Be a little more clever in finding child options
[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
2135abc4 20static char fio_version_string[] = "fio 1.16.9";
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;
33unsigned long long mlock_size = 0;
34FILE *f_out = NULL;
35FILE *f_err = NULL;
ee738499 36
214e1eca
JA
37int write_bw_log = 0;
38
39static int def_timeout = 0;
40static int write_lat_log = 0;
e1f36503 41
214e1eca 42static int prev_group_jobs;
b4692828
JA
43
44/*
45 * Command line options. These will contain the above, plus a few
46 * extra that only pertain to fio itself and not jobs.
47 */
214e1eca 48static struct option long_options[FIO_NR_OPTIONS] = {
b4692828
JA
49 {
50 .name = "output",
51 .has_arg = required_argument,
52 .val = 'o',
53 },
54 {
55 .name = "timeout",
56 .has_arg = required_argument,
57 .val = 't',
58 },
59 {
60 .name = "latency-log",
61 .has_arg = required_argument,
62 .val = 'l',
63 },
64 {
65 .name = "bandwidth-log",
66 .has_arg = required_argument,
67 .val = 'b',
68 },
69 {
70 .name = "minimal",
71 .has_arg = optional_argument,
72 .val = 'm',
73 },
74 {
75 .name = "version",
76 .has_arg = no_argument,
77 .val = 'v',
78 },
fd28ca49
JA
79 {
80 .name = "help",
81 .has_arg = no_argument,
82 .val = 'h',
83 },
84 {
85 .name = "cmdhelp",
320beefe 86 .has_arg = optional_argument,
fd28ca49
JA
87 .val = 'c',
88 },
cca73aa7
JA
89 {
90 .name = "showcmd",
91 .has_arg = no_argument,
92 .val = 's'
93 },
b4692828
JA
94 {
95 .name = NULL,
96 },
97};
98
9728ce37
JB
99FILE *get_f_out()
100{
101 return f_out;
102}
103
104FILE *get_f_err()
105{
106 return f_err;
107}
108
906c8d75
JA
109/*
110 * Return a free job structure.
111 */
ebac4655
JA
112static struct thread_data *get_new_job(int global, struct thread_data *parent)
113{
114 struct thread_data *td;
115
116 if (global)
117 return &def_thread;
118 if (thread_number >= max_jobs)
119 return NULL;
120
121 td = &threads[thread_number++];
ddaeaa5a 122 *td = *parent;
ebac4655 123
cade3ef4 124 dup_files(td, parent);
d23bb327 125 options_mem_dupe(td);
cade3ef4 126
ebac4655 127 td->thread_number = thread_number;
ebac4655
JA
128 return td;
129}
130
131static void put_job(struct thread_data *td)
132{
549577a7
JA
133 if (td == &def_thread)
134 return;
135
16edf25d 136 if (td->error)
6d86144d 137 log_info("fio: %s\n", td->verror);
16edf25d 138
ebac4655
JA
139 memset(&threads[td->thread_number - 1], 0, sizeof(*td));
140 thread_number--;
141}
142
127f6865
JA
143static int setup_rate(struct thread_data *td)
144{
145 unsigned long nr_reads_per_msec;
146 unsigned long long rate;
147 unsigned int bs;
148
2dc1bbeb 149 if (!td->o.rate && !td->o.rate_iops)
127f6865
JA
150 return 0;
151
152 if (td_rw(td))
2dc1bbeb 153 bs = td->o.rw_min_bs;
127f6865 154 else if (td_read(td))
2dc1bbeb 155 bs = td->o.min_bs[DDIR_READ];
127f6865 156 else
2dc1bbeb 157 bs = td->o.min_bs[DDIR_WRITE];
127f6865 158
2dc1bbeb
JA
159 if (td->o.rate) {
160 rate = td->o.rate;
127f6865
JA
161 nr_reads_per_msec = (rate * 1024 * 1000LL) / bs;
162 } else
2dc1bbeb 163 nr_reads_per_msec = td->o.rate_iops * 1000UL;
127f6865
JA
164
165 if (!nr_reads_per_msec) {
166 log_err("rate lower than supported\n");
167 return -1;
168 }
169
170 td->rate_usec_cycle = 1000000000ULL / nr_reads_per_msec;
171 td->rate_pending_usleep = 0;
172 return 0;
173}
174
dad915e3
JA
175/*
176 * Lazy way of fixing up options that depend on each other. We could also
177 * define option callback handlers, but this is easier.
178 */
4e991c23 179static int fixup_options(struct thread_data *td)
e1f36503 180{
2dc1bbeb 181 struct thread_options *o = &td->o;
dad915e3 182
e47f799f
JA
183 if (o->rwmix[DDIR_READ] + o->rwmix[DDIR_WRITE] > 100)
184 o->rwmix[DDIR_WRITE] = 100 - o->rwmix[DDIR_READ];
2dc1bbeb
JA
185
186 if (o->write_iolog_file && o->read_iolog_file) {
076efc7c 187 log_err("fio: read iolog overrides write_iolog\n");
2dc1bbeb
JA
188 free(o->write_iolog_file);
189 o->write_iolog_file = NULL;
076efc7c 190 }
16b462ae
JA
191
192 if (td->io_ops->flags & FIO_SYNCIO)
2dc1bbeb 193 o->iodepth = 1;
16b462ae 194 else {
2dc1bbeb
JA
195 if (!o->iodepth)
196 o->iodepth = o->open_files;
16b462ae
JA
197 }
198
199 /*
200 * only really works for sequential io for now, and with 1 file
201 */
2dc1bbeb
JA
202 if (o->zone_size && td_random(td) && o->open_files == 1)
203 o->zone_size = 0;
16b462ae
JA
204
205 /*
206 * Reads can do overwrites, we always need to pre-create the file
207 */
208 if (td_read(td) || td_rw(td))
2dc1bbeb 209 o->overwrite = 1;
16b462ae 210
2dc1bbeb
JA
211 if (!o->min_bs[DDIR_READ])
212 o->min_bs[DDIR_READ]= o->bs[DDIR_READ];
213 if (!o->max_bs[DDIR_READ])
214 o->max_bs[DDIR_READ] = o->bs[DDIR_READ];
215 if (!o->min_bs[DDIR_WRITE])
216 o->min_bs[DDIR_WRITE]= o->bs[DDIR_WRITE];
217 if (!o->max_bs[DDIR_WRITE])
218 o->max_bs[DDIR_WRITE] = o->bs[DDIR_WRITE];
a00735e6 219
2dc1bbeb 220 o->rw_min_bs = min(o->min_bs[DDIR_READ], o->min_bs[DDIR_WRITE]);
a00735e6 221
2dc1bbeb
JA
222 if (!o->file_size_high)
223 o->file_size_high = o->file_size_low;
9c60ce64 224
2dc1bbeb 225 if (o->norandommap && o->verify != VERIFY_NONE) {
bb8895e0 226 log_err("fio: norandommap given, verify disabled\n");
2dc1bbeb 227 o->verify = VERIFY_NONE;
bb8895e0 228 }
2dc1bbeb 229 if (o->bs_unaligned && (o->odirect || td->io_ops->flags & FIO_RAWIO))
690adba3 230 log_err("fio: bs_unaligned may not work with raw io\n");
e0a22335 231
48097d5c
JA
232 /*
233 * thinktime_spin must be less than thinktime
234 */
2dc1bbeb
JA
235 if (o->thinktime_spin > o->thinktime)
236 o->thinktime_spin = o->thinktime;
e916b390
JA
237
238 /*
239 * The low water mark cannot be bigger than the iodepth
240 */
2dc1bbeb 241 if (o->iodepth_low > o->iodepth || !o->iodepth_low) {
9467b77c
JA
242 /*
243 * syslet work around - if the workload is sequential,
244 * we want to let the queue drain all the way down to
245 * avoid seeking between async threads
246 */
247 if (!strcmp(td->io_ops->name, "syslet-rw") && !td_random(td))
2dc1bbeb 248 o->iodepth_low = 1;
9467b77c 249 else
2dc1bbeb 250 o->iodepth_low = o->iodepth;
9467b77c 251 }
cb5ab512
JA
252
253 /*
254 * If batch number isn't set, default to the same as iodepth
255 */
2dc1bbeb
JA
256 if (o->iodepth_batch > o->iodepth || !o->iodepth_batch)
257 o->iodepth_batch = o->iodepth;
b5af8293 258
2dc1bbeb
JA
259 if (o->nr_files > td->files_index)
260 o->nr_files = td->files_index;
9f9214f2 261
2dc1bbeb
JA
262 if (o->open_files > o->nr_files || !o->open_files)
263 o->open_files = o->nr_files;
4e991c23 264
2dc1bbeb 265 if ((o->rate && o->rate_iops) || (o->ratemin && o->rate_iops_min)) {
4e991c23
JA
266 log_err("fio: rate and rate_iops are mutually exclusive\n");
267 return 1;
268 }
2dc1bbeb 269 if ((o->rate < o->ratemin) || (o->rate_iops < o->rate_iops_min)) {
4e991c23
JA
270 log_err("fio: minimum rate exceeds rate\n");
271 return 1;
272 }
273
cf4464ca
JA
274 if (!o->timeout && o->time_based) {
275 log_err("fio: time_based requires a runtime/timeout setting\n");
276 o->time_based = 0;
277 }
278
4e991c23 279 return 0;
e1f36503
JA
280}
281
f8977ee6
JA
282/*
283 * This function leaks the buffer
284 */
285static char *to_kmg(unsigned int val)
286{
287 char *buf = malloc(32);
f3502ba2 288 char post[] = { 0, 'K', 'M', 'G', 'P', 'E', 0 };
f8977ee6
JA
289 char *p = post;
290
245142ff 291 do {
f8977ee6
JA
292 if (val & 1023)
293 break;
294
295 val >>= 10;
296 p++;
245142ff 297 } while (*p);
f8977ee6
JA
298
299 snprintf(buf, 31, "%u%c", val, *p);
300 return buf;
301}
302
09629a90
JA
303/* External engines are specified by "external:name.o") */
304static const char *get_engine_name(const char *str)
305{
306 char *p = strstr(str, ":");
307
308 if (!p)
309 return str;
310
311 p++;
312 strip_blank_front(&p);
313 strip_blank_end(p);
314 return p;
315}
316
e132cbae
JA
317static int exists_and_not_file(const char *filename)
318{
319 struct stat sb;
320
321 if (lstat(filename, &sb) == -1)
322 return 0;
323
324 if (S_ISREG(sb.st_mode))
325 return 0;
326
327 return 1;
328}
329
9c60ce64
JA
330/*
331 * Initialize the various random states we need (random io, block size ranges,
332 * read/write mix, etc).
333 */
334static int init_random_state(struct thread_data *td)
335{
336 unsigned long seeds[6];
68727076 337 int fd;
9c60ce64
JA
338
339 fd = open("/dev/urandom", O_RDONLY);
340 if (fd == -1) {
341 td_verror(td, errno, "open");
342 return 1;
343 }
344
345 if (read(fd, seeds, sizeof(seeds)) < (int) sizeof(seeds)) {
346 td_verror(td, EIO, "read");
347 close(fd);
348 return 1;
349 }
350
351 close(fd);
352
353 os_random_seed(seeds[0], &td->bsrange_state);
354 os_random_seed(seeds[1], &td->verify_state);
355 os_random_seed(seeds[2], &td->rwmix_state);
356
2dc1bbeb 357 if (td->o.file_service_type == FIO_FSERVICE_RANDOM)
9c60ce64
JA
358 os_random_seed(seeds[3], &td->next_file_state);
359
360 os_random_seed(seeds[5], &td->file_size_state);
361
362 if (!td_random(td))
363 return 0;
364
2dc1bbeb 365 if (td->o.rand_repeatable)
9c60ce64
JA
366 seeds[4] = FIO_RANDSEED * td->thread_number;
367
9c60ce64
JA
368 os_random_seed(seeds[4], &td->random_state);
369 return 0;
370}
371
906c8d75
JA
372/*
373 * Adds a job to the list of things todo. Sanitizes the various options
374 * to make sure we don't have conflicts, and initializes various
375 * members of td.
376 */
75154845 377static int add_job(struct thread_data *td, const char *jobname, int job_add_num)
ebac4655 378{
413dd459
JA
379 const char *ddir_str[] = { NULL, "read", "write", "rw", NULL,
380 "randread", "randwrite", "randrw" };
af52b345 381 unsigned int i;
09629a90 382 const char *engine;
af52b345 383 char fname[PATH_MAX];
e132cbae 384 int numjobs, file_alloced;
ebac4655 385
ebac4655
JA
386 /*
387 * the def_thread is just for options, it's not a real job
388 */
389 if (td == &def_thread)
390 return 0;
391
cca73aa7
JA
392 /*
393 * if we are just dumping the output command line, don't add the job
394 */
395 if (dump_cmdline) {
396 put_job(td);
397 return 0;
398 }
399
2dc1bbeb 400 engine = get_engine_name(td->o.ioengine);
09629a90
JA
401 td->io_ops = load_ioengine(td, engine);
402 if (!td->io_ops) {
403 log_err("fio: failed to load engine %s\n", engine);
205927a3 404 goto err;
09629a90 405 }
df64119d 406
2dc1bbeb 407 if (td->o.use_thread)
9cedf167
JA
408 nr_thread++;
409 else
410 nr_process++;
411
2dc1bbeb 412 if (td->o.odirect)
690adba3
JA
413 td->io_ops->flags |= FIO_RAWIO;
414
e132cbae 415 file_alloced = 0;
2dc1bbeb 416 if (!td->o.filename && !td->files_index) {
e132cbae 417 file_alloced = 1;
80be24f4 418
2dc1bbeb 419 if (td->o.nr_files == 1 && exists_and_not_file(jobname))
e132cbae 420 add_file(td, jobname);
7b05a215 421 else {
2dc1bbeb 422 for (i = 0; i < td->o.nr_files; i++) {
e132cbae 423 sprintf(fname, "%s.%d.%d", jobname, td->thread_number, i);
7b05a215
JA
424 add_file(td, fname);
425 }
af52b345 426 }
0af7b542 427 }
ebac4655 428
4e991c23
JA
429 if (fixup_options(td))
430 goto err;
e0a22335 431
07eb79df
JA
432 if (td->io_ops->flags & FIO_DISKLESSIO) {
433 struct fio_file *f;
434
435 for_each_file(td, f, i)
436 f->real_file_size = -1ULL;
437 }
438
07739b57 439 td->mutex = fio_sem_init(0);
ebac4655 440
756867bd
JA
441 td->ts.clat_stat[0].min_val = td->ts.clat_stat[1].min_val = ULONG_MAX;
442 td->ts.slat_stat[0].min_val = td->ts.slat_stat[1].min_val = ULONG_MAX;
443 td->ts.bw_stat[0].min_val = td->ts.bw_stat[1].min_val = ULONG_MAX;
1e3d53ac 444 td->ddir_nr = td->o.ddir_nr;
ebac4655 445
b3d62a75
JA
446 if ((td->o.stonewall || td->o.numjobs > 1 || td->o.new_group)
447 && prev_group_jobs) {
3c5df6fa 448 prev_group_jobs = 0;
ebac4655 449 groupid++;
3c5df6fa 450 }
ebac4655
JA
451
452 td->groupid = groupid;
3c5df6fa 453 prev_group_jobs++;
ebac4655 454
9c60ce64
JA
455 if (init_random_state(td))
456 goto err;
457
ebac4655
JA
458 if (setup_rate(td))
459 goto err;
460
2dc1bbeb 461 if (td->o.write_lat_log) {
756867bd
JA
462 setup_log(&td->ts.slat_log);
463 setup_log(&td->ts.clat_log);
ebac4655 464 }
2dc1bbeb 465 if (td->o.write_bw_log)
756867bd 466 setup_log(&td->ts.bw_log);
ebac4655 467
2dc1bbeb
JA
468 if (!td->o.name)
469 td->o.name = strdup(jobname);
01452055 470
c6ae0a5b 471 if (!terse_output) {
b990b5c0 472 if (!job_add_num) {
ba0fbe10 473 if (!strcmp(td->io_ops->name, "cpuio"))
2dc1bbeb 474 log_info("%s: ioengine=cpu, cpuload=%u, cpucycle=%u\n", td->o.name, td->o.cpuload, td->o.cpucycle);
f8977ee6
JA
475 else {
476 char *c1, *c2, *c3, *c4;
477
2dc1bbeb
JA
478 c1 = to_kmg(td->o.min_bs[DDIR_READ]);
479 c2 = to_kmg(td->o.max_bs[DDIR_READ]);
480 c3 = to_kmg(td->o.min_bs[DDIR_WRITE]);
481 c4 = to_kmg(td->o.max_bs[DDIR_WRITE]);
f8977ee6 482
2dc1bbeb 483 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
484
485 free(c1);
486 free(c2);
487 free(c3);
488 free(c4);
489 }
b990b5c0 490 } else if (job_add_num == 1)
6d86144d 491 log_info("...\n");
c6ae0a5b 492 }
ebac4655
JA
493
494 /*
495 * recurse add identical jobs, clear numjobs and stonewall options
496 * as they don't apply to sub-jobs
497 */
2dc1bbeb 498 numjobs = td->o.numjobs;
ebac4655
JA
499 while (--numjobs) {
500 struct thread_data *td_new = get_new_job(0, td);
501
502 if (!td_new)
503 goto err;
504
2dc1bbeb
JA
505 td_new->o.numjobs = 1;
506 td_new->o.stonewall = 0;
92c1d41f 507 td_new->o.new_group = 0;
e132cbae
JA
508
509 if (file_alloced) {
2dc1bbeb 510 td_new->o.filename = NULL;
e132cbae
JA
511 td_new->files_index = 0;
512 td_new->files = NULL;
513 }
514
75154845 515 job_add_num = numjobs - 1;
ebac4655 516
75154845 517 if (add_job(td_new, jobname, job_add_num))
ebac4655
JA
518 goto err;
519 }
3c5df6fa 520
ebac4655
JA
521 return 0;
522err:
523 put_job(td);
524 return -1;
525}
526
ebac4655
JA
527static int is_empty_or_comment(char *line)
528{
529 unsigned int i;
530
531 for (i = 0; i < strlen(line); i++) {
532 if (line[i] == ';')
533 return 1;
5cc2da30
IM
534 if (line[i] == '#')
535 return 1;
ebac4655
JA
536 if (!isspace(line[i]) && !iscntrl(line[i]))
537 return 0;
538 }
539
540 return 1;
541}
542
07261983
JA
543/*
544 * This is our [ini] type file parser.
545 */
1e97cce9 546static int parse_jobs_ini(char *file, int stonewall_flag)
ebac4655 547{
e1f36503 548 unsigned int global;
ebac4655 549 struct thread_data *td;
fee3bb48 550 char *string, *name;
ebac4655
JA
551 fpos_t off;
552 FILE *f;
553 char *p;
0c7e37a0 554 int ret = 0, stonewall;
097b2991 555 int first_sect = 1;
ebac4655
JA
556
557 f = fopen(file, "r");
558 if (!f) {
aea47d44 559 perror("fopen job file");
ebac4655
JA
560 return 1;
561 }
562
563 string = malloc(4096);
7f7e6e59
JA
564
565 /*
566 * it's really 256 + small bit, 280 should suffice
567 */
568 name = malloc(280);
569 memset(name, 0, 280);
ebac4655 570
0c7e37a0 571 stonewall = stonewall_flag;
7c124ac1
JA
572 do {
573 p = fgets(string, 4095, f);
574 if (!p)
45410acb 575 break;
cdc7f193 576
577 strip_blank_front(&p);
6c7c7da1 578 strip_blank_end(p);
cdc7f193 579
ebac4655
JA
580 if (is_empty_or_comment(p))
581 continue;
6c7c7da1 582 if (sscanf(p, "[%255s]", name) != 1) {
088b4207
JA
583 log_err("fio: option <%s> outside of [] job section\n", p);
584 break;
6c7c7da1 585 }
ebac4655
JA
586
587 global = !strncmp(name, "global", 6);
588
589 name[strlen(name) - 1] = '\0';
590
cca73aa7 591 if (dump_cmdline) {
097b2991
JA
592 if (first_sect)
593 log_info("fio ");
cca73aa7
JA
594 if (!global)
595 log_info("--name=%s ", name);
097b2991 596 first_sect = 0;
cca73aa7
JA
597 }
598
ebac4655 599 td = get_new_job(global, &def_thread);
45410acb
JA
600 if (!td) {
601 ret = 1;
602 break;
603 }
ebac4655 604
972cfd25
JA
605 /*
606 * Seperate multiple job files by a stonewall
607 */
f9481919 608 if (!global && stonewall) {
2dc1bbeb 609 td->o.stonewall = stonewall;
972cfd25
JA
610 stonewall = 0;
611 }
612
ebac4655
JA
613 fgetpos(f, &off);
614 while ((p = fgets(string, 4096, f)) != NULL) {
615 if (is_empty_or_comment(p))
616 continue;
e1f36503 617
b6754f9d 618 strip_blank_front(&p);
7c124ac1
JA
619
620 if (p[0] == '[')
621 break;
622
4ae3f763 623 strip_blank_end(p);
aea47d44 624
e1f36503 625 fgetpos(f, &off);
ebac4655 626
45410acb
JA
627 /*
628 * Don't break here, continue parsing options so we
629 * dump all the bad ones. Makes trial/error fixups
630 * easier on the user.
631 */
214e1eca 632 ret |= fio_option_parse(td, p);
cca73aa7
JA
633 if (!ret && dump_cmdline)
634 log_info("--%s ", p);
ebac4655 635 }
ebac4655 636
45410acb
JA
637 if (!ret) {
638 fsetpos(f, &off);
639 ret = add_job(td, name, 0);
b1508cf9
JA
640 } else {
641 log_err("fio: job %s dropped\n", name);
642 put_job(td);
45410acb 643 }
7c124ac1 644 } while (!ret);
ebac4655 645
cca73aa7
JA
646 if (dump_cmdline)
647 log_info("\n");
648
ebac4655
JA
649 free(string);
650 free(name);
651 fclose(f);
45410acb 652 return ret;
ebac4655
JA
653}
654
655static int fill_def_thread(void)
656{
657 memset(&def_thread, 0, sizeof(def_thread));
658
375b2695 659 fio_getaffinity(getpid(), &def_thread.o.cpumask);
ebac4655
JA
660
661 /*
ee738499 662 * fill default options
ebac4655 663 */
214e1eca 664 fio_fill_default_options(&def_thread);
ee738499 665
2dc1bbeb
JA
666 def_thread.o.timeout = def_timeout;
667 def_thread.o.write_bw_log = write_bw_log;
668 def_thread.o.write_lat_log = write_lat_log;
ee738499 669
ebac4655
JA
670 return 0;
671}
672
214e1eca
JA
673static void free_shm(void)
674{
675 struct shmid_ds sbuf;
676
677 if (threads) {
678 shmdt((void *) threads);
679 threads = NULL;
680 shmctl(shm_id, IPC_RMID, &sbuf);
681 }
682}
683
684/*
685 * The thread area is shared between the main process and the job
686 * threads/processes. So setup a shared memory segment that will hold
687 * all the job info.
688 */
689static int setup_thread_area(void)
690{
691 /*
692 * 1024 is too much on some machines, scale max_jobs if
693 * we get a failure that looks like too large a shm segment
694 */
695 do {
696 size_t size = max_jobs * sizeof(struct thread_data);
697
698 shm_id = shmget(0, size, IPC_CREAT | 0600);
699 if (shm_id != -1)
700 break;
701 if (errno != EINVAL) {
702 perror("shmget");
703 break;
704 }
705
706 max_jobs >>= 1;
707 } while (max_jobs);
708
709 if (shm_id == -1)
710 return 1;
711
712 threads = shmat(shm_id, NULL, 0);
713 if (threads == (void *) -1) {
714 perror("shmat");
715 return 1;
716 }
717
718 atexit(free_shm);
719 return 0;
720}
721
0ab8db89 722static void usage(void)
4785f995
JA
723{
724 printf("%s\n", fio_version_string);
b4692828
JA
725 printf("\t--output\tWrite output to file\n");
726 printf("\t--timeout\tRuntime in seconds\n");
727 printf("\t--latency-log\tGenerate per-job latency logs\n");
728 printf("\t--bandwidth-log\tGenerate per-job bandwidth logs\n");
729 printf("\t--minimal\tMinimal (terse) output\n");
730 printf("\t--version\tPrint version info and exit\n");
fd28ca49
JA
731 printf("\t--help\t\tPrint this page\n");
732 printf("\t--cmdhelp=cmd\tPrint command help, \"all\" for all of them\n");
cca73aa7 733 printf("\t--showcmd\tTurn a job file into command line options\n");
4785f995
JA
734}
735
972cfd25 736static int parse_cmd_line(int argc, char *argv[])
ebac4655 737{
b4692828 738 struct thread_data *td = NULL;
b1ec1da6 739 int c, ini_idx = 0, lidx, ret, dont_add_job = 0;
ebac4655 740
0be06ea2 741 while ((c = getopt_long_only(argc, argv, "", long_options, &lidx)) != -1) {
ebac4655 742 switch (c) {
b4692828
JA
743 case 't':
744 def_timeout = atoi(optarg);
745 break;
746 case 'l':
747 write_lat_log = 1;
748 break;
749 case 'w':
750 write_bw_log = 1;
751 break;
752 case 'o':
753 f_out = fopen(optarg, "w+");
754 if (!f_out) {
755 perror("fopen output");
756 exit(1);
757 }
758 f_err = f_out;
759 break;
760 case 'm':
761 terse_output = 1;
762 break;
763 case 'h':
764 usage();
765 exit(0);
fd28ca49 766 case 'c':
214e1eca 767 exit(fio_show_option_help(optarg));
cca73aa7
JA
768 case 's':
769 dump_cmdline = 1;
770 break;
b4692828
JA
771 case 'v':
772 printf("%s\n", fio_version_string);
773 exit(0);
774 case FIO_GETOPT_JOB: {
775 const char *opt = long_options[lidx].name;
776 char *val = optarg;
777
c2b1e753 778 if (!strncmp(opt, "name", 4) && td) {
2dc1bbeb 779 ret = add_job(td, td->o.name ?: "fio", 0);
c2b1e753
JA
780 if (ret) {
781 put_job(td);
782 return 0;
783 }
784 td = NULL;
785 }
b4692828 786 if (!td) {
3106f220
JA
787 int global = 0;
788
789 if (strncmp(opt, "name", 4) ||
790 !strncmp(val, "global", 6))
791 global = 1;
c2b1e753
JA
792
793 td = get_new_job(global, &def_thread);
b4692828
JA
794 if (!td)
795 return 0;
796 }
38d0adb0 797
214e1eca 798 ret = fio_cmd_option_parse(td, opt, val);
78217dfa 799 if (ret)
b1ec1da6 800 dont_add_job = 1;
b4692828
JA
801 break;
802 }
803 default:
b4692828 804 break;
ebac4655
JA
805 }
806 }
c9fad893 807
b4692828 808 if (td) {
b1ec1da6 809 if (dont_add_job)
b4692828 810 put_job(td);
b1ec1da6 811 else {
2dc1bbeb 812 ret = add_job(td, td->o.name ?: "fio", 0);
b1ec1da6
JA
813 if (ret)
814 put_job(td);
815 }
972cfd25 816 }
774a6177 817
b4692828
JA
818 while (optind < argc) {
819 ini_idx++;
820 ini_file = realloc(ini_file, ini_idx * sizeof(char *));
821 ini_file[ini_idx - 1] = strdup(argv[optind]);
822 optind++;
eb8bbf48 823 }
972cfd25
JA
824
825 return ini_idx;
ebac4655
JA
826}
827
b4692828 828
ebac4655
JA
829int parse_options(int argc, char *argv[])
830{
972cfd25
JA
831 int job_files, i;
832
b4692828
JA
833 f_out = stdout;
834 f_err = stderr;
835
214e1eca 836 fio_options_dup_and_init(long_options);
b4692828 837
ebac4655
JA
838 if (setup_thread_area())
839 return 1;
840 if (fill_def_thread())
841 return 1;
842
972cfd25 843 job_files = parse_cmd_line(argc, argv);
ebac4655 844
972cfd25
JA
845 for (i = 0; i < job_files; i++) {
846 if (fill_def_thread())
847 return 1;
0c7e37a0 848 if (parse_jobs_ini(ini_file[i], i))
972cfd25 849 return 1;
88c6ed80 850 free(ini_file[i]);
972cfd25 851 }
ebac4655 852
88c6ed80 853 free(ini_file);
d23bb327 854 options_mem_free(&def_thread);
b4692828
JA
855
856 if (!thread_number) {
cca73aa7
JA
857 if (dump_cmdline)
858 return 0;
859
b4692828 860 log_err("No jobs defined(s)\n");
b4692828
JA
861 return 1;
862 }
863
ebac4655
JA
864 return 0;
865}