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