Commit | Line | Data |
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68c1021b PMF |
1 | #include <stdio.h> |
2 | #include <stdint.h> | |
3 | #include <signal.h> | |
4 | #include <sys/types.h> | |
5 | #include <sys/socket.h> | |
6 | #include <sys/un.h> | |
98963de4 | 7 | #include <sched.h> |
a584bc4e | 8 | #include <fcntl.h> |
fbd8191b PMF |
9 | |
10 | #include "marker.h" | |
a584bc4e | 11 | #include "tracer.h" |
d0b5f2b9 PMF |
12 | #include "localerr.h" |
13 | #include "ustcomm.h" | |
fbd8191b | 14 | |
b02e31e5 | 15 | //#define USE_CLONE |
3847c3ba | 16 | |
68c1021b PMF |
17 | #define UNIX_PATH_MAX 108 |
18 | ||
68c1021b PMF |
19 | #define SOCKETDIR "/tmp/socks" |
20 | #define SOCKETDIRLEN sizeof(SOCKETDIR) | |
21 | #define USTSIGNAL SIGIO | |
22 | ||
98963de4 PMF |
23 | #define MAX_MSG_SIZE (100) |
24 | #define MSG_NOTIF 1 | |
25 | #define MSG_REGISTER_NOTIF 2 | |
26 | ||
a584bc4e PMF |
27 | char consumer_stack[10000]; |
28 | ||
d0b5f2b9 PMF |
29 | static struct ustcomm_app ustcomm_app; |
30 | ||
68c1021b PMF |
31 | struct tracecmd { /* no padding */ |
32 | uint32_t size; | |
33 | uint16_t command; | |
34 | }; | |
35 | ||
98963de4 PMF |
36 | //struct listener_arg { |
37 | // int pipe_fd; | |
38 | //}; | |
39 | ||
40 | struct trctl_msg { | |
41 | /* size: the size of all the fields except size itself */ | |
42 | uint32_t size; | |
43 | uint16_t type; | |
44 | /* Only the necessary part of the payload is transferred. It | |
45 | * may even be none of it. | |
46 | */ | |
47 | char payload[94]; | |
48 | }; | |
68c1021b | 49 | |
68c1021b | 50 | char mysocketfile[UNIX_PATH_MAX] = ""; |
d0b5f2b9 | 51 | //int pfd = -1; |
68c1021b | 52 | |
a584bc4e PMF |
53 | struct consumer_channel { |
54 | int fd; | |
55 | struct ltt_channel_struct *chan; | |
56 | }; | |
57 | ||
58 | int consumer(void *arg) | |
59 | { | |
60 | int result; | |
61 | int fd; | |
62 | char str[] = "Hello, this is the consumer.\n"; | |
63 | struct ltt_trace_struct *trace; | |
64 | struct consumer_channel *consumer_channels; | |
65 | int i; | |
66 | char trace_name[] = "auto"; | |
67 | ||
68 | ltt_lock_traces(); | |
69 | trace = _ltt_trace_find(trace_name); | |
70 | ltt_unlock_traces(); | |
71 | ||
72 | if(trace == NULL) { | |
73 | CPRINTF("cannot find trace!"); | |
74 | return 1; | |
75 | } | |
76 | ||
77 | consumer_channels = (struct consumer_channel *) malloc(trace->nr_channels * sizeof(struct consumer_channel)); | |
78 | if(consumer_channels == NULL) { | |
79 | ERR("malloc returned NULL"); | |
80 | return 1; | |
81 | } | |
82 | ||
83 | CPRINTF("opening trace files"); | |
84 | for(i=0; i<trace->nr_channels; i++) { | |
85 | char tmp[100]; | |
86 | struct ltt_channel_struct *chan = &trace->channels[i]; | |
87 | ||
88 | consumer_channels[i].chan = chan; | |
89 | ||
1c184644 | 90 | snprintf(tmp, sizeof(tmp), "trace/%s_0", chan->channel_name); |
a584bc4e PMF |
91 | result = consumer_channels[i].fd = open(tmp, O_WRONLY | O_CREAT | O_TRUNC, 00644); |
92 | if(result == -1) { | |
93 | perror("open"); | |
94 | return -1; | |
95 | } | |
96 | CPRINTF("\topened trace file %s", tmp); | |
97 | ||
98 | } | |
99 | CPRINTF("done opening trace files"); | |
100 | ||
101 | for(;;) { | |
102 | /*wait*/ | |
103 | ||
104 | for(i=0; i<trace->nr_channels; i++) { | |
105 | struct rchan *rchan = consumer_channels[i].chan->trans_channel_data; | |
106 | struct rchan_buf *rbuf = rchan->buf; | |
107 | struct ltt_channel_buf_struct *lttbuf = consumer_channels[i].chan->buf; | |
108 | long consumed_old; | |
109 | ||
110 | result = ltt_do_get_subbuf(rbuf, lttbuf, &consumed_old); | |
111 | if(result < 0) { | |
1c184644 | 112 | DBG("ltt_do_get_subbuf: error: %s", strerror(-result)); |
a584bc4e PMF |
113 | } |
114 | else { | |
1c184644 | 115 | DBG("success!"); |
a584bc4e PMF |
116 | |
117 | result = write(consumer_channels[i].fd, rbuf->buf_data + (consumed_old & (2 * 4096-1)), 4096); | |
118 | ltt_do_put_subbuf(rbuf, lttbuf, consumed_old); | |
119 | } | |
120 | } | |
121 | ||
122 | sleep(1); | |
123 | } | |
124 | ||
125 | // CPRINTF("consumer: got a trace: %s with %d channels\n", trace_name, trace->nr_channels); | |
126 | // | |
127 | // struct ltt_channel_struct *chan = &trace->channels[0]; | |
128 | // | |
129 | // CPRINTF("channel 1 (%s) active=%u", chan->channel_name, chan->active & 1); | |
130 | ||
131 | // struct rchan *rchan = chan->trans_channel_data; | |
132 | // struct rchan_buf *rbuf = rchan->buf; | |
133 | // struct ltt_channel_buf_struct *lttbuf = chan->buf; | |
134 | // long consumed_old; | |
135 | // | |
136 | // result = fd = open("trace.out", O_WRONLY | O_CREAT | O_TRUNC, 00644); | |
137 | // if(result == -1) { | |
138 | // perror("open"); | |
139 | // return -1; | |
140 | // } | |
141 | ||
142 | // for(;;) { | |
143 | // write(STDOUT_FILENO, str, sizeof(str)); | |
144 | // | |
145 | // result = ltt_do_get_subbuf(rbuf, lttbuf, &consumed_old); | |
146 | // if(result < 0) { | |
147 | // CPRINTF("ltt_do_get_subbuf: error: %s", strerror(-result)); | |
148 | // } | |
149 | // else { | |
150 | // CPRINTF("success!"); | |
151 | // | |
152 | // result = write(fd, rbuf->buf_data + (consumed_old & (2 * 4096-1)), 4096); | |
153 | // ltt_do_put_subbuf(rbuf, lttbuf, consumed_old); | |
154 | // } | |
155 | // | |
156 | // //CPRINTF("There seems to be %ld bytes available", SUBBUF_TRUNC(local_read(<tbuf->offset), rbuf->chan) - consumed_old); | |
157 | // CPRINTF("Commit count %ld", local_read(<tbuf->commit_count[0])); | |
158 | // | |
159 | // | |
160 | // sleep(1); | |
161 | // } | |
162 | } | |
163 | ||
164 | void start_consumer(void) | |
165 | { | |
3847c3ba | 166 | #ifdef USE_CLONE |
a584bc4e PMF |
167 | int result; |
168 | ||
169 | result = clone(consumer, consumer_stack+sizeof(consumer_stack)-1, CLONE_FS | CLONE_FILES | CLONE_VM | CLONE_SIGHAND | CLONE_THREAD, NULL); | |
170 | if(result == -1) { | |
171 | perror("clone"); | |
172 | } | |
3847c3ba PMF |
173 | #else |
174 | pthread_t thread; | |
175 | ||
176 | pthread_create(&thread, NULL, consumer, NULL); | |
177 | #endif | |
a584bc4e | 178 | } |
fbd8191b PMF |
179 | |
180 | static void print_markers(void) | |
181 | { | |
182 | struct marker_iter iter; | |
183 | ||
d0b5f2b9 | 184 | lock_markers(); |
fbd8191b PMF |
185 | marker_iter_reset(&iter); |
186 | marker_iter_start(&iter); | |
187 | ||
188 | while(iter.marker) { | |
189 | fprintf(stderr, "marker: %s_%s \"%s\"\n", iter.marker->channel, iter.marker->name, iter.marker->format); | |
190 | marker_iter_next(&iter); | |
191 | } | |
d0b5f2b9 | 192 | unlock_markers(); |
fbd8191b PMF |
193 | } |
194 | ||
68c1021b PMF |
195 | void do_command(struct tracecmd *cmd) |
196 | { | |
197 | } | |
198 | ||
199 | void receive_commands() | |
200 | { | |
201 | } | |
202 | ||
98963de4 PMF |
203 | int fd_notif = -1; |
204 | void notif_cb(void) | |
205 | { | |
206 | int result; | |
207 | struct trctl_msg msg; | |
208 | ||
209 | /* FIXME: fd_notif should probably be protected by a spinlock */ | |
210 | ||
211 | if(fd_notif == -1) | |
212 | return; | |
213 | ||
214 | msg.type = MSG_NOTIF; | |
215 | msg.size = sizeof(msg.type); | |
216 | ||
217 | /* FIXME: don't block here */ | |
218 | result = write(fd_notif, &msg, msg.size+sizeof(msg.size)); | |
219 | if(result == -1) { | |
220 | PERROR("write"); | |
221 | return; | |
222 | } | |
223 | } | |
224 | ||
d0b5f2b9 PMF |
225 | #define CONSUMER_DAEMON_SOCK SOCKETDIR "/ustd" |
226 | ||
227 | static int inform_consumer_daemon(void) | |
228 | { | |
3847c3ba PMF |
229 | ustcomm_request_consumer(getpid(), "metadata"); |
230 | ustcomm_request_consumer(getpid(), "ust"); | |
d0b5f2b9 | 231 | } |
fbd8191b | 232 | |
98963de4 PMF |
233 | int listener_main(void *p) |
234 | { | |
235 | int result; | |
236 | ||
b0540e11 PMF |
237 | DBG("LISTENER"); |
238 | ||
98963de4 | 239 | for(;;) { |
98963de4 | 240 | uint32_t size; |
98963de4 PMF |
241 | struct sockaddr_un addr; |
242 | socklen_t addrlen = sizeof(addr); | |
aafb1650 PMF |
243 | char trace_name[] = "auto"; |
244 | char trace_type[] = "ustrelay"; | |
d0b5f2b9 PMF |
245 | char *recvbuf; |
246 | int len; | |
b02e31e5 | 247 | struct ustcomm_source src; |
98963de4 | 248 | |
b02e31e5 | 249 | result = ustcomm_app_recv_message(&ustcomm_app, &recvbuf, &src); |
b0540e11 | 250 | DBG("HERE"); |
d0b5f2b9 PMF |
251 | if(result) { |
252 | WARN("error in ustcomm_app_recv_message"); | |
253 | continue; | |
254 | } | |
98963de4 | 255 | |
d0b5f2b9 PMF |
256 | DBG("received a message! it's: %s\n", recvbuf); |
257 | len = strlen(recvbuf); | |
b0540e11 PMF |
258 | //if(len && recvbuf[len-1] == '\n') { |
259 | // recvbuf[len-1] = '\0'; | |
260 | //} | |
98963de4 | 261 | |
d0b5f2b9 PMF |
262 | if(!strcmp(recvbuf, "print_markers")) { |
263 | print_markers(); | |
264 | } | |
265 | else if(!strcmp(recvbuf, "trace_setup")) { | |
266 | DBG("trace setup"); | |
fbd8191b | 267 | |
d0b5f2b9 PMF |
268 | result = ltt_trace_setup(trace_name); |
269 | if(result < 0) { | |
270 | ERR("ltt_trace_setup failed"); | |
271 | return; | |
fbd8191b | 272 | } |
d0b5f2b9 PMF |
273 | |
274 | result = ltt_trace_set_type(trace_name, trace_type); | |
275 | if(result < 0) { | |
276 | ERR("ltt_trace_set_type failed"); | |
277 | return; | |
fbd8191b | 278 | } |
d0b5f2b9 PMF |
279 | } |
280 | else if(!strcmp(recvbuf, "trace_alloc")) { | |
281 | DBG("trace alloc"); | |
282 | ||
283 | result = ltt_trace_alloc(trace_name); | |
284 | if(result < 0) { | |
285 | ERR("ltt_trace_alloc failed"); | |
286 | return; | |
fbd8191b | 287 | } |
d0b5f2b9 PMF |
288 | } |
289 | else if(!strcmp(recvbuf, "trace_start")) { | |
290 | DBG("trace start"); | |
291 | ||
292 | result = ltt_trace_start(trace_name); | |
293 | if(result < 0) { | |
294 | ERR("ltt_trace_start failed"); | |
295 | continue; | |
fbd8191b | 296 | } |
d0b5f2b9 PMF |
297 | } |
298 | else if(!strcmp(recvbuf, "trace_stop")) { | |
299 | DBG("trace stop"); | |
300 | ||
301 | result = ltt_trace_stop(trace_name); | |
302 | if(result < 0) { | |
303 | ERR("ltt_trace_stop failed"); | |
304 | return; | |
aafb1650 | 305 | } |
d0b5f2b9 PMF |
306 | } |
307 | else if(!strcmp(recvbuf, "trace_destroy")) { | |
aafb1650 | 308 | |
d0b5f2b9 | 309 | DBG("trace destroy"); |
aafb1650 | 310 | |
d0b5f2b9 PMF |
311 | result = ltt_trace_destroy(trace_name); |
312 | if(result < 0) { | |
313 | ERR("ltt_trace_destroy failed"); | |
314 | return; | |
fbd8191b | 315 | } |
98963de4 | 316 | } |
b02e31e5 | 317 | else if(nth_token_is(recvbuf, "get_shmid", 0) == 1) { |
3847c3ba PMF |
318 | struct ltt_trace_struct *trace; |
319 | char trace_name[] = "auto"; | |
320 | int i; | |
811e4b93 | 321 | char *channel_name; |
3847c3ba PMF |
322 | |
323 | DBG("get_shmid"); | |
324 | ||
811e4b93 PMF |
325 | channel_name = nth_token(recvbuf, 1); |
326 | if(channel_name == NULL) { | |
327 | ERR("get_shmid: cannot parse channel"); | |
328 | goto next_cmd; | |
329 | } | |
330 | ||
3847c3ba PMF |
331 | ltt_lock_traces(); |
332 | trace = _ltt_trace_find(trace_name); | |
333 | ltt_unlock_traces(); | |
334 | ||
335 | if(trace == NULL) { | |
336 | CPRINTF("cannot find trace!"); | |
337 | return 1; | |
338 | } | |
339 | ||
340 | for(i=0; i<trace->nr_channels; i++) { | |
341 | struct rchan *rchan = trace->channels[i].trans_channel_data; | |
342 | struct rchan_buf *rbuf = rchan->buf; | |
343 | ||
811e4b93 PMF |
344 | if(!strcmp(trace->channels[i].channel_name, channel_name)) { |
345 | char *reply; | |
346 | ||
347 | DBG("the shmid for the requested channel is %d", rbuf->shmid); | |
348 | asprintf(&reply, "%d", rbuf->shmid); | |
349 | ||
350 | result = ustcomm_send_reply(&ustcomm_app.server, reply, &src); | |
351 | if(result) { | |
352 | ERR("listener: get_shmid: ustcomm_send_reply failed"); | |
353 | goto next_cmd; | |
354 | } | |
355 | ||
356 | free(reply); | |
357 | ||
358 | break; | |
359 | } | |
360 | } | |
361 | } | |
362 | else if(nth_token_is(recvbuf, "get_n_subbufs", 0) == 1) { | |
363 | struct ltt_trace_struct *trace; | |
364 | char trace_name[] = "auto"; | |
365 | int i; | |
366 | char *channel_name; | |
367 | ||
368 | DBG("get_n_subbufs"); | |
369 | ||
370 | channel_name = nth_token(recvbuf, 1); | |
371 | if(channel_name == NULL) { | |
372 | ERR("get_n_subbufs: cannot parse channel"); | |
373 | goto next_cmd; | |
374 | } | |
375 | ||
376 | ltt_lock_traces(); | |
377 | trace = _ltt_trace_find(trace_name); | |
378 | ltt_unlock_traces(); | |
379 | ||
380 | if(trace == NULL) { | |
381 | CPRINTF("cannot find trace!"); | |
382 | return 1; | |
383 | } | |
384 | ||
385 | for(i=0; i<trace->nr_channels; i++) { | |
386 | struct rchan *rchan = trace->channels[i].trans_channel_data; | |
387 | ||
388 | if(!strcmp(trace->channels[i].channel_name, channel_name)) { | |
389 | char *reply; | |
390 | ||
391 | DBG("the n_subbufs for the requested channel is %d", rchan->n_subbufs); | |
392 | asprintf(&reply, "%d", rchan->n_subbufs); | |
393 | ||
394 | result = ustcomm_send_reply(&ustcomm_app.server, reply, &src); | |
395 | if(result) { | |
396 | ERR("listener: get_n_subbufs: ustcomm_send_reply failed"); | |
397 | goto next_cmd; | |
398 | } | |
399 | ||
400 | free(reply); | |
401 | ||
402 | break; | |
403 | } | |
404 | } | |
405 | } | |
406 | else if(nth_token_is(recvbuf, "get_subbuf_size", 0) == 1) { | |
407 | struct ltt_trace_struct *trace; | |
408 | char trace_name[] = "auto"; | |
409 | int i; | |
410 | char *channel_name; | |
411 | ||
412 | DBG("get_subbuf_size"); | |
413 | ||
414 | channel_name = nth_token(recvbuf, 1); | |
415 | if(channel_name == NULL) { | |
416 | ERR("get_subbuf_size: cannot parse channel"); | |
417 | goto next_cmd; | |
418 | } | |
419 | ||
420 | ltt_lock_traces(); | |
421 | trace = _ltt_trace_find(trace_name); | |
422 | ltt_unlock_traces(); | |
423 | ||
424 | if(trace == NULL) { | |
425 | CPRINTF("cannot find trace!"); | |
426 | return 1; | |
427 | } | |
428 | ||
429 | for(i=0; i<trace->nr_channels; i++) { | |
430 | struct rchan *rchan = trace->channels[i].trans_channel_data; | |
431 | ||
432 | if(!strcmp(trace->channels[i].channel_name, channel_name)) { | |
433 | char *reply; | |
434 | ||
435 | DBG("the subbuf_size for the requested channel is %d", rchan->subbuf_size); | |
436 | asprintf(&reply, "%d", rchan->subbuf_size); | |
437 | ||
438 | result = ustcomm_send_reply(&ustcomm_app.server, reply, &src); | |
439 | if(result) { | |
440 | ERR("listener: get_subbuf_size: ustcomm_send_reply failed"); | |
441 | goto next_cmd; | |
442 | } | |
443 | ||
444 | free(reply); | |
3847c3ba | 445 | |
811e4b93 PMF |
446 | break; |
447 | } | |
3847c3ba PMF |
448 | } |
449 | } | |
b02e31e5 PMF |
450 | else if(nth_token_is(recvbuf, "load_probe_lib", 0) == 1) { |
451 | char *libfile; | |
452 | ||
453 | libfile = nth_token(recvbuf, 1); | |
454 | ||
455 | DBG("load_probe_lib loading %s", libfile); | |
456 | } | |
d0b5f2b9 | 457 | |
811e4b93 | 458 | next_cmd: |
d0b5f2b9 | 459 | free(recvbuf); |
98963de4 PMF |
460 | } |
461 | } | |
462 | ||
b0540e11 PMF |
463 | static char listener_stack[16384]; |
464 | ||
98963de4 PMF |
465 | void create_listener(void) |
466 | { | |
467 | int result; | |
468 | static char listener_stack[16384]; | |
b0540e11 | 469 | //char *listener_stack = malloc(16384); |
98963de4 | 470 | |
3847c3ba | 471 | #ifdef USE_CLONE |
fbd8191b | 472 | result = clone(listener_main, listener_stack+sizeof(listener_stack)-1, CLONE_FS | CLONE_FILES | CLONE_VM | CLONE_SIGHAND | CLONE_THREAD, NULL); |
98963de4 PMF |
473 | if(result == -1) { |
474 | perror("clone"); | |
475 | } | |
3847c3ba PMF |
476 | #else |
477 | pthread_t thread; | |
b0540e11 | 478 | |
3847c3ba PMF |
479 | pthread_create(&thread, NULL, listener_main, NULL); |
480 | #endif | |
98963de4 PMF |
481 | } |
482 | ||
d0b5f2b9 PMF |
483 | /* The signal handler itself. Signals must be setup so there cannot be |
484 | nested signals. */ | |
68c1021b PMF |
485 | |
486 | void sighandler(int sig) | |
487 | { | |
d0b5f2b9 | 488 | static char have_listener = 0; |
68c1021b | 489 | DBG("sighandler"); |
d0b5f2b9 PMF |
490 | |
491 | if(!have_listener) { | |
492 | create_listener(); | |
493 | have_listener = 1; | |
494 | } | |
68c1021b PMF |
495 | } |
496 | ||
497 | /* Called by the app signal handler to chain it to us. */ | |
498 | ||
98963de4 | 499 | void chain_signal(void) |
68c1021b PMF |
500 | { |
501 | sighandler(USTSIGNAL); | |
502 | } | |
503 | ||
98963de4 | 504 | static int init_socket(void) |
68c1021b | 505 | { |
d0b5f2b9 | 506 | return ustcomm_init_app(getpid(), &ustcomm_app); |
68c1021b PMF |
507 | } |
508 | ||
98963de4 | 509 | static void destroy_socket(void) |
68c1021b PMF |
510 | { |
511 | int result; | |
512 | ||
513 | if(mysocketfile[0] == '\0') | |
514 | return; | |
515 | ||
516 | result = unlink(mysocketfile); | |
517 | if(result == -1) { | |
518 | PERROR("unlink"); | |
519 | } | |
520 | } | |
521 | ||
98963de4 | 522 | static int init_signal_handler(void) |
68c1021b PMF |
523 | { |
524 | /* Attempt to handler SIGIO. If the main program wants to | |
525 | * handle it, fine, it'll override us. They it'll have to | |
526 | * use the chaining function. | |
527 | */ | |
528 | ||
529 | int result; | |
530 | struct sigaction act; | |
531 | ||
532 | result = sigemptyset(&act.sa_mask); | |
533 | if(result == -1) { | |
534 | PERROR("sigemptyset"); | |
535 | return -1; | |
536 | } | |
537 | ||
538 | act.sa_handler = sighandler; | |
539 | act.sa_flags = SA_RESTART; | |
540 | ||
541 | /* Only defer ourselves. Also, try to restart interrupted | |
542 | * syscalls to disturb the traced program as little as possible. | |
543 | */ | |
544 | result = sigaction(SIGIO, &act, NULL); | |
545 | if(result == -1) { | |
546 | PERROR("sigaction"); | |
547 | return -1; | |
548 | } | |
549 | ||
550 | return 0; | |
551 | } | |
552 | ||
20b37a31 | 553 | static void auto_probe_connect(struct marker *m) |
68c1021b PMF |
554 | { |
555 | int result; | |
556 | ||
20b37a31 PMF |
557 | result = ltt_marker_connect(m->channel, m->name, "default"); |
558 | if(result) | |
559 | ERR("ltt_marker_connect"); | |
560 | ||
561 | DBG("just auto connected marker %s %s to probe default", m->channel, m->name); | |
562 | } | |
563 | ||
564 | static void __attribute__((constructor(101))) init0() | |
565 | { | |
566 | DBG("UST_AUTOPROBE constructor"); | |
567 | if(getenv("UST_AUTOPROBE")) { | |
568 | marker_set_new_marker_cb(auto_probe_connect); | |
569 | } | |
570 | } | |
571 | ||
a584bc4e PMF |
572 | static void fini(void); |
573 | ||
20b37a31 PMF |
574 | static void __attribute__((constructor(1000))) init() |
575 | { | |
576 | int result; | |
577 | ||
578 | DBG("UST_TRACE constructor"); | |
579 | ||
3847c3ba PMF |
580 | /* Must create socket before signal handler to prevent races. |
581 | */ | |
582 | result = init_socket(); | |
583 | if(result == -1) { | |
584 | ERR("init_socket error"); | |
585 | return; | |
586 | } | |
587 | result = init_signal_handler(); | |
588 | if(result == -1) { | |
589 | ERR("init_signal_handler error"); | |
590 | return; | |
591 | } | |
68c1021b | 592 | |
4db647c5 PMF |
593 | if(getenv("UST_TRACE")) { |
594 | char trace_name[] = "auto"; | |
595 | char trace_type[] = "ustrelay"; | |
596 | ||
597 | DBG("starting early tracing"); | |
598 | ||
599 | /* Ensure marker control is initialized */ | |
600 | init_marker_control(); | |
601 | ||
602 | /* Ensure relay is initialized */ | |
603 | init_ustrelay_transport(); | |
604 | ||
605 | /* Ensure markers are initialized */ | |
606 | init_markers(); | |
607 | ||
20b37a31 PMF |
608 | /* In case. */ |
609 | ltt_channels_register("ust"); | |
4db647c5 PMF |
610 | |
611 | result = ltt_trace_setup(trace_name); | |
612 | if(result < 0) { | |
613 | ERR("ltt_trace_setup failed"); | |
614 | return; | |
615 | } | |
616 | ||
617 | result = ltt_trace_set_type(trace_name, trace_type); | |
618 | if(result < 0) { | |
619 | ERR("ltt_trace_set_type failed"); | |
620 | return; | |
621 | } | |
622 | ||
623 | result = ltt_trace_alloc(trace_name); | |
624 | if(result < 0) { | |
625 | ERR("ltt_trace_alloc failed"); | |
626 | return; | |
627 | } | |
628 | ||
629 | result = ltt_trace_start(trace_name); | |
630 | if(result < 0) { | |
631 | ERR("ltt_trace_start failed"); | |
632 | return; | |
633 | } | |
3847c3ba PMF |
634 | //start_consumer(); |
635 | inform_consumer_daemon(); | |
4db647c5 PMF |
636 | } |
637 | ||
68c1021b PMF |
638 | |
639 | return; | |
640 | ||
641 | /* should decrementally destroy stuff if error */ | |
642 | ||
643 | } | |
644 | ||
645 | /* This is only called if we terminate normally, not with an unhandled signal, | |
646 | * so we cannot rely on it. */ | |
647 | ||
98963de4 | 648 | static void __attribute__((destructor)) fini() |
68c1021b | 649 | { |
a584bc4e PMF |
650 | int result; |
651 | ||
652 | /* if trace running, finish it */ | |
653 | ||
654 | DBG("destructor stopping traces"); | |
655 | ||
656 | result = ltt_trace_stop("auto"); | |
657 | if(result == -1) { | |
658 | ERR("ltt_trace_stop error"); | |
659 | } | |
660 | ||
661 | result = ltt_trace_destroy("auto"); | |
662 | if(result == -1) { | |
663 | ERR("ltt_trace_destroy error"); | |
664 | } | |
665 | ||
666 | /* FIXME: wait for the consumer to be done */ | |
d0b5f2b9 | 667 | sleep(1); |
a584bc4e | 668 | |
68c1021b PMF |
669 | destroy_socket(); |
670 | } |