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 | { | |
2e1df07d JA |
134 | int i; |
135 | ||
ac28d905 | 136 | reset_io_counters(td, 1); |
2e1df07d | 137 | |
6eaf09d6 | 138 | for (i = 0; i < DDIR_RWDIR_CNT; i++) { |
2e1df07d JA |
139 | td->io_bytes[i] = 0; |
140 | td->io_blocks[i] = 0; | |
141 | td->io_issues[i] = 0; | |
142 | td->ts.total_io_u[i] = 0; | |
6eaf09d6 | 143 | td->ts.runtime[i] = 0; |
2e1df07d JA |
144 | } |
145 | ||
d5b3cfd4 | 146 | set_epoch_time(td, td->o.log_unix_epoch | td->o.log_alternate_epoch, td->o.log_alternate_epoch_clock_id); |
8b6a404c VF |
147 | memcpy(&td->start, &td->epoch, sizeof(td->epoch)); |
148 | memcpy(&td->iops_sample_time, &td->epoch, sizeof(td->epoch)); | |
149 | memcpy(&td->bw_sample_time, &td->epoch, sizeof(td->epoch)); | |
150 | memcpy(&td->ss.prev_time, &td->epoch, sizeof(td->epoch)); | |
3e260a46 | 151 | |
6bb58215 | 152 | lat_target_reset(td); |
210dd0fc | 153 | clear_rusage_stat(td); |
a47591e4 | 154 | helper_reset(); |
2e1df07d JA |
155 | } |
156 | ||
157 | void reset_fio_state(void) | |
158 | { | |
2fbe1e19 JA |
159 | int i; |
160 | ||
2e1df07d JA |
161 | groupid = 0; |
162 | thread_number = 0; | |
2fbe1e19 JA |
163 | cur_segment = 0; |
164 | for (i = 0; i < nr_segments; i++) | |
165 | segments[i].nr_threads = 0; | |
2caefeec | 166 | stat_number = 0; |
2e1df07d JA |
167 | done_secs = 0; |
168 | } | |
169 | ||
170 | const char *fio_get_os_string(int nr) | |
171 | { | |
172 | if (nr < os_nr) | |
173 | return fio_os_strings[nr]; | |
174 | ||
175 | return NULL; | |
176 | } | |
177 | ||
178 | const char *fio_get_arch_string(int nr) | |
179 | { | |
180 | if (nr < arch_nr) | |
181 | return fio_arch_strings[nr]; | |
182 | ||
183 | return NULL; | |
184 | } | |
185 | ||
6e760cf3 JA |
186 | static const char *td_runstates[] = { |
187 | "NOT_CREATED", | |
188 | "CREATED", | |
189 | "INITIALIZED", | |
190 | "RAMP", | |
191 | "SETTING_UP", | |
192 | "RUNNING", | |
193 | "PRE_READING", | |
194 | "VERIFYING", | |
195 | "FSYNCING", | |
196 | "FINISHING", | |
197 | "EXITED", | |
198 | "REAPED", | |
199 | }; | |
200 | ||
9cc8cb91 | 201 | const char *runstate_to_name(int runstate) |
6e760cf3 JA |
202 | { |
203 | compiletime_assert(TD_LAST == 12, "td runstate list"); | |
204 | if (runstate >= 0 && runstate < TD_LAST) | |
205 | return td_runstates[runstate]; | |
206 | ||
207 | return "invalid"; | |
208 | } | |
209 | ||
2e1df07d JA |
210 | void td_set_runstate(struct thread_data *td, int runstate) |
211 | { | |
212 | if (td->runstate == runstate) | |
213 | return; | |
214 | ||
6e760cf3 JA |
215 | dprint(FD_PROCESS, "pid=%d: runstate %s -> %s\n", (int) td->pid, |
216 | runstate_to_name(td->runstate), | |
217 | runstate_to_name(runstate)); | |
2e1df07d JA |
218 | td->runstate = runstate; |
219 | } | |
220 | ||
8edd973d JA |
221 | int td_bump_runstate(struct thread_data *td, int new_state) |
222 | { | |
223 | int old_state = td->runstate; | |
224 | ||
225 | td_set_runstate(td, new_state); | |
226 | return old_state; | |
227 | } | |
228 | ||
229 | void td_restore_runstate(struct thread_data *td, int old_state) | |
230 | { | |
231 | td_set_runstate(td, old_state); | |
232 | } | |
233 | ||
ebea2133 JA |
234 | void fio_mark_td_terminate(struct thread_data *td) |
235 | { | |
236 | fio_gettime(&td->terminate_time, NULL); | |
237 | write_barrier(); | |
2ea93f98 | 238 | td->terminate = true; |
ebea2133 JA |
239 | } |
240 | ||
64402a8a | 241 | void fio_terminate_threads(unsigned int group_id, unsigned int terminate) |
2e1df07d | 242 | { |
41fa20ec | 243 | pid_t pid = getpid(); |
2e1df07d JA |
244 | |
245 | dprint(FD_PROCESS, "terminate group_id=%d\n", group_id); | |
246 | ||
da8f124f | 247 | for_each_td(td) { |
64402a8a HW |
248 | if ((terminate == TERMINATE_GROUP && group_id == TERMINATE_ALL) || |
249 | (terminate == TERMINATE_GROUP && group_id == td->groupid) || | |
250 | (terminate == TERMINATE_STONEWALL && td->runstate >= TD_RUNNING) || | |
251 | (terminate == TERMINATE_ALL)) { | |
2e1df07d JA |
252 | dprint(FD_PROCESS, "setting terminate on %s/%d\n", |
253 | td->o.name, (int) td->pid); | |
cba5460c JA |
254 | |
255 | if (td->terminate) | |
256 | continue; | |
257 | ||
ebea2133 | 258 | fio_mark_td_terminate(td); |
2e1df07d JA |
259 | td->o.start_delay = 0; |
260 | ||
261 | /* | |
262 | * if the thread is running, just let it exit | |
263 | */ | |
36d80bc7 | 264 | if (!td->pid || pid == td->pid) |
2e1df07d JA |
265 | continue; |
266 | else if (td->runstate < TD_RAMP) | |
267 | kill(td->pid, SIGTERM); | |
36d80bc7 | 268 | else { |
2e1df07d JA |
269 | struct ioengine_ops *ops = td->io_ops; |
270 | ||
36d80bc7 JA |
271 | if (ops && ops->terminate) |
272 | ops->terminate(td); | |
2e1df07d JA |
273 | } |
274 | } | |
da8f124f | 275 | } end_for_each(); |
2e1df07d JA |
276 | } |
277 | ||
046395d7 JA |
278 | int fio_running_or_pending_io_threads(void) |
279 | { | |
a691d82f | 280 | int nr_io_threads = 0; |
046395d7 | 281 | |
da8f124f | 282 | for_each_td(td) { |
356ef1a1 | 283 | if (td->io_ops_init && td_ioengine_flagged(td, FIO_NOIO)) |
046395d7 | 284 | continue; |
a691d82f | 285 | nr_io_threads++; |
046395d7 JA |
286 | if (td->runstate < TD_EXITED) |
287 | return 1; | |
da8f124f | 288 | } end_for_each(); |
046395d7 | 289 | |
a691d82f TK |
290 | if (!nr_io_threads) |
291 | return -1; /* we only had cpuio threads to begin with */ | |
046395d7 JA |
292 | return 0; |
293 | } | |
294 | ||
3a35845f | 295 | int fio_set_fd_nonblocking(int fd, const char *who) |
4a851614 JA |
296 | { |
297 | int flags; | |
298 | ||
299 | flags = fcntl(fd, F_GETFL); | |
300 | if (flags < 0) | |
301 | log_err("fio: %s failed to get file flags: %s\n", who, strerror(errno)); | |
302 | else { | |
3a35845f JA |
303 | int new_flags = flags | O_NONBLOCK; |
304 | ||
305 | new_flags = fcntl(fd, F_SETFL, new_flags); | |
306 | if (new_flags < 0) | |
4a851614 JA |
307 | log_err("fio: %s failed to get file flags: %s\n", who, strerror(errno)); |
308 | } | |
3a35845f JA |
309 | |
310 | return flags; | |
4a851614 JA |
311 | } |
312 | ||
1a50e7f0 TK |
313 | enum { |
314 | ENDIAN_INVALID_BE = 1, | |
315 | ENDIAN_INVALID_LE, | |
316 | ENDIAN_INVALID_CONFIG, | |
317 | ENDIAN_BROKEN, | |
318 | }; | |
319 | ||
a569b45f JA |
320 | static int endian_check(void) |
321 | { | |
322 | union { | |
323 | uint8_t c[8]; | |
324 | uint64_t v; | |
325 | } u; | |
326 | int le = 0, be = 0; | |
327 | ||
328 | u.v = 0x12; | |
329 | if (u.c[7] == 0x12) | |
330 | be = 1; | |
331 | else if (u.c[0] == 0x12) | |
332 | le = 1; | |
333 | ||
334 | #if defined(CONFIG_LITTLE_ENDIAN) | |
335 | if (be) | |
1a50e7f0 | 336 | return ENDIAN_INVALID_BE; |
a569b45f JA |
337 | #elif defined(CONFIG_BIG_ENDIAN) |
338 | if (le) | |
1a50e7f0 | 339 | return ENDIAN_INVALID_LE; |
a569b45f | 340 | #else |
1a50e7f0 | 341 | return ENDIAN_INVALID_CONFIG; |
a569b45f JA |
342 | #endif |
343 | ||
344 | if (!le && !be) | |
1a50e7f0 | 345 | return ENDIAN_BROKEN; |
a569b45f JA |
346 | |
347 | return 0; | |
348 | } | |
349 | ||
350 | int initialize_fio(char *envp[]) | |
351 | { | |
352 | long ps; | |
1a50e7f0 | 353 | int err; |
a569b45f | 354 | |
976a7756 JA |
355 | /* |
356 | * We need these to be properly 64-bit aligned, otherwise we | |
357 | * can run into problems on archs that fault on unaligned fp | |
358 | * access (ARM). | |
359 | */ | |
dbf285f7 | 360 | compiletime_assert((offsetof(struct thread_data, ts) % sizeof(void *)) == 0, "ts"); |
24ffb6f8 | 361 | compiletime_assert((offsetof(struct thread_stat, percentile_list) % 8) == 0, "stat percentile_list"); |
3d0ebb30 GG |
362 | compiletime_assert((offsetof(struct thread_stat, total_run_time) % 8) == 0, "total_run_time"); |
363 | compiletime_assert((offsetof(struct thread_stat, total_err_count) % 8) == 0, "total_err_count"); | |
24ffb6f8 | 364 | compiletime_assert((offsetof(struct thread_stat, latency_percentile) % 8) == 0, "stat latency_percentile"); |
dbf285f7 | 365 | compiletime_assert((offsetof(struct thread_data, ts.clat_stat) % 8) == 0, "ts.clat_stat"); |
24ffb6f8 JA |
366 | compiletime_assert((offsetof(struct thread_options_pack, zipf_theta) % 8) == 0, "zipf_theta"); |
367 | compiletime_assert((offsetof(struct thread_options_pack, pareto_h) % 8) == 0, "pareto_h"); | |
368 | compiletime_assert((offsetof(struct thread_options_pack, percentile_list) % 8) == 0, "percentile_list"); | |
b8c6b4de | 369 | compiletime_assert((offsetof(struct thread_options_pack, latency_percentile) % 8) == 0, "latency_percentile"); |
dbf285f7 | 370 | compiletime_assert((offsetof(struct jobs_eta, m_rate) % 8) == 0, "m_rate"); |
976a7756 | 371 | |
9c6f1e75 | 372 | compiletime_assert(__TD_F_LAST <= TD_ENG_FLAG_SHIFT, "TD_ENG_FLAG_SHIFT"); |
3154f1ed | 373 | compiletime_assert(BSSPLIT_MAX <= ZONESPLIT_MAX, "bsssplit/zone max"); |
9c6f1e75 | 374 | |
1a50e7f0 TK |
375 | err = endian_check(); |
376 | if (err) { | |
a569b45f | 377 | log_err("fio: endianness settings appear wrong.\n"); |
1a50e7f0 TK |
378 | switch (err) { |
379 | case ENDIAN_INVALID_BE: | |
380 | log_err("fio: got big-endian when configured for little\n"); | |
381 | break; | |
382 | case ENDIAN_INVALID_LE: | |
383 | log_err("fio: got little-endian when configured for big\n"); | |
384 | break; | |
385 | case ENDIAN_INVALID_CONFIG: | |
386 | log_err("fio: not configured to any endianness\n"); | |
387 | break; | |
388 | case ENDIAN_BROKEN: | |
389 | log_err("fio: failed to detect endianness\n"); | |
390 | break; | |
391 | default: | |
392 | assert(0); | |
393 | break; | |
394 | } | |
a569b45f JA |
395 | log_err("fio: please report this to fio@vger.kernel.org\n"); |
396 | return 1; | |
397 | } | |
398 | ||
399 | #if !defined(CONFIG_GETTIMEOFDAY) && !defined(CONFIG_CLOCK_GETTIME) | |
400 | #error "No available clock source!" | |
401 | #endif | |
402 | ||
403 | arch_init(envp); | |
404 | ||
405 | sinit(); | |
406 | ||
243bfe19 JA |
407 | if (fio_filelock_init()) { |
408 | log_err("fio: failed initializing filelock subsys\n"); | |
409 | return 1; | |
410 | } | |
411 | ||
d619275c JA |
412 | file_hash_init(); |
413 | ||
a569b45f JA |
414 | /* |
415 | * We need locale for number printing, if it isn't set then just | |
416 | * go with the US format. | |
417 | */ | |
418 | if (!getenv("LC_NUMERIC")) | |
419 | setlocale(LC_NUMERIC, "en_US"); | |
420 | ||
421 | ps = sysconf(_SC_PAGESIZE); | |
422 | if (ps < 0) { | |
423 | log_err("Failed to get page size\n"); | |
424 | return 1; | |
425 | } | |
426 | ||
427 | page_size = ps; | |
428 | page_mask = ps - 1; | |
2e1df07d | 429 | |
a569b45f JA |
430 | fio_keywords_init(); |
431 | return 0; | |
432 | } | |
af1dc266 JA |
433 | |
434 | void deinitialize_fio(void) | |
435 | { | |
436 | fio_keywords_exit(); | |
437 | } |