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> | |
e61ca217 JA |
28 | #include <stdint.h> |
29 | #include <locale.h> | |
30 | ||
2e1df07d | 31 | #include "fio.h" |
e61ca217 JA |
32 | #include "smalloc.h" |
33 | #include "os/os.h" | |
2e1df07d | 34 | |
a3efc919 JA |
35 | /* |
36 | * Just expose an empty list, if the OS does not support disk util stats | |
37 | */ | |
38 | #ifndef FIO_HAVE_DISK_UTIL | |
39 | FLIST_HEAD(disk_list); | |
40 | #endif | |
41 | ||
42 | unsigned long arch_flags = 0; | |
43 | ||
61b29c20 JA |
44 | uintptr_t page_mask; |
45 | uintptr_t page_size; | |
e61ca217 | 46 | |
2e1df07d JA |
47 | static 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 | ||
59 | static 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 | ||
75 | static void reset_io_counters(struct thread_data *td) | |
76 | { | |
6eaf09d6 SL |
77 | int ddir; |
78 | for (ddir = 0; ddir < DDIR_RWDIR_CNT; ddir++) { | |
79 | td->stat_io_bytes[ddir] = 0; | |
80 | td->this_io_bytes[ddir] = 0; | |
81 | td->stat_io_blocks[ddir] = 0; | |
82 | td->this_io_blocks[ddir] = 0; | |
83 | td->rate_bytes[ddir] = 0; | |
84 | td->rate_blocks[ddir] = 0; | |
85 | } | |
2e1df07d | 86 | td->zone_bytes = 0; |
2e1df07d JA |
87 | |
88 | td->last_was_sync = 0; | |
89 | ||
90 | /* | |
91 | * reset file done count if we are to start over | |
92 | */ | |
93 | if (td->o.time_based || td->o.loops) | |
94 | td->nr_done_files = 0; | |
95 | } | |
96 | ||
97 | void clear_io_state(struct thread_data *td) | |
98 | { | |
99 | struct fio_file *f; | |
100 | unsigned int i; | |
101 | ||
102 | reset_io_counters(td); | |
103 | ||
104 | close_files(td); | |
105 | for_each_file(td, f, i) | |
106 | fio_file_clear_done(f); | |
107 | ||
108 | /* | |
109 | * Set the same seed to get repeatable runs | |
110 | */ | |
111 | td_fill_rand_seeds(td); | |
112 | } | |
113 | ||
114 | void reset_all_stats(struct thread_data *td) | |
115 | { | |
116 | struct timeval tv; | |
117 | int i; | |
118 | ||
119 | reset_io_counters(td); | |
120 | ||
6eaf09d6 | 121 | for (i = 0; i < DDIR_RWDIR_CNT; i++) { |
2e1df07d JA |
122 | td->io_bytes[i] = 0; |
123 | td->io_blocks[i] = 0; | |
124 | td->io_issues[i] = 0; | |
125 | td->ts.total_io_u[i] = 0; | |
6eaf09d6 | 126 | td->ts.runtime[i] = 0; |
2e1df07d JA |
127 | } |
128 | ||
129 | fio_gettime(&tv, NULL); | |
2e1df07d JA |
130 | memcpy(&td->epoch, &tv, sizeof(tv)); |
131 | memcpy(&td->start, &tv, sizeof(tv)); | |
132 | } | |
133 | ||
134 | void reset_fio_state(void) | |
135 | { | |
136 | groupid = 0; | |
137 | thread_number = 0; | |
559cf11a | 138 | stat_number = 0; |
2e1df07d JA |
139 | done_secs = 0; |
140 | } | |
141 | ||
142 | const char *fio_get_os_string(int nr) | |
143 | { | |
144 | if (nr < os_nr) | |
145 | return fio_os_strings[nr]; | |
146 | ||
147 | return NULL; | |
148 | } | |
149 | ||
150 | const char *fio_get_arch_string(int nr) | |
151 | { | |
152 | if (nr < arch_nr) | |
153 | return fio_arch_strings[nr]; | |
154 | ||
155 | return NULL; | |
156 | } | |
157 | ||
158 | void td_set_runstate(struct thread_data *td, int runstate) | |
159 | { | |
160 | if (td->runstate == runstate) | |
161 | return; | |
162 | ||
163 | dprint(FD_PROCESS, "pid=%d: runstate %d -> %d\n", (int) td->pid, | |
164 | td->runstate, runstate); | |
165 | td->runstate = runstate; | |
166 | } | |
167 | ||
168 | void fio_terminate_threads(int group_id) | |
169 | { | |
170 | struct thread_data *td; | |
41fa20ec | 171 | pid_t pid = getpid(); |
2e1df07d JA |
172 | int i; |
173 | ||
174 | dprint(FD_PROCESS, "terminate group_id=%d\n", group_id); | |
175 | ||
176 | for_each_td(td, i) { | |
177 | if (group_id == TERMINATE_ALL || groupid == td->groupid) { | |
178 | dprint(FD_PROCESS, "setting terminate on %s/%d\n", | |
179 | td->o.name, (int) td->pid); | |
180 | td->terminate = 1; | |
181 | td->o.start_delay = 0; | |
182 | ||
183 | /* | |
184 | * if the thread is running, just let it exit | |
185 | */ | |
36d80bc7 | 186 | if (!td->pid || pid == td->pid) |
2e1df07d JA |
187 | continue; |
188 | else if (td->runstate < TD_RAMP) | |
189 | kill(td->pid, SIGTERM); | |
190 | else { | |
191 | struct ioengine_ops *ops = td->io_ops; | |
192 | ||
36d80bc7 JA |
193 | if (ops && ops->terminate) |
194 | ops->terminate(td); | |
2e1df07d JA |
195 | } |
196 | } | |
197 | } | |
198 | } | |
199 | ||
e61ca217 JA |
200 | static int endian_check(void) |
201 | { | |
202 | union { | |
203 | uint8_t c[8]; | |
204 | uint64_t v; | |
205 | } u; | |
206 | int le = 0, be = 0; | |
207 | ||
208 | u.v = 0x12; | |
209 | if (u.c[7] == 0x12) | |
210 | be = 1; | |
211 | else if (u.c[0] == 0x12) | |
212 | le = 1; | |
213 | ||
214 | #if defined(FIO_LITTLE_ENDIAN) | |
215 | if (be) | |
216 | return 1; | |
217 | #elif defined(FIO_BIG_ENDIAN) | |
218 | if (le) | |
219 | return 1; | |
220 | #else | |
221 | return 1; | |
222 | #endif | |
223 | ||
224 | if (!le && !be) | |
225 | return 1; | |
226 | ||
227 | return 0; | |
228 | } | |
229 | ||
230 | int initialize_fio(char *envp[]) | |
231 | { | |
232 | long ps; | |
233 | ||
234 | if (endian_check()) { | |
235 | log_err("fio: endianness settings appear wrong.\n"); | |
236 | log_err("fio: please report this to fio@vger.kernel.org\n"); | |
237 | return 1; | |
238 | } | |
239 | ||
240 | arch_init(envp); | |
2e1df07d | 241 | |
e61ca217 JA |
242 | sinit(); |
243 | ||
244 | /* | |
245 | * We need locale for number printing, if it isn't set then just | |
246 | * go with the US format. | |
247 | */ | |
248 | if (!getenv("LC_NUMERIC")) | |
249 | setlocale(LC_NUMERIC, "en_US"); | |
250 | ||
251 | ps = sysconf(_SC_PAGESIZE); | |
252 | if (ps < 0) { | |
253 | log_err("Failed to get page size\n"); | |
254 | return 1; | |
255 | } | |
256 | ||
257 | page_size = ps; | |
258 | page_mask = ps - 1; | |
259 | ||
260 | fio_keywords_init(); | |
261 | return 0; | |
262 | } |