[PATCH] Add fio_assert()
[fio.git] / init.c
CommitLineData
906c8d75 1/*
cb2c86fd 2 * This file contains job initialization and setup functions.
906c8d75 3 */
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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>
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11#include <getopt.h>
12#include <assert.h>
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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"
cb2c86fd 19#include "parse.h"
ebac4655 20
ee738499 21#define FIO_RANDSEED (0xb1899bedUL)
ebac4655 22
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23#define td_var_offset(var) ((size_t) &((struct thread_data *)0)->var)
24
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25static int str_rw_cb(void *, const char *);
26static int str_ioengine_cb(void *, const char *);
27static int str_mem_cb(void *, const char *);
28static int str_verify_cb(void *, const char *);
e1f36503 29static int str_lockmem_cb(void *, unsigned long *);
34cfcdaf 30#ifdef FIO_HAVE_IOPRIO
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31static int str_prio_cb(void *, unsigned int *);
32static int str_prioclass_cb(void *, unsigned int *);
34cfcdaf 33#endif
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34static int str_exitall_cb(void);
35static int str_cpumask_cb(void *, unsigned int *);
36
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37#define __stringify_1(x) #x
38#define __stringify(x) __stringify_1(x)
39
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40/*
41 * Map of job/command line options
42 */
43static struct fio_option options[] = {
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44 {
45 .name = "description",
46 .type = FIO_OPT_STR_STORE,
47 .off1 = td_var_offset(description),
48 .help = "Text job description",
49 },
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50 {
51 .name = "name",
52 .type = FIO_OPT_STR_STORE,
53 .off1 = td_var_offset(name),
fd28ca49 54 .help = "Name of this job",
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55 },
56 {
57 .name = "directory",
58 .type = FIO_OPT_STR_STORE,
59 .off1 = td_var_offset(directory),
fd28ca49 60 .help = "Directory to store files in",
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61 },
62 {
63 .name = "filename",
64 .type = FIO_OPT_STR_STORE,
65 .off1 = td_var_offset(filename),
fd28ca49 66 .help = "Force the use of a specific file",
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67 },
68 {
69 .name = "rw",
70 .type = FIO_OPT_STR,
71 .cb = str_rw_cb,
15f7918f 72 .help = "IO direction",
ee738499 73 .def = "read",
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74 .posval = { "read", "write", "randwrite", "randread", "rw",
75 "randrw", },
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76 },
77 {
78 .name = "ioengine",
79 .type = FIO_OPT_STR,
80 .cb = str_ioengine_cb,
15f7918f 81 .help = "IO engine to use",
ee738499 82 .def = "sync",
15f7918f 83 .posval = { "sync", "libaio", "posixaio", "mmap", "splice",
ed92ac0c 84 "sg", "null", "net", },
e1f36503 85 },
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86 {
87 .name = "iodepth",
88 .type = FIO_OPT_INT,
89 .off1 = td_var_offset(iodepth),
90 .help = "Amount of IO buffers to keep in flight",
91 .def = "1",
92 },
93 {
94 .name = "size",
95 .type = FIO_OPT_STR_VAL,
96 .off1 = td_var_offset(total_file_size),
97 .help = "Size of device or file",
98 },
99 {
100 .name = "bs",
101 .type = FIO_OPT_STR_VAL_INT,
102 .off1 = td_var_offset(bs[DDIR_READ]),
103 .off2 = td_var_offset(bs[DDIR_WRITE]),
104 .help = "Block size unit",
105 .def = "4k",
106 },
107 {
108 .name = "bsrange",
109 .type = FIO_OPT_RANGE,
110 .off1 = td_var_offset(min_bs[DDIR_READ]),
111 .off2 = td_var_offset(max_bs[DDIR_READ]),
112 .off3 = td_var_offset(min_bs[DDIR_WRITE]),
113 .off4 = td_var_offset(max_bs[DDIR_WRITE]),
114 .help = "Set block size range (in more detail than bs)",
115 },
116 {
117 .name = "bs_unaligned",
118 .type = FIO_OPT_STR_SET,
119 .off1 = td_var_offset(bs_unaligned),
120 .help = "Don't sector align IO buffer sizes",
121 },
122 {
123 .name = "offset",
124 .type = FIO_OPT_STR_VAL,
125 .off1 = td_var_offset(start_offset),
126 .help = "Start IO from this offset",
127 .def = "0",
128 },
129 {
130 .name = "randrepeat",
131 .type = FIO_OPT_BOOL,
132 .off1 = td_var_offset(rand_repeatable),
133 .help = "Use repeatable random IO pattern",
134 .def = "1",
135 },
136 {
137 .name = "norandommap",
138 .type = FIO_OPT_STR_SET,
139 .off1 = td_var_offset(norandommap),
140 .help = "Accept potential duplicate random blocks",
141 },
142 {
143 .name = "nrfiles",
144 .type = FIO_OPT_INT,
145 .off1 = td_var_offset(nr_files),
146 .help = "Split job workload between this number of files",
147 .def = "1",
148 },
149 {
150 .name = "fsync",
151 .type = FIO_OPT_INT,
152 .off1 = td_var_offset(fsync_blocks),
153 .help = "Issue fsync for writes every given number of blocks",
154 .def = "0",
155 },
156 {
157 .name = "direct",
158 .type = FIO_OPT_BOOL,
159 .off1 = td_var_offset(odirect),
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160 .help = "Use O_DIRECT IO (negates buffered)",
161 .def = "0",
162 },
163 {
164 .name = "buffered",
165 .type = FIO_OPT_BOOL,
166 .off1 = td_var_offset(odirect),
167 .neg = 1,
168 .help = "Use buffered IO (negates direct)",
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169 .def = "1",
170 },
171 {
172 .name = "overwrite",
173 .type = FIO_OPT_BOOL,
174 .off1 = td_var_offset(overwrite),
175 .help = "When writing, set whether to overwrite current data",
176 .def = "0",
177 },
178 {
179 .name = "loops",
180 .type = FIO_OPT_INT,
181 .off1 = td_var_offset(loops),
182 .help = "Number of times to run the job",
183 .def = "1",
184 },
185 {
186 .name = "numjobs",
187 .type = FIO_OPT_INT,
188 .off1 = td_var_offset(numjobs),
189 .help = "Duplicate this job this many times",
190 .def = "1",
191 },
192 {
193 .name = "startdelay",
194 .type = FIO_OPT_INT,
195 .off1 = td_var_offset(start_delay),
196 .help = "Only start job when this period has passed",
197 .def = "0",
198 },
199 {
200 .name = "runtime",
201 .alias = "timeout",
202 .type = FIO_OPT_STR_VAL_TIME,
203 .off1 = td_var_offset(timeout),
204 .help = "Stop workload when this amount of time has passed",
205 .def = "0",
206 },
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207 {
208 .name = "mem",
209 .type = FIO_OPT_STR,
210 .cb = str_mem_cb,
15f7918f 211 .help = "Backing type for IO buffers",
ee738499 212 .def = "malloc",
15f7918f 213 .posval = { "malloc", "shm", "shmhuge", "mmap", "mmaphuge", },
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214 },
215 {
216 .name = "verify",
217 .type = FIO_OPT_STR,
218 .cb = str_verify_cb,
15f7918f 219 .help = "Verify sum function",
ee738499 220 .def = "0",
15f7918f 221 .posval = { "crc32", "md5", },
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222 },
223 {
224 .name = "write_iolog",
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225 .type = FIO_OPT_STR_STORE,
226 .off1 = td_var_offset(write_iolog_file),
fd28ca49 227 .help = "Store IO pattern to file",
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228 },
229 {
076efc7c 230 .name = "read_iolog",
e1f36503 231 .type = FIO_OPT_STR_STORE,
076efc7c 232 .off1 = td_var_offset(read_iolog_file),
fd28ca49 233 .help = "Playback IO pattern from file",
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234 },
235 {
236 .name = "exec_prerun",
237 .type = FIO_OPT_STR_STORE,
238 .off1 = td_var_offset(exec_prerun),
fd28ca49 239 .help = "Execute this file prior to running job",
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240 },
241 {
242 .name = "exec_postrun",
243 .type = FIO_OPT_STR_STORE,
244 .off1 = td_var_offset(exec_postrun),
fd28ca49 245 .help = "Execute this file after running job",
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246 },
247#ifdef FIO_HAVE_IOSCHED_SWITCH
248 {
249 .name = "ioscheduler",
250 .type = FIO_OPT_STR_STORE,
251 .off1 = td_var_offset(ioscheduler),
fd28ca49 252 .help = "Use this IO scheduler on the backing device",
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253 },
254#endif
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255 {
256 .name = "zonesize",
257 .type = FIO_OPT_STR_VAL,
258 .off1 = td_var_offset(zone_size),
fd28ca49 259 .help = "Give size of an IO zone",
ee738499 260 .def = "0",
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261 },
262 {
263 .name = "zoneskip",
264 .type = FIO_OPT_STR_VAL,
265 .off1 = td_var_offset(zone_skip),
fd28ca49 266 .help = "Space between IO zones",
ee738499 267 .def = "0",
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268 },
269 {
270 .name = "lockmem",
271 .type = FIO_OPT_STR_VAL,
272 .cb = str_lockmem_cb,
fd28ca49 273 .help = "Lock down this amount of memory",
ee738499 274 .def = "0",
e1f36503 275 },
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276 {
277 .name = "rwmixcycle",
278 .type = FIO_OPT_INT,
279 .off1 = td_var_offset(rwmixcycle),
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280 .help = "Cycle period for mixed read/write workloads (msec)",
281 .def = "500",
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282 },
283 {
284 .name = "rwmixread",
285 .type = FIO_OPT_INT,
286 .off1 = td_var_offset(rwmixread),
ee738499 287 .maxval = 100,
fd28ca49 288 .help = "Percentage of mixed workload that is reads",
ee738499 289 .def = "50",
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290 },
291 {
292 .name = "rwmixwrite",
293 .type = FIO_OPT_INT,
294 .off1 = td_var_offset(rwmixwrite),
ee738499 295 .maxval = 100,
fd28ca49 296 .help = "Percentage of mixed workload that is writes",
ee738499 297 .def = "50",
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298 },
299 {
300 .name = "nice",
301 .type = FIO_OPT_INT,
302 .off1 = td_var_offset(nice),
fd28ca49 303 .help = "Set job CPU nice value",
15f7918f 304 .minval = -19,
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305 .maxval = 20,
306 .def = "0",
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307 },
308#ifdef FIO_HAVE_IOPRIO
309 {
310 .name = "prio",
311 .type = FIO_OPT_INT,
312 .cb = str_prio_cb,
fd28ca49 313 .help = "Set job IO priority value",
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314 .minval = 0,
315 .maxval = 7,
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316 },
317 {
318 .name = "prioclass",
319 .type = FIO_OPT_INT,
320 .cb = str_prioclass_cb,
fd28ca49 321 .help = "Set job IO priority class",
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322 .minval = 0,
323 .maxval = 3,
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324 },
325#endif
326 {
327 .name = "thinktime",
328 .type = FIO_OPT_INT,
1304923a 329 .off1 = td_var_offset(thinktime),
5fa0f817 330 .help = "Idle time between IO buffers (usec)",
ee738499 331 .def = "0",
e1f36503 332 },
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333 {
334 .name = "thinktime_blocks",
335 .type = FIO_OPT_INT,
1304923a 336 .off1 = td_var_offset(thinktime_blocks),
fd28ca49 337 .help = "IO buffer period between 'thinktime'",
ee738499 338 .def = "1",
9c1f7434 339 },
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340 {
341 .name = "rate",
342 .type = FIO_OPT_INT,
1304923a 343 .off1 = td_var_offset(rate),
fd28ca49 344 .help = "Set bandwidth rate",
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345 },
346 {
347 .name = "ratemin",
348 .type = FIO_OPT_INT,
1304923a 349 .off1 = td_var_offset(ratemin),
fd28ca49 350 .help = "The bottom limit accepted",
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351 },
352 {
353 .name = "ratecycle",
354 .type = FIO_OPT_INT,
1304923a 355 .off1 = td_var_offset(ratecycle),
6da1fa7f 356 .help = "Window average for rate limits (msec)",
ee738499 357 .def = "1000",
e1f36503 358 },
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359 {
360 .name = "invalidate",
13335ddb 361 .type = FIO_OPT_BOOL,
1304923a 362 .off1 = td_var_offset(invalidate_cache),
fd28ca49 363 .help = "Invalidate buffer/page cache prior to running job",
ee738499 364 .def = "1",
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365 },
366 {
367 .name = "sync",
13335ddb 368 .type = FIO_OPT_BOOL,
1304923a 369 .off1 = td_var_offset(sync_io),
fd28ca49 370 .help = "Use O_SYNC for buffered writes",
ee738499 371 .def = "0",
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372 },
373 {
374 .name = "bwavgtime",
375 .type = FIO_OPT_INT,
1304923a 376 .off1 = td_var_offset(bw_avg_time),
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377 .help = "Time window over which to calculate bandwidth (msec)",
378 .def = "500",
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379 },
380 {
381 .name = "create_serialize",
13335ddb 382 .type = FIO_OPT_BOOL,
1304923a 383 .off1 = td_var_offset(create_serialize),
fd28ca49 384 .help = "Serialize creating of job files",
ee738499 385 .def = "1",
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386 },
387 {
388 .name = "create_fsync",
13335ddb 389 .type = FIO_OPT_BOOL,
1304923a 390 .off1 = td_var_offset(create_fsync),
fd28ca49 391 .help = "Fsync file after creation",
ee738499 392 .def = "1",
e1f36503 393 },
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394 {
395 .name = "cpuload",
396 .type = FIO_OPT_INT,
1304923a 397 .off1 = td_var_offset(cpuload),
fd28ca49 398 .help = "Use this percentage of CPU",
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399 },
400 {
401 .name = "cpuchunks",
402 .type = FIO_OPT_INT,
1304923a 403 .off1 = td_var_offset(cpucycle),
fd28ca49 404 .help = "Length of the CPU burn cycles",
e1f36503 405 },
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406#ifdef FIO_HAVE_CPU_AFFINITY
407 {
408 .name = "cpumask",
409 .type = FIO_OPT_INT,
410 .cb = str_cpumask_cb,
fd28ca49 411 .help = "CPU affinity mask",
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412 },
413#endif
414 {
415 .name = "end_fsync",
13335ddb 416 .type = FIO_OPT_BOOL,
1304923a 417 .off1 = td_var_offset(end_fsync),
fd28ca49 418 .help = "Include fsync at the end of job",
ee738499 419 .def = "0",
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420 },
421 {
422 .name = "unlink",
13335ddb 423 .type = FIO_OPT_BOOL,
e1f36503 424 .off1 = td_var_offset(unlink),
ee738499 425 .help = "Unlink created files after job has completed",
e545a6ce 426 .def = "0",
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427 },
428 {
429 .name = "exitall",
430 .type = FIO_OPT_STR_SET,
431 .cb = str_exitall_cb,
fd28ca49 432 .help = "Terminate all jobs when one exits",
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433 },
434 {
435 .name = "stonewall",
436 .type = FIO_OPT_STR_SET,
437 .off1 = td_var_offset(stonewall),
fd28ca49 438 .help = "Insert a hard barrier between this job and previous",
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439 },
440 {
441 .name = "thread",
442 .type = FIO_OPT_STR_SET,
d9bb3b80 443 .off1 = td_var_offset(use_thread),
fd28ca49 444 .help = "Use threads instead of forks",
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445 },
446 {
447 .name = "write_bw_log",
448 .type = FIO_OPT_STR_SET,
449 .off1 = td_var_offset(write_bw_log),
fd28ca49 450 .help = "Write log of bandwidth during run",
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451 },
452 {
453 .name = "write_lat_log",
454 .type = FIO_OPT_STR_SET,
455 .off1 = td_var_offset(write_lat_log),
fd28ca49 456 .help = "Write log of latency during run",
e1f36503 457 },
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458 {
459 .name = "hugepage-size",
460 .type = FIO_OPT_STR_VAL,
461 .off1 = td_var_offset(hugepage_size),
fd28ca49 462 .help = "When using hugepages, specify size of each page",
ee738499 463 .def = __stringify(FIO_HUGE_PAGE),
56bb17f2 464 },
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465 {
466 .name = NULL,
467 },
468};
469
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470#define FIO_JOB_OPTS (sizeof(options) / sizeof(struct fio_option))
471#define FIO_CMD_OPTS (16)
472#define FIO_GETOPT_JOB (0x89988998)
473
474/*
475 * Command line options. These will contain the above, plus a few
476 * extra that only pertain to fio itself and not jobs.
477 */
478static struct option long_options[FIO_JOB_OPTS + FIO_CMD_OPTS] = {
479 {
480 .name = "output",
481 .has_arg = required_argument,
482 .val = 'o',
483 },
484 {
485 .name = "timeout",
486 .has_arg = required_argument,
487 .val = 't',
488 },
489 {
490 .name = "latency-log",
491 .has_arg = required_argument,
492 .val = 'l',
493 },
494 {
495 .name = "bandwidth-log",
496 .has_arg = required_argument,
497 .val = 'b',
498 },
499 {
500 .name = "minimal",
501 .has_arg = optional_argument,
502 .val = 'm',
503 },
504 {
505 .name = "version",
506 .has_arg = no_argument,
507 .val = 'v',
508 },
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509 {
510 .name = "help",
511 .has_arg = no_argument,
512 .val = 'h',
513 },
514 {
515 .name = "cmdhelp",
516 .has_arg = required_argument,
517 .val = 'c',
518 },
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519 {
520 .name = NULL,
521 },
522};
523
ee738499 524static int def_timeout = 0;
972cfd25 525
5cd033bb 526static char fio_version_string[] = "fio 1.11";
ebac4655 527
972cfd25 528static char **ini_file;
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529static int max_jobs = MAX_JOBS;
530
531struct thread_data def_thread;
532struct thread_data *threads = NULL;
533
ebac4655 534int exitall_on_terminate = 0;
c6ae0a5b 535int terse_output = 0;
c04f7ec3 536unsigned long long mlock_size = 0;
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537FILE *f_out = NULL;
538FILE *f_err = NULL;
ebac4655 539
ee738499 540static int write_lat_log = 0;
bb3884d8 541int write_bw_log = 0;
ec94ec56 542
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543/*
544 * Return a free job structure.
545 */
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546static struct thread_data *get_new_job(int global, struct thread_data *parent)
547{
548 struct thread_data *td;
549
550 if (global)
551 return &def_thread;
552 if (thread_number >= max_jobs)
553 return NULL;
554
555 td = &threads[thread_number++];
ddaeaa5a 556 *td = *parent;
ebac4655 557
ebac4655 558 td->thread_number = thread_number;
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559 return td;
560}
561
562static void put_job(struct thread_data *td)
563{
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564 if (td == &def_thread)
565 return;
566
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567 if (td->error)
568 fprintf(f_out, "fio: %s\n", td->verror);
569
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570 memset(&threads[td->thread_number - 1], 0, sizeof(*td));
571 thread_number--;
572}
573
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574/*
575 * Lazy way of fixing up options that depend on each other. We could also
576 * define option callback handlers, but this is easier.
577 */
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578static void fixup_options(struct thread_data *td)
579{
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580 if (!td->rwmixread && td->rwmixwrite)
581 td->rwmixread = 100 - td->rwmixwrite;
dad915e3 582
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583 if (td->write_iolog_file && td->read_iolog_file) {
584 log_err("fio: read iolog overrides write_iolog\n");
585 free(td->write_iolog_file);
586 td->write_iolog_file = NULL;
587 }
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588
589 if (td->io_ops->flags & FIO_SYNCIO)
590 td->iodepth = 1;
591 else {
592 if (!td->iodepth)
593 td->iodepth = td->nr_files;
594 }
595
596 /*
597 * only really works for sequential io for now, and with 1 file
598 */
599 if (td->zone_size && !td->sequential && td->nr_files == 1)
600 td->zone_size = 0;
601
602 /*
603 * Reads can do overwrites, we always need to pre-create the file
604 */
605 if (td_read(td) || td_rw(td))
606 td->overwrite = 1;
607
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608 if (!td->min_bs[DDIR_READ])
609 td->min_bs[DDIR_READ]= td->bs[DDIR_READ];
610 if (!td->max_bs[DDIR_READ])
611 td->max_bs[DDIR_READ] = td->bs[DDIR_READ];
612 if (!td->min_bs[DDIR_WRITE])
75e6f36f 613 td->min_bs[DDIR_WRITE]= td->bs[DDIR_WRITE];
a00735e6 614 if (!td->max_bs[DDIR_WRITE])
75e6f36f 615 td->max_bs[DDIR_WRITE] = td->bs[DDIR_WRITE];
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616
617 td->rw_min_bs = min(td->min_bs[DDIR_READ], td->min_bs[DDIR_WRITE]);
618
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619 if (td_read(td) && !td_rw(td))
620 td->verify = 0;
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621
622 if (td->norandommap && td->verify != VERIFY_NONE) {
623 log_err("fio: norandommap given, verify disabled\n");
624 td->verify = VERIFY_NONE;
625 }
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626 if (td->bs_unaligned && (td->odirect || td->io_ops->flags & FIO_RAWIO))
627 log_err("fio: bs_unaligned may not work with raw io\n");
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628
629 /*
630 * O_DIRECT and char doesn't mix, clear that flag if necessary.
631 */
632 if (td->filetype == FIO_TYPE_CHAR && td->odirect)
633 td->odirect = 0;
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634}
635
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636/*
637 * This function leaks the buffer
638 */
639static char *to_kmg(unsigned int val)
640{
641 char *buf = malloc(32);
245142ff 642 char post[] = { 0, 'K', 'M', 'G', 'P', 0 };
f8977ee6
JA
643 char *p = post;
644
245142ff 645 do {
f8977ee6
JA
646 if (val & 1023)
647 break;
648
649 val >>= 10;
650 p++;
245142ff 651 } while (*p);
f8977ee6
JA
652
653 snprintf(buf, 31, "%u%c", val, *p);
654 return buf;
655}
656
906c8d75
JA
657/*
658 * Adds a job to the list of things todo. Sanitizes the various options
659 * to make sure we don't have conflicts, and initializes various
660 * members of td.
661 */
75154845 662static int add_job(struct thread_data *td, const char *jobname, int job_add_num)
ebac4655 663{
3c9b60c1
JA
664 const char *ddir_str[] = { "read", "write", "randread", "randwrite",
665 "rw", NULL, "randrw" };
ebac4655 666 struct stat sb;
53cdc686
JA
667 int numjobs, ddir, i;
668 struct fio_file *f;
ebac4655 669
ebac4655
JA
670 /*
671 * the def_thread is just for options, it's not a real job
672 */
673 if (td == &def_thread)
674 return 0;
675
ee738499 676 assert(td->io_ops);
df64119d 677
690adba3
JA
678 if (td->odirect)
679 td->io_ops->flags |= FIO_RAWIO;
680
ebac4655 681 td->filetype = FIO_TYPE_FILE;
0af7b542
JA
682 if (!stat(jobname, &sb)) {
683 if (S_ISBLK(sb.st_mode))
684 td->filetype = FIO_TYPE_BD;
685 else if (S_ISCHR(sb.st_mode))
686 td->filetype = FIO_TYPE_CHAR;
687 }
ebac4655 688
e0a22335
JA
689 fixup_options(td);
690
13f8e2d2
JA
691 if (td->filename)
692 td->nr_uniq_files = 1;
693 else
694 td->nr_uniq_files = td->nr_files;
695
696 if (td->filetype == FIO_TYPE_FILE || td->filename) {
e9c047a0 697 char tmp[PATH_MAX];
53cdc686 698 int len = 0;
e9c047a0 699
16edf25d
JA
700 if (td->directory && td->directory[0] != '\0') {
701 if (lstat(td->directory, &sb) < 0) {
702 log_err("fio: %s is not a directory\n", td->directory);
703 td_verror(td, errno);
704 return 1;
705 }
706 if (!S_ISDIR(sb.st_mode)) {
707 log_err("fio: %s is not a directory\n", td->directory);
708 return 1;
709 }
8aeebd55 710 len = sprintf(tmp, "%s/", td->directory);
16edf25d 711 }
ebac4655 712
53cdc686
JA
713 td->files = malloc(sizeof(struct fio_file) * td->nr_files);
714
715 for_each_file(td, f, i) {
716 memset(f, 0, sizeof(*f));
717 f->fd = -1;
718
13f8e2d2
JA
719 if (td->filename)
720 sprintf(tmp + len, "%s", td->filename);
721 else
722 sprintf(tmp + len, "%s.%d.%d", jobname, td->thread_number, i);
53cdc686
JA
723 f->file_name = strdup(tmp);
724 }
725 } else {
726 td->nr_files = 1;
727 td->files = malloc(sizeof(struct fio_file));
728 f = &td->files[0];
729
730 memset(f, 0, sizeof(*f));
731 f->fd = -1;
732 f->file_name = strdup(jobname);
733 }
734
735 for_each_file(td, f, i) {
736 f->file_size = td->total_file_size / td->nr_files;
737 f->file_offset = td->start_offset;
738 }
739
bbfd6b00 740 fio_sem_init(&td->mutex, 0);
ebac4655
JA
741
742 td->clat_stat[0].min_val = td->clat_stat[1].min_val = ULONG_MAX;
743 td->slat_stat[0].min_val = td->slat_stat[1].min_val = ULONG_MAX;
744 td->bw_stat[0].min_val = td->bw_stat[1].min_val = ULONG_MAX;
745
ebac4655
JA
746 if (td->stonewall && td->thread_number > 1)
747 groupid++;
748
749 td->groupid = groupid;
750
751 if (setup_rate(td))
752 goto err;
753
ec94ec56 754 if (td->write_lat_log) {
ebac4655
JA
755 setup_log(&td->slat_log);
756 setup_log(&td->clat_log);
757 }
ec94ec56 758 if (td->write_bw_log)
ebac4655
JA
759 setup_log(&td->bw_log);
760
b4692828
JA
761 if (!td->name)
762 td->name = strdup(jobname);
01452055 763
3d60d1ed 764 ddir = td->ddir + (!td->sequential << 1) + (td->iomix << 2);
75154845 765
c6ae0a5b 766 if (!terse_output) {
b990b5c0 767 if (!job_add_num) {
2866c82d 768 if (td->io_ops->flags & FIO_CPUIO)
b990b5c0 769 fprintf(f_out, "%s: ioengine=cpu, cpuload=%u, cpucycle=%u\n", td->name, td->cpuload, td->cpucycle);
f8977ee6
JA
770 else {
771 char *c1, *c2, *c3, *c4;
772
773 c1 = to_kmg(td->min_bs[DDIR_READ]);
774 c2 = to_kmg(td->max_bs[DDIR_READ]);
775 c3 = to_kmg(td->min_bs[DDIR_WRITE]);
776 c4 = to_kmg(td->max_bs[DDIR_WRITE]);
777
d56cbab0 778 fprintf(f_out, "%s: (g=%d): rw=%s, bs=%s-%s/%s-%s, ioengine=%s, iodepth=%u\n", td->name, td->groupid, ddir_str[ddir], c1, c2, c3, c4, td->io_ops->name, td->iodepth);
f8977ee6
JA
779
780 free(c1);
781 free(c2);
782 free(c3);
783 free(c4);
784 }
b990b5c0 785 } else if (job_add_num == 1)
c6ae0a5b
JA
786 fprintf(f_out, "...\n");
787 }
ebac4655
JA
788
789 /*
790 * recurse add identical jobs, clear numjobs and stonewall options
791 * as they don't apply to sub-jobs
792 */
793 numjobs = td->numjobs;
794 while (--numjobs) {
795 struct thread_data *td_new = get_new_job(0, td);
796
797 if (!td_new)
798 goto err;
799
800 td_new->numjobs = 1;
801 td_new->stonewall = 0;
75154845 802 job_add_num = numjobs - 1;
ebac4655 803
75154845 804 if (add_job(td_new, jobname, job_add_num))
ebac4655
JA
805 goto err;
806 }
807 return 0;
808err:
809 put_job(td);
810 return -1;
811}
812
906c8d75
JA
813/*
814 * Initialize the various random states we need (random io, block size ranges,
815 * read/write mix, etc).
816 */
ebac4655
JA
817int init_random_state(struct thread_data *td)
818{
a6ccc7be 819 unsigned long seeds[4];
53cdc686 820 int fd, num_maps, blocks, i;
0ab8db89 821 struct fio_file *f;
ebac4655 822
f48b467c
JA
823 if (td->io_ops->flags & FIO_CPUIO)
824 return 0;
825
1ac267bb 826 fd = open("/dev/urandom", O_RDONLY);
ebac4655
JA
827 if (fd == -1) {
828 td_verror(td, errno);
829 return 1;
830 }
831
a6ccc7be 832 if (read(fd, seeds, sizeof(seeds)) < (int) sizeof(seeds)) {
ebac4655
JA
833 td_verror(td, EIO);
834 close(fd);
835 return 1;
836 }
837
838 close(fd);
839
6dfd46b9
JA
840 os_random_seed(seeds[0], &td->bsrange_state);
841 os_random_seed(seeds[1], &td->verify_state);
842 os_random_seed(seeds[2], &td->rwmix_state);
ebac4655
JA
843
844 if (td->sequential)
845 return 0;
846
9ebc27e1 847 if (td->rand_repeatable)
ee738499 848 seeds[3] = FIO_RANDSEED;
ebac4655 849
bb8895e0
JA
850 if (!td->norandommap) {
851 for_each_file(td, f, i) {
a00735e6 852 blocks = (f->file_size + td->rw_min_bs - 1) / td->rw_min_bs;
c7c280ed 853 num_maps = (blocks + BLOCKS_PER_MAP-1)/ BLOCKS_PER_MAP;
bb8895e0
JA
854 f->file_map = malloc(num_maps * sizeof(long));
855 f->num_maps = num_maps;
856 memset(f->file_map, 0, num_maps * sizeof(long));
857 }
53cdc686 858 }
ebac4655 859
6dfd46b9 860 os_random_seed(seeds[3], &td->random_state);
ebac4655
JA
861 return 0;
862}
863
864static void fill_cpu_mask(os_cpu_mask_t cpumask, int cpu)
865{
866#ifdef FIO_HAVE_CPU_AFFINITY
867 unsigned int i;
868
869 CPU_ZERO(&cpumask);
870
871 for (i = 0; i < sizeof(int) * 8; i++) {
872 if ((1 << i) & cpu)
873 CPU_SET(i, &cpumask);
874 }
875#endif
876}
877
ebac4655
JA
878static int is_empty_or_comment(char *line)
879{
880 unsigned int i;
881
882 for (i = 0; i < strlen(line); i++) {
883 if (line[i] == ';')
884 return 1;
885 if (!isspace(line[i]) && !iscntrl(line[i]))
886 return 0;
887 }
888
889 return 1;
890}
891
b4692828 892static int str_rw_cb(void *data, const char *mem)
ebac4655 893{
cb2c86fd
JA
894 struct thread_data *td = data;
895
ebac4655
JA
896 if (!strncmp(mem, "read", 4) || !strncmp(mem, "0", 1)) {
897 td->ddir = DDIR_READ;
898 td->sequential = 1;
899 return 0;
900 } else if (!strncmp(mem, "randread", 8)) {
901 td->ddir = DDIR_READ;
902 td->sequential = 0;
903 return 0;
904 } else if (!strncmp(mem, "write", 5) || !strncmp(mem, "1", 1)) {
905 td->ddir = DDIR_WRITE;
906 td->sequential = 1;
907 return 0;
908 } else if (!strncmp(mem, "randwrite", 9)) {
909 td->ddir = DDIR_WRITE;
910 td->sequential = 0;
911 return 0;
3d60d1ed 912 } else if (!strncmp(mem, "rw", 2)) {
1e97cce9 913 td->ddir = DDIR_READ;
3d60d1ed
JA
914 td->iomix = 1;
915 td->sequential = 1;
916 return 0;
917 } else if (!strncmp(mem, "randrw", 6)) {
1e97cce9 918 td->ddir = DDIR_READ;
3d60d1ed
JA
919 td->iomix = 1;
920 td->sequential = 0;
921 return 0;
ebac4655
JA
922 }
923
3b70d7e5 924 log_err("fio: data direction: read, write, randread, randwrite, rw, randrw\n");
ebac4655
JA
925 return 1;
926}
927
b4692828 928static int str_verify_cb(void *data, const char *mem)
ebac4655 929{
cb2c86fd
JA
930 struct thread_data *td = data;
931
ebac4655
JA
932 if (!strncmp(mem, "0", 1)) {
933 td->verify = VERIFY_NONE;
934 return 0;
935 } else if (!strncmp(mem, "md5", 3) || !strncmp(mem, "1", 1)) {
936 td->verify = VERIFY_MD5;
937 return 0;
938 } else if (!strncmp(mem, "crc32", 5)) {
939 td->verify = VERIFY_CRC32;
940 return 0;
941 }
942
3b70d7e5 943 log_err("fio: verify types: md5, crc32\n");
ebac4655
JA
944 return 1;
945}
946
313cb206
JA
947/*
948 * Check if mmap/mmaphuge has a :/foo/bar/file at the end. If so, return that.
949 */
950static char *get_mmap_file(const char *str)
951{
952 char *p = strstr(str, ":");
953
954 if (!p)
955 return NULL;
956
957 p++;
958 strip_blank_front(&p);
959 strip_blank_end(p);
960 return strdup(p);
961}
962
b4692828 963static int str_mem_cb(void *data, const char *mem)
ebac4655 964{
cb2c86fd
JA
965 struct thread_data *td = data;
966
ebac4655
JA
967 if (!strncmp(mem, "malloc", 6)) {
968 td->mem_type = MEM_MALLOC;
969 return 0;
d0bdaf49
JA
970 } else if (!strncmp(mem, "mmaphuge", 8)) {
971#ifdef FIO_HAVE_HUGETLB
d0bdaf49
JA
972 /*
973 * mmaphuge must be appended with the actual file
974 */
313cb206
JA
975 td->mmapfile = get_mmap_file(mem);
976 if (!td->mmapfile) {
d0bdaf49
JA
977 log_err("fio: mmaphuge:/path/to/file\n");
978 return 1;
979 }
980
d0bdaf49
JA
981 td->mem_type = MEM_MMAPHUGE;
982 return 0;
983#else
984 log_err("fio: mmaphuge not available\n");
985 return 1;
986#endif
ebac4655 987 } else if (!strncmp(mem, "mmap", 4)) {
313cb206
JA
988 /*
989 * Check if the user wants file backed memory. It's ok
990 * if there's no file given, we'll just use anon mamp then.
991 */
992 td->mmapfile = get_mmap_file(mem);
ebac4655
JA
993 td->mem_type = MEM_MMAP;
994 return 0;
74b025b0
JA
995 } else if (!strncmp(mem, "shmhuge", 7)) {
996#ifdef FIO_HAVE_HUGETLB
997 td->mem_type = MEM_SHMHUGE;
998 return 0;
999#else
1000 log_err("fio: shmhuge not available\n");
1001 return 1;
1002#endif
0268b8ba
JA
1003 } else if (!strncmp(mem, "shm", 3)) {
1004 td->mem_type = MEM_SHM;
1005 return 0;
ebac4655
JA
1006 }
1007
d0bdaf49 1008 log_err("fio: mem type: malloc, shm, shmhuge, mmap, mmaphuge\n");
ebac4655
JA
1009 return 1;
1010}
1011
b4692828 1012static int str_ioengine_cb(void *data, const char *str)
ebac4655 1013{
cb2c86fd
JA
1014 struct thread_data *td = data;
1015
2866c82d
JA
1016 td->io_ops = load_ioengine(td, str);
1017 if (td->io_ops)
b990b5c0 1018 return 0;
ebac4655 1019
08aae9a0 1020 log_err("fio: ioengine= libaio, posixaio, sync, mmap, sgio, splice, cpu, null\n");
5f350952 1021 log_err("fio: or specify path to dynamic ioengine module\n");
ebac4655
JA
1022 return 1;
1023}
1024
e1f36503
JA
1025static int str_lockmem_cb(void fio_unused *data, unsigned long *val)
1026{
1027 mlock_size = *val;
1028 return 0;
1029}
1030
34cfcdaf 1031#ifdef FIO_HAVE_IOPRIO
e1f36503
JA
1032static int str_prioclass_cb(void *data, unsigned int *val)
1033{
1034 struct thread_data *td = data;
1035
1036 td->ioprio |= *val << IOPRIO_CLASS_SHIFT;
1037 return 0;
1038}
1039
1040static int str_prio_cb(void *data, unsigned int *val)
1041{
1042 struct thread_data *td = data;
1043
1044 td->ioprio |= *val;
1045 return 0;
1046}
34cfcdaf 1047#endif
e1f36503
JA
1048
1049static int str_exitall_cb(void)
1050{
1051 exitall_on_terminate = 1;
1052 return 0;
1053}
1054
1055static int str_cpumask_cb(void *data, unsigned int *val)
1056{
1057 struct thread_data *td = data;
1058
1059 fill_cpu_mask(td->cpumask, *val);
1060 return 0;
1061}
1062
07261983
JA
1063/*
1064 * This is our [ini] type file parser.
1065 */
1e97cce9 1066static int parse_jobs_ini(char *file, int stonewall_flag)
ebac4655 1067{
e1f36503 1068 unsigned int global;
ebac4655 1069 struct thread_data *td;
fee3bb48 1070 char *string, *name;
ebac4655
JA
1071 fpos_t off;
1072 FILE *f;
1073 char *p;
0c7e37a0 1074 int ret = 0, stonewall;
ebac4655
JA
1075
1076 f = fopen(file, "r");
1077 if (!f) {
aea47d44 1078 perror("fopen job file");
ebac4655
JA
1079 return 1;
1080 }
1081
1082 string = malloc(4096);
1083 name = malloc(256);
fee3bb48 1084 memset(name, 0, 256);
ebac4655 1085
0c7e37a0 1086 stonewall = stonewall_flag;
7c124ac1
JA
1087 do {
1088 p = fgets(string, 4095, f);
1089 if (!p)
45410acb 1090 break;
ebac4655
JA
1091 if (is_empty_or_comment(p))
1092 continue;
fee3bb48 1093 if (sscanf(p, "[%255s]", name) != 1)
ebac4655
JA
1094 continue;
1095
1096 global = !strncmp(name, "global", 6);
1097
1098 name[strlen(name) - 1] = '\0';
1099
1100 td = get_new_job(global, &def_thread);
45410acb
JA
1101 if (!td) {
1102 ret = 1;
1103 break;
1104 }
ebac4655 1105
972cfd25
JA
1106 /*
1107 * Seperate multiple job files by a stonewall
1108 */
f9481919 1109 if (!global && stonewall) {
972cfd25
JA
1110 td->stonewall = stonewall;
1111 stonewall = 0;
1112 }
1113
ebac4655
JA
1114 fgetpos(f, &off);
1115 while ((p = fgets(string, 4096, f)) != NULL) {
1116 if (is_empty_or_comment(p))
1117 continue;
e1f36503 1118
b6754f9d 1119 strip_blank_front(&p);
7c124ac1
JA
1120
1121 if (p[0] == '[')
1122 break;
1123
4ae3f763 1124 strip_blank_end(p);
aea47d44 1125
e1f36503 1126 fgetpos(f, &off);
ebac4655 1127
45410acb
JA
1128 /*
1129 * Don't break here, continue parsing options so we
1130 * dump all the bad ones. Makes trial/error fixups
1131 * easier on the user.
1132 */
7c124ac1 1133 ret |= parse_option(p, options, td);
ebac4655 1134 }
ebac4655 1135
45410acb
JA
1136 if (!ret) {
1137 fsetpos(f, &off);
1138 ret = add_job(td, name, 0);
b1508cf9
JA
1139 } else {
1140 log_err("fio: job %s dropped\n", name);
1141 put_job(td);
45410acb 1142 }
7c124ac1 1143 } while (!ret);
ebac4655
JA
1144
1145 free(string);
1146 free(name);
1147 fclose(f);
45410acb 1148 return ret;
ebac4655
JA
1149}
1150
1151static int fill_def_thread(void)
1152{
1153 memset(&def_thread, 0, sizeof(def_thread));
1154
1155 if (fio_getaffinity(getpid(), &def_thread.cpumask) == -1) {
1156 perror("sched_getaffinity");
1157 return 1;
1158 }
1159
1160 /*
ee738499 1161 * fill default options
ebac4655 1162 */
ee738499
JA
1163 fill_default_options(&def_thread, options);
1164
972cfd25 1165 def_thread.timeout = def_timeout;
ec94ec56
JA
1166 def_thread.write_bw_log = write_bw_log;
1167 def_thread.write_lat_log = write_lat_log;
ee738499 1168
ebac4655
JA
1169#ifdef FIO_HAVE_DISK_UTIL
1170 def_thread.do_disk_util = 1;
1171#endif
1172
1173 return 0;
1174}
1175
0ab8db89 1176static void usage(void)
4785f995
JA
1177{
1178 printf("%s\n", fio_version_string);
b4692828
JA
1179 printf("\t--output\tWrite output to file\n");
1180 printf("\t--timeout\tRuntime in seconds\n");
1181 printf("\t--latency-log\tGenerate per-job latency logs\n");
1182 printf("\t--bandwidth-log\tGenerate per-job bandwidth logs\n");
1183 printf("\t--minimal\tMinimal (terse) output\n");
1184 printf("\t--version\tPrint version info and exit\n");
fd28ca49
JA
1185 printf("\t--help\t\tPrint this page\n");
1186 printf("\t--cmdhelp=cmd\tPrint command help, \"all\" for all of them\n");
4785f995
JA
1187}
1188
972cfd25 1189static int parse_cmd_line(int argc, char *argv[])
ebac4655 1190{
b4692828 1191 struct thread_data *td = NULL;
c2b1e753 1192 int c, ini_idx = 0, lidx, ret;
ebac4655 1193
b4692828 1194 while ((c = getopt_long(argc, argv, "", long_options, &lidx)) != -1) {
ebac4655 1195 switch (c) {
b4692828
JA
1196 case 't':
1197 def_timeout = atoi(optarg);
1198 break;
1199 case 'l':
1200 write_lat_log = 1;
1201 break;
1202 case 'w':
1203 write_bw_log = 1;
1204 break;
1205 case 'o':
1206 f_out = fopen(optarg, "w+");
1207 if (!f_out) {
1208 perror("fopen output");
1209 exit(1);
1210 }
1211 f_err = f_out;
1212 break;
1213 case 'm':
1214 terse_output = 1;
1215 break;
1216 case 'h':
1217 usage();
1218 exit(0);
fd28ca49 1219 case 'c':
29fc6afe
JA
1220 ret = show_cmd_help(options, optarg);
1221 exit(ret);
b4692828
JA
1222 case 'v':
1223 printf("%s\n", fio_version_string);
1224 exit(0);
1225 case FIO_GETOPT_JOB: {
1226 const char *opt = long_options[lidx].name;
1227 char *val = optarg;
1228
c2b1e753
JA
1229 if (!strncmp(opt, "name", 4) && td) {
1230 ret = add_job(td, td->name ?: "fio", 0);
1231 if (ret) {
1232 put_job(td);
1233 return 0;
1234 }
1235 td = NULL;
1236 }
b4692828 1237 if (!td) {
38d0adb0 1238 int global = !strncmp(val, "global", 6);
c2b1e753
JA
1239
1240 td = get_new_job(global, &def_thread);
b4692828
JA
1241 if (!td)
1242 return 0;
1243 }
38d0adb0 1244
b1508cf9
JA
1245 ret = parse_cmd_option(opt, val, options, td);
1246 if (ret) {
1247 log_err("fio: job dropped\n");
1248 put_job(td);
1249 td = NULL;
1250 }
b4692828
JA
1251 break;
1252 }
1253 default:
b4692828 1254 break;
ebac4655
JA
1255 }
1256 }
c9fad893 1257
b4692828 1258 if (td) {
c2b1e753 1259 ret = add_job(td, td->name ?: "fio", 0);
b4692828
JA
1260 if (ret)
1261 put_job(td);
972cfd25 1262 }
774a6177 1263
b4692828
JA
1264 while (optind < argc) {
1265 ini_idx++;
1266 ini_file = realloc(ini_file, ini_idx * sizeof(char *));
1267 ini_file[ini_idx - 1] = strdup(argv[optind]);
1268 optind++;
eb8bbf48 1269 }
972cfd25
JA
1270
1271 return ini_idx;
ebac4655
JA
1272}
1273
1274static void free_shm(void)
1275{
1276 struct shmid_ds sbuf;
1277
1278 if (threads) {
2c0ecd28 1279 shmdt((void *) threads);
ebac4655
JA
1280 threads = NULL;
1281 shmctl(shm_id, IPC_RMID, &sbuf);
1282 }
1283}
1284
906c8d75
JA
1285/*
1286 * The thread area is shared between the main process and the job
1287 * threads/processes. So setup a shared memory segment that will hold
1288 * all the job info.
1289 */
ebac4655
JA
1290static int setup_thread_area(void)
1291{
1292 /*
1293 * 1024 is too much on some machines, scale max_jobs if
1294 * we get a failure that looks like too large a shm segment
1295 */
1296 do {
906c8d75 1297 size_t size = max_jobs * sizeof(struct thread_data);
ebac4655 1298
906c8d75 1299 shm_id = shmget(0, size, IPC_CREAT | 0600);
ebac4655
JA
1300 if (shm_id != -1)
1301 break;
1302 if (errno != EINVAL) {
1303 perror("shmget");
1304 break;
1305 }
1306
1307 max_jobs >>= 1;
1308 } while (max_jobs);
1309
1310 if (shm_id == -1)
1311 return 1;
1312
1313 threads = shmat(shm_id, NULL, 0);
1314 if (threads == (void *) -1) {
1315 perror("shmat");
1316 return 1;
1317 }
1318
1319 atexit(free_shm);
1320 return 0;
1321}
1322
b4692828
JA
1323/*
1324 * Copy the fio options into the long options map, so we mirror
1325 * job and cmd line options.
1326 */
1327static void dupe_job_options(void)
1328{
1329 struct fio_option *o;
1330 unsigned int i;
1331
1332 i = 0;
1333 while (long_options[i].name)
1334 i++;
1335
1336 o = &options[0];
1337 while (o->name) {
1338 long_options[i].name = o->name;
1339 long_options[i].val = FIO_GETOPT_JOB;
1340 if (o->type == FIO_OPT_STR_SET)
1341 long_options[i].has_arg = no_argument;
1342 else
1343 long_options[i].has_arg = required_argument;
1344
1345 i++;
1346 o++;
1347 assert(i < FIO_JOB_OPTS + FIO_CMD_OPTS);
1348 }
1349}
1350
ebac4655
JA
1351int parse_options(int argc, char *argv[])
1352{
972cfd25
JA
1353 int job_files, i;
1354
b4692828
JA
1355 f_out = stdout;
1356 f_err = stderr;
1357
13335ddb
JA
1358 options_init(options);
1359
b4692828
JA
1360 dupe_job_options();
1361
ebac4655
JA
1362 if (setup_thread_area())
1363 return 1;
1364 if (fill_def_thread())
1365 return 1;
1366
972cfd25 1367 job_files = parse_cmd_line(argc, argv);
ebac4655 1368
972cfd25
JA
1369 for (i = 0; i < job_files; i++) {
1370 if (fill_def_thread())
1371 return 1;
0c7e37a0 1372 if (parse_jobs_ini(ini_file[i], i))
972cfd25 1373 return 1;
88c6ed80 1374 free(ini_file[i]);
972cfd25 1375 }
ebac4655 1376
88c6ed80 1377 free(ini_file);
b4692828
JA
1378
1379 if (!thread_number) {
1380 log_err("No jobs defined(s)\n");
b4692828
JA
1381 return 1;
1382 }
1383
ebac4655
JA
1384 return 0;
1385}