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3bd1e081 MD |
1 | /* |
2 | * Copyright (C) 2011 - Julien Desfossez <julien.desfossez@polymtl.ca> | |
00e2e675 DG |
3 | * Mathieu Desnoyers <mathieu.desnoyers@efficios.com> |
4 | * 2012 - David Goulet <dgoulet@efficios.com> | |
82528808 | 5 | * 2018 - Jérémie Galarneau <jeremie.galarneau@efficios.com> |
3bd1e081 | 6 | * |
d14d33bf AM |
7 | * This program is free software; you can redistribute it and/or modify |
8 | * it under the terms of the GNU General Public License, version 2 only, | |
9 | * as published by the Free Software Foundation. | |
3bd1e081 | 10 | * |
d14d33bf AM |
11 | * This program is distributed in the hope that it will be useful, but WITHOUT |
12 | * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or | |
13 | * FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License for | |
14 | * more details. | |
3bd1e081 | 15 | * |
d14d33bf AM |
16 | * You should have received a copy of the GNU General Public License along |
17 | * with this program; if not, write to the Free Software Foundation, Inc., | |
18 | * 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA. | |
3bd1e081 MD |
19 | */ |
20 | ||
f02e1e8a DG |
21 | #ifndef LIB_CONSUMER_H |
22 | #define LIB_CONSUMER_H | |
3bd1e081 MD |
23 | |
24 | #include <limits.h> | |
25 | #include <poll.h> | |
6df2e2c9 | 26 | #include <unistd.h> |
ffe60014 | 27 | #include <urcu/list.h> |
e4421fec | 28 | |
3bd1e081 | 29 | #include <lttng/lttng.h> |
10a8a223 | 30 | |
b9182dd9 DG |
31 | #include <common/hashtable/hashtable.h> |
32 | #include <common/compat/fcntl.h> | |
ffe60014 | 33 | #include <common/compat/uuid.h> |
00e2e675 | 34 | #include <common/sessiond-comm/sessiond-comm.h> |
acdb9057 | 35 | #include <common/pipe.h> |
50adc264 | 36 | #include <common/index/ctf-index.h> |
a335e585 | 37 | #include <common/trace-chunk-registry.h> |
e5148e25 | 38 | #include <common/credentials.h> |
b770aa7f | 39 | #include <common/buffer-view.h> |
3bd1e081 | 40 | |
6f1177cf JG |
41 | struct lttng_consumer_local_data; |
42 | ||
3bd1e081 MD |
43 | /* Commands for consumer */ |
44 | enum lttng_consumer_command { | |
45 | LTTNG_CONSUMER_ADD_CHANNEL, | |
46 | LTTNG_CONSUMER_ADD_STREAM, | |
47 | /* pause, delete, active depending on fd state */ | |
48 | LTTNG_CONSUMER_UPDATE_STREAM, | |
49 | /* inform the consumer to quit when all fd has hang up */ | |
84382d49 | 50 | LTTNG_CONSUMER_STOP, /* deprecated */ |
00e2e675 | 51 | LTTNG_CONSUMER_ADD_RELAYD_SOCKET, |
173af62f DG |
52 | /* Inform the consumer to kill a specific relayd connection */ |
53 | LTTNG_CONSUMER_DESTROY_RELAYD, | |
53632229 | 54 | /* Return to the sessiond if there is data pending for a session */ |
6d805429 | 55 | LTTNG_CONSUMER_DATA_PENDING, |
ffe60014 DG |
56 | /* Consumer creates a channel and returns it to sessiond. */ |
57 | LTTNG_CONSUMER_ASK_CHANNEL_CREATION, | |
58 | LTTNG_CONSUMER_GET_CHANNEL, | |
59 | LTTNG_CONSUMER_DESTROY_CHANNEL, | |
d88aee68 DG |
60 | LTTNG_CONSUMER_PUSH_METADATA, |
61 | LTTNG_CONSUMER_CLOSE_METADATA, | |
62 | LTTNG_CONSUMER_SETUP_METADATA, | |
7972aab2 | 63 | LTTNG_CONSUMER_FLUSH_CHANNEL, |
6dc3064a DG |
64 | LTTNG_CONSUMER_SNAPSHOT_CHANNEL, |
65 | LTTNG_CONSUMER_SNAPSHOT_METADATA, | |
a4baae1b | 66 | LTTNG_CONSUMER_STREAMS_SENT, |
fb83fe64 JD |
67 | LTTNG_CONSUMER_DISCARDED_EVENTS, |
68 | LTTNG_CONSUMER_LOST_PACKETS, | |
0dd01979 | 69 | LTTNG_CONSUMER_CLEAR_QUIESCENT_CHANNEL, |
b3530820 | 70 | LTTNG_CONSUMER_SET_CHANNEL_MONITOR_PIPE, |
b99a8d42 | 71 | LTTNG_CONSUMER_ROTATE_CHANNEL, |
fc181d72 | 72 | LTTNG_CONSUMER_INIT, |
e5148e25 JG |
73 | LTTNG_CONSUMER_CREATE_TRACE_CHUNK, |
74 | LTTNG_CONSUMER_CLOSE_TRACE_CHUNK, | |
75 | LTTNG_CONSUMER_TRACE_CHUNK_EXISTS, | |
3bd1e081 MD |
76 | }; |
77 | ||
3bd1e081 MD |
78 | enum lttng_consumer_type { |
79 | LTTNG_CONSUMER_UNKNOWN = 0, | |
80 | LTTNG_CONSUMER_KERNEL, | |
7753dea8 MD |
81 | LTTNG_CONSUMER64_UST, |
82 | LTTNG_CONSUMER32_UST, | |
3bd1e081 MD |
83 | }; |
84 | ||
8994307f DG |
85 | enum consumer_endpoint_status { |
86 | CONSUMER_ENDPOINT_ACTIVE, | |
87 | CONSUMER_ENDPOINT_INACTIVE, | |
88 | }; | |
89 | ||
ffe60014 DG |
90 | enum consumer_channel_output { |
91 | CONSUMER_CHANNEL_MMAP = 0, | |
92 | CONSUMER_CHANNEL_SPLICE = 1, | |
93 | }; | |
94 | ||
95 | enum consumer_channel_type { | |
96 | CONSUMER_CHANNEL_TYPE_METADATA = 0, | |
d88aee68 | 97 | CONSUMER_CHANNEL_TYPE_DATA = 1, |
ffe60014 DG |
98 | }; |
99 | ||
51230d70 DG |
100 | extern struct lttng_consumer_global_data consumer_data; |
101 | ||
ffe60014 DG |
102 | struct stream_list { |
103 | struct cds_list_head head; | |
104 | unsigned int count; | |
105 | }; | |
106 | ||
331744e3 JD |
107 | /* Stub. */ |
108 | struct consumer_metadata_cache; | |
109 | ||
3bd1e081 | 110 | struct lttng_consumer_channel { |
e5148e25 JG |
111 | /* Is the channel published in the channel hash tables? */ |
112 | bool is_published; | |
3206380a JG |
113 | /* |
114 | * Was the channel deleted (logically) and waiting to be reclaimed? | |
115 | * If this flag is set, no modification that is not cleaned-up by the | |
116 | * RCU reclamation callback should be made | |
117 | */ | |
118 | bool is_deleted; | |
ffe60014 | 119 | /* HT node used for consumer_data.channel_ht */ |
d88aee68 | 120 | struct lttng_ht_node_u64 node; |
0fc67d9b JG |
121 | /* HT node used for consumer_data.channels_by_session_id_ht */ |
122 | struct lttng_ht_node_u64 channels_by_session_id_ht_node; | |
ffe60014 | 123 | /* Indexed key. Incremented value in the consumer. */ |
d88aee68 | 124 | uint64_t key; |
ffe60014 DG |
125 | /* Number of streams referencing this channel */ |
126 | int refcount; | |
127 | /* Tracing session id on the session daemon side. */ | |
128 | uint64_t session_id; | |
e5148e25 JG |
129 | /* Current trace chunk of the session in which this channel exists. */ |
130 | struct lttng_trace_chunk *trace_chunk; | |
1950109e JD |
131 | /* |
132 | * Session id when requesting metadata to the session daemon for | |
133 | * a session with per-PID buffers. | |
134 | */ | |
135 | uint64_t session_id_per_pid; | |
61ace1d3 JG |
136 | /* |
137 | * In the case of local streams, this field contains the channel's | |
138 | * output path; a path relative to the session's output path. | |
139 | * e.g. ust/uid/1000/64-bit | |
140 | * | |
141 | * In the case of remote streams, the contents of this field depends | |
142 | * on the version of the relay daemon peer. For 2.11+ peers, the | |
143 | * contents are the same as in the local case. However, for legacy | |
144 | * peers, this contains a path of the form: | |
145 | * /hostname/session_path/ust/uid/1000/64-bit | |
146 | */ | |
ffe60014 DG |
147 | char pathname[PATH_MAX]; |
148 | /* Channel name. */ | |
149 | char name[LTTNG_SYMBOL_NAME_LEN]; | |
da009f2c MD |
150 | /* Relayd id of the channel. -1ULL if it does not apply. */ |
151 | uint64_t relayd_id; | |
c30aaa51 | 152 | /* |
ffe60014 DG |
153 | * Number of streams NOT initialized yet. This is used in order to not |
154 | * delete this channel if streams are getting initialized. | |
c30aaa51 | 155 | */ |
ffe60014 DG |
156 | unsigned int nb_init_stream_left; |
157 | /* Output type (mmap or splice). */ | |
158 | enum consumer_channel_output output; | |
159 | /* Channel type for stream */ | |
160 | enum consumer_channel_type type; | |
c30aaa51 | 161 | |
3bd1e081 | 162 | /* For UST */ |
567eb353 | 163 | uid_t ust_app_uid; /* Application UID. */ |
ffe60014 DG |
164 | struct ustctl_consumer_channel *uchan; |
165 | unsigned char uuid[UUID_STR_LEN]; | |
166 | /* | |
167 | * Temporary stream list used to store the streams once created and waiting | |
168 | * to be sent to the session daemon by receiving the | |
169 | * LTTNG_CONSUMER_GET_CHANNEL. | |
170 | */ | |
171 | struct stream_list streams; | |
07b86b52 | 172 | |
d88aee68 DG |
173 | /* |
174 | * Set if the channel is metadata. We keep a reference to the stream | |
175 | * because we have to flush data once pushed by the session daemon. For a | |
176 | * regular channel, this is always set to NULL. | |
177 | */ | |
178 | struct lttng_consumer_stream *metadata_stream; | |
d8ef542d MD |
179 | |
180 | /* for UST */ | |
181 | int wait_fd; | |
182 | /* Node within channel thread ht */ | |
183 | struct lttng_ht_node_u64 wait_fd_node; | |
331744e3 JD |
184 | |
185 | /* Metadata cache is metadata channel */ | |
186 | struct consumer_metadata_cache *metadata_cache; | |
cf0bcb51 | 187 | |
d3e2ba59 | 188 | /* For UST metadata periodical flush */ |
331744e3 JD |
189 | int switch_timer_enabled; |
190 | timer_t switch_timer; | |
4419b4fb MD |
191 | int switch_timer_error; |
192 | ||
d3e2ba59 JD |
193 | /* For the live mode */ |
194 | int live_timer_enabled; | |
195 | timer_t live_timer; | |
196 | int live_timer_error; | |
3ef395a9 JG |
197 | /* Channel is part of a live session ? */ |
198 | bool is_live; | |
d3e2ba59 | 199 | |
b3530820 JG |
200 | /* For channel monitoring timer. */ |
201 | int monitor_timer_enabled; | |
202 | timer_t monitor_timer; | |
203 | ||
1624d5b7 JD |
204 | /* On-disk circular buffer */ |
205 | uint64_t tracefile_size; | |
206 | uint64_t tracefile_count; | |
2bba9e53 DG |
207 | /* |
208 | * Monitor or not the streams of this channel meaning this indicates if the | |
209 | * streams should be sent to the data/metadata thread or added to the no | |
210 | * monitor list of the channel. | |
211 | */ | |
212 | unsigned int monitor; | |
a9838785 MD |
213 | |
214 | /* | |
215 | * Channel lock. | |
216 | * | |
ec6ea7d0 MD |
217 | * This lock protects against concurrent update of channel. |
218 | * | |
a9838785 | 219 | * This is nested INSIDE the consumer data lock. |
ec6ea7d0 | 220 | * This is nested OUTSIDE the channel timer lock. |
a9838785 MD |
221 | * This is nested OUTSIDE the metadata cache lock. |
222 | * This is nested OUTSIDE stream lock. | |
223 | * This is nested OUTSIDE consumer_relayd_sock_pair lock. | |
224 | */ | |
225 | pthread_mutex_t lock; | |
ec6ea7d0 MD |
226 | |
227 | /* | |
228 | * Channel teardown lock. | |
229 | * | |
230 | * This lock protect against teardown of channel. It is _never_ | |
231 | * taken by the timer handler. | |
232 | * | |
233 | * This is nested INSIDE the consumer data lock. | |
234 | * This is nested INSIDE the channel lock. | |
235 | * This is nested OUTSIDE the metadata cache lock. | |
236 | * This is nested OUTSIDE stream lock. | |
237 | * This is nested OUTSIDE consumer_relayd_sock_pair lock. | |
238 | */ | |
239 | pthread_mutex_t timer_lock; | |
ecc48a90 JD |
240 | |
241 | /* Timer value in usec for live streaming. */ | |
242 | unsigned int live_timer_interval; | |
d7ba1388 | 243 | |
4628484a MD |
244 | int *stream_fds; |
245 | int nr_stream_fds; | |
3d071855 | 246 | char root_shm_path[PATH_MAX]; |
d7ba1388 | 247 | char shm_path[PATH_MAX]; |
e5148e25 JG |
248 | /* Only set for UST channels. */ |
249 | LTTNG_OPTIONAL(struct lttng_credentials) buffer_credentials; | |
fb83fe64 JD |
250 | /* Total number of discarded events for that channel. */ |
251 | uint64_t discarded_events; | |
252 | /* Total number of missed packets due to overwriting (overwrite). */ | |
253 | uint64_t lost_packets; | |
001b7e62 MD |
254 | |
255 | bool streams_sent_to_relayd; | |
3bd1e081 MD |
256 | }; |
257 | ||
6f1177cf JG |
258 | struct stream_subbuffer { |
259 | union { | |
260 | /* | |
261 | * CONSUMER_CHANNEL_SPLICE | |
262 | * No ownership assumed. | |
263 | */ | |
264 | int fd; | |
265 | /* CONSUMER_CHANNEL_MMAP */ | |
266 | struct lttng_buffer_view buffer; | |
267 | } buffer; | |
268 | union { | |
269 | /* | |
270 | * Common members are fine to access through either | |
271 | * union entries (as per C11, Common Initial Sequence). | |
272 | */ | |
273 | struct { | |
274 | unsigned long subbuf_size; | |
275 | unsigned long padded_subbuf_size; | |
276 | uint64_t version; | |
8d18bcae JG |
277 | /* |
278 | * Left unset when unsupported. | |
279 | * | |
280 | * Indicates that this is the last sub-buffer of | |
281 | * a series of sub-buffer that makes-up a coherent | |
282 | * (parseable) unit of metadata. | |
283 | */ | |
284 | LTTNG_OPTIONAL(bool) coherent; | |
6f1177cf JG |
285 | } metadata; |
286 | struct { | |
287 | unsigned long subbuf_size; | |
288 | unsigned long padded_subbuf_size; | |
289 | uint64_t packet_size; | |
290 | uint64_t content_size; | |
291 | uint64_t timestamp_begin; | |
292 | uint64_t timestamp_end; | |
293 | uint64_t events_discarded; | |
294 | /* Left unset when unsupported. */ | |
295 | LTTNG_OPTIONAL(uint64_t) sequence_number; | |
296 | uint64_t stream_id; | |
297 | /* Left unset when unsupported. */ | |
298 | LTTNG_OPTIONAL(uint64_t) stream_instance_id; | |
299 | } data; | |
300 | } info; | |
301 | }; | |
302 | ||
303 | /* | |
304 | * Perform any operation required to acknowledge | |
305 | * the wake-up of a consumer stream (e.g. consume a byte on a wake-up pipe). | |
306 | * | |
307 | * Stream and channel locks are acquired during this call. | |
308 | */ | |
309 | typedef int (*on_wake_up_cb)(struct lttng_consumer_stream *); | |
310 | ||
311 | /* | |
312 | * Perform any operation required before a consumer stream is put | |
313 | * to sleep before awaiting a data availability notification. | |
314 | * | |
315 | * Stream and channel locks are acquired during this call. | |
316 | */ | |
317 | typedef int (*on_sleep_cb)(struct lttng_consumer_stream *, | |
318 | struct lttng_consumer_local_data *); | |
319 | ||
320 | /* | |
321 | * Acquire the subbuffer at the current 'consumed' position. | |
322 | * | |
323 | * Stream and channel locks are acquired during this call. | |
324 | */ | |
325 | typedef int (*get_next_subbuffer_cb)(struct lttng_consumer_stream *, | |
326 | struct stream_subbuffer *); | |
327 | ||
328 | /* | |
329 | * Populate the stream_subbuffer's info member. The info to populate | |
330 | * depends on the type (metadata/data) of the stream. | |
331 | * | |
332 | * Stream and channel locks are acquired during this call. | |
333 | */ | |
334 | typedef int (*extract_subbuffer_info_cb)( | |
335 | struct lttng_consumer_stream *, struct stream_subbuffer *); | |
336 | ||
337 | /* | |
338 | * Invoked after a subbuffer's info has been filled. | |
339 | * | |
340 | * Stream and channel locks are acquired during this call. | |
341 | */ | |
342 | typedef int (*pre_consume_subbuffer_cb)(struct lttng_consumer_stream *, | |
343 | const struct stream_subbuffer *); | |
344 | ||
345 | /* | |
346 | * Consume subbuffer contents. | |
347 | * | |
348 | * Stream and channel locks are acquired during this call. | |
349 | */ | |
350 | typedef ssize_t (*consume_subbuffer_cb)(struct lttng_consumer_local_data *, | |
351 | struct lttng_consumer_stream *, | |
352 | const struct stream_subbuffer *); | |
353 | ||
354 | /* | |
355 | * Release the current subbuffer and advance the 'consumed' position by | |
356 | * one subbuffer. | |
357 | * | |
358 | * Stream and channel locks are acquired during this call. | |
359 | */ | |
360 | typedef int (*put_next_subbuffer_cb)(struct lttng_consumer_stream *, | |
361 | struct stream_subbuffer *); | |
362 | ||
363 | /* | |
364 | * Invoked after consuming a subbuffer. | |
365 | * | |
366 | * Stream and channel locks are acquired during this call. | |
367 | */ | |
368 | typedef int (*post_consume_cb)(struct lttng_consumer_stream *, | |
369 | const struct stream_subbuffer *, | |
370 | struct lttng_consumer_local_data *); | |
371 | ||
372 | /* | |
373 | * Send a live beacon if no data is available. | |
374 | * | |
375 | * Stream and channel locks are acquired during this call. | |
376 | */ | |
377 | typedef int (*send_live_beacon_cb)(struct lttng_consumer_stream *); | |
378 | ||
379 | /* | |
380 | * Lock the stream and channel locks and any other stream-type specific | |
381 | * lock that need to be acquired during the processing of an | |
382 | * availability notification. | |
383 | */ | |
384 | typedef void (*lock_cb)(struct lttng_consumer_stream *); | |
385 | ||
386 | /* | |
387 | * Unlock the stream and channel locks and any other stream-type specific | |
388 | * lock before sleeping until the next availability notification. | |
389 | * | |
390 | * Stream and channel locks are acquired during this call. | |
391 | */ | |
392 | typedef void (*unlock_cb)(struct lttng_consumer_stream *); | |
393 | ||
394 | /* | |
395 | * Invoked when a subbuffer's metadata version does not match the last | |
396 | * known metadata version. | |
397 | * | |
398 | * Stream and channel locks are acquired during this call. | |
399 | */ | |
400 | typedef void (*reset_metadata_cb)(struct lttng_consumer_stream *); | |
401 | ||
3bd1e081 MD |
402 | /* |
403 | * Internal representation of the streams, sessiond_key is used to identify | |
404 | * uniquely a stream. | |
405 | */ | |
406 | struct lttng_consumer_stream { | |
53632229 | 407 | /* HT node used by the data_ht and metadata_ht */ |
d88aee68 | 408 | struct lttng_ht_node_u64 node; |
d8ef542d MD |
409 | /* stream indexed per channel key node */ |
410 | struct lttng_ht_node_u64 node_channel_id; | |
53632229 | 411 | /* HT node used in consumer_data.stream_list_ht */ |
d88aee68 | 412 | struct lttng_ht_node_u64 node_session_id; |
ffe60014 DG |
413 | /* Pointer to associated channel. */ |
414 | struct lttng_consumer_channel *chan; | |
e5148e25 JG |
415 | /* |
416 | * Current trace chunk. Holds a reference to the trace chunk. | |
417 | * `chunk` can be NULL when a stream is not associated to a chunk, e.g. | |
418 | * when it was created in the context of a no-output session. | |
419 | */ | |
420 | struct lttng_trace_chunk *trace_chunk; | |
ffe60014 DG |
421 | |
422 | /* Key by which the stream is indexed for 'node'. */ | |
d88aee68 | 423 | uint64_t key; |
3bd1e081 | 424 | /* |
ffe60014 DG |
425 | * File descriptor of the data output file. This can be either a file or a |
426 | * socket fd for relayd streaming. | |
3bd1e081 | 427 | */ |
3bd1e081 | 428 | int out_fd; /* output file to write the data */ |
ffe60014 DG |
429 | /* Write position in the output file descriptor */ |
430 | off_t out_fd_offset; | |
e5d1a9b3 MD |
431 | /* Amount of bytes written to the output */ |
432 | uint64_t output_written; | |
b5c5fc29 | 433 | int shm_fd_is_copy; |
4078b776 | 434 | int data_read; |
d056b477 | 435 | int hangup_flush_done; |
c585821b | 436 | |
0dd01979 MD |
437 | /* |
438 | * Whether the stream is in a "complete" state (e.g. it does not have a | |
439 | * partially written sub-buffer. | |
440 | * | |
441 | * Initialized to "false" on stream creation (first packet is empty). | |
442 | * | |
443 | * The various transitions of the quiescent state are: | |
444 | * - On "start" tracing: set to false, since the stream is not | |
445 | * "complete". | |
446 | * - On "stop" tracing: if !quiescent -> flush FINAL (update | |
447 | * timestamp_end), and set to true; the stream has entered a | |
448 | * complete/quiescent state. | |
449 | * - On "destroy" or stream/application hang-up: if !quiescent -> | |
450 | * flush FINAL, and set to true. | |
451 | * | |
452 | * NOTE: Update and read are protected by the stream lock. | |
453 | */ | |
454 | bool quiescent; | |
455 | ||
c8eabe73 MD |
456 | /* |
457 | * True if the sequence number is not available (lttng-modules < 2.8). | |
458 | */ | |
459 | bool sequence_number_unavailable; | |
460 | ||
c585821b MD |
461 | /* |
462 | * metadata_timer_lock protects flags waiting_on_metadata and | |
463 | * missed_metadata_flush. | |
464 | */ | |
465 | pthread_mutex_t metadata_timer_lock; | |
466 | /* | |
467 | * Flag set when awaiting metadata to be pushed. Used in the | |
468 | * timer thread to skip waiting on the stream (and stream lock) to | |
469 | * ensure we can proceed to flushing metadata in live mode. | |
470 | */ | |
471 | bool waiting_on_metadata; | |
472 | /* Raised when a timer misses a metadata flush. */ | |
473 | bool missed_metadata_flush; | |
474 | ||
ffe60014 | 475 | enum lttng_event_output output; |
84a93c08 | 476 | /* Maximum subbuffer size (in bytes). */ |
ffe60014 DG |
477 | unsigned long max_sb_size; |
478 | ||
479 | /* | |
480 | * Still used by the kernel for MMAP output. For UST, the ustctl getter is | |
481 | * used for the mmap base and offset. | |
482 | */ | |
483 | void *mmap_base; | |
484 | unsigned long mmap_len; | |
485 | ||
486 | /* For UST */ | |
487 | ||
488 | int wait_fd; | |
00e2e675 | 489 | /* Network sequence number. Indicating on which relayd socket it goes. */ |
d88aee68 | 490 | uint64_t net_seq_idx; |
d01178b6 DG |
491 | /* |
492 | * Indicate if this stream was successfully sent to a relayd. This is set | |
493 | * after the refcount of the relayd is incremented and is checked when the | |
494 | * stream is closed before decrementing the refcount in order to avoid an | |
495 | * unbalanced state. | |
496 | */ | |
497 | unsigned int sent_to_relayd; | |
498 | ||
00e2e675 DG |
499 | /* Identify if the stream is the metadata */ |
500 | unsigned int metadata_flag; | |
93ec662e JD |
501 | /* |
502 | * Last known metadata version, reset the metadata file in case | |
503 | * of change. | |
504 | */ | |
505 | uint64_t metadata_version; | |
00e2e675 DG |
506 | /* Used when the stream is set for network streaming */ |
507 | uint64_t relayd_stream_id; | |
3604f373 DG |
508 | /* |
509 | * When sending a stream packet to a relayd, this number is used to track | |
510 | * the packet sent by the consumer and seen by the relayd. When sending the | |
511 | * data header to the relayd, this number is sent and if the transmission | |
512 | * was successful, it is incremented. | |
513 | * | |
514 | * Even if the full data is not fully transmitted it won't matter since | |
515 | * only two possible error can happen after that where either the relayd | |
516 | * died or a read error is detected on the stream making this value useless | |
517 | * after that. | |
518 | * | |
519 | * This value SHOULD be read/updated atomically or with the lock acquired. | |
520 | */ | |
173af62f | 521 | uint64_t next_net_seq_num; |
63281d5d | 522 | /* |
74251bb8 DG |
523 | * Lock to use the stream FDs since they are used between threads. |
524 | * | |
525 | * This is nested INSIDE the consumer_data lock. | |
a9838785 | 526 | * This is nested INSIDE the channel lock. |
ec6ea7d0 | 527 | * This is nested INSIDE the channel timer lock. |
3dad2c0f | 528 | * This is nested OUTSIDE the metadata cache lock. |
74251bb8 | 529 | * This is nested OUTSIDE consumer_relayd_sock_pair lock. |
63281d5d | 530 | */ |
53632229 DG |
531 | pthread_mutex_t lock; |
532 | /* Tracing session id */ | |
533 | uint64_t session_id; | |
8994307f DG |
534 | /* |
535 | * Indicates if the stream end point is still active or not (network | |
536 | * streaming or local file system). The thread "owning" the stream is | |
537 | * handling this status and can be notified of a state change through the | |
538 | * consumer data appropriate pipe. | |
539 | */ | |
540 | enum consumer_endpoint_status endpoint_status; | |
ffe60014 DG |
541 | /* Stream name. Format is: <channel_name>_<cpu_number> */ |
542 | char name[LTTNG_SYMBOL_NAME_LEN]; | |
543 | /* Internal state of libustctl. */ | |
544 | struct ustctl_consumer_stream *ustream; | |
545 | struct cds_list_head send_node; | |
1624d5b7 JD |
546 | /* On-disk circular buffer */ |
547 | uint64_t tracefile_size_current; | |
548 | uint64_t tracefile_count_current; | |
4891ece8 DG |
549 | /* |
550 | * Monitor or not the streams of this channel meaning this indicates if the | |
551 | * streams should be sent to the data/metadata thread or added to the no | |
552 | * monitor list of the channel. | |
553 | */ | |
554 | unsigned int monitor; | |
555 | /* | |
556 | * Indicate if the stream is globally visible meaning that it has been | |
557 | * added to the multiple hash tables. If *not* set, NO lock should be | |
558 | * acquired in the destroy path. | |
559 | */ | |
560 | unsigned int globally_visible; | |
feb78e88 MD |
561 | /* |
562 | * Pipe to wake up the metadata poll thread when the UST metadata | |
563 | * cache is updated. | |
564 | */ | |
565 | int ust_metadata_poll_pipe[2]; | |
566 | /* | |
567 | * How much metadata was read from the metadata cache and sent | |
568 | * to the channel. | |
569 | */ | |
570 | uint64_t ust_metadata_pushed; | |
fb83fe64 JD |
571 | /* |
572 | * Copy of the last discarded event value to detect the overflow of | |
573 | * the counter. | |
574 | */ | |
575 | uint64_t last_discarded_events; | |
576 | /* Copy of the sequence number of the last packet extracted. */ | |
577 | uint64_t last_sequence_number; | |
309167d2 | 578 | /* |
f8f3885c | 579 | * Index file object of the index file for this stream. |
309167d2 | 580 | */ |
f8f3885c | 581 | struct lttng_index_file *index_file; |
94d49140 | 582 | |
a2361a61 JD |
583 | /* |
584 | * Local pipe to extract data when using splice. | |
585 | */ | |
586 | int splice_pipe[2]; | |
587 | ||
94d49140 JD |
588 | /* |
589 | * Rendez-vous point between data and metadata stream in live mode. | |
590 | */ | |
591 | pthread_cond_t metadata_rdv; | |
592 | pthread_mutex_t metadata_rdv_lock; | |
02b3d176 | 593 | |
02d02e31 | 594 | /* |
c8eabe73 MD |
595 | * rotate_position represents the packet sequence number of the last |
596 | * packet which belongs to the current trace chunk prior to the rotation. | |
597 | * When that position is reached, this tracefile can be closed and a | |
598 | * new one is created in channel_read_only_attributes.path. | |
02d02e31 | 599 | */ |
c8eabe73 | 600 | uint64_t rotate_position; |
02d02e31 | 601 | |
d9a2e16e JD |
602 | /* |
603 | * Read-only copies of channel values. We cannot safely access the | |
604 | * channel from a stream, so we need to have a local copy of these | |
605 | * fields in the stream object. These fields should be removed from | |
606 | * the stream objects when we introduce refcounting. | |
607 | */ | |
608 | struct { | |
d9a2e16e JD |
609 | uint64_t tracefile_size; |
610 | } channel_read_only_attributes; | |
611 | ||
02d02e31 JD |
612 | /* |
613 | * Flag to inform the data or metadata thread that a stream is | |
614 | * ready to be rotated. | |
615 | */ | |
616 | bool rotate_ready; | |
617 | ||
02b3d176 DG |
618 | /* Indicate if the stream still has some data to be read. */ |
619 | unsigned int has_data:1; | |
93ec662e JD |
620 | /* |
621 | * Inform the consumer or relay to reset the metadata | |
622 | * file before writing in it (regeneration). | |
623 | */ | |
624 | unsigned int reset_metadata_flag:1; | |
6f1177cf JG |
625 | struct { |
626 | /* | |
627 | * Invoked in the order of declaration. | |
628 | * See callback type definitions. | |
629 | */ | |
630 | lock_cb lock; | |
631 | on_wake_up_cb on_wake_up; | |
632 | get_next_subbuffer_cb get_next_subbuffer; | |
633 | extract_subbuffer_info_cb extract_subbuffer_info; | |
634 | pre_consume_subbuffer_cb pre_consume_subbuffer; | |
635 | reset_metadata_cb reset_metadata; | |
636 | consume_subbuffer_cb consume_subbuffer; | |
637 | put_next_subbuffer_cb put_next_subbuffer; | |
638 | post_consume_cb post_consume; | |
639 | send_live_beacon_cb send_live_beacon; | |
640 | on_sleep_cb on_sleep; | |
641 | unlock_cb unlock; | |
642 | } read_subbuffer_ops; | |
8d18bcae | 643 | struct metadata_bucket *metadata_bucket; |
00e2e675 DG |
644 | }; |
645 | ||
646 | /* | |
647 | * Internal representation of a relayd socket pair. | |
648 | */ | |
649 | struct consumer_relayd_sock_pair { | |
650 | /* Network sequence number. */ | |
da009f2c | 651 | uint64_t net_seq_idx; |
00e2e675 | 652 | /* Number of stream associated with this relayd */ |
97056403 | 653 | int refcount; |
173af62f DG |
654 | |
655 | /* | |
656 | * This flag indicates whether or not we should destroy this object. The | |
657 | * destruction should ONLY occurs when this flag is set and the refcount is | |
658 | * set to zero. | |
659 | */ | |
660 | unsigned int destroy_flag; | |
661 | ||
51d7db73 DG |
662 | /* |
663 | * Mutex protecting the control socket to avoid out of order packets | |
664 | * between threads sending data to the relayd. Since metadata data is sent | |
665 | * over that socket, at least two sendmsg() are needed (header + data) | |
666 | * creating a race for packets to overlap between threads using it. | |
74251bb8 DG |
667 | * |
668 | * This is nested INSIDE the consumer_data lock. | |
669 | * This is nested INSIDE the stream lock. | |
51d7db73 | 670 | */ |
00e2e675 | 671 | pthread_mutex_t ctrl_sock_mutex; |
51d7db73 DG |
672 | |
673 | /* Control socket. Command and metadata are passed over it */ | |
6151a90f | 674 | struct lttcomm_relayd_sock control_sock; |
51d7db73 DG |
675 | |
676 | /* | |
677 | * We don't need a mutex at this point since we only splice or write single | |
678 | * large chunk of data with a header appended at the begining. Moreover, | |
679 | * this socket is for now only used in a single thread. | |
680 | */ | |
6151a90f | 681 | struct lttcomm_relayd_sock data_sock; |
d88aee68 | 682 | struct lttng_ht_node_u64 node; |
c5b6f4f0 | 683 | |
f7079f67 DG |
684 | /* Session id on both sides for the sockets. */ |
685 | uint64_t relayd_session_id; | |
686 | uint64_t sessiond_session_id; | |
11413bb9 | 687 | struct lttng_consumer_local_data *ctx; |
3bd1e081 MD |
688 | }; |
689 | ||
690 | /* | |
691 | * UST consumer local data to the program. One or more instance per | |
692 | * process. | |
693 | */ | |
694 | struct lttng_consumer_local_data { | |
4078b776 MD |
695 | /* |
696 | * Function to call when data is available on a buffer. | |
697 | * Returns the number of bytes read, or negative error value. | |
698 | */ | |
699 | ssize_t (*on_buffer_ready)(struct lttng_consumer_stream *stream, | |
6f1177cf JG |
700 | struct lttng_consumer_local_data *ctx, |
701 | bool locked_by_caller); | |
3bd1e081 MD |
702 | /* |
703 | * function to call when we receive a new channel, it receives a | |
704 | * newly allocated channel, depending on the return code of this | |
705 | * function, the new channel will be handled by the application | |
706 | * or the library. | |
707 | * | |
708 | * Returns: | |
709 | * > 0 (success, FD is kept by application) | |
710 | * == 0 (success, FD is left to library) | |
711 | * < 0 (error) | |
712 | */ | |
713 | int (*on_recv_channel)(struct lttng_consumer_channel *channel); | |
714 | /* | |
715 | * function to call when we receive a new stream, it receives a | |
716 | * newly allocated stream, depending on the return code of this | |
717 | * function, the new stream will be handled by the application | |
718 | * or the library. | |
719 | * | |
720 | * Returns: | |
721 | * > 0 (success, FD is kept by application) | |
722 | * == 0 (success, FD is left to library) | |
723 | * < 0 (error) | |
724 | */ | |
725 | int (*on_recv_stream)(struct lttng_consumer_stream *stream); | |
726 | /* | |
727 | * function to call when a stream is getting updated by the session | |
728 | * daemon, this function receives the sessiond key and the new | |
729 | * state, depending on the return code of this function the | |
730 | * update of state for the stream is handled by the application | |
731 | * or the library. | |
732 | * | |
733 | * Returns: | |
734 | * > 0 (success, FD is kept by application) | |
735 | * == 0 (success, FD is left to library) | |
736 | * < 0 (error) | |
737 | */ | |
30319bcb | 738 | int (*on_update_stream)(uint64_t sessiond_key, uint32_t state); |
331744e3 | 739 | enum lttng_consumer_type type; |
3bd1e081 MD |
740 | /* socket to communicate errors with sessiond */ |
741 | int consumer_error_socket; | |
75d83e50 | 742 | /* socket to ask metadata to sessiond. */ |
331744e3 | 743 | int consumer_metadata_socket; |
ace17efa MD |
744 | /* |
745 | * Protect consumer_metadata_socket. | |
746 | * | |
747 | * This is nested OUTSIDE the metadata cache lock. | |
748 | */ | |
75d83e50 | 749 | pthread_mutex_t metadata_socket_lock; |
3bd1e081 MD |
750 | /* socket to exchange commands with sessiond */ |
751 | char *consumer_command_sock_path; | |
752 | /* communication with splice */ | |
d8ef542d | 753 | int consumer_channel_pipe[2]; |
50f8ae69 | 754 | /* Data stream poll thread pipe. To transfer data stream to the thread */ |
acdb9057 | 755 | struct lttng_pipe *consumer_data_pipe; |
02b3d176 DG |
756 | |
757 | /* | |
758 | * Data thread use that pipe to catch wakeup from read subbuffer that | |
759 | * detects that there is still data to be read for the stream encountered. | |
760 | * Before doing so, the stream is flagged to indicate that there is still | |
761 | * data to be read. | |
762 | * | |
763 | * Both pipes (read/write) are owned and used inside the data thread. | |
764 | */ | |
765 | struct lttng_pipe *consumer_wakeup_pipe; | |
766 | /* Indicate if the wakeup thread has been notified. */ | |
767 | unsigned int has_wakeup:1; | |
768 | ||
3bd1e081 MD |
769 | /* to let the signal handler wake up the fd receiver thread */ |
770 | int consumer_should_quit[2]; | |
fb3a43a9 | 771 | /* Metadata poll thread pipe. Transfer metadata stream to it */ |
13886d2d | 772 | struct lttng_pipe *consumer_metadata_pipe; |
b3530820 JG |
773 | /* |
774 | * Pipe used by the channel monitoring timers to provide state samples | |
775 | * to the session daemon (write-only). | |
776 | */ | |
777 | int channel_monitor_pipe; | |
fc181d72 | 778 | LTTNG_OPTIONAL(lttng_uuid) sessiond_uuid; |
3bd1e081 MD |
779 | }; |
780 | ||
781 | /* | |
782 | * Library-level data. One instance per process. | |
783 | */ | |
784 | struct lttng_consumer_global_data { | |
785 | /* | |
e4421fec DG |
786 | * At this time, this lock is used to ensure coherence between the count |
787 | * and number of element in the hash table. It's also a protection for | |
6065ceec DG |
788 | * concurrent read/write between threads. |
789 | * | |
74251bb8 DG |
790 | * This is nested OUTSIDE the stream lock. |
791 | * This is nested OUTSIDE the consumer_relayd_sock_pair lock. | |
3bd1e081 MD |
792 | */ |
793 | pthread_mutex_t lock; | |
e4421fec | 794 | |
3bd1e081 | 795 | /* |
3cc2f24a DG |
796 | * Number of streams in the data stream hash table declared outside. |
797 | * Protected by consumer_data.lock. | |
3bd1e081 MD |
798 | */ |
799 | int stream_count; | |
3cc2f24a DG |
800 | |
801 | /* Channel hash table protected by consumer_data.lock. */ | |
e4421fec | 802 | struct lttng_ht *channel_ht; |
0fc67d9b JG |
803 | /* Channel hash table indexed by session id. */ |
804 | struct lttng_ht *channels_by_session_id_ht; | |
3bd1e081 MD |
805 | /* |
806 | * Flag specifying if the local array of FDs needs update in the | |
807 | * poll function. Protected by consumer_data.lock. | |
808 | */ | |
809 | unsigned int need_update; | |
810 | enum lttng_consumer_type type; | |
00e2e675 DG |
811 | |
812 | /* | |
813 | * Relayd socket(s) hashtable indexed by network sequence number. Each | |
814 | * stream has an index which associate the right relayd socket to use. | |
815 | */ | |
816 | struct lttng_ht *relayd_ht; | |
53632229 DG |
817 | |
818 | /* | |
819 | * This hash table contains all streams (metadata and data) indexed by | |
820 | * session id. In other words, the ht is indexed by session id and each | |
821 | * bucket contains the list of associated streams. | |
822 | * | |
823 | * This HT uses the "node_session_id" of the consumer stream. | |
824 | */ | |
825 | struct lttng_ht *stream_list_ht; | |
d8ef542d MD |
826 | |
827 | /* | |
828 | * This HT uses the "node_channel_id" of the consumer stream. | |
829 | */ | |
830 | struct lttng_ht *stream_per_chan_id_ht; | |
a335e585 JG |
831 | |
832 | /* | |
833 | * Trace chunk registry indexed by (session_id, chunk_id). | |
834 | */ | |
835 | struct lttng_trace_chunk_registry *chunk_registry; | |
3bd1e081 MD |
836 | }; |
837 | ||
10211f5c MD |
838 | /* |
839 | * Set to nonzero when the consumer is exiting. Updated by signal | |
840 | * handler and thread exit, read by threads. | |
841 | */ | |
842 | extern int consumer_quit; | |
843 | ||
13675d0e MD |
844 | /* |
845 | * Set to nonzero when the consumer is exiting. Updated by signal | |
846 | * handler and thread exit, read by threads. | |
847 | */ | |
848 | extern int consumer_quit; | |
849 | ||
cf0bcb51 JG |
850 | /* Flag used to temporarily pause data consumption from testpoints. */ |
851 | extern int data_consumption_paused; | |
852 | ||
82528808 JG |
853 | /* Return a human-readable consumer type string that is suitable for logging. */ |
854 | static inline | |
855 | const char *lttng_consumer_type_str(enum lttng_consumer_type type) | |
856 | { | |
857 | switch (type) { | |
858 | case LTTNG_CONSUMER_UNKNOWN: | |
859 | return "unknown"; | |
860 | case LTTNG_CONSUMER_KERNEL: | |
861 | return "kernel"; | |
862 | case LTTNG_CONSUMER32_UST: | |
863 | return "32-bit user space"; | |
864 | case LTTNG_CONSUMER64_UST: | |
865 | return "64-bit user space"; | |
866 | default: | |
867 | abort(); | |
868 | } | |
869 | } | |
870 | ||
e4421fec DG |
871 | /* |
872 | * Init consumer data structures. | |
873 | */ | |
282dadbc | 874 | int lttng_consumer_init(void); |
e4421fec | 875 | |
3bd1e081 MD |
876 | /* |
877 | * Set the error socket for communication with a session daemon. | |
878 | */ | |
ffe60014 DG |
879 | void lttng_consumer_set_error_sock(struct lttng_consumer_local_data *ctx, |
880 | int sock); | |
3bd1e081 MD |
881 | |
882 | /* | |
883 | * Set the command socket path for communication with a session daemon. | |
884 | */ | |
ffe60014 | 885 | void lttng_consumer_set_command_sock_path( |
3bd1e081 MD |
886 | struct lttng_consumer_local_data *ctx, char *sock); |
887 | ||
888 | /* | |
889 | * Send return code to session daemon. | |
890 | * | |
891 | * Returns the return code of sendmsg : the number of bytes transmitted or -1 | |
892 | * on error. | |
893 | */ | |
ffe60014 | 894 | int lttng_consumer_send_error(struct lttng_consumer_local_data *ctx, int cmd); |
3bd1e081 MD |
895 | |
896 | /* | |
897 | * Called from signal handler to ensure a clean exit. | |
898 | */ | |
ffe60014 | 899 | void lttng_consumer_should_exit(struct lttng_consumer_local_data *ctx); |
3bd1e081 MD |
900 | |
901 | /* | |
902 | * Cleanup the daemon's socket on exit. | |
903 | */ | |
ffe60014 | 904 | void lttng_consumer_cleanup(void); |
3bd1e081 | 905 | |
3bd1e081 MD |
906 | /* |
907 | * Poll on the should_quit pipe and the command socket return -1 on error and | |
908 | * should exit, 0 if data is available on the command socket | |
909 | */ | |
ffe60014 | 910 | int lttng_consumer_poll_socket(struct pollfd *kconsumer_sockpoll); |
3bd1e081 | 911 | |
d9a2e16e JD |
912 | /* |
913 | * Copy the fields from the channel that need to be accessed (read-only) | |
914 | * directly from the stream. | |
915 | */ | |
916 | void consumer_stream_update_channel_attributes( | |
917 | struct lttng_consumer_stream *stream, | |
918 | struct lttng_consumer_channel *channel); | |
919 | ||
c0c85e4f JG |
920 | struct lttng_consumer_stream *consumer_allocate_stream( |
921 | struct lttng_consumer_channel *channel, | |
922 | uint64_t channel_key, | |
d88aee68 | 923 | uint64_t stream_key, |
ffe60014 | 924 | const char *channel_name, |
57a269f2 | 925 | uint64_t relayd_id, |
53632229 | 926 | uint64_t session_id, |
e5148e25 | 927 | struct lttng_trace_chunk *trace_chunk, |
ffe60014 DG |
928 | int cpu, |
929 | int *alloc_ret, | |
4891ece8 | 930 | enum consumer_channel_type type, |
e5148e25 | 931 | unsigned int monitor); |
d88aee68 | 932 | struct lttng_consumer_channel *consumer_allocate_channel(uint64_t key, |
ffe60014 | 933 | uint64_t session_id, |
e5148e25 | 934 | const uint64_t *chunk_id, |
ffe60014 DG |
935 | const char *pathname, |
936 | const char *name, | |
57a269f2 | 937 | uint64_t relayd_id, |
1624d5b7 JD |
938 | enum lttng_event_output output, |
939 | uint64_t tracefile_size, | |
2bba9e53 | 940 | uint64_t tracefile_count, |
1950109e | 941 | uint64_t session_id_per_pid, |
ecc48a90 | 942 | unsigned int monitor, |
d7ba1388 | 943 | unsigned int live_timer_interval, |
3ef395a9 | 944 | bool is_in_live_session, |
3d071855 | 945 | const char *root_shm_path, |
d7ba1388 | 946 | const char *shm_path); |
ffe60014 | 947 | void consumer_del_stream(struct lttng_consumer_stream *stream, |
e316aad5 | 948 | struct lttng_ht *ht); |
ffe60014 | 949 | void consumer_del_metadata_stream(struct lttng_consumer_stream *stream, |
e316aad5 | 950 | struct lttng_ht *ht); |
d8ef542d MD |
951 | int consumer_add_channel(struct lttng_consumer_channel *channel, |
952 | struct lttng_consumer_local_data *ctx); | |
ffe60014 | 953 | void consumer_del_channel(struct lttng_consumer_channel *channel); |
3bd1e081 | 954 | |
00e2e675 | 955 | /* lttng-relayd consumer command */ |
d88aee68 | 956 | struct consumer_relayd_sock_pair *consumer_find_relayd(uint64_t key); |
10a50311 | 957 | int consumer_send_relayd_stream(struct lttng_consumer_stream *stream, char *path); |
a4baae1b | 958 | int consumer_send_relayd_streams_sent(uint64_t net_seq_idx); |
10a50311 | 959 | void close_relayd_stream(struct lttng_consumer_stream *stream); |
d88aee68 | 960 | struct lttng_consumer_channel *consumer_find_channel(uint64_t key); |
00e2e675 DG |
961 | int consumer_handle_stream_before_relayd(struct lttng_consumer_stream *stream, |
962 | size_t data_size); | |
c869f647 | 963 | void consumer_steal_stream_key(int key, struct lttng_ht *ht); |
00e2e675 | 964 | |
ffe60014 | 965 | struct lttng_consumer_local_data *lttng_consumer_create( |
3bd1e081 | 966 | enum lttng_consumer_type type, |
4078b776 | 967 | ssize_t (*buffer_ready)(struct lttng_consumer_stream *stream, |
6f1177cf JG |
968 | struct lttng_consumer_local_data *ctx, |
969 | bool locked_by_caller), | |
3bd1e081 MD |
970 | int (*recv_channel)(struct lttng_consumer_channel *channel), |
971 | int (*recv_stream)(struct lttng_consumer_stream *stream), | |
30319bcb | 972 | int (*update_stream)(uint64_t sessiond_key, uint32_t state)); |
ffe60014 DG |
973 | void lttng_consumer_destroy(struct lttng_consumer_local_data *ctx); |
974 | ssize_t lttng_consumer_on_read_subbuffer_mmap( | |
7775df52 | 975 | struct lttng_consumer_stream *stream, |
b770aa7f | 976 | const struct lttng_buffer_view *buffer, |
6f1177cf | 977 | unsigned long padding); |
ffe60014 | 978 | ssize_t lttng_consumer_on_read_subbuffer_splice( |
3bd1e081 | 979 | struct lttng_consumer_local_data *ctx, |
1d4dfdef | 980 | struct lttng_consumer_stream *stream, unsigned long len, |
6f1177cf | 981 | unsigned long padding); |
15055ce5 | 982 | int lttng_consumer_sample_snapshot_positions(struct lttng_consumer_stream *stream); |
ffe60014 DG |
983 | int lttng_consumer_take_snapshot(struct lttng_consumer_stream *stream); |
984 | int lttng_consumer_get_produced_snapshot(struct lttng_consumer_stream *stream, | |
3bd1e081 | 985 | unsigned long *pos); |
15055ce5 JD |
986 | int lttng_consumer_get_consumed_snapshot(struct lttng_consumer_stream *stream, |
987 | unsigned long *pos); | |
6d574024 DG |
988 | int lttng_ustconsumer_get_wakeup_fd(struct lttng_consumer_stream *stream); |
989 | int lttng_ustconsumer_close_wakeup_fd(struct lttng_consumer_stream *stream); | |
ffe60014 DG |
990 | void *consumer_thread_metadata_poll(void *data); |
991 | void *consumer_thread_data_poll(void *data); | |
992 | void *consumer_thread_sessiond_poll(void *data); | |
d8ef542d | 993 | void *consumer_thread_channel_poll(void *data); |
ffe60014 | 994 | int lttng_consumer_recv_cmd(struct lttng_consumer_local_data *ctx, |
3bd1e081 MD |
995 | int sock, struct pollfd *consumer_sockpoll); |
996 | ||
4078b776 | 997 | ssize_t lttng_consumer_read_subbuffer(struct lttng_consumer_stream *stream, |
6f1177cf JG |
998 | struct lttng_consumer_local_data *ctx, |
999 | bool locked_by_caller); | |
d41f73b7 | 1000 | int lttng_consumer_on_recv_stream(struct lttng_consumer_stream *stream); |
2527bf85 | 1001 | void consumer_add_relayd_socket(uint64_t net_seq_idx, int sock_type, |
7735ef9e | 1002 | struct lttng_consumer_local_data *ctx, int sock, |
6151a90f | 1003 | struct pollfd *consumer_sockpoll, struct lttcomm_relayd_sock *relayd_sock, |
d3e2ba59 | 1004 | uint64_t sessiond_id, uint64_t relayd_session_id); |
a6ba4fe1 DG |
1005 | void consumer_flag_relayd_for_destroy( |
1006 | struct consumer_relayd_sock_pair *relayd); | |
6d805429 | 1007 | int consumer_data_pending(uint64_t id); |
f50f23d9 | 1008 | int consumer_send_status_msg(int sock, int ret_code); |
ffe60014 DG |
1009 | int consumer_send_status_channel(int sock, |
1010 | struct lttng_consumer_channel *channel); | |
a0cbdd2e MD |
1011 | void notify_thread_del_channel(struct lttng_consumer_local_data *ctx, |
1012 | uint64_t key); | |
51230d70 | 1013 | void consumer_destroy_relayd(struct consumer_relayd_sock_pair *relayd); |
d07ceecd MD |
1014 | unsigned long consumer_get_consume_start_pos(unsigned long consumed_pos, |
1015 | unsigned long produced_pos, uint64_t nb_packets_per_stream, | |
1016 | uint64_t max_sb_size); | |
66d583dc | 1017 | void consumer_add_data_stream(struct lttng_consumer_stream *stream); |
5ab66908 | 1018 | void consumer_del_stream_for_data(struct lttng_consumer_stream *stream); |
66d583dc | 1019 | void consumer_add_metadata_stream(struct lttng_consumer_stream *stream); |
5ab66908 | 1020 | void consumer_del_stream_for_metadata(struct lttng_consumer_stream *stream); |
309167d2 | 1021 | int consumer_create_index_file(struct lttng_consumer_stream *stream); |
e96d66b4 | 1022 | int lttng_consumer_rotate_channel(struct lttng_consumer_channel *channel, |
e5148e25 | 1023 | uint64_t key, uint64_t relayd_id, uint32_t metadata, |
e96d66b4 | 1024 | struct lttng_consumer_local_data *ctx); |
02d02e31 | 1025 | int lttng_consumer_stream_is_rotate_ready(struct lttng_consumer_stream *stream); |
d73bf3d7 | 1026 | int lttng_consumer_rotate_stream(struct lttng_consumer_local_data *ctx, |
e5148e25 | 1027 | struct lttng_consumer_stream *stream); |
e96d66b4 MD |
1028 | int lttng_consumer_rotate_ready_streams(struct lttng_consumer_channel *channel, |
1029 | uint64_t key, struct lttng_consumer_local_data *ctx); | |
d73bf3d7 | 1030 | void lttng_consumer_reset_stream_rotate_state(struct lttng_consumer_stream *stream); |
e5148e25 JG |
1031 | enum lttcomm_return_code lttng_consumer_create_trace_chunk( |
1032 | const uint64_t *relayd_id, uint64_t session_id, | |
1033 | uint64_t chunk_id, | |
1034 | time_t chunk_creation_timestamp, | |
1035 | const char *chunk_override_name, | |
1036 | const struct lttng_credentials *credentials, | |
1037 | struct lttng_directory_handle *chunk_directory_handle); | |
1038 | enum lttcomm_return_code lttng_consumer_close_trace_chunk( | |
1039 | const uint64_t *relayd_id, uint64_t session_id, | |
6bbcff33 | 1040 | uint64_t chunk_id, time_t chunk_close_timestamp, |
41b23598 MD |
1041 | const enum lttng_trace_chunk_command_type *close_command, |
1042 | char *path); | |
e5148e25 JG |
1043 | enum lttcomm_return_code lttng_consumer_trace_chunk_exists( |
1044 | const uint64_t *relayd_id, uint64_t session_id, | |
1045 | uint64_t chunk_id); | |
11413bb9 | 1046 | void lttng_consumer_cleanup_relayd(struct consumer_relayd_sock_pair *relayd); |
fc181d72 JG |
1047 | enum lttcomm_return_code lttng_consumer_init_command( |
1048 | struct lttng_consumer_local_data *ctx, | |
1049 | const lttng_uuid sessiond_uuid); | |
d41f73b7 | 1050 | |
f02e1e8a | 1051 | #endif /* LIB_CONSUMER_H */ |