projects / fio.git / blame_incremental
? search:
summary | shortlog | log | commit | commitdiff | tree
blob | blame (non-incremental) | history | HEAD
Properly initialize md5 hash seed
[fio.git] / fio.h
... / ...
CommitLineData
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>
9#include <errno.h>
10#include <stdlib.h>
11#include <stdio.h>
12#include <unistd.h>
13#include <string.h>
14#include <getopt.h>
15
16#include "compiler/compiler.h"
17#include "list.h"
18#include "fifo.h"
19#include "rbtree.h"
20#include "md5.h"
21#include "crc64.h"
22#include "crc32.h"
23#include "crc16.h"
24#include "crc7.h"
25#include "arch/arch.h"
26#include "os/os.h"
27#include "mutex.h"
28
29#ifdef FIO_HAVE_SYSLET
30#include "syslet.h"
31#endif
32
33#ifdef FIO_HAVE_GUASI
34#include <guasi.h>
35#endif
36
37enum fio_ddir {
38 DDIR_READ = 0,
39 DDIR_WRITE,
40 DDIR_SYNC,
41 DDIR_INVAL = -1,
42};
43
44enum td_ddir {
45 TD_DDIR_READ = 1 << 0,
46 TD_DDIR_WRITE = 1 << 1,
47 TD_DDIR_RAND = 1 << 2,
48 TD_DDIR_RW = TD_DDIR_READ | TD_DDIR_WRITE,
49 TD_DDIR_RANDREAD = TD_DDIR_READ | TD_DDIR_RAND,
50 TD_DDIR_RANDWRITE = TD_DDIR_WRITE | TD_DDIR_RAND,
51 TD_DDIR_RANDRW = TD_DDIR_RW | TD_DDIR_RAND,
52};
53
54/*
55 * Use for maintaining statistics
56 */
57struct io_stat {
58 unsigned long max_val;
59 unsigned long min_val;
60 unsigned long samples;
61
62 double mean;
63 double S;
64};
65
66/*
67 * A single data sample
68 */
69struct io_sample {
70 unsigned long time;
71 unsigned long val;
72 enum fio_ddir ddir;
73};
74
75/*
76 * Dynamically growing data sample log
77 */
78struct io_log {
79 unsigned long nr_samples;
80 unsigned long max_samples;
81 struct io_sample *log;
82};
83
84/*
85 * When logging io actions, this matches a single sent io_u
86 */
87struct io_piece {
88 union {
89 struct rb_node rb_node;
90 struct list_head list;
91 };
92 union {
93 int fileno;
94 struct fio_file *file;
95 };
96 unsigned long long offset;
97 unsigned long len;
98 enum fio_ddir ddir;
99 union {
100 unsigned long delay;
101 unsigned int file_action;
102 };
103};
104
105#ifdef FIO_HAVE_SYSLET
106struct syslet_req {
107 struct syslet_uatom atom; /* the atom to submit */
108 struct syslet_uatom *head; /* head of the sequence */
109 long ret; /* syscall return value */
110};
111#endif
112
113enum {
114 IO_U_F_FREE = 1 << 0,
115 IO_U_F_FLIGHT = 1 << 1,
116};
117
118struct thread_data;
119
120/*
121 * The io unit
122 */
123struct io_u {
124 union {
125#ifdef FIO_HAVE_LIBAIO
126 struct iocb iocb;
127#endif
128#ifdef FIO_HAVE_POSIXAIO
129 struct aiocb aiocb;
130#endif
131#ifdef FIO_HAVE_SGIO
132 struct sg_io_hdr hdr;
133#endif
134#ifdef FIO_HAVE_SYSLET
135 struct syslet_req req;
136#endif
137#ifdef FIO_HAVE_GUASI
138 guasi_req_t greq;
139#endif
140 };
141 struct timeval start_time;
142 struct timeval issue_time;
143
144 /*
145 * Allocated/set buffer and length
146 */
147 void *buf;
148 unsigned long buflen;
149 unsigned long long offset;
150 unsigned long long endpos;
151
152 /*
153 * IO engine state, may be different from above when we get
154 * partial transfers / residual data counts
155 */
156 void *xfer_buf;
157 unsigned long xfer_buflen;
158
159 unsigned int resid;
160 unsigned int error;
161
162 enum fio_ddir ddir;
163
164 /*
165 * io engine private data
166 */
167 union {
168 unsigned int index;
169 unsigned int seen;
170 };
171
172 unsigned int flags;
173
174 struct fio_file *file;
175
176 struct list_head list;
177
178 /*
179 * Callback for io completion
180 */
181 int (*end_io)(struct thread_data *, struct io_u *);
182};
183
184/*
185 * io_ops->queue() return values
186 */
187enum {
188 FIO_Q_COMPLETED = 0, /* completed sync */
189 FIO_Q_QUEUED = 1, /* queued, will complete async */
190 FIO_Q_BUSY = 2, /* no more room, call ->commit() */
191};
192
193#define FIO_HDR_MAGIC 0xf00baaef
194
195enum {
196 VERIFY_NONE = 0, /* no verification */
197 VERIFY_MD5, /* md5 sum data blocks */
198 VERIFY_CRC64, /* crc64 sum data blocks */
199 VERIFY_CRC32, /* crc32 sum data blocks */
200 VERIFY_CRC16, /* crc16 sum data blocks */
201 VERIFY_CRC7, /* crc7 sum data blocks */
202 VERIFY_NULL, /* pretend to verify */
203};
204
205/*
206 * A header structure associated with each checksummed data block
207 */
208struct verify_header {
209 unsigned int fio_magic;
210 unsigned int len;
211 unsigned int verify_type;
212 union {
213 char md5_digest[MD5_HASH_WORDS * 4];
214 unsigned long long crc64;
215 unsigned long crc32;
216 unsigned short crc16;
217 unsigned char crc7;
218 };
219};
220
221struct group_run_stats {
222 unsigned long long max_run[2], min_run[2];
223 unsigned long long max_bw[2], min_bw[2];
224 unsigned long long io_kb[2];
225 unsigned long long agg[2];
226};
227
228/*
229 * What type of allocation to use for io buffers
230 */
231enum fio_memtype {
232 MEM_MALLOC = 0, /* ordinary malloc */
233 MEM_SHM, /* use shared memory segments */
234 MEM_SHMHUGE, /* use shared memory segments with huge pages */
235 MEM_MMAP, /* use anonynomous mmap */
236 MEM_MMAPHUGE, /* memory mapped huge file */
237};
238
239/*
240 * The type of object we are working on
241 */
242enum fio_filetype {
243 FIO_TYPE_FILE = 1, /* plain file */
244 FIO_TYPE_BD, /* block device */
245 FIO_TYPE_CHAR, /* character device */
246 FIO_TYPE_PIPE, /* pipe */
247};
248
249enum fio_ioengine_flags {
250 FIO_SYNCIO = 1 << 0, /* io engine has synchronous ->queue */
251 FIO_RAWIO = 1 << 1, /* some sort of direct/raw io */
252 FIO_DISKLESSIO = 1 << 2, /* no disk involved */
253 FIO_NOEXTEND = 1 << 3, /* engine can't extend file */
254 FIO_NODISKUTIL = 1 << 4, /* diskutil can't handle filename */
255 FIO_UNIDIR = 1 << 5, /* engine is uni-directional */
256};
257
258enum fio_file_flags {
259 FIO_FILE_OPEN = 1 << 0, /* file is open */
260 FIO_FILE_CLOSING = 1 << 1, /* file being closed */
261 FIO_FILE_EXISTS = 1 << 2, /* file there */
262 FIO_FILE_EXTEND = 1 << 3, /* needs extend */
263 FIO_FILE_NOSORT = 1 << 4, /* don't sort verify blocks */
264 FIO_FILE_DONE = 1 << 5, /* io completed to this file */
265 FIO_SIZE_KNOWN = 1 << 6, /* size has been set */
266};
267
268/*
269 * Each thread_data structure has a number of files associated with it,
270 * this structure holds state information for a single file.
271 */
272struct fio_file {
273 enum fio_filetype filetype;
274
275 /*
276 * A file may not be a file descriptor, let the io engine decide
277 */
278 union {
279 unsigned long file_data;
280 int fd;
281 };
282
283 /*
284 * filename and possible memory mapping
285 */
286 char *file_name;
287 void *mmap;
288 unsigned int major, minor;
289
290 /*
291 * size of the file, offset into file, and io size from that offset
292 */
293 unsigned long long real_file_size;
294 unsigned long long file_offset;
295 unsigned long long io_size;
296
297 unsigned long long last_pos;
298 unsigned long long last_completed_pos;
299
300 /*
301 * block map for random io
302 */
303 unsigned long *file_map;
304 unsigned int num_maps;
305 unsigned int last_free_lookup;
306
307 int references;
308 enum fio_file_flags flags;
309};
310
311/*
312 * How many depth levels to log
313 */
314#define FIO_IO_U_MAP_NR 8
315#define FIO_IO_U_LAT_U_NR 10
316#define FIO_IO_U_LAT_M_NR 12
317
318struct thread_stat {
319 char *name;
320 char *verror;
321 int error;
322 int groupid;
323 pid_t pid;
324 char *description;
325 int members;
326
327 struct io_log *slat_log;
328 struct io_log *clat_log;
329 struct io_log *bw_log;
330
331 /*
332 * bandwidth and latency stats
333 */
334 struct io_stat clat_stat[2]; /* completion latency */
335 struct io_stat slat_stat[2]; /* submission latency */
336 struct io_stat bw_stat[2]; /* bandwidth stats */
337
338 unsigned long long stat_io_bytes[2];
339 struct timeval stat_sample_time[2];
340
341 /*
342 * fio system usage accounting
343 */
344 struct rusage ru_start;
345 struct rusage ru_end;
346 unsigned long usr_time;
347 unsigned long sys_time;
348 unsigned long ctx;
349
350 /*
351 * IO depth and latency stats
352 */
353 unsigned int io_u_map[FIO_IO_U_MAP_NR];
354 unsigned int io_u_lat_u[FIO_IO_U_LAT_U_NR];
355 unsigned int io_u_lat_m[FIO_IO_U_LAT_M_NR];
356 unsigned long total_io_u[2];
357 unsigned long short_io_u[2];
358
359 unsigned long long io_bytes[2];
360 unsigned long runtime[2];
361 unsigned long total_run_time;
362};
363
364struct thread_options {
365 int pad;
366 char *description;
367 char *name;
368 char *directory;
369 char *filename;
370 char *opendir;
371 char *ioengine;
372 enum td_ddir td_ddir;
373 unsigned int ddir_nr;
374 unsigned int iodepth;
375 unsigned int iodepth_low;
376 unsigned int iodepth_batch;
377
378 unsigned long long size;
379 unsigned long long file_size_low;
380 unsigned long long file_size_high;
381 unsigned long long start_offset;
382
383 unsigned int bs[2];
384 unsigned int min_bs[2];
385 unsigned int max_bs[2];
386
387 unsigned int nr_files;
388 unsigned int open_files;
389
390 unsigned int odirect;
391 unsigned int invalidate_cache;
392 unsigned int create_serialize;
393 unsigned int create_fsync;
394 unsigned int end_fsync;
395 unsigned int sync_io;
396 unsigned int verify;
397 unsigned int verifysort;
398 unsigned int verify_interval;
399 unsigned int verify_offset;
400 unsigned int verify_pattern;
401 unsigned int verify_pattern_bytes;
402 unsigned int use_thread;
403 unsigned int unlink;
404 unsigned int do_disk_util;
405 unsigned int override_sync;
406 unsigned int rand_repeatable;
407 unsigned int write_lat_log;
408 unsigned int write_bw_log;
409 unsigned int norandommap;
410 unsigned int bs_unaligned;
411 unsigned int fsync_on_close;
412
413 unsigned int hugepage_size;
414 unsigned int rw_min_bs;
415 unsigned int thinktime;
416 unsigned int thinktime_spin;
417 unsigned int thinktime_blocks;
418 unsigned int fsync_blocks;
419 unsigned int start_delay;
420 unsigned long long timeout;
421 unsigned int overwrite;
422 unsigned int bw_avg_time;
423 unsigned int loops;
424 unsigned long long zone_size;
425 unsigned long long zone_skip;
426 enum fio_memtype mem_type;
427
428 unsigned int stonewall;
429 unsigned int new_group;
430 unsigned int numjobs;
431 os_cpu_mask_t cpumask;
432 unsigned int cpumask_set;
433 unsigned int iolog;
434 unsigned int rwmixcycle;
435 unsigned int rwmix[2];
436 unsigned int nice;
437 unsigned int file_service_type;
438 unsigned int group_reporting;
439 unsigned int fadvise_hint;
440 unsigned int zero_buffers;
441 unsigned int time_based;
442
443 char *read_iolog_file;
444 char *write_iolog_file;
445
446 /*
447 * Pre-run and post-run shell
448 */
449 char *exec_prerun;
450 char *exec_postrun;
451
452 unsigned int rate;
453 unsigned int ratemin;
454 unsigned int ratecycle;
455 unsigned int rate_iops;
456 unsigned int rate_iops_min;
457
458 char *ioscheduler;
459
460 /*
461 * CPU "io" cycle burner
462 */
463 unsigned int cpuload;
464 unsigned int cpucycle;
465};
466
467#define FIO_VERROR_SIZE 128
468
469/*
470 * This describes a single thread/process executing a fio job.
471 */
472struct thread_data {
473 struct thread_options o;
474 char verror[FIO_VERROR_SIZE];
475 pthread_t thread;
476 int thread_number;
477 int groupid;
478 struct thread_stat ts;
479 struct fio_file *files;
480 unsigned int files_index;
481 unsigned int nr_open_files;
482 unsigned int nr_done_files;
483 unsigned int nr_normal_files;
484 union {
485 unsigned int next_file;
486 os_random_state_t next_file_state;
487 };
488 int error;
489 int done;
490 pid_t pid;
491 char *orig_buffer;
492 size_t orig_buffer_size;
493 volatile int terminate;
494 volatile int runstate;
495 unsigned int ioprio;
496 unsigned int last_was_sync;
497
498 char *mmapfile;
499 int mmapfd;
500
501 void *iolog_buf;
502 FILE *iolog_f;
503
504 char *sysfs_root;
505
506 os_random_state_t bsrange_state;
507 os_random_state_t verify_state;
508
509 int shm_id;
510
511 /*
512 * IO engine hooks, contains everything needed to submit an io_u
513 * to any of the available IO engines.
514 */
515 struct ioengine_ops *io_ops;
516
517 /*
518 * Current IO depth and list of free and busy io_u's.
519 */
520 unsigned int cur_depth;
521 struct list_head io_u_freelist;
522 struct list_head io_u_busylist;
523 struct list_head io_u_requeues;
524 unsigned int io_u_queued;
525
526 /*
527 * Rate state
528 */
529 unsigned long rate_usec_cycle;
530 long rate_pending_usleep;
531 unsigned long rate_bytes;
532 unsigned long rate_blocks;
533 struct timeval lastrate;
534
535 unsigned long long total_io_size;
536
537 unsigned long io_issues[2];
538 unsigned long long io_blocks[2];
539 unsigned long long io_bytes[2];
540 unsigned long long io_skip_bytes;
541 unsigned long long this_io_bytes[2];
542 unsigned long long zone_bytes;
543 struct fio_sem *mutex;
544
545 /*
546 * State for random io, a bitmap of blocks done vs not done
547 */
548 os_random_state_t random_state;
549
550 struct timeval start; /* start of this loop */
551 struct timeval epoch; /* time job was started */
552 struct timeval rw_end[2];
553 struct timeval last_issue;
554 unsigned int rw_end_set[2];
555
556 /*
557 * read/write mixed workload state
558 */
559 os_random_state_t rwmix_state;
560 unsigned long long rwmix_bytes;
561 struct timeval rwmix_switch;
562 enum fio_ddir rwmix_ddir;
563 unsigned int ddir_nr;
564
565 /*
566 * IO history logs for verification. We use a tree for sorting,
567 * if we are overwriting. Otherwise just use a fifo.
568 */
569 struct rb_root io_hist_tree;
570 struct list_head io_hist_list;
571
572 /*
573 * For IO replaying
574 */
575 struct list_head io_log_list;
576
577 /*
578 * timeout handling
579 */
580 struct timeval timeout_end;
581 struct itimerval timer;
582
583 /*
584 * for fileservice, how often to switch to a new file
585 */
586 unsigned int file_service_nr;
587 unsigned int file_service_left;
588 struct fio_file *file_service_file;
589
590 /*
591 * For generating file sizes
592 */
593 os_random_state_t file_size_state;
594};
595
596/*
597 * roundrobin available files, or choose one at random.
598 */
599enum {
600 FIO_FSERVICE_RANDOM = 1,
601 FIO_FSERVICE_RR = 2,
602};
603
604/*
605 * 30 second per-io_u timeout, with 5 second intervals to avoid resetting
606 * the timer on each queue operation.
607 */
608#define IO_U_TIMEOUT_INC 5
609#define IO_U_TIMEOUT 30
610
611#define __td_verror(td, err, msg, func) \
612 do { \
613 if ((td)->error) \
614 break; \
615 int e = (err); \
616 (td)->error = e; \
617 snprintf(td->verror, sizeof(td->verror) - 1, "file:%s:%d, func=%s, error=%s", __FILE__, __LINE__, (func), (msg)); \
618 } while (0)
619
620
621#define td_verror(td, err, func) \
622 __td_verror((td), (err), strerror((err)), (func))
623#define td_vmsg(td, err, msg, func) \
624 __td_verror((td), (err), (msg), (func))
625
626extern int exitall_on_terminate;
627extern int thread_number;
628extern int nr_process, nr_thread;
629extern int shm_id;
630extern int groupid;
631extern int terse_output;
632extern FILE *f_out;
633extern FILE *f_err;
634extern int temp_stall_ts;
635extern unsigned long long mlock_size;
636extern unsigned long page_mask, page_size;
637
638extern struct thread_data *threads;
639
640#define td_read(td) ((td)->o.td_ddir & TD_DDIR_READ)
641#define td_write(td) ((td)->o.td_ddir & TD_DDIR_WRITE)
642#define td_rw(td) (((td)->o.td_ddir & TD_DDIR_RW) == TD_DDIR_RW)
643#define td_random(td) ((td)->o.td_ddir & TD_DDIR_RAND)
644
645#define BLOCKS_PER_MAP (8 * sizeof(long))
646#define TO_MAP_BLOCK(td, f, b) ((b) - ((f)->file_offset / (td)->o.rw_min_bs))
647#define RAND_MAP_IDX(td, f, b) (TO_MAP_BLOCK(td, f, b) / BLOCKS_PER_MAP)
648#define RAND_MAP_BIT(td, f, b) (TO_MAP_BLOCK(td, f, b) & (BLOCKS_PER_MAP - 1))
649
650#define MAX_JOBS (1024)
651
652static inline int should_fsync(struct thread_data *td)
653{
654 if (td->last_was_sync)
655 return 0;
656 if (td->o.odirect)
657 return 0;
658 if (td_write(td) || td_rw(td) || td->o.override_sync)
659 return 1;
660
661 return 0;
662}
663
664/*
665 * Disk utils as read in /sys/block/<dev>/stat
666 */
667struct disk_util_stat {
668 unsigned ios[2];
669 unsigned merges[2];
670 unsigned long long sectors[2];
671 unsigned ticks[2];
672 unsigned io_ticks;
673 unsigned time_in_queue;
674};
675
676/*
677 * Per-device disk util management
678 */
679struct disk_util {
680 struct list_head list;
681
682 char *name;
683 char *sysfs_root;
684 char path[256];
685 int major, minor;
686
687 struct disk_util_stat dus;
688 struct disk_util_stat last_dus;
689
690 unsigned long msec;
691 struct timeval time;
692};
693
694#define DISK_UTIL_MSEC (250)
695
696/*
697 * Log exports
698 */
699enum file_log_act {
700 FIO_LOG_ADD_FILE,
701 FIO_LOG_OPEN_FILE,
702 FIO_LOG_CLOSE_FILE,
703};
704
705extern int __must_check read_iolog_get(struct thread_data *, struct io_u *);
706extern void log_io_u(struct thread_data *, struct io_u *);
707extern void log_file(struct thread_data *, struct fio_file *, enum file_log_act);
708extern int __must_check init_iolog(struct thread_data *td);
709extern void log_io_piece(struct thread_data *, struct io_u *);
710extern void prune_io_piece_log(struct thread_data *);
711extern void write_iolog_close(struct thread_data *);
712
713/*
714 * Logging
715 */
716extern void add_clat_sample(struct thread_data *, enum fio_ddir, unsigned long);
717extern void add_slat_sample(struct thread_data *, enum fio_ddir, unsigned long);
718extern void add_bw_sample(struct thread_data *, enum fio_ddir, struct timeval *);
719extern void show_run_stats(void);
720extern void init_disk_util(struct thread_data *);
721extern void update_rusage_stat(struct thread_data *);
722extern void update_io_ticks(void);
723extern void disk_util_timer_arm(void);
724extern void setup_log(struct io_log **);
725extern void finish_log(struct thread_data *, struct io_log *, const char *);
726extern void __finish_log(struct io_log *, const char *);
727extern struct io_log *agg_io_log[2];
728extern int write_bw_log;
729extern void add_agg_sample(unsigned long, enum fio_ddir);
730
731/*
732 * Time functions
733 */
734extern unsigned long utime_since(struct timeval *, struct timeval *);
735extern unsigned long utime_since_now(struct timeval *);
736extern unsigned long mtime_since(struct timeval *, struct timeval *);
737extern unsigned long mtime_since_now(struct timeval *);
738extern unsigned long time_since_now(struct timeval *);
739extern unsigned long mtime_since_genesis(void);
740extern void __usec_sleep(unsigned int);
741extern void usec_sleep(struct thread_data *, unsigned long);
742extern void rate_throttle(struct thread_data *, unsigned long, unsigned int);
743extern void fill_start_time(struct timeval *);
744extern void fio_gettime(struct timeval *, void *);
745extern void set_genesis_time(void);
746
747/*
748 * Init/option functions
749 */
750extern int __must_check parse_options(int, char **);
751extern int fio_option_parse(struct thread_data *, const char *);
752extern int fio_cmd_option_parse(struct thread_data *, const char *, char *);
753extern void fio_fill_default_options(struct thread_data *);
754extern int fio_show_option_help(const char *);
755extern void fio_options_dup_and_init(struct option *);
756extern void options_mem_dupe(struct thread_data *);
757extern void options_mem_free(struct thread_data *);
758#define FIO_GETOPT_JOB 0x89988998
759#define FIO_NR_OPTIONS 128
760
761/*
762 * File setup/shutdown
763 */
764extern void close_files(struct thread_data *);
765extern int __must_check setup_files(struct thread_data *);
766extern int __must_check open_files(struct thread_data *);
767extern int __must_check file_invalidate_cache(struct thread_data *, struct fio_file *);
768extern int __must_check generic_open_file(struct thread_data *, struct fio_file *);
769extern void generic_close_file(struct thread_data *, struct fio_file *);
770extern int add_file(struct thread_data *, const char *);
771extern void get_file(struct fio_file *);
772extern void put_file(struct thread_data *, struct fio_file *);
773extern int add_dir_files(struct thread_data *, const char *);
774extern int init_random_map(struct thread_data *);
775extern void dup_files(struct thread_data *, struct thread_data *);
776extern int get_fileno(struct thread_data *, const char *);
777extern void free_release_files(struct thread_data *);
778
779/*
780 * ETA/status stuff
781 */
782extern void print_thread_status(void);
783extern void print_status_init(int);
784
785/*
786 * disk util stuff
787 */
788#ifdef FIO_HAVE_DISK_UTIL
789extern void show_disk_util(void);
790extern void disk_util_timer_arm(void);
791extern void init_disk_util(struct thread_data *);
792extern void update_io_ticks(void);
793#else
794#define show_disk_util()
795#define disk_util_timer_arm()
796#define init_disk_util(td)
797#define update_io_ticks()
798#endif
799
800/*
801 * Thread life cycle. Once a thread has a runstate beyond TD_INITIALIZED, it
802 * will never back again. It may cycle between running/verififying/fsyncing.
803 * Once the thread reaches TD_EXITED, it is just waiting for the core to
804 * reap it.
805 */
806enum {
807 TD_NOT_CREATED = 0,
808 TD_CREATED,
809 TD_INITIALIZED,
810 TD_RUNNING,
811 TD_VERIFYING,
812 TD_FSYNCING,
813 TD_EXITED,
814 TD_REAPED,
815};
816
817/*
818 * Verify helpers
819 */
820extern void populate_verify_io_u(struct thread_data *, struct io_u *);
821extern int __must_check get_next_verify(struct thread_data *td, struct io_u *);
822extern int __must_check verify_io_u(struct thread_data *, struct io_u *);
823
824/*
825 * Memory helpers
826 */
827extern int __must_check fio_pin_memory(void);
828extern void fio_unpin_memory(void);
829extern int __must_check allocate_io_mem(struct thread_data *);
830extern void free_io_mem(struct thread_data *);
831
832/*
833 * io unit handling
834 */
835#define queue_full(td) list_empty(&(td)->io_u_freelist)
836extern struct io_u *__get_io_u(struct thread_data *);
837extern struct io_u *get_io_u(struct thread_data *);
838extern void put_io_u(struct thread_data *, struct io_u *);
839extern void requeue_io_u(struct thread_data *, struct io_u **);
840extern long __must_check io_u_sync_complete(struct thread_data *, struct io_u *);
841extern long __must_check io_u_queued_complete(struct thread_data *, int);
842extern void io_u_queued(struct thread_data *, struct io_u *);
843extern void io_u_log_error(struct thread_data *, struct io_u *);
844extern void io_u_init_timeout(void);
845extern void io_u_set_timeout(struct thread_data *);
846extern void io_u_mark_depth(struct thread_data *, struct io_u *);
847
848/*
849 * io engine entry points
850 */
851extern int __must_check td_io_init(struct thread_data *);
852extern int __must_check td_io_prep(struct thread_data *, struct io_u *);
853extern int __must_check td_io_queue(struct thread_data *, struct io_u *);
854extern int __must_check td_io_sync(struct thread_data *, struct fio_file *);
855extern int __must_check td_io_getevents(struct thread_data *, int, int, struct timespec *);
856extern int __must_check td_io_commit(struct thread_data *);
857extern int __must_check td_io_open_file(struct thread_data *, struct fio_file *);
858extern void td_io_close_file(struct thread_data *, struct fio_file *);
859
860/*
861 * blktrace support
862 */
863#ifdef FIO_HAVE_BLKTRACE
864extern int is_blktrace(const char *);
865extern int load_blktrace(struct thread_data *, const char *);
866#endif
867
868/*
869 * If logging output to a file, stderr should go to both stderr and f_err
870 */
871#define log_err(args...) do { \
872 fprintf(f_err, ##args); \
873 if (f_err != stderr) \
874 fprintf(stderr, ##args); \
875 } while (0)
876
877#define log_info(args...) fprintf(f_out, ##args)
878
879FILE *get_f_out(void);
880FILE *get_f_err(void);
881
882struct ioengine_ops {
883 struct list_head list;
884 char name[16];
885 int version;
886 int flags;
887 int (*setup)(struct thread_data *);
888 int (*init)(struct thread_data *);
889 int (*prep)(struct thread_data *, struct io_u *);
890 int (*queue)(struct thread_data *, struct io_u *);
891 int (*commit)(struct thread_data *);
892 int (*getevents)(struct thread_data *, int, int, struct timespec *);
893 struct io_u *(*event)(struct thread_data *, int);
894 int (*cancel)(struct thread_data *, struct io_u *);
895 void (*cleanup)(struct thread_data *);
896 int (*open_file)(struct thread_data *, struct fio_file *);
897 void (*close_file)(struct thread_data *, struct fio_file *);
898 void *data;
899 void *dlhandle;
900};
901
902#define FIO_IOOPS_VERSION 7
903
904extern struct ioengine_ops *load_ioengine(struct thread_data *, const char *);
905extern void register_ioengine(struct ioengine_ops *);
906extern void unregister_ioengine(struct ioengine_ops *);
907extern void close_ioengine(struct thread_data *);
908
909/*
910 * Mark unused variables passed to ops functions as unused, to silence gcc
911 */
912#define fio_unused __attribute((__unused__))
913#define fio_init __attribute__((constructor))
914#define fio_exit __attribute__((destructor))
915
916#define for_each_td(td, i) \
917 for ((i) = 0, (td) = &threads[0]; (i) < (int) thread_number; (i)++, (td)++)
918#define for_each_file(td, f, i) \
919 for ((i) = 0, (f) = &(td)->files[0]; (i) < (td)->o.nr_files; (i)++, (f)++)
920
921#define fio_assert(td, cond) do { \
922 if (!(cond)) { \
923 int *__foo = NULL; \
924 fprintf(stderr, "file:%s:%d, assert %s failed\n", __FILE__, __LINE__, #cond); \
925 (td)->runstate = TD_EXITED; \
926 (td)->error = EFAULT; \
927 *__foo = 0; \
928 } \
929} while (0)
930
931static inline void clear_error(struct thread_data *td)
932{
933 td->error = 0;
934 td->verror[0] = '\0';
935}
936
937#endif
fio - Flexible IO Tester