Commit | Line | Data |
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ebac4655 JA |
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> | |
3c39a379 JA |
9 | #include <errno.h> |
10 | #include <stdlib.h> | |
11 | #include <stdio.h> | |
6d6f031f | 12 | #include <unistd.h> |
34cfcdaf | 13 | #include <string.h> |
ebac4655 JA |
14 | |
15 | #include "list.h" | |
16 | #include "md5.h" | |
17 | #include "crc32.h" | |
18 | #include "arch.h" | |
19 | #include "os.h" | |
20 | ||
1e97cce9 JA |
21 | enum fio_ddir { |
22 | DDIR_READ = 0, | |
23 | DDIR_WRITE, | |
24 | DDIR_SYNC, | |
25 | }; | |
26 | ||
ebac4655 | 27 | struct io_stat { |
ebac4655 JA |
28 | unsigned long max_val; |
29 | unsigned long min_val; | |
30 | unsigned long samples; | |
68704084 JA |
31 | |
32 | double mean; | |
33 | double S; | |
ebac4655 JA |
34 | }; |
35 | ||
36 | struct io_sample { | |
37 | unsigned long time; | |
38 | unsigned long val; | |
1e97cce9 | 39 | enum fio_ddir ddir; |
ebac4655 JA |
40 | }; |
41 | ||
42 | struct io_log { | |
43 | unsigned long nr_samples; | |
44 | unsigned long max_samples; | |
45 | struct io_sample *log; | |
46 | }; | |
47 | ||
48 | struct io_piece { | |
49 | struct list_head list; | |
53cdc686 | 50 | struct fio_file *file; |
ebac4655 JA |
51 | unsigned long long offset; |
52 | unsigned int len; | |
1e97cce9 | 53 | enum fio_ddir ddir; |
ebac4655 JA |
54 | }; |
55 | ||
56 | /* | |
57 | * The io unit | |
58 | */ | |
59 | struct io_u { | |
60 | union { | |
61 | #ifdef FIO_HAVE_LIBAIO | |
62 | struct iocb iocb; | |
63 | #endif | |
64 | #ifdef FIO_HAVE_POSIXAIO | |
65 | struct aiocb aiocb; | |
66 | #endif | |
67 | #ifdef FIO_HAVE_SGIO | |
68 | struct sg_io_hdr hdr; | |
69 | #endif | |
70 | }; | |
71 | struct timeval start_time; | |
72 | struct timeval issue_time; | |
73 | ||
6b9cea23 | 74 | void *buf; |
ebac4655 JA |
75 | unsigned int buflen; |
76 | unsigned long long offset; | |
77 | ||
cec6b55d JA |
78 | void *xfer_buf; |
79 | unsigned int xfer_buflen; | |
80 | ||
ebac4655 JA |
81 | unsigned int resid; |
82 | unsigned int error; | |
83 | ||
1e97cce9 | 84 | enum fio_ddir ddir; |
ebac4655 | 85 | |
dfd7bc2c JA |
86 | /* |
87 | * io engine private data | |
88 | */ | |
89 | union { | |
90 | unsigned int index; | |
91 | unsigned int seen; | |
92 | }; | |
93 | ||
53cdc686 JA |
94 | struct fio_file *file; |
95 | ||
ebac4655 JA |
96 | struct list_head list; |
97 | }; | |
98 | ||
99 | #define FIO_HDR_MAGIC 0xf00baaef | |
100 | ||
101 | enum { | |
102 | VERIFY_NONE = 0, | |
103 | VERIFY_MD5, | |
104 | VERIFY_CRC32, | |
105 | }; | |
106 | ||
107 | struct verify_header { | |
108 | unsigned int fio_magic; | |
109 | unsigned int len; | |
110 | unsigned int verify_type; | |
111 | union { | |
112 | char md5_digest[MD5_HASH_WORDS * 4]; | |
113 | unsigned long crc32; | |
114 | }; | |
115 | }; | |
116 | ||
117 | struct group_run_stats { | |
9104f874 JA |
118 | unsigned long long max_run[2], min_run[2]; |
119 | unsigned long long max_bw[2], min_bw[2]; | |
e9b2a3fa | 120 | unsigned long long io_kb[2]; |
9104f874 | 121 | unsigned long long agg[2]; |
ebac4655 JA |
122 | }; |
123 | ||
e9c047a0 JA |
124 | /* |
125 | * What type of allocation to use for io buffers | |
126 | */ | |
127 | enum fio_memtype { | |
128 | MEM_MALLOC = 0, /* ordinary malloc */ | |
129 | MEM_SHM, /* use shared memory segments */ | |
74b025b0 | 130 | MEM_SHMHUGE, /* use shared memory segments with huge pages */ |
e9c047a0 | 131 | MEM_MMAP, /* use anonynomous mmap */ |
d0bdaf49 | 132 | MEM_MMAPHUGE, /* memory mapped huge file */ |
e9c047a0 JA |
133 | }; |
134 | ||
135 | /* | |
136 | * The type of object we are working on | |
137 | */ | |
138 | enum fio_filetype { | |
139 | FIO_TYPE_FILE = 1, | |
140 | FIO_TYPE_BD, | |
141 | FIO_TYPE_CHAR, | |
142 | }; | |
143 | ||
2866c82d | 144 | enum fio_ioengine_flags { |
e9c047a0 | 145 | FIO_SYNCIO = 1 << 0, |
2866c82d JA |
146 | FIO_CPUIO = 1 << 1, |
147 | FIO_MMAPIO = 1 << 2, | |
b2a15192 | 148 | FIO_RAWIO = 1 << 3, |
ed92ac0c | 149 | FIO_NETIO = 1 << 4, |
4d9345ae | 150 | FIO_NULLIO = 1 << 5, |
e9c047a0 JA |
151 | }; |
152 | ||
53cdc686 JA |
153 | struct fio_file { |
154 | /* | |
155 | * A file may not be a file descriptor, let the io engine decide | |
156 | */ | |
157 | union { | |
158 | unsigned long file_data; | |
159 | int fd; | |
160 | }; | |
161 | char *file_name; | |
162 | void *mmap; | |
163 | unsigned long long file_size; | |
164 | unsigned long long real_file_size; | |
165 | unsigned long long file_offset; | |
166 | unsigned long long last_pos; | |
02bcaa8c | 167 | unsigned long long last_completed_pos; |
53cdc686 JA |
168 | |
169 | unsigned long *file_map; | |
170 | unsigned int num_maps; | |
9b031dc8 JA |
171 | |
172 | unsigned int unlink; | |
c685b5b2 JA |
173 | |
174 | unsigned int last_free_lookup; | |
53cdc686 JA |
175 | }; |
176 | ||
71619dc2 JA |
177 | /* |
178 | * How many depth levels to log | |
179 | */ | |
180 | #define FIO_IO_U_MAP_NR 8 | |
181 | ||
e9c047a0 JA |
182 | /* |
183 | * This describes a single thread/process executing a fio job. | |
184 | */ | |
ebac4655 | 185 | struct thread_data { |
61697c37 | 186 | char *description; |
b4692828 | 187 | char *name; |
ef899b63 | 188 | char *directory; |
13f8e2d2 | 189 | char *filename; |
ebac4655 JA |
190 | char verror[80]; |
191 | pthread_t thread; | |
192 | int thread_number; | |
193 | int groupid; | |
e9c047a0 | 194 | enum fio_filetype filetype; |
53cdc686 JA |
195 | struct fio_file *files; |
196 | unsigned int nr_files; | |
13f8e2d2 | 197 | unsigned int nr_uniq_files; |
53cdc686 | 198 | unsigned int next_file; |
ebac4655 | 199 | int error; |
ebac4655 JA |
200 | pid_t pid; |
201 | char *orig_buffer; | |
202 | size_t orig_buffer_size; | |
203 | volatile int terminate; | |
204 | volatile int runstate; | |
e9c047a0 | 205 | enum fio_ddir ddir; |
3d60d1ed | 206 | unsigned int iomix; |
ebac4655 | 207 | unsigned int ioprio; |
87dc1ab1 | 208 | unsigned int last_was_sync; |
e9c047a0 | 209 | |
9158d2f7 JA |
210 | unsigned int sequential; |
211 | unsigned int odirect; | |
212 | unsigned int invalidate_cache; | |
213 | unsigned int create_serialize; | |
214 | unsigned int create_fsync; | |
215 | unsigned int end_fsync; | |
216 | unsigned int sync_io; | |
217 | unsigned int verify; | |
218 | unsigned int use_thread; | |
219 | unsigned int unlink; | |
220 | unsigned int do_disk_util; | |
221 | unsigned int override_sync; | |
222 | unsigned int rand_repeatable; | |
223 | unsigned int write_lat_log; | |
224 | unsigned int write_bw_log; | |
bb8895e0 | 225 | unsigned int norandommap; |
690adba3 | 226 | unsigned int bs_unaligned; |
e9c047a0 | 227 | |
a00735e6 JA |
228 | unsigned int bs[2]; |
229 | unsigned int min_bs[2]; | |
230 | unsigned int max_bs[2]; | |
56bb17f2 | 231 | unsigned int hugepage_size; |
a00735e6 | 232 | unsigned int rw_min_bs; |
ebac4655 | 233 | unsigned int thinktime; |
9c1f7434 | 234 | unsigned int thinktime_blocks; |
ebac4655 JA |
235 | unsigned int fsync_blocks; |
236 | unsigned int start_delay; | |
906c8d75 | 237 | unsigned long timeout; |
ebac4655 | 238 | unsigned int overwrite; |
ebac4655 | 239 | unsigned int bw_avg_time; |
ebac4655 | 240 | unsigned int loops; |
20dc95c4 JA |
241 | unsigned long long zone_size; |
242 | unsigned long long zone_skip; | |
e9c047a0 | 243 | enum fio_memtype mem_type; |
313cb206 JA |
244 | char *mmapfile; |
245 | int mmapfd; | |
ebac4655 JA |
246 | unsigned int stonewall; |
247 | unsigned int numjobs; | |
ebac4655 JA |
248 | unsigned int iodepth; |
249 | os_cpu_mask_t cpumask; | |
aea47d44 | 250 | unsigned int iolog; |
843a7413 | 251 | unsigned int read_iolog; |
a6ccc7be JA |
252 | unsigned int rwmixcycle; |
253 | unsigned int rwmixread; | |
e1f36503 | 254 | unsigned int rwmixwrite; |
b6f4d880 | 255 | unsigned int nice; |
aea47d44 | 256 | |
076efc7c JA |
257 | char *read_iolog_file; |
258 | char *write_iolog_file; | |
843a7413 JA |
259 | void *iolog_buf; |
260 | FILE *iolog_f; | |
ebac4655 | 261 | |
da86774e | 262 | char *sysfs_root; |
da86774e JA |
263 | char *ioscheduler; |
264 | ||
6dfd46b9 JA |
265 | os_random_state_t bsrange_state; |
266 | os_random_state_t verify_state; | |
ebac4655 JA |
267 | |
268 | int shm_id; | |
269 | ||
e9c047a0 JA |
270 | /* |
271 | * IO engine hooks, contains everything needed to submit an io_u | |
272 | * to any of the available IO engines. | |
273 | */ | |
2866c82d | 274 | struct ioengine_ops *io_ops; |
ebac4655 | 275 | |
e9c047a0 JA |
276 | /* |
277 | * Current IO depth and list of free and busy io_u's. | |
278 | */ | |
ebac4655 | 279 | unsigned int cur_depth; |
71619dc2 JA |
280 | unsigned int io_u_map[FIO_IO_U_MAP_NR]; |
281 | unsigned long total_io_u; | |
ebac4655 JA |
282 | struct list_head io_u_freelist; |
283 | struct list_head io_u_busylist; | |
284 | ||
e9c047a0 JA |
285 | /* |
286 | * Rate state | |
287 | */ | |
ebac4655 JA |
288 | unsigned int rate; |
289 | unsigned int ratemin; | |
290 | unsigned int ratecycle; | |
291 | unsigned long rate_usec_cycle; | |
292 | long rate_pending_usleep; | |
293 | unsigned long rate_bytes; | |
294 | struct timeval lastrate; | |
295 | ||
296 | unsigned long runtime[2]; /* msec */ | |
297 | unsigned long long io_size; | |
53cdc686 JA |
298 | unsigned long long total_file_size; |
299 | unsigned long long start_offset; | |
ebac4655 JA |
300 | unsigned long long total_io_size; |
301 | ||
9104f874 JA |
302 | unsigned long long io_blocks[2]; |
303 | unsigned long long io_bytes[2]; | |
304 | unsigned long long zone_bytes; | |
305 | unsigned long long this_io_bytes[2]; | |
bbfd6b00 | 306 | volatile int mutex; |
ebac4655 | 307 | |
e9c047a0 JA |
308 | /* |
309 | * State for random io, a bitmap of blocks done vs not done | |
310 | */ | |
6dfd46b9 | 311 | os_random_state_t random_state; |
ebac4655 | 312 | |
b990b5c0 JA |
313 | /* |
314 | * CPU "io" cycle burner | |
315 | */ | |
316 | unsigned int cpuload; | |
317 | unsigned int cpucycle; | |
318 | ||
ebac4655 JA |
319 | /* |
320 | * bandwidth and latency stats | |
321 | */ | |
322 | struct io_stat clat_stat[2]; /* completion latency */ | |
323 | struct io_stat slat_stat[2]; /* submission latency */ | |
324 | struct io_stat bw_stat[2]; /* bandwidth stats */ | |
325 | ||
9104f874 | 326 | unsigned long long stat_io_bytes[2]; |
ebac4655 JA |
327 | struct timeval stat_sample_time[2]; |
328 | ||
329 | struct io_log *slat_log; | |
330 | struct io_log *clat_log; | |
331 | struct io_log *bw_log; | |
332 | ||
333 | struct timeval start; /* start of this loop */ | |
334 | struct timeval epoch; /* time job was started */ | |
69008999 | 335 | struct timeval end_time;/* time job ended */ |
ebac4655 | 336 | |
e9c047a0 JA |
337 | /* |
338 | * fio system usage accounting | |
339 | */ | |
ebac4655 JA |
340 | struct rusage ru_start; |
341 | struct rusage ru_end; | |
342 | unsigned long usr_time; | |
343 | unsigned long sys_time; | |
344 | unsigned long ctx; | |
345 | ||
e9c047a0 JA |
346 | /* |
347 | * read/write mixed workload state | |
348 | */ | |
6dfd46b9 | 349 | os_random_state_t rwmix_state; |
a6ccc7be | 350 | struct timeval rwmix_switch; |
e9c047a0 | 351 | enum fio_ddir rwmix_ddir; |
a6ccc7be | 352 | |
4e0ba8af JA |
353 | /* |
354 | * Pre-run and post-run shell | |
355 | */ | |
356 | char *exec_prerun; | |
357 | char *exec_postrun; | |
358 | ||
e9c047a0 JA |
359 | /* |
360 | * IO historic logs | |
361 | */ | |
ebac4655 | 362 | struct list_head io_hist_list; |
aea47d44 | 363 | struct list_head io_log_list; |
ebac4655 JA |
364 | }; |
365 | ||
b990b5c0 | 366 | #define __td_verror(td, err, msg) \ |
ebac4655 JA |
367 | do { \ |
368 | int e = (err); \ | |
369 | (td)->error = e; \ | |
b990b5c0 | 370 | snprintf(td->verror, sizeof(td->verror) - 1, "file:%s:%d, error=%s", __FILE__, __LINE__, (msg)); \ |
ebac4655 JA |
371 | } while (0) |
372 | ||
b990b5c0 JA |
373 | |
374 | #define td_verror(td, err) __td_verror((td), (err), strerror((err))) | |
375 | #define td_vmsg(td, err, msg) __td_verror((td), (err), (msg)) | |
376 | ||
ebac4655 JA |
377 | extern int exitall_on_terminate; |
378 | extern int thread_number; | |
379 | extern int shm_id; | |
380 | extern int groupid; | |
c6ae0a5b | 381 | extern int terse_output; |
eb8bbf48 JA |
382 | extern FILE *f_out; |
383 | extern FILE *f_err; | |
53cdc686 | 384 | extern int temp_stall_ts; |
1e97cce9 | 385 | extern unsigned long long mlock_size; |
ebac4655 JA |
386 | |
387 | extern struct thread_data *threads; | |
388 | ||
ebac4655 JA |
389 | #define td_read(td) ((td)->ddir == DDIR_READ) |
390 | #define td_write(td) ((td)->ddir == DDIR_WRITE) | |
3d60d1ed | 391 | #define td_rw(td) ((td)->iomix != 0) |
ebac4655 JA |
392 | |
393 | #define BLOCKS_PER_MAP (8 * sizeof(long)) | |
a00735e6 | 394 | #define TO_MAP_BLOCK(td, f, b) ((b) - ((f)->file_offset / (td)->rw_min_bs)) |
53cdc686 JA |
395 | #define RAND_MAP_IDX(td, f, b) (TO_MAP_BLOCK(td, f, b) / BLOCKS_PER_MAP) |
396 | #define RAND_MAP_BIT(td, f, b) (TO_MAP_BLOCK(td, f, b) & (BLOCKS_PER_MAP - 1)) | |
ebac4655 JA |
397 | |
398 | #define MAX_JOBS (1024) | |
399 | ||
87dc1ab1 JA |
400 | static inline int should_fsync(struct thread_data *td) |
401 | { | |
402 | if (td->last_was_sync) | |
403 | return 0; | |
404 | if (td->odirect) | |
405 | return 0; | |
406 | if (td_write(td) || td_rw(td) || td->override_sync) | |
407 | return 1; | |
408 | ||
409 | return 0; | |
410 | } | |
411 | ||
ebac4655 JA |
412 | struct disk_util_stat { |
413 | unsigned ios[2]; | |
414 | unsigned merges[2]; | |
415 | unsigned long long sectors[2]; | |
416 | unsigned ticks[2]; | |
417 | unsigned io_ticks; | |
418 | unsigned time_in_queue; | |
419 | }; | |
420 | ||
421 | struct disk_util { | |
422 | struct list_head list; | |
423 | ||
424 | char *name; | |
425 | char path[256]; | |
426 | dev_t dev; | |
427 | ||
428 | struct disk_util_stat dus; | |
429 | struct disk_util_stat last_dus; | |
430 | ||
431 | unsigned long msec; | |
432 | struct timeval time; | |
433 | }; | |
434 | ||
435 | struct io_completion_data { | |
436 | int nr; /* input */ | |
437 | ||
438 | int error; /* output */ | |
439 | unsigned long bytes_done[2]; /* output */ | |
02bcaa8c | 440 | struct timeval time; /* output */ |
ebac4655 JA |
441 | }; |
442 | ||
443 | #define DISK_UTIL_MSEC (250) | |
444 | ||
6a0106a0 JA |
445 | #ifndef min |
446 | #define min(a, b) ((a) < (b) ? (a) : (b)) | |
447 | #endif | |
a00735e6 JA |
448 | #ifndef max |
449 | #define max(a, b) ((a) > (b) ? (a) : (b)) | |
450 | #endif | |
6a0106a0 | 451 | |
6796209a JA |
452 | /* |
453 | * Log exports | |
454 | */ | |
455 | extern int read_iolog_get(struct thread_data *, struct io_u *); | |
456 | extern void write_iolog_put(struct thread_data *, struct io_u *); | |
457 | extern int init_iolog(struct thread_data *td); | |
458 | extern void log_io_piece(struct thread_data *, struct io_u *); | |
459 | extern void prune_io_piece_log(struct thread_data *); | |
460 | extern void write_iolog_close(struct thread_data *); | |
461 | ||
462 | /* | |
463 | * Logging | |
464 | */ | |
1e97cce9 JA |
465 | extern void add_clat_sample(struct thread_data *, enum fio_ddir, unsigned long); |
466 | extern void add_slat_sample(struct thread_data *, enum fio_ddir, unsigned long); | |
467 | extern void add_bw_sample(struct thread_data *, enum fio_ddir, struct timeval *); | |
6796209a JA |
468 | extern void show_run_stats(void); |
469 | extern void init_disk_util(struct thread_data *); | |
470 | extern void update_rusage_stat(struct thread_data *); | |
471 | extern void update_io_ticks(void); | |
472 | extern void disk_util_timer_arm(void); | |
8914a9d8 JA |
473 | extern void setup_log(struct io_log **); |
474 | extern void finish_log(struct thread_data *, struct io_log *, const char *); | |
bb3884d8 | 475 | extern void __finish_log(struct io_log *, const char *); |
8914a9d8 | 476 | extern int setup_rate(struct thread_data *); |
bb3884d8 JA |
477 | extern struct io_log *agg_io_log[2]; |
478 | extern int write_bw_log; | |
479 | extern void add_agg_sample(unsigned long, enum fio_ddir); | |
6796209a JA |
480 | |
481 | /* | |
482 | * Time functions | |
483 | */ | |
484 | extern unsigned long utime_since(struct timeval *, struct timeval *); | |
69008999 | 485 | extern unsigned long utime_since_now(struct timeval *); |
6796209a JA |
486 | extern unsigned long mtime_since(struct timeval *, struct timeval *); |
487 | extern unsigned long mtime_since_now(struct timeval *); | |
488 | extern unsigned long time_since_now(struct timeval *); | |
263e529f | 489 | extern unsigned long mtime_since_genesis(void); |
b990b5c0 | 490 | extern void __usec_sleep(unsigned int); |
6796209a | 491 | extern void usec_sleep(struct thread_data *, unsigned long); |
a00735e6 | 492 | extern void rate_throttle(struct thread_data *, unsigned long, unsigned int, int); |
6043c579 | 493 | extern void fill_start_time(struct timeval *); |
02bcaa8c | 494 | extern void fio_gettime(struct timeval *, void *); |
6796209a | 495 | |
8914a9d8 JA |
496 | /* |
497 | * Init functions | |
498 | */ | |
499 | extern int parse_options(int, char **); | |
500 | extern int init_random_state(struct thread_data *); | |
501 | ||
53cdc686 JA |
502 | /* |
503 | * File setup/shutdown | |
504 | */ | |
505 | extern void close_files(struct thread_data *); | |
506 | extern int setup_files(struct thread_data *); | |
21972cde | 507 | extern int open_files(struct thread_data *); |
e5b401d4 | 508 | extern int file_invalidate_cache(struct thread_data *, struct fio_file *); |
53cdc686 | 509 | |
263e529f JA |
510 | /* |
511 | * ETA/status stuff | |
512 | */ | |
513 | extern void print_thread_status(void); | |
514 | extern void print_status_init(int); | |
515 | ||
516 | /* | |
517 | * Thread life cycle. Once a thread has a runstate beyond TD_INITIALIZED, it | |
518 | * will never back again. It may cycle between running/verififying/fsyncing. | |
519 | * Once the thread reaches TD_EXITED, it is just waiting for the core to | |
520 | * reap it. | |
521 | */ | |
522 | enum { | |
523 | TD_NOT_CREATED = 0, | |
524 | TD_CREATED, | |
525 | TD_INITIALIZED, | |
526 | TD_RUNNING, | |
527 | TD_VERIFYING, | |
528 | TD_FSYNCING, | |
529 | TD_EXITED, | |
530 | TD_REAPED, | |
531 | }; | |
532 | ||
e29d1b70 JA |
533 | /* |
534 | * Verify helpers | |
535 | */ | |
536 | extern void populate_verify_io_u(struct thread_data *, struct io_u *); | |
537 | extern int get_next_verify(struct thread_data *td, struct io_u *); | |
a9619d44 | 538 | extern int do_io_u_verify(struct thread_data *, struct io_u **); |
e29d1b70 | 539 | |
2f9ade3c JA |
540 | /* |
541 | * Memory helpers | |
542 | */ | |
543 | extern int fio_pin_memory(void); | |
544 | extern void fio_unpin_memory(void); | |
545 | extern int allocate_io_mem(struct thread_data *); | |
546 | extern void free_io_mem(struct thread_data *); | |
547 | ||
10ba535a JA |
548 | /* |
549 | * io unit handling | |
550 | */ | |
551 | #define queue_full(td) list_empty(&(td)->io_u_freelist) | |
552 | extern struct io_u *__get_io_u(struct thread_data *); | |
553 | extern struct io_u *get_io_u(struct thread_data *, struct fio_file *); | |
554 | extern void put_io_u(struct thread_data *, struct io_u *); | |
555 | extern void ios_completed(struct thread_data *, struct io_completion_data *); | |
556 | extern void io_completed(struct thread_data *, struct io_u *, struct io_completion_data *); | |
557 | ||
558 | /* | |
559 | * io engine entry points | |
560 | */ | |
8c16d840 | 561 | extern int td_io_init(struct thread_data *); |
10ba535a JA |
562 | extern int td_io_prep(struct thread_data *, struct io_u *); |
563 | extern int td_io_queue(struct thread_data *, struct io_u *); | |
564 | extern int td_io_sync(struct thread_data *, struct fio_file *); | |
565 | extern int td_io_getevents(struct thread_data *, int, int, struct timespec *); | |
566 | ||
bbfd6b00 JA |
567 | /* |
568 | * This is a pretty crappy semaphore implementation, but with the use that fio | |
569 | * has (just signalling start/go conditions), it doesn't have to be better. | |
570 | * Naturally this would not work for any type of contended semaphore or | |
571 | * for real locking. | |
572 | */ | |
1056eaad | 573 | static inline void fio_sem_init(volatile int *sem, int val) |
bbfd6b00 JA |
574 | { |
575 | *sem = val; | |
576 | } | |
577 | ||
1056eaad | 578 | static inline void fio_sem_down(volatile int *sem) |
bbfd6b00 JA |
579 | { |
580 | while (*sem == 0) | |
581 | usleep(10000); | |
582 | ||
583 | (*sem)--; | |
584 | } | |
585 | ||
1056eaad | 586 | static inline void fio_sem_up(volatile int *sem) |
bbfd6b00 JA |
587 | { |
588 | (*sem)++; | |
589 | } | |
590 | ||
3b70d7e5 JA |
591 | /* |
592 | * If logging output to a file, stderr should go to both stderr and f_err | |
593 | */ | |
594 | #define log_err(args...) do { \ | |
595 | fprintf(f_err, ##args); \ | |
596 | if (f_err != stderr) \ | |
597 | fprintf(stderr, ##args); \ | |
598 | } while (0) | |
599 | ||
2866c82d | 600 | struct ioengine_ops { |
5f350952 | 601 | struct list_head list; |
2866c82d JA |
602 | char name[16]; |
603 | int version; | |
604 | int flags; | |
ea2877a4 | 605 | int (*setup)(struct thread_data *); |
2866c82d JA |
606 | int (*init)(struct thread_data *); |
607 | int (*prep)(struct thread_data *, struct io_u *); | |
608 | int (*queue)(struct thread_data *, struct io_u *); | |
609 | int (*getevents)(struct thread_data *, int, int, struct timespec *); | |
610 | struct io_u *(*event)(struct thread_data *, int); | |
611 | int (*cancel)(struct thread_data *, struct io_u *); | |
612 | void (*cleanup)(struct thread_data *); | |
2866c82d JA |
613 | void *data; |
614 | void *dlhandle; | |
615 | }; | |
616 | ||
87dc1ab1 | 617 | #define FIO_IOOPS_VERSION 3 |
2866c82d | 618 | |
b4692828 | 619 | extern struct ioengine_ops *load_ioengine(struct thread_data *, const char *); |
5f350952 JA |
620 | extern int register_ioengine(struct ioengine_ops *); |
621 | extern void unregister_ioengine(struct ioengine_ops *); | |
2866c82d JA |
622 | extern void close_ioengine(struct thread_data *); |
623 | ||
624 | /* | |
625 | * Mark unused variables passed to ops functions as unused, to silence gcc | |
626 | */ | |
627 | #define fio_unused __attribute((__unused__)) | |
5f350952 JA |
628 | #define fio_init __attribute__((constructor)) |
629 | #define fio_exit __attribute__((destructor)) | |
2866c82d | 630 | |
34572e28 JA |
631 | #define for_each_td(td, i) \ |
632 | for ((i) = 0, (td) = &threads[0]; (i) < (int) thread_number; (i)++, (td)++) | |
53cdc686 | 633 | #define for_each_file(td, f, i) \ |
34572e28 | 634 | for ((i) = 0, (f) = &(td)->files[0]; (i) < (int) (td)->nr_files; (i)++, (f)++) |
53cdc686 | 635 | |
ebac4655 | 636 | #endif |