init.c revision 7c124ac153eebf48bc85f9033ae06fd7152e4216
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} 1172