanf(p, "[%s]", name) != 1)
826 continue;
827
828 global = !strncmp(name, "global", 6);
829
830 name[strlen(name) - 1] = '\0';
831
832 td = get_new_job(global, &def_thread);
45410acb
JA		 833 if (!td) {
834 ret = 1;
835 break;
836 }
ebac4655 837
972cfd25
JA		 838 /*
839 * Seperate multiple job files by a stonewall
840 */
f9481919 841 if (!global && stonewall) {
972cfd25
JA		 842 td->stonewall = stonewall;
843 stonewall = 0;
844 }
845
ebac4655
JA		 846 fgetpos(f, &off);
847 while ((p = fgets(string, 4096, f)) != NULL) {
848 if (is_empty_or_comment(p))
849 continue;
850 if (strstr(p, "["))
851 break;
e1f36503 852
b6754f9d 853 strip_blank_front(&p);
4ae3f763 854 strip_blank_end(p);
aea47d44 855
e1f36503 856 fgetpos(f, &off);
ebac4655 857
45410acb
JA		 858 /*
859 * Don't break here, continue parsing options so we
860 * dump all the bad ones. Makes trial/error fixups
861 * easier on the user.
862 */
e1f36503 863 ret = parse_option(p, options, td);
ebac4655 864 }
ebac4655 865
45410acb
JA		 866 if (!ret) {
867 fsetpos(f, &off);
868 ret = add_job(td, name, 0);
869 }
870 if (ret)
871 break;
ebac4655
JA		 872 }
873
874 free(string);
875 free(name);
ef899b63 876 free(tmpbuf);
ebac4655 877 fclose(f);
45410acb 878 return ret;
ebac4655
JA		 879}
880
881static int fill_def_thread(void)
882{
883 memset(&def_thread, 0, sizeof(def_thread));
884
885 if (fio_getaffinity(getpid(), &def_thread.cpumask) == -1) {
886 perror("sched_getaffinity");
887 return 1;
888 }
889
890 /*
891 * fill globals
892 */
893 def_thread.ddir = DDIR_READ;
3d60d1ed 894 def_thread.iomix = 0;
9ebc27e1 895 def_thread.bs = DEF_BS;
ebac4655
JA		 896 def_thread.min_bs = -1;
897 def_thread.max_bs = -1;
9ebc27e1 898 def_thread.odirect = DEF_ODIRECT;
ebac4655 899 def_thread.ratecycle = DEF_RATE_CYCLE;
9ebc27e1 900 def_thread.sequential = DEF_SEQUENTIAL;
972cfd25 901 def_thread.timeout = def_timeout;
ebac4655
JA		 902 def_thread.overwrite = DEF_OVERWRITE;
903 def_thread.invalidate_cache = DEF_INVALIDATE;
904 def_thread.sync_io = DEF_SYNCIO;
905 def_thread.mem_type = MEM_MALLOC;
906 def_thread.bw_avg_time = DEF_BWAVGTIME;
907 def_thread.create_serialize = DEF_CREATE_SER;
908 def_thread.create_fsync = DEF_CREATE_FSYNC;
909 def_thread.loops = DEF_LOOPS;
910 def_thread.verify = DEF_VERIFY;
911 def_thread.stonewall = DEF_STONEWALL;
912 def_thread.numjobs = DEF_NUMJOBS;
913 def_thread.use_thread = DEF_USE_THREAD;
a6ccc7be
JA		 914 def_thread.rwmixcycle = DEF_RWMIX_CYCLE;
915 def_thread.rwmixread = DEF_RWMIX_READ;
b6f4d880 916 def_thread.nice = DEF_NICE;
9ebc27e1 917 def_thread.rand_repeatable = DEF_RAND_REPEAT;
53cdc686 918 def_thread.nr_files = DEF_NR_FILES;
f6cbb269 919 def_thread.unlink = DEF_UNLINK;
ec94ec56
JA		 920 def_thread.write_bw_log = write_bw_log;
921 def_thread.write_lat_log = write_lat_log;
ebac4655
JA		 922#ifdef FIO_HAVE_DISK_UTIL
923 def_thread.do_disk_util = 1;
924#endif
925
926 return 0;
927}
928
0ab8db89 929static void usage(void)
4785f995
JA		 930{
931 printf("%s\n", fio_version_string);
47623c72 932 printf("\t-o Write output to file\n");
4785f995 933 printf("\t-t Runtime in seconds\n");
4785f995
JA		 934 printf("\t-l Generate per-job latency logs\n");
935 printf("\t-w Generate per-job bandwidth logs\n");
c6ae0a5b 936 printf("\t-m Minimal (terse) output\n");
4785f995
JA		 937 printf("\t-v Print version info and exit\n");
938}
939
972cfd25 940static int parse_cmd_line(int argc, char *argv[])
ebac4655 941{
972cfd25 942 int c, idx = 1, ini_idx = 0;
ebac4655 943
2e77841b 944 while ((c = getopt(argc, argv, "t:o:lwvhm")) != EOF) {
ebac4655 945 switch (c) {
ebac4655 946 case 't':
972cfd25 947 def_timeout = atoi(optarg);
774a6177 948 idx = optind;
ebac4655 949 break;
ebac4655
JA		 950 case 'l':
951 write_lat_log = 1;
774a6177 952 idx = optind;
ebac4655
JA		 953 break;
954 case 'w':
955 write_bw_log = 1;
774a6177 956 idx = optind;
ebac4655 957 break;
9ebc27e1 958 case 'o':
eb8bbf48
JA		 959 f_out = fopen(optarg, "w+");
960 if (!f_out) {
961 perror("fopen output");
962 exit(1);
963 }
964 f_err = f_out;
774a6177 965 idx = optind;
eb8bbf48 966 break;
c6ae0a5b
JA		 967 case 'm':
968 terse_output = 1;
774a6177 969 idx = optind;
c6ae0a5b 970 break;
4785f995 971 case 'h':
0ab8db89 972 usage();
4785f995 973 exit(0);
ebac4655
JA		 974 case 'v':
975 printf("%s\n", fio_version_string);
976 exit(0);
977 }
978 }
c9fad893 979
972cfd25
JA		 980 while (idx < argc) {
981 ini_idx++;
982 ini_file = realloc(ini_file, ini_idx * sizeof(char *));
983 ini_file[ini_idx - 1] = strdup(argv[idx]);
984 idx++;
985 }
774a6177 986
eb8bbf48
JA		 987 if (!f_out) {
988 f_out = stdout;
989 f_err = stderr;
990 }
972cfd25
JA		 991
992 return ini_idx;
ebac4655
JA		 993}
994
995static void free_shm(void)
996{
997 struct shmid_ds sbuf;
998
999 if (threads) {
2c0ecd28 1000 shmdt((void *) threads);
ebac4655
JA		 1001 threads = NULL;
1002 shmctl(shm_id, IPC_RMID, &sbuf);
1003 }
1004}
1005
906c8d75
JA		 1006/*
1007 * The thread area is shared between the main process and the job
1008 * threads/processes. So setup a shared memory segment that will hold
1009 * all the job info.
1010 */
ebac4655
JA		 1011static int setup_thread_area(void)
1012{
1013 /*
1014 * 1024 is too much on some machines, scale max_jobs if
1015 * we get a failure that looks like too large a shm segment
1016 */
1017 do {
906c8d75 1018 size_t size = max_jobs * sizeof(struct thread_data);
ebac4655 1019
906c8d75 1020 shm_id = shmget(0, size, IPC_CREAT | 0600);
ebac4655
JA		 1021 if (shm_id != -1)
1022 break;
1023 if (errno != EINVAL) {
1024 perror("shmget");
1025 break;
1026 }
1027
1028 max_jobs >>= 1;
1029 } while (max_jobs);
1030
1031 if (shm_id == -1)
1032 return 1;
1033
1034 threads = shmat(shm_id, NULL, 0);
1035 if (threads == (void *) -1) {
1036 perror("shmat");
1037 return 1;
1038 }
1039
1040 atexit(free_shm);
1041 return 0;
1042}
1043
1044int parse_options(int argc, char *argv[])
1045{
972cfd25
JA		 1046 int job_files, i;
1047
ebac4655
JA		 1048 if (setup_thread_area())
1049 return 1;
1050 if (fill_def_thread())
1051 return 1;
1052
972cfd25
JA		 1053 job_files = parse_cmd_line(argc, argv);
1054 if (!job_files) {
1055 log_err("Need job file(s)\n");
0ab8db89 1056 usage();
ebac4655
JA		 1057 return 1;
1058 }
1059
972cfd25
JA		 1060 for (i = 0; i < job_files; i++) {
1061 if (fill_def_thread())
1062 return 1;
0c7e37a0 1063 if (parse_jobs_ini(ini_file[i], i))
972cfd25 1064 return 1;
88c6ed80 1065 free(ini_file[i]);
972cfd25 1066 }
ebac4655 1067
88c6ed80 1068 free(ini_file);
ebac4655
JA		 1069 return 0;
1070}
fio - Flexible IO Tester