Commit | Line | Data |
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331744e3 JD |
1 | /* |
2 | * Copyright (C) 2012 - Julien Desfossez <julien.desfossez@efficios.com> | |
3 | * David Goulet <dgoulet@efficios.com> | |
4 | * | |
5 | * This program is free software; you can redistribute it and/or modify it | |
6 | * under the terms of the GNU General Public License, version 2 only, as | |
7 | * published by the Free Software Foundation. | |
8 | * | |
9 | * This program is distributed in the hope that it will be useful, but WITHOUT | |
10 | * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or | |
11 | * FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License for | |
12 | * more details. | |
13 | * | |
14 | * You should have received a copy of the GNU General Public License along with | |
15 | * this program; if not, write to the Free Software Foundation, Inc., 51 | |
16 | * Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA. | |
17 | */ | |
18 | ||
6c1c0768 | 19 | #define _LGPL_SOURCE |
331744e3 JD |
20 | #include <assert.h> |
21 | #include <inttypes.h> | |
22 | #include <signal.h> | |
23 | ||
51a9e1c7 | 24 | #include <bin/lttng-consumerd/health-consumerd.h> |
331744e3 | 25 | #include <common/common.h> |
f263b7fd | 26 | #include <common/compat/endian.h> |
d3e2ba59 JD |
27 | #include <common/kernel-ctl/kernel-ctl.h> |
28 | #include <common/kernel-consumer/kernel-consumer.h> | |
c8fea79c JR |
29 | #include <common/consumer/consumer-stream.h> |
30 | #include <common/consumer/consumer-timer.h> | |
31 | #include <common/consumer/consumer-testpoint.h> | |
32 | #include <common/ust-consumer/ust-consumer.h> | |
331744e3 | 33 | |
9304a209 JG |
34 | typedef int (*sample_positions_cb)(struct lttng_consumer_stream *stream); |
35 | typedef int (*get_consumed_cb)(struct lttng_consumer_stream *stream, | |
36 | unsigned long *consumed); | |
37 | typedef int (*get_produced_cb)(struct lttng_consumer_stream *stream, | |
38 | unsigned long *produced); | |
39 | typedef int (*flush_index_cb)(struct lttng_consumer_stream *stream); | |
40 | ||
2b8f8754 MD |
41 | static struct timer_signal_data timer_signal = { |
42 | .tid = 0, | |
43 | .setup_done = 0, | |
44 | .qs_done = 0, | |
45 | .lock = PTHREAD_MUTEX_INITIALIZER, | |
46 | }; | |
331744e3 JD |
47 | |
48 | /* | |
49 | * Set custom signal mask to current thread. | |
50 | */ | |
51 | static void setmask(sigset_t *mask) | |
52 | { | |
53 | int ret; | |
54 | ||
55 | ret = sigemptyset(mask); | |
56 | if (ret) { | |
57 | PERROR("sigemptyset"); | |
58 | } | |
59 | ret = sigaddset(mask, LTTNG_CONSUMER_SIG_SWITCH); | |
60 | if (ret) { | |
d3e2ba59 | 61 | PERROR("sigaddset switch"); |
331744e3 JD |
62 | } |
63 | ret = sigaddset(mask, LTTNG_CONSUMER_SIG_TEARDOWN); | |
64 | if (ret) { | |
d3e2ba59 JD |
65 | PERROR("sigaddset teardown"); |
66 | } | |
67 | ret = sigaddset(mask, LTTNG_CONSUMER_SIG_LIVE); | |
68 | if (ret) { | |
69 | PERROR("sigaddset live"); | |
331744e3 | 70 | } |
5383626c MD |
71 | ret = sigaddset(mask, LTTNG_CONSUMER_SIG_EXIT); |
72 | if (ret) { | |
73 | PERROR("sigaddset exit"); | |
74 | } | |
331744e3 JD |
75 | } |
76 | ||
77 | /* | |
78 | * Execute action on a timer switch. | |
d98a47c7 MD |
79 | * |
80 | * Beware: metadata_switch_timer() should *never* take a mutex also held | |
81 | * while consumer_timer_switch_stop() is called. It would result in | |
82 | * deadlocks. | |
331744e3 JD |
83 | */ |
84 | static void metadata_switch_timer(struct lttng_consumer_local_data *ctx, | |
85 | int sig, siginfo_t *si, void *uc) | |
86 | { | |
87 | int ret; | |
88 | struct lttng_consumer_channel *channel; | |
89 | ||
90 | channel = si->si_value.sival_ptr; | |
91 | assert(channel); | |
92 | ||
4419b4fb MD |
93 | if (channel->switch_timer_error) { |
94 | return; | |
95 | } | |
96 | ||
331744e3 JD |
97 | DBG("Switch timer for channel %" PRIu64, channel->key); |
98 | switch (ctx->type) { | |
99 | case LTTNG_CONSUMER32_UST: | |
100 | case LTTNG_CONSUMER64_UST: | |
4fa3dc0e MD |
101 | /* |
102 | * Locks taken by lttng_ustconsumer_request_metadata(): | |
103 | * - metadata_socket_lock | |
104 | * - Calling lttng_ustconsumer_recv_metadata(): | |
f82d9449 | 105 | * - channel->metadata_cache->lock |
4fa3dc0e | 106 | * - Calling consumer_metadata_cache_flushed(): |
5e41ebe1 MD |
107 | * - channel->timer_lock |
108 | * - channel->metadata_cache->lock | |
4fa3dc0e | 109 | * |
5e41ebe1 MD |
110 | * Ensure that neither consumer_data.lock nor |
111 | * channel->lock are taken within this function, since | |
112 | * they are held while consumer_timer_switch_stop() is | |
113 | * called. | |
4fa3dc0e | 114 | */ |
94d49140 | 115 | ret = lttng_ustconsumer_request_metadata(ctx, channel, 1, 1); |
331744e3 | 116 | if (ret < 0) { |
4419b4fb | 117 | channel->switch_timer_error = 1; |
331744e3 JD |
118 | } |
119 | break; | |
120 | case LTTNG_CONSUMER_KERNEL: | |
121 | case LTTNG_CONSUMER_UNKNOWN: | |
122 | assert(0); | |
123 | break; | |
124 | } | |
125 | } | |
126 | ||
528f2ffa JD |
127 | static int send_empty_index(struct lttng_consumer_stream *stream, uint64_t ts, |
128 | uint64_t stream_id) | |
d3e2ba59 JD |
129 | { |
130 | int ret; | |
50adc264 | 131 | struct ctf_packet_index index; |
d3e2ba59 JD |
132 | |
133 | memset(&index, 0, sizeof(index)); | |
528f2ffa | 134 | index.stream_id = htobe64(stream_id); |
d3e2ba59 JD |
135 | index.timestamp_end = htobe64(ts); |
136 | ret = consumer_stream_write_index(stream, &index); | |
137 | if (ret < 0) { | |
138 | goto error; | |
139 | } | |
140 | ||
141 | error: | |
142 | return ret; | |
143 | } | |
144 | ||
c585821b | 145 | int consumer_flush_kernel_index(struct lttng_consumer_stream *stream) |
d3e2ba59 | 146 | { |
528f2ffa | 147 | uint64_t ts, stream_id; |
d3e2ba59 JD |
148 | int ret; |
149 | ||
d3e2ba59 JD |
150 | ret = kernctl_get_current_timestamp(stream->wait_fd, &ts); |
151 | if (ret < 0) { | |
152 | ERR("Failed to get the current timestamp"); | |
c585821b | 153 | goto end; |
d3e2ba59 JD |
154 | } |
155 | ret = kernctl_buffer_flush(stream->wait_fd); | |
156 | if (ret < 0) { | |
157 | ERR("Failed to flush kernel stream"); | |
c585821b | 158 | goto end; |
d3e2ba59 JD |
159 | } |
160 | ret = kernctl_snapshot(stream->wait_fd); | |
161 | if (ret < 0) { | |
32af2c95 | 162 | if (ret != -EAGAIN && ret != -ENODATA) { |
08b1dcd3 | 163 | PERROR("live timer kernel snapshot"); |
d3e2ba59 | 164 | ret = -1; |
c585821b | 165 | goto end; |
d3e2ba59 | 166 | } |
528f2ffa JD |
167 | ret = kernctl_get_stream_id(stream->wait_fd, &stream_id); |
168 | if (ret < 0) { | |
169 | PERROR("kernctl_get_stream_id"); | |
c585821b | 170 | goto end; |
528f2ffa | 171 | } |
d3e2ba59 | 172 | DBG("Stream %" PRIu64 " empty, sending beacon", stream->key); |
528f2ffa | 173 | ret = send_empty_index(stream, ts, stream_id); |
d3e2ba59 | 174 | if (ret < 0) { |
c585821b | 175 | goto end; |
d3e2ba59 JD |
176 | } |
177 | } | |
178 | ret = 0; | |
c585821b | 179 | end: |
d3e2ba59 JD |
180 | return ret; |
181 | } | |
182 | ||
9304a209 JG |
183 | static int check_stream(struct lttng_consumer_stream *stream, |
184 | flush_index_cb flush_index) | |
d3e2ba59 | 185 | { |
d3e2ba59 JD |
186 | int ret; |
187 | ||
d3e2ba59 JD |
188 | /* |
189 | * While holding the stream mutex, try to take a snapshot, if it | |
190 | * succeeds, it means that data is ready to be sent, just let the data | |
191 | * thread handle that. Otherwise, if the snapshot returns EAGAIN, it | |
192 | * means that there is no data to read after the flush, so we can | |
193 | * safely send the empty index. | |
c585821b MD |
194 | * |
195 | * Doing a trylock and checking if waiting on metadata if | |
196 | * trylock fails. Bail out of the stream is indeed waiting for | |
197 | * metadata to be pushed. Busy wait on trylock otherwise. | |
d3e2ba59 | 198 | */ |
c585821b MD |
199 | for (;;) { |
200 | ret = pthread_mutex_trylock(&stream->lock); | |
201 | switch (ret) { | |
202 | case 0: | |
203 | break; /* We have the lock. */ | |
204 | case EBUSY: | |
205 | pthread_mutex_lock(&stream->metadata_timer_lock); | |
206 | if (stream->waiting_on_metadata) { | |
207 | ret = 0; | |
208 | stream->missed_metadata_flush = true; | |
209 | pthread_mutex_unlock(&stream->metadata_timer_lock); | |
210 | goto end; /* Bail out. */ | |
211 | } | |
212 | pthread_mutex_unlock(&stream->metadata_timer_lock); | |
213 | /* Try again. */ | |
214 | caa_cpu_relax(); | |
215 | continue; | |
216 | default: | |
217 | ERR("Unexpected pthread_mutex_trylock error %d", ret); | |
218 | ret = -1; | |
219 | goto end; | |
220 | } | |
221 | break; | |
222 | } | |
9304a209 | 223 | ret = flush_index(stream); |
c585821b MD |
224 | pthread_mutex_unlock(&stream->lock); |
225 | end: | |
226 | return ret; | |
227 | } | |
228 | ||
229 | int consumer_flush_ust_index(struct lttng_consumer_stream *stream) | |
230 | { | |
231 | uint64_t ts, stream_id; | |
232 | int ret; | |
233 | ||
94d49140 JD |
234 | ret = cds_lfht_is_node_deleted(&stream->node.node); |
235 | if (ret) { | |
c585821b | 236 | goto end; |
94d49140 JD |
237 | } |
238 | ||
84a182ce | 239 | ret = lttng_ustconsumer_get_current_timestamp(stream, &ts); |
d3e2ba59 JD |
240 | if (ret < 0) { |
241 | ERR("Failed to get the current timestamp"); | |
c585821b | 242 | goto end; |
d3e2ba59 | 243 | } |
84a182ce DG |
244 | lttng_ustconsumer_flush_buffer(stream, 1); |
245 | ret = lttng_ustconsumer_take_snapshot(stream); | |
d3e2ba59 | 246 | if (ret < 0) { |
94d49140 | 247 | if (ret != -EAGAIN) { |
d3e2ba59 JD |
248 | ERR("Taking UST snapshot"); |
249 | ret = -1; | |
c585821b | 250 | goto end; |
d3e2ba59 | 251 | } |
70190e1c | 252 | ret = lttng_ustconsumer_get_stream_id(stream, &stream_id); |
528f2ffa JD |
253 | if (ret < 0) { |
254 | PERROR("ustctl_get_stream_id"); | |
c585821b | 255 | goto end; |
528f2ffa | 256 | } |
d3e2ba59 | 257 | DBG("Stream %" PRIu64 " empty, sending beacon", stream->key); |
528f2ffa | 258 | ret = send_empty_index(stream, ts, stream_id); |
d3e2ba59 | 259 | if (ret < 0) { |
c585821b | 260 | goto end; |
d3e2ba59 JD |
261 | } |
262 | } | |
263 | ret = 0; | |
c585821b MD |
264 | end: |
265 | return ret; | |
266 | } | |
d3e2ba59 | 267 | |
d3e2ba59 JD |
268 | /* |
269 | * Execute action on a live timer | |
270 | */ | |
271 | static void live_timer(struct lttng_consumer_local_data *ctx, | |
272 | int sig, siginfo_t *si, void *uc) | |
273 | { | |
274 | int ret; | |
275 | struct lttng_consumer_channel *channel; | |
276 | struct lttng_consumer_stream *stream; | |
d3e2ba59 | 277 | struct lttng_ht_iter iter; |
9304a209 JG |
278 | const struct lttng_ht *ht = consumer_data.stream_per_chan_id_ht; |
279 | const flush_index_cb flush_index = | |
280 | ctx->type == LTTNG_CONSUMER_KERNEL ? | |
281 | consumer_flush_kernel_index : | |
282 | consumer_flush_ust_index; | |
d3e2ba59 JD |
283 | |
284 | channel = si->si_value.sival_ptr; | |
285 | assert(channel); | |
286 | ||
287 | if (channel->switch_timer_error) { | |
288 | goto error; | |
289 | } | |
d3e2ba59 JD |
290 | |
291 | DBG("Live timer for channel %" PRIu64, channel->key); | |
d60962b2 JR |
292 | if (channel->live_timer_enabled != 1) { |
293 | DBG("Liver timer was stopped before the iteration. Quitting early."); | |
294 | goto skip; | |
295 | } | |
d3e2ba59 JD |
296 | |
297 | rcu_read_lock(); | |
9304a209 JG |
298 | cds_lfht_for_each_entry_duplicate(ht->ht, |
299 | ht->hash_fct(&channel->key, lttng_ht_seed), | |
300 | ht->match_fct, &channel->key, &iter.iter, | |
301 | stream, node_channel_id.node) { | |
d60962b2 JR |
302 | if (channel->live_timer_enabled != 1) { |
303 | DBG("Liver timer was stopped during the iteration. Quitting early."); | |
304 | goto skip_unlock; | |
305 | } | |
306 | ||
9304a209 JG |
307 | ret = check_stream(stream, flush_index); |
308 | if (ret < 0) { | |
309 | goto error_unlock; | |
d3e2ba59 | 310 | } |
d3e2ba59 JD |
311 | } |
312 | ||
d60962b2 | 313 | skip_unlock: |
d3e2ba59 JD |
314 | error_unlock: |
315 | rcu_read_unlock(); | |
316 | ||
d60962b2 | 317 | skip: |
d3e2ba59 JD |
318 | error: |
319 | return; | |
320 | } | |
321 | ||
2b8f8754 MD |
322 | static |
323 | void consumer_timer_signal_thread_qs(unsigned int signr) | |
324 | { | |
325 | sigset_t pending_set; | |
326 | int ret; | |
327 | ||
328 | /* | |
329 | * We need to be the only thread interacting with the thread | |
330 | * that manages signals for teardown synchronization. | |
331 | */ | |
332 | pthread_mutex_lock(&timer_signal.lock); | |
333 | ||
334 | /* Ensure we don't have any signal queued for this channel. */ | |
335 | for (;;) { | |
336 | ret = sigemptyset(&pending_set); | |
337 | if (ret == -1) { | |
338 | PERROR("sigemptyset"); | |
339 | } | |
340 | ret = sigpending(&pending_set); | |
341 | if (ret == -1) { | |
342 | PERROR("sigpending"); | |
343 | } | |
6f7cc0be | 344 | if (!sigismember(&pending_set, signr)) { |
2b8f8754 MD |
345 | break; |
346 | } | |
347 | caa_cpu_relax(); | |
348 | } | |
349 | ||
350 | /* | |
351 | * From this point, no new signal handler will be fired that would try to | |
352 | * access "chan". However, we still need to wait for any currently | |
353 | * executing handler to complete. | |
354 | */ | |
355 | cmm_smp_mb(); | |
356 | CMM_STORE_SHARED(timer_signal.qs_done, 0); | |
357 | cmm_smp_mb(); | |
358 | ||
359 | /* | |
360 | * Kill with LTTNG_CONSUMER_SIG_TEARDOWN, so signal management thread wakes | |
361 | * up. | |
362 | */ | |
363 | kill(getpid(), LTTNG_CONSUMER_SIG_TEARDOWN); | |
364 | ||
365 | while (!CMM_LOAD_SHARED(timer_signal.qs_done)) { | |
366 | caa_cpu_relax(); | |
367 | } | |
368 | cmm_smp_mb(); | |
369 | ||
370 | pthread_mutex_unlock(&timer_signal.lock); | |
371 | } | |
372 | ||
331744e3 JD |
373 | /* |
374 | * Set the timer for periodical metadata flush. | |
375 | */ | |
376 | void consumer_timer_switch_start(struct lttng_consumer_channel *channel, | |
377 | unsigned int switch_timer_interval) | |
378 | { | |
379 | int ret; | |
380 | struct sigevent sev; | |
381 | struct itimerspec its; | |
382 | ||
383 | assert(channel); | |
384 | assert(channel->key); | |
385 | ||
386 | if (switch_timer_interval == 0) { | |
387 | return; | |
388 | } | |
389 | ||
390 | sev.sigev_notify = SIGEV_SIGNAL; | |
391 | sev.sigev_signo = LTTNG_CONSUMER_SIG_SWITCH; | |
392 | sev.sigev_value.sival_ptr = channel; | |
393 | ret = timer_create(CLOCKID, &sev, &channel->switch_timer); | |
394 | if (ret == -1) { | |
395 | PERROR("timer_create"); | |
396 | } | |
397 | channel->switch_timer_enabled = 1; | |
398 | ||
399 | its.it_value.tv_sec = switch_timer_interval / 1000000; | |
69f60d21 | 400 | its.it_value.tv_nsec = (switch_timer_interval % 1000000) * 1000; |
331744e3 JD |
401 | its.it_interval.tv_sec = its.it_value.tv_sec; |
402 | its.it_interval.tv_nsec = its.it_value.tv_nsec; | |
403 | ||
404 | ret = timer_settime(channel->switch_timer, 0, &its, NULL); | |
405 | if (ret == -1) { | |
406 | PERROR("timer_settime"); | |
407 | } | |
408 | } | |
409 | ||
410 | /* | |
411 | * Stop and delete timer. | |
412 | */ | |
413 | void consumer_timer_switch_stop(struct lttng_consumer_channel *channel) | |
414 | { | |
415 | int ret; | |
331744e3 JD |
416 | |
417 | assert(channel); | |
418 | ||
419 | ret = timer_delete(channel->switch_timer); | |
420 | if (ret == -1) { | |
421 | PERROR("timer_delete"); | |
422 | } | |
423 | ||
2b8f8754 | 424 | consumer_timer_signal_thread_qs(LTTNG_CONSUMER_SIG_SWITCH); |
331744e3 | 425 | |
2b8f8754 MD |
426 | channel->switch_timer = 0; |
427 | channel->switch_timer_enabled = 0; | |
331744e3 JD |
428 | } |
429 | ||
d3e2ba59 JD |
430 | /* |
431 | * Set the timer for the live mode. | |
432 | */ | |
433 | void consumer_timer_live_start(struct lttng_consumer_channel *channel, | |
434 | int live_timer_interval) | |
435 | { | |
436 | int ret; | |
437 | struct sigevent sev; | |
438 | struct itimerspec its; | |
439 | ||
440 | assert(channel); | |
441 | assert(channel->key); | |
442 | ||
fac41e72 | 443 | if (live_timer_interval <= 0) { |
d3e2ba59 JD |
444 | return; |
445 | } | |
446 | ||
447 | sev.sigev_notify = SIGEV_SIGNAL; | |
448 | sev.sigev_signo = LTTNG_CONSUMER_SIG_LIVE; | |
449 | sev.sigev_value.sival_ptr = channel; | |
450 | ret = timer_create(CLOCKID, &sev, &channel->live_timer); | |
451 | if (ret == -1) { | |
452 | PERROR("timer_create"); | |
453 | } | |
454 | channel->live_timer_enabled = 1; | |
455 | ||
456 | its.it_value.tv_sec = live_timer_interval / 1000000; | |
69f60d21 | 457 | its.it_value.tv_nsec = (live_timer_interval % 1000000) * 1000; |
d3e2ba59 JD |
458 | its.it_interval.tv_sec = its.it_value.tv_sec; |
459 | its.it_interval.tv_nsec = its.it_value.tv_nsec; | |
460 | ||
461 | ret = timer_settime(channel->live_timer, 0, &its, NULL); | |
462 | if (ret == -1) { | |
463 | PERROR("timer_settime"); | |
464 | } | |
465 | } | |
466 | ||
467 | /* | |
468 | * Stop and delete timer. | |
469 | */ | |
470 | void consumer_timer_live_stop(struct lttng_consumer_channel *channel) | |
471 | { | |
472 | int ret; | |
473 | ||
474 | assert(channel); | |
475 | ||
d60962b2 JR |
476 | if (!channel->live_timer) { |
477 | return; | |
478 | } | |
479 | ||
d3e2ba59 JD |
480 | ret = timer_delete(channel->live_timer); |
481 | if (ret == -1) { | |
482 | PERROR("timer_delete"); | |
483 | } | |
484 | ||
d3e2ba59 JD |
485 | channel->live_timer = 0; |
486 | channel->live_timer_enabled = 0; | |
d60962b2 JR |
487 | |
488 | consumer_timer_signal_thread_qs(LTTNG_CONSUMER_SIG_LIVE); | |
d3e2ba59 JD |
489 | } |
490 | ||
331744e3 JD |
491 | /* |
492 | * Block the RT signals for the entire process. It must be called from the | |
493 | * consumer main before creating the threads | |
494 | */ | |
73664f81 | 495 | int consumer_signal_init(void) |
331744e3 JD |
496 | { |
497 | int ret; | |
498 | sigset_t mask; | |
499 | ||
500 | /* Block signal for entire process, so only our thread processes it. */ | |
501 | setmask(&mask); | |
502 | ret = pthread_sigmask(SIG_BLOCK, &mask, NULL); | |
503 | if (ret) { | |
504 | errno = ret; | |
505 | PERROR("pthread_sigmask"); | |
73664f81 | 506 | return -1; |
331744e3 | 507 | } |
73664f81 | 508 | return 0; |
331744e3 JD |
509 | } |
510 | ||
511 | /* | |
d3e2ba59 | 512 | * This thread is the sighandler for signals LTTNG_CONSUMER_SIG_SWITCH, |
5383626c MD |
513 | * LTTNG_CONSUMER_SIG_TEARDOWN, LTTNG_CONSUMER_SIG_LIVE, and |
514 | * LTTNG_CONSUMER_SIG_EXIT. | |
331744e3 | 515 | */ |
d3e2ba59 | 516 | void *consumer_timer_thread(void *data) |
331744e3 JD |
517 | { |
518 | int signr; | |
519 | sigset_t mask; | |
520 | siginfo_t info; | |
521 | struct lttng_consumer_local_data *ctx = data; | |
522 | ||
8a9acb74 MD |
523 | rcu_register_thread(); |
524 | ||
1fc79fb4 MD |
525 | health_register(health_consumerd, HEALTH_CONSUMERD_TYPE_METADATA_TIMER); |
526 | ||
2d57de81 MD |
527 | if (testpoint(consumerd_thread_metadata_timer)) { |
528 | goto error_testpoint; | |
529 | } | |
530 | ||
9ce5646a MD |
531 | health_code_update(); |
532 | ||
331744e3 JD |
533 | /* Only self thread will receive signal mask. */ |
534 | setmask(&mask); | |
535 | CMM_STORE_SHARED(timer_signal.tid, pthread_self()); | |
536 | ||
537 | while (1) { | |
9ce5646a MD |
538 | health_code_update(); |
539 | ||
540 | health_poll_entry(); | |
331744e3 | 541 | signr = sigwaitinfo(&mask, &info); |
9ce5646a | 542 | health_poll_exit(); |
331744e3 JD |
543 | if (signr == -1) { |
544 | if (errno != EINTR) { | |
545 | PERROR("sigwaitinfo"); | |
546 | } | |
547 | continue; | |
548 | } else if (signr == LTTNG_CONSUMER_SIG_SWITCH) { | |
549 | metadata_switch_timer(ctx, info.si_signo, &info, NULL); | |
550 | } else if (signr == LTTNG_CONSUMER_SIG_TEARDOWN) { | |
551 | cmm_smp_mb(); | |
552 | CMM_STORE_SHARED(timer_signal.qs_done, 1); | |
553 | cmm_smp_mb(); | |
554 | DBG("Signal timer metadata thread teardown"); | |
d3e2ba59 JD |
555 | } else if (signr == LTTNG_CONSUMER_SIG_LIVE) { |
556 | live_timer(ctx, info.si_signo, &info, NULL); | |
5383626c MD |
557 | } else if (signr == LTTNG_CONSUMER_SIG_EXIT) { |
558 | assert(consumer_quit); | |
559 | goto end; | |
331744e3 JD |
560 | } else { |
561 | ERR("Unexpected signal %d\n", info.si_signo); | |
562 | } | |
563 | } | |
564 | ||
2d57de81 MD |
565 | error_testpoint: |
566 | /* Only reached in testpoint error */ | |
567 | health_error(); | |
5383626c | 568 | end: |
1fc79fb4 | 569 | health_unregister(health_consumerd); |
8a9acb74 | 570 | rcu_unregister_thread(); |
331744e3 JD |
571 | return NULL; |
572 | } |