Add ->bytes_done[] to struct thread_data
[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"
2e1df07d 36
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37/*
38 * Just expose an empty list, if the OS does not support disk util stats
39 */
40#ifndef FIO_HAVE_DISK_UTIL
41FLIST_HEAD(disk_list);
42#endif
43
44unsigned long arch_flags = 0;
45
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46uintptr_t page_mask = 0;
47uintptr_t page_size = 0;
48
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49static 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",
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59 "Windows",
60 "Android",
239b2882 61 "DragonFly",
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62};
63
64static 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
80static void reset_io_counters(struct thread_data *td)
81{
6eaf09d6 82 int ddir;
bcd5abfa 83
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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;
55312f9f 91 td->bytes_done[ddir] = 0;
6eaf09d6 92 }
2e1df07d 93 td->zone_bytes = 0;
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94
95 td->last_was_sync = 0;
bcd5abfa 96 td->rwmix_issues = 0;
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97
98 /*
99 * reset file done count if we are to start over
100 */
44cbc6da 101 if (td->o.time_based || td->o.loops || td->o.do_verify)
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102 td->nr_done_files = 0;
103}
104
105void clear_io_state(struct thread_data *td)
106{
107 struct fio_file *f;
108 unsigned int i;
109
110 reset_io_counters(td);
111
112 close_files(td);
ec803e97 113 for_each_file(td, f, i) {
2e1df07d 114 fio_file_clear_done(f);
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115 f->file_offset = get_start_offset(td, f);
116 }
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117
118 /*
119 * Set the same seed to get repeatable runs
120 */
121 td_fill_rand_seeds(td);
122}
123
124void reset_all_stats(struct thread_data *td)
125{
126 struct timeval tv;
127 int i;
128
129 reset_io_counters(td);
130
6eaf09d6 131 for (i = 0; i < DDIR_RWDIR_CNT; i++) {
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132 td->io_bytes[i] = 0;
133 td->io_blocks[i] = 0;
134 td->io_issues[i] = 0;
135 td->ts.total_io_u[i] = 0;
6eaf09d6 136 td->ts.runtime[i] = 0;
5b3faae6 137 td->rwmix_issues = 0;
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138 }
139
140 fio_gettime(&tv, NULL);
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141 memcpy(&td->epoch, &tv, sizeof(tv));
142 memcpy(&td->start, &tv, sizeof(tv));
3e260a46 143
6bb58215 144 lat_target_reset(td);
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145}
146
147void reset_fio_state(void)
148{
149 groupid = 0;
150 thread_number = 0;
2caefeec 151 stat_number = 0;
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152 done_secs = 0;
153}
154
155const char *fio_get_os_string(int nr)
156{
157 if (nr < os_nr)
158 return fio_os_strings[nr];
159
160 return NULL;
161}
162
163const char *fio_get_arch_string(int nr)
164{
165 if (nr < arch_nr)
166 return fio_arch_strings[nr];
167
168 return NULL;
169}
170
171void td_set_runstate(struct thread_data *td, int runstate)
172{
173 if (td->runstate == runstate)
174 return;
175
176 dprint(FD_PROCESS, "pid=%d: runstate %d -> %d\n", (int) td->pid,
177 td->runstate, runstate);
178 td->runstate = runstate;
179}
180
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181int td_bump_runstate(struct thread_data *td, int new_state)
182{
183 int old_state = td->runstate;
184
185 td_set_runstate(td, new_state);
186 return old_state;
187}
188
189void td_restore_runstate(struct thread_data *td, int old_state)
190{
191 td_set_runstate(td, old_state);
192}
193
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194void fio_mark_td_terminate(struct thread_data *td)
195{
196 fio_gettime(&td->terminate_time, NULL);
197 write_barrier();
198 td->terminate = 1;
199}
200
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201void fio_terminate_threads(int group_id)
202{
203 struct thread_data *td;
41fa20ec 204 pid_t pid = getpid();
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205 int i;
206
207 dprint(FD_PROCESS, "terminate group_id=%d\n", group_id);
208
209 for_each_td(td, i) {
210 if (group_id == TERMINATE_ALL || groupid == td->groupid) {
211 dprint(FD_PROCESS, "setting terminate on %s/%d\n",
212 td->o.name, (int) td->pid);
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213
214 if (td->terminate)
215 continue;
216
ebea2133 217 fio_mark_td_terminate(td);
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218 td->o.start_delay = 0;
219
220 /*
221 * if the thread is running, just let it exit
222 */
36d80bc7 223 if (!td->pid || pid == td->pid)
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224 continue;
225 else if (td->runstate < TD_RAMP)
226 kill(td->pid, SIGTERM);
36d80bc7 227 else {
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228 struct ioengine_ops *ops = td->io_ops;
229
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230 if (ops && ops->terminate)
231 ops->terminate(td);
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232 }
233 }
234 }
235}
236
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237int fio_running_or_pending_io_threads(void)
238{
239 struct thread_data *td;
240 int i;
241
242 for_each_td(td, i) {
243 if (td->flags & TD_F_NOIO)
244 continue;
245 if (td->runstate < TD_EXITED)
246 return 1;
247 }
248
249 return 0;
250}
251
3a35845f 252int fio_set_fd_nonblocking(int fd, const char *who)
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253{
254 int flags;
255
256 flags = fcntl(fd, F_GETFL);
257 if (flags < 0)
258 log_err("fio: %s failed to get file flags: %s\n", who, strerror(errno));
259 else {
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260 int new_flags = flags | O_NONBLOCK;
261
262 new_flags = fcntl(fd, F_SETFL, new_flags);
263 if (new_flags < 0)
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264 log_err("fio: %s failed to get file flags: %s\n", who, strerror(errno));
265 }
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266
267 return flags;
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268}
269
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270static int endian_check(void)
271{
272 union {
273 uint8_t c[8];
274 uint64_t v;
275 } u;
276 int le = 0, be = 0;
277
278 u.v = 0x12;
279 if (u.c[7] == 0x12)
280 be = 1;
281 else if (u.c[0] == 0x12)
282 le = 1;
283
284#if defined(CONFIG_LITTLE_ENDIAN)
285 if (be)
286 return 1;
287#elif defined(CONFIG_BIG_ENDIAN)
288 if (le)
289 return 1;
290#else
291 return 1;
292#endif
293
294 if (!le && !be)
295 return 1;
296
297 return 0;
298}
299
300int initialize_fio(char *envp[])
301{
302 long ps;
303
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304 /*
305 * We need these to be properly 64-bit aligned, otherwise we
306 * can run into problems on archs that fault on unaligned fp
307 * access (ARM).
308 */
24ffb6f8 309 compiletime_assert((offsetof(struct thread_stat, percentile_list) % 8) == 0, "stat percentile_list");
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310 compiletime_assert((offsetof(struct thread_stat, total_run_time) % 8) == 0, "total_run_time");
311 compiletime_assert((offsetof(struct thread_stat, total_err_count) % 8) == 0, "total_err_count");
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312 compiletime_assert((offsetof(struct thread_stat, latency_percentile) % 8) == 0, "stat latency_percentile");
313 compiletime_assert((offsetof(struct thread_options_pack, zipf_theta) % 8) == 0, "zipf_theta");
314 compiletime_assert((offsetof(struct thread_options_pack, pareto_h) % 8) == 0, "pareto_h");
315 compiletime_assert((offsetof(struct thread_options_pack, percentile_list) % 8) == 0, "percentile_list");
b8c6b4de 316 compiletime_assert((offsetof(struct thread_options_pack, latency_percentile) % 8) == 0, "latency_percentile");
976a7756 317
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318 if (endian_check()) {
319 log_err("fio: endianness settings appear wrong.\n");
320 log_err("fio: please report this to fio@vger.kernel.org\n");
321 return 1;
322 }
323
324#if !defined(CONFIG_GETTIMEOFDAY) && !defined(CONFIG_CLOCK_GETTIME)
325#error "No available clock source!"
326#endif
327
328 arch_init(envp);
329
330 sinit();
331
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332 if (fio_filelock_init()) {
333 log_err("fio: failed initializing filelock subsys\n");
334 return 1;
335 }
336
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337 /*
338 * We need locale for number printing, if it isn't set then just
339 * go with the US format.
340 */
341 if (!getenv("LC_NUMERIC"))
342 setlocale(LC_NUMERIC, "en_US");
343
344 ps = sysconf(_SC_PAGESIZE);
345 if (ps < 0) {
346 log_err("Failed to get page size\n");
347 return 1;
348 }
349
350 page_size = ps;
351 page_mask = ps - 1;
2e1df07d 352
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353 fio_keywords_init();
354 return 0;
355}