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[PATCH] Add 'norandommap' option
[fio.git] / init.c
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1/*
2 * This file contains job initialization and setup functions.
3 */
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 <getopt.h>
12#include <assert.h>
13#include <sys/ipc.h>
14#include <sys/shm.h>
15#include <sys/types.h>
16#include <sys/stat.h>
17
18#include "fio.h"
19#include "parse.h"
20
21/*
22 * The default options
23 */
24#define DEF_BS (4096)
25#define DEF_TIMEOUT (0)
26#define DEF_RATE_CYCLE (1000)
27#define DEF_ODIRECT (1)
28#define DEF_IO_ENGINE (FIO_SYNCIO)
29#define DEF_IO_ENGINE_NAME "sync"
30#define DEF_SEQUENTIAL (1)
31#define DEF_RAND_REPEAT (1)
32#define DEF_OVERWRITE (1)
33#define DEF_INVALIDATE (1)
34#define DEF_SYNCIO (0)
35#define DEF_RANDSEED (0xb1899bedUL)
36#define DEF_BWAVGTIME (500)
37#define DEF_CREATE_SER (1)
38#define DEF_CREATE_FSYNC (1)
39#define DEF_LOOPS (1)
40#define DEF_VERIFY (0)
41#define DEF_STONEWALL (0)
42#define DEF_NUMJOBS (1)
43#define DEF_USE_THREAD (0)
44#define DEF_FILE_SIZE (1024 * 1024 * 1024UL)
45#define DEF_ZONE_SIZE (0)
46#define DEF_ZONE_SKIP (0)
47#define DEF_RWMIX_CYCLE (500)
48#define DEF_RWMIX_READ (50)
49#define DEF_NICE (0)
50#define DEF_NR_FILES (1)
51#define DEF_UNLINK (0)
52#define DEF_WRITE_BW_LOG (0)
53#define DEF_WRITE_LAT_LOG (0)
54#define DEF_NO_RAND_MAP (0)
55
56#define td_var_offset(var) ((size_t) &((struct thread_data *)0)->var)
57
58static int str_rw_cb(void *, const char *);
59static int str_ioengine_cb(void *, const char *);
60static int str_mem_cb(void *, const char *);
61static int str_verify_cb(void *, const char *);
62static int str_lockmem_cb(void *, unsigned long *);
63static int str_prio_cb(void *, unsigned int *);
64static int str_prioclass_cb(void *, unsigned int *);
65static int str_exitall_cb(void);
66static int str_cpumask_cb(void *, unsigned int *);
67
68/*
69 * Map of job/command line options
70 */
71static struct fio_option options[] = {
72 {
73 .name = "name",
74 .type = FIO_OPT_STR_STORE,
75 .off1 = td_var_offset(name),
76 },
77 {
78 .name = "directory",
79 .type = FIO_OPT_STR_STORE,
80 .off1 = td_var_offset(directory),
81 },
82 {
83 .name = "filename",
84 .type = FIO_OPT_STR_STORE,
85 .off1 = td_var_offset(filename),
86 },
87 {
88 .name = "rw",
89 .type = FIO_OPT_STR,
90 .cb = str_rw_cb,
91 },
92 {
93 .name = "ioengine",
94 .type = FIO_OPT_STR,
95 .cb = str_ioengine_cb,
96 },
97 {
98 .name = "mem",
99 .type = FIO_OPT_STR,
100 .cb = str_mem_cb,
101 },
102 {
103 .name = "verify",
104 .type = FIO_OPT_STR,
105 .cb = str_verify_cb,
106 },
107 {
108 .name = "write_iolog",
109 .type = FIO_OPT_STR_STORE,
110 .off1 = td_var_offset(write_iolog_file),
111 },
112 {
113 .name = "read_iolog",
114 .type = FIO_OPT_STR_STORE,
115 .off1 = td_var_offset(read_iolog_file),
116 },
117 {
118 .name = "exec_prerun",
119 .type = FIO_OPT_STR_STORE,
120 .off1 = td_var_offset(exec_prerun),
121 },
122 {
123 .name = "exec_postrun",
124 .type = FIO_OPT_STR_STORE,
125 .off1 = td_var_offset(exec_postrun),
126 },
127#ifdef FIO_HAVE_IOSCHED_SWITCH
128 {
129 .name = "ioscheduler",
130 .type = FIO_OPT_STR_STORE,
131 .off1 = td_var_offset(ioscheduler),
132 },
133#endif
134 {
135 .name = "size",
136 .type = FIO_OPT_STR_VAL,
137 .off1 = td_var_offset(total_file_size),
138 },
139 {
140 .name = "bs",
141 .type = FIO_OPT_STR_VAL,
142 .off1 = td_var_offset(bs),
143 },
144 {
145 .name = "offset",
146 .type = FIO_OPT_STR_VAL,
147 .off1 = td_var_offset(start_offset),
148 },
149 {
150 .name = "zonesize",
151 .type = FIO_OPT_STR_VAL,
152 .off1 = td_var_offset(zone_size),
153 },
154 {
155 .name = "zoneskip",
156 .type = FIO_OPT_STR_VAL,
157 .off1 = td_var_offset(zone_skip),
158 },
159 {
160 .name = "lockmem",
161 .type = FIO_OPT_STR_VAL,
162 .cb = str_lockmem_cb,
163 },
164 {
165 .name = "bsrange",
166 .type = FIO_OPT_RANGE,
167 .off1 = td_var_offset(min_bs),
168 .off2 = td_var_offset(max_bs),
169 },
170 {
171 .name = "nrfiles",
172 .type = FIO_OPT_INT,
173 .off1 = td_var_offset(nr_files),
174 },
175 {
176 .name = "iodepth",
177 .type = FIO_OPT_INT,
178 .off1 = td_var_offset(iodepth),
179 },
180 {
181 .name = "fsync",
182 .type = FIO_OPT_INT,
183 .off1 = td_var_offset(fsync_blocks),
184 },
185 {
186 .name = "rwmixcycle",
187 .type = FIO_OPT_INT,
188 .off1 = td_var_offset(rwmixcycle),
189 },
190 {
191 .name = "rwmixread",
192 .type = FIO_OPT_INT,
193 .off1 = td_var_offset(rwmixread),
194 .max_val= 100,
195 },
196 {
197 .name = "rwmixwrite",
198 .type = FIO_OPT_INT,
199 .off1 = td_var_offset(rwmixwrite),
200 .max_val= 100,
201 },
202 {
203 .name = "nice",
204 .type = FIO_OPT_INT,
205 .off1 = td_var_offset(nice),
206 },
207#ifdef FIO_HAVE_IOPRIO
208 {
209 .name = "prio",
210 .type = FIO_OPT_INT,
211 .cb = str_prio_cb,
212 },
213 {
214 .name = "prioclass",
215 .type = FIO_OPT_INT,
216 .cb = str_prioclass_cb,
217 },
218#endif
219 {
220 .name = "thinktime",
221 .type = FIO_OPT_INT,
222 .off1 = td_var_offset(thinktime)
223 },
224 {
225 .name = "rate",
226 .type = FIO_OPT_INT,
227 .off1 = td_var_offset(rate)
228 },
229 {
230 .name = "ratemin",
231 .type = FIO_OPT_INT,
232 .off1 = td_var_offset(ratemin)
233 },
234 {
235 .name = "ratecycle",
236 .type = FIO_OPT_INT,
237 .off1 = td_var_offset(ratecycle)
238 },
239 {
240 .name = "startdelay",
241 .type = FIO_OPT_INT,
242 .off1 = td_var_offset(start_delay)
243 },
244 {
245 .name = "timeout",
246 .type = FIO_OPT_STR_VAL_TIME,
247 .off1 = td_var_offset(timeout)
248 },
249 {
250 .name = "invalidate",
251 .type = FIO_OPT_INT,
252 .off1 = td_var_offset(invalidate_cache)
253 },
254 {
255 .name = "sync",
256 .type = FIO_OPT_INT,
257 .off1 = td_var_offset(sync_io)
258 },
259 {
260 .name = "bwavgtime",
261 .type = FIO_OPT_INT,
262 .off1 = td_var_offset(bw_avg_time)
263 },
264 {
265 .name = "create_serialize",
266 .type = FIO_OPT_INT,
267 .off1 = td_var_offset(create_serialize)
268 },
269 {
270 .name = "create_fsync",
271 .type = FIO_OPT_INT,
272 .off1 = td_var_offset(create_fsync)
273 },
274 {
275 .name = "loops",
276 .type = FIO_OPT_INT,
277 .off1 = td_var_offset(loops)
278 },
279 {
280 .name = "numjobs",
281 .type = FIO_OPT_INT,
282 .off1 = td_var_offset(numjobs)
283 },
284 {
285 .name = "cpuload",
286 .type = FIO_OPT_INT,
287 .off1 = td_var_offset(cpuload)
288 },
289 {
290 .name = "cpuchunks",
291 .type = FIO_OPT_INT,
292 .off1 = td_var_offset(cpucycle)
293 },
294 {
295 .name = "direct",
296 .type = FIO_OPT_INT,
297 .off1 = td_var_offset(odirect)
298 },
299 {
300 .name = "overwrite",
301 .type = FIO_OPT_INT,
302 .off1 = td_var_offset(overwrite)
303 },
304#ifdef FIO_HAVE_CPU_AFFINITY
305 {
306 .name = "cpumask",
307 .type = FIO_OPT_INT,
308 .cb = str_cpumask_cb,
309 },
310#endif
311 {
312 .name = "end_fsync",
313 .type = FIO_OPT_INT,
314 .off1 = td_var_offset(end_fsync)
315 },
316 {
317 .name = "unlink",
318 .type = FIO_OPT_STR_SET,
319 .off1 = td_var_offset(unlink),
320 },
321 {
322 .name = "exitall",
323 .type = FIO_OPT_STR_SET,
324 .cb = str_exitall_cb,
325 },
326 {
327 .name = "stonewall",
328 .type = FIO_OPT_STR_SET,
329 .off1 = td_var_offset(stonewall),
330 },
331 {
332 .name = "thread",
333 .type = FIO_OPT_STR_SET,
334 .off1 = td_var_offset(thread),
335 },
336 {
337 .name = "write_bw_log",
338 .type = FIO_OPT_STR_SET,
339 .off1 = td_var_offset(write_bw_log),
340 },
341 {
342 .name = "write_lat_log",
343 .type = FIO_OPT_STR_SET,
344 .off1 = td_var_offset(write_lat_log),
345 },
346 {
347 .name = "norandommap",
348 .type = FIO_OPT_STR_SET,
349 .off1 = td_var_offset(norandommap),
350 },
351 {
352 .name = NULL,
353 },
354};
355
356#define FIO_JOB_OPTS (sizeof(options) / sizeof(struct fio_option))
357#define FIO_CMD_OPTS (16)
358#define FIO_GETOPT_JOB (0x89988998)
359
360/*
361 * Command line options. These will contain the above, plus a few
362 * extra that only pertain to fio itself and not jobs.
363 */
364static struct option long_options[FIO_JOB_OPTS + FIO_CMD_OPTS] = {
365 {
366 .name = "output",
367 .has_arg = required_argument,
368 .val = 'o',
369 },
370 {
371 .name = "timeout",
372 .has_arg = required_argument,
373 .val = 't',
374 },
375 {
376 .name = "latency-log",
377 .has_arg = required_argument,
378 .val = 'l',
379 },
380 {
381 .name = "bandwidth-log",
382 .has_arg = required_argument,
383 .val = 'b',
384 },
385 {
386 .name = "minimal",
387 .has_arg = optional_argument,
388 .val = 'm',
389 },
390 {
391 .name = "version",
392 .has_arg = no_argument,
393 .val = 'v',
394 },
395 {
396 .name = NULL,
397 },
398};
399
400static int def_timeout = DEF_TIMEOUT;
401
402static char fio_version_string[] = "fio 1.7";
403
404static char **ini_file;
405static int max_jobs = MAX_JOBS;
406
407struct thread_data def_thread;
408struct thread_data *threads = NULL;
409
410int rate_quit = 0;
411int exitall_on_terminate = 0;
412int terse_output = 0;
413unsigned long long mlock_size = 0;
414FILE *f_out = NULL;
415FILE *f_err = NULL;
416
417static int write_lat_log = DEF_WRITE_LAT_LOG;
418static int write_bw_log = DEF_WRITE_BW_LOG;
419
420/*
421 * Return a free job structure.
422 */
423static struct thread_data *get_new_job(int global, struct thread_data *parent)
424{
425 struct thread_data *td;
426
427 if (global)
428 return &def_thread;
429 if (thread_number >= max_jobs)
430 return NULL;
431
432 td = &threads[thread_number++];
433 *td = *parent;
434
435 td->thread_number = thread_number;
436 return td;
437}
438
439static void put_job(struct thread_data *td)
440{
441 if (td == &def_thread)
442 return;
443
444 memset(&threads[td->thread_number - 1], 0, sizeof(*td));
445 thread_number--;
446}
447
448/*
449 * Lazy way of fixing up options that depend on each other. We could also
450 * define option callback handlers, but this is easier.
451 */
452static void fixup_options(struct thread_data *td)
453{
454 if (!td->rwmixread && td->rwmixwrite)
455 td->rwmixread = 100 - td->rwmixwrite;
456
457 if (td->write_iolog_file && td->read_iolog_file) {
458 log_err("fio: read iolog overrides write_iolog\n");
459 free(td->write_iolog_file);
460 td->write_iolog_file = NULL;
461 }
462
463 if (td->io_ops->flags & FIO_SYNCIO)
464 td->iodepth = 1;
465 else {
466 if (!td->iodepth)
467 td->iodepth = td->nr_files;
468 }
469
470 /*
471 * only really works for sequential io for now, and with 1 file
472 */
473 if (td->zone_size && !td->sequential && td->nr_files == 1)
474 td->zone_size = 0;
475
476 /*
477 * Reads can do overwrites, we always need to pre-create the file
478 */
479 if (td_read(td) || td_rw(td))
480 td->overwrite = 1;
481
482 if (!td->min_bs)
483 td->min_bs = td->bs;
484 if (!td->max_bs)
485 td->max_bs = td->bs;
486 if (td_read(td) && !td_rw(td))
487 td->verify = 0;
488
489 if (td->norandommap && td->verify != VERIFY_NONE) {
490 log_err("fio: norandommap given, verify disabled\n");
491 td->verify = VERIFY_NONE;
492 }
493}
494
495/*
496 * Adds a job to the list of things todo. Sanitizes the various options
497 * to make sure we don't have conflicts, and initializes various
498 * members of td.
499 */
500static int add_job(struct thread_data *td, const char *jobname, int job_add_num)
501{
502 char *ddir_str[] = { "read", "write", "randread", "randwrite",
503 "rw", NULL, "randrw" };
504 struct stat sb;
505 int numjobs, ddir, i;
506 struct fio_file *f;
507
508#ifndef FIO_HAVE_LIBAIO
509 if (td->io_engine == FIO_LIBAIO) {
510 log_err("Linux libaio not available\n");
511 return 1;
512 }
513#endif
514#ifndef FIO_HAVE_POSIXAIO
515 if (td->io_engine == FIO_POSIXAIO) {
516 log_err("posix aio not available\n");
517 return 1;
518 }
519#endif
520
521 /*
522 * the def_thread is just for options, it's not a real job
523 */
524 if (td == &def_thread)
525 return 0;
526
527 /*
528 * Set default io engine, if none set
529 */
530 if (!td->io_ops) {
531 td->io_ops = load_ioengine(td, DEF_IO_ENGINE_NAME);
532 if (!td->io_ops) {
533 log_err("default engine %s not there?\n", DEF_IO_ENGINE_NAME);
534 return 1;
535 }
536 }
537
538 fixup_options(td);
539
540 td->filetype = FIO_TYPE_FILE;
541 if (!stat(jobname, &sb)) {
542 if (S_ISBLK(sb.st_mode))
543 td->filetype = FIO_TYPE_BD;
544 else if (S_ISCHR(sb.st_mode))
545 td->filetype = FIO_TYPE_CHAR;
546 }
547
548 if (td->odirect)
549 td->io_ops->flags |= FIO_RAWIO;
550
551 if (td->filename)
552 td->nr_uniq_files = 1;
553 else
554 td->nr_uniq_files = td->nr_files;
555
556 if (td->filetype == FIO_TYPE_FILE || td->filename) {
557 char tmp[PATH_MAX];
558 int len = 0;
559 int i;
560
561 if (td->directory && td->directory[0] != '\0')
562 sprintf(tmp, "%s/", td->directory);
563
564 td->files = malloc(sizeof(struct fio_file) * td->nr_files);
565
566 for_each_file(td, f, i) {
567 memset(f, 0, sizeof(*f));
568 f->fd = -1;
569
570 if (td->filename)
571 sprintf(tmp + len, "%s", td->filename);
572 else
573 sprintf(tmp + len, "%s.%d.%d", jobname, td->thread_number, i);
574 f->file_name = strdup(tmp);
575 }
576 } else {
577 td->nr_files = 1;
578 td->files = malloc(sizeof(struct fio_file));
579 f = &td->files[0];
580
581 memset(f, 0, sizeof(*f));
582 f->fd = -1;
583 f->file_name = strdup(jobname);
584 }
585
586 for_each_file(td, f, i) {
587 f->file_size = td->total_file_size / td->nr_files;
588 f->file_offset = td->start_offset;
589 }
590
591 fio_sem_init(&td->mutex, 0);
592
593 td->clat_stat[0].min_val = td->clat_stat[1].min_val = ULONG_MAX;
594 td->slat_stat[0].min_val = td->slat_stat[1].min_val = ULONG_MAX;
595 td->bw_stat[0].min_val = td->bw_stat[1].min_val = ULONG_MAX;
596
597 if (td->stonewall && td->thread_number > 1)
598 groupid++;
599
600 td->groupid = groupid;
601
602 if (setup_rate(td))
603 goto err;
604
605 if (td->write_lat_log) {
606 setup_log(&td->slat_log);
607 setup_log(&td->clat_log);
608 }
609 if (td->write_bw_log)
610 setup_log(&td->bw_log);
611
612 if (!td->name)
613 td->name = strdup(jobname);
614
615 ddir = td->ddir + (!td->sequential << 1) + (td->iomix << 2);
616
617 if (!terse_output) {
618 if (!job_add_num) {
619 if (td->io_ops->flags & FIO_CPUIO)
620 fprintf(f_out, "%s: ioengine=cpu, cpuload=%u, cpucycle=%u\n", td->name, td->cpuload, td->cpucycle);
621 else
622 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);
623 } else if (job_add_num == 1)
624 fprintf(f_out, "...\n");
625 }
626
627 /*
628 * recurse add identical jobs, clear numjobs and stonewall options
629 * as they don't apply to sub-jobs
630 */
631 numjobs = td->numjobs;
632 while (--numjobs) {
633 struct thread_data *td_new = get_new_job(0, td);
634
635 if (!td_new)
636 goto err;
637
638 td_new->numjobs = 1;
639 td_new->stonewall = 0;
640 job_add_num = numjobs - 1;
641
642 if (add_job(td_new, jobname, job_add_num))
643 goto err;
644 }
645 return 0;
646err:
647 put_job(td);
648 return -1;
649}
650
651/*
652 * Initialize the various random states we need (random io, block size ranges,
653 * read/write mix, etc).
654 */
655int init_random_state(struct thread_data *td)
656{
657 unsigned long seeds[4];
658 int fd, num_maps, blocks, i;
659 struct fio_file *f;
660
661 if (td->io_ops->flags & FIO_CPUIO)
662 return 0;
663
664 fd = open("/dev/urandom", O_RDONLY);
665 if (fd == -1) {
666 td_verror(td, errno);
667 return 1;
668 }
669
670 if (read(fd, seeds, sizeof(seeds)) < (int) sizeof(seeds)) {
671 td_verror(td, EIO);
672 close(fd);
673 return 1;
674 }
675
676 close(fd);
677
678 os_random_seed(seeds[0], &td->bsrange_state);
679 os_random_seed(seeds[1], &td->verify_state);
680 os_random_seed(seeds[2], &td->rwmix_state);
681
682 if (td->sequential)
683 return 0;
684
685 if (td->rand_repeatable)
686 seeds[3] = DEF_RANDSEED;
687
688 if (!td->norandommap) {
689 for_each_file(td, f, i) {
690 blocks = (f->file_size + td->min_bs - 1) / td->min_bs;
691 num_maps = blocks / BLOCKS_PER_MAP;
692 f->file_map = malloc(num_maps * sizeof(long));
693 f->num_maps = num_maps;
694 memset(f->file_map, 0, num_maps * sizeof(long));
695 }
696 }
697
698 os_random_seed(seeds[3], &td->random_state);
699 return 0;
700}
701
702static void fill_cpu_mask(os_cpu_mask_t cpumask, int cpu)
703{
704#ifdef FIO_HAVE_CPU_AFFINITY
705 unsigned int i;
706
707 CPU_ZERO(&cpumask);
708
709 for (i = 0; i < sizeof(int) * 8; i++) {
710 if ((1 << i) & cpu)
711 CPU_SET(i, &cpumask);
712 }
713#endif
714}
715
716static int is_empty_or_comment(char *line)
717{
718 unsigned int i;
719
720 for (i = 0; i < strlen(line); i++) {
721 if (line[i] == ';')
722 return 1;
723 if (!isspace(line[i]) && !iscntrl(line[i]))
724 return 0;
725 }
726
727 return 1;
728}
729
730static int str_rw_cb(void *data, const char *mem)
731{
732 struct thread_data *td = data;
733
734 if (!strncmp(mem, "read", 4) || !strncmp(mem, "0", 1)) {
735 td->ddir = DDIR_READ;
736 td->sequential = 1;
737 return 0;
738 } else if (!strncmp(mem, "randread", 8)) {
739 td->ddir = DDIR_READ;
740 td->sequential = 0;
741 return 0;
742 } else if (!strncmp(mem, "write", 5) || !strncmp(mem, "1", 1)) {
743 td->ddir = DDIR_WRITE;
744 td->sequential = 1;
745 return 0;
746 } else if (!strncmp(mem, "randwrite", 9)) {
747 td->ddir = DDIR_WRITE;
748 td->sequential = 0;
749 return 0;
750 } else if (!strncmp(mem, "rw", 2)) {
751 td->ddir = 0;
752 td->iomix = 1;
753 td->sequential = 1;
754 return 0;
755 } else if (!strncmp(mem, "randrw", 6)) {
756 td->ddir = 0;
757 td->iomix = 1;
758 td->sequential = 0;
759 return 0;
760 }
761
762 log_err("fio: data direction: read, write, randread, randwrite, rw, randrw\n");
763 return 1;
764}
765
766static int str_verify_cb(void *data, const char *mem)
767{
768 struct thread_data *td = data;
769
770 if (!strncmp(mem, "0", 1)) {
771 td->verify = VERIFY_NONE;
772 return 0;
773 } else if (!strncmp(mem, "md5", 3) || !strncmp(mem, "1", 1)) {
774 td->verify = VERIFY_MD5;
775 return 0;
776 } else if (!strncmp(mem, "crc32", 5)) {
777 td->verify = VERIFY_CRC32;
778 return 0;
779 }
780
781 log_err("fio: verify types: md5, crc32\n");
782 return 1;
783}
784
785static int str_mem_cb(void *data, const char *mem)
786{
787 struct thread_data *td = data;
788
789 if (!strncmp(mem, "malloc", 6)) {
790 td->mem_type = MEM_MALLOC;
791 return 0;
792 } else if (!strncmp(mem, "shm", 3)) {
793 td->mem_type = MEM_SHM;
794 return 0;
795 } else if (!strncmp(mem, "mmap", 4)) {
796 td->mem_type = MEM_MMAP;
797 return 0;
798 }
799
800 log_err("fio: mem type: malloc, shm, mmap\n");
801 return 1;
802}
803
804static int str_ioengine_cb(void *data, const char *str)
805{
806 struct thread_data *td = data;
807
808 td->io_ops = load_ioengine(td, str);
809 if (td->io_ops)
810 return 0;
811
812 log_err("fio: ioengine: { linuxaio, aio, libaio }, posixaio, sync, mmap, sgio, splice, cpu\n");
813 return 1;
814}
815
816static int str_lockmem_cb(void fio_unused *data, unsigned long *val)
817{
818 mlock_size = *val;
819 return 0;
820}
821
822static int str_prioclass_cb(void *data, unsigned int *val)
823{
824 struct thread_data *td = data;
825
826 td->ioprio |= *val << IOPRIO_CLASS_SHIFT;
827 return 0;
828}
829
830static int str_prio_cb(void *data, unsigned int *val)
831{
832 struct thread_data *td = data;
833
834 td->ioprio |= *val;
835 return 0;
836}
837
838static int str_exitall_cb(void)
839{
840 exitall_on_terminate = 1;
841 return 0;
842}
843
844static int str_cpumask_cb(void *data, unsigned int *val)
845{
846 struct thread_data *td = data;
847
848 fill_cpu_mask(td->cpumask, *val);
849 return 0;
850}
851
852/*
853 * This is our [ini] type file parser.
854 */
855int parse_jobs_ini(char *file, int stonewall_flag)
856{
857 unsigned int global;
858 struct thread_data *td;
859 char *string, *name;
860 fpos_t off;
861 FILE *f;
862 char *p;
863 int ret = 0, stonewall;
864
865 f = fopen(file, "r");
866 if (!f) {
867 perror("fopen job file");
868 return 1;
869 }
870
871 string = malloc(4096);
872 name = malloc(256);
873 memset(name, 0, 256);
874
875 stonewall = stonewall_flag;
876 do {
877 p = fgets(string, 4095, f);
878 if (!p)
879 break;
880 if (is_empty_or_comment(p))
881 continue;
882 if (sscanf(p, "[%255s]", name) != 1)
883 continue;
884
885 global = !strncmp(name, "global", 6);
886
887 name[strlen(name) - 1] = '\0';
888
889 td = get_new_job(global, &def_thread);
890 if (!td) {
891 ret = 1;
892 break;
893 }
894
895 /*
896 * Seperate multiple job files by a stonewall
897 */
898 if (!global && stonewall) {
899 td->stonewall = stonewall;
900 stonewall = 0;
901 }
902
903 fgetpos(f, &off);
904 while ((p = fgets(string, 4096, f)) != NULL) {
905 if (is_empty_or_comment(p))
906 continue;
907
908 strip_blank_front(&p);
909
910 if (p[0] == '[')
911 break;
912
913 strip_blank_end(p);
914
915 fgetpos(f, &off);
916
917 /*
918 * Don't break here, continue parsing options so we
919 * dump all the bad ones. Makes trial/error fixups
920 * easier on the user.
921 */
922 ret |= parse_option(p, options, td);
923 }
924
925 if (!ret) {
926 fsetpos(f, &off);
927 ret = add_job(td, name, 0);
928 }
929 } while (!ret);
930
931 free(string);
932 free(name);
933 fclose(f);
934 return ret;
935}
936
937static int fill_def_thread(void)
938{
939 memset(&def_thread, 0, sizeof(def_thread));
940
941 if (fio_getaffinity(getpid(), &def_thread.cpumask) == -1) {
942 perror("sched_getaffinity");
943 return 1;
944 }
945
946 /*
947 * fill globals
948 */
949 def_thread.ddir = DDIR_READ;
950 def_thread.iomix = 0;
951 def_thread.bs = DEF_BS;
952 def_thread.min_bs = 0;
953 def_thread.max_bs = 0;
954 def_thread.odirect = DEF_ODIRECT;
955 def_thread.ratecycle = DEF_RATE_CYCLE;
956 def_thread.sequential = DEF_SEQUENTIAL;
957 def_thread.timeout = def_timeout;
958 def_thread.overwrite = DEF_OVERWRITE;
959 def_thread.invalidate_cache = DEF_INVALIDATE;
960 def_thread.sync_io = DEF_SYNCIO;
961 def_thread.mem_type = MEM_MALLOC;
962 def_thread.bw_avg_time = DEF_BWAVGTIME;
963 def_thread.create_serialize = DEF_CREATE_SER;
964 def_thread.create_fsync = DEF_CREATE_FSYNC;
965 def_thread.loops = DEF_LOOPS;
966 def_thread.verify = DEF_VERIFY;
967 def_thread.stonewall = DEF_STONEWALL;
968 def_thread.numjobs = DEF_NUMJOBS;
969 def_thread.use_thread = DEF_USE_THREAD;
970 def_thread.rwmixcycle = DEF_RWMIX_CYCLE;
971 def_thread.rwmixread = DEF_RWMIX_READ;
972 def_thread.nice = DEF_NICE;
973 def_thread.rand_repeatable = DEF_RAND_REPEAT;
974 def_thread.nr_files = DEF_NR_FILES;
975 def_thread.unlink = DEF_UNLINK;
976 def_thread.write_bw_log = write_bw_log;
977 def_thread.write_lat_log = write_lat_log;
978 def_thread.norandommap = DEF_NO_RAND_MAP;
979#ifdef FIO_HAVE_DISK_UTIL
980 def_thread.do_disk_util = 1;
981#endif
982
983 return 0;
984}
985
986static void usage(void)
987{
988 printf("%s\n", fio_version_string);
989 printf("\t--output\tWrite output to file\n");
990 printf("\t--timeout\tRuntime in seconds\n");
991 printf("\t--latency-log\tGenerate per-job latency logs\n");
992 printf("\t--bandwidth-log\tGenerate per-job bandwidth logs\n");
993 printf("\t--minimal\tMinimal (terse) output\n");
994 printf("\t--version\tPrint version info and exit\n");
995}
996
997static int parse_cmd_line(int argc, char *argv[])
998{
999 struct thread_data *td = NULL;
1000 int c, ini_idx = 0, lidx, ret;
1001
1002 while ((c = getopt_long(argc, argv, "", long_options, &lidx)) != -1) {
1003 switch (c) {
1004 case 't':
1005 def_timeout = atoi(optarg);
1006 break;
1007 case 'l':
1008 write_lat_log = 1;
1009 break;
1010 case 'w':
1011 write_bw_log = 1;
1012 break;
1013 case 'o':
1014 f_out = fopen(optarg, "w+");
1015 if (!f_out) {
1016 perror("fopen output");
1017 exit(1);
1018 }
1019 f_err = f_out;
1020 break;
1021 case 'm':
1022 terse_output = 1;
1023 break;
1024 case 'h':
1025 usage();
1026 exit(0);
1027 case 'v':
1028 printf("%s\n", fio_version_string);
1029 exit(0);
1030 case FIO_GETOPT_JOB: {
1031 const char *opt = long_options[lidx].name;
1032 char *val = optarg;
1033
1034 if (!strncmp(opt, "name", 4) && td) {
1035 ret = add_job(td, td->name ?: "fio", 0);
1036 if (ret) {
1037 put_job(td);
1038 return 0;
1039 }
1040 td = NULL;
1041 }
1042 if (!td) {
1043 int global = !strncmp(val, "global", 6);
1044
1045 td = get_new_job(global, &def_thread);
1046 if (!td)
1047 return 0;
1048 }
1049
1050 parse_cmd_option(opt, val, options, td);
1051 break;
1052 }
1053 default:
1054 printf("optarg <<%s>>\n", argv[optind]);
1055 break;
1056 }
1057 }
1058
1059 if (td) {
1060 ret = add_job(td, td->name ?: "fio", 0);
1061 if (ret)
1062 put_job(td);
1063 }
1064
1065 while (optind < argc) {
1066 ini_idx++;
1067 ini_file = realloc(ini_file, ini_idx * sizeof(char *));
1068 ini_file[ini_idx - 1] = strdup(argv[optind]);
1069 optind++;
1070 }
1071
1072 return ini_idx;
1073}
1074
1075static void free_shm(void)
1076{
1077 struct shmid_ds sbuf;
1078
1079 if (threads) {
1080 shmdt((void *) threads);
1081 threads = NULL;
1082 shmctl(shm_id, IPC_RMID, &sbuf);
1083 }
1084}
1085
1086/*
1087 * The thread area is shared between the main process and the job
1088 * threads/processes. So setup a shared memory segment that will hold
1089 * all the job info.
1090 */
1091static int setup_thread_area(void)
1092{
1093 /*
1094 * 1024 is too much on some machines, scale max_jobs if
1095 * we get a failure that looks like too large a shm segment
1096 */
1097 do {
1098 size_t size = max_jobs * sizeof(struct thread_data);
1099
1100 shm_id = shmget(0, size, IPC_CREAT | 0600);
1101 if (shm_id != -1)
1102 break;
1103 if (errno != EINVAL) {
1104 perror("shmget");
1105 break;
1106 }
1107
1108 max_jobs >>= 1;
1109 } while (max_jobs);
1110
1111 if (shm_id == -1)
1112 return 1;
1113
1114 threads = shmat(shm_id, NULL, 0);
1115 if (threads == (void *) -1) {
1116 perror("shmat");
1117 return 1;
1118 }
1119
1120 atexit(free_shm);
1121 return 0;
1122}
1123
1124/*
1125 * Copy the fio options into the long options map, so we mirror
1126 * job and cmd line options.
1127 */
1128static void dupe_job_options(void)
1129{
1130 struct fio_option *o;
1131 unsigned int i;
1132
1133 i = 0;
1134 while (long_options[i].name)
1135 i++;
1136
1137 o = &options[0];
1138 while (o->name) {
1139 long_options[i].name = o->name;
1140 long_options[i].val = FIO_GETOPT_JOB;
1141 if (o->type == FIO_OPT_STR_SET)
1142 long_options[i].has_arg = no_argument;
1143 else
1144 long_options[i].has_arg = required_argument;
1145
1146 i++;
1147 o++;
1148 assert(i < FIO_JOB_OPTS + FIO_CMD_OPTS);
1149 }
1150}
1151
1152int parse_options(int argc, char *argv[])
1153{
1154 int job_files, i;
1155
1156 f_out = stdout;
1157 f_err = stderr;
1158
1159 dupe_job_options();
1160
1161 if (setup_thread_area())
1162 return 1;
1163 if (fill_def_thread())
1164 return 1;
1165
1166 job_files = parse_cmd_line(argc, argv);
1167
1168 for (i = 0; i < job_files; i++) {
1169 if (fill_def_thread())
1170 return 1;
1171 if (parse_jobs_ini(ini_file[i], i))
1172 return 1;
1173 free(ini_file[i]);
1174 }
1175
1176 free(ini_file);
1177
1178 if (!thread_number) {
1179 log_err("No jobs defined(s)\n");
1180 usage();
1181 return 1;
1182 }
1183
1184 return 0;
1185}
fio - Flexible IO Tester