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