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