configure: check for gtk version using pkg-config
[fio.git] / libfio.c
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., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
22  *
23  */
24
25 #include <string.h>
26 #include <signal.h>
27 #include <stdint.h>
28 #include <locale.h>
29 #include <fcntl.h>
30
31 #include "fio.h"
32 #include "smalloc.h"
33 #include "os/os.h"
34 #include "filelock.h"
35 #include "helper_thread.h"
36 #include "filehash.h"
37
38 FLIST_HEAD(disk_list);
39
40 unsigned long arch_flags = 0;
41
42 uintptr_t page_mask = 0;
43 uintptr_t page_size = 0;
44
45 /* see os/os.h */
46 static const char *fio_os_strings[os_nr] = {
47         "Invalid",
48         "Linux",
49         "AIX",
50         "FreeBSD",
51         "HP-UX",
52         "OSX",
53         "NetBSD",
54         "OpenBSD",
55         "Solaris",
56         "Windows",
57         "Android",
58         "DragonFly",
59 };
60
61 /* see arch/arch.h */
62 static const char *fio_arch_strings[arch_nr] = {
63         "Invalid",
64         "x86-64",
65         "x86",
66         "ppc",
67         "ia64",
68         "s390",
69         "alpha",
70         "sparc",
71         "sparc64",
72         "arm",
73         "sh",
74         "hppa",
75         "mips",
76         "aarch64",
77         "generic"
78 };
79
80 static void reset_io_counters(struct thread_data *td, int all)
81 {
82         int ddir;
83
84         if (all) {
85                 for (ddir = 0; ddir < DDIR_RWDIR_CNT; ddir++) {
86                         td->stat_io_bytes[ddir] = 0;
87                         td->this_io_bytes[ddir] = 0;
88                         td->stat_io_blocks[ddir] = 0;
89                         td->this_io_blocks[ddir] = 0;
90                         td->rate_bytes[ddir] = 0;
91                         td->rate_blocks[ddir] = 0;
92                         td->bytes_done[ddir] = 0;
93                         td->rate_io_issue_bytes[ddir] = 0;
94                         td->rate_next_io_time[ddir] = 0;
95                         td->last_usec[ddir] = 0;
96                 }
97         }
98
99         td->zone_bytes = 0;
100
101         td->last_was_sync = false;
102         td->rwmix_issues = 0;
103
104         /*
105          * reset file done count if we are to start over
106          */
107         if (td->o.time_based || td->o.loops || td->o.do_verify)
108                 td->nr_done_files = 0;
109 }
110
111 void clear_io_state(struct thread_data *td, int all)
112 {
113         struct fio_file *f;
114         unsigned int i;
115
116         reset_io_counters(td, all);
117
118         close_files(td);
119         for_each_file(td, f, i) {
120                 fio_file_clear_done(f);
121                 f->file_offset = get_start_offset(td, f);
122         }
123
124         /*
125          * Re-Seed random number generator if rand_repeatable is true
126          */
127         if (td->o.rand_repeatable)
128                 td_fill_rand_seeds(td);
129 }
130
131 void reset_all_stats(struct thread_data *td)
132 {
133         int i;
134
135         reset_io_counters(td, 1);
136
137         for (i = 0; i < DDIR_RWDIR_CNT; i++) {
138                 td->io_bytes[i] = 0;
139                 td->io_blocks[i] = 0;
140                 td->io_issues[i] = 0;
141                 td->ts.total_io_u[i] = 0;
142                 td->ts.runtime[i] = 0;
143                 td->rwmix_issues = 0;
144         }
145
146         set_epoch_time(td, td->o.log_unix_epoch);
147         memcpy(&td->start, &td->epoch, sizeof(td->epoch));
148         memcpy(&td->iops_sample_time, &td->epoch, sizeof(td->epoch));
149         memcpy(&td->bw_sample_time, &td->epoch, sizeof(td->epoch));
150         memcpy(&td->ss.prev_time, &td->epoch, sizeof(td->epoch));
151
152         lat_target_reset(td);
153         clear_rusage_stat(td);
154         helper_reset();
155 }
156
157 void reset_fio_state(void)
158 {
159         groupid = 0;
160         thread_number = 0;
161         stat_number = 0;
162         done_secs = 0;
163 }
164
165 const char *fio_get_os_string(int nr)
166 {
167         if (nr < os_nr)
168                 return fio_os_strings[nr];
169
170         return NULL;
171 }
172
173 const char *fio_get_arch_string(int nr)
174 {
175         if (nr < arch_nr)
176                 return fio_arch_strings[nr];
177
178         return NULL;
179 }
180
181 static const char *td_runstates[] = {
182         "NOT_CREATED",
183         "CREATED",
184         "INITIALIZED",
185         "RAMP",
186         "SETTING_UP",
187         "RUNNING",
188         "PRE_READING",
189         "VERIFYING",
190         "FSYNCING",
191         "FINISHING",
192         "EXITED",
193         "REAPED",
194 };
195
196 const char *runstate_to_name(int runstate)
197 {
198         compiletime_assert(TD_LAST == 12, "td runstate list");
199         if (runstate >= 0 && runstate < TD_LAST)
200                 return td_runstates[runstate];
201
202         return "invalid";
203 }
204
205 void td_set_runstate(struct thread_data *td, int runstate)
206 {
207         if (td->runstate == runstate)
208                 return;
209
210         dprint(FD_PROCESS, "pid=%d: runstate %s -> %s\n", (int) td->pid,
211                                                 runstate_to_name(td->runstate),
212                                                 runstate_to_name(runstate));
213         td->runstate = runstate;
214 }
215
216 int td_bump_runstate(struct thread_data *td, int new_state)
217 {
218         int old_state = td->runstate;
219
220         td_set_runstate(td, new_state);
221         return old_state;
222 }
223
224 void td_restore_runstate(struct thread_data *td, int old_state)
225 {
226         td_set_runstate(td, old_state);
227 }
228
229 void fio_mark_td_terminate(struct thread_data *td)
230 {
231         fio_gettime(&td->terminate_time, NULL);
232         write_barrier();
233         td->terminate = true;
234 }
235
236 void fio_terminate_threads(unsigned int group_id)
237 {
238         struct thread_data *td;
239         pid_t pid = getpid();
240         int i;
241
242         dprint(FD_PROCESS, "terminate group_id=%d\n", group_id);
243
244         for_each_td(td, i) {
245                 if (group_id == TERMINATE_ALL || group_id == td->groupid) {
246                         dprint(FD_PROCESS, "setting terminate on %s/%d\n",
247                                                 td->o.name, (int) td->pid);
248
249                         if (td->terminate)
250                                 continue;
251
252                         fio_mark_td_terminate(td);
253                         td->o.start_delay = 0;
254
255                         /*
256                          * if the thread is running, just let it exit
257                          */
258                         if (!td->pid || pid == td->pid)
259                                 continue;
260                         else if (td->runstate < TD_RAMP)
261                                 kill(td->pid, SIGTERM);
262                         else {
263                                 struct ioengine_ops *ops = td->io_ops;
264
265                                 if (ops && ops->terminate)
266                                         ops->terminate(td);
267                         }
268                 }
269         }
270 }
271
272 int fio_running_or_pending_io_threads(void)
273 {
274         struct thread_data *td;
275         int i;
276         int nr_io_threads = 0;
277
278         for_each_td(td, i) {
279                 if (td->io_ops_init && td_ioengine_flagged(td, FIO_NOIO))
280                         continue;
281                 nr_io_threads++;
282                 if (td->runstate < TD_EXITED)
283                         return 1;
284         }
285
286         if (!nr_io_threads)
287                 return -1; /* we only had cpuio threads to begin with */
288         return 0;
289 }
290
291 int fio_set_fd_nonblocking(int fd, const char *who)
292 {
293         int flags;
294
295         flags = fcntl(fd, F_GETFL);
296         if (flags < 0)
297                 log_err("fio: %s failed to get file flags: %s\n", who, strerror(errno));
298         else {
299                 int new_flags = flags | O_NONBLOCK;
300
301                 new_flags = fcntl(fd, F_SETFL, new_flags);
302                 if (new_flags < 0)
303                         log_err("fio: %s failed to get file flags: %s\n", who, strerror(errno));
304         }
305
306         return flags;
307 }
308
309 enum {
310         ENDIAN_INVALID_BE = 1,
311         ENDIAN_INVALID_LE,
312         ENDIAN_INVALID_CONFIG,
313         ENDIAN_BROKEN,
314 };
315
316 static int endian_check(void)
317 {
318         union {
319                 uint8_t c[8];
320                 uint64_t v;
321         } u;
322         int le = 0, be = 0;
323
324         u.v = 0x12;
325         if (u.c[7] == 0x12)
326                 be = 1;
327         else if (u.c[0] == 0x12)
328                 le = 1;
329
330 #if defined(CONFIG_LITTLE_ENDIAN)
331         if (be)
332                 return ENDIAN_INVALID_BE;
333 #elif defined(CONFIG_BIG_ENDIAN)
334         if (le)
335                 return ENDIAN_INVALID_LE;
336 #else
337         return ENDIAN_INVALID_CONFIG;
338 #endif
339
340         if (!le && !be)
341                 return ENDIAN_BROKEN;
342
343         return 0;
344 }
345
346 int initialize_fio(char *envp[])
347 {
348         long ps;
349         int err;
350
351         /*
352          * We need these to be properly 64-bit aligned, otherwise we
353          * can run into problems on archs that fault on unaligned fp
354          * access (ARM).
355          */
356         compiletime_assert((offsetof(struct thread_data, ts) % sizeof(void *)) == 0, "ts");
357         compiletime_assert((offsetof(struct thread_stat, percentile_list) % 8) == 0, "stat percentile_list");
358         compiletime_assert((offsetof(struct thread_stat, total_run_time) % 8) == 0, "total_run_time");
359         compiletime_assert((offsetof(struct thread_stat, total_err_count) % 8) == 0, "total_err_count");
360         compiletime_assert((offsetof(struct thread_stat, latency_percentile) % 8) == 0, "stat latency_percentile");
361         compiletime_assert((offsetof(struct thread_data, ts.clat_stat) % 8) == 0, "ts.clat_stat");
362         compiletime_assert((offsetof(struct thread_options_pack, zipf_theta) % 8) == 0, "zipf_theta");
363         compiletime_assert((offsetof(struct thread_options_pack, pareto_h) % 8) == 0, "pareto_h");
364         compiletime_assert((offsetof(struct thread_options_pack, percentile_list) % 8) == 0, "percentile_list");
365         compiletime_assert((offsetof(struct thread_options_pack, latency_percentile) % 8) == 0, "latency_percentile");
366         compiletime_assert((offsetof(struct jobs_eta, m_rate) % 8) == 0, "m_rate");
367
368         compiletime_assert(__TD_F_LAST <= TD_ENG_FLAG_SHIFT, "TD_ENG_FLAG_SHIFT");
369         compiletime_assert(BSSPLIT_MAX <= ZONESPLIT_MAX, "bsssplit/zone max");
370
371         err = endian_check();
372         if (err) {
373                 log_err("fio: endianness settings appear wrong.\n");
374                 switch (err) {
375                 case ENDIAN_INVALID_BE:
376                         log_err("fio: got big-endian when configured for little\n");
377                         break;
378                 case ENDIAN_INVALID_LE:
379                         log_err("fio: got little-endian when configured for big\n");
380                         break;
381                 case ENDIAN_INVALID_CONFIG:
382                         log_err("fio: not configured to any endianness\n");
383                         break;
384                 case ENDIAN_BROKEN:
385                         log_err("fio: failed to detect endianness\n");
386                         break;
387                 default:
388                         assert(0);
389                         break;
390                 }
391                 log_err("fio: please report this to fio@vger.kernel.org\n");
392                 return 1;
393         }
394
395 #if !defined(CONFIG_GETTIMEOFDAY) && !defined(CONFIG_CLOCK_GETTIME)
396 #error "No available clock source!"
397 #endif
398
399         arch_init(envp);
400
401         sinit();
402
403         if (fio_filelock_init()) {
404                 log_err("fio: failed initializing filelock subsys\n");
405                 return 1;
406         }
407
408         file_hash_init();
409
410         /*
411          * We need locale for number printing, if it isn't set then just
412          * go with the US format.
413          */
414         if (!getenv("LC_NUMERIC"))
415                 setlocale(LC_NUMERIC, "en_US");
416
417         ps = sysconf(_SC_PAGESIZE);
418         if (ps < 0) {
419                 log_err("Failed to get page size\n");
420                 return 1;
421         }
422
423         page_size = ps;
424         page_mask = ps - 1;
425
426         fio_keywords_init();
427         return 0;
428 }
429
430 void deinitialize_fio(void)
431 {
432         fio_keywords_exit();
433 }