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; | |
32f18c48 | 163 | off_t offset; |
9db17354 JA |
164 | }; |
165 | ||
21f55651 JA |
166 | #define FIFO_SIZE (1024) /* should be plenty big! */ |
167 | #define CL_SIZE (128) /* cache line, any bigger? */ | |
168 | ||
169 | struct tip_subbuf_fifo { | |
170 | int tail __attribute__((aligned(CL_SIZE))); | |
171 | int head __attribute__((aligned(CL_SIZE))); | |
172 | struct tip_subbuf *q[FIFO_SIZE]; | |
173 | }; | |
174 | ||
d0ca268b JA |
175 | struct thread_information { |
176 | int cpu; | |
177 | pthread_t thread; | |
b9d4294e JA |
178 | |
179 | int fd; | |
a3e4d330 | 180 | void *fd_buf; |
b9d4294e JA |
181 | char fn[MAXPATHLEN + 64]; |
182 | ||
11eedd9b JA |
183 | int pfd; |
184 | size_t *pfd_buf; | |
185 | ||
e3bf54d8 JA |
186 | struct in_addr cl_in_addr; |
187 | ||
007c233c JA |
188 | FILE *ofile; |
189 | char *ofile_buffer; | |
32f18c48 | 190 | off_t ofile_offset; |
9db17354 | 191 | int ofile_stdout; |
8e86c98a | 192 | int ofile_mmap; |
007c233c | 193 | |
0cc7d25e JA |
194 | int (*get_subbuf)(struct thread_information *, unsigned int); |
195 | int (*flush_subbuf)(struct thread_information *, struct tip_subbuf *); | |
196 | int (*read_data)(struct thread_information *, void *, unsigned int); | |
197 | ||
d0ca268b | 198 | unsigned long events_processed; |
b7106311 | 199 | unsigned long long data_read; |
e7c9f3ff | 200 | struct device_information *device; |
9db17354 JA |
201 | |
202 | int exited; | |
203 | ||
b7106311 JA |
204 | /* |
205 | * piped fifo buffers | |
206 | */ | |
21f55651 | 207 | struct tip_subbuf_fifo fifo; |
7de86b12 | 208 | struct tip_subbuf *leftover_ts; |
b7106311 JA |
209 | |
210 | /* | |
211 | * mmap controlled output files | |
212 | */ | |
213 | unsigned long long fs_size; | |
214 | unsigned long long fs_max_size; | |
215 | unsigned long fs_off; | |
216 | void *fs_buf; | |
217 | unsigned long fs_buf_len; | |
d0ca268b JA |
218 | }; |
219 | ||
e7c9f3ff NS |
220 | struct device_information { |
221 | int fd; | |
222 | char *path; | |
223 | char buts_name[32]; | |
99c1f5ab | 224 | volatile int trace_started; |
eb3c8108 | 225 | unsigned long drop_count; |
e7c9f3ff NS |
226 | struct thread_information *threads; |
227 | }; | |
d0ca268b | 228 | |
e7c9f3ff | 229 | static int ncpus; |
d0ca268b | 230 | static struct thread_information *thread_information; |
e7c9f3ff NS |
231 | static int ndevs; |
232 | static struct device_information *device_information; | |
233 | ||
234 | /* command line option globals */ | |
235 | static char *relay_path; | |
d5396421 | 236 | static char *output_name; |
d1d7f15f | 237 | static char *output_dir; |
5c86134e | 238 | static int act_mask = ~0U; |
bc39777c | 239 | static int kill_running_trace; |
eb3c8108 JA |
240 | static unsigned long buf_size = BUF_SIZE; |
241 | static unsigned long buf_nr = BUF_NR; | |
b7106311 | 242 | static unsigned int page_size; |
d39c04ca | 243 | |
e7c9f3ff NS |
244 | #define is_done() (*(volatile int *)(&done)) |
245 | static volatile int done; | |
246 | ||
eb3c8108 JA |
247 | #define is_trace_stopped() (*(volatile int *)(&trace_stopped)) |
248 | static volatile int trace_stopped; | |
249 | ||
250 | #define is_stat_shown() (*(volatile int *)(&stat_shown)) | |
251 | static volatile int stat_shown; | |
a3e4d330 | 252 | |
8e86c98a JA |
253 | int data_is_native = -1; |
254 | ||
72ca8801 NS |
255 | static void exit_trace(int status); |
256 | ||
99c1f5ab JA |
257 | #define dip_tracing(dip) (*(volatile int *)(&(dip)->trace_started)) |
258 | #define dip_set_tracing(dip, v) ((dip)->trace_started = (v)) | |
259 | ||
260 | #define __for_each_dip(__d, __i, __e) \ | |
261 | for (__i = 0, __d = device_information; __i < __e; __i++, __d++) | |
262 | ||
263 | #define for_each_dip(__d, __i) __for_each_dip(__d, __i, ndevs) | |
9db17354 JA |
264 | #define for_each_tip(__d, __t, __j) \ |
265 | for (__j = 0, __t = (__d)->threads; __j < ncpus; __j++, __t++) | |
99c1f5ab | 266 | |
8e86c98a JA |
267 | /* |
268 | * networking stuff follows. we include a magic number so we know whether | |
269 | * to endianness convert or not | |
270 | */ | |
271 | struct blktrace_net_hdr { | |
272 | u32 magic; /* same as trace magic */ | |
22cd0c02 | 273 | char buts_name[32]; /* trace name */ |
8e86c98a | 274 | u32 cpu; /* for which cpu */ |
22cd0c02 | 275 | u32 max_cpus; |
8e86c98a JA |
276 | u32 len; /* length of following trace data */ |
277 | }; | |
278 | ||
279 | #define TRACE_NET_PORT (8462) | |
280 | ||
281 | enum { | |
282 | Net_none = 0, | |
283 | Net_server, | |
284 | Net_client, | |
285 | }; | |
286 | ||
287 | /* | |
288 | * network cmd line params | |
289 | */ | |
290 | static char hostname[MAXHOSTNAMELEN]; | |
291 | static int net_port = TRACE_NET_PORT; | |
292 | static int net_mode = 0; | |
32f18c48 | 293 | static int net_sendfile; |
8e86c98a JA |
294 | |
295 | static int net_in_fd = -1; | |
296 | static int net_out_fd = -1; | |
297 | ||
298 | static void handle_sigint(__attribute__((__unused__)) int sig) | |
299 | { | |
7035d92d JA |
300 | struct device_information *dip; |
301 | int i; | |
302 | ||
303 | /* | |
304 | * stop trace so we can reap currently produced data | |
305 | */ | |
306 | for_each_dip(dip, i) { | |
921b05fe JA |
307 | if (dip->fd == -1) |
308 | continue; | |
7035d92d JA |
309 | if (ioctl(dip->fd, BLKTRACESTOP) < 0) |
310 | perror("BLKTRACESTOP"); | |
311 | } | |
312 | ||
8e86c98a JA |
313 | done = 1; |
314 | } | |
315 | ||
eb3c8108 JA |
316 | static int get_dropped_count(const char *buts_name) |
317 | { | |
318 | int fd; | |
319 | char tmp[MAXPATHLEN + 64]; | |
320 | ||
321 | snprintf(tmp, sizeof(tmp), "%s/block/%s/dropped", | |
322 | relay_path, buts_name); | |
323 | ||
324 | fd = open(tmp, O_RDONLY); | |
325 | if (fd < 0) { | |
326 | /* | |
327 | * this may be ok, if the kernel doesn't support dropped counts | |
328 | */ | |
329 | if (errno == ENOENT) | |
330 | return 0; | |
331 | ||
332 | fprintf(stderr, "Couldn't open dropped file %s\n", tmp); | |
333 | return -1; | |
334 | } | |
335 | ||
336 | if (read(fd, tmp, sizeof(tmp)) < 0) { | |
337 | perror(tmp); | |
338 | close(fd); | |
339 | return -1; | |
340 | } | |
341 | ||
342 | close(fd); | |
343 | ||
344 | return atoi(tmp); | |
345 | } | |
346 | ||
11eedd9b JA |
347 | static size_t get_subbuf_padding(struct thread_information *tip, |
348 | unsigned subbuf) | |
349 | { | |
350 | size_t padding_size = buf_nr * sizeof(size_t); | |
351 | size_t ret; | |
352 | ||
353 | if (read(tip->pfd, tip->pfd_buf, padding_size) < 0) { | |
354 | perror("tip pad read"); | |
355 | ret = -1; | |
356 | } else | |
357 | ret = tip->pfd_buf[subbuf]; | |
358 | ||
359 | return ret; | |
360 | } | |
361 | ||
e7c9f3ff | 362 | static int start_trace(struct device_information *dip) |
d0ca268b JA |
363 | { |
364 | struct blk_user_trace_setup buts; | |
365 | ||
1f79c4a0 | 366 | memset(&buts, 0, sizeof(buts)); |
129aa440 JA |
367 | buts.buf_size = buf_size; |
368 | buts.buf_nr = buf_nr; | |
d39c04ca | 369 | buts.act_mask = act_mask; |
d0ca268b | 370 | |
ed71a31e JA |
371 | if (ioctl(dip->fd, BLKTRACESETUP, &buts) < 0) { |
372 | perror("BLKTRACESETUP"); | |
373 | return 1; | |
374 | } | |
375 | ||
376 | if (ioctl(dip->fd, BLKTRACESTART) < 0) { | |
377 | perror("BLKTRACESTART"); | |
d0ca268b JA |
378 | return 1; |
379 | } | |
380 | ||
e7c9f3ff | 381 | memcpy(dip->buts_name, buts.name, sizeof(dip->buts_name)); |
99c1f5ab | 382 | dip_set_tracing(dip, 1); |
d0ca268b JA |
383 | return 0; |
384 | } | |
385 | ||
e7c9f3ff | 386 | static void stop_trace(struct device_information *dip) |
d0ca268b | 387 | { |
99c1f5ab JA |
388 | if (dip_tracing(dip) || kill_running_trace) { |
389 | dip_set_tracing(dip, 0); | |
cf9208ea | 390 | |
7035d92d JA |
391 | /* |
392 | * should be stopped, just don't complain if it isn't | |
393 | */ | |
394 | ioctl(dip->fd, BLKTRACESTOP); | |
395 | ||
ed71a31e JA |
396 | if (ioctl(dip->fd, BLKTRACETEARDOWN) < 0) |
397 | perror("BLKTRACETEARDOWN"); | |
cf9208ea | 398 | |
e7c9f3ff | 399 | close(dip->fd); |
cf9208ea | 400 | dip->fd = -1; |
707b0914 | 401 | } |
d0ca268b JA |
402 | } |
403 | ||
e7c9f3ff NS |
404 | static void stop_all_traces(void) |
405 | { | |
406 | struct device_information *dip; | |
407 | int i; | |
408 | ||
eb3c8108 JA |
409 | for_each_dip(dip, i) { |
410 | dip->drop_count = get_dropped_count(dip->buts_name); | |
e7c9f3ff | 411 | stop_trace(dip); |
eb3c8108 | 412 | } |
e7c9f3ff NS |
413 | } |
414 | ||
eb3c8108 JA |
415 | static void wait_for_data(struct thread_information *tip) |
416 | { | |
417 | struct pollfd pfd = { .fd = tip->fd, .events = POLLIN }; | |
418 | ||
9db17354 | 419 | do { |
b4aabcb3 | 420 | poll(&pfd, 1, 100); |
9db17354 JA |
421 | if (pfd.revents & POLLIN) |
422 | break; | |
423 | if (tip->ofile_stdout) | |
424 | break; | |
425 | } while (!is_done()); | |
eb3c8108 JA |
426 | } |
427 | ||
0cc7d25e JA |
428 | static int read_data_file(struct thread_information *tip, void *buf, |
429 | unsigned int len) | |
d0ca268b | 430 | { |
ae9f71b3 | 431 | int ret = 0; |
bbabf03a | 432 | |
9db17354 JA |
433 | do { |
434 | wait_for_data(tip); | |
ae9f71b3 | 435 | |
9db17354 JA |
436 | ret = read(tip->fd, buf, len); |
437 | if (!ret) | |
438 | continue; | |
439 | else if (ret > 0) | |
440 | return ret; | |
441 | else { | |
bbabf03a | 442 | if (errno != EAGAIN) { |
a3e4d330 JA |
443 | perror(tip->fn); |
444 | fprintf(stderr,"Thread %d failed read of %s\n", | |
445 | tip->cpu, tip->fn); | |
446 | break; | |
447 | } | |
9db17354 | 448 | continue; |
bbabf03a | 449 | } |
9db17354 | 450 | } while (!is_done()); |
8a43bac5 | 451 | |
bbabf03a | 452 | return ret; |
8e86c98a | 453 | |
8a43bac5 JA |
454 | } |
455 | ||
0cc7d25e JA |
456 | static int read_data_net(struct thread_information *tip, void *buf, |
457 | unsigned int len) | |
8e86c98a JA |
458 | { |
459 | unsigned int bytes_left = len; | |
460 | int ret = 0; | |
461 | ||
462 | do { | |
463 | ret = recv(net_in_fd, buf, bytes_left, MSG_WAITALL); | |
464 | ||
465 | if (!ret) | |
466 | continue; | |
467 | else if (ret < 0) { | |
468 | if (errno != EAGAIN) { | |
469 | perror(tip->fn); | |
470 | fprintf(stderr, "server: failed read\n"); | |
471 | return 0; | |
472 | } | |
473 | continue; | |
474 | } else { | |
475 | buf += ret; | |
476 | bytes_left -= ret; | |
477 | } | |
478 | } while (!is_done() && bytes_left); | |
479 | ||
410d7c62 | 480 | return len - bytes_left; |
8e86c98a JA |
481 | } |
482 | ||
0cc7d25e JA |
483 | static int read_data(struct thread_information *tip, void *buf, |
484 | unsigned int len) | |
8e86c98a | 485 | { |
663962f7 | 486 | return tip->read_data(tip, buf, len); |
8e86c98a JA |
487 | } |
488 | ||
489 | static inline struct tip_subbuf * | |
490 | subbuf_fifo_dequeue(struct thread_information *tip) | |
a3e4d330 | 491 | { |
21f55651 JA |
492 | const int head = tip->fifo.head; |
493 | const int next = (head + 1) & (FIFO_SIZE - 1); | |
494 | ||
495 | if (head != tip->fifo.tail) { | |
496 | struct tip_subbuf *ts = tip->fifo.q[head]; | |
497 | ||
498 | store_barrier(); | |
499 | tip->fifo.head = next; | |
500 | return ts; | |
501 | } | |
502 | ||
503 | return NULL; | |
9db17354 | 504 | } |
eb3c8108 | 505 | |
21f55651 JA |
506 | static inline int subbuf_fifo_queue(struct thread_information *tip, |
507 | struct tip_subbuf *ts) | |
9db17354 | 508 | { |
21f55651 JA |
509 | const int tail = tip->fifo.tail; |
510 | const int next = (tail + 1) & (FIFO_SIZE - 1); | |
511 | ||
512 | if (next != tip->fifo.head) { | |
513 | tip->fifo.q[tail] = ts; | |
514 | store_barrier(); | |
515 | tip->fifo.tail = next; | |
516 | return 0; | |
517 | } | |
518 | ||
519 | fprintf(stderr, "fifo too small!\n"); | |
520 | return 1; | |
a3e4d330 JA |
521 | } |
522 | ||
b7106311 JA |
523 | /* |
524 | * For file output, truncate and mmap the file appropriately | |
525 | */ | |
8e86c98a | 526 | static int mmap_subbuf(struct thread_information *tip, unsigned int maxlen) |
b7106311 JA |
527 | { |
528 | int ofd = fileno(tip->ofile); | |
529 | int ret; | |
530 | ||
531 | /* | |
532 | * extend file, if we have to. use chunks of 16 subbuffers. | |
533 | */ | |
534 | if (tip->fs_off + buf_size > tip->fs_buf_len) { | |
535 | if (tip->fs_buf) { | |
5975d309 | 536 | munlock(tip->fs_buf, tip->fs_buf_len); |
b7106311 JA |
537 | munmap(tip->fs_buf, tip->fs_buf_len); |
538 | tip->fs_buf = NULL; | |
539 | } | |
540 | ||
541 | tip->fs_off = tip->fs_size & (page_size - 1); | |
542 | tip->fs_buf_len = (16 * buf_size) - tip->fs_off; | |
543 | tip->fs_max_size += tip->fs_buf_len; | |
544 | ||
545 | if (ftruncate(ofd, tip->fs_max_size) < 0) { | |
546 | perror("ftruncate"); | |
547 | return -1; | |
548 | } | |
549 | ||
550 | tip->fs_buf = mmap(NULL, tip->fs_buf_len, PROT_WRITE, | |
551 | MAP_SHARED, ofd, tip->fs_size - tip->fs_off); | |
552 | if (tip->fs_buf == MAP_FAILED) { | |
553 | perror("mmap"); | |
554 | return -1; | |
555 | } | |
5975d309 | 556 | mlock(tip->fs_buf, tip->fs_buf_len); |
b7106311 JA |
557 | } |
558 | ||
8e86c98a | 559 | ret = read_data(tip, tip->fs_buf + tip->fs_off, maxlen); |
b7106311 | 560 | if (ret >= 0) { |
dbfbd6db | 561 | tip->data_read += ret; |
b7106311 JA |
562 | tip->fs_size += ret; |
563 | tip->fs_off += ret; | |
564 | return 0; | |
565 | } | |
566 | ||
567 | return -1; | |
568 | } | |
569 | ||
18eed2a7 JA |
570 | /* |
571 | * Use the copy approach for pipes and network | |
572 | */ | |
573 | static int get_subbuf(struct thread_information *tip, unsigned int maxlen) | |
574 | { | |
575 | struct tip_subbuf *ts = malloc(sizeof(*ts)); | |
576 | int ret; | |
577 | ||
578 | ts->buf = malloc(buf_size); | |
579 | ts->max_len = maxlen; | |
580 | ||
581 | ret = read_data(tip, ts->buf, ts->max_len); | |
582 | if (ret > 0) { | |
583 | ts->len = ret; | |
dbfbd6db | 584 | tip->data_read += ret; |
7035d92d JA |
585 | if (subbuf_fifo_queue(tip, ts)) |
586 | return -1; | |
18eed2a7 JA |
587 | } |
588 | ||
589 | return ret; | |
590 | } | |
591 | ||
32f18c48 JA |
592 | static int get_subbuf_sendfile(struct thread_information *tip, |
593 | unsigned int maxlen) | |
594 | { | |
11eedd9b | 595 | struct tip_subbuf *ts; |
32f18c48 | 596 | struct stat sb; |
7035d92d | 597 | unsigned int ready, this_size, total; |
32f18c48 | 598 | |
18eed2a7 JA |
599 | wait_for_data(tip); |
600 | ||
601 | /* | |
602 | * hack to get last data out, we can't use sendfile for that | |
603 | */ | |
604 | if (is_done()) | |
605 | return get_subbuf(tip, maxlen); | |
606 | ||
32f18c48 JA |
607 | if (fstat(tip->fd, &sb) < 0) { |
608 | perror("trace stat"); | |
7035d92d | 609 | return -1; |
32f18c48 JA |
610 | } |
611 | ||
11eedd9b | 612 | ready = sb.st_size - tip->ofile_offset; |
663962f7 JA |
613 | if (!ready) { |
614 | /* | |
7035d92d | 615 | * delay a little, since poll() will return data available |
663962f7 JA |
616 | * until sendfile() is run |
617 | */ | |
618 | usleep(100); | |
11eedd9b | 619 | return 0; |
663962f7 | 620 | } |
11eedd9b | 621 | |
1be42f3d | 622 | this_size = buf_size; |
7035d92d | 623 | total = ready; |
11eedd9b | 624 | while (ready) { |
1be42f3d JA |
625 | if (this_size > ready) |
626 | this_size = ready; | |
627 | ||
11eedd9b JA |
628 | ts = malloc(sizeof(*ts)); |
629 | ||
11eedd9b | 630 | ts->buf = NULL; |
7035d92d | 631 | ts->max_len = 0; |
11eedd9b | 632 | |
1be42f3d | 633 | ts->len = this_size; |
11eedd9b JA |
634 | ts->offset = tip->ofile_offset; |
635 | tip->ofile_offset += ts->len; | |
636 | ||
7035d92d JA |
637 | if (subbuf_fifo_queue(tip, ts)) |
638 | return -1; | |
11eedd9b | 639 | |
1be42f3d | 640 | ready -= this_size; |
11eedd9b JA |
641 | } |
642 | ||
7035d92d | 643 | return total; |
32f18c48 JA |
644 | } |
645 | ||
9db17354 | 646 | static void close_thread(struct thread_information *tip) |
a3e4d330 | 647 | { |
9db17354 JA |
648 | if (tip->fd != -1) |
649 | close(tip->fd); | |
11eedd9b JA |
650 | if (tip->pfd != -1) |
651 | close(tip->pfd); | |
9db17354 JA |
652 | if (tip->ofile) |
653 | fclose(tip->ofile); | |
654 | if (tip->ofile_buffer) | |
655 | free(tip->ofile_buffer); | |
656 | if (tip->fd_buf) | |
657 | free(tip->fd_buf); | |
11eedd9b JA |
658 | if (tip->pfd_buf) |
659 | free(tip->pfd_buf); | |
1c99bc21 | 660 | |
9db17354 | 661 | tip->fd = -1; |
11eedd9b | 662 | tip->pfd = -1; |
9db17354 JA |
663 | tip->ofile = NULL; |
664 | tip->ofile_buffer = NULL; | |
665 | tip->fd_buf = NULL; | |
a3e4d330 JA |
666 | } |
667 | ||
8e86c98a JA |
668 | static void tip_ftrunc_final(struct thread_information *tip) |
669 | { | |
670 | /* | |
671 | * truncate to right size and cleanup mmap | |
672 | */ | |
673 | if (tip->ofile_mmap) { | |
674 | int ofd = fileno(tip->ofile); | |
675 | ||
676 | if (tip->fs_buf) | |
677 | munmap(tip->fs_buf, tip->fs_buf_len); | |
678 | ||
679 | ftruncate(ofd, tip->fs_size); | |
680 | } | |
681 | } | |
682 | ||
9db17354 | 683 | static void *thread_main(void *arg) |
a3e4d330 | 684 | { |
9db17354 JA |
685 | struct thread_information *tip = arg; |
686 | pid_t pid = getpid(); | |
687 | cpu_set_t cpu_mask; | |
a3e4d330 | 688 | |
9db17354 JA |
689 | CPU_ZERO(&cpu_mask); |
690 | CPU_SET((tip->cpu), &cpu_mask); | |
a3e4d330 | 691 | |
9db17354 JA |
692 | if (sched_setaffinity(pid, sizeof(cpu_mask), &cpu_mask) == -1) { |
693 | perror("sched_setaffinity"); | |
694 | exit_trace(1); | |
695 | } | |
a3e4d330 | 696 | |
9db17354 JA |
697 | snprintf(tip->fn, sizeof(tip->fn), "%s/block/%s/trace%d", |
698 | relay_path, tip->device->buts_name, tip->cpu); | |
699 | tip->fd = open(tip->fn, O_RDONLY); | |
700 | if (tip->fd < 0) { | |
701 | perror(tip->fn); | |
702 | fprintf(stderr,"Thread %d failed open of %s\n", tip->cpu, | |
703 | tip->fn); | |
704 | exit_trace(1); | |
a3e4d330 JA |
705 | } |
706 | ||
11eedd9b JA |
707 | if (net_mode == Net_client && net_sendfile) { |
708 | char tmp[MAXPATHLEN + 64]; | |
709 | ||
710 | snprintf(tmp, sizeof(tmp), "%s/block/%s/trace%d.padding", | |
711 | relay_path, tip->device->buts_name, tip->cpu); | |
712 | ||
713 | tip->pfd = open(tmp, O_RDONLY); | |
714 | if (tip->pfd < 0) { | |
715 | fprintf(stderr, "Couldn't open padding file %s\n", tmp); | |
716 | exit_trace(1); | |
717 | } | |
718 | ||
719 | tip->pfd_buf = malloc(buf_nr * sizeof(size_t)); | |
720 | } | |
721 | ||
b7106311 | 722 | while (!is_done()) { |
7035d92d | 723 | if (tip->get_subbuf(tip, buf_size) < 0) |
0cc7d25e | 724 | break; |
b7106311 JA |
725 | } |
726 | ||
7035d92d JA |
727 | /* |
728 | * trace is stopped, pull data until we get a short read | |
729 | */ | |
730 | while (tip->get_subbuf(tip, buf_size) > 0) | |
731 | ; | |
732 | ||
8e86c98a JA |
733 | tip_ftrunc_final(tip); |
734 | tip->exited = 1; | |
735 | return NULL; | |
736 | } | |
b7106311 | 737 | |
8e86c98a JA |
738 | static int write_data_net(int fd, void *buf, unsigned int buf_len) |
739 | { | |
740 | unsigned int bytes_left = buf_len; | |
741 | int ret; | |
b7106311 | 742 | |
8e86c98a JA |
743 | while (bytes_left) { |
744 | ret = send(fd, buf, bytes_left, 0); | |
745 | if (ret < 0) { | |
746 | perror("send"); | |
747 | return 1; | |
748 | } | |
749 | ||
750 | buf += ret; | |
751 | bytes_left -= ret; | |
9db17354 | 752 | } |
a3e4d330 | 753 | |
8e86c98a | 754 | return 0; |
a3e4d330 JA |
755 | } |
756 | ||
32f18c48 | 757 | static int net_send_header(struct thread_information *tip, unsigned int len) |
8e86c98a JA |
758 | { |
759 | struct blktrace_net_hdr hdr; | |
8e86c98a JA |
760 | |
761 | hdr.magic = BLK_IO_TRACE_MAGIC; | |
22cd0c02 | 762 | strcpy(hdr.buts_name, tip->device->buts_name); |
8e86c98a | 763 | hdr.cpu = tip->cpu; |
22cd0c02 | 764 | hdr.max_cpus = ncpus; |
32f18c48 | 765 | hdr.len = len; |
8e86c98a | 766 | |
32f18c48 JA |
767 | return write_data_net(net_out_fd, &hdr, sizeof(hdr)); |
768 | } | |
8e86c98a | 769 | |
6a752c90 JA |
770 | /* |
771 | * send header with 0 length to signal end-of-run | |
772 | */ | |
773 | static void net_client_send_close(void) | |
774 | { | |
775 | struct blktrace_net_hdr hdr; | |
776 | ||
777 | hdr.magic = BLK_IO_TRACE_MAGIC; | |
778 | hdr.cpu = 0; | |
779 | hdr.max_cpus = ncpus; | |
780 | hdr.len = 0; | |
781 | ||
782 | write_data_net(net_out_fd, &hdr, sizeof(hdr)); | |
783 | } | |
784 | ||
32f18c48 JA |
785 | static int flush_subbuf_net(struct thread_information *tip, |
786 | struct tip_subbuf *ts) | |
787 | { | |
788 | if (net_send_header(tip, ts->len)) | |
789 | return 1; | |
22cd0c02 JA |
790 | if (write_data_net(net_out_fd, ts->buf, ts->len)) |
791 | return 1; | |
8e86c98a | 792 | |
f0597a7e | 793 | free(ts->buf); |
8e86c98a JA |
794 | free(ts); |
795 | return 0; | |
796 | } | |
797 | ||
32f18c48 JA |
798 | static int flush_subbuf_sendfile(struct thread_information *tip, |
799 | struct tip_subbuf *ts) | |
800 | { | |
11eedd9b JA |
801 | size_t padding; |
802 | unsigned subbuf; | |
803 | unsigned len; | |
18eed2a7 JA |
804 | |
805 | /* | |
806 | * currently we cannot use sendfile() on the last bytes read, as they | |
807 | * may not be a full subbuffer. get_subbuf_sendfile() falls back to | |
808 | * the read approach for those, so use send() to ship them out | |
809 | */ | |
810 | if (ts->buf) | |
811 | return flush_subbuf_net(tip, ts); | |
11eedd9b JA |
812 | |
813 | subbuf = (ts->offset / buf_size) % buf_nr; | |
814 | padding = get_subbuf_padding(tip, subbuf); | |
815 | len = ts->len - padding; | |
816 | ||
817 | if (net_send_header(tip, len)) | |
32f18c48 | 818 | return 1; |
11eedd9b | 819 | if (sendfile(net_out_fd, tip->fd, &ts->offset, len) < 0) { |
32f18c48 JA |
820 | perror("sendfile"); |
821 | return 1; | |
822 | } | |
823 | ||
112a166e | 824 | tip->data_read += len; |
32f18c48 JA |
825 | free(ts); |
826 | return 0; | |
827 | } | |
828 | ||
8e86c98a JA |
829 | static int write_data(struct thread_information *tip, void *buf, |
830 | unsigned int buf_len) | |
8a43bac5 | 831 | { |
7126171a | 832 | int ret; |
8a43bac5 | 833 | |
6480258a JA |
834 | if (!buf_len) |
835 | return 0; | |
836 | ||
7126171a JA |
837 | while (1) { |
838 | ret = fwrite(buf, buf_len, 1, tip->ofile); | |
007c233c | 839 | if (ret == 1) |
8a43bac5 JA |
840 | break; |
841 | ||
db6fe5bc JA |
842 | if (ret < 0) { |
843 | perror("write"); | |
844 | return 1; | |
8a43bac5 | 845 | } |
d0ca268b JA |
846 | } |
847 | ||
9db17354 | 848 | if (tip->ofile_stdout) |
7126171a JA |
849 | fflush(tip->ofile); |
850 | ||
8a43bac5 JA |
851 | return 0; |
852 | } | |
853 | ||
8e86c98a JA |
854 | static int flush_subbuf_file(struct thread_information *tip, |
855 | struct tip_subbuf *ts) | |
8a43bac5 | 856 | { |
9db17354 JA |
857 | unsigned int offset = 0; |
858 | struct blk_io_trace *t; | |
859 | int pdu_len, events = 0; | |
8a43bac5 | 860 | |
9db17354 | 861 | /* |
7de86b12 | 862 | * surplus from last run |
9db17354 | 863 | */ |
7de86b12 AB |
864 | if (tip->leftover_ts) { |
865 | struct tip_subbuf *prev_ts = tip->leftover_ts; | |
866 | ||
9e8b753c | 867 | if (prev_ts->len + ts->len > prev_ts->max_len) { |
7de86b12 AB |
868 | prev_ts->max_len += ts->len; |
869 | prev_ts->buf = realloc(prev_ts->buf, prev_ts->max_len); | |
870 | } | |
871 | ||
9e8b753c | 872 | memcpy(prev_ts->buf + prev_ts->len, ts->buf, ts->len); |
7de86b12 AB |
873 | prev_ts->len += ts->len; |
874 | ||
875 | free(ts->buf); | |
876 | free(ts); | |
877 | ||
878 | ts = prev_ts; | |
879 | tip->leftover_ts = NULL; | |
9db17354 | 880 | } |
d0ca268b | 881 | |
9db17354 JA |
882 | while (offset + sizeof(*t) <= ts->len) { |
883 | t = ts->buf + offset; | |
3a9d6c13 | 884 | |
9cfa6c2b AB |
885 | if (verify_trace(t)) { |
886 | write_data(tip, ts->buf, offset); | |
9db17354 | 887 | return -1; |
9cfa6c2b | 888 | } |
3a9d6c13 | 889 | |
9db17354 | 890 | pdu_len = t->pdu_len; |
3a9d6c13 | 891 | |
9db17354 | 892 | if (offset + sizeof(*t) + pdu_len > ts->len) |
3a9d6c13 | 893 | break; |
4b5db44a | 894 | |
9db17354 JA |
895 | offset += sizeof(*t) + pdu_len; |
896 | tip->events_processed++; | |
b7106311 | 897 | tip->data_read += sizeof(*t) + pdu_len; |
9db17354 | 898 | events++; |
3a9d6c13 JA |
899 | } |
900 | ||
9cfa6c2b AB |
901 | if (write_data(tip, ts->buf, offset)) |
902 | return -1; | |
903 | ||
3a9d6c13 | 904 | /* |
9db17354 | 905 | * leftover bytes, save them for next time |
3a9d6c13 | 906 | */ |
9db17354 | 907 | if (offset != ts->len) { |
7de86b12 | 908 | tip->leftover_ts = ts; |
9e8b753c JA |
909 | ts->len -= offset; |
910 | memmove(ts->buf, ts->buf + offset, ts->len); | |
7de86b12 AB |
911 | } else { |
912 | free(ts->buf); | |
913 | free(ts); | |
9db17354 | 914 | } |
4b5db44a | 915 | |
9db17354 | 916 | return events; |
4b5db44a JA |
917 | } |
918 | ||
9db17354 | 919 | static int write_tip_events(struct thread_information *tip) |
d5396421 | 920 | { |
21f55651 | 921 | struct tip_subbuf *ts = subbuf_fifo_dequeue(tip); |
d5396421 | 922 | |
0cc7d25e JA |
923 | if (ts) |
924 | return tip->flush_subbuf(tip, ts); | |
91816d54 | 925 | |
9db17354 | 926 | return 0; |
91816d54 JA |
927 | } |
928 | ||
9db17354 JA |
929 | /* |
930 | * scans the tips we know and writes out the subbuffers we accumulate | |
931 | */ | |
932 | static void get_and_write_events(void) | |
d0ca268b | 933 | { |
9db17354 JA |
934 | struct device_information *dip; |
935 | struct thread_information *tip; | |
27223f19 | 936 | int i, j, events, ret, tips_running; |
d0ca268b | 937 | |
9db17354 JA |
938 | while (!is_done()) { |
939 | events = 0; | |
d0ca268b | 940 | |
9db17354 JA |
941 | for_each_dip(dip, i) { |
942 | for_each_tip(dip, tip, j) { | |
943 | ret = write_tip_events(tip); | |
944 | if (ret > 0) | |
945 | events += ret; | |
946 | } | |
947 | } | |
d0ca268b | 948 | |
9db17354 JA |
949 | if (!events) |
950 | usleep(10); | |
d0ca268b JA |
951 | } |
952 | ||
a3e4d330 | 953 | /* |
9db17354 | 954 | * reap stored events |
a3e4d330 | 955 | */ |
9db17354 JA |
956 | do { |
957 | events = 0; | |
27223f19 | 958 | tips_running = 0; |
9db17354 JA |
959 | for_each_dip(dip, i) { |
960 | for_each_tip(dip, tip, j) { | |
961 | ret = write_tip_events(tip); | |
962 | if (ret > 0) | |
963 | events += ret; | |
27223f19 | 964 | tips_running += !tip->exited; |
9db17354 | 965 | } |
69e65a9e | 966 | } |
9db17354 | 967 | usleep(10); |
27223f19 | 968 | } while (events || tips_running); |
d0ca268b JA |
969 | } |
970 | ||
b7106311 JA |
971 | static void wait_for_threads(void) |
972 | { | |
973 | /* | |
8e86c98a JA |
974 | * for piped or network output, poll and fetch data for writeout. |
975 | * for files, we just wait around for trace threads to exit | |
b7106311 | 976 | */ |
8e86c98a JA |
977 | if ((output_name && !strcmp(output_name, "-")) || |
978 | net_mode == Net_client) | |
b7106311 JA |
979 | get_and_write_events(); |
980 | else { | |
981 | struct device_information *dip; | |
982 | struct thread_information *tip; | |
983 | int i, j, tips_running; | |
984 | ||
985 | do { | |
986 | tips_running = 0; | |
987 | usleep(1000); | |
988 | ||
989 | for_each_dip(dip, i) | |
990 | for_each_tip(dip, tip, j) | |
991 | tips_running += !tip->exited; | |
992 | } while (tips_running); | |
993 | } | |
6a752c90 JA |
994 | |
995 | if (net_mode == Net_client) | |
996 | net_client_send_close(); | |
b7106311 JA |
997 | } |
998 | ||
e3bf54d8 JA |
999 | static int fill_ofname(struct thread_information *tip, char *dst, |
1000 | char *buts_name) | |
8e86c98a | 1001 | { |
e3bf54d8 | 1002 | struct stat sb; |
8e86c98a | 1003 | int len = 0; |
e3bf54d8 | 1004 | time_t t; |
8e86c98a JA |
1005 | |
1006 | if (output_dir) | |
1007 | len = sprintf(dst, "%s/", output_dir); | |
1008 | ||
e3bf54d8 JA |
1009 | if (net_mode == Net_server) { |
1010 | len += sprintf(dst + len, "%s-", inet_ntoa(tip->cl_in_addr)); | |
1011 | time(&t); | |
1012 | len += strftime(dst + len, 64, "%F-%T/", gmtime(&t)); | |
1013 | } | |
1014 | ||
1015 | if (stat(dst, &sb) < 0) { | |
1016 | if (errno != ENOENT) { | |
1017 | perror("stat"); | |
1018 | return 1; | |
1019 | } | |
1020 | if (mkdir(dst, 0755) < 0) { | |
1021 | perror(dst); | |
1022 | fprintf(stderr, "Can't make output dir\n"); | |
1023 | return 1; | |
1024 | } | |
1025 | } | |
1026 | ||
8e86c98a | 1027 | if (output_name) |
e3bf54d8 | 1028 | sprintf(dst + len, "%s.blktrace.%d", output_name, tip->cpu); |
8e86c98a | 1029 | else |
e3bf54d8 JA |
1030 | sprintf(dst + len, "%s.blktrace.%d", buts_name, tip->cpu); |
1031 | ||
1032 | return 0; | |
8e86c98a JA |
1033 | } |
1034 | ||
0cc7d25e JA |
1035 | static void fill_ops(struct thread_information *tip) |
1036 | { | |
1037 | /* | |
1038 | * setup ops | |
1039 | */ | |
32f18c48 JA |
1040 | if (net_mode == Net_client) { |
1041 | if (net_sendfile) { | |
1042 | tip->get_subbuf = get_subbuf_sendfile; | |
1043 | tip->flush_subbuf = flush_subbuf_sendfile; | |
1044 | } else { | |
1045 | tip->get_subbuf = get_subbuf; | |
1046 | tip->flush_subbuf = flush_subbuf_net; | |
1047 | } | |
1048 | } else { | |
1049 | if (tip->ofile_mmap) | |
1050 | tip->get_subbuf = mmap_subbuf; | |
1051 | else | |
1052 | tip->get_subbuf = get_subbuf; | |
0cc7d25e | 1053 | |
0cc7d25e | 1054 | tip->flush_subbuf = flush_subbuf_file; |
32f18c48 JA |
1055 | } |
1056 | ||
0cc7d25e JA |
1057 | if (net_mode == Net_server) |
1058 | tip->read_data = read_data_net; | |
1059 | else | |
1060 | tip->read_data = read_data_file; | |
1061 | } | |
1062 | ||
ddf22842 JA |
1063 | static int tip_open_output(struct device_information *dip, |
1064 | struct thread_information *tip) | |
d0ca268b | 1065 | { |
ddf22842 | 1066 | int pipeline = output_name && !strcmp(output_name, "-"); |
8e86c98a | 1067 | int mode, vbuf_size; |
e3bf54d8 | 1068 | char op[128]; |
d0ca268b | 1069 | |
ddf22842 JA |
1070 | if (net_mode == Net_client) { |
1071 | tip->ofile = NULL; | |
1072 | tip->ofile_stdout = 0; | |
1073 | tip->ofile_mmap = 0; | |
0c0b75b4 | 1074 | goto done; |
ddf22842 JA |
1075 | } else if (pipeline) { |
1076 | tip->ofile = fdopen(STDOUT_FILENO, "w"); | |
1077 | tip->ofile_stdout = 1; | |
1078 | tip->ofile_mmap = 0; | |
1079 | mode = _IOLBF; | |
1080 | vbuf_size = 512; | |
1081 | } else { | |
e3bf54d8 JA |
1082 | if (fill_ofname(tip, op, dip->buts_name)) |
1083 | return 1; | |
ddf22842 JA |
1084 | tip->ofile = fopen(op, "w+"); |
1085 | tip->ofile_stdout = 0; | |
1086 | tip->ofile_mmap = 1; | |
1087 | mode = _IOFBF; | |
1088 | vbuf_size = OFILE_BUF; | |
1089 | } | |
d5396421 | 1090 | |
0c0b75b4 | 1091 | if (tip->ofile == NULL) { |
ddf22842 JA |
1092 | perror(op); |
1093 | return 1; | |
1094 | } | |
d5396421 | 1095 | |
0c0b75b4 JA |
1096 | tip->ofile_buffer = malloc(vbuf_size); |
1097 | if (setvbuf(tip->ofile, tip->ofile_buffer, mode, vbuf_size)) { | |
1098 | perror("setvbuf"); | |
1099 | close_thread(tip); | |
1100 | return 1; | |
ddf22842 JA |
1101 | } |
1102 | ||
0c0b75b4 | 1103 | done: |
ddf22842 JA |
1104 | fill_ops(tip); |
1105 | return 0; | |
1106 | } | |
007c233c | 1107 | |
ddf22842 JA |
1108 | static int start_threads(struct device_information *dip) |
1109 | { | |
1110 | struct thread_information *tip; | |
1111 | int j; | |
1112 | ||
1113 | for_each_tip(dip, tip, j) { | |
1114 | tip->cpu = j; | |
1115 | tip->device = dip; | |
1116 | tip->events_processed = 0; | |
11eedd9b JA |
1117 | tip->fd = -1; |
1118 | tip->pfd = -1; | |
ddf22842 JA |
1119 | memset(&tip->fifo, 0, sizeof(tip->fifo)); |
1120 | tip->leftover_ts = NULL; | |
1121 | ||
1122 | if (tip_open_output(dip, tip)) | |
1123 | return 1; | |
0cc7d25e | 1124 | |
9db17354 | 1125 | if (pthread_create(&tip->thread, NULL, thread_main, tip)) { |
e7c9f3ff | 1126 | perror("pthread_create"); |
007c233c | 1127 | close_thread(tip); |
e7c9f3ff | 1128 | return 1; |
d0ca268b JA |
1129 | } |
1130 | } | |
1131 | ||
e7c9f3ff | 1132 | return 0; |
d0ca268b JA |
1133 | } |
1134 | ||
e7c9f3ff | 1135 | static void stop_threads(struct device_information *dip) |
3aabcd89 | 1136 | { |
e7c9f3ff | 1137 | struct thread_information *tip; |
91816d54 | 1138 | unsigned long ret; |
007c233c JA |
1139 | int i; |
1140 | ||
9db17354 | 1141 | for_each_tip(dip, tip, i) { |
91816d54 | 1142 | (void) pthread_join(tip->thread, (void *) &ret); |
9db17354 JA |
1143 | close_thread(tip); |
1144 | } | |
3aabcd89 JA |
1145 | } |
1146 | ||
e7c9f3ff | 1147 | static void stop_all_threads(void) |
72ca8801 | 1148 | { |
e7c9f3ff | 1149 | struct device_information *dip; |
72ca8801 NS |
1150 | int i; |
1151 | ||
99c1f5ab | 1152 | for_each_dip(dip, i) |
e7c9f3ff NS |
1153 | stop_threads(dip); |
1154 | } | |
1155 | ||
1156 | static void stop_all_tracing(void) | |
1157 | { | |
1158 | struct device_information *dip; | |
91816d54 | 1159 | int i; |
007c233c | 1160 | |
91816d54 | 1161 | for_each_dip(dip, i) |
e7c9f3ff | 1162 | stop_trace(dip); |
72ca8801 NS |
1163 | } |
1164 | ||
1165 | static void exit_trace(int status) | |
1166 | { | |
eb3c8108 JA |
1167 | if (!is_trace_stopped()) { |
1168 | trace_stopped = 1; | |
1169 | stop_all_threads(); | |
1170 | stop_all_tracing(); | |
1171 | } | |
1172 | ||
72ca8801 NS |
1173 | exit(status); |
1174 | } | |
1175 | ||
e7c9f3ff NS |
1176 | static int resize_devices(char *path) |
1177 | { | |
1178 | int size = (ndevs + 1) * sizeof(struct device_information); | |
1179 | ||
1180 | device_information = realloc(device_information, size); | |
1181 | if (!device_information) { | |
1182 | fprintf(stderr, "Out of memory, device %s (%d)\n", path, size); | |
1183 | return 1; | |
1184 | } | |
1185 | device_information[ndevs].path = path; | |
1186 | ndevs++; | |
1187 | return 0; | |
1188 | } | |
1189 | ||
1190 | static int open_devices(void) | |
d0ca268b | 1191 | { |
e7c9f3ff | 1192 | struct device_information *dip; |
d0ca268b | 1193 | int i; |
d0ca268b | 1194 | |
99c1f5ab | 1195 | for_each_dip(dip, i) { |
cf9208ea | 1196 | dip->fd = open(dip->path, O_RDONLY | O_NONBLOCK); |
e7c9f3ff NS |
1197 | if (dip->fd < 0) { |
1198 | perror(dip->path); | |
1199 | return 1; | |
1200 | } | |
1201 | } | |
99c1f5ab | 1202 | |
e7c9f3ff NS |
1203 | return 0; |
1204 | } | |
1205 | ||
1206 | static int start_devices(void) | |
1207 | { | |
1208 | struct device_information *dip; | |
1209 | int i, j, size; | |
1210 | ||
1211 | size = ncpus * sizeof(struct thread_information); | |
1212 | thread_information = malloc(size * ndevs); | |
1213 | if (!thread_information) { | |
1214 | fprintf(stderr, "Out of memory, threads (%d)\n", size * ndevs); | |
1215 | return 1; | |
1216 | } | |
d5396421 | 1217 | |
99c1f5ab | 1218 | for_each_dip(dip, i) { |
e7c9f3ff NS |
1219 | if (start_trace(dip)) { |
1220 | close(dip->fd); | |
1221 | fprintf(stderr, "Failed to start trace on %s\n", | |
1222 | dip->path); | |
1223 | break; | |
1224 | } | |
1225 | } | |
99c1f5ab | 1226 | |
e7c9f3ff | 1227 | if (i != ndevs) { |
99c1f5ab | 1228 | __for_each_dip(dip, j, i) |
e7c9f3ff | 1229 | stop_trace(dip); |
99c1f5ab | 1230 | |
e7c9f3ff NS |
1231 | return 1; |
1232 | } | |
1233 | ||
99c1f5ab | 1234 | for_each_dip(dip, i) { |
e7c9f3ff NS |
1235 | dip->threads = thread_information + (i * ncpus); |
1236 | if (start_threads(dip)) { | |
1237 | fprintf(stderr, "Failed to start worker threads\n"); | |
1238 | break; | |
1239 | } | |
1240 | } | |
99c1f5ab | 1241 | |
e7c9f3ff | 1242 | if (i != ndevs) { |
99c1f5ab | 1243 | __for_each_dip(dip, j, i) |
e7c9f3ff | 1244 | stop_threads(dip); |
99c1f5ab | 1245 | for_each_dip(dip, i) |
e7c9f3ff | 1246 | stop_trace(dip); |
99c1f5ab | 1247 | |
e7c9f3ff | 1248 | return 1; |
d0ca268b JA |
1249 | } |
1250 | ||
e7c9f3ff | 1251 | return 0; |
d0ca268b JA |
1252 | } |
1253 | ||
e7c9f3ff NS |
1254 | static void show_stats(void) |
1255 | { | |
e7c9f3ff NS |
1256 | struct device_information *dip; |
1257 | struct thread_information *tip; | |
b7106311 | 1258 | unsigned long long events_processed, data_read; |
eb3c8108 | 1259 | unsigned long total_drops; |
2f903295 | 1260 | int i, j, no_stdout = 0; |
eb3c8108 JA |
1261 | |
1262 | if (is_stat_shown()) | |
1263 | return; | |
1264 | ||
2f903295 JA |
1265 | if (output_name && !strcmp(output_name, "-")) |
1266 | no_stdout = 1; | |
1267 | ||
eb3c8108 | 1268 | stat_shown = 1; |
428683db | 1269 | |
56070ea4 | 1270 | total_drops = 0; |
99c1f5ab | 1271 | for_each_dip(dip, i) { |
2f903295 | 1272 | if (!no_stdout) |
56070ea4 | 1273 | printf("Device: %s\n", dip->path); |
e7c9f3ff | 1274 | events_processed = 0; |
b7106311 | 1275 | data_read = 0; |
99c1f5ab | 1276 | for_each_tip(dip, tip, j) { |
2f903295 | 1277 | if (!no_stdout) |
b7106311 JA |
1278 | printf(" CPU%3d: %20lu events, %8llu KiB data\n", |
1279 | tip->cpu, tip->events_processed, | |
54824c20 | 1280 | (tip->data_read + 1023) >> 10); |
e7c9f3ff | 1281 | events_processed += tip->events_processed; |
b7106311 | 1282 | data_read += tip->data_read; |
e7c9f3ff | 1283 | } |
eb3c8108 | 1284 | total_drops += dip->drop_count; |
2f903295 | 1285 | if (!no_stdout) |
b7106311 JA |
1286 | printf(" Total: %20llu events (dropped %lu), %8llu KiB data\n", |
1287 | events_processed, dip->drop_count, | |
18d8437d | 1288 | (data_read + 1023) >> 10); |
e7c9f3ff | 1289 | } |
56070ea4 JA |
1290 | |
1291 | if (total_drops) | |
1292 | fprintf(stderr, "You have dropped events, consider using a larger buffer size (-b)\n"); | |
e7c9f3ff | 1293 | } |
52724a0e | 1294 | |
e3bf54d8 JA |
1295 | static struct device_information *net_get_dip(char *buts_name, |
1296 | struct in_addr *cl_in_addr) | |
8e86c98a | 1297 | { |
22cd0c02 | 1298 | struct device_information *dip; |
8e86c98a JA |
1299 | int i; |
1300 | ||
22cd0c02 JA |
1301 | for (i = 0; i < ndevs; i++) { |
1302 | dip = &device_information[i]; | |
8e86c98a | 1303 | |
22cd0c02 JA |
1304 | if (!strcmp(dip->buts_name, buts_name)) |
1305 | return dip; | |
8e86c98a JA |
1306 | } |
1307 | ||
22cd0c02 JA |
1308 | device_information = realloc(device_information, (ndevs + 1) * sizeof(*dip)); |
1309 | dip = &device_information[ndevs]; | |
921b05fe JA |
1310 | memset(dip, 0, sizeof(*dip)); |
1311 | dip->fd = -1; | |
22cd0c02 | 1312 | strcpy(dip->buts_name, buts_name); |
921b05fe | 1313 | dip->path = strdup(buts_name); |
22cd0c02 JA |
1314 | ndevs++; |
1315 | dip->threads = malloc(ncpus * sizeof(struct thread_information)); | |
1316 | memset(dip->threads, 0, ncpus * sizeof(struct thread_information)); | |
1317 | ||
1318 | /* | |
1319 | * open all files | |
1320 | */ | |
1321 | for (i = 0; i < ncpus; i++) { | |
1322 | struct thread_information *tip = &dip->threads[i]; | |
8e86c98a | 1323 | |
22cd0c02 | 1324 | tip->cpu = i; |
22cd0c02 | 1325 | tip->device = dip; |
1366e53a JA |
1326 | tip->fd = -1; |
1327 | tip->pfd = -1; | |
e3bf54d8 | 1328 | tip->cl_in_addr = *cl_in_addr; |
8e86c98a | 1329 | |
ddf22842 | 1330 | if (tip_open_output(dip, tip)) |
22cd0c02 | 1331 | return NULL; |
8e86c98a JA |
1332 | } |
1333 | ||
22cd0c02 JA |
1334 | return dip; |
1335 | } | |
1336 | ||
e3bf54d8 JA |
1337 | static struct thread_information *net_get_tip(struct blktrace_net_hdr *bnh, |
1338 | struct in_addr *cl_in_addr) | |
22cd0c02 JA |
1339 | { |
1340 | struct device_information *dip; | |
1341 | ||
1342 | ncpus = bnh->max_cpus; | |
e3bf54d8 | 1343 | dip = net_get_dip(bnh->buts_name, cl_in_addr); |
22cd0c02 | 1344 | return &dip->threads[bnh->cpu]; |
8e86c98a JA |
1345 | } |
1346 | ||
1347 | static int net_get_header(struct blktrace_net_hdr *bnh) | |
1348 | { | |
1349 | int fl = fcntl(net_in_fd, F_GETFL); | |
1350 | int bytes_left, ret; | |
1351 | void *p = bnh; | |
1352 | ||
1353 | fcntl(net_in_fd, F_SETFL, fl | O_NONBLOCK); | |
1354 | bytes_left = sizeof(*bnh); | |
1355 | while (bytes_left && !is_done()) { | |
1356 | ret = recv(net_in_fd, p, bytes_left, MSG_WAITALL); | |
1357 | if (ret < 0) { | |
1358 | if (errno != EAGAIN) { | |
1359 | perror("recv header"); | |
1360 | return 1; | |
1361 | } | |
1362 | usleep(100); | |
1363 | continue; | |
1364 | } else if (!ret) { | |
1365 | usleep(100); | |
1366 | continue; | |
1367 | } else { | |
1368 | p += ret; | |
1369 | bytes_left -= ret; | |
1370 | } | |
1371 | } | |
1372 | fcntl(net_in_fd, F_SETFL, fl & ~O_NONBLOCK); | |
1373 | return 0; | |
1374 | } | |
1375 | ||
e3bf54d8 | 1376 | static int net_server_loop(struct in_addr *cl_in_addr) |
8e86c98a JA |
1377 | { |
1378 | struct thread_information *tip; | |
1379 | struct blktrace_net_hdr bnh; | |
1380 | ||
1381 | if (net_get_header(&bnh)) | |
1382 | return 1; | |
1383 | ||
1384 | if (data_is_native == -1 && check_data_endianness(bnh.magic)) { | |
1385 | fprintf(stderr, "server: received data is bad\n"); | |
1386 | return 1; | |
1387 | } | |
1388 | ||
1389 | if (!data_is_native) { | |
1390 | bnh.cpu = be32_to_cpu(bnh.cpu); | |
1391 | bnh.len = be32_to_cpu(bnh.len); | |
1392 | } | |
1393 | ||
6a752c90 JA |
1394 | /* |
1395 | * len == 0 means that the other end signalled end-of-run | |
1396 | */ | |
1397 | if (!bnh.len) { | |
1398 | fprintf(stderr, "server: end of run\n"); | |
1399 | return 1; | |
1400 | } | |
1401 | ||
e3bf54d8 | 1402 | tip = net_get_tip(&bnh, cl_in_addr); |
8e86c98a JA |
1403 | if (!tip) |
1404 | return 1; | |
1405 | ||
1406 | if (mmap_subbuf(tip, bnh.len)) | |
1407 | return 1; | |
1408 | ||
1409 | return 0; | |
1410 | } | |
1411 | ||
1412 | /* | |
1413 | * Start here when we are in server mode - just fetch data from the network | |
1414 | * and dump to files | |
1415 | */ | |
1416 | static int net_server(void) | |
1417 | { | |
898bbd3b JA |
1418 | struct device_information *dip; |
1419 | struct thread_information *tip; | |
8e86c98a JA |
1420 | struct sockaddr_in addr; |
1421 | socklen_t socklen; | |
22cd0c02 | 1422 | int fd, opt, i, j; |
8e86c98a JA |
1423 | |
1424 | fd = socket(AF_INET, SOCK_STREAM, 0); | |
1425 | if (fd < 0) { | |
1426 | perror("server: socket"); | |
1427 | return 1; | |
1428 | } | |
1429 | ||
1430 | opt = 1; | |
1431 | if (setsockopt(fd, SOL_SOCKET, SO_REUSEADDR, &opt, sizeof(opt)) < 0) { | |
1432 | perror("setsockopt"); | |
1433 | return 1; | |
1434 | } | |
1435 | ||
1436 | memset(&addr, 0, sizeof(addr)); | |
1437 | addr.sin_family = AF_INET; | |
1438 | addr.sin_addr.s_addr = htonl(INADDR_ANY); | |
1439 | addr.sin_port = htons(net_port); | |
1440 | ||
1441 | if (bind(fd, (struct sockaddr *) &addr, sizeof(addr)) < 0) { | |
1442 | perror("bind"); | |
1443 | return 1; | |
1444 | } | |
1445 | ||
1446 | if (listen(fd, 1) < 0) { | |
1447 | perror("listen"); | |
1448 | return 1; | |
1449 | } | |
1450 | ||
6a752c90 | 1451 | repeat: |
bbb1c18a JA |
1452 | signal(SIGINT, NULL); |
1453 | signal(SIGHUP, NULL); | |
1454 | signal(SIGTERM, NULL); | |
1455 | signal(SIGALRM, NULL); | |
1456 | ||
8e86c98a JA |
1457 | printf("blktrace: waiting for incoming connection...\n"); |
1458 | ||
1459 | socklen = sizeof(addr); | |
1460 | net_in_fd = accept(fd, (struct sockaddr *) &addr, &socklen); | |
1461 | if (net_in_fd < 0) { | |
1462 | perror("accept"); | |
1463 | return 1; | |
1464 | } | |
1465 | ||
1466 | signal(SIGINT, handle_sigint); | |
1467 | signal(SIGHUP, handle_sigint); | |
1468 | signal(SIGTERM, handle_sigint); | |
1469 | signal(SIGALRM, handle_sigint); | |
1470 | ||
e85ee0f2 | 1471 | printf("blktrace: connection from %s\n", inet_ntoa(addr.sin_addr)); |
8e86c98a JA |
1472 | |
1473 | while (!is_done()) { | |
e3bf54d8 | 1474 | if (net_server_loop(&addr.sin_addr)) |
8e86c98a JA |
1475 | break; |
1476 | } | |
1477 | ||
898bbd3b JA |
1478 | for_each_dip(dip, i) |
1479 | for_each_tip(dip, tip, j) | |
1480 | tip_ftrunc_final(tip); | |
8e86c98a | 1481 | |
410d7c62 | 1482 | show_stats(); |
6a752c90 JA |
1483 | |
1484 | if (is_done()) | |
1485 | return 0; | |
1486 | ||
898bbd3b JA |
1487 | /* |
1488 | * cleanup for next run | |
1489 | */ | |
1490 | for_each_dip(dip, i) { | |
1491 | for_each_tip(dip, tip, j) | |
1492 | fclose(tip->ofile); | |
1493 | ||
1494 | free(dip->threads); | |
921b05fe | 1495 | free(dip->path); |
898bbd3b JA |
1496 | } |
1497 | ||
1498 | free(device_information); | |
1499 | device_information = NULL; | |
1500 | ncpus = ndevs = 0; | |
b46a0342 JA |
1501 | |
1502 | close(net_in_fd); | |
1503 | net_in_fd = -1; | |
dbfbd6db | 1504 | stat_shown = 0; |
6a752c90 | 1505 | goto repeat; |
8e86c98a JA |
1506 | } |
1507 | ||
1508 | /* | |
1509 | * Setup outgoing network connection where we will transmit data | |
1510 | */ | |
1511 | static int net_setup_client(void) | |
1512 | { | |
1513 | struct sockaddr_in addr; | |
1514 | int fd; | |
1515 | ||
1516 | fd = socket(AF_INET, SOCK_STREAM, 0); | |
1517 | if (fd < 0) { | |
1518 | perror("client: socket"); | |
1519 | return 1; | |
1520 | } | |
1521 | ||
1522 | memset(&addr, 0, sizeof(addr)); | |
1523 | addr.sin_family = AF_INET; | |
1524 | addr.sin_port = htons(net_port); | |
1525 | ||
1526 | if (inet_aton(hostname, &addr.sin_addr) != 1) { | |
1527 | struct hostent *hent = gethostbyname(hostname); | |
1528 | if (!hent) { | |
1529 | perror("gethostbyname"); | |
1530 | return 1; | |
1531 | } | |
1532 | ||
1533 | memcpy(&addr.sin_addr, hent->h_addr, 4); | |
1534 | strcpy(hostname, hent->h_name); | |
1535 | } | |
1536 | ||
1537 | printf("blktrace: connecting to %s\n", hostname); | |
1538 | ||
1539 | if (connect(fd, (struct sockaddr *) &addr, sizeof(addr)) < 0) { | |
1540 | perror("client: connect"); | |
1541 | return 1; | |
1542 | } | |
1543 | ||
1544 | printf("blktrace: connected!\n"); | |
1545 | net_out_fd = fd; | |
1546 | return 0; | |
1547 | } | |
1548 | ||
52724a0e JA |
1549 | static char usage_str[] = \ |
1550 | "-d <dev> [ -r relay path ] [ -o <output> ] [-k ] [ -w time ]\n" \ | |
1551 | "[ -a action ] [ -A action mask ] [ -v ]\n\n" \ | |
1552 | "\t-d Use specified device. May also be given last after options\n" \ | |
1553 | "\t-r Path to mounted relayfs, defaults to /relay\n" \ | |
1554 | "\t-o File(s) to send output to\n" \ | |
d1d7f15f | 1555 | "\t-D Directory to prepend to output file names\n" \ |
52724a0e JA |
1556 | "\t-k Kill a running trace\n" \ |
1557 | "\t-w Stop after defined time, in seconds\n" \ | |
1558 | "\t-a Only trace specified actions. See documentation\n" \ | |
1559 | "\t-A Give trace mask as a single value. See documentation\n" \ | |
129aa440 JA |
1560 | "\t-b Sub buffer size in KiB\n" \ |
1561 | "\t-n Number of sub buffers\n" \ | |
f531b94d JA |
1562 | "\t-l Run in network listen mode (blktrace server)\n" \ |
1563 | "\t-h Run in network client mode, connecting to the given host\n" \ | |
1564 | "\t-p Network port to use (default 8462)\n" \ | |
1565 | "\t-s Make the network client use sendfile() to transfer data\n" \ | |
1566 | "\t-V Print program version info\n\n"; | |
52724a0e | 1567 | |
ee1f4158 NS |
1568 | static void show_usage(char *program) |
1569 | { | |
52724a0e | 1570 | fprintf(stderr, "Usage: %s %s %s",program, blktrace_version, usage_str); |
ee1f4158 | 1571 | } |
d0ca268b JA |
1572 | |
1573 | int main(int argc, char *argv[]) | |
1574 | { | |
5270dddd | 1575 | static char default_relay_path[] = "/relay"; |
e3e74029 | 1576 | struct statfs st; |
d39c04ca | 1577 | int i, c; |
ece238a6 | 1578 | int stop_watch = 0; |
d39c04ca AB |
1579 | int act_mask_tmp = 0; |
1580 | ||
1581 | while ((c = getopt_long(argc, argv, S_OPTS, l_opts, NULL)) >= 0) { | |
1582 | switch (c) { | |
1583 | case 'a': | |
1584 | i = find_mask_map(optarg); | |
1585 | if (i < 0) { | |
ab197ca7 | 1586 | fprintf(stderr,"Invalid action mask %s\n", |
d39c04ca | 1587 | optarg); |
7425d456 | 1588 | return 1; |
d39c04ca AB |
1589 | } |
1590 | act_mask_tmp |= i; | |
1591 | break; | |
1592 | ||
1593 | case 'A': | |
98f8386b AB |
1594 | if ((sscanf(optarg, "%x", &i) != 1) || |
1595 | !valid_act_opt(i)) { | |
d39c04ca | 1596 | fprintf(stderr, |
ab197ca7 | 1597 | "Invalid set action mask %s/0x%x\n", |
d39c04ca | 1598 | optarg, i); |
7425d456 | 1599 | return 1; |
d39c04ca AB |
1600 | } |
1601 | act_mask_tmp = i; | |
1602 | break; | |
d0ca268b | 1603 | |
d39c04ca | 1604 | case 'd': |
e7c9f3ff NS |
1605 | if (resize_devices(optarg) != 0) |
1606 | return 1; | |
d39c04ca AB |
1607 | break; |
1608 | ||
5270dddd JA |
1609 | case 'r': |
1610 | relay_path = optarg; | |
1611 | break; | |
1612 | ||
d5396421 | 1613 | case 'o': |
66efebf8 | 1614 | output_name = optarg; |
d5396421 | 1615 | break; |
bc39777c JA |
1616 | case 'k': |
1617 | kill_running_trace = 1; | |
1618 | break; | |
ece238a6 NS |
1619 | case 'w': |
1620 | stop_watch = atoi(optarg); | |
1621 | if (stop_watch <= 0) { | |
1622 | fprintf(stderr, | |
1623 | "Invalid stopwatch value (%d secs)\n", | |
1624 | stop_watch); | |
1625 | return 1; | |
1626 | } | |
1627 | break; | |
57ea8602 | 1628 | case 'V': |
52724a0e JA |
1629 | printf("%s version %s\n", argv[0], blktrace_version); |
1630 | return 0; | |
129aa440 | 1631 | case 'b': |
eb3c8108 | 1632 | buf_size = strtoul(optarg, NULL, 10); |
183a0855 | 1633 | if (buf_size <= 0 || buf_size > 16*1024) { |
129aa440 | 1634 | fprintf(stderr, |
eb3c8108 | 1635 | "Invalid buffer size (%lu)\n",buf_size); |
129aa440 JA |
1636 | return 1; |
1637 | } | |
1638 | buf_size <<= 10; | |
1639 | break; | |
1640 | case 'n': | |
eb3c8108 | 1641 | buf_nr = strtoul(optarg, NULL, 10); |
129aa440 JA |
1642 | if (buf_nr <= 0) { |
1643 | fprintf(stderr, | |
eb3c8108 | 1644 | "Invalid buffer nr (%lu)\n", buf_nr); |
129aa440 JA |
1645 | return 1; |
1646 | } | |
1647 | break; | |
d1d7f15f JA |
1648 | case 'D': |
1649 | output_dir = optarg; | |
1650 | break; | |
8e86c98a JA |
1651 | case 'h': |
1652 | net_mode = Net_client; | |
1653 | strcpy(hostname, optarg); | |
1654 | break; | |
1655 | case 'l': | |
1656 | net_mode = Net_server; | |
1657 | break; | |
1658 | case 'p': | |
1659 | net_port = atoi(optarg); | |
1660 | break; | |
32f18c48 JA |
1661 | case 's': |
1662 | net_sendfile = 1; | |
1663 | break; | |
d39c04ca | 1664 | default: |
ee1f4158 | 1665 | show_usage(argv[0]); |
7425d456 | 1666 | return 1; |
d39c04ca AB |
1667 | } |
1668 | } | |
1669 | ||
8e86c98a JA |
1670 | setlocale(LC_NUMERIC, "en_US"); |
1671 | ||
1672 | page_size = getpagesize(); | |
1673 | ||
1674 | if (net_mode == Net_server) | |
1675 | return net_server(); | |
1676 | ||
22cd0c02 JA |
1677 | while (optind < argc) { |
1678 | if (resize_devices(argv[optind++]) != 0) | |
1679 | return 1; | |
1680 | } | |
1681 | ||
e7c9f3ff | 1682 | if (ndevs == 0) { |
ee1f4158 | 1683 | show_usage(argv[0]); |
7425d456 | 1684 | return 1; |
d39c04ca AB |
1685 | } |
1686 | ||
5270dddd JA |
1687 | if (!relay_path) |
1688 | relay_path = default_relay_path; | |
1689 | ||
d5396421 | 1690 | if (act_mask_tmp != 0) |
d39c04ca | 1691 | act_mask = act_mask_tmp; |
d0ca268b | 1692 | |
e3e74029 NS |
1693 | if (statfs(relay_path, &st) < 0) { |
1694 | perror("statfs"); | |
1695 | fprintf(stderr,"%s does not appear to be a valid path\n", | |
1696 | relay_path); | |
1697 | return 1; | |
64acacae | 1698 | } else if (st.f_type != (long) RELAYFS_TYPE) { |
e3e74029 | 1699 | fprintf(stderr,"%s does not appear to be a relay filesystem\n", |
d0ca268b | 1700 | relay_path); |
7425d456 | 1701 | return 1; |
d0ca268b JA |
1702 | } |
1703 | ||
e7c9f3ff | 1704 | if (open_devices() != 0) |
7425d456 | 1705 | return 1; |
bc39777c JA |
1706 | |
1707 | if (kill_running_trace) { | |
e7c9f3ff | 1708 | stop_all_traces(); |
7425d456 | 1709 | return 0; |
bc39777c JA |
1710 | } |
1711 | ||
e7c9f3ff NS |
1712 | ncpus = sysconf(_SC_NPROCESSORS_ONLN); |
1713 | if (ncpus < 0) { | |
1714 | fprintf(stderr, "sysconf(_SC_NPROCESSORS_ONLN) failed\n"); | |
7425d456 | 1715 | return 1; |
d0ca268b JA |
1716 | } |
1717 | ||
d0ca268b JA |
1718 | signal(SIGINT, handle_sigint); |
1719 | signal(SIGHUP, handle_sigint); | |
1720 | signal(SIGTERM, handle_sigint); | |
ece238a6 | 1721 | signal(SIGALRM, handle_sigint); |
d0ca268b | 1722 | |
8e86c98a JA |
1723 | if (net_mode == Net_client && net_setup_client()) |
1724 | return 1; | |
1725 | ||
1726 | if (start_devices() != 0) | |
1727 | return 1; | |
1728 | ||
e7c9f3ff | 1729 | atexit(stop_all_tracing); |
830fd65c | 1730 | |
ece238a6 NS |
1731 | if (stop_watch) |
1732 | alarm(stop_watch); | |
1733 | ||
b7106311 | 1734 | wait_for_threads(); |
d0ca268b | 1735 | |
eb3c8108 JA |
1736 | if (!is_trace_stopped()) { |
1737 | trace_stopped = 1; | |
91816d54 JA |
1738 | stop_all_threads(); |
1739 | stop_all_traces(); | |
91816d54 | 1740 | } |
d0ca268b | 1741 | |
eb3c8108 JA |
1742 | show_stats(); |
1743 | ||
d0ca268b JA |
1744 | return 0; |
1745 | } | |
1746 |