Commit | Line | Data |
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d0ca268b JA |
1 | /* |
2 | * block queue tracing application | |
3 | * | |
d956a2cd JA |
4 | * Copyright (C) 2005 Jens Axboe <axboe@suse.de> |
5 | * | |
6 | * This program is free software; you can redistribute it and/or modify | |
7 | * it under the terms of the GNU General Public License as published by | |
8 | * the Free Software Foundation; either version 2 of the License, or | |
9 | * (at your option) any later version. | |
10 | * | |
11 | * This program is distributed in the hope that it will be useful, | |
12 | * but WITHOUT ANY WARRANTY; without even the implied warranty of | |
13 | * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the | |
14 | * GNU General Public License for more details. | |
15 | * | |
16 | * You should have received a copy of the GNU General Public License | |
17 | * along with this program; if not, write to the Free Software | |
18 | * Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA | |
19 | * | |
d0ca268b JA |
20 | */ |
21 | #include <pthread.h> | |
22 | #include <sys/types.h> | |
23 | #include <sys/stat.h> | |
24 | #include <unistd.h> | |
25 | #include <locale.h> | |
26 | #include <signal.h> | |
27 | #include <fcntl.h> | |
28 | #include <string.h> | |
29 | #include <sys/ioctl.h> | |
b9d4294e | 30 | #include <sys/param.h> |
e3e74029 | 31 | #include <sys/statfs.h> |
eb3c8108 | 32 | #include <sys/poll.h> |
b7106311 | 33 | #include <sys/mman.h> |
8e86c98a | 34 | #include <sys/socket.h> |
d0ca268b JA |
35 | #include <stdio.h> |
36 | #include <stdlib.h> | |
37 | #include <sched.h> | |
d39c04ca AB |
38 | #include <ctype.h> |
39 | #include <getopt.h> | |
da39451f | 40 | #include <errno.h> |
8e86c98a JA |
41 | #include <netinet/in.h> |
42 | #include <arpa/inet.h> | |
43 | #include <netdb.h> | |
32f18c48 | 44 | #include <sys/sendfile.h> |
d0ca268b JA |
45 | |
46 | #include "blktrace.h" | |
21f55651 | 47 | #include "barrier.h" |
d0ca268b | 48 | |
13d928f0 | 49 | static char blktrace_version[] = "0.99"; |
52724a0e | 50 | |
8f551a39 JA |
51 | /* |
52 | * You may want to increase this even more, if you are logging at a high | |
53 | * rate and see skipped/missed events | |
54 | */ | |
007c233c | 55 | #define BUF_SIZE (512 * 1024) |
d0ca268b JA |
56 | #define BUF_NR (4) |
57 | ||
007c233c JA |
58 | #define OFILE_BUF (128 * 1024) |
59 | ||
e3e74029 NS |
60 | #define RELAYFS_TYPE 0xF0B4A981 |
61 | ||
32f18c48 | 62 | #define S_OPTS "d:a:A:r:o:kw:Vb:n:D:lh:p:s" |
d5396421 | 63 | static struct option l_opts[] = { |
5c86134e | 64 | { |
d39c04ca | 65 | .name = "dev", |
428683db | 66 | .has_arg = required_argument, |
d39c04ca AB |
67 | .flag = NULL, |
68 | .val = 'd' | |
69 | }, | |
5c86134e | 70 | { |
d39c04ca | 71 | .name = "act-mask", |
428683db | 72 | .has_arg = required_argument, |
d39c04ca AB |
73 | .flag = NULL, |
74 | .val = 'a' | |
75 | }, | |
5c86134e | 76 | { |
d39c04ca | 77 | .name = "set-mask", |
428683db | 78 | .has_arg = required_argument, |
d39c04ca AB |
79 | .flag = NULL, |
80 | .val = 'A' | |
81 | }, | |
5c86134e | 82 | { |
5270dddd | 83 | .name = "relay", |
428683db | 84 | .has_arg = required_argument, |
5270dddd JA |
85 | .flag = NULL, |
86 | .val = 'r' | |
87 | }, | |
d5396421 JA |
88 | { |
89 | .name = "output", | |
428683db | 90 | .has_arg = required_argument, |
d5396421 JA |
91 | .flag = NULL, |
92 | .val = 'o' | |
93 | }, | |
bc39777c JA |
94 | { |
95 | .name = "kill", | |
428683db | 96 | .has_arg = no_argument, |
bc39777c JA |
97 | .flag = NULL, |
98 | .val = 'k' | |
99 | }, | |
ece238a6 NS |
100 | { |
101 | .name = "stopwatch", | |
428683db | 102 | .has_arg = required_argument, |
ece238a6 NS |
103 | .flag = NULL, |
104 | .val = 'w' | |
105 | }, | |
52724a0e JA |
106 | { |
107 | .name = "version", | |
108 | .has_arg = no_argument, | |
109 | .flag = NULL, | |
57ea8602 | 110 | .val = 'V' |
52724a0e | 111 | }, |
129aa440 | 112 | { |
3f65c585 | 113 | .name = "buffer-size", |
129aa440 JA |
114 | .has_arg = required_argument, |
115 | .flag = NULL, | |
116 | .val = 'b' | |
117 | }, | |
118 | { | |
3f65c585 | 119 | .name = "num-sub-buffers", |
129aa440 JA |
120 | .has_arg = required_argument, |
121 | .flag = NULL, | |
122 | .val = 'n' | |
123 | }, | |
d1d7f15f | 124 | { |
3f65c585 | 125 | .name = "output-dir", |
d1d7f15f JA |
126 | .has_arg = required_argument, |
127 | .flag = NULL, | |
128 | .val = 'D' | |
129 | }, | |
8e86c98a JA |
130 | { |
131 | .name = "listen", | |
132 | .has_arg = no_argument, | |
133 | .flag = NULL, | |
134 | .val = 'l' | |
135 | }, | |
136 | { | |
137 | .name = "host", | |
138 | .has_arg = required_argument, | |
139 | .flag = NULL, | |
140 | .val = 'h' | |
141 | }, | |
142 | { | |
143 | .name = "port", | |
144 | .has_arg = required_argument, | |
145 | .flag = NULL, | |
146 | .val = 'p' | |
147 | }, | |
32f18c48 JA |
148 | { |
149 | .name = "sendfile", | |
150 | .has_arg = no_argument, | |
151 | .flag = NULL, | |
152 | .val = 's' | |
153 | }, | |
71ef8b7c JA |
154 | { |
155 | .name = NULL, | |
156 | } | |
d39c04ca AB |
157 | }; |
158 | ||
9db17354 | 159 | struct tip_subbuf { |
9db17354 | 160 | void *buf; |
5be4bdaf JA |
161 | unsigned int len; |
162 | unsigned int max_len; | |
9db17354 JA |
163 | }; |
164 | ||
21f55651 JA |
165 | #define FIFO_SIZE (1024) /* should be plenty big! */ |
166 | #define CL_SIZE (128) /* cache line, any bigger? */ | |
167 | ||
168 | struct tip_subbuf_fifo { | |
169 | int tail __attribute__((aligned(CL_SIZE))); | |
170 | int head __attribute__((aligned(CL_SIZE))); | |
171 | struct tip_subbuf *q[FIFO_SIZE]; | |
172 | }; | |
173 | ||
d0ca268b JA |
174 | struct thread_information { |
175 | int cpu; | |
176 | pthread_t thread; | |
b9d4294e JA |
177 | |
178 | int fd; | |
a3e4d330 | 179 | void *fd_buf; |
b9d4294e JA |
180 | char fn[MAXPATHLEN + 64]; |
181 | ||
e3bf54d8 JA |
182 | struct in_addr cl_in_addr; |
183 | ||
007c233c JA |
184 | FILE *ofile; |
185 | char *ofile_buffer; | |
32f18c48 | 186 | off_t ofile_offset; |
9db17354 | 187 | int ofile_stdout; |
8e86c98a | 188 | int ofile_mmap; |
11629347 | 189 | volatile int sendfile_pending; |
007c233c | 190 | |
0cc7d25e JA |
191 | int (*get_subbuf)(struct thread_information *, unsigned int); |
192 | int (*flush_subbuf)(struct thread_information *, struct tip_subbuf *); | |
193 | int (*read_data)(struct thread_information *, void *, unsigned int); | |
194 | ||
d0ca268b | 195 | unsigned long events_processed; |
b7106311 | 196 | unsigned long long data_read; |
bcbeb60f | 197 | unsigned long long data_queued; |
e7c9f3ff | 198 | struct device_information *device; |
9db17354 JA |
199 | |
200 | int exited; | |
201 | ||
b7106311 JA |
202 | /* |
203 | * piped fifo buffers | |
204 | */ | |
21f55651 | 205 | struct tip_subbuf_fifo fifo; |
7de86b12 | 206 | struct tip_subbuf *leftover_ts; |
b7106311 JA |
207 | |
208 | /* | |
209 | * mmap controlled output files | |
210 | */ | |
211 | unsigned long long fs_size; | |
212 | unsigned long long fs_max_size; | |
213 | unsigned long fs_off; | |
214 | void *fs_buf; | |
215 | unsigned long fs_buf_len; | |
d0ca268b JA |
216 | }; |
217 | ||
e7c9f3ff NS |
218 | struct device_information { |
219 | int fd; | |
220 | char *path; | |
221 | char buts_name[32]; | |
99c1f5ab | 222 | volatile int trace_started; |
eb3c8108 | 223 | unsigned long drop_count; |
e7c9f3ff NS |
224 | struct thread_information *threads; |
225 | }; | |
d0ca268b | 226 | |
e7c9f3ff | 227 | static int ncpus; |
d0ca268b | 228 | static struct thread_information *thread_information; |
e7c9f3ff NS |
229 | static int ndevs; |
230 | static struct device_information *device_information; | |
231 | ||
232 | /* command line option globals */ | |
233 | static char *relay_path; | |
d5396421 | 234 | static char *output_name; |
d1d7f15f | 235 | static char *output_dir; |
5c86134e | 236 | static int act_mask = ~0U; |
bc39777c | 237 | static int kill_running_trace; |
eb3c8108 JA |
238 | static unsigned long buf_size = BUF_SIZE; |
239 | static unsigned long buf_nr = BUF_NR; | |
b7106311 | 240 | static unsigned int page_size; |
d39c04ca | 241 | |
e7c9f3ff NS |
242 | #define is_done() (*(volatile int *)(&done)) |
243 | static volatile int done; | |
244 | ||
eb3c8108 JA |
245 | #define is_trace_stopped() (*(volatile int *)(&trace_stopped)) |
246 | static volatile int trace_stopped; | |
247 | ||
248 | #define is_stat_shown() (*(volatile int *)(&stat_shown)) | |
249 | static volatile int stat_shown; | |
a3e4d330 | 250 | |
8e86c98a JA |
251 | int data_is_native = -1; |
252 | ||
72ca8801 NS |
253 | static void exit_trace(int status); |
254 | ||
99c1f5ab JA |
255 | #define dip_tracing(dip) (*(volatile int *)(&(dip)->trace_started)) |
256 | #define dip_set_tracing(dip, v) ((dip)->trace_started = (v)) | |
257 | ||
258 | #define __for_each_dip(__d, __i, __e) \ | |
259 | for (__i = 0, __d = device_information; __i < __e; __i++, __d++) | |
260 | ||
261 | #define for_each_dip(__d, __i) __for_each_dip(__d, __i, ndevs) | |
9db17354 JA |
262 | #define for_each_tip(__d, __t, __j) \ |
263 | for (__j = 0, __t = (__d)->threads; __j < ncpus; __j++, __t++) | |
99c1f5ab | 264 | |
8e86c98a JA |
265 | /* |
266 | * networking stuff follows. we include a magic number so we know whether | |
267 | * to endianness convert or not | |
268 | */ | |
269 | struct blktrace_net_hdr { | |
270 | u32 magic; /* same as trace magic */ | |
22cd0c02 | 271 | char buts_name[32]; /* trace name */ |
8e86c98a | 272 | u32 cpu; /* for which cpu */ |
22cd0c02 | 273 | u32 max_cpus; |
8e86c98a JA |
274 | u32 len; /* length of following trace data */ |
275 | }; | |
276 | ||
277 | #define TRACE_NET_PORT (8462) | |
278 | ||
279 | enum { | |
280 | Net_none = 0, | |
281 | Net_server, | |
282 | Net_client, | |
283 | }; | |
284 | ||
285 | /* | |
286 | * network cmd line params | |
287 | */ | |
288 | static char hostname[MAXHOSTNAMELEN]; | |
289 | static int net_port = TRACE_NET_PORT; | |
290 | static int net_mode = 0; | |
f6fead25 | 291 | static int net_use_sendfile; |
8e86c98a JA |
292 | |
293 | static int net_in_fd = -1; | |
294 | static int net_out_fd = -1; | |
295 | ||
296 | static void handle_sigint(__attribute__((__unused__)) int sig) | |
297 | { | |
7035d92d JA |
298 | struct device_information *dip; |
299 | int i; | |
300 | ||
301 | /* | |
302 | * stop trace so we can reap currently produced data | |
303 | */ | |
304 | for_each_dip(dip, i) { | |
921b05fe JA |
305 | if (dip->fd == -1) |
306 | continue; | |
7035d92d JA |
307 | if (ioctl(dip->fd, BLKTRACESTOP) < 0) |
308 | perror("BLKTRACESTOP"); | |
309 | } | |
310 | ||
8e86c98a JA |
311 | done = 1; |
312 | } | |
313 | ||
eb3c8108 JA |
314 | static int get_dropped_count(const char *buts_name) |
315 | { | |
316 | int fd; | |
317 | char tmp[MAXPATHLEN + 64]; | |
318 | ||
319 | snprintf(tmp, sizeof(tmp), "%s/block/%s/dropped", | |
320 | relay_path, buts_name); | |
321 | ||
322 | fd = open(tmp, O_RDONLY); | |
323 | if (fd < 0) { | |
324 | /* | |
325 | * this may be ok, if the kernel doesn't support dropped counts | |
326 | */ | |
327 | if (errno == ENOENT) | |
328 | return 0; | |
329 | ||
330 | fprintf(stderr, "Couldn't open dropped file %s\n", tmp); | |
331 | return -1; | |
332 | } | |
333 | ||
334 | if (read(fd, tmp, sizeof(tmp)) < 0) { | |
335 | perror(tmp); | |
336 | close(fd); | |
337 | return -1; | |
338 | } | |
339 | ||
340 | close(fd); | |
341 | ||
342 | return atoi(tmp); | |
343 | } | |
344 | ||
e7c9f3ff | 345 | static int start_trace(struct device_information *dip) |
d0ca268b JA |
346 | { |
347 | struct blk_user_trace_setup buts; | |
348 | ||
1f79c4a0 | 349 | memset(&buts, 0, sizeof(buts)); |
129aa440 JA |
350 | buts.buf_size = buf_size; |
351 | buts.buf_nr = buf_nr; | |
d39c04ca | 352 | buts.act_mask = act_mask; |
d0ca268b | 353 | |
ed71a31e JA |
354 | if (ioctl(dip->fd, BLKTRACESETUP, &buts) < 0) { |
355 | perror("BLKTRACESETUP"); | |
356 | return 1; | |
357 | } | |
358 | ||
359 | if (ioctl(dip->fd, BLKTRACESTART) < 0) { | |
360 | perror("BLKTRACESTART"); | |
d0ca268b JA |
361 | return 1; |
362 | } | |
363 | ||
e7c9f3ff | 364 | memcpy(dip->buts_name, buts.name, sizeof(dip->buts_name)); |
99c1f5ab | 365 | dip_set_tracing(dip, 1); |
d0ca268b JA |
366 | return 0; |
367 | } | |
368 | ||
e7c9f3ff | 369 | static void stop_trace(struct device_information *dip) |
d0ca268b | 370 | { |
99c1f5ab JA |
371 | if (dip_tracing(dip) || kill_running_trace) { |
372 | dip_set_tracing(dip, 0); | |
cf9208ea | 373 | |
7035d92d JA |
374 | /* |
375 | * should be stopped, just don't complain if it isn't | |
376 | */ | |
377 | ioctl(dip->fd, BLKTRACESTOP); | |
378 | ||
ed71a31e JA |
379 | if (ioctl(dip->fd, BLKTRACETEARDOWN) < 0) |
380 | perror("BLKTRACETEARDOWN"); | |
cf9208ea | 381 | |
e7c9f3ff | 382 | close(dip->fd); |
cf9208ea | 383 | dip->fd = -1; |
707b0914 | 384 | } |
d0ca268b JA |
385 | } |
386 | ||
e7c9f3ff NS |
387 | static void stop_all_traces(void) |
388 | { | |
389 | struct device_information *dip; | |
390 | int i; | |
391 | ||
eb3c8108 JA |
392 | for_each_dip(dip, i) { |
393 | dip->drop_count = get_dropped_count(dip->buts_name); | |
e7c9f3ff | 394 | stop_trace(dip); |
eb3c8108 | 395 | } |
e7c9f3ff NS |
396 | } |
397 | ||
eb3c8108 JA |
398 | static void wait_for_data(struct thread_information *tip) |
399 | { | |
400 | struct pollfd pfd = { .fd = tip->fd, .events = POLLIN }; | |
401 | ||
9db17354 | 402 | do { |
b4aabcb3 | 403 | poll(&pfd, 1, 100); |
9db17354 JA |
404 | if (pfd.revents & POLLIN) |
405 | break; | |
406 | if (tip->ofile_stdout) | |
407 | break; | |
408 | } while (!is_done()); | |
eb3c8108 JA |
409 | } |
410 | ||
0cc7d25e JA |
411 | static int read_data_file(struct thread_information *tip, void *buf, |
412 | unsigned int len) | |
d0ca268b | 413 | { |
ae9f71b3 | 414 | int ret = 0; |
bbabf03a | 415 | |
9db17354 JA |
416 | do { |
417 | wait_for_data(tip); | |
ae9f71b3 | 418 | |
9db17354 JA |
419 | ret = read(tip->fd, buf, len); |
420 | if (!ret) | |
421 | continue; | |
422 | else if (ret > 0) | |
423 | return ret; | |
424 | else { | |
bbabf03a | 425 | if (errno != EAGAIN) { |
a3e4d330 JA |
426 | perror(tip->fn); |
427 | fprintf(stderr,"Thread %d failed read of %s\n", | |
428 | tip->cpu, tip->fn); | |
429 | break; | |
430 | } | |
9db17354 | 431 | continue; |
bbabf03a | 432 | } |
9db17354 | 433 | } while (!is_done()); |
8a43bac5 | 434 | |
bbabf03a | 435 | return ret; |
8e86c98a | 436 | |
8a43bac5 JA |
437 | } |
438 | ||
0cc7d25e JA |
439 | static int read_data_net(struct thread_information *tip, void *buf, |
440 | unsigned int len) | |
8e86c98a JA |
441 | { |
442 | unsigned int bytes_left = len; | |
443 | int ret = 0; | |
444 | ||
445 | do { | |
446 | ret = recv(net_in_fd, buf, bytes_left, MSG_WAITALL); | |
447 | ||
448 | if (!ret) | |
449 | continue; | |
450 | else if (ret < 0) { | |
451 | if (errno != EAGAIN) { | |
452 | perror(tip->fn); | |
453 | fprintf(stderr, "server: failed read\n"); | |
454 | return 0; | |
455 | } | |
456 | continue; | |
457 | } else { | |
458 | buf += ret; | |
459 | bytes_left -= ret; | |
460 | } | |
461 | } while (!is_done() && bytes_left); | |
462 | ||
410d7c62 | 463 | return len - bytes_left; |
8e86c98a JA |
464 | } |
465 | ||
0cc7d25e JA |
466 | static int read_data(struct thread_information *tip, void *buf, |
467 | unsigned int len) | |
8e86c98a | 468 | { |
663962f7 | 469 | return tip->read_data(tip, buf, len); |
8e86c98a JA |
470 | } |
471 | ||
472 | static inline struct tip_subbuf * | |
473 | subbuf_fifo_dequeue(struct thread_information *tip) | |
a3e4d330 | 474 | { |
21f55651 JA |
475 | const int head = tip->fifo.head; |
476 | const int next = (head + 1) & (FIFO_SIZE - 1); | |
477 | ||
478 | if (head != tip->fifo.tail) { | |
479 | struct tip_subbuf *ts = tip->fifo.q[head]; | |
480 | ||
481 | store_barrier(); | |
482 | tip->fifo.head = next; | |
483 | return ts; | |
484 | } | |
485 | ||
486 | return NULL; | |
9db17354 | 487 | } |
eb3c8108 | 488 | |
21f55651 JA |
489 | static inline int subbuf_fifo_queue(struct thread_information *tip, |
490 | struct tip_subbuf *ts) | |
9db17354 | 491 | { |
21f55651 JA |
492 | const int tail = tip->fifo.tail; |
493 | const int next = (tail + 1) & (FIFO_SIZE - 1); | |
494 | ||
495 | if (next != tip->fifo.head) { | |
496 | tip->fifo.q[tail] = ts; | |
497 | store_barrier(); | |
498 | tip->fifo.tail = next; | |
499 | return 0; | |
500 | } | |
501 | ||
502 | fprintf(stderr, "fifo too small!\n"); | |
503 | return 1; | |
a3e4d330 JA |
504 | } |
505 | ||
b7106311 JA |
506 | /* |
507 | * For file output, truncate and mmap the file appropriately | |
508 | */ | |
8e86c98a | 509 | static int mmap_subbuf(struct thread_information *tip, unsigned int maxlen) |
b7106311 JA |
510 | { |
511 | int ofd = fileno(tip->ofile); | |
512 | int ret; | |
513 | ||
514 | /* | |
515 | * extend file, if we have to. use chunks of 16 subbuffers. | |
516 | */ | |
517 | if (tip->fs_off + buf_size > tip->fs_buf_len) { | |
518 | if (tip->fs_buf) { | |
5975d309 | 519 | munlock(tip->fs_buf, tip->fs_buf_len); |
b7106311 JA |
520 | munmap(tip->fs_buf, tip->fs_buf_len); |
521 | tip->fs_buf = NULL; | |
522 | } | |
523 | ||
524 | tip->fs_off = tip->fs_size & (page_size - 1); | |
525 | tip->fs_buf_len = (16 * buf_size) - tip->fs_off; | |
526 | tip->fs_max_size += tip->fs_buf_len; | |
527 | ||
528 | if (ftruncate(ofd, tip->fs_max_size) < 0) { | |
529 | perror("ftruncate"); | |
530 | return -1; | |
531 | } | |
532 | ||
533 | tip->fs_buf = mmap(NULL, tip->fs_buf_len, PROT_WRITE, | |
534 | MAP_SHARED, ofd, tip->fs_size - tip->fs_off); | |
535 | if (tip->fs_buf == MAP_FAILED) { | |
536 | perror("mmap"); | |
537 | return -1; | |
538 | } | |
5975d309 | 539 | mlock(tip->fs_buf, tip->fs_buf_len); |
b7106311 JA |
540 | } |
541 | ||
8e86c98a | 542 | ret = read_data(tip, tip->fs_buf + tip->fs_off, maxlen); |
b7106311 | 543 | if (ret >= 0) { |
dbfbd6db | 544 | tip->data_read += ret; |
b7106311 JA |
545 | tip->fs_size += ret; |
546 | tip->fs_off += ret; | |
547 | return 0; | |
548 | } | |
549 | ||
550 | return -1; | |
551 | } | |
552 | ||
18eed2a7 JA |
553 | /* |
554 | * Use the copy approach for pipes and network | |
555 | */ | |
556 | static int get_subbuf(struct thread_information *tip, unsigned int maxlen) | |
557 | { | |
558 | struct tip_subbuf *ts = malloc(sizeof(*ts)); | |
559 | int ret; | |
560 | ||
561 | ts->buf = malloc(buf_size); | |
562 | ts->max_len = maxlen; | |
563 | ||
564 | ret = read_data(tip, ts->buf, ts->max_len); | |
565 | if (ret > 0) { | |
566 | ts->len = ret; | |
dbfbd6db | 567 | tip->data_read += ret; |
7035d92d JA |
568 | if (subbuf_fifo_queue(tip, ts)) |
569 | return -1; | |
18eed2a7 JA |
570 | } |
571 | ||
572 | return ret; | |
573 | } | |
574 | ||
32f18c48 JA |
575 | static int get_subbuf_sendfile(struct thread_information *tip, |
576 | unsigned int maxlen) | |
577 | { | |
11eedd9b | 578 | struct tip_subbuf *ts; |
bcbeb60f TZ |
579 | struct stat sb; |
580 | unsigned int ready; | |
32f18c48 | 581 | |
18eed2a7 JA |
582 | wait_for_data(tip); |
583 | ||
584 | /* | |
585 | * hack to get last data out, we can't use sendfile for that | |
586 | */ | |
587 | if (is_done()) | |
588 | return get_subbuf(tip, maxlen); | |
589 | ||
11629347 | 590 | if (tip->sendfile_pending) { |
663962f7 | 591 | usleep(100); |
11eedd9b | 592 | return 0; |
663962f7 | 593 | } |
11eedd9b | 594 | |
bcbeb60f TZ |
595 | if (fstat(tip->fd, &sb) < 0) { |
596 | perror("trace stat"); | |
597 | return -1; | |
598 | } | |
599 | ready = sb.st_size - tip->data_queued; | |
600 | if (!ready) | |
601 | return 0; | |
602 | ||
11629347 JA |
603 | ts = malloc(sizeof(*ts)); |
604 | ts->buf = NULL; | |
605 | ts->max_len = 0; | |
bcbeb60f TZ |
606 | ts->len = ready; |
607 | tip->data_queued += ready; | |
1be42f3d | 608 | |
11629347 JA |
609 | if (subbuf_fifo_queue(tip, ts)) |
610 | return -1; | |
11eedd9b | 611 | |
11629347 | 612 | tip->sendfile_pending++; |
bcbeb60f | 613 | return ready; |
32f18c48 JA |
614 | } |
615 | ||
9db17354 | 616 | static void close_thread(struct thread_information *tip) |
a3e4d330 | 617 | { |
9db17354 JA |
618 | if (tip->fd != -1) |
619 | close(tip->fd); | |
620 | if (tip->ofile) | |
621 | fclose(tip->ofile); | |
622 | if (tip->ofile_buffer) | |
623 | free(tip->ofile_buffer); | |
624 | if (tip->fd_buf) | |
625 | free(tip->fd_buf); | |
1c99bc21 | 626 | |
9db17354 JA |
627 | tip->fd = -1; |
628 | tip->ofile = NULL; | |
629 | tip->ofile_buffer = NULL; | |
630 | tip->fd_buf = NULL; | |
a3e4d330 JA |
631 | } |
632 | ||
8e86c98a JA |
633 | static void tip_ftrunc_final(struct thread_information *tip) |
634 | { | |
635 | /* | |
636 | * truncate to right size and cleanup mmap | |
637 | */ | |
638 | if (tip->ofile_mmap) { | |
639 | int ofd = fileno(tip->ofile); | |
640 | ||
641 | if (tip->fs_buf) | |
642 | munmap(tip->fs_buf, tip->fs_buf_len); | |
643 | ||
644 | ftruncate(ofd, tip->fs_size); | |
645 | } | |
646 | } | |
647 | ||
9db17354 | 648 | static void *thread_main(void *arg) |
a3e4d330 | 649 | { |
9db17354 JA |
650 | struct thread_information *tip = arg; |
651 | pid_t pid = getpid(); | |
652 | cpu_set_t cpu_mask; | |
a3e4d330 | 653 | |
9db17354 JA |
654 | CPU_ZERO(&cpu_mask); |
655 | CPU_SET((tip->cpu), &cpu_mask); | |
a3e4d330 | 656 | |
9db17354 JA |
657 | if (sched_setaffinity(pid, sizeof(cpu_mask), &cpu_mask) == -1) { |
658 | perror("sched_setaffinity"); | |
659 | exit_trace(1); | |
660 | } | |
a3e4d330 | 661 | |
9db17354 JA |
662 | snprintf(tip->fn, sizeof(tip->fn), "%s/block/%s/trace%d", |
663 | relay_path, tip->device->buts_name, tip->cpu); | |
664 | tip->fd = open(tip->fn, O_RDONLY); | |
665 | if (tip->fd < 0) { | |
666 | perror(tip->fn); | |
667 | fprintf(stderr,"Thread %d failed open of %s\n", tip->cpu, | |
668 | tip->fn); | |
669 | exit_trace(1); | |
a3e4d330 JA |
670 | } |
671 | ||
b7106311 | 672 | while (!is_done()) { |
7035d92d | 673 | if (tip->get_subbuf(tip, buf_size) < 0) |
0cc7d25e | 674 | break; |
b7106311 JA |
675 | } |
676 | ||
7035d92d JA |
677 | /* |
678 | * trace is stopped, pull data until we get a short read | |
679 | */ | |
680 | while (tip->get_subbuf(tip, buf_size) > 0) | |
681 | ; | |
682 | ||
8e86c98a JA |
683 | tip_ftrunc_final(tip); |
684 | tip->exited = 1; | |
685 | return NULL; | |
686 | } | |
b7106311 | 687 | |
8e86c98a JA |
688 | static int write_data_net(int fd, void *buf, unsigned int buf_len) |
689 | { | |
690 | unsigned int bytes_left = buf_len; | |
691 | int ret; | |
b7106311 | 692 | |
8e86c98a JA |
693 | while (bytes_left) { |
694 | ret = send(fd, buf, bytes_left, 0); | |
695 | if (ret < 0) { | |
696 | perror("send"); | |
697 | return 1; | |
698 | } | |
699 | ||
700 | buf += ret; | |
701 | bytes_left -= ret; | |
9db17354 | 702 | } |
a3e4d330 | 703 | |
8e86c98a | 704 | return 0; |
a3e4d330 JA |
705 | } |
706 | ||
32f18c48 | 707 | static int net_send_header(struct thread_information *tip, unsigned int len) |
8e86c98a JA |
708 | { |
709 | struct blktrace_net_hdr hdr; | |
8e86c98a JA |
710 | |
711 | hdr.magic = BLK_IO_TRACE_MAGIC; | |
22cd0c02 | 712 | strcpy(hdr.buts_name, tip->device->buts_name); |
8e86c98a | 713 | hdr.cpu = tip->cpu; |
22cd0c02 | 714 | hdr.max_cpus = ncpus; |
32f18c48 | 715 | hdr.len = len; |
8e86c98a | 716 | |
32f18c48 JA |
717 | return write_data_net(net_out_fd, &hdr, sizeof(hdr)); |
718 | } | |
8e86c98a | 719 | |
6a752c90 JA |
720 | /* |
721 | * send header with 0 length to signal end-of-run | |
722 | */ | |
723 | static void net_client_send_close(void) | |
724 | { | |
725 | struct blktrace_net_hdr hdr; | |
726 | ||
727 | hdr.magic = BLK_IO_TRACE_MAGIC; | |
728 | hdr.cpu = 0; | |
729 | hdr.max_cpus = ncpus; | |
730 | hdr.len = 0; | |
731 | ||
732 | write_data_net(net_out_fd, &hdr, sizeof(hdr)); | |
733 | } | |
734 | ||
32f18c48 JA |
735 | static int flush_subbuf_net(struct thread_information *tip, |
736 | struct tip_subbuf *ts) | |
737 | { | |
738 | if (net_send_header(tip, ts->len)) | |
739 | return 1; | |
22cd0c02 JA |
740 | if (write_data_net(net_out_fd, ts->buf, ts->len)) |
741 | return 1; | |
8e86c98a | 742 | |
f0597a7e | 743 | free(ts->buf); |
8e86c98a JA |
744 | free(ts); |
745 | return 0; | |
746 | } | |
747 | ||
f6fead25 JA |
748 | static int net_sendfile(struct thread_information *tip, struct tip_subbuf *ts) |
749 | { | |
11629347 JA |
750 | int ret = sendfile(net_out_fd, tip->fd, NULL, ts->len); |
751 | ||
752 | if (ret < 0) { | |
753 | perror("sendfile"); | |
754 | return 1; | |
755 | } else if (ret < (int) ts->len) { | |
756 | fprintf(stderr, "short sendfile send (%d of %d)\n", ret, ts->len); | |
757 | return 1; | |
758 | } | |
759 | ||
760 | return 0; | |
761 | } | |
762 | ||
32f18c48 JA |
763 | static int flush_subbuf_sendfile(struct thread_information *tip, |
764 | struct tip_subbuf *ts) | |
765 | { | |
bcbeb60f | 766 | int ret = 1; |
18eed2a7 JA |
767 | |
768 | /* | |
769 | * currently we cannot use sendfile() on the last bytes read, as they | |
770 | * may not be a full subbuffer. get_subbuf_sendfile() falls back to | |
771 | * the read approach for those, so use send() to ship them out | |
772 | */ | |
773 | if (ts->buf) | |
774 | return flush_subbuf_net(tip, ts); | |
11eedd9b | 775 | |
f6fead25 | 776 | if (net_send_header(tip, ts->len)) |
11629347 | 777 | goto err; |
f6fead25 | 778 | if (net_sendfile(tip, ts)) |
11629347 | 779 | goto err; |
32f18c48 | 780 | |
f6fead25 | 781 | tip->data_read += ts->len; |
e076d33b JA |
782 | tip->ofile_offset += buf_size; |
783 | ret = 0; | |
11629347 JA |
784 | err: |
785 | tip->sendfile_pending--; | |
32f18c48 | 786 | free(ts); |
11629347 | 787 | return ret; |
32f18c48 JA |
788 | } |
789 | ||
8e86c98a JA |
790 | static int write_data(struct thread_information *tip, void *buf, |
791 | unsigned int buf_len) | |
8a43bac5 | 792 | { |
7126171a | 793 | int ret; |
8a43bac5 | 794 | |
6480258a JA |
795 | if (!buf_len) |
796 | return 0; | |
797 | ||
7126171a JA |
798 | while (1) { |
799 | ret = fwrite(buf, buf_len, 1, tip->ofile); | |
007c233c | 800 | if (ret == 1) |
8a43bac5 JA |
801 | break; |
802 | ||
db6fe5bc JA |
803 | if (ret < 0) { |
804 | perror("write"); | |
805 | return 1; | |
8a43bac5 | 806 | } |
d0ca268b JA |
807 | } |
808 | ||
9db17354 | 809 | if (tip->ofile_stdout) |
7126171a JA |
810 | fflush(tip->ofile); |
811 | ||
8a43bac5 JA |
812 | return 0; |
813 | } | |
814 | ||
8e86c98a JA |
815 | static int flush_subbuf_file(struct thread_information *tip, |
816 | struct tip_subbuf *ts) | |
8a43bac5 | 817 | { |
9db17354 JA |
818 | unsigned int offset = 0; |
819 | struct blk_io_trace *t; | |
820 | int pdu_len, events = 0; | |
8a43bac5 | 821 | |
9db17354 | 822 | /* |
7de86b12 | 823 | * surplus from last run |
9db17354 | 824 | */ |
7de86b12 AB |
825 | if (tip->leftover_ts) { |
826 | struct tip_subbuf *prev_ts = tip->leftover_ts; | |
827 | ||
9e8b753c | 828 | if (prev_ts->len + ts->len > prev_ts->max_len) { |
7de86b12 AB |
829 | prev_ts->max_len += ts->len; |
830 | prev_ts->buf = realloc(prev_ts->buf, prev_ts->max_len); | |
831 | } | |
832 | ||
9e8b753c | 833 | memcpy(prev_ts->buf + prev_ts->len, ts->buf, ts->len); |
7de86b12 AB |
834 | prev_ts->len += ts->len; |
835 | ||
836 | free(ts->buf); | |
837 | free(ts); | |
838 | ||
839 | ts = prev_ts; | |
840 | tip->leftover_ts = NULL; | |
9db17354 | 841 | } |
d0ca268b | 842 | |
9db17354 JA |
843 | while (offset + sizeof(*t) <= ts->len) { |
844 | t = ts->buf + offset; | |
3a9d6c13 | 845 | |
9cfa6c2b AB |
846 | if (verify_trace(t)) { |
847 | write_data(tip, ts->buf, offset); | |
9db17354 | 848 | return -1; |
9cfa6c2b | 849 | } |
3a9d6c13 | 850 | |
9db17354 | 851 | pdu_len = t->pdu_len; |
3a9d6c13 | 852 | |
9db17354 | 853 | if (offset + sizeof(*t) + pdu_len > ts->len) |
3a9d6c13 | 854 | break; |
4b5db44a | 855 | |
9db17354 JA |
856 | offset += sizeof(*t) + pdu_len; |
857 | tip->events_processed++; | |
b7106311 | 858 | tip->data_read += sizeof(*t) + pdu_len; |
9db17354 | 859 | events++; |
3a9d6c13 JA |
860 | } |
861 | ||
9cfa6c2b AB |
862 | if (write_data(tip, ts->buf, offset)) |
863 | return -1; | |
864 | ||
3a9d6c13 | 865 | /* |
9db17354 | 866 | * leftover bytes, save them for next time |
3a9d6c13 | 867 | */ |
9db17354 | 868 | if (offset != ts->len) { |
7de86b12 | 869 | tip->leftover_ts = ts; |
9e8b753c JA |
870 | ts->len -= offset; |
871 | memmove(ts->buf, ts->buf + offset, ts->len); | |
7de86b12 AB |
872 | } else { |
873 | free(ts->buf); | |
874 | free(ts); | |
9db17354 | 875 | } |
4b5db44a | 876 | |
9db17354 | 877 | return events; |
4b5db44a JA |
878 | } |
879 | ||
9db17354 | 880 | static int write_tip_events(struct thread_information *tip) |
d5396421 | 881 | { |
21f55651 | 882 | struct tip_subbuf *ts = subbuf_fifo_dequeue(tip); |
d5396421 | 883 | |
0cc7d25e JA |
884 | if (ts) |
885 | return tip->flush_subbuf(tip, ts); | |
91816d54 | 886 | |
9db17354 | 887 | return 0; |
91816d54 JA |
888 | } |
889 | ||
9db17354 JA |
890 | /* |
891 | * scans the tips we know and writes out the subbuffers we accumulate | |
892 | */ | |
893 | static void get_and_write_events(void) | |
d0ca268b | 894 | { |
9db17354 JA |
895 | struct device_information *dip; |
896 | struct thread_information *tip; | |
27223f19 | 897 | int i, j, events, ret, tips_running; |
d0ca268b | 898 | |
9db17354 JA |
899 | while (!is_done()) { |
900 | events = 0; | |
d0ca268b | 901 | |
9db17354 JA |
902 | for_each_dip(dip, i) { |
903 | for_each_tip(dip, tip, j) { | |
904 | ret = write_tip_events(tip); | |
905 | if (ret > 0) | |
906 | events += ret; | |
907 | } | |
908 | } | |
d0ca268b | 909 | |
9db17354 JA |
910 | if (!events) |
911 | usleep(10); | |
d0ca268b JA |
912 | } |
913 | ||
a3e4d330 | 914 | /* |
9db17354 | 915 | * reap stored events |
a3e4d330 | 916 | */ |
9db17354 JA |
917 | do { |
918 | events = 0; | |
27223f19 | 919 | tips_running = 0; |
9db17354 JA |
920 | for_each_dip(dip, i) { |
921 | for_each_tip(dip, tip, j) { | |
922 | ret = write_tip_events(tip); | |
923 | if (ret > 0) | |
924 | events += ret; | |
27223f19 | 925 | tips_running += !tip->exited; |
9db17354 | 926 | } |
69e65a9e | 927 | } |
9db17354 | 928 | usleep(10); |
27223f19 | 929 | } while (events || tips_running); |
d0ca268b JA |
930 | } |
931 | ||
b7106311 JA |
932 | static void wait_for_threads(void) |
933 | { | |
934 | /* | |
8e86c98a JA |
935 | * for piped or network output, poll and fetch data for writeout. |
936 | * for files, we just wait around for trace threads to exit | |
b7106311 | 937 | */ |
8e86c98a JA |
938 | if ((output_name && !strcmp(output_name, "-")) || |
939 | net_mode == Net_client) | |
b7106311 JA |
940 | get_and_write_events(); |
941 | else { | |
942 | struct device_information *dip; | |
943 | struct thread_information *tip; | |
944 | int i, j, tips_running; | |
945 | ||
946 | do { | |
947 | tips_running = 0; | |
948 | usleep(1000); | |
949 | ||
950 | for_each_dip(dip, i) | |
951 | for_each_tip(dip, tip, j) | |
952 | tips_running += !tip->exited; | |
953 | } while (tips_running); | |
954 | } | |
6a752c90 JA |
955 | |
956 | if (net_mode == Net_client) | |
957 | net_client_send_close(); | |
b7106311 JA |
958 | } |
959 | ||
e3bf54d8 JA |
960 | static int fill_ofname(struct thread_information *tip, char *dst, |
961 | char *buts_name) | |
8e86c98a | 962 | { |
e3bf54d8 | 963 | struct stat sb; |
8e86c98a | 964 | int len = 0; |
e3bf54d8 | 965 | time_t t; |
8e86c98a JA |
966 | |
967 | if (output_dir) | |
968 | len = sprintf(dst, "%s/", output_dir); | |
969 | ||
e3bf54d8 JA |
970 | if (net_mode == Net_server) { |
971 | len += sprintf(dst + len, "%s-", inet_ntoa(tip->cl_in_addr)); | |
972 | time(&t); | |
973 | len += strftime(dst + len, 64, "%F-%T/", gmtime(&t)); | |
974 | } | |
975 | ||
976 | if (stat(dst, &sb) < 0) { | |
977 | if (errno != ENOENT) { | |
978 | perror("stat"); | |
979 | return 1; | |
980 | } | |
981 | if (mkdir(dst, 0755) < 0) { | |
982 | perror(dst); | |
983 | fprintf(stderr, "Can't make output dir\n"); | |
984 | return 1; | |
985 | } | |
986 | } | |
987 | ||
8e86c98a | 988 | if (output_name) |
e3bf54d8 | 989 | sprintf(dst + len, "%s.blktrace.%d", output_name, tip->cpu); |
8e86c98a | 990 | else |
e3bf54d8 JA |
991 | sprintf(dst + len, "%s.blktrace.%d", buts_name, tip->cpu); |
992 | ||
993 | return 0; | |
8e86c98a JA |
994 | } |
995 | ||
0cc7d25e JA |
996 | static void fill_ops(struct thread_information *tip) |
997 | { | |
998 | /* | |
999 | * setup ops | |
1000 | */ | |
32f18c48 | 1001 | if (net_mode == Net_client) { |
36808255 | 1002 | if (net_use_sendfile) { |
32f18c48 JA |
1003 | tip->get_subbuf = get_subbuf_sendfile; |
1004 | tip->flush_subbuf = flush_subbuf_sendfile; | |
1005 | } else { | |
1006 | tip->get_subbuf = get_subbuf; | |
1007 | tip->flush_subbuf = flush_subbuf_net; | |
1008 | } | |
1009 | } else { | |
1010 | if (tip->ofile_mmap) | |
1011 | tip->get_subbuf = mmap_subbuf; | |
1012 | else | |
1013 | tip->get_subbuf = get_subbuf; | |
0cc7d25e | 1014 | |
0cc7d25e | 1015 | tip->flush_subbuf = flush_subbuf_file; |
32f18c48 JA |
1016 | } |
1017 | ||
0cc7d25e JA |
1018 | if (net_mode == Net_server) |
1019 | tip->read_data = read_data_net; | |
1020 | else | |
1021 | tip->read_data = read_data_file; | |
1022 | } | |
1023 | ||
ddf22842 JA |
1024 | static int tip_open_output(struct device_information *dip, |
1025 | struct thread_information *tip) | |
d0ca268b | 1026 | { |
ddf22842 | 1027 | int pipeline = output_name && !strcmp(output_name, "-"); |
8e86c98a | 1028 | int mode, vbuf_size; |
e3bf54d8 | 1029 | char op[128]; |
d0ca268b | 1030 | |
ddf22842 JA |
1031 | if (net_mode == Net_client) { |
1032 | tip->ofile = NULL; | |
1033 | tip->ofile_stdout = 0; | |
1034 | tip->ofile_mmap = 0; | |
0c0b75b4 | 1035 | goto done; |
ddf22842 JA |
1036 | } else if (pipeline) { |
1037 | tip->ofile = fdopen(STDOUT_FILENO, "w"); | |
1038 | tip->ofile_stdout = 1; | |
1039 | tip->ofile_mmap = 0; | |
1040 | mode = _IOLBF; | |
1041 | vbuf_size = 512; | |
1042 | } else { | |
e3bf54d8 JA |
1043 | if (fill_ofname(tip, op, dip->buts_name)) |
1044 | return 1; | |
ddf22842 JA |
1045 | tip->ofile = fopen(op, "w+"); |
1046 | tip->ofile_stdout = 0; | |
1047 | tip->ofile_mmap = 1; | |
1048 | mode = _IOFBF; | |
1049 | vbuf_size = OFILE_BUF; | |
1050 | } | |
d5396421 | 1051 | |
0c0b75b4 | 1052 | if (tip->ofile == NULL) { |
ddf22842 JA |
1053 | perror(op); |
1054 | return 1; | |
1055 | } | |
d5396421 | 1056 | |
0c0b75b4 JA |
1057 | tip->ofile_buffer = malloc(vbuf_size); |
1058 | if (setvbuf(tip->ofile, tip->ofile_buffer, mode, vbuf_size)) { | |
1059 | perror("setvbuf"); | |
1060 | close_thread(tip); | |
1061 | return 1; | |
ddf22842 JA |
1062 | } |
1063 | ||
0c0b75b4 | 1064 | done: |
ddf22842 JA |
1065 | fill_ops(tip); |
1066 | return 0; | |
1067 | } | |
007c233c | 1068 | |
ddf22842 JA |
1069 | static int start_threads(struct device_information *dip) |
1070 | { | |
1071 | struct thread_information *tip; | |
1072 | int j; | |
1073 | ||
1074 | for_each_tip(dip, tip, j) { | |
1075 | tip->cpu = j; | |
1076 | tip->device = dip; | |
1077 | tip->events_processed = 0; | |
11eedd9b | 1078 | tip->fd = -1; |
ddf22842 JA |
1079 | memset(&tip->fifo, 0, sizeof(tip->fifo)); |
1080 | tip->leftover_ts = NULL; | |
1081 | ||
1082 | if (tip_open_output(dip, tip)) | |
1083 | return 1; | |
0cc7d25e | 1084 | |
9db17354 | 1085 | if (pthread_create(&tip->thread, NULL, thread_main, tip)) { |
e7c9f3ff | 1086 | perror("pthread_create"); |
007c233c | 1087 | close_thread(tip); |
e7c9f3ff | 1088 | return 1; |
d0ca268b JA |
1089 | } |
1090 | } | |
1091 | ||
e7c9f3ff | 1092 | return 0; |
d0ca268b JA |
1093 | } |
1094 | ||
e7c9f3ff | 1095 | static void stop_threads(struct device_information *dip) |
3aabcd89 | 1096 | { |
e7c9f3ff | 1097 | struct thread_information *tip; |
91816d54 | 1098 | unsigned long ret; |
007c233c JA |
1099 | int i; |
1100 | ||
9db17354 | 1101 | for_each_tip(dip, tip, i) { |
91816d54 | 1102 | (void) pthread_join(tip->thread, (void *) &ret); |
9db17354 JA |
1103 | close_thread(tip); |
1104 | } | |
3aabcd89 JA |
1105 | } |
1106 | ||
e7c9f3ff | 1107 | static void stop_all_threads(void) |
72ca8801 | 1108 | { |
e7c9f3ff | 1109 | struct device_information *dip; |
72ca8801 NS |
1110 | int i; |
1111 | ||
99c1f5ab | 1112 | for_each_dip(dip, i) |
e7c9f3ff NS |
1113 | stop_threads(dip); |
1114 | } | |
1115 | ||
1116 | static void stop_all_tracing(void) | |
1117 | { | |
1118 | struct device_information *dip; | |
91816d54 | 1119 | int i; |
007c233c | 1120 | |
91816d54 | 1121 | for_each_dip(dip, i) |
e7c9f3ff | 1122 | stop_trace(dip); |
72ca8801 NS |
1123 | } |
1124 | ||
1125 | static void exit_trace(int status) | |
1126 | { | |
eb3c8108 JA |
1127 | if (!is_trace_stopped()) { |
1128 | trace_stopped = 1; | |
1129 | stop_all_threads(); | |
1130 | stop_all_tracing(); | |
1131 | } | |
1132 | ||
72ca8801 NS |
1133 | exit(status); |
1134 | } | |
1135 | ||
e7c9f3ff NS |
1136 | static int resize_devices(char *path) |
1137 | { | |
1138 | int size = (ndevs + 1) * sizeof(struct device_information); | |
1139 | ||
1140 | device_information = realloc(device_information, size); | |
1141 | if (!device_information) { | |
1142 | fprintf(stderr, "Out of memory, device %s (%d)\n", path, size); | |
1143 | return 1; | |
1144 | } | |
1145 | device_information[ndevs].path = path; | |
1146 | ndevs++; | |
1147 | return 0; | |
1148 | } | |
1149 | ||
1150 | static int open_devices(void) | |
d0ca268b | 1151 | { |
e7c9f3ff | 1152 | struct device_information *dip; |
d0ca268b | 1153 | int i; |
d0ca268b | 1154 | |
99c1f5ab | 1155 | for_each_dip(dip, i) { |
cf9208ea | 1156 | dip->fd = open(dip->path, O_RDONLY | O_NONBLOCK); |
e7c9f3ff NS |
1157 | if (dip->fd < 0) { |
1158 | perror(dip->path); | |
1159 | return 1; | |
1160 | } | |
1161 | } | |
99c1f5ab | 1162 | |
e7c9f3ff NS |
1163 | return 0; |
1164 | } | |
1165 | ||
1166 | static int start_devices(void) | |
1167 | { | |
1168 | struct device_information *dip; | |
1169 | int i, j, size; | |
1170 | ||
1171 | size = ncpus * sizeof(struct thread_information); | |
1172 | thread_information = malloc(size * ndevs); | |
1173 | if (!thread_information) { | |
1174 | fprintf(stderr, "Out of memory, threads (%d)\n", size * ndevs); | |
1175 | return 1; | |
1176 | } | |
d5396421 | 1177 | |
99c1f5ab | 1178 | for_each_dip(dip, i) { |
e7c9f3ff NS |
1179 | if (start_trace(dip)) { |
1180 | close(dip->fd); | |
1181 | fprintf(stderr, "Failed to start trace on %s\n", | |
1182 | dip->path); | |
1183 | break; | |
1184 | } | |
1185 | } | |
99c1f5ab | 1186 | |
e7c9f3ff | 1187 | if (i != ndevs) { |
99c1f5ab | 1188 | __for_each_dip(dip, j, i) |
e7c9f3ff | 1189 | stop_trace(dip); |
99c1f5ab | 1190 | |
e7c9f3ff NS |
1191 | return 1; |
1192 | } | |
1193 | ||
99c1f5ab | 1194 | for_each_dip(dip, i) { |
e7c9f3ff NS |
1195 | dip->threads = thread_information + (i * ncpus); |
1196 | if (start_threads(dip)) { | |
1197 | fprintf(stderr, "Failed to start worker threads\n"); | |
1198 | break; | |
1199 | } | |
1200 | } | |
99c1f5ab | 1201 | |
e7c9f3ff | 1202 | if (i != ndevs) { |
99c1f5ab | 1203 | __for_each_dip(dip, j, i) |
e7c9f3ff | 1204 | stop_threads(dip); |
99c1f5ab | 1205 | for_each_dip(dip, i) |
e7c9f3ff | 1206 | stop_trace(dip); |
99c1f5ab | 1207 | |
e7c9f3ff | 1208 | return 1; |
d0ca268b JA |
1209 | } |
1210 | ||
e7c9f3ff | 1211 | return 0; |
d0ca268b JA |
1212 | } |
1213 | ||
e7c9f3ff NS |
1214 | static void show_stats(void) |
1215 | { | |
e7c9f3ff NS |
1216 | struct device_information *dip; |
1217 | struct thread_information *tip; | |
b7106311 | 1218 | unsigned long long events_processed, data_read; |
eb3c8108 | 1219 | unsigned long total_drops; |
2f903295 | 1220 | int i, j, no_stdout = 0; |
eb3c8108 JA |
1221 | |
1222 | if (is_stat_shown()) | |
1223 | return; | |
1224 | ||
2f903295 JA |
1225 | if (output_name && !strcmp(output_name, "-")) |
1226 | no_stdout = 1; | |
1227 | ||
eb3c8108 | 1228 | stat_shown = 1; |
428683db | 1229 | |
56070ea4 | 1230 | total_drops = 0; |
99c1f5ab | 1231 | for_each_dip(dip, i) { |
2f903295 | 1232 | if (!no_stdout) |
56070ea4 | 1233 | printf("Device: %s\n", dip->path); |
e7c9f3ff | 1234 | events_processed = 0; |
b7106311 | 1235 | data_read = 0; |
99c1f5ab | 1236 | for_each_tip(dip, tip, j) { |
2f903295 | 1237 | if (!no_stdout) |
b7106311 JA |
1238 | printf(" CPU%3d: %20lu events, %8llu KiB data\n", |
1239 | tip->cpu, tip->events_processed, | |
54824c20 | 1240 | (tip->data_read + 1023) >> 10); |
e7c9f3ff | 1241 | events_processed += tip->events_processed; |
b7106311 | 1242 | data_read += tip->data_read; |
e7c9f3ff | 1243 | } |
eb3c8108 | 1244 | total_drops += dip->drop_count; |
2f903295 | 1245 | if (!no_stdout) |
b7106311 JA |
1246 | printf(" Total: %20llu events (dropped %lu), %8llu KiB data\n", |
1247 | events_processed, dip->drop_count, | |
18d8437d | 1248 | (data_read + 1023) >> 10); |
e7c9f3ff | 1249 | } |
56070ea4 JA |
1250 | |
1251 | if (total_drops) | |
1252 | fprintf(stderr, "You have dropped events, consider using a larger buffer size (-b)\n"); | |
e7c9f3ff | 1253 | } |
52724a0e | 1254 | |
e3bf54d8 JA |
1255 | static struct device_information *net_get_dip(char *buts_name, |
1256 | struct in_addr *cl_in_addr) | |
8e86c98a | 1257 | { |
22cd0c02 | 1258 | struct device_information *dip; |
8e86c98a JA |
1259 | int i; |
1260 | ||
22cd0c02 JA |
1261 | for (i = 0; i < ndevs; i++) { |
1262 | dip = &device_information[i]; | |
8e86c98a | 1263 | |
22cd0c02 JA |
1264 | if (!strcmp(dip->buts_name, buts_name)) |
1265 | return dip; | |
8e86c98a JA |
1266 | } |
1267 | ||
22cd0c02 JA |
1268 | device_information = realloc(device_information, (ndevs + 1) * sizeof(*dip)); |
1269 | dip = &device_information[ndevs]; | |
921b05fe JA |
1270 | memset(dip, 0, sizeof(*dip)); |
1271 | dip->fd = -1; | |
22cd0c02 | 1272 | strcpy(dip->buts_name, buts_name); |
921b05fe | 1273 | dip->path = strdup(buts_name); |
22cd0c02 JA |
1274 | ndevs++; |
1275 | dip->threads = malloc(ncpus * sizeof(struct thread_information)); | |
1276 | memset(dip->threads, 0, ncpus * sizeof(struct thread_information)); | |
1277 | ||
1278 | /* | |
1279 | * open all files | |
1280 | */ | |
1281 | for (i = 0; i < ncpus; i++) { | |
1282 | struct thread_information *tip = &dip->threads[i]; | |
8e86c98a | 1283 | |
22cd0c02 | 1284 | tip->cpu = i; |
22cd0c02 | 1285 | tip->device = dip; |
1366e53a | 1286 | tip->fd = -1; |
e3bf54d8 | 1287 | tip->cl_in_addr = *cl_in_addr; |
8e86c98a | 1288 | |
ddf22842 | 1289 | if (tip_open_output(dip, tip)) |
22cd0c02 | 1290 | return NULL; |
8e86c98a JA |
1291 | } |
1292 | ||
22cd0c02 JA |
1293 | return dip; |
1294 | } | |
1295 | ||
e3bf54d8 JA |
1296 | static struct thread_information *net_get_tip(struct blktrace_net_hdr *bnh, |
1297 | struct in_addr *cl_in_addr) | |
22cd0c02 JA |
1298 | { |
1299 | struct device_information *dip; | |
1300 | ||
1301 | ncpus = bnh->max_cpus; | |
e3bf54d8 | 1302 | dip = net_get_dip(bnh->buts_name, cl_in_addr); |
22cd0c02 | 1303 | return &dip->threads[bnh->cpu]; |
8e86c98a JA |
1304 | } |
1305 | ||
1306 | static int net_get_header(struct blktrace_net_hdr *bnh) | |
1307 | { | |
1308 | int fl = fcntl(net_in_fd, F_GETFL); | |
1309 | int bytes_left, ret; | |
1310 | void *p = bnh; | |
1311 | ||
1312 | fcntl(net_in_fd, F_SETFL, fl | O_NONBLOCK); | |
1313 | bytes_left = sizeof(*bnh); | |
1314 | while (bytes_left && !is_done()) { | |
1315 | ret = recv(net_in_fd, p, bytes_left, MSG_WAITALL); | |
1316 | if (ret < 0) { | |
1317 | if (errno != EAGAIN) { | |
1318 | perror("recv header"); | |
1319 | return 1; | |
1320 | } | |
1321 | usleep(100); | |
1322 | continue; | |
1323 | } else if (!ret) { | |
1324 | usleep(100); | |
1325 | continue; | |
1326 | } else { | |
1327 | p += ret; | |
1328 | bytes_left -= ret; | |
1329 | } | |
1330 | } | |
1331 | fcntl(net_in_fd, F_SETFL, fl & ~O_NONBLOCK); | |
227f89ff | 1332 | return bytes_left; |
8e86c98a JA |
1333 | } |
1334 | ||
e3bf54d8 | 1335 | static int net_server_loop(struct in_addr *cl_in_addr) |
8e86c98a JA |
1336 | { |
1337 | struct thread_information *tip; | |
1338 | struct blktrace_net_hdr bnh; | |
1339 | ||
1340 | if (net_get_header(&bnh)) | |
1341 | return 1; | |
1342 | ||
1343 | if (data_is_native == -1 && check_data_endianness(bnh.magic)) { | |
1344 | fprintf(stderr, "server: received data is bad\n"); | |
1345 | return 1; | |
1346 | } | |
1347 | ||
1348 | if (!data_is_native) { | |
227f89ff | 1349 | bnh.magic = be32_to_cpu(bnh.magic); |
8e86c98a JA |
1350 | bnh.cpu = be32_to_cpu(bnh.cpu); |
1351 | bnh.len = be32_to_cpu(bnh.len); | |
1352 | } | |
1353 | ||
227f89ff JA |
1354 | if ((bnh.magic & 0xffffff00) != BLK_IO_TRACE_MAGIC) { |
1355 | fprintf(stderr, "server: bad data magic\n"); | |
1356 | return 1; | |
1357 | } | |
1358 | ||
6a752c90 JA |
1359 | /* |
1360 | * len == 0 means that the other end signalled end-of-run | |
1361 | */ | |
1362 | if (!bnh.len) { | |
1363 | fprintf(stderr, "server: end of run\n"); | |
1364 | return 1; | |
1365 | } | |
1366 | ||
e3bf54d8 | 1367 | tip = net_get_tip(&bnh, cl_in_addr); |
8e86c98a JA |
1368 | if (!tip) |
1369 | return 1; | |
1370 | ||
1371 | if (mmap_subbuf(tip, bnh.len)) | |
1372 | return 1; | |
1373 | ||
1374 | return 0; | |
1375 | } | |
1376 | ||
659bcc3f JA |
1377 | static int get_connection(int fd, struct sockaddr_in *addr) |
1378 | { | |
1379 | struct pollfd pfd = { .fd = fd, .events = POLLIN }; | |
1380 | socklen_t socklen; | |
1381 | ||
1382 | printf("blktrace: waiting for incoming connection...\n"); | |
1383 | ||
1384 | if (poll(&pfd, 1, -1) < 0) { | |
1385 | perror("poll for connection"); | |
1386 | return 1; | |
1387 | } | |
1388 | if ((pfd.revents & POLLIN) == 0) | |
1389 | return 1; | |
1390 | ||
1391 | socklen = sizeof(*addr); | |
1392 | net_in_fd = accept(fd, (struct sockaddr *) addr, &socklen); | |
1393 | if (net_in_fd < 0) { | |
1394 | perror("accept"); | |
1395 | return 1; | |
1396 | } | |
1397 | ||
1398 | printf("blktrace: connection from %s\n", inet_ntoa(addr->sin_addr)); | |
1399 | return 0; | |
1400 | } | |
1401 | ||
8e86c98a JA |
1402 | /* |
1403 | * Start here when we are in server mode - just fetch data from the network | |
1404 | * and dump to files | |
1405 | */ | |
1406 | static int net_server(void) | |
1407 | { | |
898bbd3b JA |
1408 | struct device_information *dip; |
1409 | struct thread_information *tip; | |
8e86c98a | 1410 | struct sockaddr_in addr; |
22cd0c02 | 1411 | int fd, opt, i, j; |
8e86c98a JA |
1412 | |
1413 | fd = socket(AF_INET, SOCK_STREAM, 0); | |
1414 | if (fd < 0) { | |
1415 | perror("server: socket"); | |
1416 | return 1; | |
1417 | } | |
1418 | ||
1419 | opt = 1; | |
1420 | if (setsockopt(fd, SOL_SOCKET, SO_REUSEADDR, &opt, sizeof(opt)) < 0) { | |
1421 | perror("setsockopt"); | |
1422 | return 1; | |
1423 | } | |
1424 | ||
1425 | memset(&addr, 0, sizeof(addr)); | |
1426 | addr.sin_family = AF_INET; | |
1427 | addr.sin_addr.s_addr = htonl(INADDR_ANY); | |
1428 | addr.sin_port = htons(net_port); | |
1429 | ||
1430 | if (bind(fd, (struct sockaddr *) &addr, sizeof(addr)) < 0) { | |
1431 | perror("bind"); | |
1432 | return 1; | |
1433 | } | |
1434 | ||
1435 | if (listen(fd, 1) < 0) { | |
1436 | perror("listen"); | |
1437 | return 1; | |
1438 | } | |
1439 | ||
6a752c90 | 1440 | repeat: |
659bcc3f JA |
1441 | if (get_connection(fd, &addr)) |
1442 | return 0; | |
8e86c98a JA |
1443 | |
1444 | while (!is_done()) { | |
e3bf54d8 | 1445 | if (net_server_loop(&addr.sin_addr)) |
8e86c98a JA |
1446 | break; |
1447 | } | |
1448 | ||
898bbd3b JA |
1449 | for_each_dip(dip, i) |
1450 | for_each_tip(dip, tip, j) | |
1451 | tip_ftrunc_final(tip); | |
8e86c98a | 1452 | |
410d7c62 | 1453 | show_stats(); |
6a752c90 JA |
1454 | |
1455 | if (is_done()) | |
1456 | return 0; | |
1457 | ||
898bbd3b JA |
1458 | /* |
1459 | * cleanup for next run | |
1460 | */ | |
1461 | for_each_dip(dip, i) { | |
1462 | for_each_tip(dip, tip, j) | |
1463 | fclose(tip->ofile); | |
1464 | ||
1465 | free(dip->threads); | |
921b05fe | 1466 | free(dip->path); |
898bbd3b JA |
1467 | } |
1468 | ||
1469 | free(device_information); | |
1470 | device_information = NULL; | |
1471 | ncpus = ndevs = 0; | |
b46a0342 JA |
1472 | |
1473 | close(net_in_fd); | |
1474 | net_in_fd = -1; | |
dbfbd6db | 1475 | stat_shown = 0; |
6a752c90 | 1476 | goto repeat; |
8e86c98a JA |
1477 | } |
1478 | ||
1479 | /* | |
1480 | * Setup outgoing network connection where we will transmit data | |
1481 | */ | |
1482 | static int net_setup_client(void) | |
1483 | { | |
1484 | struct sockaddr_in addr; | |
1485 | int fd; | |
1486 | ||
1487 | fd = socket(AF_INET, SOCK_STREAM, 0); | |
1488 | if (fd < 0) { | |
1489 | perror("client: socket"); | |
1490 | return 1; | |
1491 | } | |
1492 | ||
1493 | memset(&addr, 0, sizeof(addr)); | |
1494 | addr.sin_family = AF_INET; | |
1495 | addr.sin_port = htons(net_port); | |
1496 | ||
1497 | if (inet_aton(hostname, &addr.sin_addr) != 1) { | |
1498 | struct hostent *hent = gethostbyname(hostname); | |
1499 | if (!hent) { | |
1500 | perror("gethostbyname"); | |
1501 | return 1; | |
1502 | } | |
1503 | ||
1504 | memcpy(&addr.sin_addr, hent->h_addr, 4); | |
1505 | strcpy(hostname, hent->h_name); | |
1506 | } | |
1507 | ||
1508 | printf("blktrace: connecting to %s\n", hostname); | |
1509 | ||
1510 | if (connect(fd, (struct sockaddr *) &addr, sizeof(addr)) < 0) { | |
1511 | perror("client: connect"); | |
1512 | return 1; | |
1513 | } | |
1514 | ||
1515 | printf("blktrace: connected!\n"); | |
1516 | net_out_fd = fd; | |
1517 | return 0; | |
1518 | } | |
1519 | ||
52724a0e JA |
1520 | static char usage_str[] = \ |
1521 | "-d <dev> [ -r relay path ] [ -o <output> ] [-k ] [ -w time ]\n" \ | |
1522 | "[ -a action ] [ -A action mask ] [ -v ]\n\n" \ | |
1523 | "\t-d Use specified device. May also be given last after options\n" \ | |
1524 | "\t-r Path to mounted relayfs, defaults to /relay\n" \ | |
1525 | "\t-o File(s) to send output to\n" \ | |
d1d7f15f | 1526 | "\t-D Directory to prepend to output file names\n" \ |
52724a0e JA |
1527 | "\t-k Kill a running trace\n" \ |
1528 | "\t-w Stop after defined time, in seconds\n" \ | |
1529 | "\t-a Only trace specified actions. See documentation\n" \ | |
1530 | "\t-A Give trace mask as a single value. See documentation\n" \ | |
129aa440 JA |
1531 | "\t-b Sub buffer size in KiB\n" \ |
1532 | "\t-n Number of sub buffers\n" \ | |
f531b94d JA |
1533 | "\t-l Run in network listen mode (blktrace server)\n" \ |
1534 | "\t-h Run in network client mode, connecting to the given host\n" \ | |
1535 | "\t-p Network port to use (default 8462)\n" \ | |
1536 | "\t-s Make the network client use sendfile() to transfer data\n" \ | |
1537 | "\t-V Print program version info\n\n"; | |
52724a0e | 1538 | |
ee1f4158 NS |
1539 | static void show_usage(char *program) |
1540 | { | |
52724a0e | 1541 | fprintf(stderr, "Usage: %s %s %s",program, blktrace_version, usage_str); |
ee1f4158 | 1542 | } |
d0ca268b JA |
1543 | |
1544 | int main(int argc, char *argv[]) | |
1545 | { | |
5270dddd | 1546 | static char default_relay_path[] = "/relay"; |
e3e74029 | 1547 | struct statfs st; |
d39c04ca | 1548 | int i, c; |
ece238a6 | 1549 | int stop_watch = 0; |
d39c04ca AB |
1550 | int act_mask_tmp = 0; |
1551 | ||
1552 | while ((c = getopt_long(argc, argv, S_OPTS, l_opts, NULL)) >= 0) { | |
1553 | switch (c) { | |
1554 | case 'a': | |
1555 | i = find_mask_map(optarg); | |
1556 | if (i < 0) { | |
ab197ca7 | 1557 | fprintf(stderr,"Invalid action mask %s\n", |
d39c04ca | 1558 | optarg); |
7425d456 | 1559 | return 1; |
d39c04ca AB |
1560 | } |
1561 | act_mask_tmp |= i; | |
1562 | break; | |
1563 | ||
1564 | case 'A': | |
98f8386b AB |
1565 | if ((sscanf(optarg, "%x", &i) != 1) || |
1566 | !valid_act_opt(i)) { | |
d39c04ca | 1567 | fprintf(stderr, |
ab197ca7 | 1568 | "Invalid set action mask %s/0x%x\n", |
d39c04ca | 1569 | optarg, i); |
7425d456 | 1570 | return 1; |
d39c04ca AB |
1571 | } |
1572 | act_mask_tmp = i; | |
1573 | break; | |
d0ca268b | 1574 | |
d39c04ca | 1575 | case 'd': |
e7c9f3ff NS |
1576 | if (resize_devices(optarg) != 0) |
1577 | return 1; | |
d39c04ca AB |
1578 | break; |
1579 | ||
5270dddd JA |
1580 | case 'r': |
1581 | relay_path = optarg; | |
1582 | break; | |
1583 | ||
d5396421 | 1584 | case 'o': |
66efebf8 | 1585 | output_name = optarg; |
d5396421 | 1586 | break; |
bc39777c JA |
1587 | case 'k': |
1588 | kill_running_trace = 1; | |
1589 | break; | |
ece238a6 NS |
1590 | case 'w': |
1591 | stop_watch = atoi(optarg); | |
1592 | if (stop_watch <= 0) { | |
1593 | fprintf(stderr, | |
1594 | "Invalid stopwatch value (%d secs)\n", | |
1595 | stop_watch); | |
1596 | return 1; | |
1597 | } | |
1598 | break; | |
57ea8602 | 1599 | case 'V': |
52724a0e JA |
1600 | printf("%s version %s\n", argv[0], blktrace_version); |
1601 | return 0; | |
129aa440 | 1602 | case 'b': |
eb3c8108 | 1603 | buf_size = strtoul(optarg, NULL, 10); |
183a0855 | 1604 | if (buf_size <= 0 || buf_size > 16*1024) { |
129aa440 | 1605 | fprintf(stderr, |
eb3c8108 | 1606 | "Invalid buffer size (%lu)\n",buf_size); |
129aa440 JA |
1607 | return 1; |
1608 | } | |
1609 | buf_size <<= 10; | |
1610 | break; | |
1611 | case 'n': | |
eb3c8108 | 1612 | buf_nr = strtoul(optarg, NULL, 10); |
129aa440 JA |
1613 | if (buf_nr <= 0) { |
1614 | fprintf(stderr, | |
eb3c8108 | 1615 | "Invalid buffer nr (%lu)\n", buf_nr); |
129aa440 JA |
1616 | return 1; |
1617 | } | |
1618 | break; | |
d1d7f15f JA |
1619 | case 'D': |
1620 | output_dir = optarg; | |
1621 | break; | |
8e86c98a JA |
1622 | case 'h': |
1623 | net_mode = Net_client; | |
1624 | strcpy(hostname, optarg); | |
1625 | break; | |
1626 | case 'l': | |
1627 | net_mode = Net_server; | |
1628 | break; | |
1629 | case 'p': | |
1630 | net_port = atoi(optarg); | |
1631 | break; | |
32f18c48 | 1632 | case 's': |
f6fead25 | 1633 | net_use_sendfile = 1; |
32f18c48 | 1634 | break; |
d39c04ca | 1635 | default: |
ee1f4158 | 1636 | show_usage(argv[0]); |
7425d456 | 1637 | return 1; |
d39c04ca AB |
1638 | } |
1639 | } | |
1640 | ||
8e86c98a JA |
1641 | setlocale(LC_NUMERIC, "en_US"); |
1642 | ||
1643 | page_size = getpagesize(); | |
1644 | ||
1645 | if (net_mode == Net_server) | |
1646 | return net_server(); | |
1647 | ||
22cd0c02 JA |
1648 | while (optind < argc) { |
1649 | if (resize_devices(argv[optind++]) != 0) | |
1650 | return 1; | |
1651 | } | |
1652 | ||
e7c9f3ff | 1653 | if (ndevs == 0) { |
ee1f4158 | 1654 | show_usage(argv[0]); |
7425d456 | 1655 | return 1; |
d39c04ca AB |
1656 | } |
1657 | ||
5270dddd JA |
1658 | if (!relay_path) |
1659 | relay_path = default_relay_path; | |
1660 | ||
d5396421 | 1661 | if (act_mask_tmp != 0) |
d39c04ca | 1662 | act_mask = act_mask_tmp; |
d0ca268b | 1663 | |
e3e74029 NS |
1664 | if (statfs(relay_path, &st) < 0) { |
1665 | perror("statfs"); | |
1666 | fprintf(stderr,"%s does not appear to be a valid path\n", | |
1667 | relay_path); | |
1668 | return 1; | |
64acacae | 1669 | } else if (st.f_type != (long) RELAYFS_TYPE) { |
e3e74029 | 1670 | fprintf(stderr,"%s does not appear to be a relay filesystem\n", |
d0ca268b | 1671 | relay_path); |
7425d456 | 1672 | return 1; |
d0ca268b JA |
1673 | } |
1674 | ||
e7c9f3ff | 1675 | if (open_devices() != 0) |
7425d456 | 1676 | return 1; |
bc39777c JA |
1677 | |
1678 | if (kill_running_trace) { | |
e7c9f3ff | 1679 | stop_all_traces(); |
7425d456 | 1680 | return 0; |
bc39777c JA |
1681 | } |
1682 | ||
e7c9f3ff NS |
1683 | ncpus = sysconf(_SC_NPROCESSORS_ONLN); |
1684 | if (ncpus < 0) { | |
1685 | fprintf(stderr, "sysconf(_SC_NPROCESSORS_ONLN) failed\n"); | |
7425d456 | 1686 | return 1; |
d0ca268b JA |
1687 | } |
1688 | ||
d0ca268b JA |
1689 | signal(SIGINT, handle_sigint); |
1690 | signal(SIGHUP, handle_sigint); | |
1691 | signal(SIGTERM, handle_sigint); | |
ece238a6 | 1692 | signal(SIGALRM, handle_sigint); |
d0ca268b | 1693 | |
8e86c98a JA |
1694 | if (net_mode == Net_client && net_setup_client()) |
1695 | return 1; | |
1696 | ||
1697 | if (start_devices() != 0) | |
1698 | return 1; | |
1699 | ||
e7c9f3ff | 1700 | atexit(stop_all_tracing); |
830fd65c | 1701 | |
ece238a6 NS |
1702 | if (stop_watch) |
1703 | alarm(stop_watch); | |
1704 | ||
b7106311 | 1705 | wait_for_threads(); |
d0ca268b | 1706 | |
eb3c8108 JA |
1707 | if (!is_trace_stopped()) { |
1708 | trace_stopped = 1; | |
91816d54 JA |
1709 | stop_all_threads(); |
1710 | stop_all_traces(); | |
91816d54 | 1711 | } |
d0ca268b | 1712 | |
eb3c8108 JA |
1713 | show_stats(); |
1714 | ||
d0ca268b JA |
1715 | return 0; |
1716 | } | |
1717 |