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" |
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); |
2e1df07d JA |
151 | } |
152 | ||
153 | void reset_fio_state(void) | |
154 | { | |
155 | groupid = 0; | |
156 | thread_number = 0; | |
2caefeec | 157 | stat_number = 0; |
2e1df07d JA |
158 | done_secs = 0; |
159 | } | |
160 | ||
161 | const char *fio_get_os_string(int nr) | |
162 | { | |
163 | if (nr < os_nr) | |
164 | return fio_os_strings[nr]; | |
165 | ||
166 | return NULL; | |
167 | } | |
168 | ||
169 | const char *fio_get_arch_string(int nr) | |
170 | { | |
171 | if (nr < arch_nr) | |
172 | return fio_arch_strings[nr]; | |
173 | ||
174 | return NULL; | |
175 | } | |
176 | ||
6e760cf3 JA |
177 | static const char *td_runstates[] = { |
178 | "NOT_CREATED", | |
179 | "CREATED", | |
180 | "INITIALIZED", | |
181 | "RAMP", | |
182 | "SETTING_UP", | |
183 | "RUNNING", | |
184 | "PRE_READING", | |
185 | "VERIFYING", | |
186 | "FSYNCING", | |
187 | "FINISHING", | |
188 | "EXITED", | |
189 | "REAPED", | |
190 | }; | |
191 | ||
192 | static const char *runstate_to_name(int runstate) | |
193 | { | |
194 | compiletime_assert(TD_LAST == 12, "td runstate list"); | |
195 | if (runstate >= 0 && runstate < TD_LAST) | |
196 | return td_runstates[runstate]; | |
197 | ||
198 | return "invalid"; | |
199 | } | |
200 | ||
2e1df07d JA |
201 | void td_set_runstate(struct thread_data *td, int runstate) |
202 | { | |
203 | if (td->runstate == runstate) | |
204 | return; | |
205 | ||
6e760cf3 JA |
206 | dprint(FD_PROCESS, "pid=%d: runstate %s -> %s\n", (int) td->pid, |
207 | runstate_to_name(td->runstate), | |
208 | runstate_to_name(runstate)); | |
2e1df07d JA |
209 | td->runstate = runstate; |
210 | } | |
211 | ||
8edd973d JA |
212 | int td_bump_runstate(struct thread_data *td, int new_state) |
213 | { | |
214 | int old_state = td->runstate; | |
215 | ||
216 | td_set_runstate(td, new_state); | |
217 | return old_state; | |
218 | } | |
219 | ||
220 | void td_restore_runstate(struct thread_data *td, int old_state) | |
221 | { | |
222 | td_set_runstate(td, old_state); | |
223 | } | |
224 | ||
ebea2133 JA |
225 | void fio_mark_td_terminate(struct thread_data *td) |
226 | { | |
227 | fio_gettime(&td->terminate_time, NULL); | |
228 | write_barrier(); | |
229 | td->terminate = 1; | |
230 | } | |
231 | ||
2e1df07d JA |
232 | void fio_terminate_threads(int group_id) |
233 | { | |
234 | struct thread_data *td; | |
41fa20ec | 235 | pid_t pid = getpid(); |
2e1df07d JA |
236 | int i; |
237 | ||
238 | dprint(FD_PROCESS, "terminate group_id=%d\n", group_id); | |
239 | ||
240 | for_each_td(td, i) { | |
241 | if (group_id == TERMINATE_ALL || groupid == td->groupid) { | |
242 | dprint(FD_PROCESS, "setting terminate on %s/%d\n", | |
243 | td->o.name, (int) td->pid); | |
cba5460c JA |
244 | |
245 | if (td->terminate) | |
246 | continue; | |
247 | ||
ebea2133 | 248 | fio_mark_td_terminate(td); |
2e1df07d JA |
249 | td->o.start_delay = 0; |
250 | ||
251 | /* | |
252 | * if the thread is running, just let it exit | |
253 | */ | |
36d80bc7 | 254 | if (!td->pid || pid == td->pid) |
2e1df07d JA |
255 | continue; |
256 | else if (td->runstate < TD_RAMP) | |
257 | kill(td->pid, SIGTERM); | |
36d80bc7 | 258 | else { |
2e1df07d JA |
259 | struct ioengine_ops *ops = td->io_ops; |
260 | ||
36d80bc7 JA |
261 | if (ops && ops->terminate) |
262 | ops->terminate(td); | |
2e1df07d JA |
263 | } |
264 | } | |
265 | } | |
266 | } | |
267 | ||
046395d7 JA |
268 | int fio_running_or_pending_io_threads(void) |
269 | { | |
270 | struct thread_data *td; | |
271 | int i; | |
272 | ||
273 | for_each_td(td, i) { | |
274 | if (td->flags & TD_F_NOIO) | |
275 | continue; | |
276 | if (td->runstate < TD_EXITED) | |
277 | return 1; | |
278 | } | |
279 | ||
280 | return 0; | |
281 | } | |
282 | ||
3a35845f | 283 | int fio_set_fd_nonblocking(int fd, const char *who) |
4a851614 JA |
284 | { |
285 | int flags; | |
286 | ||
287 | flags = fcntl(fd, F_GETFL); | |
288 | if (flags < 0) | |
289 | log_err("fio: %s failed to get file flags: %s\n", who, strerror(errno)); | |
290 | else { | |
3a35845f JA |
291 | int new_flags = flags | O_NONBLOCK; |
292 | ||
293 | new_flags = fcntl(fd, F_SETFL, new_flags); | |
294 | if (new_flags < 0) | |
4a851614 JA |
295 | log_err("fio: %s failed to get file flags: %s\n", who, strerror(errno)); |
296 | } | |
3a35845f JA |
297 | |
298 | return flags; | |
4a851614 JA |
299 | } |
300 | ||
a569b45f JA |
301 | static int endian_check(void) |
302 | { | |
303 | union { | |
304 | uint8_t c[8]; | |
305 | uint64_t v; | |
306 | } u; | |
307 | int le = 0, be = 0; | |
308 | ||
309 | u.v = 0x12; | |
310 | if (u.c[7] == 0x12) | |
311 | be = 1; | |
312 | else if (u.c[0] == 0x12) | |
313 | le = 1; | |
314 | ||
315 | #if defined(CONFIG_LITTLE_ENDIAN) | |
316 | if (be) | |
317 | return 1; | |
318 | #elif defined(CONFIG_BIG_ENDIAN) | |
319 | if (le) | |
320 | return 1; | |
321 | #else | |
322 | return 1; | |
323 | #endif | |
324 | ||
325 | if (!le && !be) | |
326 | return 1; | |
327 | ||
328 | return 0; | |
329 | } | |
330 | ||
331 | int initialize_fio(char *envp[]) | |
332 | { | |
333 | long ps; | |
334 | ||
976a7756 JA |
335 | /* |
336 | * We need these to be properly 64-bit aligned, otherwise we | |
337 | * can run into problems on archs that fault on unaligned fp | |
338 | * access (ARM). | |
339 | */ | |
24ffb6f8 | 340 | compiletime_assert((offsetof(struct thread_stat, percentile_list) % 8) == 0, "stat percentile_list"); |
3d0ebb30 GG |
341 | compiletime_assert((offsetof(struct thread_stat, total_run_time) % 8) == 0, "total_run_time"); |
342 | compiletime_assert((offsetof(struct thread_stat, total_err_count) % 8) == 0, "total_err_count"); | |
24ffb6f8 JA |
343 | compiletime_assert((offsetof(struct thread_stat, latency_percentile) % 8) == 0, "stat latency_percentile"); |
344 | compiletime_assert((offsetof(struct thread_options_pack, zipf_theta) % 8) == 0, "zipf_theta"); | |
345 | compiletime_assert((offsetof(struct thread_options_pack, pareto_h) % 8) == 0, "pareto_h"); | |
346 | compiletime_assert((offsetof(struct thread_options_pack, percentile_list) % 8) == 0, "percentile_list"); | |
b8c6b4de | 347 | compiletime_assert((offsetof(struct thread_options_pack, latency_percentile) % 8) == 0, "latency_percentile"); |
976a7756 | 348 | |
a569b45f JA |
349 | if (endian_check()) { |
350 | log_err("fio: endianness settings appear wrong.\n"); | |
351 | log_err("fio: please report this to fio@vger.kernel.org\n"); | |
352 | return 1; | |
353 | } | |
354 | ||
355 | #if !defined(CONFIG_GETTIMEOFDAY) && !defined(CONFIG_CLOCK_GETTIME) | |
356 | #error "No available clock source!" | |
357 | #endif | |
358 | ||
359 | arch_init(envp); | |
360 | ||
361 | sinit(); | |
362 | ||
243bfe19 JA |
363 | if (fio_filelock_init()) { |
364 | log_err("fio: failed initializing filelock subsys\n"); | |
365 | return 1; | |
366 | } | |
367 | ||
a569b45f JA |
368 | /* |
369 | * We need locale for number printing, if it isn't set then just | |
370 | * go with the US format. | |
371 | */ | |
372 | if (!getenv("LC_NUMERIC")) | |
373 | setlocale(LC_NUMERIC, "en_US"); | |
374 | ||
375 | ps = sysconf(_SC_PAGESIZE); | |
376 | if (ps < 0) { | |
377 | log_err("Failed to get page size\n"); | |
378 | return 1; | |
379 | } | |
380 | ||
381 | page_size = ps; | |
382 | page_mask = ps - 1; | |
2e1df07d | 383 | |
a569b45f JA |
384 | fio_keywords_init(); |
385 | return 0; | |
386 | } | |
af1dc266 JA |
387 | |
388 | void deinitialize_fio(void) | |
389 | { | |
390 | fio_keywords_exit(); | |
391 | } |