More random fixes
[fio.git] / fio.h
CommitLineData
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1#ifndef FIO_H
2#define FIO_H
3
4#include <sched.h>
5#include <limits.h>
6#include <pthread.h>
7#include <sys/time.h>
8#include <sys/resource.h>
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9#include <errno.h>
10#include <stdlib.h>
11#include <stdio.h>
6d6f031f 12#include <unistd.h>
34cfcdaf 13#include <string.h>
214e1eca 14#include <getopt.h>
cd14cc10 15#include <inttypes.h>
7101d9c2 16#include <assert.h>
ebac4655 17
317b95d0 18#include "compiler/compiler.h"
ebac4655 19#include "list.h"
e2887563 20#include "fifo.h"
4b87898e 21#include "rbtree.h"
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22#include "arch/arch.h"
23#include "os/os.h"
07739b57 24#include "mutex.h"
ebac4655 25
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26#ifdef FIO_HAVE_GUASI
27#include <guasi.h>
28#endif
29
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30enum fio_ddir {
31 DDIR_READ = 0,
32 DDIR_WRITE,
33 DDIR_SYNC,
f29b25a3 34 DDIR_INVAL = -1,
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35};
36
413dd459 37enum td_ddir {
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38 TD_DDIR_READ = 1 << 0,
39 TD_DDIR_WRITE = 1 << 1,
40 TD_DDIR_RAND = 1 << 2,
41 TD_DDIR_RW = TD_DDIR_READ | TD_DDIR_WRITE,
42 TD_DDIR_RANDREAD = TD_DDIR_READ | TD_DDIR_RAND,
7ff1c14b 43 TD_DDIR_RANDWRITE = TD_DDIR_WRITE | TD_DDIR_RAND,
b1ec1da6 44 TD_DDIR_RANDRW = TD_DDIR_RW | TD_DDIR_RAND,
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45};
46
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47/*
48 * Use for maintaining statistics
49 */
ebac4655 50struct io_stat {
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51 unsigned long max_val;
52 unsigned long min_val;
53 unsigned long samples;
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54
55 double mean;
56 double S;
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57};
58
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59/*
60 * A single data sample
61 */
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62struct io_sample {
63 unsigned long time;
64 unsigned long val;
1e97cce9 65 enum fio_ddir ddir;
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66};
67
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68/*
69 * Dynamically growing data sample log
70 */
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71struct io_log {
72 unsigned long nr_samples;
73 unsigned long max_samples;
74 struct io_sample *log;
75};
76
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77/*
78 * When logging io actions, this matches a single sent io_u
79 */
ebac4655 80struct io_piece {
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81 union {
82 struct rb_node rb_node;
83 struct list_head list;
84 };
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85 union {
86 int fileno;
87 struct fio_file *file;
88 };
ebac4655 89 unsigned long long offset;
a4f4fdd7 90 unsigned long len;
1e97cce9 91 enum fio_ddir ddir;
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92 union {
93 unsigned long delay;
94 unsigned int file_action;
95 };
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96};
97
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98enum {
99 IO_U_F_FREE = 1 << 0,
100 IO_U_F_FLIGHT = 1 << 1,
101};
102
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103struct thread_data;
104
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105/*
106 * The io unit
107 */
108struct io_u {
109 union {
110#ifdef FIO_HAVE_LIBAIO
111 struct iocb iocb;
112#endif
113#ifdef FIO_HAVE_POSIXAIO
114 struct aiocb aiocb;
115#endif
116#ifdef FIO_HAVE_SGIO
117 struct sg_io_hdr hdr;
a4f4fdd7 118#endif
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119#ifdef FIO_HAVE_GUASI
120 guasi_req_t greq;
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121#endif
122 };
123 struct timeval start_time;
124 struct timeval issue_time;
125
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126 /*
127 * Allocated/set buffer and length
128 */
6b9cea23 129 void *buf;
a4f4fdd7 130 unsigned long buflen;
ebac4655 131 unsigned long long offset;
d460eb31 132 unsigned long long endpos;
ebac4655 133
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134 /*
135 * IO engine state, may be different from above when we get
136 * partial transfers / residual data counts
137 */
cec6b55d 138 void *xfer_buf;
a4f4fdd7 139 unsigned long xfer_buflen;
cec6b55d 140
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141 unsigned int resid;
142 unsigned int error;
143
1e97cce9 144 enum fio_ddir ddir;
ebac4655 145
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146 /*
147 * io engine private data
148 */
149 union {
150 unsigned int index;
151 unsigned int seen;
152 };
153
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154 unsigned int flags;
155
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156 struct fio_file *file;
157
ebac4655 158 struct list_head list;
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159
160 /*
161 * Callback for io completion
162 */
36690c9b 163 int (*end_io)(struct thread_data *, struct io_u *);
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164};
165
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166/*
167 * io_ops->queue() return values
168 */
169enum {
170 FIO_Q_COMPLETED = 0, /* completed sync */
171 FIO_Q_QUEUED = 1, /* queued, will complete async */
755200a3 172 FIO_Q_BUSY = 2, /* no more room, call ->commit() */
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173};
174
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175#define FIO_HDR_MAGIC 0xf00baaef
176
177enum {
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178 VERIFY_NONE = 0, /* no verification */
179 VERIFY_MD5, /* md5 sum data blocks */
d77a7af3 180 VERIFY_CRC64, /* crc64 sum data blocks */
1c9e06ee 181 VERIFY_CRC32, /* crc32 sum data blocks */
969f7ed3 182 VERIFY_CRC16, /* crc16 sum data blocks */
1e154bdb 183 VERIFY_CRC7, /* crc7 sum data blocks */
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184 VERIFY_SHA256, /* sha256 sum data blocks */
185 VERIFY_SHA512, /* sha512 sum data blocks */
7437ee87 186 VERIFY_META, /* block_num, timestamp etc. */
36690c9b 187 VERIFY_NULL, /* pretend to verify */
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188};
189
1c9e06ee 190/*
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191 * A header structure associated with each checksummed data block. It is
192 * followed by a checksum specific header that contains the verification
193 * data.
1c9e06ee 194 */
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195struct verify_header {
196 unsigned int fio_magic;
197 unsigned int len;
198 unsigned int verify_type;
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199};
200
201struct vhdr_md5 {
202 uint32_t md5_digest[16];
203};
204struct vhdr_sha512 {
205 uint8_t sha512[128];
206};
207struct vhdr_sha256 {
208 uint8_t sha256[128];
209};
210struct vhdr_crc64 {
211 uint64_t crc64;
212};
213struct vhdr_crc32 {
214 uint32_t crc32;
215};
216struct vhdr_crc16 {
217 uint16_t crc16;
218};
219struct vhdr_crc7 {
220 uint8_t crc7;
ebac4655 221};
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222struct vhdr_meta {
223 uint64_t offset;
224 unsigned char thread;
225 unsigned short numberio;
226 unsigned long time_sec;
227 unsigned long time_usec;
228};
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229
230struct group_run_stats {
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231 unsigned long long max_run[2], min_run[2];
232 unsigned long long max_bw[2], min_bw[2];
e9b2a3fa 233 unsigned long long io_kb[2];
9104f874 234 unsigned long long agg[2];
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235};
236
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237/*
238 * What type of allocation to use for io buffers
239 */
240enum fio_memtype {
241 MEM_MALLOC = 0, /* ordinary malloc */
242 MEM_SHM, /* use shared memory segments */
74b025b0 243 MEM_SHMHUGE, /* use shared memory segments with huge pages */
e9c047a0 244 MEM_MMAP, /* use anonynomous mmap */
d0bdaf49 245 MEM_MMAPHUGE, /* memory mapped huge file */
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246};
247
248/*
249 * The type of object we are working on
250 */
251enum fio_filetype {
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252 FIO_TYPE_FILE = 1, /* plain file */
253 FIO_TYPE_BD, /* block device */
254 FIO_TYPE_CHAR, /* character device */
b5605e9d 255 FIO_TYPE_PIPE, /* pipe */
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256};
257
2866c82d 258enum fio_ioengine_flags {
1c9e06ee 259 FIO_SYNCIO = 1 << 0, /* io engine has synchronous ->queue */
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260 FIO_RAWIO = 1 << 1, /* some sort of direct/raw io */
261 FIO_DISKLESSIO = 1 << 2, /* no disk involved */
0263882a 262 FIO_NOEXTEND = 1 << 3, /* engine can't extend file */
62d984e2 263 FIO_NODISKUTIL = 1 << 4, /* diskutil can't handle filename */
b67740d3 264 FIO_UNIDIR = 1 << 5, /* engine is uni-directional */
1f809d15 265 FIO_NOIO = 1 << 6, /* thread does only pseudo IO */
ad830ed7 266 FIO_SIGQUIT = 1 << 7, /* needs SIGQUIT to exit */
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267};
268
f11bd94d 269enum fio_file_flags {
0ad920e7 270 FIO_FILE_OPEN = 1 << 0, /* file is open */
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271 FIO_FILE_CLOSING = 1 << 1, /* file being closed */
272 FIO_FILE_EXISTS = 1 << 2, /* file there */
273 FIO_FILE_EXTEND = 1 << 3, /* needs extend */
274 FIO_FILE_NOSORT = 1 << 4, /* don't sort verify blocks */
275 FIO_FILE_DONE = 1 << 5, /* io completed to this file */
276 FIO_SIZE_KNOWN = 1 << 6, /* size has been set */
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277};
278
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279/*
280 * Each thread_data structure has a number of files associated with it,
281 * this structure holds state information for a single file.
282 */
53cdc686 283struct fio_file {
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284 enum fio_filetype filetype;
285
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286 /*
287 * A file may not be a file descriptor, let the io engine decide
288 */
289 union {
290 unsigned long file_data;
e26f8f7a 291 int fd;
53cdc686 292 };
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293
294 /*
295 * filename and possible memory mapping
296 */
1315a68a 297 char *file_name;
53cdc686 298 void *mmap;
5e6c2067 299 unsigned int major, minor;
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300
301 /*
302 * size of the file, offset into file, and io size from that offset
303 */
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304 unsigned long long real_file_size;
305 unsigned long long file_offset;
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306 unsigned long long io_size;
307
53cdc686 308 unsigned long long last_pos;
02bcaa8c 309 unsigned long long last_completed_pos;
53cdc686 310
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311 /*
312 * block map for random io
313 */
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314 unsigned long *file_map;
315 unsigned int num_maps;
1c9e06ee 316 unsigned int last_free_lookup;
9b031dc8 317
0ad920e7 318 int references;
f11bd94d 319 enum fio_file_flags flags;
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320};
321
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322/*
323 * How many depth levels to log
324 */
325#define FIO_IO_U_MAP_NR 8
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326#define FIO_IO_U_LAT_U_NR 10
327#define FIO_IO_U_LAT_M_NR 12
b2560f3c 328
079ad09b 329struct thread_stat {
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330 char *name;
331 char *verror;
332 int error;
333 int groupid;
334 pid_t pid;
335 char *description;
6586ee89 336 int members;
756867bd 337
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338 struct io_log *slat_log;
339 struct io_log *clat_log;
340 struct io_log *bw_log;
341
342 /*
343 * bandwidth and latency stats
344 */
345 struct io_stat clat_stat[2]; /* completion latency */
346 struct io_stat slat_stat[2]; /* submission latency */
347 struct io_stat bw_stat[2]; /* bandwidth stats */
348
349 unsigned long long stat_io_bytes[2];
350 struct timeval stat_sample_time[2];
351
352 /*
353 * fio system usage accounting
354 */
355 struct rusage ru_start;
356 struct rusage ru_end;
357 unsigned long usr_time;
358 unsigned long sys_time;
359 unsigned long ctx;
81887d5d 360 unsigned long minf, majf;
079ad09b 361
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362 /*
363 * IO depth and latency stats
364 */
365 unsigned int io_u_map[FIO_IO_U_MAP_NR];
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366 unsigned int io_u_lat_u[FIO_IO_U_LAT_U_NR];
367 unsigned int io_u_lat_m[FIO_IO_U_LAT_M_NR];
b3605062 368 unsigned long total_io_u[2];
30061b97 369 unsigned long short_io_u[2];
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370
371 unsigned long long io_bytes[2];
372 unsigned long runtime[2];
373 unsigned long total_run_time;
b2560f3c 374};
71619dc2 375
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376struct bssplit {
377 unsigned int bs;
378 unsigned char perc;
379};
380
2dc1bbeb 381struct thread_options {
b1ec1da6 382 int pad;
61697c37 383 char *description;
b4692828 384 char *name;
ef899b63 385 char *directory;
13f8e2d2 386 char *filename;
2dc1bbeb 387 char *opendir;
09629a90 388 char *ioengine;
413dd459 389 enum td_ddir td_ddir;
211097b2 390 unsigned int ddir_nr;
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391 unsigned int iodepth;
392 unsigned int iodepth_low;
393 unsigned int iodepth_batch;
394
395 unsigned long long size;
aa31f1f1 396 unsigned int fill_device;
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397 unsigned long long file_size_low;
398 unsigned long long file_size_high;
399 unsigned long long start_offset;
400
401 unsigned int bs[2];
402 unsigned int min_bs[2];
403 unsigned int max_bs[2];
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404 struct bssplit *bssplit;
405 unsigned int bssplit_nr;
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406
407 unsigned int nr_files;
408 unsigned int open_files;
e9c047a0 409
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410 unsigned int odirect;
411 unsigned int invalidate_cache;
412 unsigned int create_serialize;
413 unsigned int create_fsync;
414 unsigned int end_fsync;
415 unsigned int sync_io;
416 unsigned int verify;
e84c73a8 417 unsigned int do_verify;
160b966d 418 unsigned int verifysort;
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419 unsigned int verify_interval;
420 unsigned int verify_offset;
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421 unsigned int verify_pattern;
422 unsigned int verify_pattern_bytes;
a12a3b4d 423 unsigned int verify_fatal;
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424 unsigned int use_thread;
425 unsigned int unlink;
426 unsigned int do_disk_util;
427 unsigned int override_sync;
428 unsigned int rand_repeatable;
429 unsigned int write_lat_log;
430 unsigned int write_bw_log;
bb8895e0 431 unsigned int norandommap;
690adba3 432 unsigned int bs_unaligned;
ebb1415f 433 unsigned int fsync_on_close;
e9c047a0 434
56bb17f2 435 unsigned int hugepage_size;
a00735e6 436 unsigned int rw_min_bs;
ebac4655 437 unsigned int thinktime;
48097d5c 438 unsigned int thinktime_spin;
9c1f7434 439 unsigned int thinktime_blocks;
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440 unsigned int fsync_blocks;
441 unsigned int start_delay;
0db26797 442 unsigned long long timeout;
ebac4655 443 unsigned int overwrite;
ebac4655 444 unsigned int bw_avg_time;
ebac4655 445 unsigned int loops;
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446 unsigned long long zone_size;
447 unsigned long long zone_skip;
e9c047a0 448 enum fio_memtype mem_type;
2dc1bbeb 449
ebac4655 450 unsigned int stonewall;
b3d62a75 451 unsigned int new_group;
ebac4655 452 unsigned int numjobs;
ebac4655 453 os_cpu_mask_t cpumask;
375b2695 454 unsigned int cpumask_set;
aea47d44 455 unsigned int iolog;
a6ccc7be 456 unsigned int rwmixcycle;
e47f799f 457 unsigned int rwmix[2];
b6f4d880 458 unsigned int nice;
0aabe160 459 unsigned int file_service_type;
b2560f3c 460 unsigned int group_reporting;
d2f3ac35 461 unsigned int fadvise_hint;
e9459e5a 462 unsigned int zero_buffers;
cf4464ca 463 unsigned int time_based;
aea47d44 464
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465 char *read_iolog_file;
466 char *write_iolog_file;
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467
468 /*
469 * Pre-run and post-run shell
470 */
471 char *exec_prerun;
472 char *exec_postrun;
473
474 unsigned int rate;
475 unsigned int ratemin;
476 unsigned int ratecycle;
477 unsigned int rate_iops;
478 unsigned int rate_iops_min;
479
480 char *ioscheduler;
481
482 /*
483 * CPU "io" cycle burner
484 */
485 unsigned int cpuload;
486 unsigned int cpucycle;
487};
488
e4e33258
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489#define FIO_VERROR_SIZE 128
490
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491/*
492 * This describes a single thread/process executing a fio job.
493 */
494struct thread_data {
495 struct thread_options o;
e4e33258 496 char verror[FIO_VERROR_SIZE];
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497 pthread_t thread;
498 int thread_number;
499 int groupid;
500 struct thread_stat ts;
501 struct fio_file *files;
502 unsigned int files_index;
503 unsigned int nr_open_files;
1020a139 504 unsigned int nr_done_files;
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505 unsigned int nr_normal_files;
506 union {
507 unsigned int next_file;
508 os_random_state_t next_file_state;
509 };
510 int error;
20e354ef 511 int done;
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512 pid_t pid;
513 char *orig_buffer;
514 size_t orig_buffer_size;
515 volatile int terminate;
516 volatile int runstate;
517 unsigned int ioprio;
ac684785 518 unsigned int ioprio_set;
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519 unsigned int last_was_sync;
520
521 char *mmapfile;
522 int mmapfd;
523
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524 void *iolog_buf;
525 FILE *iolog_f;
ebac4655 526
da86774e 527 char *sysfs_root;
da86774e 528
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529 os_random_state_t bsrange_state;
530 os_random_state_t verify_state;
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531
532 int shm_id;
533
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534 /*
535 * IO engine hooks, contains everything needed to submit an io_u
536 * to any of the available IO engines.
537 */
2866c82d 538 struct ioengine_ops *io_ops;
ebac4655 539
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540 /*
541 * Current IO depth and list of free and busy io_u's.
542 */
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543 unsigned int cur_depth;
544 struct list_head io_u_freelist;
545 struct list_head io_u_busylist;
755200a3 546 struct list_head io_u_requeues;
cb5ab512 547 unsigned int io_u_queued;
ebac4655 548
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549 /*
550 * Rate state
551 */
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552 unsigned long rate_usec_cycle;
553 long rate_pending_usleep;
554 unsigned long rate_bytes;
4e991c23 555 unsigned long rate_blocks;
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556 struct timeval lastrate;
557
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558 unsigned long long total_io_size;
559
755200a3 560 unsigned long io_issues[2];
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561 unsigned long long io_blocks[2];
562 unsigned long long io_bytes[2];
48f5abd3 563 unsigned long long io_skip_bytes;
9104f874 564 unsigned long long this_io_bytes[2];
079ad09b 565 unsigned long long zone_bytes;
07739b57 566 struct fio_sem *mutex;
ebac4655 567
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568 /*
569 * State for random io, a bitmap of blocks done vs not done
570 */
6dfd46b9 571 os_random_state_t random_state;
ebac4655 572
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573 struct timeval start; /* start of this loop */
574 struct timeval epoch; /* time job was started */
38d77cae 575 struct timeval rw_end[2];
a61eddec 576 struct timeval last_issue;
38d77cae 577 unsigned int rw_end_set[2];
ebac4655 578
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579 /*
580 * read/write mixed workload state
581 */
6dfd46b9 582 os_random_state_t rwmix_state;
afe24a5a 583 unsigned long long rwmix_bytes;
a6ccc7be 584 struct timeval rwmix_switch;
e9c047a0 585 enum fio_ddir rwmix_ddir;
211097b2 586 unsigned int ddir_nr;
a6ccc7be 587
e9c047a0 588 /*
8de8f047
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589 * IO history logs for verification. We use a tree for sorting,
590 * if we are overwriting. Otherwise just use a fifo.
e9c047a0 591 */
4b87898e 592 struct rb_root io_hist_tree;
8de8f047
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593 struct list_head io_hist_list;
594
595 /*
596 * For IO replaying
597 */
aea47d44 598 struct list_head io_log_list;
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599
600 /*
601 * timeout handling
602 */
603 struct timeval timeout_end;
604 struct itimerval timer;
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605
606 /*
607 * for fileservice, how often to switch to a new file
608 */
609 unsigned int file_service_nr;
610 unsigned int file_service_left;
611 struct fio_file *file_service_file;
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612
613 /*
614 * For generating file sizes
615 */
616 os_random_state_t file_size_state;
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617};
618
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619/*
620 * roundrobin available files, or choose one at random.
621 */
622enum {
623 FIO_FSERVICE_RANDOM = 1,
624 FIO_FSERVICE_RR = 2,
625};
626
e592a06b
AC
627/*
628 * when should interactive ETA output be generated
629 */
630enum {
631 FIO_ETA_AUTO,
632 FIO_ETA_ALWAYS,
633 FIO_ETA_NEVER,
634};
635
433afcb4
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636/*
637 * 30 second per-io_u timeout, with 5 second intervals to avoid resetting
638 * the timer on each queue operation.
639 */
640#define IO_U_TIMEOUT_INC 5
641#define IO_U_TIMEOUT 30
642
e1161c32 643#define __td_verror(td, err, msg, func) \
ebac4655 644 do { \
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645 if ((td)->error) \
646 break; \
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647 int e = (err); \
648 (td)->error = e; \
e1161c32 649 snprintf(td->verror, sizeof(td->verror) - 1, "file:%s:%d, func=%s, error=%s", __FILE__, __LINE__, (func), (msg)); \
ebac4655
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650 } while (0)
651
b990b5c0 652
e1161c32
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653#define td_verror(td, err, func) \
654 __td_verror((td), (err), strerror((err)), (func))
655#define td_vmsg(td, err, msg, func) \
656 __td_verror((td), (err), (msg), (func))
b990b5c0 657
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658extern int exitall_on_terminate;
659extern int thread_number;
9cedf167 660extern int nr_process, nr_thread;
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661extern int shm_id;
662extern int groupid;
c6ae0a5b 663extern int terse_output;
eb8bbf48
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664extern FILE *f_out;
665extern FILE *f_err;
53cdc686 666extern int temp_stall_ts;
1e97cce9 667extern unsigned long long mlock_size;
cfc99db7 668extern unsigned long page_mask, page_size;
4241ea8f 669extern int read_only;
e592a06b 670extern int eta_print;
01f06b63 671extern char *job_section;
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672
673extern struct thread_data *threads;
674
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675#define td_read(td) ((td)->o.td_ddir & TD_DDIR_READ)
676#define td_write(td) ((td)->o.td_ddir & TD_DDIR_WRITE)
677#define td_rw(td) (((td)->o.td_ddir & TD_DDIR_RW) == TD_DDIR_RW)
678#define td_random(td) ((td)->o.td_ddir & TD_DDIR_RAND)
ebac4655 679
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680static inline void fio_ro_check(struct thread_data *td, struct io_u *io_u)
681{
682 assert(!(io_u->ddir == DDIR_WRITE && !td_write(td)));
683}
684
ebac4655 685#define BLOCKS_PER_MAP (8 * sizeof(long))
84422acd 686#define TO_MAP_BLOCK(td, f, b) (b)
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687#define RAND_MAP_IDX(td, f, b) (TO_MAP_BLOCK(td, f, b) / BLOCKS_PER_MAP)
688#define RAND_MAP_BIT(td, f, b) (TO_MAP_BLOCK(td, f, b) & (BLOCKS_PER_MAP - 1))
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689
690#define MAX_JOBS (1024)
691
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692static inline int should_fsync(struct thread_data *td)
693{
694 if (td->last_was_sync)
695 return 0;
2dc1bbeb 696 if (td->o.odirect)
87dc1ab1 697 return 0;
2dc1bbeb 698 if (td_write(td) || td_rw(td) || td->o.override_sync)
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699 return 1;
700
701 return 0;
702}
703
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704/*
705 * Disk utils as read in /sys/block/<dev>/stat
706 */
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707struct disk_util_stat {
708 unsigned ios[2];
709 unsigned merges[2];
710 unsigned long long sectors[2];
711 unsigned ticks[2];
712 unsigned io_ticks;
713 unsigned time_in_queue;
714};
715
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716/*
717 * Per-device disk util management
718 */
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719struct disk_util {
720 struct list_head list;
721
722 char *name;
e11c410c 723 char *sysfs_root;
ebac4655 724 char path[256];
07e5b264 725 int major, minor;
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726
727 struct disk_util_stat dus;
728 struct disk_util_stat last_dus;
729
730 unsigned long msec;
731 struct timeval time;
732};
733
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734#define DISK_UTIL_MSEC (250)
735
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736/*
737 * Log exports
738 */
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739enum file_log_act {
740 FIO_LOG_ADD_FILE,
741 FIO_LOG_OPEN_FILE,
742 FIO_LOG_CLOSE_FILE,
743};
744
72cb971b 745extern int __must_check read_iolog_get(struct thread_data *, struct io_u *);
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746extern void log_io_u(struct thread_data *, struct io_u *);
747extern void log_file(struct thread_data *, struct fio_file *, enum file_log_act);
72cb971b 748extern int __must_check init_iolog(struct thread_data *td);
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749extern void log_io_piece(struct thread_data *, struct io_u *);
750extern void prune_io_piece_log(struct thread_data *);
751extern void write_iolog_close(struct thread_data *);
752
753/*
754 * Logging
755 */
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756extern void add_clat_sample(struct thread_data *, enum fio_ddir, unsigned long);
757extern void add_slat_sample(struct thread_data *, enum fio_ddir, unsigned long);
758extern void add_bw_sample(struct thread_data *, enum fio_ddir, struct timeval *);
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759extern void show_run_stats(void);
760extern void init_disk_util(struct thread_data *);
761extern void update_rusage_stat(struct thread_data *);
762extern void update_io_ticks(void);
763extern void disk_util_timer_arm(void);
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764extern void setup_log(struct io_log **);
765extern void finish_log(struct thread_data *, struct io_log *, const char *);
bb3884d8 766extern void __finish_log(struct io_log *, const char *);
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767extern struct io_log *agg_io_log[2];
768extern int write_bw_log;
769extern void add_agg_sample(unsigned long, enum fio_ddir);
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770
771/*
772 * Time functions
773 */
10927316
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774extern unsigned long long utime_since(struct timeval *, struct timeval *);
775extern unsigned long long utime_since_now(struct timeval *);
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776extern unsigned long mtime_since(struct timeval *, struct timeval *);
777extern unsigned long mtime_since_now(struct timeval *);
778extern unsigned long time_since_now(struct timeval *);
263e529f 779extern unsigned long mtime_since_genesis(void);
b990b5c0 780extern void __usec_sleep(unsigned int);
6796209a 781extern void usec_sleep(struct thread_data *, unsigned long);
413dd459 782extern void rate_throttle(struct thread_data *, unsigned long, unsigned int);
6043c579 783extern void fill_start_time(struct timeval *);
02bcaa8c 784extern void fio_gettime(struct timeval *, void *);
a2f77c9f 785extern void set_genesis_time(void);
6796209a 786
8914a9d8 787/*
214e1eca 788 * Init/option functions
8914a9d8 789 */
72cb971b 790extern int __must_check parse_options(int, char **);
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791extern int fio_option_parse(struct thread_data *, const char *);
792extern int fio_cmd_option_parse(struct thread_data *, const char *, char *);
793extern void fio_fill_default_options(struct thread_data *);
794extern int fio_show_option_help(const char *);
795extern void fio_options_dup_and_init(struct option *);
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796extern void options_mem_dupe(struct thread_data *);
797extern void options_mem_free(struct thread_data *);
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798#define FIO_GETOPT_JOB 0x89988998
799#define FIO_NR_OPTIONS 128
8914a9d8 800
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801/*
802 * File setup/shutdown
803 */
804extern void close_files(struct thread_data *);
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805extern int __must_check setup_files(struct thread_data *);
806extern int __must_check open_files(struct thread_data *);
807extern int __must_check file_invalidate_cache(struct thread_data *, struct fio_file *);
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808extern int __must_check generic_open_file(struct thread_data *, struct fio_file *);
809extern void generic_close_file(struct thread_data *, struct fio_file *);
f29b25a3 810extern int add_file(struct thread_data *, const char *);
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811extern void get_file(struct fio_file *);
812extern void put_file(struct thread_data *, struct fio_file *);
bbf6b540 813extern int add_dir_files(struct thread_data *, const char *);
68727076 814extern int init_random_map(struct thread_data *);
cade3ef4 815extern void dup_files(struct thread_data *, struct thread_data *);
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816extern int get_fileno(struct thread_data *, const char *);
817extern void free_release_files(struct thread_data *);
53cdc686 818
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819/*
820 * ETA/status stuff
821 */
822extern void print_thread_status(void);
823extern void print_status_init(int);
824
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825/*
826 * disk util stuff
827 */
828#ifdef FIO_HAVE_DISK_UTIL
829extern void show_disk_util(void);
830extern void disk_util_timer_arm(void);
831extern void init_disk_util(struct thread_data *);
832extern void update_io_ticks(void);
833#else
834#define show_disk_util()
835#define disk_util_timer_arm()
836#define init_disk_util(td)
837#define update_io_ticks()
838#endif
839
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840/*
841 * Thread life cycle. Once a thread has a runstate beyond TD_INITIALIZED, it
842 * will never back again. It may cycle between running/verififying/fsyncing.
843 * Once the thread reaches TD_EXITED, it is just waiting for the core to
844 * reap it.
845 */
846enum {
847 TD_NOT_CREATED = 0,
848 TD_CREATED,
849 TD_INITIALIZED,
850 TD_RUNNING,
851 TD_VERIFYING,
852 TD_FSYNCING,
853 TD_EXITED,
854 TD_REAPED,
855};
856
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857/*
858 * Verify helpers
859 */
860extern void populate_verify_io_u(struct thread_data *, struct io_u *);
b2fdda43 861extern int __must_check get_next_verify(struct thread_data *td, struct io_u *);
36690c9b 862extern int __must_check verify_io_u(struct thread_data *, struct io_u *);
e29d1b70 863
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864/*
865 * Memory helpers
866 */
b2fdda43 867extern int __must_check fio_pin_memory(void);
2f9ade3c 868extern void fio_unpin_memory(void);
b2fdda43 869extern int __must_check allocate_io_mem(struct thread_data *);
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870extern void free_io_mem(struct thread_data *);
871
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872/*
873 * io unit handling
874 */
875#define queue_full(td) list_empty(&(td)->io_u_freelist)
876extern struct io_u *__get_io_u(struct thread_data *);
3d7c391d 877extern struct io_u *get_io_u(struct thread_data *);
10ba535a 878extern void put_io_u(struct thread_data *, struct io_u *);
755200a3 879extern void requeue_io_u(struct thread_data *, struct io_u **);
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880extern long __must_check io_u_sync_complete(struct thread_data *, struct io_u *);
881extern long __must_check io_u_queued_complete(struct thread_data *, int);
7e77dd02 882extern void io_u_queued(struct thread_data *, struct io_u *);
5451792e 883extern void io_u_log_error(struct thread_data *, struct io_u *);
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884extern void io_u_init_timeout(void);
885extern void io_u_set_timeout(struct thread_data *);
b3605062 886extern void io_u_mark_depth(struct thread_data *, struct io_u *);
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887
888/*
889 * io engine entry points
890 */
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891extern int __must_check td_io_init(struct thread_data *);
892extern int __must_check td_io_prep(struct thread_data *, struct io_u *);
893extern int __must_check td_io_queue(struct thread_data *, struct io_u *);
894extern int __must_check td_io_sync(struct thread_data *, struct fio_file *);
e7d2e616 895extern int __must_check td_io_getevents(struct thread_data *, unsigned int, unsigned int, struct timespec *);
b2fdda43 896extern int __must_check td_io_commit(struct thread_data *);
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897extern int __must_check td_io_open_file(struct thread_data *, struct fio_file *);
898extern void td_io_close_file(struct thread_data *, struct fio_file *);
10ba535a 899
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900/*
901 * blktrace support
902 */
5e62c22a 903#ifdef FIO_HAVE_BLKTRACE
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904extern int is_blktrace(const char *);
905extern int load_blktrace(struct thread_data *, const char *);
5e62c22a 906#endif
fb7b71a3 907
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908/*
909 * If logging output to a file, stderr should go to both stderr and f_err
910 */
911#define log_err(args...) do { \
912 fprintf(f_err, ##args); \
913 if (f_err != stderr) \
914 fprintf(stderr, ##args); \
915 } while (0)
916
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917#define log_info(args...) fprintf(f_out, ##args)
918
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919FILE *get_f_out(void);
920FILE *get_f_err(void);
921
2866c82d 922struct ioengine_ops {
5f350952 923 struct list_head list;
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924 char name[16];
925 int version;
926 int flags;
ea2877a4 927 int (*setup)(struct thread_data *);
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928 int (*init)(struct thread_data *);
929 int (*prep)(struct thread_data *, struct io_u *);
930 int (*queue)(struct thread_data *, struct io_u *);
755200a3 931 int (*commit)(struct thread_data *);
e7d2e616 932 int (*getevents)(struct thread_data *, unsigned int, unsigned int, struct timespec *);
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933 struct io_u *(*event)(struct thread_data *, int);
934 int (*cancel)(struct thread_data *, struct io_u *);
935 void (*cleanup)(struct thread_data *);
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936 int (*open_file)(struct thread_data *, struct fio_file *);
937 void (*close_file)(struct thread_data *, struct fio_file *);
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938 void *data;
939 void *dlhandle;
940};
941
1e204992 942#define FIO_IOOPS_VERSION 8
2866c82d 943
b4692828 944extern struct ioengine_ops *load_ioengine(struct thread_data *, const char *);
b2fdda43 945extern void register_ioengine(struct ioengine_ops *);
5f350952 946extern void unregister_ioengine(struct ioengine_ops *);
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947extern void close_ioengine(struct thread_data *);
948
949/*
950 * Mark unused variables passed to ops functions as unused, to silence gcc
951 */
952#define fio_unused __attribute((__unused__))
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953#define fio_init __attribute__((constructor))
954#define fio_exit __attribute__((destructor))
2866c82d 955
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956#define for_each_td(td, i) \
957 for ((i) = 0, (td) = &threads[0]; (i) < (int) thread_number; (i)++, (td)++)
53cdc686 958#define for_each_file(td, f, i) \
2dc1bbeb 959 for ((i) = 0, (f) = &(td)->files[0]; (i) < (td)->o.nr_files; (i)++, (f)++)
53cdc686 960
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961#define fio_assert(td, cond) do { \
962 if (!(cond)) { \
340fd243 963 int *__foo = NULL; \
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964 fprintf(stderr, "file:%s:%d, assert %s failed\n", __FILE__, __LINE__, #cond); \
965 (td)->runstate = TD_EXITED; \
437c9b71 966 (td)->error = EFAULT; \
340fd243 967 *__foo = 0; \
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968 } \
969} while (0)
970
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971static inline void clear_error(struct thread_data *td)
972{
973 td->error = 0;
974 td->verror[0] = '\0';
975}
976
ee56ad50 977enum {
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978 FD_PROCESS = 0,
979 FD_FILE,
980 FD_IO,
981 FD_MEM,
982 FD_BLKTRACE,
983 FD_VERIFY,
84422acd 984 FD_RANDOM,
bd6f78b2 985 FD_DEBUG_MAX,
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986};
987
79e48f72 988#ifdef FIO_INC_DEBUG
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989struct debug_level {
990 const char *name;
991 unsigned long shift;
992};
993extern struct debug_level debug_levels[];
994
ee56ad50 995extern unsigned long fio_debug;
79e48f72 996
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997#define dprint(type, str, args...) \
998 do { \
999 assert(type < FD_DEBUG_MAX); \
1000 if ((((1 << type)) & fio_debug) == 0) \
1001 break; \
1002 log_info("%-8s ", debug_levels[(type)].name); \
1003 log_info(str, ##args); \
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1004 } while (0)
1005
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1006static inline void dprint_io_u(struct io_u *io_u, const char *p)
1007{
1008 struct fio_file *f = io_u->file;
1009
1010 dprint(FD_IO, "%s: io_u %p: off=%llu/len=%lu/ddir=%d", p, io_u,
1011 io_u->offset, io_u->buflen, io_u->ddir);
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1012 if (fio_debug & (1 << FD_IO)) {
1013 if (f)
1014 log_info("/%s", f->file_name);
1015
1016 log_info("\n");
1017 }
2ba1c290 1018}
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1019#else
1020#define dprint(type, str, args...)
1021#define dprint_io_u(io_u, p)
1022#endif
2ba1c290 1023
ebac4655 1024#endif