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