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 | |
21 | * Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA | |
22 | * | |
23 | */ | |
24 | ||
25 | #include <string.h> | |
59dfce57 JA |
26 | #include <sys/types.h> |
27 | #include <signal.h> | |
a569b45f JA |
28 | #include <stdint.h> |
29 | #include <locale.h> | |
4a851614 | 30 | #include <fcntl.h> |
a569b45f | 31 | |
2e1df07d | 32 | #include "fio.h" |
a569b45f JA |
33 | #include "smalloc.h" |
34 | #include "os/os.h" | |
243bfe19 | 35 | #include "filelock.h" |
a39fb9ea | 36 | #include "helper_thread.h" |
2e1df07d | 37 | |
a3efc919 JA |
38 | /* |
39 | * Just expose an empty list, if the OS does not support disk util stats | |
40 | */ | |
41 | #ifndef FIO_HAVE_DISK_UTIL | |
42 | FLIST_HEAD(disk_list); | |
43 | #endif | |
44 | ||
45 | unsigned long arch_flags = 0; | |
46 | ||
a569b45f JA |
47 | uintptr_t page_mask = 0; |
48 | uintptr_t page_size = 0; | |
49 | ||
c6da2c34 | 50 | /* see os/os.h */ |
2e1df07d JA |
51 | static const char *fio_os_strings[os_nr] = { |
52 | "Invalid", | |
53 | "Linux", | |
54 | "AIX", | |
55 | "FreeBSD", | |
56 | "HP-UX", | |
57 | "OSX", | |
58 | "NetBSD", | |
1c7eaa7b | 59 | "OpenBSD", |
2e1df07d | 60 | "Solaris", |
1c7eaa7b JA |
61 | "Windows", |
62 | "Android", | |
239b2882 | 63 | "DragonFly", |
2e1df07d JA |
64 | }; |
65 | ||
c6da2c34 | 66 | /* see arch/arch.h */ |
2e1df07d JA |
67 | static const char *fio_arch_strings[arch_nr] = { |
68 | "Invalid", | |
69 | "x86-64", | |
70 | "x86", | |
71 | "ppc", | |
72 | "ia64", | |
73 | "s390", | |
74 | "alpha", | |
75 | "sparc", | |
76 | "sparc64", | |
77 | "arm", | |
78 | "sh", | |
79 | "hppa", | |
c6da2c34 TK |
80 | "mips", |
81 | "aarch64", | |
2e1df07d JA |
82 | "generic" |
83 | }; | |
84 | ||
ac28d905 | 85 | static void reset_io_counters(struct thread_data *td, int all) |
2e1df07d | 86 | { |
6eaf09d6 | 87 | int ddir; |
bcd5abfa | 88 | |
ac28d905 JA |
89 | if (all) { |
90 | for (ddir = 0; ddir < DDIR_RWDIR_CNT; ddir++) { | |
91 | td->stat_io_bytes[ddir] = 0; | |
92 | td->this_io_bytes[ddir] = 0; | |
93 | td->stat_io_blocks[ddir] = 0; | |
94 | td->this_io_blocks[ddir] = 0; | |
95 | td->rate_bytes[ddir] = 0; | |
96 | td->rate_blocks[ddir] = 0; | |
97 | td->bytes_done[ddir] = 0; | |
98 | td->rate_io_issue_bytes[ddir] = 0; | |
99 | td->rate_next_io_time[ddir] = 0; | |
100 | } | |
6eaf09d6 | 101 | } |
ac28d905 | 102 | |
2e1df07d | 103 | td->zone_bytes = 0; |
2e1df07d JA |
104 | |
105 | td->last_was_sync = 0; | |
bcd5abfa | 106 | td->rwmix_issues = 0; |
2e1df07d JA |
107 | |
108 | /* | |
109 | * reset file done count if we are to start over | |
110 | */ | |
44cbc6da | 111 | if (td->o.time_based || td->o.loops || td->o.do_verify) |
2e1df07d JA |
112 | td->nr_done_files = 0; |
113 | } | |
114 | ||
ac28d905 | 115 | void clear_io_state(struct thread_data *td, int all) |
2e1df07d JA |
116 | { |
117 | struct fio_file *f; | |
118 | unsigned int i; | |
119 | ||
ac28d905 | 120 | reset_io_counters(td, all); |
2e1df07d JA |
121 | |
122 | close_files(td); | |
ec803e97 | 123 | for_each_file(td, f, i) { |
2e1df07d | 124 | fio_file_clear_done(f); |
ec803e97 BF |
125 | f->file_offset = get_start_offset(td, f); |
126 | } | |
2e1df07d JA |
127 | |
128 | /* | |
1520f26e | 129 | * Re-Seed random number generator if rand_repeatable is true |
2e1df07d | 130 | */ |
1520f26e D |
131 | if (td->o.rand_repeatable) |
132 | td_fill_rand_seeds(td); | |
2e1df07d JA |
133 | } |
134 | ||
135 | void reset_all_stats(struct thread_data *td) | |
136 | { | |
2e1df07d JA |
137 | int i; |
138 | ||
ac28d905 | 139 | reset_io_counters(td, 1); |
2e1df07d | 140 | |
6eaf09d6 | 141 | for (i = 0; i < DDIR_RWDIR_CNT; i++) { |
2e1df07d JA |
142 | td->io_bytes[i] = 0; |
143 | td->io_blocks[i] = 0; | |
144 | td->io_issues[i] = 0; | |
145 | td->ts.total_io_u[i] = 0; | |
6eaf09d6 | 146 | td->ts.runtime[i] = 0; |
5b3faae6 | 147 | td->rwmix_issues = 0; |
2e1df07d JA |
148 | } |
149 | ||
3aea75b1 KC |
150 | set_epoch_time(td, td->o.log_unix_epoch); |
151 | memcpy(&td->start, &td->epoch, sizeof(struct timeval)); | |
152 | memcpy(&td->iops_sample_time, &td->epoch, sizeof(struct timeval)); | |
153 | memcpy(&td->bw_sample_time, &td->epoch, sizeof(struct timeval)); | |
3e260a46 | 154 | |
6bb58215 | 155 | lat_target_reset(td); |
210dd0fc | 156 | clear_rusage_stat(td); |
a47591e4 | 157 | helper_reset(); |
2e1df07d JA |
158 | } |
159 | ||
160 | void reset_fio_state(void) | |
161 | { | |
162 | groupid = 0; | |
163 | thread_number = 0; | |
2caefeec | 164 | stat_number = 0; |
2e1df07d JA |
165 | done_secs = 0; |
166 | } | |
167 | ||
168 | const char *fio_get_os_string(int nr) | |
169 | { | |
170 | if (nr < os_nr) | |
171 | return fio_os_strings[nr]; | |
172 | ||
173 | return NULL; | |
174 | } | |
175 | ||
176 | const char *fio_get_arch_string(int nr) | |
177 | { | |
178 | if (nr < arch_nr) | |
179 | return fio_arch_strings[nr]; | |
180 | ||
181 | return NULL; | |
182 | } | |
183 | ||
6e760cf3 JA |
184 | static const char *td_runstates[] = { |
185 | "NOT_CREATED", | |
186 | "CREATED", | |
187 | "INITIALIZED", | |
188 | "RAMP", | |
189 | "SETTING_UP", | |
190 | "RUNNING", | |
191 | "PRE_READING", | |
192 | "VERIFYING", | |
193 | "FSYNCING", | |
194 | "FINISHING", | |
195 | "EXITED", | |
196 | "REAPED", | |
197 | }; | |
198 | ||
9cc8cb91 | 199 | const char *runstate_to_name(int runstate) |
6e760cf3 JA |
200 | { |
201 | compiletime_assert(TD_LAST == 12, "td runstate list"); | |
202 | if (runstate >= 0 && runstate < TD_LAST) | |
203 | return td_runstates[runstate]; | |
204 | ||
205 | return "invalid"; | |
206 | } | |
207 | ||
2e1df07d JA |
208 | void td_set_runstate(struct thread_data *td, int runstate) |
209 | { | |
210 | if (td->runstate == runstate) | |
211 | return; | |
212 | ||
6e760cf3 JA |
213 | dprint(FD_PROCESS, "pid=%d: runstate %s -> %s\n", (int) td->pid, |
214 | runstate_to_name(td->runstate), | |
215 | runstate_to_name(runstate)); | |
2e1df07d JA |
216 | td->runstate = runstate; |
217 | } | |
218 | ||
8edd973d JA |
219 | int td_bump_runstate(struct thread_data *td, int new_state) |
220 | { | |
221 | int old_state = td->runstate; | |
222 | ||
223 | td_set_runstate(td, new_state); | |
224 | return old_state; | |
225 | } | |
226 | ||
227 | void td_restore_runstate(struct thread_data *td, int old_state) | |
228 | { | |
229 | td_set_runstate(td, old_state); | |
230 | } | |
231 | ||
ebea2133 JA |
232 | void fio_mark_td_terminate(struct thread_data *td) |
233 | { | |
234 | fio_gettime(&td->terminate_time, NULL); | |
235 | write_barrier(); | |
236 | td->terminate = 1; | |
237 | } | |
238 | ||
d883efbd | 239 | void fio_terminate_threads(unsigned int group_id) |
2e1df07d JA |
240 | { |
241 | struct thread_data *td; | |
41fa20ec | 242 | pid_t pid = getpid(); |
2e1df07d JA |
243 | int i; |
244 | ||
245 | dprint(FD_PROCESS, "terminate group_id=%d\n", group_id); | |
246 | ||
247 | for_each_td(td, i) { | |
d883efbd | 248 | if (group_id == TERMINATE_ALL || group_id == td->groupid) { |
2e1df07d JA |
249 | dprint(FD_PROCESS, "setting terminate on %s/%d\n", |
250 | td->o.name, (int) td->pid); | |
cba5460c JA |
251 | |
252 | if (td->terminate) | |
253 | continue; | |
254 | ||
ebea2133 | 255 | fio_mark_td_terminate(td); |
2e1df07d JA |
256 | td->o.start_delay = 0; |
257 | ||
258 | /* | |
259 | * if the thread is running, just let it exit | |
260 | */ | |
36d80bc7 | 261 | if (!td->pid || pid == td->pid) |
2e1df07d JA |
262 | continue; |
263 | else if (td->runstate < TD_RAMP) | |
264 | kill(td->pid, SIGTERM); | |
36d80bc7 | 265 | else { |
2e1df07d JA |
266 | struct ioengine_ops *ops = td->io_ops; |
267 | ||
36d80bc7 JA |
268 | if (ops && ops->terminate) |
269 | ops->terminate(td); | |
2e1df07d JA |
270 | } |
271 | } | |
272 | } | |
273 | } | |
274 | ||
046395d7 JA |
275 | int fio_running_or_pending_io_threads(void) |
276 | { | |
277 | struct thread_data *td; | |
278 | int i; | |
a691d82f | 279 | int nr_io_threads = 0; |
046395d7 JA |
280 | |
281 | for_each_td(td, i) { | |
282 | if (td->flags & TD_F_NOIO) | |
283 | continue; | |
a691d82f | 284 | nr_io_threads++; |
046395d7 JA |
285 | if (td->runstate < TD_EXITED) |
286 | return 1; | |
287 | } | |
288 | ||
a691d82f TK |
289 | if (!nr_io_threads) |
290 | return -1; /* we only had cpuio threads to begin with */ | |
046395d7 JA |
291 | return 0; |
292 | } | |
293 | ||
3a35845f | 294 | int fio_set_fd_nonblocking(int fd, const char *who) |
4a851614 JA |
295 | { |
296 | int flags; | |
297 | ||
298 | flags = fcntl(fd, F_GETFL); | |
299 | if (flags < 0) | |
300 | log_err("fio: %s failed to get file flags: %s\n", who, strerror(errno)); | |
301 | else { | |
3a35845f JA |
302 | int new_flags = flags | O_NONBLOCK; |
303 | ||
304 | new_flags = fcntl(fd, F_SETFL, new_flags); | |
305 | if (new_flags < 0) | |
4a851614 JA |
306 | log_err("fio: %s failed to get file flags: %s\n", who, strerror(errno)); |
307 | } | |
3a35845f JA |
308 | |
309 | return flags; | |
4a851614 JA |
310 | } |
311 | ||
a569b45f JA |
312 | static int endian_check(void) |
313 | { | |
314 | union { | |
315 | uint8_t c[8]; | |
316 | uint64_t v; | |
317 | } u; | |
318 | int le = 0, be = 0; | |
319 | ||
320 | u.v = 0x12; | |
321 | if (u.c[7] == 0x12) | |
322 | be = 1; | |
323 | else if (u.c[0] == 0x12) | |
324 | le = 1; | |
325 | ||
326 | #if defined(CONFIG_LITTLE_ENDIAN) | |
327 | if (be) | |
328 | return 1; | |
329 | #elif defined(CONFIG_BIG_ENDIAN) | |
330 | if (le) | |
331 | return 1; | |
332 | #else | |
333 | return 1; | |
334 | #endif | |
335 | ||
336 | if (!le && !be) | |
337 | return 1; | |
338 | ||
339 | return 0; | |
340 | } | |
341 | ||
342 | int initialize_fio(char *envp[]) | |
343 | { | |
344 | long ps; | |
345 | ||
976a7756 JA |
346 | /* |
347 | * We need these to be properly 64-bit aligned, otherwise we | |
348 | * can run into problems on archs that fault on unaligned fp | |
349 | * access (ARM). | |
350 | */ | |
24ffb6f8 | 351 | compiletime_assert((offsetof(struct thread_stat, percentile_list) % 8) == 0, "stat percentile_list"); |
3d0ebb30 GG |
352 | compiletime_assert((offsetof(struct thread_stat, total_run_time) % 8) == 0, "total_run_time"); |
353 | compiletime_assert((offsetof(struct thread_stat, total_err_count) % 8) == 0, "total_err_count"); | |
24ffb6f8 JA |
354 | compiletime_assert((offsetof(struct thread_stat, latency_percentile) % 8) == 0, "stat latency_percentile"); |
355 | compiletime_assert((offsetof(struct thread_options_pack, zipf_theta) % 8) == 0, "zipf_theta"); | |
356 | compiletime_assert((offsetof(struct thread_options_pack, pareto_h) % 8) == 0, "pareto_h"); | |
357 | compiletime_assert((offsetof(struct thread_options_pack, percentile_list) % 8) == 0, "percentile_list"); | |
b8c6b4de | 358 | compiletime_assert((offsetof(struct thread_options_pack, latency_percentile) % 8) == 0, "latency_percentile"); |
976a7756 | 359 | |
a569b45f JA |
360 | if (endian_check()) { |
361 | log_err("fio: endianness settings appear wrong.\n"); | |
362 | log_err("fio: please report this to fio@vger.kernel.org\n"); | |
363 | return 1; | |
364 | } | |
365 | ||
366 | #if !defined(CONFIG_GETTIMEOFDAY) && !defined(CONFIG_CLOCK_GETTIME) | |
367 | #error "No available clock source!" | |
368 | #endif | |
369 | ||
370 | arch_init(envp); | |
371 | ||
372 | sinit(); | |
373 | ||
243bfe19 JA |
374 | if (fio_filelock_init()) { |
375 | log_err("fio: failed initializing filelock subsys\n"); | |
376 | return 1; | |
377 | } | |
378 | ||
a569b45f JA |
379 | /* |
380 | * We need locale for number printing, if it isn't set then just | |
381 | * go with the US format. | |
382 | */ | |
383 | if (!getenv("LC_NUMERIC")) | |
384 | setlocale(LC_NUMERIC, "en_US"); | |
385 | ||
386 | ps = sysconf(_SC_PAGESIZE); | |
387 | if (ps < 0) { | |
388 | log_err("Failed to get page size\n"); | |
389 | return 1; | |
390 | } | |
391 | ||
392 | page_size = ps; | |
393 | page_mask = ps - 1; | |
2e1df07d | 394 | |
a569b45f JA |
395 | fio_keywords_init(); |
396 | return 0; | |
397 | } | |
af1dc266 JA |
398 | |
399 | void deinitialize_fio(void) | |
400 | { | |
401 | fio_keywords_exit(); | |
402 | } |