Commit | Line | Data |
---|---|---|
51230d70 | 1 | /* |
ab5be9fa MJ |
2 | * Copyright (C) 2011 Julien Desfossez <julien.desfossez@polymtl.ca> |
3 | * Copyright (C) 2011 Mathieu Desnoyers <mathieu.desnoyers@efficios.com> | |
4 | * Copyright (C) 2013 David Goulet <dgoulet@efficios.com> | |
51230d70 | 5 | * |
ab5be9fa | 6 | * SPDX-License-Identifier: GPL-2.0-only |
51230d70 | 7 | * |
51230d70 DG |
8 | */ |
9 | ||
6c1c0768 | 10 | #define _LGPL_SOURCE |
51230d70 | 11 | #include <assert.h> |
10a50311 | 12 | #include <inttypes.h> |
51230d70 DG |
13 | #include <sys/mman.h> |
14 | #include <unistd.h> | |
15 | ||
16 | #include <common/common.h> | |
1c20f0e2 | 17 | #include <common/index/index.h> |
94d49140 | 18 | #include <common/kernel-consumer/kernel-consumer.h> |
51230d70 DG |
19 | #include <common/relayd/relayd.h> |
20 | #include <common/ust-consumer/ust-consumer.h> | |
a2361a61 | 21 | #include <common/utils.h> |
51230d70 DG |
22 | |
23 | #include "consumer-stream.h" | |
24 | ||
25 | /* | |
26 | * RCU call to free stream. MUST only be used with call_rcu(). | |
27 | */ | |
28 | static void free_stream_rcu(struct rcu_head *head) | |
29 | { | |
30 | struct lttng_ht_node_u64 *node = | |
31 | caa_container_of(head, struct lttng_ht_node_u64, head); | |
32 | struct lttng_consumer_stream *stream = | |
33 | caa_container_of(node, struct lttng_consumer_stream, node); | |
34 | ||
35 | pthread_mutex_destroy(&stream->lock); | |
36 | free(stream); | |
37 | } | |
38 | ||
39 | /* | |
40 | * Close stream on the relayd side. This call can destroy a relayd if the | |
41 | * conditions are met. | |
42 | * | |
43 | * A RCU read side lock MUST be acquired if the relayd object was looked up in | |
44 | * a hash table before calling this. | |
45 | */ | |
46 | void consumer_stream_relayd_close(struct lttng_consumer_stream *stream, | |
47 | struct consumer_relayd_sock_pair *relayd) | |
48 | { | |
49 | int ret; | |
50 | ||
51 | assert(stream); | |
52 | assert(relayd); | |
53 | ||
d01178b6 DG |
54 | if (stream->sent_to_relayd) { |
55 | uatomic_dec(&relayd->refcount); | |
56 | assert(uatomic_read(&relayd->refcount) >= 0); | |
57 | } | |
51230d70 DG |
58 | |
59 | /* Closing streams requires to lock the control socket. */ | |
60 | pthread_mutex_lock(&relayd->ctrl_sock_mutex); | |
61 | ret = relayd_send_close_stream(&relayd->control_sock, | |
62 | stream->relayd_stream_id, | |
63 | stream->next_net_seq_num - 1); | |
64 | pthread_mutex_unlock(&relayd->ctrl_sock_mutex); | |
65 | if (ret < 0) { | |
9276e5c8 JR |
66 | ERR("Relayd send close stream failed. Cleaning up relayd %" PRIu64 ".", relayd->net_seq_idx); |
67 | lttng_consumer_cleanup_relayd(relayd); | |
51230d70 DG |
68 | } |
69 | ||
70 | /* Both conditions are met, we destroy the relayd. */ | |
71 | if (uatomic_read(&relayd->refcount) == 0 && | |
72 | uatomic_read(&relayd->destroy_flag)) { | |
73 | consumer_destroy_relayd(relayd); | |
74 | } | |
10a50311 | 75 | stream->net_seq_idx = (uint64_t) -1ULL; |
d01178b6 | 76 | stream->sent_to_relayd = 0; |
51230d70 DG |
77 | } |
78 | ||
79 | /* | |
80 | * Close stream's file descriptors and, if needed, close stream also on the | |
81 | * relayd side. | |
82 | * | |
83 | * The consumer data lock MUST be acquired. | |
84 | * The stream lock MUST be acquired. | |
85 | */ | |
86 | void consumer_stream_close(struct lttng_consumer_stream *stream) | |
87 | { | |
88 | int ret; | |
89 | struct consumer_relayd_sock_pair *relayd; | |
90 | ||
91 | assert(stream); | |
92 | ||
93 | switch (consumer_data.type) { | |
94 | case LTTNG_CONSUMER_KERNEL: | |
95 | if (stream->mmap_base != NULL) { | |
96 | ret = munmap(stream->mmap_base, stream->mmap_len); | |
97 | if (ret != 0) { | |
98 | PERROR("munmap"); | |
99 | } | |
100 | } | |
101 | ||
102 | if (stream->wait_fd >= 0) { | |
103 | ret = close(stream->wait_fd); | |
104 | if (ret) { | |
105 | PERROR("close"); | |
106 | } | |
10a50311 | 107 | stream->wait_fd = -1; |
51230d70 | 108 | } |
a2361a61 JD |
109 | if (stream->chan->output == CONSUMER_CHANNEL_SPLICE) { |
110 | utils_close_pipe(stream->splice_pipe); | |
111 | } | |
51230d70 DG |
112 | break; |
113 | case LTTNG_CONSUMER32_UST: | |
114 | case LTTNG_CONSUMER64_UST: | |
6d574024 DG |
115 | { |
116 | /* | |
117 | * Special case for the metadata since the wait fd is an internal pipe | |
118 | * polled in the metadata thread. | |
119 | */ | |
120 | if (stream->metadata_flag && stream->chan->monitor) { | |
121 | int rpipe = stream->ust_metadata_poll_pipe[0]; | |
122 | ||
123 | /* | |
124 | * This will stop the channel timer if one and close the write side | |
125 | * of the metadata poll pipe. | |
126 | */ | |
127 | lttng_ustconsumer_close_metadata(stream->chan); | |
128 | if (rpipe >= 0) { | |
129 | ret = close(rpipe); | |
130 | if (ret < 0) { | |
b4a650f3 | 131 | PERROR("closing metadata pipe read side"); |
6d574024 DG |
132 | } |
133 | stream->ust_metadata_poll_pipe[0] = -1; | |
134 | } | |
135 | } | |
51230d70 | 136 | break; |
6d574024 | 137 | } |
51230d70 DG |
138 | default: |
139 | ERR("Unknown consumer_data type"); | |
140 | assert(0); | |
141 | } | |
142 | ||
143 | /* Close output fd. Could be a socket or local file at this point. */ | |
144 | if (stream->out_fd >= 0) { | |
145 | ret = close(stream->out_fd); | |
146 | if (ret) { | |
147 | PERROR("close"); | |
148 | } | |
10a50311 | 149 | stream->out_fd = -1; |
51230d70 DG |
150 | } |
151 | ||
f8f3885c MD |
152 | if (stream->index_file) { |
153 | lttng_index_file_put(stream->index_file); | |
154 | stream->index_file = NULL; | |
309167d2 JD |
155 | } |
156 | ||
d2956687 JG |
157 | lttng_trace_chunk_put(stream->trace_chunk); |
158 | stream->trace_chunk = NULL; | |
159 | ||
51230d70 DG |
160 | /* Check and cleanup relayd if needed. */ |
161 | rcu_read_lock(); | |
162 | relayd = consumer_find_relayd(stream->net_seq_idx); | |
163 | if (relayd != NULL) { | |
164 | consumer_stream_relayd_close(stream, relayd); | |
165 | } | |
166 | rcu_read_unlock(); | |
167 | } | |
168 | ||
169 | /* | |
170 | * Delete the stream from all possible hash tables. | |
171 | * | |
172 | * The consumer data lock MUST be acquired. | |
173 | * The stream lock MUST be acquired. | |
174 | */ | |
175 | void consumer_stream_delete(struct lttng_consumer_stream *stream, | |
176 | struct lttng_ht *ht) | |
177 | { | |
178 | int ret; | |
179 | struct lttng_ht_iter iter; | |
180 | ||
181 | assert(stream); | |
10a50311 JD |
182 | /* Should NEVER be called not in monitor mode. */ |
183 | assert(stream->chan->monitor); | |
51230d70 DG |
184 | |
185 | rcu_read_lock(); | |
186 | ||
187 | if (ht) { | |
188 | iter.iter.node = &stream->node.node; | |
189 | ret = lttng_ht_del(ht, &iter); | |
190 | assert(!ret); | |
191 | } | |
192 | ||
193 | /* Delete from stream per channel ID hash table. */ | |
194 | iter.iter.node = &stream->node_channel_id.node; | |
195 | /* | |
196 | * The returned value is of no importance. Even if the node is NOT in the | |
197 | * hash table, we continue since we may have been called by a code path | |
198 | * that did not add the stream to a (all) hash table. Same goes for the | |
199 | * next call ht del call. | |
200 | */ | |
201 | (void) lttng_ht_del(consumer_data.stream_per_chan_id_ht, &iter); | |
202 | ||
203 | /* Delete from the global stream list. */ | |
204 | iter.iter.node = &stream->node_session_id.node; | |
205 | /* See the previous ht del on why we ignore the returned value. */ | |
206 | (void) lttng_ht_del(consumer_data.stream_list_ht, &iter); | |
207 | ||
208 | rcu_read_unlock(); | |
209 | ||
6d574024 DG |
210 | if (!stream->metadata_flag) { |
211 | /* Decrement the stream count of the global consumer data. */ | |
212 | assert(consumer_data.stream_count > 0); | |
213 | consumer_data.stream_count--; | |
214 | } | |
51230d70 DG |
215 | } |
216 | ||
217 | /* | |
218 | * Free the given stream within a RCU call. | |
219 | */ | |
220 | void consumer_stream_free(struct lttng_consumer_stream *stream) | |
221 | { | |
222 | assert(stream); | |
223 | ||
224 | call_rcu(&stream->node.head, free_stream_rcu); | |
225 | } | |
226 | ||
227 | /* | |
10a50311 | 228 | * Destroy the stream's buffers of the tracer. |
51230d70 | 229 | */ |
10a50311 | 230 | void consumer_stream_destroy_buffers(struct lttng_consumer_stream *stream) |
51230d70 | 231 | { |
10a50311 JD |
232 | assert(stream); |
233 | ||
234 | switch (consumer_data.type) { | |
235 | case LTTNG_CONSUMER_KERNEL: | |
236 | break; | |
237 | case LTTNG_CONSUMER32_UST: | |
238 | case LTTNG_CONSUMER64_UST: | |
239 | lttng_ustconsumer_del_stream(stream); | |
240 | break; | |
241 | default: | |
242 | ERR("Unknown consumer_data type"); | |
243 | assert(0); | |
244 | } | |
245 | } | |
51230d70 | 246 | |
10a50311 | 247 | /* |
4891ece8 | 248 | * Destroy and close a already created stream. |
10a50311 | 249 | */ |
4891ece8 | 250 | static void destroy_close_stream(struct lttng_consumer_stream *stream) |
10a50311 | 251 | { |
51230d70 DG |
252 | assert(stream); |
253 | ||
4891ece8 | 254 | DBG("Consumer stream destroy monitored key: %" PRIu64, stream->key); |
10a50311 JD |
255 | |
256 | /* Destroy tracer buffers of the stream. */ | |
257 | consumer_stream_destroy_buffers(stream); | |
258 | /* Close down everything including the relayd if one. */ | |
259 | consumer_stream_close(stream); | |
260 | } | |
51230d70 | 261 | |
10a50311 | 262 | /* |
4891ece8 DG |
263 | * Decrement the stream's channel refcount and if down to 0, return the channel |
264 | * pointer so it can be destroyed by the caller or NULL if not. | |
10a50311 | 265 | */ |
4891ece8 DG |
266 | static struct lttng_consumer_channel *unref_channel( |
267 | struct lttng_consumer_stream *stream) | |
10a50311 | 268 | { |
4891ece8 DG |
269 | struct lttng_consumer_channel *free_chan = NULL; |
270 | ||
10a50311 | 271 | assert(stream); |
4891ece8 | 272 | assert(stream->chan); |
10a50311 | 273 | |
4891ece8 DG |
274 | /* Update refcount of channel and see if we need to destroy it. */ |
275 | if (!uatomic_sub_return(&stream->chan->refcount, 1) | |
276 | && !uatomic_read(&stream->chan->nb_init_stream_left)) { | |
277 | free_chan = stream->chan; | |
278 | } | |
51230d70 | 279 | |
4891ece8 | 280 | return free_chan; |
10a50311 | 281 | } |
51230d70 | 282 | |
10a50311 JD |
283 | /* |
284 | * Destroy a stream completely. This will delete, close and free the stream. | |
285 | * Once return, the stream is NO longer usable. Its channel may get destroyed | |
286 | * if conditions are met for a monitored stream. | |
287 | * | |
288 | * This MUST be called WITHOUT the consumer data and stream lock acquired if | |
289 | * the stream is in _monitor_ mode else it does not matter. | |
290 | */ | |
291 | void consumer_stream_destroy(struct lttng_consumer_stream *stream, | |
292 | struct lttng_ht *ht) | |
293 | { | |
294 | assert(stream); | |
295 | ||
296 | /* Stream is in monitor mode. */ | |
4891ece8 | 297 | if (stream->monitor) { |
10a50311 | 298 | struct lttng_consumer_channel *free_chan = NULL; |
51230d70 | 299 | |
4891ece8 DG |
300 | /* |
301 | * This means that the stream was successfully removed from the streams | |
302 | * list of the channel and sent to the right thread managing this | |
303 | * stream thus being globally visible. | |
304 | */ | |
305 | if (stream->globally_visible) { | |
306 | pthread_mutex_lock(&consumer_data.lock); | |
a9838785 | 307 | pthread_mutex_lock(&stream->chan->lock); |
4891ece8 DG |
308 | pthread_mutex_lock(&stream->lock); |
309 | /* Remove every reference of the stream in the consumer. */ | |
310 | consumer_stream_delete(stream, ht); | |
311 | ||
312 | destroy_close_stream(stream); | |
313 | ||
314 | /* Update channel's refcount of the stream. */ | |
315 | free_chan = unref_channel(stream); | |
316 | ||
317 | /* Indicates that the consumer data state MUST be updated after this. */ | |
318 | consumer_data.need_update = 1; | |
319 | ||
320 | pthread_mutex_unlock(&stream->lock); | |
a9838785 | 321 | pthread_mutex_unlock(&stream->chan->lock); |
4891ece8 DG |
322 | pthread_mutex_unlock(&consumer_data.lock); |
323 | } else { | |
324 | /* | |
325 | * If the stream is not visible globally, this needs to be done | |
326 | * outside of the consumer data lock section. | |
327 | */ | |
328 | free_chan = unref_channel(stream); | |
10a50311 JD |
329 | } |
330 | ||
10a50311 JD |
331 | if (free_chan) { |
332 | consumer_del_channel(free_chan); | |
333 | } | |
334 | } else { | |
4891ece8 | 335 | destroy_close_stream(stream); |
51230d70 DG |
336 | } |
337 | ||
338 | /* Free stream within a RCU call. */ | |
d2956687 JG |
339 | lttng_trace_chunk_put(stream->trace_chunk); |
340 | stream->trace_chunk = NULL; | |
51230d70 DG |
341 | consumer_stream_free(stream); |
342 | } | |
1c20f0e2 JD |
343 | |
344 | /* | |
345 | * Write index of a specific stream either on the relayd or local disk. | |
346 | * | |
347 | * Return 0 on success or else a negative value. | |
348 | */ | |
349 | int consumer_stream_write_index(struct lttng_consumer_stream *stream, | |
f8f3885c | 350 | struct ctf_packet_index *element) |
1c20f0e2 JD |
351 | { |
352 | int ret; | |
1c20f0e2 JD |
353 | |
354 | assert(stream); | |
f8f3885c | 355 | assert(element); |
1c20f0e2 JD |
356 | |
357 | rcu_read_lock(); | |
23c910e5 JR |
358 | if (stream->net_seq_idx != (uint64_t) -1ULL) { |
359 | struct consumer_relayd_sock_pair *relayd; | |
360 | relayd = consumer_find_relayd(stream->net_seq_idx); | |
361 | if (relayd) { | |
362 | pthread_mutex_lock(&relayd->ctrl_sock_mutex); | |
363 | ret = relayd_send_index(&relayd->control_sock, element, | |
1c20f0e2 | 364 | stream->relayd_stream_id, stream->next_net_seq_num - 1); |
9276e5c8 JR |
365 | if (ret < 0) { |
366 | /* | |
367 | * Communication error with lttng-relayd, | |
368 | * perform cleanup now | |
369 | */ | |
370 | ERR("Relayd send index failed. Cleaning up relayd %" PRIu64 ".", relayd->net_seq_idx); | |
371 | lttng_consumer_cleanup_relayd(relayd); | |
372 | ret = -1; | |
373 | } | |
23c910e5 JR |
374 | pthread_mutex_unlock(&relayd->ctrl_sock_mutex); |
375 | } else { | |
376 | ERR("Stream %" PRIu64 " relayd ID %" PRIu64 " unknown. Can't write index.", | |
377 | stream->key, stream->net_seq_idx); | |
378 | ret = -1; | |
379 | } | |
1c20f0e2 | 380 | } else { |
f8f3885c | 381 | if (lttng_index_file_write(stream->index_file, element)) { |
6cd525e8 MD |
382 | ret = -1; |
383 | } else { | |
384 | ret = 0; | |
385 | } | |
1c20f0e2 JD |
386 | } |
387 | if (ret < 0) { | |
388 | goto error; | |
389 | } | |
390 | ||
391 | error: | |
392 | rcu_read_unlock(); | |
393 | return ret; | |
394 | } | |
94d49140 JD |
395 | |
396 | /* | |
e5ca40ee | 397 | * Actually do the metadata sync using the given metadata stream. |
94d49140 | 398 | * |
e5ca40ee DG |
399 | * Return 0 on success else a negative value. ENODATA can be returned also |
400 | * indicating that there is no metadata available for that stream. | |
94d49140 | 401 | */ |
e5ca40ee DG |
402 | static int do_sync_metadata(struct lttng_consumer_stream *metadata, |
403 | struct lttng_consumer_local_data *ctx) | |
94d49140 JD |
404 | { |
405 | int ret; | |
94d49140 | 406 | |
e5ca40ee DG |
407 | assert(metadata); |
408 | assert(metadata->metadata_flag); | |
94d49140 JD |
409 | assert(ctx); |
410 | ||
94d49140 JD |
411 | /* |
412 | * In UST, since we have to write the metadata from the cache packet | |
413 | * by packet, we might need to start this procedure multiple times | |
414 | * until all the metadata from the cache has been extracted. | |
415 | */ | |
416 | do { | |
417 | /* | |
418 | * Steps : | |
419 | * - Lock the metadata stream | |
420 | * - Check if metadata stream node was deleted before locking. | |
421 | * - if yes, release and return success | |
422 | * - Check if new metadata is ready (flush + snapshot pos) | |
423 | * - If nothing : release and return. | |
424 | * - Lock the metadata_rdv_lock | |
425 | * - Unlock the metadata stream | |
426 | * - cond_wait on metadata_rdv to wait the wakeup from the | |
427 | * metadata thread | |
428 | * - Unlock the metadata_rdv_lock | |
429 | */ | |
430 | pthread_mutex_lock(&metadata->lock); | |
431 | ||
432 | /* | |
433 | * There is a possibility that we were able to acquire a reference on the | |
434 | * stream from the RCU hash table but between then and now, the node might | |
435 | * have been deleted just before the lock is acquired. Thus, after locking, | |
436 | * we make sure the metadata node has not been deleted which means that the | |
437 | * buffers are closed. | |
438 | * | |
439 | * In that case, there is no need to sync the metadata hence returning a | |
440 | * success return code. | |
441 | */ | |
442 | ret = cds_lfht_is_node_deleted(&metadata->node.node); | |
443 | if (ret) { | |
444 | ret = 0; | |
445 | goto end_unlock_mutex; | |
446 | } | |
447 | ||
448 | switch (ctx->type) { | |
449 | case LTTNG_CONSUMER_KERNEL: | |
450 | /* | |
451 | * Empty the metadata cache and flush the current stream. | |
452 | */ | |
453 | ret = lttng_kconsumer_sync_metadata(metadata); | |
454 | break; | |
455 | case LTTNG_CONSUMER32_UST: | |
456 | case LTTNG_CONSUMER64_UST: | |
457 | /* | |
458 | * Ask the sessiond if we have new metadata waiting and update the | |
459 | * consumer metadata cache. | |
460 | */ | |
461 | ret = lttng_ustconsumer_sync_metadata(ctx, metadata); | |
462 | break; | |
463 | default: | |
464 | assert(0); | |
465 | ret = -1; | |
466 | break; | |
467 | } | |
468 | /* | |
469 | * Error or no new metadata, we exit here. | |
470 | */ | |
471 | if (ret <= 0 || ret == ENODATA) { | |
472 | goto end_unlock_mutex; | |
473 | } | |
474 | ||
475 | /* | |
476 | * At this point, new metadata have been flushed, so we wait on the | |
477 | * rendez-vous point for the metadata thread to wake us up when it | |
478 | * finishes consuming the metadata and continue execution. | |
479 | */ | |
480 | ||
481 | pthread_mutex_lock(&metadata->metadata_rdv_lock); | |
482 | ||
483 | /* | |
484 | * Release metadata stream lock so the metadata thread can process it. | |
485 | */ | |
486 | pthread_mutex_unlock(&metadata->lock); | |
487 | ||
488 | /* | |
489 | * Wait on the rendez-vous point. Once woken up, it means the metadata was | |
490 | * consumed and thus synchronization is achieved. | |
491 | */ | |
492 | pthread_cond_wait(&metadata->metadata_rdv, &metadata->metadata_rdv_lock); | |
493 | pthread_mutex_unlock(&metadata->metadata_rdv_lock); | |
494 | } while (ret == EAGAIN); | |
495 | ||
e5ca40ee DG |
496 | /* Success */ |
497 | return 0; | |
94d49140 JD |
498 | |
499 | end_unlock_mutex: | |
500 | pthread_mutex_unlock(&metadata->lock); | |
e5ca40ee DG |
501 | return ret; |
502 | } | |
503 | ||
504 | /* | |
505 | * Synchronize the metadata using a given session ID. A successful acquisition | |
506 | * of a metadata stream will trigger a request to the session daemon and a | |
507 | * snapshot so the metadata thread can consume it. | |
508 | * | |
509 | * This function call is a rendez-vous point between the metadata thread and | |
510 | * the data thread. | |
511 | * | |
512 | * Return 0 on success or else a negative value. | |
513 | */ | |
514 | int consumer_stream_sync_metadata(struct lttng_consumer_local_data *ctx, | |
515 | uint64_t session_id) | |
516 | { | |
517 | int ret; | |
518 | struct lttng_consumer_stream *stream = NULL; | |
519 | struct lttng_ht_iter iter; | |
520 | struct lttng_ht *ht; | |
521 | ||
522 | assert(ctx); | |
523 | ||
524 | /* Ease our life a bit. */ | |
525 | ht = consumer_data.stream_list_ht; | |
526 | ||
527 | rcu_read_lock(); | |
528 | ||
529 | /* Search the metadata associated with the session id of the given stream. */ | |
530 | ||
531 | cds_lfht_for_each_entry_duplicate(ht->ht, | |
532 | ht->hash_fct(&session_id, lttng_ht_seed), ht->match_fct, | |
533 | &session_id, &iter.iter, stream, node_session_id.node) { | |
534 | if (!stream->metadata_flag) { | |
535 | continue; | |
536 | } | |
537 | ||
538 | ret = do_sync_metadata(stream, ctx); | |
539 | if (ret < 0) { | |
540 | goto end; | |
541 | } | |
542 | } | |
543 | ||
544 | /* | |
545 | * Force return code to 0 (success) since ret might be ENODATA for instance | |
546 | * which is not an error but rather that we should come back. | |
547 | */ | |
548 | ret = 0; | |
549 | ||
550 | end: | |
94d49140 JD |
551 | rcu_read_unlock(); |
552 | return ret; | |
553 | } | |
d2956687 JG |
554 | |
555 | int consumer_stream_create_output_files(struct lttng_consumer_stream *stream, | |
556 | bool create_index) | |
557 | { | |
558 | int ret; | |
559 | enum lttng_trace_chunk_status chunk_status; | |
560 | const int flags = O_WRONLY | O_CREAT | O_TRUNC; | |
561 | const mode_t mode = S_IRUSR | S_IWUSR | S_IRGRP | S_IWGRP; | |
562 | char stream_path[LTTNG_PATH_MAX]; | |
563 | ||
564 | ASSERT_LOCKED(stream->lock); | |
565 | assert(stream->trace_chunk); | |
566 | ||
567 | ret = utils_stream_file_path(stream->chan->pathname, stream->name, | |
568 | stream->chan->tracefile_size, | |
3b16476a | 569 | stream->tracefile_count_current, NULL, |
d2956687 JG |
570 | stream_path, sizeof(stream_path)); |
571 | if (ret < 0) { | |
572 | goto end; | |
573 | } | |
574 | ||
575 | if (stream->out_fd >= 0) { | |
576 | ret = close(stream->out_fd); | |
577 | if (ret < 0) { | |
578 | PERROR("Failed to close stream file \"%s\"", | |
579 | stream->name); | |
580 | goto end; | |
581 | } | |
582 | stream->out_fd = -1; | |
583 | } | |
584 | ||
585 | DBG("Opening stream output file \"%s\"", stream_path); | |
586 | chunk_status = lttng_trace_chunk_open_file(stream->trace_chunk, stream_path, | |
3ff5c5db | 587 | flags, mode, &stream->out_fd, false); |
d2956687 JG |
588 | if (chunk_status != LTTNG_TRACE_CHUNK_STATUS_OK) { |
589 | ERR("Failed to open stream file \"%s\"", stream->name); | |
590 | ret = -1; | |
591 | goto end; | |
592 | } | |
593 | ||
594 | if (!stream->metadata_flag && (create_index || stream->index_file)) { | |
595 | if (stream->index_file) { | |
596 | lttng_index_file_put(stream->index_file); | |
597 | } | |
3ff5c5db | 598 | chunk_status = lttng_index_file_create_from_trace_chunk( |
d2956687 JG |
599 | stream->trace_chunk, |
600 | stream->chan->pathname, | |
601 | stream->name, | |
602 | stream->chan->tracefile_size, | |
603 | stream->tracefile_count_current, | |
604 | CTF_INDEX_MAJOR, CTF_INDEX_MINOR, | |
3ff5c5db MD |
605 | false, &stream->index_file); |
606 | if (chunk_status != LTTNG_TRACE_CHUNK_STATUS_OK) { | |
d2956687 JG |
607 | ret = -1; |
608 | goto end; | |
609 | } | |
610 | } | |
611 | ||
612 | /* Reset current size because we just perform a rotation. */ | |
613 | stream->tracefile_size_current = 0; | |
614 | stream->out_fd_offset = 0; | |
615 | end: | |
616 | return ret; | |
617 | } | |
618 | ||
619 | int consumer_stream_rotate_output_files(struct lttng_consumer_stream *stream) | |
620 | { | |
621 | int ret; | |
622 | ||
623 | stream->tracefile_count_current++; | |
624 | if (stream->chan->tracefile_count > 0) { | |
625 | stream->tracefile_count_current %= | |
626 | stream->chan->tracefile_count; | |
627 | } | |
628 | ||
629 | DBG("Rotating output files of stream \"%s\"", stream->name); | |
630 | ret = consumer_stream_create_output_files(stream, true); | |
631 | if (ret) { | |
632 | goto end; | |
633 | } | |
634 | ||
635 | end: | |
636 | return ret; | |
637 | } | |
cdb72e4e JG |
638 | |
639 | bool consumer_stream_is_deleted(struct lttng_consumer_stream *stream) | |
640 | { | |
641 | /* | |
642 | * This function does not take a const stream since | |
643 | * cds_lfht_is_node_deleted was not const before liburcu 0.12. | |
644 | */ | |
645 | assert(stream); | |
646 | return cds_lfht_is_node_deleted(&stream->node.node); | |
647 | } |