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 | ||
80 | static void reset_io_counters(struct thread_data *td) | |
81 | { | |
6eaf09d6 | 82 | int ddir; |
bcd5abfa | 83 | |
6eaf09d6 SL |
84 | for (ddir = 0; ddir < DDIR_RWDIR_CNT; ddir++) { |
85 | td->stat_io_bytes[ddir] = 0; | |
86 | td->this_io_bytes[ddir] = 0; | |
87 | td->stat_io_blocks[ddir] = 0; | |
88 | td->this_io_blocks[ddir] = 0; | |
89 | td->rate_bytes[ddir] = 0; | |
90 | td->rate_blocks[ddir] = 0; | |
91 | } | |
2e1df07d | 92 | td->zone_bytes = 0; |
2e1df07d JA |
93 | |
94 | td->last_was_sync = 0; | |
bcd5abfa | 95 | td->rwmix_issues = 0; |
2e1df07d JA |
96 | |
97 | /* | |
98 | * reset file done count if we are to start over | |
99 | */ | |
44cbc6da | 100 | if (td->o.time_based || td->o.loops || td->o.do_verify) |
2e1df07d JA |
101 | td->nr_done_files = 0; |
102 | } | |
103 | ||
104 | void clear_io_state(struct thread_data *td) | |
105 | { | |
106 | struct fio_file *f; | |
107 | unsigned int i; | |
108 | ||
109 | reset_io_counters(td); | |
110 | ||
111 | close_files(td); | |
ec803e97 | 112 | for_each_file(td, f, i) { |
2e1df07d | 113 | fio_file_clear_done(f); |
ec803e97 BF |
114 | f->file_offset = get_start_offset(td, f); |
115 | } | |
2e1df07d JA |
116 | |
117 | /* | |
118 | * Set the same seed to get repeatable runs | |
119 | */ | |
120 | td_fill_rand_seeds(td); | |
121 | } | |
122 | ||
123 | void reset_all_stats(struct thread_data *td) | |
124 | { | |
125 | struct timeval tv; | |
126 | int i; | |
127 | ||
128 | reset_io_counters(td); | |
129 | ||
6eaf09d6 | 130 | for (i = 0; i < DDIR_RWDIR_CNT; i++) { |
2e1df07d JA |
131 | td->io_bytes[i] = 0; |
132 | td->io_blocks[i] = 0; | |
133 | td->io_issues[i] = 0; | |
134 | td->ts.total_io_u[i] = 0; | |
6eaf09d6 | 135 | td->ts.runtime[i] = 0; |
5b3faae6 | 136 | td->rwmix_issues = 0; |
2e1df07d JA |
137 | } |
138 | ||
139 | fio_gettime(&tv, NULL); | |
2e1df07d JA |
140 | memcpy(&td->epoch, &tv, sizeof(tv)); |
141 | memcpy(&td->start, &tv, sizeof(tv)); | |
3e260a46 | 142 | |
6bb58215 | 143 | lat_target_reset(td); |
2e1df07d JA |
144 | } |
145 | ||
146 | void reset_fio_state(void) | |
147 | { | |
148 | groupid = 0; | |
149 | thread_number = 0; | |
2caefeec | 150 | stat_number = 0; |
2e1df07d JA |
151 | done_secs = 0; |
152 | } | |
153 | ||
154 | const char *fio_get_os_string(int nr) | |
155 | { | |
156 | if (nr < os_nr) | |
157 | return fio_os_strings[nr]; | |
158 | ||
159 | return NULL; | |
160 | } | |
161 | ||
162 | const char *fio_get_arch_string(int nr) | |
163 | { | |
164 | if (nr < arch_nr) | |
165 | return fio_arch_strings[nr]; | |
166 | ||
167 | return NULL; | |
168 | } | |
169 | ||
170 | void td_set_runstate(struct thread_data *td, int runstate) | |
171 | { | |
172 | if (td->runstate == runstate) | |
173 | return; | |
174 | ||
175 | dprint(FD_PROCESS, "pid=%d: runstate %d -> %d\n", (int) td->pid, | |
176 | td->runstate, runstate); | |
177 | td->runstate = runstate; | |
178 | } | |
179 | ||
8edd973d JA |
180 | int td_bump_runstate(struct thread_data *td, int new_state) |
181 | { | |
182 | int old_state = td->runstate; | |
183 | ||
184 | td_set_runstate(td, new_state); | |
185 | return old_state; | |
186 | } | |
187 | ||
188 | void td_restore_runstate(struct thread_data *td, int old_state) | |
189 | { | |
190 | td_set_runstate(td, old_state); | |
191 | } | |
192 | ||
ebea2133 JA |
193 | void fio_mark_td_terminate(struct thread_data *td) |
194 | { | |
195 | fio_gettime(&td->terminate_time, NULL); | |
196 | write_barrier(); | |
197 | td->terminate = 1; | |
198 | } | |
199 | ||
2e1df07d JA |
200 | void fio_terminate_threads(int group_id) |
201 | { | |
202 | struct thread_data *td; | |
41fa20ec | 203 | pid_t pid = getpid(); |
2e1df07d JA |
204 | int i; |
205 | ||
206 | dprint(FD_PROCESS, "terminate group_id=%d\n", group_id); | |
207 | ||
208 | for_each_td(td, i) { | |
209 | if (group_id == TERMINATE_ALL || groupid == td->groupid) { | |
210 | dprint(FD_PROCESS, "setting terminate on %s/%d\n", | |
211 | td->o.name, (int) td->pid); | |
cba5460c JA |
212 | |
213 | if (td->terminate) | |
214 | continue; | |
215 | ||
ebea2133 | 216 | fio_mark_td_terminate(td); |
2e1df07d JA |
217 | td->o.start_delay = 0; |
218 | ||
219 | /* | |
220 | * if the thread is running, just let it exit | |
221 | */ | |
36d80bc7 | 222 | if (!td->pid || pid == td->pid) |
2e1df07d JA |
223 | continue; |
224 | else if (td->runstate < TD_RAMP) | |
225 | kill(td->pid, SIGTERM); | |
36d80bc7 | 226 | else { |
2e1df07d JA |
227 | struct ioengine_ops *ops = td->io_ops; |
228 | ||
36d80bc7 JA |
229 | if (ops && ops->terminate) |
230 | ops->terminate(td); | |
2e1df07d JA |
231 | } |
232 | } | |
233 | } | |
234 | } | |
235 | ||
046395d7 JA |
236 | int fio_running_or_pending_io_threads(void) |
237 | { | |
238 | struct thread_data *td; | |
239 | int i; | |
240 | ||
241 | for_each_td(td, i) { | |
242 | if (td->flags & TD_F_NOIO) | |
243 | continue; | |
244 | if (td->runstate < TD_EXITED) | |
245 | return 1; | |
246 | } | |
247 | ||
248 | return 0; | |
249 | } | |
250 | ||
3a35845f | 251 | int fio_set_fd_nonblocking(int fd, const char *who) |
4a851614 JA |
252 | { |
253 | int flags; | |
254 | ||
255 | flags = fcntl(fd, F_GETFL); | |
256 | if (flags < 0) | |
257 | log_err("fio: %s failed to get file flags: %s\n", who, strerror(errno)); | |
258 | else { | |
3a35845f JA |
259 | int new_flags = flags | O_NONBLOCK; |
260 | ||
261 | new_flags = fcntl(fd, F_SETFL, new_flags); | |
262 | if (new_flags < 0) | |
4a851614 JA |
263 | log_err("fio: %s failed to get file flags: %s\n", who, strerror(errno)); |
264 | } | |
3a35845f JA |
265 | |
266 | return flags; | |
4a851614 JA |
267 | } |
268 | ||
a569b45f JA |
269 | static int endian_check(void) |
270 | { | |
271 | union { | |
272 | uint8_t c[8]; | |
273 | uint64_t v; | |
274 | } u; | |
275 | int le = 0, be = 0; | |
276 | ||
277 | u.v = 0x12; | |
278 | if (u.c[7] == 0x12) | |
279 | be = 1; | |
280 | else if (u.c[0] == 0x12) | |
281 | le = 1; | |
282 | ||
283 | #if defined(CONFIG_LITTLE_ENDIAN) | |
284 | if (be) | |
285 | return 1; | |
286 | #elif defined(CONFIG_BIG_ENDIAN) | |
287 | if (le) | |
288 | return 1; | |
289 | #else | |
290 | return 1; | |
291 | #endif | |
292 | ||
293 | if (!le && !be) | |
294 | return 1; | |
295 | ||
296 | return 0; | |
297 | } | |
298 | ||
299 | int initialize_fio(char *envp[]) | |
300 | { | |
301 | long ps; | |
302 | ||
976a7756 JA |
303 | /* |
304 | * We need these to be properly 64-bit aligned, otherwise we | |
305 | * can run into problems on archs that fault on unaligned fp | |
306 | * access (ARM). | |
307 | */ | |
24ffb6f8 | 308 | compiletime_assert((offsetof(struct thread_stat, percentile_list) % 8) == 0, "stat percentile_list"); |
3d0ebb30 GG |
309 | compiletime_assert((offsetof(struct thread_stat, total_run_time) % 8) == 0, "total_run_time"); |
310 | compiletime_assert((offsetof(struct thread_stat, total_err_count) % 8) == 0, "total_err_count"); | |
24ffb6f8 JA |
311 | compiletime_assert((offsetof(struct thread_stat, latency_percentile) % 8) == 0, "stat latency_percentile"); |
312 | compiletime_assert((offsetof(struct thread_options_pack, zipf_theta) % 8) == 0, "zipf_theta"); | |
313 | compiletime_assert((offsetof(struct thread_options_pack, pareto_h) % 8) == 0, "pareto_h"); | |
314 | compiletime_assert((offsetof(struct thread_options_pack, percentile_list) % 8) == 0, "percentile_list"); | |
b8c6b4de | 315 | compiletime_assert((offsetof(struct thread_options_pack, latency_percentile) % 8) == 0, "latency_percentile"); |
976a7756 | 316 | |
a569b45f JA |
317 | if (endian_check()) { |
318 | log_err("fio: endianness settings appear wrong.\n"); | |
319 | log_err("fio: please report this to fio@vger.kernel.org\n"); | |
320 | return 1; | |
321 | } | |
322 | ||
323 | #if !defined(CONFIG_GETTIMEOFDAY) && !defined(CONFIG_CLOCK_GETTIME) | |
324 | #error "No available clock source!" | |
325 | #endif | |
326 | ||
327 | arch_init(envp); | |
328 | ||
329 | sinit(); | |
330 | ||
243bfe19 JA |
331 | if (fio_filelock_init()) { |
332 | log_err("fio: failed initializing filelock subsys\n"); | |
333 | return 1; | |
334 | } | |
335 | ||
a569b45f JA |
336 | /* |
337 | * We need locale for number printing, if it isn't set then just | |
338 | * go with the US format. | |
339 | */ | |
340 | if (!getenv("LC_NUMERIC")) | |
341 | setlocale(LC_NUMERIC, "en_US"); | |
342 | ||
343 | ps = sysconf(_SC_PAGESIZE); | |
344 | if (ps < 0) { | |
345 | log_err("Failed to get page size\n"); | |
346 | return 1; | |
347 | } | |
348 | ||
349 | page_size = ps; | |
350 | page_mask = ps - 1; | |
2e1df07d | 351 | |
a569b45f JA |
352 | fio_keywords_init(); |
353 | return 0; | |
354 | } |