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