Commit | Line | Data |
---|---|---|
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) { | |
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 | ||
11eedd9b JA |
345 | static size_t get_subbuf_padding(struct thread_information *tip, |
346 | unsigned subbuf) | |
347 | { | |
348 | size_t padding_size = buf_nr * sizeof(size_t); | |
349 | size_t ret; | |
350 | ||
351 | if (read(tip->pfd, tip->pfd_buf, padding_size) < 0) { | |
352 | perror("tip pad read"); | |
353 | ret = -1; | |
354 | } else | |
355 | ret = tip->pfd_buf[subbuf]; | |
356 | ||
357 | return ret; | |
358 | } | |
359 | ||
e7c9f3ff | 360 | static int start_trace(struct device_information *dip) |
d0ca268b JA |
361 | { |
362 | struct blk_user_trace_setup buts; | |
363 | ||
1f79c4a0 | 364 | memset(&buts, 0, sizeof(buts)); |
129aa440 JA |
365 | buts.buf_size = buf_size; |
366 | buts.buf_nr = buf_nr; | |
d39c04ca | 367 | buts.act_mask = act_mask; |
d0ca268b | 368 | |
ed71a31e JA |
369 | if (ioctl(dip->fd, BLKTRACESETUP, &buts) < 0) { |
370 | perror("BLKTRACESETUP"); | |
371 | return 1; | |
372 | } | |
373 | ||
374 | if (ioctl(dip->fd, BLKTRACESTART) < 0) { | |
375 | perror("BLKTRACESTART"); | |
d0ca268b JA |
376 | return 1; |
377 | } | |
378 | ||
e7c9f3ff | 379 | memcpy(dip->buts_name, buts.name, sizeof(dip->buts_name)); |
99c1f5ab | 380 | dip_set_tracing(dip, 1); |
d0ca268b JA |
381 | return 0; |
382 | } | |
383 | ||
e7c9f3ff | 384 | static void stop_trace(struct device_information *dip) |
d0ca268b | 385 | { |
99c1f5ab JA |
386 | if (dip_tracing(dip) || kill_running_trace) { |
387 | dip_set_tracing(dip, 0); | |
cf9208ea | 388 | |
7035d92d JA |
389 | /* |
390 | * should be stopped, just don't complain if it isn't | |
391 | */ | |
392 | ioctl(dip->fd, BLKTRACESTOP); | |
393 | ||
ed71a31e JA |
394 | if (ioctl(dip->fd, BLKTRACETEARDOWN) < 0) |
395 | perror("BLKTRACETEARDOWN"); | |
cf9208ea | 396 | |
e7c9f3ff | 397 | close(dip->fd); |
cf9208ea | 398 | dip->fd = -1; |
707b0914 | 399 | } |
d0ca268b JA |
400 | } |
401 | ||
e7c9f3ff NS |
402 | static void stop_all_traces(void) |
403 | { | |
404 | struct device_information *dip; | |
405 | int i; | |
406 | ||
eb3c8108 JA |
407 | for_each_dip(dip, i) { |
408 | dip->drop_count = get_dropped_count(dip->buts_name); | |
e7c9f3ff | 409 | stop_trace(dip); |
eb3c8108 | 410 | } |
e7c9f3ff NS |
411 | } |
412 | ||
eb3c8108 JA |
413 | static void wait_for_data(struct thread_information *tip) |
414 | { | |
415 | struct pollfd pfd = { .fd = tip->fd, .events = POLLIN }; | |
416 | ||
9db17354 | 417 | do { |
b4aabcb3 | 418 | poll(&pfd, 1, 100); |
9db17354 JA |
419 | if (pfd.revents & POLLIN) |
420 | break; | |
421 | if (tip->ofile_stdout) | |
422 | break; | |
423 | } while (!is_done()); | |
eb3c8108 JA |
424 | } |
425 | ||
0cc7d25e JA |
426 | static int read_data_file(struct thread_information *tip, void *buf, |
427 | unsigned int len) | |
d0ca268b | 428 | { |
ae9f71b3 | 429 | int ret = 0; |
bbabf03a | 430 | |
9db17354 JA |
431 | do { |
432 | wait_for_data(tip); | |
ae9f71b3 | 433 | |
9db17354 JA |
434 | ret = read(tip->fd, buf, len); |
435 | if (!ret) | |
436 | continue; | |
437 | else if (ret > 0) | |
438 | return ret; | |
439 | else { | |
bbabf03a | 440 | if (errno != EAGAIN) { |
a3e4d330 JA |
441 | perror(tip->fn); |
442 | fprintf(stderr,"Thread %d failed read of %s\n", | |
443 | tip->cpu, tip->fn); | |
444 | break; | |
445 | } | |
9db17354 | 446 | continue; |
bbabf03a | 447 | } |
9db17354 | 448 | } while (!is_done()); |
8a43bac5 | 449 | |
bbabf03a | 450 | return ret; |
8e86c98a | 451 | |
8a43bac5 JA |
452 | } |
453 | ||
0cc7d25e JA |
454 | static int read_data_net(struct thread_information *tip, void *buf, |
455 | unsigned int len) | |
8e86c98a JA |
456 | { |
457 | unsigned int bytes_left = len; | |
458 | int ret = 0; | |
459 | ||
460 | do { | |
461 | ret = recv(net_in_fd, buf, bytes_left, MSG_WAITALL); | |
462 | ||
463 | if (!ret) | |
464 | continue; | |
465 | else if (ret < 0) { | |
466 | if (errno != EAGAIN) { | |
467 | perror(tip->fn); | |
468 | fprintf(stderr, "server: failed read\n"); | |
469 | return 0; | |
470 | } | |
471 | continue; | |
472 | } else { | |
473 | buf += ret; | |
474 | bytes_left -= ret; | |
475 | } | |
476 | } while (!is_done() && bytes_left); | |
477 | ||
410d7c62 | 478 | return len - bytes_left; |
8e86c98a JA |
479 | } |
480 | ||
0cc7d25e JA |
481 | static int read_data(struct thread_information *tip, void *buf, |
482 | unsigned int len) | |
8e86c98a | 483 | { |
663962f7 | 484 | return tip->read_data(tip, buf, len); |
8e86c98a JA |
485 | } |
486 | ||
487 | static inline struct tip_subbuf * | |
488 | subbuf_fifo_dequeue(struct thread_information *tip) | |
a3e4d330 | 489 | { |
21f55651 JA |
490 | const int head = tip->fifo.head; |
491 | const int next = (head + 1) & (FIFO_SIZE - 1); | |
492 | ||
493 | if (head != tip->fifo.tail) { | |
494 | struct tip_subbuf *ts = tip->fifo.q[head]; | |
495 | ||
496 | store_barrier(); | |
497 | tip->fifo.head = next; | |
498 | return ts; | |
499 | } | |
500 | ||
501 | return NULL; | |
9db17354 | 502 | } |
eb3c8108 | 503 | |
21f55651 JA |
504 | static inline int subbuf_fifo_queue(struct thread_information *tip, |
505 | struct tip_subbuf *ts) | |
9db17354 | 506 | { |
21f55651 JA |
507 | const int tail = tip->fifo.tail; |
508 | const int next = (tail + 1) & (FIFO_SIZE - 1); | |
509 | ||
510 | if (next != tip->fifo.head) { | |
511 | tip->fifo.q[tail] = ts; | |
512 | store_barrier(); | |
513 | tip->fifo.tail = next; | |
514 | return 0; | |
515 | } | |
516 | ||
517 | fprintf(stderr, "fifo too small!\n"); | |
518 | return 1; | |
a3e4d330 JA |
519 | } |
520 | ||
b7106311 JA |
521 | /* |
522 | * For file output, truncate and mmap the file appropriately | |
523 | */ | |
8e86c98a | 524 | static int mmap_subbuf(struct thread_information *tip, unsigned int maxlen) |
b7106311 JA |
525 | { |
526 | int ofd = fileno(tip->ofile); | |
527 | int ret; | |
528 | ||
529 | /* | |
530 | * extend file, if we have to. use chunks of 16 subbuffers. | |
531 | */ | |
532 | if (tip->fs_off + buf_size > tip->fs_buf_len) { | |
533 | if (tip->fs_buf) { | |
5975d309 | 534 | munlock(tip->fs_buf, tip->fs_buf_len); |
b7106311 JA |
535 | munmap(tip->fs_buf, tip->fs_buf_len); |
536 | tip->fs_buf = NULL; | |
537 | } | |
538 | ||
539 | tip->fs_off = tip->fs_size & (page_size - 1); | |
540 | tip->fs_buf_len = (16 * buf_size) - tip->fs_off; | |
541 | tip->fs_max_size += tip->fs_buf_len; | |
542 | ||
543 | if (ftruncate(ofd, tip->fs_max_size) < 0) { | |
544 | perror("ftruncate"); | |
545 | return -1; | |
546 | } | |
547 | ||
548 | tip->fs_buf = mmap(NULL, tip->fs_buf_len, PROT_WRITE, | |
549 | MAP_SHARED, ofd, tip->fs_size - tip->fs_off); | |
550 | if (tip->fs_buf == MAP_FAILED) { | |
551 | perror("mmap"); | |
552 | return -1; | |
553 | } | |
5975d309 | 554 | mlock(tip->fs_buf, tip->fs_buf_len); |
b7106311 JA |
555 | } |
556 | ||
8e86c98a | 557 | ret = read_data(tip, tip->fs_buf + tip->fs_off, maxlen); |
b7106311 | 558 | if (ret >= 0) { |
dbfbd6db | 559 | tip->data_read += ret; |
b7106311 JA |
560 | tip->fs_size += ret; |
561 | tip->fs_off += ret; | |
562 | return 0; | |
563 | } | |
564 | ||
565 | return -1; | |
566 | } | |
567 | ||
18eed2a7 JA |
568 | /* |
569 | * Use the copy approach for pipes and network | |
570 | */ | |
571 | static int get_subbuf(struct thread_information *tip, unsigned int maxlen) | |
572 | { | |
573 | struct tip_subbuf *ts = malloc(sizeof(*ts)); | |
574 | int ret; | |
575 | ||
576 | ts->buf = malloc(buf_size); | |
577 | ts->max_len = maxlen; | |
578 | ||
579 | ret = read_data(tip, ts->buf, ts->max_len); | |
580 | if (ret > 0) { | |
581 | ts->len = ret; | |
dbfbd6db | 582 | tip->data_read += ret; |
7035d92d JA |
583 | if (subbuf_fifo_queue(tip, ts)) |
584 | return -1; | |
18eed2a7 JA |
585 | } |
586 | ||
587 | return ret; | |
588 | } | |
589 | ||
32f18c48 JA |
590 | static int get_subbuf_sendfile(struct thread_information *tip, |
591 | unsigned int maxlen) | |
592 | { | |
11eedd9b | 593 | struct tip_subbuf *ts; |
32f18c48 | 594 | struct stat sb; |
7035d92d | 595 | unsigned int ready, this_size, total; |
32f18c48 | 596 | |
18eed2a7 JA |
597 | wait_for_data(tip); |
598 | ||
599 | /* | |
600 | * hack to get last data out, we can't use sendfile for that | |
601 | */ | |
602 | if (is_done()) | |
603 | return get_subbuf(tip, maxlen); | |
604 | ||
32f18c48 JA |
605 | if (fstat(tip->fd, &sb) < 0) { |
606 | perror("trace stat"); | |
7035d92d | 607 | return -1; |
32f18c48 JA |
608 | } |
609 | ||
11eedd9b | 610 | ready = sb.st_size - tip->ofile_offset; |
663962f7 JA |
611 | if (!ready) { |
612 | /* | |
7035d92d | 613 | * delay a little, since poll() will return data available |
663962f7 JA |
614 | * until sendfile() is run |
615 | */ | |
616 | usleep(100); | |
11eedd9b | 617 | return 0; |
663962f7 | 618 | } |
11eedd9b | 619 | |
1be42f3d | 620 | this_size = buf_size; |
7035d92d | 621 | total = ready; |
11eedd9b | 622 | while (ready) { |
1be42f3d JA |
623 | if (this_size > ready) |
624 | this_size = ready; | |
625 | ||
11eedd9b JA |
626 | ts = malloc(sizeof(*ts)); |
627 | ||
11eedd9b | 628 | ts->buf = NULL; |
7035d92d | 629 | ts->max_len = 0; |
11eedd9b | 630 | |
1be42f3d | 631 | ts->len = this_size; |
11eedd9b JA |
632 | ts->offset = tip->ofile_offset; |
633 | tip->ofile_offset += ts->len; | |
634 | ||
7035d92d JA |
635 | if (subbuf_fifo_queue(tip, ts)) |
636 | return -1; | |
11eedd9b | 637 | |
1be42f3d | 638 | ready -= this_size; |
11eedd9b JA |
639 | } |
640 | ||
7035d92d | 641 | return total; |
32f18c48 JA |
642 | } |
643 | ||
9db17354 | 644 | static void close_thread(struct thread_information *tip) |
a3e4d330 | 645 | { |
9db17354 JA |
646 | if (tip->fd != -1) |
647 | close(tip->fd); | |
11eedd9b JA |
648 | if (tip->pfd != -1) |
649 | close(tip->pfd); | |
9db17354 JA |
650 | if (tip->ofile) |
651 | fclose(tip->ofile); | |
652 | if (tip->ofile_buffer) | |
653 | free(tip->ofile_buffer); | |
654 | if (tip->fd_buf) | |
655 | free(tip->fd_buf); | |
11eedd9b JA |
656 | if (tip->pfd_buf) |
657 | free(tip->pfd_buf); | |
1c99bc21 | 658 | |
9db17354 | 659 | tip->fd = -1; |
11eedd9b | 660 | tip->pfd = -1; |
9db17354 JA |
661 | tip->ofile = NULL; |
662 | tip->ofile_buffer = NULL; | |
663 | tip->fd_buf = NULL; | |
a3e4d330 JA |
664 | } |
665 | ||
8e86c98a JA |
666 | static void tip_ftrunc_final(struct thread_information *tip) |
667 | { | |
668 | /* | |
669 | * truncate to right size and cleanup mmap | |
670 | */ | |
671 | if (tip->ofile_mmap) { | |
672 | int ofd = fileno(tip->ofile); | |
673 | ||
674 | if (tip->fs_buf) | |
675 | munmap(tip->fs_buf, tip->fs_buf_len); | |
676 | ||
677 | ftruncate(ofd, tip->fs_size); | |
678 | } | |
679 | } | |
680 | ||
9db17354 | 681 | static void *thread_main(void *arg) |
a3e4d330 | 682 | { |
9db17354 JA |
683 | struct thread_information *tip = arg; |
684 | pid_t pid = getpid(); | |
685 | cpu_set_t cpu_mask; | |
a3e4d330 | 686 | |
9db17354 JA |
687 | CPU_ZERO(&cpu_mask); |
688 | CPU_SET((tip->cpu), &cpu_mask); | |
a3e4d330 | 689 | |
9db17354 JA |
690 | if (sched_setaffinity(pid, sizeof(cpu_mask), &cpu_mask) == -1) { |
691 | perror("sched_setaffinity"); | |
692 | exit_trace(1); | |
693 | } | |
a3e4d330 | 694 | |
9db17354 JA |
695 | snprintf(tip->fn, sizeof(tip->fn), "%s/block/%s/trace%d", |
696 | relay_path, tip->device->buts_name, tip->cpu); | |
697 | tip->fd = open(tip->fn, O_RDONLY); | |
698 | if (tip->fd < 0) { | |
699 | perror(tip->fn); | |
700 | fprintf(stderr,"Thread %d failed open of %s\n", tip->cpu, | |
701 | tip->fn); | |
702 | exit_trace(1); | |
a3e4d330 JA |
703 | } |
704 | ||
11eedd9b JA |
705 | if (net_mode == Net_client && net_sendfile) { |
706 | char tmp[MAXPATHLEN + 64]; | |
707 | ||
708 | snprintf(tmp, sizeof(tmp), "%s/block/%s/trace%d.padding", | |
709 | relay_path, tip->device->buts_name, tip->cpu); | |
710 | ||
711 | tip->pfd = open(tmp, O_RDONLY); | |
712 | if (tip->pfd < 0) { | |
713 | fprintf(stderr, "Couldn't open padding file %s\n", tmp); | |
714 | exit_trace(1); | |
715 | } | |
716 | ||
717 | tip->pfd_buf = malloc(buf_nr * sizeof(size_t)); | |
718 | } | |
719 | ||
b7106311 | 720 | while (!is_done()) { |
7035d92d | 721 | if (tip->get_subbuf(tip, buf_size) < 0) |
0cc7d25e | 722 | break; |
b7106311 JA |
723 | } |
724 | ||
7035d92d JA |
725 | /* |
726 | * trace is stopped, pull data until we get a short read | |
727 | */ | |
728 | while (tip->get_subbuf(tip, buf_size) > 0) | |
729 | ; | |
730 | ||
8e86c98a JA |
731 | tip_ftrunc_final(tip); |
732 | tip->exited = 1; | |
733 | return NULL; | |
734 | } | |
b7106311 | 735 | |
8e86c98a JA |
736 | static int write_data_net(int fd, void *buf, unsigned int buf_len) |
737 | { | |
738 | unsigned int bytes_left = buf_len; | |
739 | int ret; | |
b7106311 | 740 | |
8e86c98a JA |
741 | while (bytes_left) { |
742 | ret = send(fd, buf, bytes_left, 0); | |
743 | if (ret < 0) { | |
744 | perror("send"); | |
745 | return 1; | |
746 | } | |
747 | ||
748 | buf += ret; | |
749 | bytes_left -= ret; | |
9db17354 | 750 | } |
a3e4d330 | 751 | |
8e86c98a | 752 | return 0; |
a3e4d330 JA |
753 | } |
754 | ||
32f18c48 | 755 | static int net_send_header(struct thread_information *tip, unsigned int len) |
8e86c98a JA |
756 | { |
757 | struct blktrace_net_hdr hdr; | |
8e86c98a JA |
758 | |
759 | hdr.magic = BLK_IO_TRACE_MAGIC; | |
22cd0c02 | 760 | strcpy(hdr.buts_name, tip->device->buts_name); |
8e86c98a | 761 | hdr.cpu = tip->cpu; |
22cd0c02 | 762 | hdr.max_cpus = ncpus; |
32f18c48 | 763 | hdr.len = len; |
8e86c98a | 764 | |
32f18c48 JA |
765 | return write_data_net(net_out_fd, &hdr, sizeof(hdr)); |
766 | } | |
8e86c98a | 767 | |
6a752c90 JA |
768 | /* |
769 | * send header with 0 length to signal end-of-run | |
770 | */ | |
771 | static void net_client_send_close(void) | |
772 | { | |
773 | struct blktrace_net_hdr hdr; | |
774 | ||
775 | hdr.magic = BLK_IO_TRACE_MAGIC; | |
776 | hdr.cpu = 0; | |
777 | hdr.max_cpus = ncpus; | |
778 | hdr.len = 0; | |
779 | ||
780 | write_data_net(net_out_fd, &hdr, sizeof(hdr)); | |
781 | } | |
782 | ||
32f18c48 JA |
783 | static int flush_subbuf_net(struct thread_information *tip, |
784 | struct tip_subbuf *ts) | |
785 | { | |
786 | if (net_send_header(tip, ts->len)) | |
787 | return 1; | |
22cd0c02 JA |
788 | if (write_data_net(net_out_fd, ts->buf, ts->len)) |
789 | return 1; | |
8e86c98a | 790 | |
f0597a7e | 791 | free(ts->buf); |
8e86c98a JA |
792 | free(ts); |
793 | return 0; | |
794 | } | |
795 | ||
32f18c48 JA |
796 | static int flush_subbuf_sendfile(struct thread_information *tip, |
797 | struct tip_subbuf *ts) | |
798 | { | |
11eedd9b JA |
799 | size_t padding; |
800 | unsigned subbuf; | |
801 | unsigned len; | |
18eed2a7 JA |
802 | |
803 | /* | |
804 | * currently we cannot use sendfile() on the last bytes read, as they | |
805 | * may not be a full subbuffer. get_subbuf_sendfile() falls back to | |
806 | * the read approach for those, so use send() to ship them out | |
807 | */ | |
808 | if (ts->buf) | |
809 | return flush_subbuf_net(tip, ts); | |
11eedd9b JA |
810 | |
811 | subbuf = (ts->offset / buf_size) % buf_nr; | |
812 | padding = get_subbuf_padding(tip, subbuf); | |
813 | len = ts->len - padding; | |
814 | ||
815 | if (net_send_header(tip, len)) | |
32f18c48 | 816 | return 1; |
11eedd9b | 817 | if (sendfile(net_out_fd, tip->fd, &ts->offset, len) < 0) { |
32f18c48 JA |
818 | perror("sendfile"); |
819 | return 1; | |
820 | } | |
821 | ||
112a166e | 822 | tip->data_read += len; |
32f18c48 JA |
823 | free(ts); |
824 | return 0; | |
825 | } | |
826 | ||
8e86c98a JA |
827 | static int write_data(struct thread_information *tip, void *buf, |
828 | unsigned int buf_len) | |
8a43bac5 | 829 | { |
7126171a | 830 | int ret; |
8a43bac5 | 831 | |
6480258a JA |
832 | if (!buf_len) |
833 | return 0; | |
834 | ||
7126171a JA |
835 | while (1) { |
836 | ret = fwrite(buf, buf_len, 1, tip->ofile); | |
007c233c | 837 | if (ret == 1) |
8a43bac5 JA |
838 | break; |
839 | ||
db6fe5bc JA |
840 | if (ret < 0) { |
841 | perror("write"); | |
842 | return 1; | |
8a43bac5 | 843 | } |
d0ca268b JA |
844 | } |
845 | ||
9db17354 | 846 | if (tip->ofile_stdout) |
7126171a JA |
847 | fflush(tip->ofile); |
848 | ||
8a43bac5 JA |
849 | return 0; |
850 | } | |
851 | ||
8e86c98a JA |
852 | static int flush_subbuf_file(struct thread_information *tip, |
853 | struct tip_subbuf *ts) | |
8a43bac5 | 854 | { |
9db17354 JA |
855 | unsigned int offset = 0; |
856 | struct blk_io_trace *t; | |
857 | int pdu_len, events = 0; | |
8a43bac5 | 858 | |
9db17354 | 859 | /* |
7de86b12 | 860 | * surplus from last run |
9db17354 | 861 | */ |
7de86b12 AB |
862 | if (tip->leftover_ts) { |
863 | struct tip_subbuf *prev_ts = tip->leftover_ts; | |
864 | ||
9e8b753c | 865 | if (prev_ts->len + ts->len > prev_ts->max_len) { |
7de86b12 AB |
866 | prev_ts->max_len += ts->len; |
867 | prev_ts->buf = realloc(prev_ts->buf, prev_ts->max_len); | |
868 | } | |
869 | ||
9e8b753c | 870 | memcpy(prev_ts->buf + prev_ts->len, ts->buf, ts->len); |
7de86b12 AB |
871 | prev_ts->len += ts->len; |
872 | ||
873 | free(ts->buf); | |
874 | free(ts); | |
875 | ||
876 | ts = prev_ts; | |
877 | tip->leftover_ts = NULL; | |
9db17354 | 878 | } |
d0ca268b | 879 | |
9db17354 JA |
880 | while (offset + sizeof(*t) <= ts->len) { |
881 | t = ts->buf + offset; | |
3a9d6c13 | 882 | |
9cfa6c2b AB |
883 | if (verify_trace(t)) { |
884 | write_data(tip, ts->buf, offset); | |
9db17354 | 885 | return -1; |
9cfa6c2b | 886 | } |
3a9d6c13 | 887 | |
9db17354 | 888 | pdu_len = t->pdu_len; |
3a9d6c13 | 889 | |
9db17354 | 890 | if (offset + sizeof(*t) + pdu_len > ts->len) |
3a9d6c13 | 891 | break; |
4b5db44a | 892 | |
9db17354 JA |
893 | offset += sizeof(*t) + pdu_len; |
894 | tip->events_processed++; | |
b7106311 | 895 | tip->data_read += sizeof(*t) + pdu_len; |
9db17354 | 896 | events++; |
3a9d6c13 JA |
897 | } |
898 | ||
9cfa6c2b AB |
899 | if (write_data(tip, ts->buf, offset)) |
900 | return -1; | |
901 | ||
3a9d6c13 | 902 | /* |
9db17354 | 903 | * leftover bytes, save them for next time |
3a9d6c13 | 904 | */ |
9db17354 | 905 | if (offset != ts->len) { |
7de86b12 | 906 | tip->leftover_ts = ts; |
9e8b753c JA |
907 | ts->len -= offset; |
908 | memmove(ts->buf, ts->buf + offset, ts->len); | |
7de86b12 AB |
909 | } else { |
910 | free(ts->buf); | |
911 | free(ts); | |
9db17354 | 912 | } |
4b5db44a | 913 | |
9db17354 | 914 | return events; |
4b5db44a JA |
915 | } |
916 | ||
9db17354 | 917 | static int write_tip_events(struct thread_information *tip) |
d5396421 | 918 | { |
21f55651 | 919 | struct tip_subbuf *ts = subbuf_fifo_dequeue(tip); |
d5396421 | 920 | |
0cc7d25e JA |
921 | if (ts) |
922 | return tip->flush_subbuf(tip, ts); | |
91816d54 | 923 | |
9db17354 | 924 | return 0; |
91816d54 JA |
925 | } |
926 | ||
9db17354 JA |
927 | /* |
928 | * scans the tips we know and writes out the subbuffers we accumulate | |
929 | */ | |
930 | static void get_and_write_events(void) | |
d0ca268b | 931 | { |
9db17354 JA |
932 | struct device_information *dip; |
933 | struct thread_information *tip; | |
27223f19 | 934 | int i, j, events, ret, tips_running; |
d0ca268b | 935 | |
9db17354 JA |
936 | while (!is_done()) { |
937 | events = 0; | |
d0ca268b | 938 | |
9db17354 JA |
939 | for_each_dip(dip, i) { |
940 | for_each_tip(dip, tip, j) { | |
941 | ret = write_tip_events(tip); | |
942 | if (ret > 0) | |
943 | events += ret; | |
944 | } | |
945 | } | |
d0ca268b | 946 | |
9db17354 JA |
947 | if (!events) |
948 | usleep(10); | |
d0ca268b JA |
949 | } |
950 | ||
a3e4d330 | 951 | /* |
9db17354 | 952 | * reap stored events |
a3e4d330 | 953 | */ |
9db17354 JA |
954 | do { |
955 | events = 0; | |
27223f19 | 956 | tips_running = 0; |
9db17354 JA |
957 | for_each_dip(dip, i) { |
958 | for_each_tip(dip, tip, j) { | |
959 | ret = write_tip_events(tip); | |
960 | if (ret > 0) | |
961 | events += ret; | |
27223f19 | 962 | tips_running += !tip->exited; |
9db17354 | 963 | } |
69e65a9e | 964 | } |
9db17354 | 965 | usleep(10); |
27223f19 | 966 | } while (events || tips_running); |
d0ca268b JA |
967 | } |
968 | ||
b7106311 JA |
969 | static void wait_for_threads(void) |
970 | { | |
971 | /* | |
8e86c98a JA |
972 | * for piped or network output, poll and fetch data for writeout. |
973 | * for files, we just wait around for trace threads to exit | |
b7106311 | 974 | */ |
8e86c98a JA |
975 | if ((output_name && !strcmp(output_name, "-")) || |
976 | net_mode == Net_client) | |
b7106311 JA |
977 | get_and_write_events(); |
978 | else { | |
979 | struct device_information *dip; | |
980 | struct thread_information *tip; | |
981 | int i, j, tips_running; | |
982 | ||
983 | do { | |
984 | tips_running = 0; | |
985 | usleep(1000); | |
986 | ||
987 | for_each_dip(dip, i) | |
988 | for_each_tip(dip, tip, j) | |
989 | tips_running += !tip->exited; | |
990 | } while (tips_running); | |
991 | } | |
6a752c90 JA |
992 | |
993 | if (net_mode == Net_client) | |
994 | net_client_send_close(); | |
b7106311 JA |
995 | } |
996 | ||
e3bf54d8 JA |
997 | static int fill_ofname(struct thread_information *tip, char *dst, |
998 | char *buts_name) | |
8e86c98a | 999 | { |
e3bf54d8 | 1000 | struct stat sb; |
8e86c98a | 1001 | int len = 0; |
e3bf54d8 | 1002 | time_t t; |
8e86c98a JA |
1003 | |
1004 | if (output_dir) | |
1005 | len = sprintf(dst, "%s/", output_dir); | |
1006 | ||
e3bf54d8 JA |
1007 | if (net_mode == Net_server) { |
1008 | len += sprintf(dst + len, "%s-", inet_ntoa(tip->cl_in_addr)); | |
1009 | time(&t); | |
1010 | len += strftime(dst + len, 64, "%F-%T/", gmtime(&t)); | |
1011 | } | |
1012 | ||
1013 | if (stat(dst, &sb) < 0) { | |
1014 | if (errno != ENOENT) { | |
1015 | perror("stat"); | |
1016 | return 1; | |
1017 | } | |
1018 | if (mkdir(dst, 0755) < 0) { | |
1019 | perror(dst); | |
1020 | fprintf(stderr, "Can't make output dir\n"); | |
1021 | return 1; | |
1022 | } | |
1023 | } | |
1024 | ||
8e86c98a | 1025 | if (output_name) |
e3bf54d8 | 1026 | sprintf(dst + len, "%s.blktrace.%d", output_name, tip->cpu); |
8e86c98a | 1027 | else |
e3bf54d8 JA |
1028 | sprintf(dst + len, "%s.blktrace.%d", buts_name, tip->cpu); |
1029 | ||
1030 | return 0; | |
8e86c98a JA |
1031 | } |
1032 | ||
0cc7d25e JA |
1033 | static void fill_ops(struct thread_information *tip) |
1034 | { | |
1035 | /* | |
1036 | * setup ops | |
1037 | */ | |
32f18c48 JA |
1038 | if (net_mode == Net_client) { |
1039 | if (net_sendfile) { | |
1040 | tip->get_subbuf = get_subbuf_sendfile; | |
1041 | tip->flush_subbuf = flush_subbuf_sendfile; | |
1042 | } else { | |
1043 | tip->get_subbuf = get_subbuf; | |
1044 | tip->flush_subbuf = flush_subbuf_net; | |
1045 | } | |
1046 | } else { | |
1047 | if (tip->ofile_mmap) | |
1048 | tip->get_subbuf = mmap_subbuf; | |
1049 | else | |
1050 | tip->get_subbuf = get_subbuf; | |
0cc7d25e | 1051 | |
0cc7d25e | 1052 | tip->flush_subbuf = flush_subbuf_file; |
32f18c48 JA |
1053 | } |
1054 | ||
0cc7d25e JA |
1055 | if (net_mode == Net_server) |
1056 | tip->read_data = read_data_net; | |
1057 | else | |
1058 | tip->read_data = read_data_file; | |
1059 | } | |
1060 | ||
ddf22842 JA |
1061 | static int tip_open_output(struct device_information *dip, |
1062 | struct thread_information *tip) | |
d0ca268b | 1063 | { |
ddf22842 | 1064 | int pipeline = output_name && !strcmp(output_name, "-"); |
8e86c98a | 1065 | int mode, vbuf_size; |
e3bf54d8 | 1066 | char op[128]; |
d0ca268b | 1067 | |
ddf22842 JA |
1068 | if (net_mode == Net_client) { |
1069 | tip->ofile = NULL; | |
1070 | tip->ofile_stdout = 0; | |
1071 | tip->ofile_mmap = 0; | |
1072 | vbuf_size = 0; | |
1be42f3d | 1073 | mode = 0; /* gcc 4.x issues a bogus warning */ |
ddf22842 JA |
1074 | } else if (pipeline) { |
1075 | tip->ofile = fdopen(STDOUT_FILENO, "w"); | |
1076 | tip->ofile_stdout = 1; | |
1077 | tip->ofile_mmap = 0; | |
1078 | mode = _IOLBF; | |
1079 | vbuf_size = 512; | |
1080 | } else { | |
e3bf54d8 JA |
1081 | if (fill_ofname(tip, op, dip->buts_name)) |
1082 | return 1; | |
ddf22842 JA |
1083 | tip->ofile = fopen(op, "w+"); |
1084 | tip->ofile_stdout = 0; | |
1085 | tip->ofile_mmap = 1; | |
1086 | mode = _IOFBF; | |
1087 | vbuf_size = OFILE_BUF; | |
1088 | } | |
d5396421 | 1089 | |
ddf22842 JA |
1090 | if (net_mode != Net_client && tip->ofile == NULL) { |
1091 | perror(op); | |
1092 | return 1; | |
1093 | } | |
d5396421 | 1094 | |
ddf22842 | 1095 | if (vbuf_size) { |
57e8a2ad TZ |
1096 | tip->ofile_buffer = malloc(vbuf_size); |
1097 | if (setvbuf(tip->ofile, tip->ofile_buffer, mode, vbuf_size)) { | |
007c233c JA |
1098 | perror("setvbuf"); |
1099 | close_thread(tip); | |
1100 | return 1; | |
1101 | } | |
ddf22842 JA |
1102 | } |
1103 | ||
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]; | |
1310 | strcpy(dip->buts_name, buts_name); | |
410d7c62 | 1311 | strcpy(dip->path, buts_name); |
22cd0c02 JA |
1312 | ndevs++; |
1313 | dip->threads = malloc(ncpus * sizeof(struct thread_information)); | |
1314 | memset(dip->threads, 0, ncpus * sizeof(struct thread_information)); | |
1315 | ||
1316 | /* | |
1317 | * open all files | |
1318 | */ | |
1319 | for (i = 0; i < ncpus; i++) { | |
1320 | struct thread_information *tip = &dip->threads[i]; | |
8e86c98a | 1321 | |
22cd0c02 | 1322 | tip->cpu = i; |
22cd0c02 | 1323 | tip->device = dip; |
1366e53a JA |
1324 | tip->fd = -1; |
1325 | tip->pfd = -1; | |
e3bf54d8 | 1326 | tip->cl_in_addr = *cl_in_addr; |
8e86c98a | 1327 | |
ddf22842 | 1328 | if (tip_open_output(dip, tip)) |
22cd0c02 | 1329 | return NULL; |
8e86c98a JA |
1330 | } |
1331 | ||
22cd0c02 JA |
1332 | return dip; |
1333 | } | |
1334 | ||
e3bf54d8 JA |
1335 | static struct thread_information *net_get_tip(struct blktrace_net_hdr *bnh, |
1336 | struct in_addr *cl_in_addr) | |
22cd0c02 JA |
1337 | { |
1338 | struct device_information *dip; | |
1339 | ||
1340 | ncpus = bnh->max_cpus; | |
e3bf54d8 | 1341 | dip = net_get_dip(bnh->buts_name, cl_in_addr); |
22cd0c02 | 1342 | return &dip->threads[bnh->cpu]; |
8e86c98a JA |
1343 | } |
1344 | ||
1345 | static int net_get_header(struct blktrace_net_hdr *bnh) | |
1346 | { | |
1347 | int fl = fcntl(net_in_fd, F_GETFL); | |
1348 | int bytes_left, ret; | |
1349 | void *p = bnh; | |
1350 | ||
1351 | fcntl(net_in_fd, F_SETFL, fl | O_NONBLOCK); | |
1352 | bytes_left = sizeof(*bnh); | |
1353 | while (bytes_left && !is_done()) { | |
1354 | ret = recv(net_in_fd, p, bytes_left, MSG_WAITALL); | |
1355 | if (ret < 0) { | |
1356 | if (errno != EAGAIN) { | |
1357 | perror("recv header"); | |
1358 | return 1; | |
1359 | } | |
1360 | usleep(100); | |
1361 | continue; | |
1362 | } else if (!ret) { | |
1363 | usleep(100); | |
1364 | continue; | |
1365 | } else { | |
1366 | p += ret; | |
1367 | bytes_left -= ret; | |
1368 | } | |
1369 | } | |
1370 | fcntl(net_in_fd, F_SETFL, fl & ~O_NONBLOCK); | |
1371 | return 0; | |
1372 | } | |
1373 | ||
e3bf54d8 | 1374 | static int net_server_loop(struct in_addr *cl_in_addr) |
8e86c98a JA |
1375 | { |
1376 | struct thread_information *tip; | |
1377 | struct blktrace_net_hdr bnh; | |
1378 | ||
1379 | if (net_get_header(&bnh)) | |
1380 | return 1; | |
1381 | ||
1382 | if (data_is_native == -1 && check_data_endianness(bnh.magic)) { | |
1383 | fprintf(stderr, "server: received data is bad\n"); | |
1384 | return 1; | |
1385 | } | |
1386 | ||
1387 | if (!data_is_native) { | |
1388 | bnh.cpu = be32_to_cpu(bnh.cpu); | |
1389 | bnh.len = be32_to_cpu(bnh.len); | |
1390 | } | |
1391 | ||
6a752c90 JA |
1392 | /* |
1393 | * len == 0 means that the other end signalled end-of-run | |
1394 | */ | |
1395 | if (!bnh.len) { | |
1396 | fprintf(stderr, "server: end of run\n"); | |
1397 | return 1; | |
1398 | } | |
1399 | ||
e3bf54d8 | 1400 | tip = net_get_tip(&bnh, cl_in_addr); |
8e86c98a JA |
1401 | if (!tip) |
1402 | return 1; | |
1403 | ||
1404 | if (mmap_subbuf(tip, bnh.len)) | |
1405 | return 1; | |
1406 | ||
1407 | return 0; | |
1408 | } | |
1409 | ||
1410 | /* | |
1411 | * Start here when we are in server mode - just fetch data from the network | |
1412 | * and dump to files | |
1413 | */ | |
1414 | static int net_server(void) | |
1415 | { | |
898bbd3b JA |
1416 | struct device_information *dip; |
1417 | struct thread_information *tip; | |
8e86c98a JA |
1418 | struct sockaddr_in addr; |
1419 | socklen_t socklen; | |
22cd0c02 | 1420 | int fd, opt, i, j; |
8e86c98a JA |
1421 | |
1422 | fd = socket(AF_INET, SOCK_STREAM, 0); | |
1423 | if (fd < 0) { | |
1424 | perror("server: socket"); | |
1425 | return 1; | |
1426 | } | |
1427 | ||
1428 | opt = 1; | |
1429 | if (setsockopt(fd, SOL_SOCKET, SO_REUSEADDR, &opt, sizeof(opt)) < 0) { | |
1430 | perror("setsockopt"); | |
1431 | return 1; | |
1432 | } | |
1433 | ||
1434 | memset(&addr, 0, sizeof(addr)); | |
1435 | addr.sin_family = AF_INET; | |
1436 | addr.sin_addr.s_addr = htonl(INADDR_ANY); | |
1437 | addr.sin_port = htons(net_port); | |
1438 | ||
1439 | if (bind(fd, (struct sockaddr *) &addr, sizeof(addr)) < 0) { | |
1440 | perror("bind"); | |
1441 | return 1; | |
1442 | } | |
1443 | ||
1444 | if (listen(fd, 1) < 0) { | |
1445 | perror("listen"); | |
1446 | return 1; | |
1447 | } | |
1448 | ||
6a752c90 | 1449 | repeat: |
bbb1c18a JA |
1450 | signal(SIGINT, NULL); |
1451 | signal(SIGHUP, NULL); | |
1452 | signal(SIGTERM, NULL); | |
1453 | signal(SIGALRM, NULL); | |
1454 | ||
8e86c98a JA |
1455 | printf("blktrace: waiting for incoming connection...\n"); |
1456 | ||
1457 | socklen = sizeof(addr); | |
1458 | net_in_fd = accept(fd, (struct sockaddr *) &addr, &socklen); | |
1459 | if (net_in_fd < 0) { | |
1460 | perror("accept"); | |
1461 | return 1; | |
1462 | } | |
1463 | ||
1464 | signal(SIGINT, handle_sigint); | |
1465 | signal(SIGHUP, handle_sigint); | |
1466 | signal(SIGTERM, handle_sigint); | |
1467 | signal(SIGALRM, handle_sigint); | |
1468 | ||
e85ee0f2 | 1469 | printf("blktrace: connection from %s\n", inet_ntoa(addr.sin_addr)); |
8e86c98a JA |
1470 | |
1471 | while (!is_done()) { | |
e3bf54d8 | 1472 | if (net_server_loop(&addr.sin_addr)) |
8e86c98a JA |
1473 | break; |
1474 | } | |
1475 | ||
898bbd3b JA |
1476 | for_each_dip(dip, i) |
1477 | for_each_tip(dip, tip, j) | |
1478 | tip_ftrunc_final(tip); | |
8e86c98a | 1479 | |
410d7c62 | 1480 | show_stats(); |
6a752c90 JA |
1481 | |
1482 | if (is_done()) | |
1483 | return 0; | |
1484 | ||
898bbd3b JA |
1485 | /* |
1486 | * cleanup for next run | |
1487 | */ | |
1488 | for_each_dip(dip, i) { | |
1489 | for_each_tip(dip, tip, j) | |
1490 | fclose(tip->ofile); | |
1491 | ||
1492 | free(dip->threads); | |
1493 | } | |
1494 | ||
1495 | free(device_information); | |
1496 | device_information = NULL; | |
1497 | ncpus = ndevs = 0; | |
b46a0342 JA |
1498 | |
1499 | close(net_in_fd); | |
1500 | net_in_fd = -1; | |
dbfbd6db | 1501 | stat_shown = 0; |
6a752c90 | 1502 | goto repeat; |
8e86c98a JA |
1503 | } |
1504 | ||
1505 | /* | |
1506 | * Setup outgoing network connection where we will transmit data | |
1507 | */ | |
1508 | static int net_setup_client(void) | |
1509 | { | |
1510 | struct sockaddr_in addr; | |
1511 | int fd; | |
1512 | ||
1513 | fd = socket(AF_INET, SOCK_STREAM, 0); | |
1514 | if (fd < 0) { | |
1515 | perror("client: socket"); | |
1516 | return 1; | |
1517 | } | |
1518 | ||
1519 | memset(&addr, 0, sizeof(addr)); | |
1520 | addr.sin_family = AF_INET; | |
1521 | addr.sin_port = htons(net_port); | |
1522 | ||
1523 | if (inet_aton(hostname, &addr.sin_addr) != 1) { | |
1524 | struct hostent *hent = gethostbyname(hostname); | |
1525 | if (!hent) { | |
1526 | perror("gethostbyname"); | |
1527 | return 1; | |
1528 | } | |
1529 | ||
1530 | memcpy(&addr.sin_addr, hent->h_addr, 4); | |
1531 | strcpy(hostname, hent->h_name); | |
1532 | } | |
1533 | ||
1534 | printf("blktrace: connecting to %s\n", hostname); | |
1535 | ||
1536 | if (connect(fd, (struct sockaddr *) &addr, sizeof(addr)) < 0) { | |
1537 | perror("client: connect"); | |
1538 | return 1; | |
1539 | } | |
1540 | ||
1541 | printf("blktrace: connected!\n"); | |
1542 | net_out_fd = fd; | |
1543 | return 0; | |
1544 | } | |
1545 | ||
52724a0e JA |
1546 | static char usage_str[] = \ |
1547 | "-d <dev> [ -r relay path ] [ -o <output> ] [-k ] [ -w time ]\n" \ | |
1548 | "[ -a action ] [ -A action mask ] [ -v ]\n\n" \ | |
1549 | "\t-d Use specified device. May also be given last after options\n" \ | |
1550 | "\t-r Path to mounted relayfs, defaults to /relay\n" \ | |
1551 | "\t-o File(s) to send output to\n" \ | |
d1d7f15f | 1552 | "\t-D Directory to prepend to output file names\n" \ |
52724a0e JA |
1553 | "\t-k Kill a running trace\n" \ |
1554 | "\t-w Stop after defined time, in seconds\n" \ | |
1555 | "\t-a Only trace specified actions. See documentation\n" \ | |
1556 | "\t-A Give trace mask as a single value. See documentation\n" \ | |
129aa440 JA |
1557 | "\t-b Sub buffer size in KiB\n" \ |
1558 | "\t-n Number of sub buffers\n" \ | |
f531b94d JA |
1559 | "\t-l Run in network listen mode (blktrace server)\n" \ |
1560 | "\t-h Run in network client mode, connecting to the given host\n" \ | |
1561 | "\t-p Network port to use (default 8462)\n" \ | |
1562 | "\t-s Make the network client use sendfile() to transfer data\n" \ | |
1563 | "\t-V Print program version info\n\n"; | |
52724a0e | 1564 | |
ee1f4158 NS |
1565 | static void show_usage(char *program) |
1566 | { | |
52724a0e | 1567 | fprintf(stderr, "Usage: %s %s %s",program, blktrace_version, usage_str); |
ee1f4158 | 1568 | } |
d0ca268b JA |
1569 | |
1570 | int main(int argc, char *argv[]) | |
1571 | { | |
5270dddd | 1572 | static char default_relay_path[] = "/relay"; |
e3e74029 | 1573 | struct statfs st; |
d39c04ca | 1574 | int i, c; |
ece238a6 | 1575 | int stop_watch = 0; |
d39c04ca AB |
1576 | int act_mask_tmp = 0; |
1577 | ||
1578 | while ((c = getopt_long(argc, argv, S_OPTS, l_opts, NULL)) >= 0) { | |
1579 | switch (c) { | |
1580 | case 'a': | |
1581 | i = find_mask_map(optarg); | |
1582 | if (i < 0) { | |
ab197ca7 | 1583 | fprintf(stderr,"Invalid action mask %s\n", |
d39c04ca | 1584 | optarg); |
7425d456 | 1585 | return 1; |
d39c04ca AB |
1586 | } |
1587 | act_mask_tmp |= i; | |
1588 | break; | |
1589 | ||
1590 | case 'A': | |
98f8386b AB |
1591 | if ((sscanf(optarg, "%x", &i) != 1) || |
1592 | !valid_act_opt(i)) { | |
d39c04ca | 1593 | fprintf(stderr, |
ab197ca7 | 1594 | "Invalid set action mask %s/0x%x\n", |
d39c04ca | 1595 | optarg, i); |
7425d456 | 1596 | return 1; |
d39c04ca AB |
1597 | } |
1598 | act_mask_tmp = i; | |
1599 | break; | |
d0ca268b | 1600 | |
d39c04ca | 1601 | case 'd': |
e7c9f3ff NS |
1602 | if (resize_devices(optarg) != 0) |
1603 | return 1; | |
d39c04ca AB |
1604 | break; |
1605 | ||
5270dddd JA |
1606 | case 'r': |
1607 | relay_path = optarg; | |
1608 | break; | |
1609 | ||
d5396421 | 1610 | case 'o': |
66efebf8 | 1611 | output_name = optarg; |
d5396421 | 1612 | break; |
bc39777c JA |
1613 | case 'k': |
1614 | kill_running_trace = 1; | |
1615 | break; | |
ece238a6 NS |
1616 | case 'w': |
1617 | stop_watch = atoi(optarg); | |
1618 | if (stop_watch <= 0) { | |
1619 | fprintf(stderr, | |
1620 | "Invalid stopwatch value (%d secs)\n", | |
1621 | stop_watch); | |
1622 | return 1; | |
1623 | } | |
1624 | break; | |
57ea8602 | 1625 | case 'V': |
52724a0e JA |
1626 | printf("%s version %s\n", argv[0], blktrace_version); |
1627 | return 0; | |
129aa440 | 1628 | case 'b': |
eb3c8108 | 1629 | buf_size = strtoul(optarg, NULL, 10); |
183a0855 | 1630 | if (buf_size <= 0 || buf_size > 16*1024) { |
129aa440 | 1631 | fprintf(stderr, |
eb3c8108 | 1632 | "Invalid buffer size (%lu)\n",buf_size); |
129aa440 JA |
1633 | return 1; |
1634 | } | |
1635 | buf_size <<= 10; | |
1636 | break; | |
1637 | case 'n': | |
eb3c8108 | 1638 | buf_nr = strtoul(optarg, NULL, 10); |
129aa440 JA |
1639 | if (buf_nr <= 0) { |
1640 | fprintf(stderr, | |
eb3c8108 | 1641 | "Invalid buffer nr (%lu)\n", buf_nr); |
129aa440 JA |
1642 | return 1; |
1643 | } | |
1644 | break; | |
d1d7f15f JA |
1645 | case 'D': |
1646 | output_dir = optarg; | |
1647 | break; | |
8e86c98a JA |
1648 | case 'h': |
1649 | net_mode = Net_client; | |
1650 | strcpy(hostname, optarg); | |
1651 | break; | |
1652 | case 'l': | |
1653 | net_mode = Net_server; | |
1654 | break; | |
1655 | case 'p': | |
1656 | net_port = atoi(optarg); | |
1657 | break; | |
32f18c48 JA |
1658 | case 's': |
1659 | net_sendfile = 1; | |
1660 | break; | |
d39c04ca | 1661 | default: |
ee1f4158 | 1662 | show_usage(argv[0]); |
7425d456 | 1663 | return 1; |
d39c04ca AB |
1664 | } |
1665 | } | |
1666 | ||
8e86c98a JA |
1667 | setlocale(LC_NUMERIC, "en_US"); |
1668 | ||
1669 | page_size = getpagesize(); | |
1670 | ||
1671 | if (net_mode == Net_server) | |
1672 | return net_server(); | |
1673 | ||
22cd0c02 JA |
1674 | while (optind < argc) { |
1675 | if (resize_devices(argv[optind++]) != 0) | |
1676 | return 1; | |
1677 | } | |
1678 | ||
e7c9f3ff | 1679 | if (ndevs == 0) { |
ee1f4158 | 1680 | show_usage(argv[0]); |
7425d456 | 1681 | return 1; |
d39c04ca AB |
1682 | } |
1683 | ||
5270dddd JA |
1684 | if (!relay_path) |
1685 | relay_path = default_relay_path; | |
1686 | ||
d5396421 | 1687 | if (act_mask_tmp != 0) |
d39c04ca | 1688 | act_mask = act_mask_tmp; |
d0ca268b | 1689 | |
e3e74029 NS |
1690 | if (statfs(relay_path, &st) < 0) { |
1691 | perror("statfs"); | |
1692 | fprintf(stderr,"%s does not appear to be a valid path\n", | |
1693 | relay_path); | |
1694 | return 1; | |
64acacae | 1695 | } else if (st.f_type != (long) RELAYFS_TYPE) { |
e3e74029 | 1696 | fprintf(stderr,"%s does not appear to be a relay filesystem\n", |
d0ca268b | 1697 | relay_path); |
7425d456 | 1698 | return 1; |
d0ca268b JA |
1699 | } |
1700 | ||
e7c9f3ff | 1701 | if (open_devices() != 0) |
7425d456 | 1702 | return 1; |
bc39777c JA |
1703 | |
1704 | if (kill_running_trace) { | |
e7c9f3ff | 1705 | stop_all_traces(); |
7425d456 | 1706 | return 0; |
bc39777c JA |
1707 | } |
1708 | ||
e7c9f3ff NS |
1709 | ncpus = sysconf(_SC_NPROCESSORS_ONLN); |
1710 | if (ncpus < 0) { | |
1711 | fprintf(stderr, "sysconf(_SC_NPROCESSORS_ONLN) failed\n"); | |
7425d456 | 1712 | return 1; |
d0ca268b JA |
1713 | } |
1714 | ||
d0ca268b JA |
1715 | signal(SIGINT, handle_sigint); |
1716 | signal(SIGHUP, handle_sigint); | |
1717 | signal(SIGTERM, handle_sigint); | |
ece238a6 | 1718 | signal(SIGALRM, handle_sigint); |
d0ca268b | 1719 | |
8e86c98a JA |
1720 | if (net_mode == Net_client && net_setup_client()) |
1721 | return 1; | |
1722 | ||
1723 | if (start_devices() != 0) | |
1724 | return 1; | |
1725 | ||
e7c9f3ff | 1726 | atexit(stop_all_tracing); |
830fd65c | 1727 | |
ece238a6 NS |
1728 | if (stop_watch) |
1729 | alarm(stop_watch); | |
1730 | ||
b7106311 | 1731 | wait_for_threads(); |
d0ca268b | 1732 | |
eb3c8108 JA |
1733 | if (!is_trace_stopped()) { |
1734 | trace_stopped = 1; | |
91816d54 JA |
1735 | stop_all_threads(); |
1736 | stop_all_traces(); | |
91816d54 | 1737 | } |
d0ca268b | 1738 | |
eb3c8108 JA |
1739 | show_stats(); |
1740 | ||
d0ca268b JA |
1741 | return 0; |
1742 | } | |
1743 |