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