Commit | Line | Data |
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2e1df07d JA |
1 | /* |
2 | * fio - the flexible io tester | |
3 | * | |
4 | * Copyright (C) 2005 Jens Axboe <axboe@suse.de> | |
5 | * Copyright (C) 2006-2012 Jens Axboe <axboe@kernel.dk> | |
6 | * | |
7 | * The license below covers all files distributed with fio unless otherwise | |
8 | * noted in the file itself. | |
9 | * | |
10 | * This program is free software; you can redistribute it and/or modify | |
11 | * it under the terms of the GNU General Public License version 2 as | |
12 | * published by the Free Software Foundation. | |
13 | * | |
14 | * This program is distributed in the hope that it will be useful, | |
15 | * but WITHOUT ANY WARRANTY; without even the implied warranty of | |
16 | * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the | |
17 | * GNU General Public License for more details. | |
18 | * | |
19 | * You should have received a copy of the GNU General Public License | |
20 | * along with this program; if not, write to the Free Software | |
fa07eaa6 | 21 | * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA. |
2e1df07d JA |
22 | * |
23 | */ | |
24 | ||
25 | #include <string.h> | |
59dfce57 | 26 | #include <signal.h> |
a569b45f JA |
27 | #include <stdint.h> |
28 | #include <locale.h> | |
4a851614 | 29 | #include <fcntl.h> |
a569b45f | 30 | |
2e1df07d | 31 | #include "fio.h" |
a569b45f JA |
32 | #include "smalloc.h" |
33 | #include "os/os.h" | |
243bfe19 | 34 | #include "filelock.h" |
a39fb9ea | 35 | #include "helper_thread.h" |
d619275c | 36 | #include "filehash.h" |
2e1df07d | 37 | |
a3efc919 | 38 | FLIST_HEAD(disk_list); |
a3efc919 JA |
39 | |
40 | unsigned long arch_flags = 0; | |
41 | ||
a569b45f JA |
42 | uintptr_t page_mask = 0; |
43 | uintptr_t page_size = 0; | |
44 | ||
c6da2c34 | 45 | /* see os/os.h */ |
2e1df07d JA |
46 | static const char *fio_os_strings[os_nr] = { |
47 | "Invalid", | |
48 | "Linux", | |
49 | "AIX", | |
50 | "FreeBSD", | |
51 | "HP-UX", | |
52 | "OSX", | |
53 | "NetBSD", | |
1c7eaa7b | 54 | "OpenBSD", |
2e1df07d | 55 | "Solaris", |
1c7eaa7b JA |
56 | "Windows", |
57 | "Android", | |
239b2882 | 58 | "DragonFly", |
2e1df07d JA |
59 | }; |
60 | ||
c6da2c34 | 61 | /* see arch/arch.h */ |
2e1df07d JA |
62 | static const char *fio_arch_strings[arch_nr] = { |
63 | "Invalid", | |
64 | "x86-64", | |
65 | "x86", | |
66 | "ppc", | |
67 | "ia64", | |
68 | "s390", | |
69 | "alpha", | |
70 | "sparc", | |
71 | "sparc64", | |
72 | "arm", | |
73 | "sh", | |
74 | "hppa", | |
c6da2c34 TK |
75 | "mips", |
76 | "aarch64", | |
2e1df07d JA |
77 | "generic" |
78 | }; | |
79 | ||
ac28d905 | 80 | static void reset_io_counters(struct thread_data *td, int all) |
2e1df07d | 81 | { |
6eaf09d6 | 82 | int ddir; |
bcd5abfa | 83 | |
ac28d905 JA |
84 | if (all) { |
85 | for (ddir = 0; ddir < DDIR_RWDIR_CNT; ddir++) { | |
86 | td->stat_io_bytes[ddir] = 0; | |
87 | td->this_io_bytes[ddir] = 0; | |
88 | td->stat_io_blocks[ddir] = 0; | |
89 | td->this_io_blocks[ddir] = 0; | |
f5204b8a | 90 | td->last_rate_check_bytes[ddir] = 0; |
91 | td->last_rate_check_blocks[ddir] = 0; | |
ac28d905 JA |
92 | td->bytes_done[ddir] = 0; |
93 | td->rate_io_issue_bytes[ddir] = 0; | |
94 | td->rate_next_io_time[ddir] = 0; | |
182cab24 | 95 | td->last_usec[ddir] = 0; |
ac28d905 | 96 | } |
191d6634 | 97 | td->bytes_verified = 0; |
6eaf09d6 | 98 | } |
ac28d905 | 99 | |
2e1df07d | 100 | td->zone_bytes = 0; |
2e1df07d | 101 | |
2ea93f98 | 102 | td->last_was_sync = false; |
bcd5abfa | 103 | td->rwmix_issues = 0; |
2e1df07d JA |
104 | |
105 | /* | |
106 | * reset file done count if we are to start over | |
107 | */ | |
336e3bfb | 108 | if (td->o.time_based || td->loops > 1 || td->o.do_verify) |
2e1df07d JA |
109 | td->nr_done_files = 0; |
110 | } | |
111 | ||
ac28d905 | 112 | void clear_io_state(struct thread_data *td, int all) |
2e1df07d JA |
113 | { |
114 | struct fio_file *f; | |
115 | unsigned int i; | |
116 | ||
ac28d905 | 117 | reset_io_counters(td, all); |
2e1df07d JA |
118 | |
119 | close_files(td); | |
ec803e97 | 120 | for_each_file(td, f, i) { |
2e1df07d | 121 | fio_file_clear_done(f); |
ec803e97 BF |
122 | f->file_offset = get_start_offset(td, f); |
123 | } | |
2e1df07d JA |
124 | |
125 | /* | |
1520f26e | 126 | * Re-Seed random number generator if rand_repeatable is true |
2e1df07d | 127 | */ |
1520f26e D |
128 | if (td->o.rand_repeatable) |
129 | td_fill_rand_seeds(td); | |
2e1df07d JA |
130 | } |
131 | ||
132 | void reset_all_stats(struct thread_data *td) | |
133 | { | |
cfc4ad2e | 134 | unsigned long long b; |
2e1df07d JA |
135 | int i; |
136 | ||
ac28d905 | 137 | reset_io_counters(td, 1); |
2e1df07d | 138 | |
cfc4ad2e | 139 | b = ddir_rw_sum(td->thinktime_blocks_counter); |
140 | td->last_thinktime_blocks -= b; | |
141 | ||
6eaf09d6 | 142 | for (i = 0; i < DDIR_RWDIR_CNT; i++) { |
2e1df07d JA |
143 | td->io_bytes[i] = 0; |
144 | td->io_blocks[i] = 0; | |
145 | td->io_issues[i] = 0; | |
146 | td->ts.total_io_u[i] = 0; | |
6eaf09d6 | 147 | td->ts.runtime[i] = 0; |
2e1df07d JA |
148 | } |
149 | ||
d5b3cfd4 | 150 | set_epoch_time(td, td->o.log_unix_epoch | td->o.log_alternate_epoch, td->o.log_alternate_epoch_clock_id); |
8b6a404c VF |
151 | memcpy(&td->start, &td->epoch, sizeof(td->epoch)); |
152 | memcpy(&td->iops_sample_time, &td->epoch, sizeof(td->epoch)); | |
153 | memcpy(&td->bw_sample_time, &td->epoch, sizeof(td->epoch)); | |
154 | memcpy(&td->ss.prev_time, &td->epoch, sizeof(td->epoch)); | |
3e260a46 | 155 | |
cfc4ad2e | 156 | td->last_thinktime = td->epoch; |
157 | ||
6bb58215 | 158 | lat_target_reset(td); |
210dd0fc | 159 | clear_rusage_stat(td); |
a47591e4 | 160 | helper_reset(); |
2e1df07d JA |
161 | } |
162 | ||
163 | void reset_fio_state(void) | |
164 | { | |
2fbe1e19 JA |
165 | int i; |
166 | ||
2e1df07d JA |
167 | groupid = 0; |
168 | thread_number = 0; | |
2fbe1e19 JA |
169 | cur_segment = 0; |
170 | for (i = 0; i < nr_segments; i++) | |
171 | segments[i].nr_threads = 0; | |
2caefeec | 172 | stat_number = 0; |
2e1df07d JA |
173 | done_secs = 0; |
174 | } | |
175 | ||
176 | const char *fio_get_os_string(int nr) | |
177 | { | |
178 | if (nr < os_nr) | |
179 | return fio_os_strings[nr]; | |
180 | ||
181 | return NULL; | |
182 | } | |
183 | ||
184 | const char *fio_get_arch_string(int nr) | |
185 | { | |
186 | if (nr < arch_nr) | |
187 | return fio_arch_strings[nr]; | |
188 | ||
189 | return NULL; | |
190 | } | |
191 | ||
6e760cf3 JA |
192 | static const char *td_runstates[] = { |
193 | "NOT_CREATED", | |
194 | "CREATED", | |
195 | "INITIALIZED", | |
196 | "RAMP", | |
197 | "SETTING_UP", | |
198 | "RUNNING", | |
199 | "PRE_READING", | |
200 | "VERIFYING", | |
201 | "FSYNCING", | |
202 | "FINISHING", | |
203 | "EXITED", | |
204 | "REAPED", | |
205 | }; | |
206 | ||
9cc8cb91 | 207 | const char *runstate_to_name(int runstate) |
6e760cf3 JA |
208 | { |
209 | compiletime_assert(TD_LAST == 12, "td runstate list"); | |
210 | if (runstate >= 0 && runstate < TD_LAST) | |
211 | return td_runstates[runstate]; | |
212 | ||
213 | return "invalid"; | |
214 | } | |
215 | ||
2e1df07d JA |
216 | void td_set_runstate(struct thread_data *td, int runstate) |
217 | { | |
218 | if (td->runstate == runstate) | |
219 | return; | |
220 | ||
6e760cf3 JA |
221 | dprint(FD_PROCESS, "pid=%d: runstate %s -> %s\n", (int) td->pid, |
222 | runstate_to_name(td->runstate), | |
223 | runstate_to_name(runstate)); | |
2e1df07d JA |
224 | td->runstate = runstate; |
225 | } | |
226 | ||
8edd973d JA |
227 | int td_bump_runstate(struct thread_data *td, int new_state) |
228 | { | |
229 | int old_state = td->runstate; | |
230 | ||
231 | td_set_runstate(td, new_state); | |
232 | return old_state; | |
233 | } | |
234 | ||
235 | void td_restore_runstate(struct thread_data *td, int old_state) | |
236 | { | |
237 | td_set_runstate(td, old_state); | |
238 | } | |
239 | ||
ebea2133 JA |
240 | void fio_mark_td_terminate(struct thread_data *td) |
241 | { | |
242 | fio_gettime(&td->terminate_time, NULL); | |
243 | write_barrier(); | |
2ea93f98 | 244 | td->terminate = true; |
ebea2133 JA |
245 | } |
246 | ||
64402a8a | 247 | void fio_terminate_threads(unsigned int group_id, unsigned int terminate) |
2e1df07d | 248 | { |
41fa20ec | 249 | pid_t pid = getpid(); |
2e1df07d JA |
250 | |
251 | dprint(FD_PROCESS, "terminate group_id=%d\n", group_id); | |
252 | ||
da8f124f | 253 | for_each_td(td) { |
64402a8a HW |
254 | if ((terminate == TERMINATE_GROUP && group_id == TERMINATE_ALL) || |
255 | (terminate == TERMINATE_GROUP && group_id == td->groupid) || | |
256 | (terminate == TERMINATE_STONEWALL && td->runstate >= TD_RUNNING) || | |
257 | (terminate == TERMINATE_ALL)) { | |
2e1df07d JA |
258 | dprint(FD_PROCESS, "setting terminate on %s/%d\n", |
259 | td->o.name, (int) td->pid); | |
cba5460c JA |
260 | |
261 | if (td->terminate) | |
262 | continue; | |
263 | ||
ebea2133 | 264 | fio_mark_td_terminate(td); |
2e1df07d JA |
265 | td->o.start_delay = 0; |
266 | ||
267 | /* | |
268 | * if the thread is running, just let it exit | |
269 | */ | |
36d80bc7 | 270 | if (!td->pid || pid == td->pid) |
2e1df07d JA |
271 | continue; |
272 | else if (td->runstate < TD_RAMP) | |
273 | kill(td->pid, SIGTERM); | |
36d80bc7 | 274 | else { |
2e1df07d JA |
275 | struct ioengine_ops *ops = td->io_ops; |
276 | ||
36d80bc7 JA |
277 | if (ops && ops->terminate) |
278 | ops->terminate(td); | |
2e1df07d JA |
279 | } |
280 | } | |
da8f124f | 281 | } end_for_each(); |
2e1df07d JA |
282 | } |
283 | ||
046395d7 JA |
284 | int fio_running_or_pending_io_threads(void) |
285 | { | |
a691d82f | 286 | int nr_io_threads = 0; |
046395d7 | 287 | |
da8f124f | 288 | for_each_td(td) { |
356ef1a1 | 289 | if (td->io_ops_init && td_ioengine_flagged(td, FIO_NOIO)) |
046395d7 | 290 | continue; |
a691d82f | 291 | nr_io_threads++; |
046395d7 JA |
292 | if (td->runstate < TD_EXITED) |
293 | return 1; | |
da8f124f | 294 | } end_for_each(); |
046395d7 | 295 | |
a691d82f TK |
296 | if (!nr_io_threads) |
297 | return -1; /* we only had cpuio threads to begin with */ | |
046395d7 JA |
298 | return 0; |
299 | } | |
300 | ||
3a35845f | 301 | int fio_set_fd_nonblocking(int fd, const char *who) |
4a851614 JA |
302 | { |
303 | int flags; | |
304 | ||
305 | flags = fcntl(fd, F_GETFL); | |
306 | if (flags < 0) | |
307 | log_err("fio: %s failed to get file flags: %s\n", who, strerror(errno)); | |
308 | else { | |
3a35845f JA |
309 | int new_flags = flags | O_NONBLOCK; |
310 | ||
311 | new_flags = fcntl(fd, F_SETFL, new_flags); | |
312 | if (new_flags < 0) | |
4a851614 JA |
313 | log_err("fio: %s failed to get file flags: %s\n", who, strerror(errno)); |
314 | } | |
3a35845f JA |
315 | |
316 | return flags; | |
4a851614 JA |
317 | } |
318 | ||
1a50e7f0 TK |
319 | enum { |
320 | ENDIAN_INVALID_BE = 1, | |
321 | ENDIAN_INVALID_LE, | |
322 | ENDIAN_INVALID_CONFIG, | |
323 | ENDIAN_BROKEN, | |
324 | }; | |
325 | ||
a569b45f JA |
326 | static int endian_check(void) |
327 | { | |
328 | union { | |
329 | uint8_t c[8]; | |
330 | uint64_t v; | |
331 | } u; | |
332 | int le = 0, be = 0; | |
333 | ||
334 | u.v = 0x12; | |
335 | if (u.c[7] == 0x12) | |
336 | be = 1; | |
337 | else if (u.c[0] == 0x12) | |
338 | le = 1; | |
339 | ||
340 | #if defined(CONFIG_LITTLE_ENDIAN) | |
341 | if (be) | |
1a50e7f0 | 342 | return ENDIAN_INVALID_BE; |
a569b45f JA |
343 | #elif defined(CONFIG_BIG_ENDIAN) |
344 | if (le) | |
1a50e7f0 | 345 | return ENDIAN_INVALID_LE; |
a569b45f | 346 | #else |
1a50e7f0 | 347 | return ENDIAN_INVALID_CONFIG; |
a569b45f JA |
348 | #endif |
349 | ||
350 | if (!le && !be) | |
1a50e7f0 | 351 | return ENDIAN_BROKEN; |
a569b45f JA |
352 | |
353 | return 0; | |
354 | } | |
355 | ||
356 | int initialize_fio(char *envp[]) | |
357 | { | |
358 | long ps; | |
1a50e7f0 | 359 | int err; |
a569b45f | 360 | |
976a7756 JA |
361 | /* |
362 | * We need these to be properly 64-bit aligned, otherwise we | |
363 | * can run into problems on archs that fault on unaligned fp | |
364 | * access (ARM). | |
365 | */ | |
dbf285f7 | 366 | compiletime_assert((offsetof(struct thread_data, ts) % sizeof(void *)) == 0, "ts"); |
24ffb6f8 | 367 | compiletime_assert((offsetof(struct thread_stat, percentile_list) % 8) == 0, "stat percentile_list"); |
3d0ebb30 GG |
368 | compiletime_assert((offsetof(struct thread_stat, total_run_time) % 8) == 0, "total_run_time"); |
369 | compiletime_assert((offsetof(struct thread_stat, total_err_count) % 8) == 0, "total_err_count"); | |
24ffb6f8 | 370 | compiletime_assert((offsetof(struct thread_stat, latency_percentile) % 8) == 0, "stat latency_percentile"); |
dbf285f7 | 371 | compiletime_assert((offsetof(struct thread_data, ts.clat_stat) % 8) == 0, "ts.clat_stat"); |
24ffb6f8 JA |
372 | compiletime_assert((offsetof(struct thread_options_pack, zipf_theta) % 8) == 0, "zipf_theta"); |
373 | compiletime_assert((offsetof(struct thread_options_pack, pareto_h) % 8) == 0, "pareto_h"); | |
374 | compiletime_assert((offsetof(struct thread_options_pack, percentile_list) % 8) == 0, "percentile_list"); | |
b8c6b4de | 375 | compiletime_assert((offsetof(struct thread_options_pack, latency_percentile) % 8) == 0, "latency_percentile"); |
dbf285f7 | 376 | compiletime_assert((offsetof(struct jobs_eta, m_rate) % 8) == 0, "m_rate"); |
976a7756 | 377 | |
9c6f1e75 | 378 | compiletime_assert(__TD_F_LAST <= TD_ENG_FLAG_SHIFT, "TD_ENG_FLAG_SHIFT"); |
3154f1ed | 379 | compiletime_assert(BSSPLIT_MAX <= ZONESPLIT_MAX, "bsssplit/zone max"); |
9c6f1e75 | 380 | |
1a50e7f0 TK |
381 | err = endian_check(); |
382 | if (err) { | |
a569b45f | 383 | log_err("fio: endianness settings appear wrong.\n"); |
1a50e7f0 TK |
384 | switch (err) { |
385 | case ENDIAN_INVALID_BE: | |
386 | log_err("fio: got big-endian when configured for little\n"); | |
387 | break; | |
388 | case ENDIAN_INVALID_LE: | |
389 | log_err("fio: got little-endian when configured for big\n"); | |
390 | break; | |
391 | case ENDIAN_INVALID_CONFIG: | |
392 | log_err("fio: not configured to any endianness\n"); | |
393 | break; | |
394 | case ENDIAN_BROKEN: | |
395 | log_err("fio: failed to detect endianness\n"); | |
396 | break; | |
397 | default: | |
398 | assert(0); | |
399 | break; | |
400 | } | |
a569b45f JA |
401 | log_err("fio: please report this to fio@vger.kernel.org\n"); |
402 | return 1; | |
403 | } | |
404 | ||
405 | #if !defined(CONFIG_GETTIMEOFDAY) && !defined(CONFIG_CLOCK_GETTIME) | |
406 | #error "No available clock source!" | |
407 | #endif | |
408 | ||
409 | arch_init(envp); | |
410 | ||
411 | sinit(); | |
412 | ||
243bfe19 JA |
413 | if (fio_filelock_init()) { |
414 | log_err("fio: failed initializing filelock subsys\n"); | |
415 | return 1; | |
416 | } | |
417 | ||
d619275c JA |
418 | file_hash_init(); |
419 | ||
a569b45f JA |
420 | /* |
421 | * We need locale for number printing, if it isn't set then just | |
422 | * go with the US format. | |
423 | */ | |
424 | if (!getenv("LC_NUMERIC")) | |
425 | setlocale(LC_NUMERIC, "en_US"); | |
426 | ||
427 | ps = sysconf(_SC_PAGESIZE); | |
428 | if (ps < 0) { | |
429 | log_err("Failed to get page size\n"); | |
430 | return 1; | |
431 | } | |
432 | ||
433 | page_size = ps; | |
434 | page_mask = ps - 1; | |
2e1df07d | 435 | |
a569b45f JA |
436 | fio_keywords_init(); |
437 | return 0; | |
438 | } | |
af1dc266 JA |
439 | |
440 | void deinitialize_fio(void) | |
441 | { | |
442 | fio_keywords_exit(); | |
443 | } |