[PATCH] Fixup iolog config setting
[fio.git] / init.c
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 <sys/ipc.h>
12 #include <sys/shm.h>
13 #include <sys/types.h>
14 #include <sys/stat.h>
15
16 #include "fio.h"
17 #include "parse.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_INVALIDATE          (1)
32 #define DEF_SYNCIO              (0)
33 #define DEF_RANDSEED            (0xb1899bedUL)
34 #define DEF_BWAVGTIME           (500)
35 #define DEF_CREATE_SER          (1)
36 #define DEF_CREATE_FSYNC        (1)
37 #define DEF_LOOPS               (1)
38 #define DEF_VERIFY              (0)
39 #define DEF_STONEWALL           (0)
40 #define DEF_NUMJOBS             (1)
41 #define DEF_USE_THREAD          (0)
42 #define DEF_FILE_SIZE           (1024 * 1024 * 1024UL)
43 #define DEF_ZONE_SIZE           (0)
44 #define DEF_ZONE_SKIP           (0)
45 #define DEF_RWMIX_CYCLE         (500)
46 #define DEF_RWMIX_READ          (50)
47 #define DEF_NICE                (0)
48 #define DEF_NR_FILES            (1)
49 #define DEF_UNLINK              (0)
50 #define DEF_WRITE_BW_LOG        (0)
51 #define DEF_WRITE_LAT_LOG       (0)
52
53 #define td_var_offset(var)      ((size_t) &((struct thread_data *)0)->var)
54
55 static int str_rw_cb(void *, char *);
56 static int str_ioengine_cb(void *, char *);
57 static int str_mem_cb(void *, char *);
58 static int str_verify_cb(void *, char *);
59 static int str_lockmem_cb(void *, unsigned long *);
60 static int str_prio_cb(void *, unsigned int *);
61 static int str_prioclass_cb(void *, unsigned int *);
62 static int str_exitall_cb(void);
63 static int str_cpumask_cb(void *, unsigned int *);
64
65 /*
66  * Map of job/command line options
67  */
68 static struct fio_option options[] = {
69         {
70                 .name   = "name",
71                 .type   = FIO_OPT_STR_STORE,
72                 .off1   = td_var_offset(name),
73         },
74         {
75                 .name   = "directory",
76                 .type   = FIO_OPT_STR_STORE,
77                 .off1   = td_var_offset(directory),
78         },
79         {
80                 .name   = "filename",
81                 .type   = FIO_OPT_STR_STORE,
82                 .off1   = td_var_offset(filename),
83         },
84         {
85                 .name   = "rw",
86                 .type   = FIO_OPT_STR,
87                 .cb     = str_rw_cb,
88         },
89         {
90                 .name   = "ioengine",
91                 .type   = FIO_OPT_STR,
92                 .cb     = str_ioengine_cb,
93         },
94         {
95                 .name   = "mem",
96                 .type   = FIO_OPT_STR,
97                 .cb     = str_mem_cb,
98         },
99         {
100                 .name   = "verify",
101                 .type   = FIO_OPT_STR,
102                 .cb     = str_verify_cb,
103         },
104         {
105                 .name   = "write_iolog",
106                 .type   = FIO_OPT_INT,
107                 .off1   = td_var_offset(write_iolog),
108         },
109         {
110                 .name   = "iolog",
111                 .type   = FIO_OPT_STR_STORE,
112                 .off1   = td_var_offset(iolog),
113         },
114         {
115                 .name   = "exec_prerun",
116                 .type   = FIO_OPT_STR_STORE,
117                 .off1   = td_var_offset(exec_prerun),
118         },
119         {
120                 .name   = "exec_postrun",
121                 .type   = FIO_OPT_STR_STORE,
122                 .off1   = td_var_offset(exec_postrun),
123         },
124 #ifdef FIO_HAVE_IOSCHED_SWITCH
125         {
126                 .name   = "ioscheduler",
127                 .type   = FIO_OPT_STR_STORE,
128                 .off1   = td_var_offset(ioscheduler),
129         },
130 #endif
131         {
132                 .name   = "size",
133                 .type   = FIO_OPT_STR_VAL,
134                 .off1   = td_var_offset(total_file_size),
135         },
136         {
137                 .name   = "bs",
138                 .type   = FIO_OPT_STR_VAL,
139                 .off1   = td_var_offset(bs),
140         },
141         {
142                 .name   = "offset",
143                 .type   = FIO_OPT_STR_VAL,
144                 .off1   = td_var_offset(start_offset),
145         },
146         {
147                 .name   = "zonesize",
148                 .type   = FIO_OPT_STR_VAL,
149                 .off1   = td_var_offset(zone_size),
150         },
151         {
152                 .name   = "zoneskip",
153                 .type   = FIO_OPT_STR_VAL,
154                 .off1   = td_var_offset(zone_skip),
155         },
156         {
157                 .name   = "lockmem",
158                 .type   = FIO_OPT_STR_VAL,
159                 .cb     = str_lockmem_cb,
160         },
161         {
162                 .name   = "bsrange",
163                 .type   = FIO_OPT_RANGE,
164                 .off1   = td_var_offset(min_bs),
165                 .off2   = td_var_offset(max_bs),
166         },
167         {
168                 .name   = "nrfiles",
169                 .type   = FIO_OPT_INT,
170                 .off1   = td_var_offset(nr_files),
171         },
172         {
173                 .name   = "iodepth",
174                 .type   = FIO_OPT_INT,
175                 .off1   = td_var_offset(iodepth),
176         },
177         {
178                 .name   = "fsync",
179                 .type   = FIO_OPT_INT,
180                 .off1   = td_var_offset(fsync_blocks),
181         },
182         {
183                 .name   = "rwmixcycle",
184                 .type   = FIO_OPT_INT,
185                 .off1   = td_var_offset(rwmixcycle),
186         },
187         {
188                 .name   = "rwmixread",
189                 .type   = FIO_OPT_INT,
190                 .off1   = td_var_offset(rwmixread),
191                 .max_val= 100,
192         },
193         {
194                 .name   = "rwmixwrite",
195                 .type   = FIO_OPT_INT,
196                 .off1   = td_var_offset(rwmixwrite),
197                 .max_val= 100,
198         },
199         {
200                 .name   = "nice",
201                 .type   = FIO_OPT_INT,
202                 .off1   = td_var_offset(nice),
203         },
204 #ifdef FIO_HAVE_IOPRIO
205         {
206                 .name   = "prio",
207                 .type   = FIO_OPT_INT,
208                 .cb     = str_prio_cb,
209         },
210         {
211                 .name   = "prioclass",
212                 .type   = FIO_OPT_INT,
213                 .cb     = str_prioclass_cb,
214         },
215 #endif
216         {
217                 .name   = "thinktime",
218                 .type   = FIO_OPT_INT,
219                 .off1   = td_var_offset(thinktime)
220         },
221         {
222                 .name   = "rate",
223                 .type   = FIO_OPT_INT,
224                 .off1   = td_var_offset(rate)
225         },
226         {
227                 .name   = "ratemin",
228                 .type   = FIO_OPT_INT,
229                 .off1   = td_var_offset(ratemin)
230         },
231         {
232                 .name   = "ratecycle",
233                 .type   = FIO_OPT_INT,
234                 .off1   = td_var_offset(ratecycle)
235         },
236         {
237                 .name   = "startdelay",
238                 .type   = FIO_OPT_INT,
239                 .off1   = td_var_offset(start_delay)
240         },
241         {
242                 .name   = "timeout",
243                 .type   = FIO_OPT_STR_VAL_TIME,
244                 .off1   = td_var_offset(timeout)
245         },
246         {
247                 .name   = "invalidate",
248                 .type   = FIO_OPT_INT,
249                 .off1   = td_var_offset(invalidate_cache)
250         },
251         {
252                 .name   = "sync",
253                 .type   = FIO_OPT_INT,
254                 .off1   = td_var_offset(sync_io)
255         },
256         {
257                 .name   = "bwavgtime",
258                 .type   = FIO_OPT_INT,
259                 .off1   = td_var_offset(bw_avg_time)
260         },
261         {
262                 .name   = "create_serialize",
263                 .type   = FIO_OPT_INT,
264                 .off1   = td_var_offset(create_serialize)
265         },
266         {
267                 .name   = "create_fsync",
268                 .type   = FIO_OPT_INT,
269                 .off1   = td_var_offset(create_fsync)
270         },
271         {
272                 .name   = "loops",
273                 .type   = FIO_OPT_INT,
274                 .off1   = td_var_offset(loops)
275         },
276         {
277                 .name   = "numjobs",
278                 .type   = FIO_OPT_INT,
279                 .off1   = td_var_offset(numjobs)
280         },
281         {
282                 .name   = "cpuload",
283                 .type   = FIO_OPT_INT,
284                 .off1   = td_var_offset(cpuload)
285         },
286         {
287                 .name   = "cpuchunks",
288                 .type   = FIO_OPT_INT,
289                 .off1   = td_var_offset(cpucycle)
290         },
291         {
292                 .name   = "direct",
293                 .type   = FIO_OPT_INT,
294                 .off1   = td_var_offset(odirect)
295         },
296         {
297                 .name   = "overwrite",
298                 .type   = FIO_OPT_INT,
299                 .off1   = td_var_offset(overwrite)
300         },
301 #ifdef FIO_HAVE_CPU_AFFINITY
302         {
303                 .name   = "cpumask",
304                 .type   = FIO_OPT_INT,
305                 .cb     = str_cpumask_cb,
306         },
307 #endif
308         {
309                 .name   = "end_fsync",
310                 .type   = FIO_OPT_INT,
311                 .off1   = td_var_offset(end_fsync)
312         },
313         {
314                 .name   = "unlink",
315                 .type   = FIO_OPT_STR_SET,
316                 .off1   = td_var_offset(unlink),
317         },
318         {
319                 .name   = "exitall",
320                 .type   = FIO_OPT_STR_SET,
321                 .cb     = str_exitall_cb,
322         },
323         {
324                 .name   = "stonewall",
325                 .type   = FIO_OPT_STR_SET,
326                 .off1   = td_var_offset(stonewall),
327         },
328         {
329                 .name   = "thread",
330                 .type   = FIO_OPT_STR_SET,
331                 .off1   = td_var_offset(thread),
332         },
333         {
334                 .name   = "write_bw_log",
335                 .type   = FIO_OPT_STR_SET,
336                 .off1   = td_var_offset(write_bw_log),
337         },
338         {
339                 .name   = "write_lat_log",
340                 .type   = FIO_OPT_STR_SET,
341                 .off1   = td_var_offset(write_lat_log),
342         },
343         {
344                 .name = NULL,
345         },
346 };
347
348 static int def_timeout = DEF_TIMEOUT;
349
350 static char fio_version_string[] = "fio 1.5";
351
352 static char **ini_file;
353 static int max_jobs = MAX_JOBS;
354
355 struct thread_data def_thread;
356 struct thread_data *threads = NULL;
357
358 int rate_quit = 0;
359 int exitall_on_terminate = 0;
360 int terse_output = 0;
361 unsigned long long mlock_size = 0;
362 FILE *f_out = NULL;
363 FILE *f_err = NULL;
364
365 static int write_lat_log = DEF_WRITE_LAT_LOG;
366 static int write_bw_log = DEF_WRITE_BW_LOG;
367
368 /*
369  * Return a free job structure.
370  */
371 static struct thread_data *get_new_job(int global, struct thread_data *parent)
372 {
373         struct thread_data *td;
374
375         if (global)
376                 return &def_thread;
377         if (thread_number >= max_jobs)
378                 return NULL;
379
380         td = &threads[thread_number++];
381         *td = *parent;
382         td->name[0] = '\0';
383
384         td->thread_number = thread_number;
385         return td;
386 }
387
388 static void put_job(struct thread_data *td)
389 {
390         memset(&threads[td->thread_number - 1], 0, sizeof(*td));
391         thread_number--;
392 }
393
394 /*
395  * Lazy way of fixing up options that depend on each other. We could also
396  * define option callback handlers, but this is easier.
397  */
398 static void fixup_options(struct thread_data *td)
399 {
400         if (!td->min_bs)
401                 td->min_bs = td->bs;
402         if (!td->max_bs)
403                 td->max_bs = td->bs;
404
405         if (!td->rwmixread && td->rwmixwrite)
406                 td->rwmixread = 100 - td->rwmixwrite;
407
408         if (td->iolog && !td->write_iolog)
409                 td->read_iolog = 1;
410 }
411
412 /*
413  * Adds a job to the list of things todo. Sanitizes the various options
414  * to make sure we don't have conflicts, and initializes various
415  * members of td.
416  */
417 static int add_job(struct thread_data *td, const char *jobname, int job_add_num)
418 {
419         char *ddir_str[] = { "read", "write", "randread", "randwrite",
420                              "rw", NULL, "randrw" };
421         struct stat sb;
422         int numjobs, ddir, i;
423         struct fio_file *f;
424
425 #ifndef FIO_HAVE_LIBAIO
426         if (td->io_engine == FIO_LIBAIO) {
427                 log_err("Linux libaio not available\n");
428                 return 1;
429         }
430 #endif
431 #ifndef FIO_HAVE_POSIXAIO
432         if (td->io_engine == FIO_POSIXAIO) {
433                 log_err("posix aio not available\n");
434                 return 1;
435         }
436 #endif
437
438         fixup_options(td);
439
440         /*
441          * the def_thread is just for options, it's not a real job
442          */
443         if (td == &def_thread)
444                 return 0;
445
446         /*
447          * Set default io engine, if none set
448          */
449         if (!td->io_ops) {
450                 td->io_ops = load_ioengine(td, DEF_IO_ENGINE_NAME);
451                 if (!td->io_ops) {
452                         log_err("default engine %s not there?\n", DEF_IO_ENGINE_NAME);
453                         return 1;
454                 }
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         td->filetype = FIO_TYPE_FILE;
477         if (!stat(jobname, &sb)) {
478                 if (S_ISBLK(sb.st_mode))
479                         td->filetype = FIO_TYPE_BD;
480                 else if (S_ISCHR(sb.st_mode))
481                         td->filetype = FIO_TYPE_CHAR;
482         }
483
484         if (td->odirect)
485                 td->io_ops->flags |= FIO_RAWIO;
486
487         if (td->filename)
488                 td->nr_uniq_files = 1;
489         else
490                 td->nr_uniq_files = td->nr_files;
491
492         if (td->filetype == FIO_TYPE_FILE || td->filename) {
493                 char tmp[PATH_MAX];
494                 int len = 0;
495                 int i;
496
497                 if (td->directory && td->directory[0] != '\0')
498                         sprintf(tmp, "%s/", td->directory);
499
500                 td->files = malloc(sizeof(struct fio_file) * td->nr_files);
501
502                 for_each_file(td, f, i) {
503                         memset(f, 0, sizeof(*f));
504                         f->fd = -1;
505
506                         if (td->filename)
507                                 sprintf(tmp + len, "%s", td->filename);
508                         else
509                                 sprintf(tmp + len, "%s.%d.%d", jobname, td->thread_number, i);
510                         f->file_name = strdup(tmp);
511                 }
512         } else {
513                 td->nr_files = 1;
514                 td->files = malloc(sizeof(struct fio_file));
515                 f = &td->files[0];
516
517                 memset(f, 0, sizeof(*f));
518                 f->fd = -1;
519                 f->file_name = strdup(jobname);
520         }
521
522         for_each_file(td, f, i) {
523                 f->file_size = td->total_file_size / td->nr_files;
524                 f->file_offset = td->start_offset;
525         }
526                 
527         fio_sem_init(&td->mutex, 0);
528
529         td->clat_stat[0].min_val = td->clat_stat[1].min_val = ULONG_MAX;
530         td->slat_stat[0].min_val = td->slat_stat[1].min_val = ULONG_MAX;
531         td->bw_stat[0].min_val = td->bw_stat[1].min_val = ULONG_MAX;
532
533         if (td->min_bs == -1U)
534                 td->min_bs = td->bs;
535         if (td->max_bs == -1U)
536                 td->max_bs = td->bs;
537         if (td_read(td) && !td_rw(td))
538                 td->verify = 0;
539
540         if (td->stonewall && td->thread_number > 1)
541                 groupid++;
542
543         td->groupid = groupid;
544
545         if (setup_rate(td))
546                 goto err;
547
548         if (td->write_lat_log) {
549                 setup_log(&td->slat_log);
550                 setup_log(&td->clat_log);
551         }
552         if (td->write_bw_log)
553                 setup_log(&td->bw_log);
554
555         if (td->name[0] == '\0')
556                 snprintf(td->name, sizeof(td->name)-1, "client%d", td->thread_number);
557
558         ddir = td->ddir + (!td->sequential << 1) + (td->iomix << 2);
559
560         if (!terse_output) {
561                 if (!job_add_num) {
562                         if (td->io_ops->flags & FIO_CPUIO)
563                                 fprintf(f_out, "%s: ioengine=cpu, cpuload=%u, cpucycle=%u\n", td->name, td->cpuload, td->cpucycle);
564                         else
565                                 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);
566                 } else if (job_add_num == 1)
567                         fprintf(f_out, "...\n");
568         }
569
570         /*
571          * recurse add identical jobs, clear numjobs and stonewall options
572          * as they don't apply to sub-jobs
573          */
574         numjobs = td->numjobs;
575         while (--numjobs) {
576                 struct thread_data *td_new = get_new_job(0, td);
577
578                 if (!td_new)
579                         goto err;
580
581                 td_new->numjobs = 1;
582                 td_new->stonewall = 0;
583                 job_add_num = numjobs - 1;
584
585                 if (add_job(td_new, jobname, job_add_num))
586                         goto err;
587         }
588         return 0;
589 err:
590         put_job(td);
591         return -1;
592 }
593
594 /*
595  * Initialize the various random states we need (random io, block size ranges,
596  * read/write mix, etc).
597  */
598 int init_random_state(struct thread_data *td)
599 {
600         unsigned long seeds[4];
601         int fd, num_maps, blocks, i;
602         struct fio_file *f;
603
604         fd = open("/dev/urandom", O_RDONLY);
605         if (fd == -1) {
606                 td_verror(td, errno);
607                 return 1;
608         }
609
610         if (read(fd, seeds, sizeof(seeds)) < (int) sizeof(seeds)) {
611                 td_verror(td, EIO);
612                 close(fd);
613                 return 1;
614         }
615
616         close(fd);
617
618         os_random_seed(seeds[0], &td->bsrange_state);
619         os_random_seed(seeds[1], &td->verify_state);
620         os_random_seed(seeds[2], &td->rwmix_state);
621
622         if (td->sequential)
623                 return 0;
624
625         if (td->rand_repeatable)
626                 seeds[3] = DEF_RANDSEED;
627
628         for_each_file(td, f, i) {
629                 blocks = (f->file_size + td->min_bs - 1) / td->min_bs;
630                 num_maps = blocks / BLOCKS_PER_MAP;
631                 f->file_map = malloc(num_maps * sizeof(long));
632                 f->num_maps = num_maps;
633                 memset(f->file_map, 0, num_maps * sizeof(long));
634         }
635
636         os_random_seed(seeds[3], &td->random_state);
637         return 0;
638 }
639
640 static void fill_cpu_mask(os_cpu_mask_t cpumask, int cpu)
641 {
642 #ifdef FIO_HAVE_CPU_AFFINITY
643         unsigned int i;
644
645         CPU_ZERO(&cpumask);
646
647         for (i = 0; i < sizeof(int) * 8; i++) {
648                 if ((1 << i) & cpu)
649                         CPU_SET(i, &cpumask);
650         }
651 #endif
652 }
653
654 static int is_empty_or_comment(char *line)
655 {
656         unsigned int i;
657
658         for (i = 0; i < strlen(line); i++) {
659                 if (line[i] == ';')
660                         return 1;
661                 if (!isspace(line[i]) && !iscntrl(line[i]))
662                         return 0;
663         }
664
665         return 1;
666 }
667
668 static int str_rw_cb(void *data, char *mem)
669 {
670         struct thread_data *td = data;
671
672         if (!strncmp(mem, "read", 4) || !strncmp(mem, "0", 1)) {
673                 td->ddir = DDIR_READ;
674                 td->sequential = 1;
675                 return 0;
676         } else if (!strncmp(mem, "randread", 8)) {
677                 td->ddir = DDIR_READ;
678                 td->sequential = 0;
679                 return 0;
680         } else if (!strncmp(mem, "write", 5) || !strncmp(mem, "1", 1)) {
681                 td->ddir = DDIR_WRITE;
682                 td->sequential = 1;
683                 return 0;
684         } else if (!strncmp(mem, "randwrite", 9)) {
685                 td->ddir = DDIR_WRITE;
686                 td->sequential = 0;
687                 return 0;
688         } else if (!strncmp(mem, "rw", 2)) {
689                 td->ddir = 0;
690                 td->iomix = 1;
691                 td->sequential = 1;
692                 return 0;
693         } else if (!strncmp(mem, "randrw", 6)) {
694                 td->ddir = 0;
695                 td->iomix = 1;
696                 td->sequential = 0;
697                 return 0;
698         }
699
700         log_err("fio: data direction: read, write, randread, randwrite, rw, randrw\n");
701         return 1;
702 }
703
704 static int str_verify_cb(void *data, char *mem)
705 {
706         struct thread_data *td = data;
707
708         if (!strncmp(mem, "0", 1)) {
709                 td->verify = VERIFY_NONE;
710                 return 0;
711         } else if (!strncmp(mem, "md5", 3) || !strncmp(mem, "1", 1)) {
712                 td->verify = VERIFY_MD5;
713                 return 0;
714         } else if (!strncmp(mem, "crc32", 5)) {
715                 td->verify = VERIFY_CRC32;
716                 return 0;
717         }
718
719         log_err("fio: verify types: md5, crc32\n");
720         return 1;
721 }
722
723 static int str_mem_cb(void *data, char *mem)
724 {
725         struct thread_data *td = data;
726
727         if (!strncmp(mem, "malloc", 6)) {
728                 td->mem_type = MEM_MALLOC;
729                 return 0;
730         } else if (!strncmp(mem, "shm", 3)) {
731                 td->mem_type = MEM_SHM;
732                 return 0;
733         } else if (!strncmp(mem, "mmap", 4)) {
734                 td->mem_type = MEM_MMAP;
735                 return 0;
736         }
737
738         log_err("fio: mem type: malloc, shm, mmap\n");
739         return 1;
740 }
741
742 static int str_ioengine_cb(void *data, char *str)
743 {
744         struct thread_data *td = data;
745
746         td->io_ops = load_ioengine(td, str);
747         if (td->io_ops)
748                 return 0;
749
750         log_err("fio: ioengine: { linuxaio, aio, libaio }, posixaio, sync, mmap, sgio, splice, cpu\n");
751         return 1;
752 }
753
754 static int str_lockmem_cb(void fio_unused *data, unsigned long *val)
755 {
756         mlock_size = *val;
757         return 0;
758 }
759
760 static int str_prioclass_cb(void *data, unsigned int *val)
761 {
762         struct thread_data *td = data;
763
764         td->ioprio |= *val << IOPRIO_CLASS_SHIFT;
765         return 0;
766 }
767
768 static int str_prio_cb(void *data, unsigned int *val)
769 {
770         struct thread_data *td = data;
771
772         td->ioprio |= *val;
773         return 0;
774 }
775
776 static int str_exitall_cb(void)
777 {
778         exitall_on_terminate = 1;
779         return 0;
780 }
781
782 static int str_cpumask_cb(void *data, unsigned int *val)
783 {
784         struct thread_data *td = data;
785
786         fill_cpu_mask(td->cpumask, *val);
787         return 0;
788 }
789
790 /*
791  * This is our [ini] type file parser.
792  */
793 int parse_jobs_ini(char *file, int stonewall_flag)
794 {
795         unsigned int global;
796         struct thread_data *td;
797         char *string, *name, *tmpbuf;
798         fpos_t off;
799         FILE *f;
800         char *p;
801         int ret = 0, stonewall;
802
803         f = fopen(file, "r");
804         if (!f) {
805                 perror("fopen job file");
806                 return 1;
807         }
808
809         string = malloc(4096);
810         name = malloc(256);
811         tmpbuf = malloc(4096);
812
813         stonewall = stonewall_flag;
814         while ((p = fgets(string, 4096, f)) != NULL) {
815                 if (ret)
816                         break;
817                 if (is_empty_or_comment(p))
818                         continue;
819                 if (sscanf(p, "[%s]", name) != 1)
820                         continue;
821
822                 global = !strncmp(name, "global", 6);
823
824                 name[strlen(name) - 1] = '\0';
825
826                 td = get_new_job(global, &def_thread);
827                 if (!td) {
828                         ret = 1;
829                         break;
830                 }
831
832                 /*
833                  * Seperate multiple job files by a stonewall
834                  */
835                 if (!global && stonewall) {
836                         td->stonewall = stonewall;
837                         stonewall = 0;
838                 }
839
840                 fgetpos(f, &off);
841                 while ((p = fgets(string, 4096, f)) != NULL) {
842                         if (is_empty_or_comment(p))
843                                 continue;
844                         if (strstr(p, "["))
845                                 break;
846
847                         strip_blank_front(&p);
848                         strip_blank_end(p);
849
850                         fgetpos(f, &off);
851
852                         /*
853                          * Don't break here, continue parsing options so we
854                          * dump all the bad ones. Makes trial/error fixups
855                          * easier on the user.
856                          */
857                         ret = parse_option(p, options, td);
858                 }
859
860                 if (!ret) {
861                         fsetpos(f, &off);
862                         ret = add_job(td, name, 0);
863                 }
864                 if (ret)
865                         break;
866         }
867
868         free(string);
869         free(name);
870         free(tmpbuf);
871         fclose(f);
872         return ret;
873 }
874
875 static int fill_def_thread(void)
876 {
877         memset(&def_thread, 0, sizeof(def_thread));
878
879         if (fio_getaffinity(getpid(), &def_thread.cpumask) == -1) {
880                 perror("sched_getaffinity");
881                 return 1;
882         }
883
884         /*
885          * fill globals
886          */
887         def_thread.ddir = DDIR_READ;
888         def_thread.iomix = 0;
889         def_thread.bs = DEF_BS;
890         def_thread.min_bs = -1;
891         def_thread.max_bs = -1;
892         def_thread.odirect = DEF_ODIRECT;
893         def_thread.ratecycle = DEF_RATE_CYCLE;
894         def_thread.sequential = DEF_SEQUENTIAL;
895         def_thread.timeout = def_timeout;
896         def_thread.overwrite = DEF_OVERWRITE;
897         def_thread.invalidate_cache = DEF_INVALIDATE;
898         def_thread.sync_io = DEF_SYNCIO;
899         def_thread.mem_type = MEM_MALLOC;
900         def_thread.bw_avg_time = DEF_BWAVGTIME;
901         def_thread.create_serialize = DEF_CREATE_SER;
902         def_thread.create_fsync = DEF_CREATE_FSYNC;
903         def_thread.loops = DEF_LOOPS;
904         def_thread.verify = DEF_VERIFY;
905         def_thread.stonewall = DEF_STONEWALL;
906         def_thread.numjobs = DEF_NUMJOBS;
907         def_thread.use_thread = DEF_USE_THREAD;
908         def_thread.rwmixcycle = DEF_RWMIX_CYCLE;
909         def_thread.rwmixread = DEF_RWMIX_READ;
910         def_thread.nice = DEF_NICE;
911         def_thread.rand_repeatable = DEF_RAND_REPEAT;
912         def_thread.nr_files = DEF_NR_FILES;
913         def_thread.unlink = DEF_UNLINK;
914         def_thread.write_bw_log = write_bw_log;
915         def_thread.write_lat_log = write_lat_log;
916 #ifdef FIO_HAVE_DISK_UTIL
917         def_thread.do_disk_util = 1;
918 #endif
919
920         return 0;
921 }
922
923 static void usage(void)
924 {
925         printf("%s\n", fio_version_string);
926         printf("\t-o Write output to file\n");
927         printf("\t-t Runtime in seconds\n");
928         printf("\t-l Generate per-job latency logs\n");
929         printf("\t-w Generate per-job bandwidth logs\n");
930         printf("\t-m Minimal (terse) output\n");
931         printf("\t-v Print version info and exit\n");
932 }
933
934 static int parse_cmd_line(int argc, char *argv[])
935 {
936         int c, idx = 1, ini_idx = 0;
937
938         while ((c = getopt(argc, argv, "t:o:lwvhm")) != EOF) {
939                 switch (c) {
940                         case 't':
941                                 def_timeout = atoi(optarg);
942                                 idx = optind;
943                                 break;
944                         case 'l':
945                                 write_lat_log = 1;
946                                 idx = optind;
947                                 break;
948                         case 'w':
949                                 write_bw_log = 1;
950                                 idx = optind;
951                                 break;
952                         case 'o':
953                                 f_out = fopen(optarg, "w+");
954                                 if (!f_out) {
955                                         perror("fopen output");
956                                         exit(1);
957                                 }
958                                 f_err = f_out;
959                                 idx = optind;
960                                 break;
961                         case 'm':
962                                 terse_output = 1;
963                                 idx = optind;
964                                 break;
965                         case 'h':
966                                 usage();
967                                 exit(0);
968                         case 'v':
969                                 printf("%s\n", fio_version_string);
970                                 exit(0);
971                 }
972         }
973
974         while (idx < argc) {
975                 ini_idx++;
976                 ini_file = realloc(ini_file, ini_idx * sizeof(char *));
977                 ini_file[ini_idx - 1] = strdup(argv[idx]);
978                 idx++;
979         }
980
981         if (!f_out) {
982                 f_out = stdout;
983                 f_err = stderr;
984         }
985
986         return ini_idx;
987 }
988
989 static void free_shm(void)
990 {
991         struct shmid_ds sbuf;
992
993         if (threads) {
994                 shmdt((void *) threads);
995                 threads = NULL;
996                 shmctl(shm_id, IPC_RMID, &sbuf);
997         }
998 }
999
1000 /*
1001  * The thread area is shared between the main process and the job
1002  * threads/processes. So setup a shared memory segment that will hold
1003  * all the job info.
1004  */
1005 static int setup_thread_area(void)
1006 {
1007         /*
1008          * 1024 is too much on some machines, scale max_jobs if
1009          * we get a failure that looks like too large a shm segment
1010          */
1011         do {
1012                 size_t size = max_jobs * sizeof(struct thread_data);
1013
1014                 shm_id = shmget(0, size, IPC_CREAT | 0600);
1015                 if (shm_id != -1)
1016                         break;
1017                 if (errno != EINVAL) {
1018                         perror("shmget");
1019                         break;
1020                 }
1021
1022                 max_jobs >>= 1;
1023         } while (max_jobs);
1024
1025         if (shm_id == -1)
1026                 return 1;
1027
1028         threads = shmat(shm_id, NULL, 0);
1029         if (threads == (void *) -1) {
1030                 perror("shmat");
1031                 return 1;
1032         }
1033
1034         atexit(free_shm);
1035         return 0;
1036 }
1037
1038 int parse_options(int argc, char *argv[])
1039 {
1040         int job_files, i;
1041
1042         if (setup_thread_area())
1043                 return 1;
1044         if (fill_def_thread())
1045                 return 1;
1046
1047         job_files = parse_cmd_line(argc, argv);
1048         if (!job_files) {
1049                 log_err("Need job file(s)\n");
1050                 usage();
1051                 return 1;
1052         }
1053
1054         for (i = 0; i < job_files; i++) {
1055                 if (fill_def_thread())
1056                         return 1;
1057                 if (parse_jobs_ini(ini_file[i], i))
1058                         return 1;
1059                 free(ini_file[i]);
1060         }
1061
1062         free(ini_file);
1063         return 0;
1064 }