Add pread/pwrite support to sync engine
[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>
b4692828 11#include <getopt.h>
ebac4655
JA
12#include <sys/ipc.h>
13#include <sys/shm.h>
14#include <sys/types.h>
15#include <sys/stat.h>
16
17#include "fio.h"
cb2c86fd 18#include "parse.h"
ebac4655 19
e6203e9e 20static char fio_version_string[] = "fio 1.17.1";
214e1eca 21
ee738499 22#define FIO_RANDSEED (0xb1899bedUL)
ebac4655 23
214e1eca
JA
24static char **ini_file;
25static int max_jobs = MAX_JOBS;
cca73aa7 26static int dump_cmdline;
e1f36503 27
214e1eca
JA
28struct thread_data def_thread;
29struct thread_data *threads = NULL;
e1f36503 30
214e1eca
JA
31int exitall_on_terminate = 0;
32int terse_output = 0;
e592a06b 33int eta_print;
214e1eca
JA
34unsigned long long mlock_size = 0;
35FILE *f_out = NULL;
36FILE *f_err = NULL;
ee738499 37
214e1eca 38int write_bw_log = 0;
4241ea8f 39int read_only = 0;
214e1eca
JA
40
41static int def_timeout = 0;
42static int write_lat_log = 0;
e1f36503 43
214e1eca 44static int prev_group_jobs;
b4692828
JA
45
46/*
47 * Command line options. These will contain the above, plus a few
48 * extra that only pertain to fio itself and not jobs.
49 */
214e1eca 50static struct option long_options[FIO_NR_OPTIONS] = {
b4692828
JA
51 {
52 .name = "output",
53 .has_arg = required_argument,
54 .val = 'o',
55 },
56 {
57 .name = "timeout",
58 .has_arg = required_argument,
59 .val = 't',
60 },
61 {
62 .name = "latency-log",
63 .has_arg = required_argument,
64 .val = 'l',
65 },
66 {
67 .name = "bandwidth-log",
68 .has_arg = required_argument,
69 .val = 'b',
70 },
71 {
72 .name = "minimal",
73 .has_arg = optional_argument,
74 .val = 'm',
75 },
76 {
77 .name = "version",
78 .has_arg = no_argument,
79 .val = 'v',
80 },
fd28ca49
JA
81 {
82 .name = "help",
83 .has_arg = no_argument,
84 .val = 'h',
85 },
86 {
87 .name = "cmdhelp",
320beefe 88 .has_arg = optional_argument,
fd28ca49
JA
89 .val = 'c',
90 },
cca73aa7
JA
91 {
92 .name = "showcmd",
93 .has_arg = no_argument,
724e4435
JA
94 .val = 's',
95 },
96 {
97 .name = "readonly",
98 .has_arg = no_argument,
99 .val = 'r',
cca73aa7 100 },
e592a06b
AC
101 {
102 .name = "eta",
103 .has_arg = required_argument,
104 .val = 'e',
105 },
b4692828
JA
106 {
107 .name = NULL,
108 },
109};
110
9728ce37
JB
111FILE *get_f_out()
112{
113 return f_out;
114}
115
116FILE *get_f_err()
117{
118 return f_err;
119}
120
906c8d75
JA
121/*
122 * Return a free job structure.
123 */
ebac4655
JA
124static struct thread_data *get_new_job(int global, struct thread_data *parent)
125{
126 struct thread_data *td;
127
128 if (global)
129 return &def_thread;
130 if (thread_number >= max_jobs)
131 return NULL;
132
133 td = &threads[thread_number++];
ddaeaa5a 134 *td = *parent;
ebac4655 135
cade3ef4 136 dup_files(td, parent);
d23bb327 137 options_mem_dupe(td);
cade3ef4 138
ebac4655 139 td->thread_number = thread_number;
ebac4655
JA
140 return td;
141}
142
143static void put_job(struct thread_data *td)
144{
549577a7
JA
145 if (td == &def_thread)
146 return;
147
16edf25d 148 if (td->error)
6d86144d 149 log_info("fio: %s\n", td->verror);
16edf25d 150
ebac4655
JA
151 memset(&threads[td->thread_number - 1], 0, sizeof(*td));
152 thread_number--;
153}
154
127f6865
JA
155static int setup_rate(struct thread_data *td)
156{
157 unsigned long nr_reads_per_msec;
158 unsigned long long rate;
159 unsigned int bs;
160
2dc1bbeb 161 if (!td->o.rate && !td->o.rate_iops)
127f6865
JA
162 return 0;
163
164 if (td_rw(td))
2dc1bbeb 165 bs = td->o.rw_min_bs;
127f6865 166 else if (td_read(td))
2dc1bbeb 167 bs = td->o.min_bs[DDIR_READ];
127f6865 168 else
2dc1bbeb 169 bs = td->o.min_bs[DDIR_WRITE];
127f6865 170
2dc1bbeb
JA
171 if (td->o.rate) {
172 rate = td->o.rate;
127f6865
JA
173 nr_reads_per_msec = (rate * 1024 * 1000LL) / bs;
174 } else
2dc1bbeb 175 nr_reads_per_msec = td->o.rate_iops * 1000UL;
127f6865
JA
176
177 if (!nr_reads_per_msec) {
178 log_err("rate lower than supported\n");
179 return -1;
180 }
181
182 td->rate_usec_cycle = 1000000000ULL / nr_reads_per_msec;
183 td->rate_pending_usleep = 0;
184 return 0;
185}
186
dad915e3
JA
187/*
188 * Lazy way of fixing up options that depend on each other. We could also
189 * define option callback handlers, but this is easier.
190 */
4e991c23 191static int fixup_options(struct thread_data *td)
e1f36503 192{
2dc1bbeb 193 struct thread_options *o = &td->o;
dad915e3 194
724e4435
JA
195 if (read_only && td_write(td)) {
196 log_err("fio: job <%s> has write bit set, but fio is in read-only mode\n", td->o.name);
197 return 1;
198 }
199
e47f799f
JA
200 if (o->rwmix[DDIR_READ] + o->rwmix[DDIR_WRITE] > 100)
201 o->rwmix[DDIR_WRITE] = 100 - o->rwmix[DDIR_READ];
2dc1bbeb
JA
202
203 if (o->write_iolog_file && o->read_iolog_file) {
076efc7c 204 log_err("fio: read iolog overrides write_iolog\n");
2dc1bbeb
JA
205 free(o->write_iolog_file);
206 o->write_iolog_file = NULL;
076efc7c 207 }
16b462ae
JA
208
209 if (td->io_ops->flags & FIO_SYNCIO)
2dc1bbeb 210 o->iodepth = 1;
16b462ae 211 else {
2dc1bbeb
JA
212 if (!o->iodepth)
213 o->iodepth = o->open_files;
16b462ae
JA
214 }
215
216 /*
217 * only really works for sequential io for now, and with 1 file
218 */
2dc1bbeb
JA
219 if (o->zone_size && td_random(td) && o->open_files == 1)
220 o->zone_size = 0;
16b462ae
JA
221
222 /*
223 * Reads can do overwrites, we always need to pre-create the file
224 */
225 if (td_read(td) || td_rw(td))
2dc1bbeb 226 o->overwrite = 1;
16b462ae 227
2dc1bbeb
JA
228 if (!o->min_bs[DDIR_READ])
229 o->min_bs[DDIR_READ]= o->bs[DDIR_READ];
230 if (!o->max_bs[DDIR_READ])
231 o->max_bs[DDIR_READ] = o->bs[DDIR_READ];
232 if (!o->min_bs[DDIR_WRITE])
233 o->min_bs[DDIR_WRITE]= o->bs[DDIR_WRITE];
234 if (!o->max_bs[DDIR_WRITE])
235 o->max_bs[DDIR_WRITE] = o->bs[DDIR_WRITE];
a00735e6 236
2dc1bbeb 237 o->rw_min_bs = min(o->min_bs[DDIR_READ], o->min_bs[DDIR_WRITE]);
a00735e6 238
2dc1bbeb
JA
239 if (!o->file_size_high)
240 o->file_size_high = o->file_size_low;
9c60ce64 241
2dc1bbeb 242 if (o->norandommap && o->verify != VERIFY_NONE) {
bb8895e0 243 log_err("fio: norandommap given, verify disabled\n");
2dc1bbeb 244 o->verify = VERIFY_NONE;
bb8895e0 245 }
2dc1bbeb 246 if (o->bs_unaligned && (o->odirect || td->io_ops->flags & FIO_RAWIO))
690adba3 247 log_err("fio: bs_unaligned may not work with raw io\n");
e0a22335 248
48097d5c
JA
249 /*
250 * thinktime_spin must be less than thinktime
251 */
2dc1bbeb
JA
252 if (o->thinktime_spin > o->thinktime)
253 o->thinktime_spin = o->thinktime;
e916b390
JA
254
255 /*
256 * The low water mark cannot be bigger than the iodepth
257 */
2dc1bbeb 258 if (o->iodepth_low > o->iodepth || !o->iodepth_low) {
9467b77c
JA
259 /*
260 * syslet work around - if the workload is sequential,
261 * we want to let the queue drain all the way down to
262 * avoid seeking between async threads
263 */
264 if (!strcmp(td->io_ops->name, "syslet-rw") && !td_random(td))
2dc1bbeb 265 o->iodepth_low = 1;
9467b77c 266 else
2dc1bbeb 267 o->iodepth_low = o->iodepth;
9467b77c 268 }
cb5ab512
JA
269
270 /*
271 * If batch number isn't set, default to the same as iodepth
272 */
2dc1bbeb
JA
273 if (o->iodepth_batch > o->iodepth || !o->iodepth_batch)
274 o->iodepth_batch = o->iodepth;
b5af8293 275
2dc1bbeb
JA
276 if (o->nr_files > td->files_index)
277 o->nr_files = td->files_index;
9f9214f2 278
2dc1bbeb
JA
279 if (o->open_files > o->nr_files || !o->open_files)
280 o->open_files = o->nr_files;
4e991c23 281
2dc1bbeb 282 if ((o->rate && o->rate_iops) || (o->ratemin && o->rate_iops_min)) {
4e991c23
JA
283 log_err("fio: rate and rate_iops are mutually exclusive\n");
284 return 1;
285 }
2dc1bbeb 286 if ((o->rate < o->ratemin) || (o->rate_iops < o->rate_iops_min)) {
4e991c23
JA
287 log_err("fio: minimum rate exceeds rate\n");
288 return 1;
289 }
290
cf4464ca
JA
291 if (!o->timeout && o->time_based) {
292 log_err("fio: time_based requires a runtime/timeout setting\n");
293 o->time_based = 0;
294 }
295
4e991c23 296 return 0;
e1f36503
JA
297}
298
f8977ee6
JA
299/*
300 * This function leaks the buffer
301 */
302static char *to_kmg(unsigned int val)
303{
304 char *buf = malloc(32);
f3502ba2 305 char post[] = { 0, 'K', 'M', 'G', 'P', 'E', 0 };
f8977ee6
JA
306 char *p = post;
307
245142ff 308 do {
f8977ee6
JA
309 if (val & 1023)
310 break;
311
312 val >>= 10;
313 p++;
245142ff 314 } while (*p);
f8977ee6
JA
315
316 snprintf(buf, 31, "%u%c", val, *p);
317 return buf;
318}
319
09629a90
JA
320/* External engines are specified by "external:name.o") */
321static const char *get_engine_name(const char *str)
322{
323 char *p = strstr(str, ":");
324
325 if (!p)
326 return str;
327
328 p++;
329 strip_blank_front(&p);
330 strip_blank_end(p);
331 return p;
332}
333
e132cbae
JA
334static int exists_and_not_file(const char *filename)
335{
336 struct stat sb;
337
338 if (lstat(filename, &sb) == -1)
339 return 0;
340
341 if (S_ISREG(sb.st_mode))
342 return 0;
343
344 return 1;
345}
346
9c60ce64
JA
347/*
348 * Initialize the various random states we need (random io, block size ranges,
349 * read/write mix, etc).
350 */
351static int init_random_state(struct thread_data *td)
352{
353 unsigned long seeds[6];
68727076 354 int fd;
9c60ce64
JA
355
356 fd = open("/dev/urandom", O_RDONLY);
357 if (fd == -1) {
358 td_verror(td, errno, "open");
359 return 1;
360 }
361
362 if (read(fd, seeds, sizeof(seeds)) < (int) sizeof(seeds)) {
363 td_verror(td, EIO, "read");
364 close(fd);
365 return 1;
366 }
367
368 close(fd);
369
370 os_random_seed(seeds[0], &td->bsrange_state);
371 os_random_seed(seeds[1], &td->verify_state);
372 os_random_seed(seeds[2], &td->rwmix_state);
373
2dc1bbeb 374 if (td->o.file_service_type == FIO_FSERVICE_RANDOM)
9c60ce64
JA
375 os_random_seed(seeds[3], &td->next_file_state);
376
377 os_random_seed(seeds[5], &td->file_size_state);
378
379 if (!td_random(td))
380 return 0;
381
2dc1bbeb 382 if (td->o.rand_repeatable)
9c60ce64
JA
383 seeds[4] = FIO_RANDSEED * td->thread_number;
384
9c60ce64
JA
385 os_random_seed(seeds[4], &td->random_state);
386 return 0;
387}
388
906c8d75
JA
389/*
390 * Adds a job to the list of things todo. Sanitizes the various options
391 * to make sure we don't have conflicts, and initializes various
392 * members of td.
393 */
75154845 394static int add_job(struct thread_data *td, const char *jobname, int job_add_num)
ebac4655 395{
413dd459
JA
396 const char *ddir_str[] = { NULL, "read", "write", "rw", NULL,
397 "randread", "randwrite", "randrw" };
af52b345 398 unsigned int i;
09629a90 399 const char *engine;
af52b345 400 char fname[PATH_MAX];
e132cbae 401 int numjobs, file_alloced;
ebac4655 402
ebac4655
JA
403 /*
404 * the def_thread is just for options, it's not a real job
405 */
406 if (td == &def_thread)
407 return 0;
408
cca73aa7
JA
409 /*
410 * if we are just dumping the output command line, don't add the job
411 */
412 if (dump_cmdline) {
413 put_job(td);
414 return 0;
415 }
416
2dc1bbeb 417 engine = get_engine_name(td->o.ioengine);
09629a90
JA
418 td->io_ops = load_ioengine(td, engine);
419 if (!td->io_ops) {
420 log_err("fio: failed to load engine %s\n", engine);
205927a3 421 goto err;
09629a90 422 }
df64119d 423
2dc1bbeb 424 if (td->o.use_thread)
9cedf167
JA
425 nr_thread++;
426 else
427 nr_process++;
428
2dc1bbeb 429 if (td->o.odirect)
690adba3
JA
430 td->io_ops->flags |= FIO_RAWIO;
431
e132cbae 432 file_alloced = 0;
2dc1bbeb 433 if (!td->o.filename && !td->files_index) {
e132cbae 434 file_alloced = 1;
80be24f4 435
2dc1bbeb 436 if (td->o.nr_files == 1 && exists_and_not_file(jobname))
e132cbae 437 add_file(td, jobname);
7b05a215 438 else {
2dc1bbeb 439 for (i = 0; i < td->o.nr_files; i++) {
e132cbae 440 sprintf(fname, "%s.%d.%d", jobname, td->thread_number, i);
7b05a215
JA
441 add_file(td, fname);
442 }
af52b345 443 }
0af7b542 444 }
ebac4655 445
4e991c23
JA
446 if (fixup_options(td))
447 goto err;
e0a22335 448
07eb79df
JA
449 if (td->io_ops->flags & FIO_DISKLESSIO) {
450 struct fio_file *f;
451
452 for_each_file(td, f, i)
453 f->real_file_size = -1ULL;
454 }
455
07739b57 456 td->mutex = fio_sem_init(0);
ebac4655 457
756867bd
JA
458 td->ts.clat_stat[0].min_val = td->ts.clat_stat[1].min_val = ULONG_MAX;
459 td->ts.slat_stat[0].min_val = td->ts.slat_stat[1].min_val = ULONG_MAX;
460 td->ts.bw_stat[0].min_val = td->ts.bw_stat[1].min_val = ULONG_MAX;
1e3d53ac 461 td->ddir_nr = td->o.ddir_nr;
ebac4655 462
b3d62a75
JA
463 if ((td->o.stonewall || td->o.numjobs > 1 || td->o.new_group)
464 && prev_group_jobs) {
3c5df6fa 465 prev_group_jobs = 0;
ebac4655 466 groupid++;
3c5df6fa 467 }
ebac4655
JA
468
469 td->groupid = groupid;
3c5df6fa 470 prev_group_jobs++;
ebac4655 471
9c60ce64
JA
472 if (init_random_state(td))
473 goto err;
474
ebac4655
JA
475 if (setup_rate(td))
476 goto err;
477
2dc1bbeb 478 if (td->o.write_lat_log) {
756867bd
JA
479 setup_log(&td->ts.slat_log);
480 setup_log(&td->ts.clat_log);
ebac4655 481 }
2dc1bbeb 482 if (td->o.write_bw_log)
756867bd 483 setup_log(&td->ts.bw_log);
ebac4655 484
2dc1bbeb
JA
485 if (!td->o.name)
486 td->o.name = strdup(jobname);
01452055 487
c6ae0a5b 488 if (!terse_output) {
b990b5c0 489 if (!job_add_num) {
ba0fbe10 490 if (!strcmp(td->io_ops->name, "cpuio"))
2dc1bbeb 491 log_info("%s: ioengine=cpu, cpuload=%u, cpucycle=%u\n", td->o.name, td->o.cpuload, td->o.cpucycle);
f8977ee6
JA
492 else {
493 char *c1, *c2, *c3, *c4;
494
2dc1bbeb
JA
495 c1 = to_kmg(td->o.min_bs[DDIR_READ]);
496 c2 = to_kmg(td->o.max_bs[DDIR_READ]);
497 c3 = to_kmg(td->o.min_bs[DDIR_WRITE]);
498 c4 = to_kmg(td->o.max_bs[DDIR_WRITE]);
f8977ee6 499
2dc1bbeb 500 log_info("%s: (g=%d): rw=%s, bs=%s-%s/%s-%s, ioengine=%s, iodepth=%u\n", td->o.name, td->groupid, ddir_str[td->o.td_ddir], c1, c2, c3, c4, td->io_ops->name, td->o.iodepth);
f8977ee6
JA
501
502 free(c1);
503 free(c2);
504 free(c3);
505 free(c4);
506 }
b990b5c0 507 } else if (job_add_num == 1)
6d86144d 508 log_info("...\n");
c6ae0a5b 509 }
ebac4655
JA
510
511 /*
512 * recurse add identical jobs, clear numjobs and stonewall options
513 * as they don't apply to sub-jobs
514 */
2dc1bbeb 515 numjobs = td->o.numjobs;
ebac4655
JA
516 while (--numjobs) {
517 struct thread_data *td_new = get_new_job(0, td);
518
519 if (!td_new)
520 goto err;
521
2dc1bbeb
JA
522 td_new->o.numjobs = 1;
523 td_new->o.stonewall = 0;
92c1d41f 524 td_new->o.new_group = 0;
e132cbae
JA
525
526 if (file_alloced) {
2dc1bbeb 527 td_new->o.filename = NULL;
e132cbae
JA
528 td_new->files_index = 0;
529 td_new->files = NULL;
530 }
531
75154845 532 job_add_num = numjobs - 1;
ebac4655 533
75154845 534 if (add_job(td_new, jobname, job_add_num))
ebac4655
JA
535 goto err;
536 }
3c5df6fa 537
ebac4655
JA
538 return 0;
539err:
540 put_job(td);
541 return -1;
542}
543
ebac4655
JA
544static int is_empty_or_comment(char *line)
545{
546 unsigned int i;
547
548 for (i = 0; i < strlen(line); i++) {
549 if (line[i] == ';')
550 return 1;
5cc2da30
IM
551 if (line[i] == '#')
552 return 1;
ebac4655
JA
553 if (!isspace(line[i]) && !iscntrl(line[i]))
554 return 0;
555 }
556
557 return 1;
558}
559
07261983
JA
560/*
561 * This is our [ini] type file parser.
562 */
1e97cce9 563static int parse_jobs_ini(char *file, int stonewall_flag)
ebac4655 564{
e1f36503 565 unsigned int global;
ebac4655 566 struct thread_data *td;
fee3bb48 567 char *string, *name;
ebac4655
JA
568 FILE *f;
569 char *p;
0c7e37a0 570 int ret = 0, stonewall;
097b2991 571 int first_sect = 1;
ccf8f127 572 int skip_fgets = 0;
ebac4655 573
5a729cbe
AC
574 if (!strcmp(file, "-"))
575 f = stdin;
576 else
577 f = fopen(file, "r");
578
ebac4655 579 if (!f) {
aea47d44 580 perror("fopen job file");
ebac4655
JA
581 return 1;
582 }
583
584 string = malloc(4096);
7f7e6e59
JA
585
586 /*
587 * it's really 256 + small bit, 280 should suffice
588 */
589 name = malloc(280);
590 memset(name, 0, 280);
ebac4655 591
0c7e37a0 592 stonewall = stonewall_flag;
7c124ac1 593 do {
ccf8f127
JA
594 /*
595 * if skip_fgets is set, we already have loaded a line we
596 * haven't handled.
597 */
598 if (!skip_fgets) {
599 p = fgets(string, 4095, f);
600 if (!p)
601 break;
602 }
cdc7f193 603
ccf8f127 604 skip_fgets = 0;
cdc7f193 605 strip_blank_front(&p);
6c7c7da1 606 strip_blank_end(p);
cdc7f193 607
ebac4655
JA
608 if (is_empty_or_comment(p))
609 continue;
6c7c7da1 610 if (sscanf(p, "[%255s]", name) != 1) {
088b4207
JA
611 log_err("fio: option <%s> outside of [] job section\n", p);
612 break;
6c7c7da1 613 }
ebac4655
JA
614
615 global = !strncmp(name, "global", 6);
616
617 name[strlen(name) - 1] = '\0';
618
cca73aa7 619 if (dump_cmdline) {
097b2991
JA
620 if (first_sect)
621 log_info("fio ");
cca73aa7
JA
622 if (!global)
623 log_info("--name=%s ", name);
097b2991 624 first_sect = 0;
cca73aa7
JA
625 }
626
ebac4655 627 td = get_new_job(global, &def_thread);
45410acb
JA
628 if (!td) {
629 ret = 1;
630 break;
631 }
ebac4655 632
972cfd25
JA
633 /*
634 * Seperate multiple job files by a stonewall
635 */
f9481919 636 if (!global && stonewall) {
2dc1bbeb 637 td->o.stonewall = stonewall;
972cfd25
JA
638 stonewall = 0;
639 }
640
ebac4655
JA
641 while ((p = fgets(string, 4096, f)) != NULL) {
642 if (is_empty_or_comment(p))
643 continue;
e1f36503 644
b6754f9d 645 strip_blank_front(&p);
7c124ac1 646
ccf8f127
JA
647 /*
648 * new section, break out and make sure we don't
649 * fgets() a new line at the top.
650 */
651 if (p[0] == '[') {
652 skip_fgets = 1;
7c124ac1 653 break;
ccf8f127 654 }
7c124ac1 655
4ae3f763 656 strip_blank_end(p);
aea47d44 657
45410acb
JA
658 /*
659 * Don't break here, continue parsing options so we
660 * dump all the bad ones. Makes trial/error fixups
661 * easier on the user.
662 */
214e1eca 663 ret |= fio_option_parse(td, p);
cca73aa7
JA
664 if (!ret && dump_cmdline)
665 log_info("--%s ", p);
ebac4655 666 }
ebac4655 667
ccf8f127 668 if (!ret)
45410acb 669 ret = add_job(td, name, 0);
ccf8f127 670 else {
b1508cf9
JA
671 log_err("fio: job %s dropped\n", name);
672 put_job(td);
45410acb 673 }
7c124ac1 674 } while (!ret);
ebac4655 675
cca73aa7
JA
676 if (dump_cmdline)
677 log_info("\n");
678
ebac4655
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679 free(string);
680 free(name);
5a729cbe
AC
681 if (f != stdin)
682 fclose(f);
45410acb 683 return ret;
ebac4655
JA
684}
685
686static int fill_def_thread(void)
687{
688 memset(&def_thread, 0, sizeof(def_thread));
689
375b2695 690 fio_getaffinity(getpid(), &def_thread.o.cpumask);
ebac4655
JA
691
692 /*
ee738499 693 * fill default options
ebac4655 694 */
214e1eca 695 fio_fill_default_options(&def_thread);
ee738499 696
2dc1bbeb
JA
697 def_thread.o.timeout = def_timeout;
698 def_thread.o.write_bw_log = write_bw_log;
699 def_thread.o.write_lat_log = write_lat_log;
ee738499 700
ebac4655
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701 return 0;
702}
703
214e1eca
JA
704static void free_shm(void)
705{
706 struct shmid_ds sbuf;
707
708 if (threads) {
709 shmdt((void *) threads);
710 threads = NULL;
711 shmctl(shm_id, IPC_RMID, &sbuf);
712 }
713}
714
715/*
716 * The thread area is shared between the main process and the job
717 * threads/processes. So setup a shared memory segment that will hold
718 * all the job info.
719 */
720static int setup_thread_area(void)
721{
722 /*
723 * 1024 is too much on some machines, scale max_jobs if
724 * we get a failure that looks like too large a shm segment
725 */
726 do {
727 size_t size = max_jobs * sizeof(struct thread_data);
728
729 shm_id = shmget(0, size, IPC_CREAT | 0600);
730 if (shm_id != -1)
731 break;
732 if (errno != EINVAL) {
733 perror("shmget");
734 break;
735 }
736
737 max_jobs >>= 1;
738 } while (max_jobs);
739
740 if (shm_id == -1)
741 return 1;
742
743 threads = shmat(shm_id, NULL, 0);
744 if (threads == (void *) -1) {
745 perror("shmat");
746 return 1;
747 }
748
749 atexit(free_shm);
750 return 0;
751}
752
0ab8db89 753static void usage(void)
4785f995
JA
754{
755 printf("%s\n", fio_version_string);
b4692828
JA
756 printf("\t--output\tWrite output to file\n");
757 printf("\t--timeout\tRuntime in seconds\n");
758 printf("\t--latency-log\tGenerate per-job latency logs\n");
759 printf("\t--bandwidth-log\tGenerate per-job bandwidth logs\n");
760 printf("\t--minimal\tMinimal (terse) output\n");
761 printf("\t--version\tPrint version info and exit\n");
fd28ca49
JA
762 printf("\t--help\t\tPrint this page\n");
763 printf("\t--cmdhelp=cmd\tPrint command help, \"all\" for all of them\n");
cca73aa7 764 printf("\t--showcmd\tTurn a job file into command line options\n");
e592a06b
AC
765 printf("\t--eta=when\tWhen ETA estimate should be printed\n");
766 printf("\t \tMay be \"always\", \"never\" or \"auto\"\n");
4785f995
JA
767}
768
972cfd25 769static int parse_cmd_line(int argc, char *argv[])
ebac4655 770{
b4692828 771 struct thread_data *td = NULL;
b1ec1da6 772 int c, ini_idx = 0, lidx, ret, dont_add_job = 0;
ebac4655 773
0be06ea2 774 while ((c = getopt_long_only(argc, argv, "", long_options, &lidx)) != -1) {
ebac4655 775 switch (c) {
b4692828
JA
776 case 't':
777 def_timeout = atoi(optarg);
778 break;
779 case 'l':
780 write_lat_log = 1;
781 break;
782 case 'w':
783 write_bw_log = 1;
784 break;
785 case 'o':
786 f_out = fopen(optarg, "w+");
787 if (!f_out) {
788 perror("fopen output");
789 exit(1);
790 }
791 f_err = f_out;
792 break;
793 case 'm':
794 terse_output = 1;
795 break;
796 case 'h':
797 usage();
798 exit(0);
fd28ca49 799 case 'c':
214e1eca 800 exit(fio_show_option_help(optarg));
cca73aa7
JA
801 case 's':
802 dump_cmdline = 1;
803 break;
724e4435
JA
804 case 'r':
805 read_only = 1;
806 break;
b4692828
JA
807 case 'v':
808 printf("%s\n", fio_version_string);
809 exit(0);
e592a06b
AC
810 case 'e':
811 if (!strcmp("always", optarg))
812 eta_print = FIO_ETA_ALWAYS;
813 else if (!strcmp("never", optarg))
814 eta_print = FIO_ETA_NEVER;
815 break;
b4692828
JA
816 case FIO_GETOPT_JOB: {
817 const char *opt = long_options[lidx].name;
818 char *val = optarg;
819
c2b1e753 820 if (!strncmp(opt, "name", 4) && td) {
2dc1bbeb 821 ret = add_job(td, td->o.name ?: "fio", 0);
c2b1e753
JA
822 if (ret) {
823 put_job(td);
824 return 0;
825 }
826 td = NULL;
827 }
b4692828 828 if (!td) {
3106f220
JA
829 int global = 0;
830
831 if (strncmp(opt, "name", 4) ||
832 !strncmp(val, "global", 6))
833 global = 1;
c2b1e753
JA
834
835 td = get_new_job(global, &def_thread);
b4692828
JA
836 if (!td)
837 return 0;
838 }
38d0adb0 839
214e1eca 840 ret = fio_cmd_option_parse(td, opt, val);
78217dfa 841 if (ret)
b1ec1da6 842 dont_add_job = 1;
b4692828
JA
843 break;
844 }
845 default:
b4692828 846 break;
ebac4655
JA
847 }
848 }
c9fad893 849
b4692828 850 if (td) {
b1ec1da6 851 if (dont_add_job)
b4692828 852 put_job(td);
b1ec1da6 853 else {
2dc1bbeb 854 ret = add_job(td, td->o.name ?: "fio", 0);
b1ec1da6
JA
855 if (ret)
856 put_job(td);
857 }
972cfd25 858 }
774a6177 859
b4692828
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860 while (optind < argc) {
861 ini_idx++;
862 ini_file = realloc(ini_file, ini_idx * sizeof(char *));
863 ini_file[ini_idx - 1] = strdup(argv[optind]);
864 optind++;
eb8bbf48 865 }
972cfd25
JA
866
867 return ini_idx;
ebac4655
JA
868}
869
b4692828 870
ebac4655
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871int parse_options(int argc, char *argv[])
872{
972cfd25
JA
873 int job_files, i;
874
b4692828
JA
875 f_out = stdout;
876 f_err = stderr;
877
214e1eca 878 fio_options_dup_and_init(long_options);
b4692828 879
ebac4655
JA
880 if (setup_thread_area())
881 return 1;
882 if (fill_def_thread())
883 return 1;
884
972cfd25 885 job_files = parse_cmd_line(argc, argv);
ebac4655 886
972cfd25
JA
887 for (i = 0; i < job_files; i++) {
888 if (fill_def_thread())
889 return 1;
0c7e37a0 890 if (parse_jobs_ini(ini_file[i], i))
972cfd25 891 return 1;
88c6ed80 892 free(ini_file[i]);
972cfd25 893 }
ebac4655 894
88c6ed80 895 free(ini_file);
d23bb327 896 options_mem_free(&def_thread);
b4692828
JA
897
898 if (!thread_number) {
cca73aa7
JA
899 if (dump_cmdline)
900 return 0;
901
b4692828 902 log_err("No jobs defined(s)\n");
b4692828
JA
903 return 1;
904 }
905
ebac4655
JA
906 return 0;
907}