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[PATCH] Fix segfault if ioengine isn't set
[fio.git] / init.c
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1/*
2 * This file contains the ini and command liner parser. It will create
3 * and initialize the specified jobs.
4 */
5#include <stdio.h>
6#include <stdlib.h>
7#include <unistd.h>
8#include <fcntl.h>
9#include <ctype.h>
10#include <string.h>
11#include <errno.h>
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"
18
19/*
20 * The default options
21 */
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)
27#define DEF_IO_ENGINE_NAME "sync"
28#define DEF_SEQUENTIAL (1)
29#define DEF_RAND_REPEAT (1)
30#define DEF_OVERWRITE (1)
31#define DEF_CREATE (1)
32#define DEF_INVALIDATE (1)
33#define DEF_SYNCIO (0)
34#define DEF_RANDSEED (0xb1899bedUL)
35#define DEF_BWAVGTIME (500)
36#define DEF_CREATE_SER (1)
37#define DEF_CREATE_FSYNC (1)
38#define DEF_LOOPS (1)
39#define DEF_VERIFY (0)
40#define DEF_STONEWALL (0)
41#define DEF_NUMJOBS (1)
42#define DEF_USE_THREAD (0)
43#define DEF_FILE_SIZE (1024 * 1024 * 1024UL)
44#define DEF_ZONE_SIZE (0)
45#define DEF_ZONE_SKIP (0)
46#define DEF_RWMIX_CYCLE (500)
47#define DEF_RWMIX_READ (50)
48#define DEF_NICE (0)
49
50static int def_timeout = DEF_TIMEOUT;
51
52static char fio_version_string[] = "fio 1.5";
53
54static char **ini_file;
55static int max_jobs = MAX_JOBS;
56
57struct thread_data def_thread;
58struct thread_data *threads = NULL;
59
60int rate_quit = 0;
61int write_lat_log = 0;
62int write_bw_log = 0;
63int exitall_on_terminate = 0;
64int terse_output = 0;
65unsigned long long mlock_size = 0;
66FILE *f_out = NULL;
67FILE *f_err = NULL;
68
69/*
70 * Return a free job structure.
71 */
72static struct thread_data *get_new_job(int global, struct thread_data *parent)
73{
74 struct thread_data *td;
75
76 if (global)
77 return &def_thread;
78 if (thread_number >= max_jobs)
79 return NULL;
80
81 td = &threads[thread_number++];
82 *td = *parent;
83 td->name[0] = '\0';
84
85 td->fd = -1;
86 td->thread_number = thread_number;
87 return td;
88}
89
90static void put_job(struct thread_data *td)
91{
92 memset(&threads[td->thread_number - 1], 0, sizeof(*td));
93 thread_number--;
94}
95
96/*
97 * Adds a job to the list of things todo. Sanitizes the various options
98 * to make sure we don't have conflicts, and initializes various
99 * members of td.
100 */
101static int add_job(struct thread_data *td, const char *jobname, int job_add_num)
102{
103 char *ddir_str[] = { "read", "write", "randread", "randwrite",
104 "rw", NULL, "randrw" };
105 struct stat sb;
106 int numjobs, ddir;
107
108#ifndef FIO_HAVE_LIBAIO
109 if (td->io_engine == FIO_LIBAIO) {
110 log_err("Linux libaio not available\n");
111 return 1;
112 }
113#endif
114#ifndef FIO_HAVE_POSIXAIO
115 if (td->io_engine == FIO_POSIXAIO) {
116 log_err("posix aio not available\n");
117 return 1;
118 }
119#endif
120
121 /*
122 * the def_thread is just for options, it's not a real job
123 */
124 if (td == &def_thread)
125 return 0;
126
127 /*
128 * Set default io engine, if none set
129 */
130 if (!td->io_ops) {
131 td->io_ops = load_ioengine(td, DEF_IO_ENGINE_NAME);
132 if (!td->io_ops) {
133 log_err("default engine %s not there?\n", DEF_IO_ENGINE_NAME);
134 return 1;
135 }
136 }
137
138 if (td->io_ops->flags & FIO_SYNCIO)
139 td->iodepth = 1;
140 else {
141 if (!td->iodepth)
142 td->iodepth = 1;
143 }
144
145 /*
146 * only really works for sequential io for now
147 */
148 if (td->zone_size && !td->sequential)
149 td->zone_size = 0;
150
151 /*
152 * Reads can do overwrites, we always need to pre-create the file
153 */
154 if (td_read(td) || td_rw(td))
155 td->overwrite = 1;
156
157 td->filetype = FIO_TYPE_FILE;
158 if (!stat(jobname, &sb)) {
159 if (S_ISBLK(sb.st_mode))
160 td->filetype = FIO_TYPE_BD;
161 else if (S_ISCHR(sb.st_mode))
162 td->filetype = FIO_TYPE_CHAR;
163 }
164
165 if (td->filetype == FIO_TYPE_FILE) {
166 char tmp[PATH_MAX];
167
168 if (td->directory && td->directory[0] != '\0')
169 sprintf(tmp, "%s/%s.%d", td->directory, jobname, td->thread_number);
170 else
171 sprintf(tmp, "%s.%d", jobname, td->thread_number);
172 td->file_name = strdup(tmp);
173 } else
174 td->file_name = strdup(jobname);
175
176 fio_sem_init(&td->mutex, 0);
177
178 td->clat_stat[0].min_val = td->clat_stat[1].min_val = ULONG_MAX;
179 td->slat_stat[0].min_val = td->slat_stat[1].min_val = ULONG_MAX;
180 td->bw_stat[0].min_val = td->bw_stat[1].min_val = ULONG_MAX;
181
182 if (td->min_bs == -1U)
183 td->min_bs = td->bs;
184 if (td->max_bs == -1U)
185 td->max_bs = td->bs;
186 if (td_read(td) && !td_rw(td))
187 td->verify = 0;
188
189 if (td->stonewall && td->thread_number > 1)
190 groupid++;
191
192 td->groupid = groupid;
193
194 if (setup_rate(td))
195 goto err;
196
197 if (write_lat_log) {
198 setup_log(&td->slat_log);
199 setup_log(&td->clat_log);
200 }
201 if (write_bw_log)
202 setup_log(&td->bw_log);
203
204 if (td->name[0] == '\0')
205 snprintf(td->name, sizeof(td->name)-1, "client%d", td->thread_number);
206
207 ddir = td->ddir + (!td->sequential << 1) + (td->iomix << 2);
208
209 if (!terse_output) {
210 if (!job_add_num) {
211 if (td->io_ops->flags & FIO_CPUIO)
212 fprintf(f_out, "%s: ioengine=cpu, cpuload=%u, cpucycle=%u\n", td->name, td->cpuload, td->cpucycle);
213 else
214 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);
215 } else if (job_add_num == 1)
216 fprintf(f_out, "...\n");
217 }
218
219 /*
220 * recurse add identical jobs, clear numjobs and stonewall options
221 * as they don't apply to sub-jobs
222 */
223 numjobs = td->numjobs;
224 while (--numjobs) {
225 struct thread_data *td_new = get_new_job(0, td);
226
227 if (!td_new)
228 goto err;
229
230 td_new->numjobs = 1;
231 td_new->stonewall = 0;
232 job_add_num = numjobs - 1;
233
234 if (add_job(td_new, jobname, job_add_num))
235 goto err;
236 }
237 return 0;
238err:
239 put_job(td);
240 return -1;
241}
242
243/*
244 * Initialize the various random states we need (random io, block size ranges,
245 * read/write mix, etc).
246 */
247int init_random_state(struct thread_data *td)
248{
249 unsigned long seeds[4];
250 int fd, num_maps, blocks;
251
252 fd = open("/dev/urandom", O_RDONLY);
253 if (fd == -1) {
254 td_verror(td, errno);
255 return 1;
256 }
257
258 if (read(fd, seeds, sizeof(seeds)) < (int) sizeof(seeds)) {
259 td_verror(td, EIO);
260 close(fd);
261 return 1;
262 }
263
264 close(fd);
265
266 os_random_seed(seeds[0], &td->bsrange_state);
267 os_random_seed(seeds[1], &td->verify_state);
268 os_random_seed(seeds[2], &td->rwmix_state);
269
270 if (td->sequential)
271 return 0;
272
273 if (td->rand_repeatable)
274 seeds[3] = DEF_RANDSEED;
275
276 blocks = (td->io_size + td->min_bs - 1) / td->min_bs;
277 num_maps = blocks / BLOCKS_PER_MAP;
278 td->file_map = malloc(num_maps * sizeof(long));
279 td->num_maps = num_maps;
280 memset(td->file_map, 0, num_maps * sizeof(long));
281
282 os_random_seed(seeds[3], &td->random_state);
283 return 0;
284}
285
286static void fill_cpu_mask(os_cpu_mask_t cpumask, int cpu)
287{
288#ifdef FIO_HAVE_CPU_AFFINITY
289 unsigned int i;
290
291 CPU_ZERO(&cpumask);
292
293 for (i = 0; i < sizeof(int) * 8; i++) {
294 if ((1 << i) & cpu)
295 CPU_SET(i, &cpumask);
296 }
297#endif
298}
299
300static unsigned long get_mult_time(char c)
301{
302 switch (c) {
303 case 'm':
304 case 'M':
305 return 60;
306 case 'h':
307 case 'H':
308 return 60 * 60;
309 case 'd':
310 case 'D':
311 return 24 * 60 * 60;
312 default:
313 return 1;
314 }
315}
316
317static unsigned long get_mult_bytes(char c)
318{
319 switch (c) {
320 case 'k':
321 case 'K':
322 return 1024;
323 case 'm':
324 case 'M':
325 return 1024 * 1024;
326 case 'g':
327 case 'G':
328 return 1024 * 1024 * 1024;
329 default:
330 return 1;
331 }
332}
333
334/*
335 * convert string after '=' into decimal value, noting any size suffix
336 */
337static int str_to_decimal(char *p, unsigned long long *val, int kilo)
338{
339 char *str;
340 int len;
341
342 str = strchr(p, '=');
343 if (!str)
344 return 1;
345
346 str++;
347 len = strlen(str);
348
349 *val = strtoul(str, NULL, 10);
350 if (*val == ULONG_MAX && errno == ERANGE)
351 return 1;
352
353 if (kilo)
354 *val *= get_mult_bytes(str[len - 1]);
355 else
356 *val *= get_mult_time(str[len - 1]);
357 return 0;
358}
359
360static int check_str_bytes(char *p, char *name, unsigned long long *val)
361{
362 if (strncmp(p, name, strlen(name) - 1))
363 return 1;
364
365 return str_to_decimal(p, val, 1);
366}
367
368static int check_str_time(char *p, char *name, unsigned long long *val)
369{
370 if (strncmp(p, name, strlen(name) - 1))
371 return 1;
372
373 return str_to_decimal(p, val, 0);
374}
375
376static void strip_blank_front(char **p)
377{
378 char *s = *p;
379
380 while (isspace(*s))
381 s++;
382}
383
384static void strip_blank_end(char *p)
385{
386 char *s = p + strlen(p) - 1;
387
388 while (isspace(*s) || iscntrl(*s))
389 s--;
390
391 *(s + 1) = '\0';
392}
393
394typedef int (str_cb_fn)(struct thread_data *, char *);
395
396static int check_str(char *p, char *name, str_cb_fn *cb, struct thread_data *td)
397{
398 char *s;
399
400 if (strncmp(p, name, strlen(name)))
401 return 1;
402
403 s = strstr(p, name);
404 if (!s)
405 return 1;
406
407 s = strchr(s, '=');
408 if (!s)
409 return 1;
410
411 s++;
412 strip_blank_front(&s);
413 return cb(td, s);
414}
415
416static int check_strstore(char *p, char *name, char *dest)
417{
418 char *s;
419
420 if (strncmp(p, name, strlen(name)))
421 return 1;
422
423 s = strstr(p, name);
424 if (!s)
425 return 1;
426
427 s = strchr(p, '=');
428 if (!s)
429 return 1;
430
431 s++;
432 strip_blank_front(&s);
433
434 strcpy(dest, s);
435 return 0;
436}
437
438static int __check_range_bytes(char *str, unsigned long *val)
439{
440 char suffix;
441
442 if (sscanf(str, "%lu%c", val, &suffix) == 2) {
443 *val *= get_mult_bytes(suffix);
444 return 0;
445 }
446
447 if (sscanf(str, "%lu", val) == 1)
448 return 0;
449
450 return 1;
451}
452
453static int check_range_bytes(char *p, char *name, unsigned long *s,
454 unsigned long *e)
455{
456 char option[128];
457 char *str, *p1, *p2;
458
459 if (strncmp(p, name, strlen(name)))
460 return 1;
461
462 strcpy(option, p);
463 p = option;
464
465 str = strstr(p, name);
466 if (!str)
467 return 1;
468
469 p += strlen(name);
470
471 str = strchr(p, '=');
472 if (!str)
473 return 1;
474
475 /*
476 * 'p' now holds whatever is after the '=' sign
477 */
478 p1 = str + 1;
479
480 /*
481 * terminate p1 at the '-' sign
482 */
483 p = strchr(p1, '-');
484 if (!p)
485 return 1;
486
487 p2 = p + 1;
488 *p = '\0';
489
490 if (!__check_range_bytes(p1, s) && !__check_range_bytes(p2, e))
491 return 0;
492
493 return 1;
494}
495
496static int check_int(char *p, char *name, unsigned int *val)
497{
498 char *str;
499
500 if (strncmp(p, name, strlen(name)))
501 return 1;
502
503 str = strstr(p, name);
504 if (!str)
505 return 1;
506
507 str = strchr(p, '=');
508 if (!str)
509 return 1;
510
511 str++;
512
513 if (sscanf(str, "%u", val) == 1)
514 return 0;
515
516 return 1;
517}
518
519static int check_strset(char *p, char *name)
520{
521 return strncmp(p, name, strlen(name));
522}
523
524static int is_empty_or_comment(char *line)
525{
526 unsigned int i;
527
528 for (i = 0; i < strlen(line); i++) {
529 if (line[i] == ';')
530 return 1;
531 if (!isspace(line[i]) && !iscntrl(line[i]))
532 return 0;
533 }
534
535 return 1;
536}
537
538static int str_rw_cb(struct thread_data *td, char *mem)
539{
540 if (!strncmp(mem, "read", 4) || !strncmp(mem, "0", 1)) {
541 td->ddir = DDIR_READ;
542 td->sequential = 1;
543 return 0;
544 } else if (!strncmp(mem, "randread", 8)) {
545 td->ddir = DDIR_READ;
546 td->sequential = 0;
547 return 0;
548 } else if (!strncmp(mem, "write", 5) || !strncmp(mem, "1", 1)) {
549 td->ddir = DDIR_WRITE;
550 td->sequential = 1;
551 return 0;
552 } else if (!strncmp(mem, "randwrite", 9)) {
553 td->ddir = DDIR_WRITE;
554 td->sequential = 0;
555 return 0;
556 } else if (!strncmp(mem, "rw", 2)) {
557 td->ddir = 0;
558 td->iomix = 1;
559 td->sequential = 1;
560 return 0;
561 } else if (!strncmp(mem, "randrw", 6)) {
562 td->ddir = 0;
563 td->iomix = 1;
564 td->sequential = 0;
565 return 0;
566 }
567
568 log_err("fio: data direction: read, write, randread, randwrite, rw, randrw\n");
569 return 1;
570}
571
572static int str_verify_cb(struct thread_data *td, char *mem)
573{
574 if (!strncmp(mem, "0", 1)) {
575 td->verify = VERIFY_NONE;
576 return 0;
577 } else if (!strncmp(mem, "md5", 3) || !strncmp(mem, "1", 1)) {
578 td->verify = VERIFY_MD5;
579 return 0;
580 } else if (!strncmp(mem, "crc32", 5)) {
581 td->verify = VERIFY_CRC32;
582 return 0;
583 }
584
585 log_err("fio: verify types: md5, crc32\n");
586 return 1;
587}
588
589static int str_mem_cb(struct thread_data *td, char *mem)
590{
591 if (!strncmp(mem, "malloc", 6)) {
592 td->mem_type = MEM_MALLOC;
593 return 0;
594 } else if (!strncmp(mem, "shm", 3)) {
595 td->mem_type = MEM_SHM;
596 return 0;
597 } else if (!strncmp(mem, "mmap", 4)) {
598 td->mem_type = MEM_MMAP;
599 return 0;
600 }
601
602 log_err("fio: mem type: malloc, shm, mmap\n");
603 return 1;
604}
605
606static int str_ioengine_cb(struct thread_data *td, char *str)
607{
608 td->io_ops = load_ioengine(td, str);
609 if (td->io_ops)
610 return 0;
611
612 log_err("fio: ioengine: { linuxaio, aio, libaio }, posixaio, sync, mmap, sgio, splice, cpu\n");
613 return 1;
614}
615
616/*
617 * This is our [ini] type file parser.
618 */
619int parse_jobs_ini(char *file, int stonewall_flag)
620{
621 unsigned int prioclass, prio, cpu, global, il;
622 unsigned long long ull;
623 unsigned long ul1, ul2;
624 struct thread_data *td;
625 char *string, *name, *tmpbuf;
626 fpos_t off;
627 FILE *f;
628 char *p;
629 int ret = 0, stonewall;
630
631 f = fopen(file, "r");
632 if (!f) {
633 perror("fopen job file");
634 return 1;
635 }
636
637 string = malloc(4096);
638 name = malloc(256);
639 tmpbuf = malloc(4096);
640
641 stonewall = stonewall_flag;
642 while ((p = fgets(string, 4096, f)) != NULL) {
643 if (ret)
644 break;
645 if (is_empty_or_comment(p))
646 continue;
647 if (sscanf(p, "[%s]", name) != 1)
648 continue;
649
650 global = !strncmp(name, "global", 6);
651
652 name[strlen(name) - 1] = '\0';
653
654 td = get_new_job(global, &def_thread);
655 if (!td) {
656 ret = 1;
657 break;
658 }
659
660 /*
661 * Seperate multiple job files by a stonewall
662 */
663 if (!global && stonewall) {
664 td->stonewall = stonewall;
665 stonewall = 0;
666 }
667
668 fgetpos(f, &off);
669 while ((p = fgets(string, 4096, f)) != NULL) {
670 if (is_empty_or_comment(p))
671 continue;
672 if (strstr(p, "["))
673 break;
674 strip_blank_front(&p);
675 strip_blank_end(p);
676
677 if (!check_int(p, "prio", &prio)) {
678#ifndef FIO_HAVE_IOPRIO
679 log_err("io priorities not available\n");
680 ret = 1;
681 break;
682#endif
683 td->ioprio |= prio;
684 fgetpos(f, &off);
685 continue;
686 }
687 if (!check_int(p, "prioclass", &prioclass)) {
688#ifndef FIO_HAVE_IOPRIO
689 log_err("io priorities not available\n");
690 ret = 1;
691 break;
692#else
693 td->ioprio |= prioclass << IOPRIO_CLASS_SHIFT;
694 fgetpos(f, &off);
695 continue;
696#endif
697 }
698 if (!check_int(p, "direct", &il)) {
699 td->odirect = il;
700 fgetpos(f, &off);
701 continue;
702 }
703 if (!check_int(p, "rand_repeatable", &il)) {
704 td->rand_repeatable = il;
705 fgetpos(f, &off);
706 continue;
707 }
708 if (!check_int(p, "rate", &td->rate)) {
709 fgetpos(f, &off);
710 continue;
711 }
712 if (!check_int(p, "ratemin", &td->ratemin)) {
713 fgetpos(f, &off);
714 continue;
715 }
716 if (!check_int(p, "ratecycle", &td->ratecycle)) {
717 fgetpos(f, &off);
718 continue;
719 }
720 if (!check_int(p, "cpuload", &td->cpuload)) {
721 fgetpos(f, &off);
722 continue;
723 }
724 if (!check_int(p, "cpuchunks", &td->cpucycle)) {
725 fgetpos(f, &off);
726 continue;
727 }
728 if (!check_int(p, "thinktime", &td->thinktime)) {
729 fgetpos(f, &off);
730 continue;
731 }
732 if (!check_int(p, "cpumask", &cpu)) {
733#ifndef FIO_HAVE_CPU_AFFINITY
734 log_err("cpu affinity not available\n");
735 ret = 1;
736 break;
737#endif
738 fill_cpu_mask(td->cpumask, cpu);
739 fgetpos(f, &off);
740 continue;
741 }
742 if (!check_int(p, "fsync", &td->fsync_blocks)) {
743 fgetpos(f, &off);
744 td->end_fsync = 1;
745 continue;
746 }
747 if (!check_int(p, "startdelay", &td->start_delay)) {
748 fgetpos(f, &off);
749 continue;
750 }
751 if (!check_str_time(p, "timeout", &ull)) {
752 td->timeout = ull;
753 fgetpos(f, &off);
754 continue;
755 }
756 if (!check_int(p, "invalidate", &il)) {
757 td->invalidate_cache = il;
758 fgetpos(f, &off);
759 continue;
760 }
761 if (!check_int(p, "iodepth", &td->iodepth)) {
762 fgetpos(f, &off);
763 continue;
764 }
765 if (!check_int(p, "sync", &il)) {
766 td->sync_io = il;
767 fgetpos(f, &off);
768 continue;
769 }
770 if (!check_int(p, "bwavgtime", &td->bw_avg_time)) {
771 fgetpos(f, &off);
772 continue;
773 }
774 if (!check_int(p, "create_serialize", &il)) {
775 td->create_serialize = il;
776 fgetpos(f, &off);
777 continue;
778 }
779 if (!check_int(p, "create_fsync", &il)) {
780 td->create_fsync = il;
781 fgetpos(f, &off);
782 continue;
783 }
784 if (!check_int(p, "end_fsync", &il)) {
785 td->end_fsync = il;
786 fgetpos(f, &off);
787 continue;
788 }
789 if (!check_int(p, "loops", &td->loops)) {
790 fgetpos(f, &off);
791 continue;
792 }
793 if (!check_int(p, "numjobs", &td->numjobs)) {
794 fgetpos(f, &off);
795 continue;
796 }
797 if (!check_int(p, "overwrite", &il)) {
798 td->overwrite = il;
799 fgetpos(f, &off);
800 continue;
801 }
802 if (!check_int(p, "rwmixcycle", &td->rwmixcycle)) {
803 fgetpos(f, &off);
804 continue;
805 }
806 if (!check_int(p, "rwmixread", &il)) {
807 if (il > 100)
808 il = 100;
809 td->rwmixread = il;
810 fgetpos(f, &off);
811 continue;
812 }
813 if (!check_int(p, "rwmixwrite", &il)) {
814 if (il > 100)
815 il = 100;
816 td->rwmixread = 100 - il;
817 fgetpos(f, &off);
818 continue;
819 }
820 if (!check_int(p, "nice", &td->nice)) {
821 fgetpos(f, &off);
822 continue;
823 }
824 if (!check_range_bytes(p, "bsrange", &ul1, &ul2)) {
825 if (ul1 > ul2) {
826 td->max_bs = ul1;
827 td->min_bs = ul2;
828 } else {
829 td->max_bs = ul2;
830 td->min_bs = ul1;
831 }
832 fgetpos(f, &off);
833 continue;
834 }
835 if (!check_str_bytes(p, "bs", &ull)) {
836 td->bs = ull;
837 fgetpos(f, &off);
838 continue;
839 }
840 if (!check_str_bytes(p, "size", &td->file_size)) {
841 fgetpos(f, &off);
842 continue;
843 }
844 if (!check_str_bytes(p, "offset", &td->file_offset)) {
845 fgetpos(f, &off);
846 continue;
847 }
848 if (!check_str_bytes(p, "zonesize", &td->zone_size)) {
849 fgetpos(f, &off);
850 continue;
851 }
852 if (!check_str_bytes(p, "zoneskip", &td->zone_skip)) {
853 fgetpos(f, &off);
854 continue;
855 }
856 if (!check_str_bytes(p, "lockmem", &mlock_size)) {
857 fgetpos(f, &off);
858 continue;
859 }
860 if (!check_strstore(p, "directory", tmpbuf)) {
861 td->directory = strdup(tmpbuf);
862 fgetpos(f, &off);
863 continue;
864 }
865 if (!check_strstore(p, "name", tmpbuf)) {
866 snprintf(td->name, sizeof(td->name)-1, "%s%d", tmpbuf, td->thread_number);
867 fgetpos(f, &off);
868 continue;
869 }
870 if (!check_str(p, "mem", str_mem_cb, td)) {
871 fgetpos(f, &off);
872 continue;
873 }
874 if (!check_str(p, "verify", str_verify_cb, td)) {
875 fgetpos(f, &off);
876 continue;
877 }
878 if (!check_str(p, "rw", str_rw_cb, td)) {
879 fgetpos(f, &off);
880 continue;
881 }
882 if (!check_str(p, "ioengine", str_ioengine_cb, td)) {
883 fgetpos(f, &off);
884 continue;
885 }
886 if (!check_strset(p, "create")) {
887 td->create_file = 1;
888 fgetpos(f, &off);
889 continue;
890 }
891 if (!check_strset(p, "exitall")) {
892 exitall_on_terminate = 1;
893 fgetpos(f, &off);
894 continue;
895 }
896 if (!check_strset(p, "stonewall")) {
897 td->stonewall = 1;
898 fgetpos(f, &off);
899 continue;
900 }
901 if (!check_strset(p, "thread")) {
902 td->use_thread = 1;
903 fgetpos(f, &off);
904 continue;
905 }
906 if (!check_strstore(p, "iolog", tmpbuf)) {
907 if (td->write_iolog) {
908 log_err("fio: read iolog overrides given write_iolog\n");
909 free(td->iolog_file);
910 td->write_iolog = 0;
911 }
912 td->iolog_file = strdup(tmpbuf);
913 td->read_iolog = 1;
914 fgetpos(f, &off);
915 continue;
916 }
917 if (!check_strstore(p, "write_iolog", tmpbuf)) {
918 if (!td->read_iolog) {
919 td->iolog_file = strdup(tmpbuf);
920 td->write_iolog = 1;
921 } else
922 log_err("fio: read iolog overrides given write_iolog\n");
923 fgetpos(f, &off);
924 continue;
925 }
926 if (!check_strstore(p, "exec_prerun", tmpbuf)) {
927 td->exec_prerun = strdup(tmpbuf);
928 fgetpos(f, &off);
929 continue;
930 }
931 if (!check_strstore(p, "exec_postrun", tmpbuf)) {
932 td->exec_postrun = strdup(tmpbuf);
933 fgetpos(f, &off);
934 continue;
935 }
936 if (!check_strstore(p, "ioscheduler", tmpbuf)) {
937#ifndef FIO_HAVE_IOSCHED_SWITCH
938 log_err("io scheduler switching not available\n");
939 ret = 1;
940 break;
941#else
942 td->ioscheduler = strdup(tmpbuf);
943 fgetpos(f, &off);
944 continue;
945#endif
946 }
947
948 /*
949 * Don't break here, continue parsing options so we
950 * dump all the bad ones. Makes trial/error fixups
951 * easier on the user.
952 */
953 printf("Client%d: bad option %s\n",td->thread_number,p);
954 ret = 1;
955 }
956
957 if (!ret) {
958 fsetpos(f, &off);
959 ret = add_job(td, name, 0);
960 }
961 if (ret)
962 break;
963 }
964
965 free(string);
966 free(name);
967 free(tmpbuf);
968 fclose(f);
969 return ret;
970}
971
972static int fill_def_thread(void)
973{
974 memset(&def_thread, 0, sizeof(def_thread));
975
976 if (fio_getaffinity(getpid(), &def_thread.cpumask) == -1) {
977 perror("sched_getaffinity");
978 return 1;
979 }
980
981 /*
982 * fill globals
983 */
984 def_thread.ddir = DDIR_READ;
985 def_thread.iomix = 0;
986 def_thread.bs = DEF_BS;
987 def_thread.min_bs = -1;
988 def_thread.max_bs = -1;
989 def_thread.odirect = DEF_ODIRECT;
990 def_thread.ratecycle = DEF_RATE_CYCLE;
991 def_thread.sequential = DEF_SEQUENTIAL;
992 def_thread.timeout = def_timeout;
993 def_thread.create_file = DEF_CREATE;
994 def_thread.overwrite = DEF_OVERWRITE;
995 def_thread.invalidate_cache = DEF_INVALIDATE;
996 def_thread.sync_io = DEF_SYNCIO;
997 def_thread.mem_type = MEM_MALLOC;
998 def_thread.bw_avg_time = DEF_BWAVGTIME;
999 def_thread.create_serialize = DEF_CREATE_SER;
1000 def_thread.create_fsync = DEF_CREATE_FSYNC;
1001 def_thread.loops = DEF_LOOPS;
1002 def_thread.verify = DEF_VERIFY;
1003 def_thread.stonewall = DEF_STONEWALL;
1004 def_thread.numjobs = DEF_NUMJOBS;
1005 def_thread.use_thread = DEF_USE_THREAD;
1006 def_thread.rwmixcycle = DEF_RWMIX_CYCLE;
1007 def_thread.rwmixread = DEF_RWMIX_READ;
1008 def_thread.nice = DEF_NICE;
1009 def_thread.rand_repeatable = DEF_RAND_REPEAT;
1010#ifdef FIO_HAVE_DISK_UTIL
1011 def_thread.do_disk_util = 1;
1012#endif
1013
1014 return 0;
1015}
1016
1017static void usage(char *name)
1018{
1019 printf("%s\n", fio_version_string);
1020 printf("\t-o Write output to file\n");
1021 printf("\t-t Runtime in seconds\n");
1022 printf("\t-l Generate per-job latency logs\n");
1023 printf("\t-w Generate per-job bandwidth logs\n");
1024 printf("\t-m Minimal (terse) output\n");
1025 printf("\t-v Print version info and exit\n");
1026}
1027
1028static int parse_cmd_line(int argc, char *argv[])
1029{
1030 int c, idx = 1, ini_idx = 0;
1031
1032 while ((c = getopt(argc, argv, "t:o:lwvhm")) != EOF) {
1033 switch (c) {
1034 case 't':
1035 def_timeout = atoi(optarg);
1036 idx = optind;
1037 break;
1038 case 'l':
1039 write_lat_log = 1;
1040 idx = optind;
1041 break;
1042 case 'w':
1043 write_bw_log = 1;
1044 idx = optind;
1045 break;
1046 case 'o':
1047 f_out = fopen(optarg, "w+");
1048 if (!f_out) {
1049 perror("fopen output");
1050 exit(1);
1051 }
1052 f_err = f_out;
1053 idx = optind;
1054 break;
1055 case 'm':
1056 terse_output = 1;
1057 idx = optind;
1058 break;
1059 case 'h':
1060 usage(argv[0]);
1061 exit(0);
1062 case 'v':
1063 printf("%s\n", fio_version_string);
1064 exit(0);
1065 }
1066 }
1067
1068 while (idx < argc) {
1069 ini_idx++;
1070 ini_file = realloc(ini_file, ini_idx * sizeof(char *));
1071 ini_file[ini_idx - 1] = strdup(argv[idx]);
1072 idx++;
1073 }
1074
1075 if (!f_out) {
1076 f_out = stdout;
1077 f_err = stderr;
1078 }
1079
1080 return ini_idx;
1081}
1082
1083static void free_shm(void)
1084{
1085 struct shmid_ds sbuf;
1086
1087 if (threads) {
1088 shmdt((void *) threads);
1089 threads = NULL;
1090 shmctl(shm_id, IPC_RMID, &sbuf);
1091 }
1092}
1093
1094/*
1095 * The thread area is shared between the main process and the job
1096 * threads/processes. So setup a shared memory segment that will hold
1097 * all the job info.
1098 */
1099static int setup_thread_area(void)
1100{
1101 /*
1102 * 1024 is too much on some machines, scale max_jobs if
1103 * we get a failure that looks like too large a shm segment
1104 */
1105 do {
1106 size_t size = max_jobs * sizeof(struct thread_data);
1107
1108 shm_id = shmget(0, size, IPC_CREAT | 0600);
1109 if (shm_id != -1)
1110 break;
1111 if (errno != EINVAL) {
1112 perror("shmget");
1113 break;
1114 }
1115
1116 max_jobs >>= 1;
1117 } while (max_jobs);
1118
1119 if (shm_id == -1)
1120 return 1;
1121
1122 threads = shmat(shm_id, NULL, 0);
1123 if (threads == (void *) -1) {
1124 perror("shmat");
1125 return 1;
1126 }
1127
1128 atexit(free_shm);
1129 return 0;
1130}
1131
1132int parse_options(int argc, char *argv[])
1133{
1134 int job_files, i;
1135
1136 if (setup_thread_area())
1137 return 1;
1138 if (fill_def_thread())
1139 return 1;
1140
1141 job_files = parse_cmd_line(argc, argv);
1142 if (!job_files) {
1143 log_err("Need job file(s)\n");
1144 usage(argv[0]);
1145 return 1;
1146 }
1147
1148 for (i = 0; i < job_files; i++) {
1149 if (fill_def_thread())
1150 return 1;
1151 if (parse_jobs_ini(ini_file[i], i))
1152 return 1;
1153 free(ini_file[i]);
1154 }
1155
1156 free(ini_file);
1157 return 0;
1158}
fio - Flexible IO Tester