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; | |
53cdc686 JA |
173 | }; |
174 | ||
71619dc2 JA |
175 | /* |
176 | * How many depth levels to log | |
177 | */ | |
178 | #define FIO_IO_U_MAP_NR 8 | |
179 | ||
e9c047a0 JA |
180 | /* |
181 | * This describes a single thread/process executing a fio job. | |
182 | */ | |
ebac4655 | 183 | struct thread_data { |
61697c37 | 184 | char *description; |
b4692828 | 185 | char *name; |
ef899b63 | 186 | char *directory; |
13f8e2d2 | 187 | char *filename; |
ebac4655 JA |
188 | char verror[80]; |
189 | pthread_t thread; | |
190 | int thread_number; | |
191 | int groupid; | |
e9c047a0 | 192 | enum fio_filetype filetype; |
53cdc686 JA |
193 | struct fio_file *files; |
194 | unsigned int nr_files; | |
13f8e2d2 | 195 | unsigned int nr_uniq_files; |
53cdc686 | 196 | unsigned int next_file; |
ebac4655 | 197 | int error; |
ebac4655 JA |
198 | pid_t pid; |
199 | char *orig_buffer; | |
200 | size_t orig_buffer_size; | |
201 | volatile int terminate; | |
202 | volatile int runstate; | |
e9c047a0 | 203 | enum fio_ddir ddir; |
3d60d1ed | 204 | unsigned int iomix; |
ebac4655 | 205 | unsigned int ioprio; |
87dc1ab1 | 206 | unsigned int last_was_sync; |
e9c047a0 | 207 | |
9158d2f7 JA |
208 | unsigned int sequential; |
209 | unsigned int odirect; | |
210 | unsigned int invalidate_cache; | |
211 | unsigned int create_serialize; | |
212 | unsigned int create_fsync; | |
213 | unsigned int end_fsync; | |
214 | unsigned int sync_io; | |
215 | unsigned int verify; | |
216 | unsigned int use_thread; | |
217 | unsigned int unlink; | |
218 | unsigned int do_disk_util; | |
219 | unsigned int override_sync; | |
220 | unsigned int rand_repeatable; | |
221 | unsigned int write_lat_log; | |
222 | unsigned int write_bw_log; | |
bb8895e0 | 223 | unsigned int norandommap; |
690adba3 | 224 | unsigned int bs_unaligned; |
e9c047a0 | 225 | |
a00735e6 JA |
226 | unsigned int bs[2]; |
227 | unsigned int min_bs[2]; | |
228 | unsigned int max_bs[2]; | |
56bb17f2 | 229 | unsigned int hugepage_size; |
a00735e6 | 230 | unsigned int rw_min_bs; |
ebac4655 | 231 | unsigned int thinktime; |
9c1f7434 | 232 | unsigned int thinktime_blocks; |
ebac4655 JA |
233 | unsigned int fsync_blocks; |
234 | unsigned int start_delay; | |
906c8d75 | 235 | unsigned long timeout; |
ebac4655 | 236 | unsigned int overwrite; |
ebac4655 | 237 | unsigned int bw_avg_time; |
ebac4655 | 238 | unsigned int loops; |
20dc95c4 JA |
239 | unsigned long long zone_size; |
240 | unsigned long long zone_skip; | |
e9c047a0 | 241 | enum fio_memtype mem_type; |
313cb206 JA |
242 | char *mmapfile; |
243 | int mmapfd; | |
ebac4655 JA |
244 | unsigned int stonewall; |
245 | unsigned int numjobs; | |
ebac4655 JA |
246 | unsigned int iodepth; |
247 | os_cpu_mask_t cpumask; | |
aea47d44 | 248 | unsigned int iolog; |
843a7413 | 249 | unsigned int read_iolog; |
a6ccc7be JA |
250 | unsigned int rwmixcycle; |
251 | unsigned int rwmixread; | |
e1f36503 | 252 | unsigned int rwmixwrite; |
b6f4d880 | 253 | unsigned int nice; |
aea47d44 | 254 | |
076efc7c JA |
255 | char *read_iolog_file; |
256 | char *write_iolog_file; | |
843a7413 JA |
257 | void *iolog_buf; |
258 | FILE *iolog_f; | |
ebac4655 | 259 | |
da86774e | 260 | char *sysfs_root; |
da86774e JA |
261 | char *ioscheduler; |
262 | ||
6dfd46b9 JA |
263 | os_random_state_t bsrange_state; |
264 | os_random_state_t verify_state; | |
ebac4655 JA |
265 | |
266 | int shm_id; | |
267 | ||
e9c047a0 JA |
268 | /* |
269 | * IO engine hooks, contains everything needed to submit an io_u | |
270 | * to any of the available IO engines. | |
271 | */ | |
2866c82d | 272 | struct ioengine_ops *io_ops; |
ebac4655 | 273 | |
e9c047a0 JA |
274 | /* |
275 | * Current IO depth and list of free and busy io_u's. | |
276 | */ | |
ebac4655 | 277 | unsigned int cur_depth; |
71619dc2 JA |
278 | unsigned int io_u_map[FIO_IO_U_MAP_NR]; |
279 | unsigned long total_io_u; | |
ebac4655 JA |
280 | struct list_head io_u_freelist; |
281 | struct list_head io_u_busylist; | |
282 | ||
e9c047a0 JA |
283 | /* |
284 | * Rate state | |
285 | */ | |
ebac4655 JA |
286 | unsigned int rate; |
287 | unsigned int ratemin; | |
288 | unsigned int ratecycle; | |
289 | unsigned long rate_usec_cycle; | |
290 | long rate_pending_usleep; | |
291 | unsigned long rate_bytes; | |
292 | struct timeval lastrate; | |
293 | ||
294 | unsigned long runtime[2]; /* msec */ | |
295 | unsigned long long io_size; | |
53cdc686 JA |
296 | unsigned long long total_file_size; |
297 | unsigned long long start_offset; | |
ebac4655 JA |
298 | unsigned long long total_io_size; |
299 | ||
9104f874 JA |
300 | unsigned long long io_blocks[2]; |
301 | unsigned long long io_bytes[2]; | |
302 | unsigned long long zone_bytes; | |
303 | unsigned long long this_io_bytes[2]; | |
bbfd6b00 | 304 | volatile int mutex; |
ebac4655 | 305 | |
e9c047a0 JA |
306 | /* |
307 | * State for random io, a bitmap of blocks done vs not done | |
308 | */ | |
6dfd46b9 | 309 | os_random_state_t random_state; |
ebac4655 | 310 | |
b990b5c0 JA |
311 | /* |
312 | * CPU "io" cycle burner | |
313 | */ | |
314 | unsigned int cpuload; | |
315 | unsigned int cpucycle; | |
316 | ||
ebac4655 JA |
317 | /* |
318 | * bandwidth and latency stats | |
319 | */ | |
320 | struct io_stat clat_stat[2]; /* completion latency */ | |
321 | struct io_stat slat_stat[2]; /* submission latency */ | |
322 | struct io_stat bw_stat[2]; /* bandwidth stats */ | |
323 | ||
9104f874 | 324 | unsigned long long stat_io_bytes[2]; |
ebac4655 JA |
325 | struct timeval stat_sample_time[2]; |
326 | ||
327 | struct io_log *slat_log; | |
328 | struct io_log *clat_log; | |
329 | struct io_log *bw_log; | |
330 | ||
331 | struct timeval start; /* start of this loop */ | |
332 | struct timeval epoch; /* time job was started */ | |
69008999 | 333 | struct timeval end_time;/* time job ended */ |
ebac4655 | 334 | |
e9c047a0 JA |
335 | /* |
336 | * fio system usage accounting | |
337 | */ | |
ebac4655 JA |
338 | struct rusage ru_start; |
339 | struct rusage ru_end; | |
340 | unsigned long usr_time; | |
341 | unsigned long sys_time; | |
342 | unsigned long ctx; | |
343 | ||
e9c047a0 JA |
344 | /* |
345 | * read/write mixed workload state | |
346 | */ | |
6dfd46b9 | 347 | os_random_state_t rwmix_state; |
a6ccc7be | 348 | struct timeval rwmix_switch; |
e9c047a0 | 349 | enum fio_ddir rwmix_ddir; |
a6ccc7be | 350 | |
4e0ba8af JA |
351 | /* |
352 | * Pre-run and post-run shell | |
353 | */ | |
354 | char *exec_prerun; | |
355 | char *exec_postrun; | |
356 | ||
e9c047a0 JA |
357 | /* |
358 | * IO historic logs | |
359 | */ | |
ebac4655 | 360 | struct list_head io_hist_list; |
aea47d44 | 361 | struct list_head io_log_list; |
ebac4655 JA |
362 | }; |
363 | ||
b990b5c0 | 364 | #define __td_verror(td, err, msg) \ |
ebac4655 JA |
365 | do { \ |
366 | int e = (err); \ | |
367 | (td)->error = e; \ | |
b990b5c0 | 368 | snprintf(td->verror, sizeof(td->verror) - 1, "file:%s:%d, error=%s", __FILE__, __LINE__, (msg)); \ |
ebac4655 JA |
369 | } while (0) |
370 | ||
b990b5c0 JA |
371 | |
372 | #define td_verror(td, err) __td_verror((td), (err), strerror((err))) | |
373 | #define td_vmsg(td, err, msg) __td_verror((td), (err), (msg)) | |
374 | ||
ebac4655 JA |
375 | extern int exitall_on_terminate; |
376 | extern int thread_number; | |
377 | extern int shm_id; | |
378 | extern int groupid; | |
c6ae0a5b | 379 | extern int terse_output; |
eb8bbf48 JA |
380 | extern FILE *f_out; |
381 | extern FILE *f_err; | |
53cdc686 | 382 | extern int temp_stall_ts; |
1e97cce9 | 383 | extern unsigned long long mlock_size; |
ebac4655 JA |
384 | |
385 | extern struct thread_data *threads; | |
386 | ||
ebac4655 JA |
387 | #define td_read(td) ((td)->ddir == DDIR_READ) |
388 | #define td_write(td) ((td)->ddir == DDIR_WRITE) | |
3d60d1ed | 389 | #define td_rw(td) ((td)->iomix != 0) |
ebac4655 JA |
390 | |
391 | #define BLOCKS_PER_MAP (8 * sizeof(long)) | |
a00735e6 | 392 | #define TO_MAP_BLOCK(td, f, b) ((b) - ((f)->file_offset / (td)->rw_min_bs)) |
53cdc686 JA |
393 | #define RAND_MAP_IDX(td, f, b) (TO_MAP_BLOCK(td, f, b) / BLOCKS_PER_MAP) |
394 | #define RAND_MAP_BIT(td, f, b) (TO_MAP_BLOCK(td, f, b) & (BLOCKS_PER_MAP - 1)) | |
ebac4655 JA |
395 | |
396 | #define MAX_JOBS (1024) | |
397 | ||
87dc1ab1 JA |
398 | static inline int should_fsync(struct thread_data *td) |
399 | { | |
400 | if (td->last_was_sync) | |
401 | return 0; | |
402 | if (td->odirect) | |
403 | return 0; | |
404 | if (td_write(td) || td_rw(td) || td->override_sync) | |
405 | return 1; | |
406 | ||
407 | return 0; | |
408 | } | |
409 | ||
ebac4655 JA |
410 | struct disk_util_stat { |
411 | unsigned ios[2]; | |
412 | unsigned merges[2]; | |
413 | unsigned long long sectors[2]; | |
414 | unsigned ticks[2]; | |
415 | unsigned io_ticks; | |
416 | unsigned time_in_queue; | |
417 | }; | |
418 | ||
419 | struct disk_util { | |
420 | struct list_head list; | |
421 | ||
422 | char *name; | |
423 | char path[256]; | |
424 | dev_t dev; | |
425 | ||
426 | struct disk_util_stat dus; | |
427 | struct disk_util_stat last_dus; | |
428 | ||
429 | unsigned long msec; | |
430 | struct timeval time; | |
431 | }; | |
432 | ||
433 | struct io_completion_data { | |
434 | int nr; /* input */ | |
435 | ||
436 | int error; /* output */ | |
437 | unsigned long bytes_done[2]; /* output */ | |
02bcaa8c | 438 | struct timeval time; /* output */ |
ebac4655 JA |
439 | }; |
440 | ||
441 | #define DISK_UTIL_MSEC (250) | |
442 | ||
6a0106a0 JA |
443 | #ifndef min |
444 | #define min(a, b) ((a) < (b) ? (a) : (b)) | |
445 | #endif | |
a00735e6 JA |
446 | #ifndef max |
447 | #define max(a, b) ((a) > (b) ? (a) : (b)) | |
448 | #endif | |
6a0106a0 | 449 | |
6796209a JA |
450 | /* |
451 | * Log exports | |
452 | */ | |
453 | extern int read_iolog_get(struct thread_data *, struct io_u *); | |
454 | extern void write_iolog_put(struct thread_data *, struct io_u *); | |
455 | extern int init_iolog(struct thread_data *td); | |
456 | extern void log_io_piece(struct thread_data *, struct io_u *); | |
457 | extern void prune_io_piece_log(struct thread_data *); | |
458 | extern void write_iolog_close(struct thread_data *); | |
459 | ||
460 | /* | |
461 | * Logging | |
462 | */ | |
1e97cce9 JA |
463 | extern void add_clat_sample(struct thread_data *, enum fio_ddir, unsigned long); |
464 | extern void add_slat_sample(struct thread_data *, enum fio_ddir, unsigned long); | |
465 | extern void add_bw_sample(struct thread_data *, enum fio_ddir, struct timeval *); | |
6796209a JA |
466 | extern void show_run_stats(void); |
467 | extern void init_disk_util(struct thread_data *); | |
468 | extern void update_rusage_stat(struct thread_data *); | |
469 | extern void update_io_ticks(void); | |
470 | extern void disk_util_timer_arm(void); | |
8914a9d8 JA |
471 | extern void setup_log(struct io_log **); |
472 | extern void finish_log(struct thread_data *, struct io_log *, const char *); | |
bb3884d8 | 473 | extern void __finish_log(struct io_log *, const char *); |
8914a9d8 | 474 | extern int setup_rate(struct thread_data *); |
bb3884d8 JA |
475 | extern struct io_log *agg_io_log[2]; |
476 | extern int write_bw_log; | |
477 | extern void add_agg_sample(unsigned long, enum fio_ddir); | |
6796209a JA |
478 | |
479 | /* | |
480 | * Time functions | |
481 | */ | |
482 | extern unsigned long utime_since(struct timeval *, struct timeval *); | |
69008999 | 483 | extern unsigned long utime_since_now(struct timeval *); |
6796209a JA |
484 | extern unsigned long mtime_since(struct timeval *, struct timeval *); |
485 | extern unsigned long mtime_since_now(struct timeval *); | |
486 | extern unsigned long time_since_now(struct timeval *); | |
263e529f | 487 | extern unsigned long mtime_since_genesis(void); |
b990b5c0 | 488 | extern void __usec_sleep(unsigned int); |
6796209a | 489 | extern void usec_sleep(struct thread_data *, unsigned long); |
a00735e6 | 490 | extern void rate_throttle(struct thread_data *, unsigned long, unsigned int, int); |
6043c579 | 491 | extern void fill_start_time(struct timeval *); |
02bcaa8c | 492 | extern void fio_gettime(struct timeval *, void *); |
6796209a | 493 | |
8914a9d8 JA |
494 | /* |
495 | * Init functions | |
496 | */ | |
497 | extern int parse_options(int, char **); | |
498 | extern int init_random_state(struct thread_data *); | |
499 | ||
53cdc686 JA |
500 | /* |
501 | * File setup/shutdown | |
502 | */ | |
503 | extern void close_files(struct thread_data *); | |
504 | extern int setup_files(struct thread_data *); | |
21972cde | 505 | extern int open_files(struct thread_data *); |
e5b401d4 | 506 | extern int file_invalidate_cache(struct thread_data *, struct fio_file *); |
53cdc686 | 507 | |
263e529f JA |
508 | /* |
509 | * ETA/status stuff | |
510 | */ | |
511 | extern void print_thread_status(void); | |
512 | extern void print_status_init(int); | |
513 | ||
514 | /* | |
515 | * Thread life cycle. Once a thread has a runstate beyond TD_INITIALIZED, it | |
516 | * will never back again. It may cycle between running/verififying/fsyncing. | |
517 | * Once the thread reaches TD_EXITED, it is just waiting for the core to | |
518 | * reap it. | |
519 | */ | |
520 | enum { | |
521 | TD_NOT_CREATED = 0, | |
522 | TD_CREATED, | |
523 | TD_INITIALIZED, | |
524 | TD_RUNNING, | |
525 | TD_VERIFYING, | |
526 | TD_FSYNCING, | |
527 | TD_EXITED, | |
528 | TD_REAPED, | |
529 | }; | |
530 | ||
e29d1b70 JA |
531 | /* |
532 | * Verify helpers | |
533 | */ | |
534 | extern void populate_verify_io_u(struct thread_data *, struct io_u *); | |
535 | extern int get_next_verify(struct thread_data *td, struct io_u *); | |
a9619d44 | 536 | extern int do_io_u_verify(struct thread_data *, struct io_u **); |
e29d1b70 | 537 | |
2f9ade3c JA |
538 | /* |
539 | * Memory helpers | |
540 | */ | |
541 | extern int fio_pin_memory(void); | |
542 | extern void fio_unpin_memory(void); | |
543 | extern int allocate_io_mem(struct thread_data *); | |
544 | extern void free_io_mem(struct thread_data *); | |
545 | ||
10ba535a JA |
546 | /* |
547 | * io unit handling | |
548 | */ | |
549 | #define queue_full(td) list_empty(&(td)->io_u_freelist) | |
550 | extern struct io_u *__get_io_u(struct thread_data *); | |
551 | extern struct io_u *get_io_u(struct thread_data *, struct fio_file *); | |
552 | extern void put_io_u(struct thread_data *, struct io_u *); | |
553 | extern void ios_completed(struct thread_data *, struct io_completion_data *); | |
554 | extern void io_completed(struct thread_data *, struct io_u *, struct io_completion_data *); | |
555 | ||
556 | /* | |
557 | * io engine entry points | |
558 | */ | |
8c16d840 | 559 | extern int td_io_init(struct thread_data *); |
10ba535a JA |
560 | extern int td_io_prep(struct thread_data *, struct io_u *); |
561 | extern int td_io_queue(struct thread_data *, struct io_u *); | |
562 | extern int td_io_sync(struct thread_data *, struct fio_file *); | |
563 | extern int td_io_getevents(struct thread_data *, int, int, struct timespec *); | |
564 | ||
bbfd6b00 JA |
565 | /* |
566 | * This is a pretty crappy semaphore implementation, but with the use that fio | |
567 | * has (just signalling start/go conditions), it doesn't have to be better. | |
568 | * Naturally this would not work for any type of contended semaphore or | |
569 | * for real locking. | |
570 | */ | |
1056eaad | 571 | static inline void fio_sem_init(volatile int *sem, int val) |
bbfd6b00 JA |
572 | { |
573 | *sem = val; | |
574 | } | |
575 | ||
1056eaad | 576 | static inline void fio_sem_down(volatile int *sem) |
bbfd6b00 JA |
577 | { |
578 | while (*sem == 0) | |
579 | usleep(10000); | |
580 | ||
581 | (*sem)--; | |
582 | } | |
583 | ||
1056eaad | 584 | static inline void fio_sem_up(volatile int *sem) |
bbfd6b00 JA |
585 | { |
586 | (*sem)++; | |
587 | } | |
588 | ||
3b70d7e5 JA |
589 | /* |
590 | * If logging output to a file, stderr should go to both stderr and f_err | |
591 | */ | |
592 | #define log_err(args...) do { \ | |
593 | fprintf(f_err, ##args); \ | |
594 | if (f_err != stderr) \ | |
595 | fprintf(stderr, ##args); \ | |
596 | } while (0) | |
597 | ||
2866c82d | 598 | struct ioengine_ops { |
5f350952 | 599 | struct list_head list; |
2866c82d JA |
600 | char name[16]; |
601 | int version; | |
602 | int flags; | |
ea2877a4 | 603 | int (*setup)(struct thread_data *); |
2866c82d JA |
604 | int (*init)(struct thread_data *); |
605 | int (*prep)(struct thread_data *, struct io_u *); | |
606 | int (*queue)(struct thread_data *, struct io_u *); | |
607 | int (*getevents)(struct thread_data *, int, int, struct timespec *); | |
608 | struct io_u *(*event)(struct thread_data *, int); | |
609 | int (*cancel)(struct thread_data *, struct io_u *); | |
610 | void (*cleanup)(struct thread_data *); | |
2866c82d JA |
611 | void *data; |
612 | void *dlhandle; | |
613 | }; | |
614 | ||
87dc1ab1 | 615 | #define FIO_IOOPS_VERSION 3 |
2866c82d | 616 | |
b4692828 | 617 | extern struct ioengine_ops *load_ioengine(struct thread_data *, const char *); |
5f350952 JA |
618 | extern int register_ioengine(struct ioengine_ops *); |
619 | extern void unregister_ioengine(struct ioengine_ops *); | |
2866c82d JA |
620 | extern void close_ioengine(struct thread_data *); |
621 | ||
622 | /* | |
623 | * Mark unused variables passed to ops functions as unused, to silence gcc | |
624 | */ | |
625 | #define fio_unused __attribute((__unused__)) | |
5f350952 JA |
626 | #define fio_init __attribute__((constructor)) |
627 | #define fio_exit __attribute__((destructor)) | |
2866c82d | 628 | |
34572e28 JA |
629 | #define for_each_td(td, i) \ |
630 | for ((i) = 0, (td) = &threads[0]; (i) < (int) thread_number; (i)++, (td)++) | |
53cdc686 | 631 | #define for_each_file(td, f, i) \ |
34572e28 | 632 | for ((i) = 0, (f) = &(td)->files[0]; (i) < (int) (td)->nr_files; (i)++, (f)++) |
53cdc686 | 633 | |
ebac4655 | 634 | #endif |