Add missing archs in fio_arch_strings[]
[fio.git] / libfio.c
CommitLineData
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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>
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26#include <sys/types.h>
27#include <signal.h>
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28#include <stdint.h>
29#include <locale.h>
4a851614 30#include <fcntl.h>
a569b45f 31
2e1df07d 32#include "fio.h"
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33#include "smalloc.h"
34#include "os/os.h"
243bfe19 35#include "filelock.h"
a39fb9ea 36#include "helper_thread.h"
2e1df07d 37
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38/*
39 * Just expose an empty list, if the OS does not support disk util stats
40 */
41#ifndef FIO_HAVE_DISK_UTIL
42FLIST_HEAD(disk_list);
43#endif
44
45unsigned long arch_flags = 0;
46
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47uintptr_t page_mask = 0;
48uintptr_t page_size = 0;
49
c6da2c34 50/* see os/os.h */
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51static 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",
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61 "Windows",
62 "Android",
239b2882 63 "DragonFly",
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64};
65
c6da2c34 66/* see arch/arch.h */
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67static 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",
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80 "mips",
81 "aarch64",
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82 "generic"
83};
84
ac28d905 85static void reset_io_counters(struct thread_data *td, int all)
2e1df07d 86{
6eaf09d6 87 int ddir;
bcd5abfa 88
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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;
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104
105 td->last_was_sync = 0;
bcd5abfa 106 td->rwmix_issues = 0;
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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)
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112 td->nr_done_files = 0;
113}
114
ac28d905 115void clear_io_state(struct thread_data *td, int all)
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116{
117 struct fio_file *f;
118 unsigned int i;
119
ac28d905 120 reset_io_counters(td, all);
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121
122 close_files(td);
ec803e97 123 for_each_file(td, f, i) {
2e1df07d 124 fio_file_clear_done(f);
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125 f->file_offset = get_start_offset(td, f);
126 }
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127
128 /*
1520f26e 129 * Re-Seed random number generator if rand_repeatable is true
2e1df07d 130 */
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131 if (td->o.rand_repeatable)
132 td_fill_rand_seeds(td);
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133}
134
135void reset_all_stats(struct thread_data *td)
136{
137 struct timeval tv;
138 int i;
139
ac28d905 140 reset_io_counters(td, 1);
2e1df07d 141
6eaf09d6 142 for (i = 0; i < DDIR_RWDIR_CNT; i++) {
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143 td->io_bytes[i] = 0;
144 td->io_blocks[i] = 0;
145 td->io_issues[i] = 0;
146 td->ts.total_io_u[i] = 0;
6eaf09d6 147 td->ts.runtime[i] = 0;
5b3faae6 148 td->rwmix_issues = 0;
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149 }
150
151 fio_gettime(&tv, NULL);
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152 memcpy(&td->epoch, &tv, sizeof(tv));
153 memcpy(&td->start, &tv, sizeof(tv));
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154 memcpy(&td->iops_sample_time, &tv, sizeof(tv));
155 memcpy(&td->bw_sample_time, &tv, sizeof(tv));
3e260a46 156
6bb58215 157 lat_target_reset(td);
210dd0fc 158 clear_rusage_stat(td);
a47591e4 159 helper_reset();
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160}
161
162void reset_fio_state(void)
163{
164 groupid = 0;
165 thread_number = 0;
2caefeec 166 stat_number = 0;
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167 done_secs = 0;
168}
169
170const 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
178const 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
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186static 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 201const char *runstate_to_name(int runstate)
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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
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210void td_set_runstate(struct thread_data *td, int runstate)
211{
212 if (td->runstate == runstate)
213 return;
214
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215 dprint(FD_PROCESS, "pid=%d: runstate %s -> %s\n", (int) td->pid,
216 runstate_to_name(td->runstate),
217 runstate_to_name(runstate));
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218 td->runstate = runstate;
219}
220
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221int 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
229void td_restore_runstate(struct thread_data *td, int old_state)
230{
231 td_set_runstate(td, old_state);
232}
233
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234void fio_mark_td_terminate(struct thread_data *td)
235{
236 fio_gettime(&td->terminate_time, NULL);
237 write_barrier();
238 td->terminate = 1;
239}
240
d883efbd 241void fio_terminate_threads(unsigned int group_id)
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242{
243 struct thread_data *td;
41fa20ec 244 pid_t pid = getpid();
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245 int i;
246
247 dprint(FD_PROCESS, "terminate group_id=%d\n", group_id);
248
249 for_each_td(td, i) {
d883efbd 250 if (group_id == TERMINATE_ALL || group_id == td->groupid) {
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251 dprint(FD_PROCESS, "setting terminate on %s/%d\n",
252 td->o.name, (int) td->pid);
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253
254 if (td->terminate)
255 continue;
256
ebea2133 257 fio_mark_td_terminate(td);
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258 td->o.start_delay = 0;
259
260 /*
261 * if the thread is running, just let it exit
262 */
36d80bc7 263 if (!td->pid || pid == td->pid)
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264 continue;
265 else if (td->runstate < TD_RAMP)
266 kill(td->pid, SIGTERM);
36d80bc7 267 else {
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268 struct ioengine_ops *ops = td->io_ops;
269
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270 if (ops && ops->terminate)
271 ops->terminate(td);
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272 }
273 }
274 }
275}
276
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277int fio_running_or_pending_io_threads(void)
278{
279 struct thread_data *td;
280 int i;
a691d82f 281 int nr_io_threads = 0;
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282
283 for_each_td(td, i) {
284 if (td->flags & TD_F_NOIO)
285 continue;
a691d82f 286 nr_io_threads++;
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287 if (td->runstate < TD_EXITED)
288 return 1;
289 }
290
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291 if (!nr_io_threads)
292 return -1; /* we only had cpuio threads to begin with */
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293 return 0;
294}
295
3a35845f 296int fio_set_fd_nonblocking(int fd, const char *who)
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297{
298 int flags;
299
300 flags = fcntl(fd, F_GETFL);
301 if (flags < 0)
302 log_err("fio: %s failed to get file flags: %s\n", who, strerror(errno));
303 else {
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304 int new_flags = flags | O_NONBLOCK;
305
306 new_flags = fcntl(fd, F_SETFL, new_flags);
307 if (new_flags < 0)
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308 log_err("fio: %s failed to get file flags: %s\n", who, strerror(errno));
309 }
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310
311 return flags;
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312}
313
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314static int endian_check(void)
315{
316 union {
317 uint8_t c[8];
318 uint64_t v;
319 } u;
320 int le = 0, be = 0;
321
322 u.v = 0x12;
323 if (u.c[7] == 0x12)
324 be = 1;
325 else if (u.c[0] == 0x12)
326 le = 1;
327
328#if defined(CONFIG_LITTLE_ENDIAN)
329 if (be)
330 return 1;
331#elif defined(CONFIG_BIG_ENDIAN)
332 if (le)
333 return 1;
334#else
335 return 1;
336#endif
337
338 if (!le && !be)
339 return 1;
340
341 return 0;
342}
343
344int initialize_fio(char *envp[])
345{
346 long ps;
347
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348 /*
349 * We need these to be properly 64-bit aligned, otherwise we
350 * can run into problems on archs that fault on unaligned fp
351 * access (ARM).
352 */
24ffb6f8 353 compiletime_assert((offsetof(struct thread_stat, percentile_list) % 8) == 0, "stat percentile_list");
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354 compiletime_assert((offsetof(struct thread_stat, total_run_time) % 8) == 0, "total_run_time");
355 compiletime_assert((offsetof(struct thread_stat, total_err_count) % 8) == 0, "total_err_count");
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356 compiletime_assert((offsetof(struct thread_stat, latency_percentile) % 8) == 0, "stat latency_percentile");
357 compiletime_assert((offsetof(struct thread_options_pack, zipf_theta) % 8) == 0, "zipf_theta");
358 compiletime_assert((offsetof(struct thread_options_pack, pareto_h) % 8) == 0, "pareto_h");
359 compiletime_assert((offsetof(struct thread_options_pack, percentile_list) % 8) == 0, "percentile_list");
b8c6b4de 360 compiletime_assert((offsetof(struct thread_options_pack, latency_percentile) % 8) == 0, "latency_percentile");
976a7756 361
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362 if (endian_check()) {
363 log_err("fio: endianness settings appear wrong.\n");
364 log_err("fio: please report this to fio@vger.kernel.org\n");
365 return 1;
366 }
367
368#if !defined(CONFIG_GETTIMEOFDAY) && !defined(CONFIG_CLOCK_GETTIME)
369#error "No available clock source!"
370#endif
371
372 arch_init(envp);
373
374 sinit();
375
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376 if (fio_filelock_init()) {
377 log_err("fio: failed initializing filelock subsys\n");
378 return 1;
379 }
380
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381 /*
382 * We need locale for number printing, if it isn't set then just
383 * go with the US format.
384 */
385 if (!getenv("LC_NUMERIC"))
386 setlocale(LC_NUMERIC, "en_US");
387
388 ps = sysconf(_SC_PAGESIZE);
389 if (ps < 0) {
390 log_err("Failed to get page size\n");
391 return 1;
392 }
393
394 page_size = ps;
395 page_mask = ps - 1;
2e1df07d 396
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397 fio_keywords_init();
398 return 0;
399}
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400
401void deinitialize_fio(void)
402{
403 fio_keywords_exit();
404}