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