genfio: Splitting gen_template in 2 parts
[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>
30
2e1df07d 31#include "fio.h"
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32#include "smalloc.h"
33#include "os/os.h"
2e1df07d 34
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35/*
36 * Just expose an empty list, if the OS does not support disk util stats
37 */
38#ifndef FIO_HAVE_DISK_UTIL
39FLIST_HEAD(disk_list);
40#endif
41
42unsigned long arch_flags = 0;
43
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44uintptr_t page_mask = 0;
45uintptr_t page_size = 0;
46
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47static const char *fio_os_strings[os_nr] = {
48 "Invalid",
49 "Linux",
50 "AIX",
51 "FreeBSD",
52 "HP-UX",
53 "OSX",
54 "NetBSD",
55 "Solaris",
56 "Windows"
57};
58
59static const char *fio_arch_strings[arch_nr] = {
60 "Invalid",
61 "x86-64",
62 "x86",
63 "ppc",
64 "ia64",
65 "s390",
66 "alpha",
67 "sparc",
68 "sparc64",
69 "arm",
70 "sh",
71 "hppa",
72 "generic"
73};
74
75static void reset_io_counters(struct thread_data *td)
76{
6eaf09d6 77 int ddir;
bcd5abfa 78
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79 for (ddir = 0; ddir < DDIR_RWDIR_CNT; ddir++) {
80 td->stat_io_bytes[ddir] = 0;
81 td->this_io_bytes[ddir] = 0;
82 td->stat_io_blocks[ddir] = 0;
83 td->this_io_blocks[ddir] = 0;
84 td->rate_bytes[ddir] = 0;
85 td->rate_blocks[ddir] = 0;
bcd5abfa 86 td->io_issues[ddir] = 0;
6eaf09d6 87 }
2e1df07d 88 td->zone_bytes = 0;
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89
90 td->last_was_sync = 0;
bcd5abfa 91 td->rwmix_issues = 0;
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92
93 /*
94 * reset file done count if we are to start over
95 */
44cbc6da 96 if (td->o.time_based || td->o.loops || td->o.do_verify)
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97 td->nr_done_files = 0;
98}
99
100void clear_io_state(struct thread_data *td)
101{
102 struct fio_file *f;
103 unsigned int i;
104
105 reset_io_counters(td);
106
107 close_files(td);
108 for_each_file(td, f, i)
109 fio_file_clear_done(f);
110
111 /*
112 * Set the same seed to get repeatable runs
113 */
114 td_fill_rand_seeds(td);
115}
116
117void reset_all_stats(struct thread_data *td)
118{
119 struct timeval tv;
120 int i;
121
122 reset_io_counters(td);
123
6eaf09d6 124 for (i = 0; i < DDIR_RWDIR_CNT; i++) {
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125 td->io_bytes[i] = 0;
126 td->io_blocks[i] = 0;
127 td->io_issues[i] = 0;
128 td->ts.total_io_u[i] = 0;
6eaf09d6 129 td->ts.runtime[i] = 0;
5b3faae6 130 td->rwmix_issues = 0;
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131 }
132
133 fio_gettime(&tv, NULL);
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134 memcpy(&td->epoch, &tv, sizeof(tv));
135 memcpy(&td->start, &tv, sizeof(tv));
136}
137
138void reset_fio_state(void)
139{
140 groupid = 0;
141 thread_number = 0;
2caefeec 142 stat_number = 0;
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143 done_secs = 0;
144}
145
146const char *fio_get_os_string(int nr)
147{
148 if (nr < os_nr)
149 return fio_os_strings[nr];
150
151 return NULL;
152}
153
154const char *fio_get_arch_string(int nr)
155{
156 if (nr < arch_nr)
157 return fio_arch_strings[nr];
158
159 return NULL;
160}
161
162void td_set_runstate(struct thread_data *td, int runstate)
163{
164 if (td->runstate == runstate)
165 return;
166
167 dprint(FD_PROCESS, "pid=%d: runstate %d -> %d\n", (int) td->pid,
168 td->runstate, runstate);
169 td->runstate = runstate;
170}
171
172void fio_terminate_threads(int group_id)
173{
174 struct thread_data *td;
41fa20ec 175 pid_t pid = getpid();
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176 int i;
177
178 dprint(FD_PROCESS, "terminate group_id=%d\n", group_id);
179
180 for_each_td(td, i) {
181 if (group_id == TERMINATE_ALL || groupid == td->groupid) {
182 dprint(FD_PROCESS, "setting terminate on %s/%d\n",
183 td->o.name, (int) td->pid);
184 td->terminate = 1;
185 td->o.start_delay = 0;
186
187 /*
188 * if the thread is running, just let it exit
189 */
36d80bc7 190 if (!td->pid || pid == td->pid)
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191 continue;
192 else if (td->runstate < TD_RAMP)
193 kill(td->pid, SIGTERM);
36d80bc7 194 else {
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195 struct ioengine_ops *ops = td->io_ops;
196
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197 if (ops && ops->terminate)
198 ops->terminate(td);
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199 }
200 }
201 }
202}
203
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204static int endian_check(void)
205{
206 union {
207 uint8_t c[8];
208 uint64_t v;
209 } u;
210 int le = 0, be = 0;
211
212 u.v = 0x12;
213 if (u.c[7] == 0x12)
214 be = 1;
215 else if (u.c[0] == 0x12)
216 le = 1;
217
218#if defined(CONFIG_LITTLE_ENDIAN)
219 if (be)
220 return 1;
221#elif defined(CONFIG_BIG_ENDIAN)
222 if (le)
223 return 1;
224#else
225 return 1;
226#endif
227
228 if (!le && !be)
229 return 1;
230
231 return 0;
232}
233
234int initialize_fio(char *envp[])
235{
236 long ps;
237
238 if (endian_check()) {
239 log_err("fio: endianness settings appear wrong.\n");
240 log_err("fio: please report this to fio@vger.kernel.org\n");
241 return 1;
242 }
243
244#if !defined(CONFIG_GETTIMEOFDAY) && !defined(CONFIG_CLOCK_GETTIME)
245#error "No available clock source!"
246#endif
247
248 arch_init(envp);
249
250 sinit();
251
252 /*
253 * We need locale for number printing, if it isn't set then just
254 * go with the US format.
255 */
256 if (!getenv("LC_NUMERIC"))
257 setlocale(LC_NUMERIC, "en_US");
258
259 ps = sysconf(_SC_PAGESIZE);
260 if (ps < 0) {
261 log_err("Failed to get page size\n");
262 return 1;
263 }
264
265 page_size = ps;
266 page_mask = ps - 1;
2e1df07d 267
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268 fio_keywords_init();
269 return 0;
270}