689c495b6ac648059a513c325d92620b7bd82beb
[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 <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
58 static int str_rw_cb(void *, const char *);
59 static int str_ioengine_cb(void *, const char *);
60 static int str_mem_cb(void *, const char *);
61 static int str_verify_cb(void *, const char *);
62 static int str_lockmem_cb(void *, unsigned long *);
63 static int str_prio_cb(void *, unsigned int *);
64 static int str_prioclass_cb(void *, unsigned int *);
65 static int str_exitall_cb(void);
66 static int str_cpumask_cb(void *, unsigned int *);
67
68 /*
69  * Map of job/command line options
70  */
71 static 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_INT,
142                 .off1   = td_var_offset(bs[DDIR_READ]),
143         },
144         {
145                 .name   = "read_bs",
146                 .type   = FIO_OPT_STR_VAL_INT,
147                 .off1   = td_var_offset(bs[DDIR_READ]),
148         },
149         {
150                 .name   = "write_bs",
151                 .type   = FIO_OPT_STR_VAL_INT,
152                 .off1   = td_var_offset(bs[DDIR_WRITE]),
153         },
154         {
155                 .name   = "offset",
156                 .type   = FIO_OPT_STR_VAL,
157                 .off1   = td_var_offset(start_offset),
158         },
159         {
160                 .name   = "zonesize",
161                 .type   = FIO_OPT_STR_VAL,
162                 .off1   = td_var_offset(zone_size),
163         },
164         {
165                 .name   = "zoneskip",
166                 .type   = FIO_OPT_STR_VAL,
167                 .off1   = td_var_offset(zone_skip),
168         },
169         {
170                 .name   = "lockmem",
171                 .type   = FIO_OPT_STR_VAL,
172                 .cb     = str_lockmem_cb,
173         },
174         {
175                 .name   = "bsrange",
176                 .type   = FIO_OPT_RANGE,
177                 .off1   = td_var_offset(min_bs[DDIR_READ]),
178                 .off2   = td_var_offset(max_bs[DDIR_READ]),
179         },
180         {
181                 .name   = "read_bsrange",
182                 .type   = FIO_OPT_RANGE,
183                 .off1   = td_var_offset(min_bs[DDIR_READ]),
184                 .off2   = td_var_offset(max_bs[DDIR_READ]),
185         },
186         {
187                 .name   = "write_bsrange",
188                 .type   = FIO_OPT_RANGE,
189                 .off1   = td_var_offset(min_bs[DDIR_WRITE]),
190                 .off2   = td_var_offset(max_bs[DDIR_WRITE]),
191         },
192         {
193                 .name   = "nrfiles",
194                 .type   = FIO_OPT_INT,
195                 .off1   = td_var_offset(nr_files),
196         },
197         {
198                 .name   = "iodepth",
199                 .type   = FIO_OPT_INT,
200                 .off1   = td_var_offset(iodepth),
201         },
202         {
203                 .name   = "fsync",
204                 .type   = FIO_OPT_INT,
205                 .off1   = td_var_offset(fsync_blocks),
206         },
207         {
208                 .name   = "rwmixcycle",
209                 .type   = FIO_OPT_INT,
210                 .off1   = td_var_offset(rwmixcycle),
211         },
212         {
213                 .name   = "rwmixread",
214                 .type   = FIO_OPT_INT,
215                 .off1   = td_var_offset(rwmixread),
216                 .max_val= 100,
217         },
218         {
219                 .name   = "rwmixwrite",
220                 .type   = FIO_OPT_INT,
221                 .off1   = td_var_offset(rwmixwrite),
222                 .max_val= 100,
223         },
224         {
225                 .name   = "nice",
226                 .type   = FIO_OPT_INT,
227                 .off1   = td_var_offset(nice),
228         },
229 #ifdef FIO_HAVE_IOPRIO
230         {
231                 .name   = "prio",
232                 .type   = FIO_OPT_INT,
233                 .cb     = str_prio_cb,
234         },
235         {
236                 .name   = "prioclass",
237                 .type   = FIO_OPT_INT,
238                 .cb     = str_prioclass_cb,
239         },
240 #endif
241         {
242                 .name   = "thinktime",
243                 .type   = FIO_OPT_INT,
244                 .off1   = td_var_offset(thinktime)
245         },
246         {
247                 .name   = "rate",
248                 .type   = FIO_OPT_INT,
249                 .off1   = td_var_offset(rate)
250         },
251         {
252                 .name   = "ratemin",
253                 .type   = FIO_OPT_INT,
254                 .off1   = td_var_offset(ratemin)
255         },
256         {
257                 .name   = "ratecycle",
258                 .type   = FIO_OPT_INT,
259                 .off1   = td_var_offset(ratecycle)
260         },
261         {
262                 .name   = "startdelay",
263                 .type   = FIO_OPT_INT,
264                 .off1   = td_var_offset(start_delay)
265         },
266         {
267                 .name   = "timeout",
268                 .type   = FIO_OPT_STR_VAL_TIME,
269                 .off1   = td_var_offset(timeout)
270         },
271         {
272                 .name   = "invalidate",
273                 .type   = FIO_OPT_INT,
274                 .off1   = td_var_offset(invalidate_cache)
275         },
276         {
277                 .name   = "sync",
278                 .type   = FIO_OPT_INT,
279                 .off1   = td_var_offset(sync_io)
280         },
281         {
282                 .name   = "bwavgtime",
283                 .type   = FIO_OPT_INT,
284                 .off1   = td_var_offset(bw_avg_time)
285         },
286         {
287                 .name   = "create_serialize",
288                 .type   = FIO_OPT_INT,
289                 .off1   = td_var_offset(create_serialize)
290         },
291         {
292                 .name   = "create_fsync",
293                 .type   = FIO_OPT_INT,
294                 .off1   = td_var_offset(create_fsync)
295         },
296         {
297                 .name   = "loops",
298                 .type   = FIO_OPT_INT,
299                 .off1   = td_var_offset(loops)
300         },
301         {
302                 .name   = "numjobs",
303                 .type   = FIO_OPT_INT,
304                 .off1   = td_var_offset(numjobs)
305         },
306         {
307                 .name   = "cpuload",
308                 .type   = FIO_OPT_INT,
309                 .off1   = td_var_offset(cpuload)
310         },
311         {
312                 .name   = "cpuchunks",
313                 .type   = FIO_OPT_INT,
314                 .off1   = td_var_offset(cpucycle)
315         },
316         {
317                 .name   = "direct",
318                 .type   = FIO_OPT_INT,
319                 .off1   = td_var_offset(odirect)
320         },
321         {
322                 .name   = "overwrite",
323                 .type   = FIO_OPT_INT,
324                 .off1   = td_var_offset(overwrite)
325         },
326 #ifdef FIO_HAVE_CPU_AFFINITY
327         {
328                 .name   = "cpumask",
329                 .type   = FIO_OPT_INT,
330                 .cb     = str_cpumask_cb,
331         },
332 #endif
333         {
334                 .name   = "end_fsync",
335                 .type   = FIO_OPT_INT,
336                 .off1   = td_var_offset(end_fsync)
337         },
338         {
339                 .name   = "unlink",
340                 .type   = FIO_OPT_STR_SET,
341                 .off1   = td_var_offset(unlink),
342         },
343         {
344                 .name   = "exitall",
345                 .type   = FIO_OPT_STR_SET,
346                 .cb     = str_exitall_cb,
347         },
348         {
349                 .name   = "stonewall",
350                 .type   = FIO_OPT_STR_SET,
351                 .off1   = td_var_offset(stonewall),
352         },
353         {
354                 .name   = "thread",
355                 .type   = FIO_OPT_STR_SET,
356                 .off1   = td_var_offset(thread),
357         },
358         {
359                 .name   = "write_bw_log",
360                 .type   = FIO_OPT_STR_SET,
361                 .off1   = td_var_offset(write_bw_log),
362         },
363         {
364                 .name   = "write_lat_log",
365                 .type   = FIO_OPT_STR_SET,
366                 .off1   = td_var_offset(write_lat_log),
367         },
368         {
369                 .name   = "norandommap",
370                 .type   = FIO_OPT_STR_SET,
371                 .off1   = td_var_offset(norandommap),
372         },
373         {
374                 .name   = "bs_unaligned",
375                 .type   = FIO_OPT_STR_SET,
376                 .off1   = td_var_offset(bs_unaligned),
377         },
378         {
379                 .name = NULL,
380         },
381 };
382
383 #define FIO_JOB_OPTS    (sizeof(options) / sizeof(struct fio_option))
384 #define FIO_CMD_OPTS    (16)
385 #define FIO_GETOPT_JOB  (0x89988998)
386
387 /*
388  * Command line options. These will contain the above, plus a few
389  * extra that only pertain to fio itself and not jobs.
390  */
391 static struct option long_options[FIO_JOB_OPTS + FIO_CMD_OPTS] = {
392         {
393                 .name           = "output",
394                 .has_arg        = required_argument,
395                 .val            = 'o',
396         },
397         {
398                 .name           = "timeout",
399                 .has_arg        = required_argument,
400                 .val            = 't',
401         },
402         {
403                 .name           = "latency-log",
404                 .has_arg        = required_argument,
405                 .val            = 'l',
406         },
407         {
408                 .name           = "bandwidth-log",
409                 .has_arg        = required_argument,
410                 .val            = 'b',
411         },
412         {
413                 .name           = "minimal",
414                 .has_arg        = optional_argument,
415                 .val            = 'm',
416         },
417         {
418                 .name           = "version",
419                 .has_arg        = no_argument,
420                 .val            = 'v',
421         },
422         {
423                 .name           = NULL,
424         },
425 };
426
427 static int def_timeout = DEF_TIMEOUT;
428
429 static char fio_version_string[] = "fio 1.7";
430
431 static char **ini_file;
432 static int max_jobs = MAX_JOBS;
433
434 struct thread_data def_thread;
435 struct thread_data *threads = NULL;
436
437 int rate_quit = 0;
438 int exitall_on_terminate = 0;
439 int terse_output = 0;
440 unsigned long long mlock_size = 0;
441 FILE *f_out = NULL;
442 FILE *f_err = NULL;
443
444 static int write_lat_log = DEF_WRITE_LAT_LOG;
445 static int write_bw_log = DEF_WRITE_BW_LOG;
446
447 /*
448  * Return a free job structure.
449  */
450 static struct thread_data *get_new_job(int global, struct thread_data *parent)
451 {
452         struct thread_data *td;
453
454         if (global)
455                 return &def_thread;
456         if (thread_number >= max_jobs)
457                 return NULL;
458
459         td = &threads[thread_number++];
460         *td = *parent;
461
462         td->thread_number = thread_number;
463         return td;
464 }
465
466 static void put_job(struct thread_data *td)
467 {
468         if (td == &def_thread)
469                 return;
470
471         memset(&threads[td->thread_number - 1], 0, sizeof(*td));
472         thread_number--;
473 }
474
475 /*
476  * Lazy way of fixing up options that depend on each other. We could also
477  * define option callback handlers, but this is easier.
478  */
479 static void fixup_options(struct thread_data *td)
480 {
481         if (!td->rwmixread && td->rwmixwrite)
482                 td->rwmixread = 100 - td->rwmixwrite;
483
484         if (td->write_iolog_file && td->read_iolog_file) {
485                 log_err("fio: read iolog overrides write_iolog\n");
486                 free(td->write_iolog_file);
487                 td->write_iolog_file = NULL;
488         }
489
490         if (td->io_ops->flags & FIO_SYNCIO)
491                 td->iodepth = 1;
492         else {
493                 if (!td->iodepth)
494                         td->iodepth = td->nr_files;
495         }
496
497         /*
498          * only really works for sequential io for now, and with 1 file
499          */
500         if (td->zone_size && !td->sequential && td->nr_files == 1)
501                 td->zone_size = 0;
502
503         /*
504          * Reads can do overwrites, we always need to pre-create the file
505          */
506         if (td_read(td) || td_rw(td))
507                 td->overwrite = 1;
508
509         if (td->bs[DDIR_READ] != DEF_BS)
510                 td->bs[DDIR_WRITE] = td->bs[DDIR_READ];
511         if (!td->min_bs[DDIR_READ])
512                 td->min_bs[DDIR_READ]= td->bs[DDIR_READ];
513         if (!td->max_bs[DDIR_READ])
514                 td->max_bs[DDIR_READ] = td->bs[DDIR_READ];
515         if (!td->min_bs[DDIR_WRITE])
516                 td->min_bs[DDIR_WRITE]= td->bs[DDIR_WRITE];
517         if (!td->max_bs[DDIR_WRITE])
518                 td->max_bs[DDIR_WRITE] = td->bs[DDIR_WRITE];
519
520         td->rw_min_bs = min(td->min_bs[DDIR_READ], td->min_bs[DDIR_WRITE]);
521
522         if (td_read(td) && !td_rw(td))
523                 td->verify = 0;
524
525         if (td->norandommap && td->verify != VERIFY_NONE) {
526                 log_err("fio: norandommap given, verify disabled\n");
527                 td->verify = VERIFY_NONE;
528         }
529         if (td->bs_unaligned && (td->odirect || td->io_ops->flags & FIO_RAWIO))
530                 log_err("fio: bs_unaligned may not work with raw io\n");
531 }
532
533 /*
534  * Adds a job to the list of things todo. Sanitizes the various options
535  * to make sure we don't have conflicts, and initializes various
536  * members of td.
537  */
538 static int add_job(struct thread_data *td, const char *jobname, int job_add_num)
539 {
540         char *ddir_str[] = { "read", "write", "randread", "randwrite",
541                              "rw", NULL, "randrw" };
542         struct stat sb;
543         int numjobs, ddir, i;
544         struct fio_file *f;
545
546 #ifndef FIO_HAVE_LIBAIO
547         if (td->io_engine == FIO_LIBAIO) {
548                 log_err("Linux libaio not available\n");
549                 return 1;
550         }
551 #endif
552 #ifndef FIO_HAVE_POSIXAIO
553         if (td->io_engine == FIO_POSIXAIO) {
554                 log_err("posix aio not available\n");
555                 return 1;
556         }
557 #endif
558
559         /*
560          * the def_thread is just for options, it's not a real job
561          */
562         if (td == &def_thread)
563                 return 0;
564
565         /*
566          * Set default io engine, if none set
567          */
568         if (!td->io_ops) {
569                 td->io_ops = load_ioengine(td, DEF_IO_ENGINE_NAME);
570                 if (!td->io_ops) {
571                         log_err("default engine %s not there?\n", DEF_IO_ENGINE_NAME);
572                         return 1;
573                 }
574         }
575
576         if (td->odirect)
577                 td->io_ops->flags |= FIO_RAWIO;
578
579         fixup_options(td);
580
581         td->filetype = FIO_TYPE_FILE;
582         if (!stat(jobname, &sb)) {
583                 if (S_ISBLK(sb.st_mode))
584                         td->filetype = FIO_TYPE_BD;
585                 else if (S_ISCHR(sb.st_mode))
586                         td->filetype = FIO_TYPE_CHAR;
587         }
588
589         if (td->filename)
590                 td->nr_uniq_files = 1;
591         else
592                 td->nr_uniq_files = td->nr_files;
593
594         if (td->filetype == FIO_TYPE_FILE || td->filename) {
595                 char tmp[PATH_MAX];
596                 int len = 0;
597                 int i;
598
599                 if (td->directory && td->directory[0] != '\0')
600                         sprintf(tmp, "%s/", td->directory);
601
602                 td->files = malloc(sizeof(struct fio_file) * td->nr_files);
603
604                 for_each_file(td, f, i) {
605                         memset(f, 0, sizeof(*f));
606                         f->fd = -1;
607
608                         if (td->filename)
609                                 sprintf(tmp + len, "%s", td->filename);
610                         else
611                                 sprintf(tmp + len, "%s.%d.%d", jobname, td->thread_number, i);
612                         f->file_name = strdup(tmp);
613                 }
614         } else {
615                 td->nr_files = 1;
616                 td->files = malloc(sizeof(struct fio_file));
617                 f = &td->files[0];
618
619                 memset(f, 0, sizeof(*f));
620                 f->fd = -1;
621                 f->file_name = strdup(jobname);
622         }
623
624         for_each_file(td, f, i) {
625                 f->file_size = td->total_file_size / td->nr_files;
626                 f->file_offset = td->start_offset;
627         }
628                 
629         fio_sem_init(&td->mutex, 0);
630
631         td->clat_stat[0].min_val = td->clat_stat[1].min_val = ULONG_MAX;
632         td->slat_stat[0].min_val = td->slat_stat[1].min_val = ULONG_MAX;
633         td->bw_stat[0].min_val = td->bw_stat[1].min_val = ULONG_MAX;
634
635         if (td->stonewall && td->thread_number > 1)
636                 groupid++;
637
638         td->groupid = groupid;
639
640         if (setup_rate(td))
641                 goto err;
642
643         if (td->write_lat_log) {
644                 setup_log(&td->slat_log);
645                 setup_log(&td->clat_log);
646         }
647         if (td->write_bw_log)
648                 setup_log(&td->bw_log);
649
650         if (!td->name)
651                 td->name = strdup(jobname);
652
653         ddir = td->ddir + (!td->sequential << 1) + (td->iomix << 2);
654
655         if (!terse_output) {
656                 if (!job_add_num) {
657                         if (td->io_ops->flags & FIO_CPUIO)
658                                 fprintf(f_out, "%s: ioengine=cpu, cpuload=%u, cpucycle=%u\n", td->name, td->cpuload, td->cpucycle);
659                         else
660                                 fprintf(f_out, "%s: (g=%d): rw=%s, odir=%d, bs=%d-%d/%d-%d, rate=%d, ioengine=%s, iodepth=%d\n", td->name, td->groupid, ddir_str[ddir], td->odirect, td->min_bs[DDIR_READ], td->max_bs[DDIR_READ], td->min_bs[DDIR_WRITE], td->max_bs[DDIR_WRITE], td->rate, td->io_ops->name, td->iodepth);
661                 } else if (job_add_num == 1)
662                         fprintf(f_out, "...\n");
663         }
664
665         /*
666          * recurse add identical jobs, clear numjobs and stonewall options
667          * as they don't apply to sub-jobs
668          */
669         numjobs = td->numjobs;
670         while (--numjobs) {
671                 struct thread_data *td_new = get_new_job(0, td);
672
673                 if (!td_new)
674                         goto err;
675
676                 td_new->numjobs = 1;
677                 td_new->stonewall = 0;
678                 job_add_num = numjobs - 1;
679
680                 if (add_job(td_new, jobname, job_add_num))
681                         goto err;
682         }
683         return 0;
684 err:
685         put_job(td);
686         return -1;
687 }
688
689 /*
690  * Initialize the various random states we need (random io, block size ranges,
691  * read/write mix, etc).
692  */
693 int init_random_state(struct thread_data *td)
694 {
695         unsigned long seeds[4];
696         int fd, num_maps, blocks, i;
697         struct fio_file *f;
698
699         if (td->io_ops->flags & FIO_CPUIO)
700                 return 0;
701
702         fd = open("/dev/urandom", O_RDONLY);
703         if (fd == -1) {
704                 td_verror(td, errno);
705                 return 1;
706         }
707
708         if (read(fd, seeds, sizeof(seeds)) < (int) sizeof(seeds)) {
709                 td_verror(td, EIO);
710                 close(fd);
711                 return 1;
712         }
713
714         close(fd);
715
716         os_random_seed(seeds[0], &td->bsrange_state);
717         os_random_seed(seeds[1], &td->verify_state);
718         os_random_seed(seeds[2], &td->rwmix_state);
719
720         if (td->sequential)
721                 return 0;
722
723         if (td->rand_repeatable)
724                 seeds[3] = DEF_RANDSEED;
725
726         if (!td->norandommap) {
727                 for_each_file(td, f, i) {
728                         blocks = (f->file_size + td->rw_min_bs - 1) / td->rw_min_bs;
729                         num_maps = (blocks + BLOCKS_PER_MAP-1)/ BLOCKS_PER_MAP;
730                         f->file_map = malloc(num_maps * sizeof(long));
731                         f->num_maps = num_maps;
732                         memset(f->file_map, 0, num_maps * sizeof(long));
733                 }
734         }
735
736         os_random_seed(seeds[3], &td->random_state);
737         return 0;
738 }
739
740 static void fill_cpu_mask(os_cpu_mask_t cpumask, int cpu)
741 {
742 #ifdef FIO_HAVE_CPU_AFFINITY
743         unsigned int i;
744
745         CPU_ZERO(&cpumask);
746
747         for (i = 0; i < sizeof(int) * 8; i++) {
748                 if ((1 << i) & cpu)
749                         CPU_SET(i, &cpumask);
750         }
751 #endif
752 }
753
754 static int is_empty_or_comment(char *line)
755 {
756         unsigned int i;
757
758         for (i = 0; i < strlen(line); i++) {
759                 if (line[i] == ';')
760                         return 1;
761                 if (!isspace(line[i]) && !iscntrl(line[i]))
762                         return 0;
763         }
764
765         return 1;
766 }
767
768 static int str_rw_cb(void *data, const char *mem)
769 {
770         struct thread_data *td = data;
771
772         if (!strncmp(mem, "read", 4) || !strncmp(mem, "0", 1)) {
773                 td->ddir = DDIR_READ;
774                 td->sequential = 1;
775                 return 0;
776         } else if (!strncmp(mem, "randread", 8)) {
777                 td->ddir = DDIR_READ;
778                 td->sequential = 0;
779                 return 0;
780         } else if (!strncmp(mem, "write", 5) || !strncmp(mem, "1", 1)) {
781                 td->ddir = DDIR_WRITE;
782                 td->sequential = 1;
783                 return 0;
784         } else if (!strncmp(mem, "randwrite", 9)) {
785                 td->ddir = DDIR_WRITE;
786                 td->sequential = 0;
787                 return 0;
788         } else if (!strncmp(mem, "rw", 2)) {
789                 td->ddir = 0;
790                 td->iomix = 1;
791                 td->sequential = 1;
792                 return 0;
793         } else if (!strncmp(mem, "randrw", 6)) {
794                 td->ddir = 0;
795                 td->iomix = 1;
796                 td->sequential = 0;
797                 return 0;
798         }
799
800         log_err("fio: data direction: read, write, randread, randwrite, rw, randrw\n");
801         return 1;
802 }
803
804 static int str_verify_cb(void *data, const char *mem)
805 {
806         struct thread_data *td = data;
807
808         if (!strncmp(mem, "0", 1)) {
809                 td->verify = VERIFY_NONE;
810                 return 0;
811         } else if (!strncmp(mem, "md5", 3) || !strncmp(mem, "1", 1)) {
812                 td->verify = VERIFY_MD5;
813                 return 0;
814         } else if (!strncmp(mem, "crc32", 5)) {
815                 td->verify = VERIFY_CRC32;
816                 return 0;
817         }
818
819         log_err("fio: verify types: md5, crc32\n");
820         return 1;
821 }
822
823 static int str_mem_cb(void *data, const char *mem)
824 {
825         struct thread_data *td = data;
826
827         if (!strncmp(mem, "malloc", 6)) {
828                 td->mem_type = MEM_MALLOC;
829                 return 0;
830         } else if (!strncmp(mem, "shm", 3)) {
831                 td->mem_type = MEM_SHM;
832                 return 0;
833         } else if (!strncmp(mem, "mmap", 4)) {
834                 td->mem_type = MEM_MMAP;
835                 return 0;
836         }
837
838         log_err("fio: mem type: malloc, shm, mmap\n");
839         return 1;
840 }
841
842 static int str_ioengine_cb(void *data, const char *str)
843 {
844         struct thread_data *td = data;
845
846         td->io_ops = load_ioengine(td, str);
847         if (td->io_ops)
848                 return 0;
849
850         log_err("fio: ioengine: { linuxaio, aio, libaio }, posixaio, sync, mmap, sgio, splice, cpu\n");
851         return 1;
852 }
853
854 static int str_lockmem_cb(void fio_unused *data, unsigned long *val)
855 {
856         mlock_size = *val;
857         return 0;
858 }
859
860 static int str_prioclass_cb(void *data, unsigned int *val)
861 {
862         struct thread_data *td = data;
863
864         td->ioprio |= *val << IOPRIO_CLASS_SHIFT;
865         return 0;
866 }
867
868 static int str_prio_cb(void *data, unsigned int *val)
869 {
870         struct thread_data *td = data;
871
872         td->ioprio |= *val;
873         return 0;
874 }
875
876 static int str_exitall_cb(void)
877 {
878         exitall_on_terminate = 1;
879         return 0;
880 }
881
882 static int str_cpumask_cb(void *data, unsigned int *val)
883 {
884         struct thread_data *td = data;
885
886         fill_cpu_mask(td->cpumask, *val);
887         return 0;
888 }
889
890 /*
891  * This is our [ini] type file parser.
892  */
893 int parse_jobs_ini(char *file, int stonewall_flag)
894 {
895         unsigned int global;
896         struct thread_data *td;
897         char *string, *name;
898         fpos_t off;
899         FILE *f;
900         char *p;
901         int ret = 0, stonewall;
902
903         f = fopen(file, "r");
904         if (!f) {
905                 perror("fopen job file");
906                 return 1;
907         }
908
909         string = malloc(4096);
910         name = malloc(256);
911         memset(name, 0, 256);
912
913         stonewall = stonewall_flag;
914         do {
915                 p = fgets(string, 4095, f);
916                 if (!p)
917                         break;
918                 if (is_empty_or_comment(p))
919                         continue;
920                 if (sscanf(p, "[%255s]", name) != 1)
921                         continue;
922
923                 global = !strncmp(name, "global", 6);
924
925                 name[strlen(name) - 1] = '\0';
926
927                 td = get_new_job(global, &def_thread);
928                 if (!td) {
929                         ret = 1;
930                         break;
931                 }
932
933                 /*
934                  * Seperate multiple job files by a stonewall
935                  */
936                 if (!global && stonewall) {
937                         td->stonewall = stonewall;
938                         stonewall = 0;
939                 }
940
941                 fgetpos(f, &off);
942                 while ((p = fgets(string, 4096, f)) != NULL) {
943                         if (is_empty_or_comment(p))
944                                 continue;
945
946                         strip_blank_front(&p);
947
948                         if (p[0] == '[')
949                                 break;
950
951                         strip_blank_end(p);
952
953                         fgetpos(f, &off);
954
955                         /*
956                          * Don't break here, continue parsing options so we
957                          * dump all the bad ones. Makes trial/error fixups
958                          * easier on the user.
959                          */
960                         ret |= parse_option(p, options, td);
961                 }
962
963                 if (!ret) {
964                         fsetpos(f, &off);
965                         ret = add_job(td, name, 0);
966                 } else {
967                         log_err("fio: job %s dropped\n", name);
968                         put_job(td);
969                 }
970         } while (!ret);
971
972         free(string);
973         free(name);
974         fclose(f);
975         return ret;
976 }
977
978 static int fill_def_thread(void)
979 {
980         memset(&def_thread, 0, sizeof(def_thread));
981
982         if (fio_getaffinity(getpid(), &def_thread.cpumask) == -1) {
983                 perror("sched_getaffinity");
984                 return 1;
985         }
986
987         /*
988          * fill globals
989          */
990         def_thread.ddir = DDIR_READ;
991         def_thread.iomix = 0;
992         def_thread.bs[DDIR_READ] = DEF_BS;
993         def_thread.bs[DDIR_WRITE] = DEF_BS;
994         def_thread.min_bs[DDIR_READ] = def_thread.min_bs[DDIR_WRITE] = 0;
995         def_thread.max_bs[DDIR_READ] = def_thread.max_bs[DDIR_WRITE] = 0;
996         def_thread.odirect = DEF_ODIRECT;
997         def_thread.ratecycle = DEF_RATE_CYCLE;
998         def_thread.sequential = DEF_SEQUENTIAL;
999         def_thread.timeout = def_timeout;
1000         def_thread.overwrite = DEF_OVERWRITE;
1001         def_thread.invalidate_cache = DEF_INVALIDATE;
1002         def_thread.sync_io = DEF_SYNCIO;
1003         def_thread.mem_type = MEM_MALLOC;
1004         def_thread.bw_avg_time = DEF_BWAVGTIME;
1005         def_thread.create_serialize = DEF_CREATE_SER;
1006         def_thread.create_fsync = DEF_CREATE_FSYNC;
1007         def_thread.loops = DEF_LOOPS;
1008         def_thread.verify = DEF_VERIFY;
1009         def_thread.stonewall = DEF_STONEWALL;
1010         def_thread.numjobs = DEF_NUMJOBS;
1011         def_thread.use_thread = DEF_USE_THREAD;
1012         def_thread.rwmixcycle = DEF_RWMIX_CYCLE;
1013         def_thread.rwmixread = DEF_RWMIX_READ;
1014         def_thread.nice = DEF_NICE;
1015         def_thread.rand_repeatable = DEF_RAND_REPEAT;
1016         def_thread.nr_files = DEF_NR_FILES;
1017         def_thread.unlink = DEF_UNLINK;
1018         def_thread.write_bw_log = write_bw_log;
1019         def_thread.write_lat_log = write_lat_log;
1020         def_thread.norandommap = DEF_NO_RAND_MAP;
1021 #ifdef FIO_HAVE_DISK_UTIL
1022         def_thread.do_disk_util = 1;
1023 #endif
1024
1025         return 0;
1026 }
1027
1028 static void usage(void)
1029 {
1030         printf("%s\n", fio_version_string);
1031         printf("\t--output\tWrite output to file\n");
1032         printf("\t--timeout\tRuntime in seconds\n");
1033         printf("\t--latency-log\tGenerate per-job latency logs\n");
1034         printf("\t--bandwidth-log\tGenerate per-job bandwidth logs\n");
1035         printf("\t--minimal\tMinimal (terse) output\n");
1036         printf("\t--version\tPrint version info and exit\n");
1037 }
1038
1039 static int parse_cmd_line(int argc, char *argv[])
1040 {
1041         struct thread_data *td = NULL;
1042         int c, ini_idx = 0, lidx, ret;
1043
1044         while ((c = getopt_long(argc, argv, "", long_options, &lidx)) != -1) {
1045                 switch (c) {
1046                 case 't':
1047                         def_timeout = atoi(optarg);
1048                         break;
1049                 case 'l':
1050                         write_lat_log = 1;
1051                         break;
1052                 case 'w':
1053                         write_bw_log = 1;
1054                         break;
1055                 case 'o':
1056                         f_out = fopen(optarg, "w+");
1057                         if (!f_out) {
1058                                 perror("fopen output");
1059                                 exit(1);
1060                         }
1061                         f_err = f_out;
1062                         break;
1063                 case 'm':
1064                         terse_output = 1;
1065                         break;
1066                 case 'h':
1067                         usage();
1068                         exit(0);
1069                 case 'v':
1070                         printf("%s\n", fio_version_string);
1071                         exit(0);
1072                 case FIO_GETOPT_JOB: {
1073                         const char *opt = long_options[lidx].name;
1074                         char *val = optarg;
1075
1076                         if (!strncmp(opt, "name", 4) && td) {
1077                                 ret = add_job(td, td->name ?: "fio", 0);
1078                                 if (ret) {
1079                                         put_job(td);
1080                                         return 0;
1081                                 }
1082                                 td = NULL;
1083                         }
1084                         if (!td) {
1085                                 int global = !strncmp(val, "global", 6);
1086
1087                                 td = get_new_job(global, &def_thread);
1088                                 if (!td)
1089                                         return 0;
1090                         }
1091
1092                         ret = parse_cmd_option(opt, val, options, td);
1093                         if (ret) {
1094                                 log_err("fio: job dropped\n");
1095                                 put_job(td);
1096                                 td = NULL;
1097                         }
1098                         break;
1099                 }
1100                 default:
1101                         printf("optarg <<%s>>\n", argv[optind]);
1102                         break;
1103                 }
1104         }
1105
1106         if (td) {
1107                 ret = add_job(td, td->name ?: "fio", 0);
1108                 if (ret)
1109                         put_job(td);
1110         }
1111
1112         while (optind < argc) {
1113                 ini_idx++;
1114                 ini_file = realloc(ini_file, ini_idx * sizeof(char *));
1115                 ini_file[ini_idx - 1] = strdup(argv[optind]);
1116                 optind++;
1117         }
1118
1119         return ini_idx;
1120 }
1121
1122 static void free_shm(void)
1123 {
1124         struct shmid_ds sbuf;
1125
1126         if (threads) {
1127                 shmdt((void *) threads);
1128                 threads = NULL;
1129                 shmctl(shm_id, IPC_RMID, &sbuf);
1130         }
1131 }
1132
1133 /*
1134  * The thread area is shared between the main process and the job
1135  * threads/processes. So setup a shared memory segment that will hold
1136  * all the job info.
1137  */
1138 static int setup_thread_area(void)
1139 {
1140         /*
1141          * 1024 is too much on some machines, scale max_jobs if
1142          * we get a failure that looks like too large a shm segment
1143          */
1144         do {
1145                 size_t size = max_jobs * sizeof(struct thread_data);
1146
1147                 shm_id = shmget(0, size, IPC_CREAT | 0600);
1148                 if (shm_id != -1)
1149                         break;
1150                 if (errno != EINVAL) {
1151                         perror("shmget");
1152                         break;
1153                 }
1154
1155                 max_jobs >>= 1;
1156         } while (max_jobs);
1157
1158         if (shm_id == -1)
1159                 return 1;
1160
1161         threads = shmat(shm_id, NULL, 0);
1162         if (threads == (void *) -1) {
1163                 perror("shmat");
1164                 return 1;
1165         }
1166
1167         atexit(free_shm);
1168         return 0;
1169 }
1170
1171 /*
1172  * Copy the fio options into the long options map, so we mirror
1173  * job and cmd line options.
1174  */
1175 static void dupe_job_options(void)
1176 {
1177         struct fio_option *o;
1178         unsigned int i;
1179
1180         i = 0;
1181         while (long_options[i].name)
1182                 i++;
1183
1184         o = &options[0];
1185         while (o->name) {
1186                 long_options[i].name = o->name;
1187                 long_options[i].val = FIO_GETOPT_JOB;
1188                 if (o->type == FIO_OPT_STR_SET)
1189                         long_options[i].has_arg = no_argument;
1190                 else
1191                         long_options[i].has_arg = required_argument;
1192
1193                 i++;
1194                 o++;
1195                 assert(i < FIO_JOB_OPTS + FIO_CMD_OPTS);
1196         }
1197 }
1198
1199 int parse_options(int argc, char *argv[])
1200 {
1201         int job_files, i;
1202
1203         f_out = stdout;
1204         f_err = stderr;
1205
1206         dupe_job_options();
1207
1208         if (setup_thread_area())
1209                 return 1;
1210         if (fill_def_thread())
1211                 return 1;
1212
1213         job_files = parse_cmd_line(argc, argv);
1214
1215         for (i = 0; i < job_files; i++) {
1216                 if (fill_def_thread())
1217                         return 1;
1218                 if (parse_jobs_ini(ini_file[i], i))
1219                         return 1;
1220                 free(ini_file[i]);
1221         }
1222
1223         free(ini_file);
1224
1225         if (!thread_number) {
1226                 log_err("No jobs defined(s)\n");
1227                 return 1;
1228         }
1229
1230         return 0;
1231 }