Commit | Line | Data |
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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> | |
3bd1e081 | 5 | * |
d14d33bf AM |
6 | * This program is free software; you can redistribute it and/or modify |
7 | * it under the terms of the GNU General Public License, version 2 only, | |
8 | * as published by the Free Software Foundation. | |
3bd1e081 | 9 | * |
d14d33bf AM |
10 | * This program is distributed in the hope that it will be useful, but WITHOUT |
11 | * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or | |
12 | * FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License for | |
13 | * more details. | |
3bd1e081 | 14 | * |
d14d33bf AM |
15 | * You should have received a copy of the GNU General Public License along |
16 | * with this program; if not, write to the Free Software Foundation, Inc., | |
17 | * 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA. | |
3bd1e081 MD |
18 | */ |
19 | ||
f02e1e8a DG |
20 | #ifndef LIB_CONSUMER_H |
21 | #define LIB_CONSUMER_H | |
3bd1e081 MD |
22 | |
23 | #include <limits.h> | |
24 | #include <poll.h> | |
6df2e2c9 | 25 | #include <unistd.h> |
ffe60014 | 26 | #include <urcu/list.h> |
e4421fec | 27 | |
3bd1e081 | 28 | #include <lttng/lttng.h> |
10a8a223 | 29 | |
b9182dd9 DG |
30 | #include <common/hashtable/hashtable.h> |
31 | #include <common/compat/fcntl.h> | |
ffe60014 | 32 | #include <common/compat/uuid.h> |
00e2e675 | 33 | #include <common/sessiond-comm/sessiond-comm.h> |
acdb9057 | 34 | #include <common/pipe.h> |
3bd1e081 | 35 | |
3bd1e081 MD |
36 | /* Commands for consumer */ |
37 | enum lttng_consumer_command { | |
38 | LTTNG_CONSUMER_ADD_CHANNEL, | |
39 | LTTNG_CONSUMER_ADD_STREAM, | |
40 | /* pause, delete, active depending on fd state */ | |
41 | LTTNG_CONSUMER_UPDATE_STREAM, | |
42 | /* inform the consumer to quit when all fd has hang up */ | |
43 | LTTNG_CONSUMER_STOP, | |
00e2e675 | 44 | LTTNG_CONSUMER_ADD_RELAYD_SOCKET, |
173af62f DG |
45 | /* Inform the consumer to kill a specific relayd connection */ |
46 | LTTNG_CONSUMER_DESTROY_RELAYD, | |
53632229 | 47 | /* Return to the sessiond if there is data pending for a session */ |
6d805429 | 48 | LTTNG_CONSUMER_DATA_PENDING, |
ffe60014 DG |
49 | /* Consumer creates a channel and returns it to sessiond. */ |
50 | LTTNG_CONSUMER_ASK_CHANNEL_CREATION, | |
51 | LTTNG_CONSUMER_GET_CHANNEL, | |
52 | LTTNG_CONSUMER_DESTROY_CHANNEL, | |
d88aee68 DG |
53 | LTTNG_CONSUMER_PUSH_METADATA, |
54 | LTTNG_CONSUMER_CLOSE_METADATA, | |
55 | LTTNG_CONSUMER_SETUP_METADATA, | |
7972aab2 | 56 | LTTNG_CONSUMER_FLUSH_CHANNEL, |
3bd1e081 MD |
57 | }; |
58 | ||
59 | /* State of each fd in consumer */ | |
60 | enum lttng_consumer_stream_state { | |
61 | LTTNG_CONSUMER_ACTIVE_STREAM, | |
62 | LTTNG_CONSUMER_PAUSE_STREAM, | |
63 | LTTNG_CONSUMER_DELETE_STREAM, | |
64 | }; | |
65 | ||
3bd1e081 MD |
66 | enum lttng_consumer_type { |
67 | LTTNG_CONSUMER_UNKNOWN = 0, | |
68 | LTTNG_CONSUMER_KERNEL, | |
7753dea8 MD |
69 | LTTNG_CONSUMER64_UST, |
70 | LTTNG_CONSUMER32_UST, | |
3bd1e081 MD |
71 | }; |
72 | ||
8994307f DG |
73 | enum consumer_endpoint_status { |
74 | CONSUMER_ENDPOINT_ACTIVE, | |
75 | CONSUMER_ENDPOINT_INACTIVE, | |
76 | }; | |
77 | ||
ffe60014 DG |
78 | enum consumer_channel_output { |
79 | CONSUMER_CHANNEL_MMAP = 0, | |
80 | CONSUMER_CHANNEL_SPLICE = 1, | |
81 | }; | |
82 | ||
83 | enum consumer_channel_type { | |
84 | CONSUMER_CHANNEL_TYPE_METADATA = 0, | |
d88aee68 | 85 | CONSUMER_CHANNEL_TYPE_DATA = 1, |
ffe60014 DG |
86 | }; |
87 | ||
88 | struct stream_list { | |
89 | struct cds_list_head head; | |
90 | unsigned int count; | |
91 | }; | |
92 | ||
331744e3 JD |
93 | /* Stub. */ |
94 | struct consumer_metadata_cache; | |
95 | ||
3bd1e081 | 96 | struct lttng_consumer_channel { |
ffe60014 | 97 | /* HT node used for consumer_data.channel_ht */ |
d88aee68 | 98 | struct lttng_ht_node_u64 node; |
ffe60014 | 99 | /* Indexed key. Incremented value in the consumer. */ |
d88aee68 | 100 | uint64_t key; |
ffe60014 DG |
101 | /* Number of streams referencing this channel */ |
102 | int refcount; | |
103 | /* Tracing session id on the session daemon side. */ | |
104 | uint64_t session_id; | |
cb7c6909 JD |
105 | /* |
106 | * Session id when requesting metadata to the session daemon for | |
107 | * a session with per-PID buffers. | |
108 | */ | |
109 | uint64_t session_id_per_pid; | |
ffe60014 DG |
110 | /* Channel trace file path name. */ |
111 | char pathname[PATH_MAX]; | |
112 | /* Channel name. */ | |
113 | char name[LTTNG_SYMBOL_NAME_LEN]; | |
114 | /* UID and GID of the channel. */ | |
115 | uid_t uid; | |
116 | gid_t gid; | |
98cf381a MD |
117 | /* Relayd id of the channel. -1ULL if it does not apply. */ |
118 | uint64_t relayd_id; | |
c30aaa51 | 119 | /* |
ffe60014 DG |
120 | * Number of streams NOT initialized yet. This is used in order to not |
121 | * delete this channel if streams are getting initialized. | |
c30aaa51 | 122 | */ |
ffe60014 DG |
123 | unsigned int nb_init_stream_left; |
124 | /* Output type (mmap or splice). */ | |
125 | enum consumer_channel_output output; | |
126 | /* Channel type for stream */ | |
127 | enum consumer_channel_type type; | |
c30aaa51 | 128 | |
3bd1e081 | 129 | /* For UST */ |
ffe60014 DG |
130 | struct ustctl_consumer_channel *uchan; |
131 | unsigned char uuid[UUID_STR_LEN]; | |
132 | /* | |
133 | * Temporary stream list used to store the streams once created and waiting | |
134 | * to be sent to the session daemon by receiving the | |
135 | * LTTNG_CONSUMER_GET_CHANNEL. | |
136 | */ | |
137 | struct stream_list streams; | |
d88aee68 DG |
138 | /* |
139 | * Set if the channel is metadata. We keep a reference to the stream | |
140 | * because we have to flush data once pushed by the session daemon. For a | |
141 | * regular channel, this is always set to NULL. | |
142 | */ | |
143 | struct lttng_consumer_stream *metadata_stream; | |
d8ef542d MD |
144 | |
145 | /* for UST */ | |
146 | int wait_fd; | |
147 | /* Node within channel thread ht */ | |
148 | struct lttng_ht_node_u64 wait_fd_node; | |
331744e3 JD |
149 | |
150 | /* Metadata cache is metadata channel */ | |
151 | struct consumer_metadata_cache *metadata_cache; | |
152 | /* For metadata periodical flush */ | |
153 | int switch_timer_enabled; | |
154 | timer_t switch_timer; | |
4419b4fb MD |
155 | int switch_timer_error; |
156 | ||
1624d5b7 JD |
157 | /* On-disk circular buffer */ |
158 | uint64_t tracefile_size; | |
159 | uint64_t tracefile_count; | |
3bd1e081 MD |
160 | }; |
161 | ||
3bd1e081 MD |
162 | /* |
163 | * Internal representation of the streams, sessiond_key is used to identify | |
164 | * uniquely a stream. | |
165 | */ | |
166 | struct lttng_consumer_stream { | |
53632229 | 167 | /* HT node used by the data_ht and metadata_ht */ |
d88aee68 | 168 | struct lttng_ht_node_u64 node; |
d8ef542d MD |
169 | /* stream indexed per channel key node */ |
170 | struct lttng_ht_node_u64 node_channel_id; | |
53632229 | 171 | /* HT node used in consumer_data.stream_list_ht */ |
d88aee68 | 172 | struct lttng_ht_node_u64 node_session_id; |
ffe60014 DG |
173 | /* Pointer to associated channel. */ |
174 | struct lttng_consumer_channel *chan; | |
175 | ||
176 | /* Key by which the stream is indexed for 'node'. */ | |
d88aee68 | 177 | uint64_t key; |
3bd1e081 | 178 | /* |
ffe60014 DG |
179 | * File descriptor of the data output file. This can be either a file or a |
180 | * socket fd for relayd streaming. | |
3bd1e081 | 181 | */ |
3bd1e081 | 182 | int out_fd; /* output file to write the data */ |
ffe60014 DG |
183 | /* Write position in the output file descriptor */ |
184 | off_t out_fd_offset; | |
3bd1e081 | 185 | enum lttng_consumer_stream_state state; |
b5c5fc29 | 186 | int shm_fd_is_copy; |
4078b776 | 187 | int data_read; |
d056b477 | 188 | int hangup_flush_done; |
ffe60014 DG |
189 | enum lttng_event_output output; |
190 | /* Maximum subbuffer size. */ | |
191 | unsigned long max_sb_size; | |
192 | ||
193 | /* | |
194 | * Still used by the kernel for MMAP output. For UST, the ustctl getter is | |
195 | * used for the mmap base and offset. | |
196 | */ | |
197 | void *mmap_base; | |
198 | unsigned long mmap_len; | |
199 | ||
200 | /* For UST */ | |
201 | ||
202 | int wait_fd; | |
6df2e2c9 MD |
203 | /* UID/GID of the user owning the session to which stream belongs */ |
204 | uid_t uid; | |
205 | gid_t gid; | |
00e2e675 | 206 | /* Network sequence number. Indicating on which relayd socket it goes. */ |
d88aee68 | 207 | uint64_t net_seq_idx; |
00e2e675 DG |
208 | /* Identify if the stream is the metadata */ |
209 | unsigned int metadata_flag; | |
210 | /* Used when the stream is set for network streaming */ | |
211 | uint64_t relayd_stream_id; | |
3604f373 DG |
212 | /* |
213 | * When sending a stream packet to a relayd, this number is used to track | |
214 | * the packet sent by the consumer and seen by the relayd. When sending the | |
215 | * data header to the relayd, this number is sent and if the transmission | |
216 | * was successful, it is incremented. | |
217 | * | |
218 | * Even if the full data is not fully transmitted it won't matter since | |
219 | * only two possible error can happen after that where either the relayd | |
220 | * died or a read error is detected on the stream making this value useless | |
221 | * after that. | |
222 | * | |
223 | * This value SHOULD be read/updated atomically or with the lock acquired. | |
224 | */ | |
173af62f | 225 | uint64_t next_net_seq_num; |
63281d5d | 226 | /* |
74251bb8 DG |
227 | * Lock to use the stream FDs since they are used between threads. |
228 | * | |
229 | * This is nested INSIDE the consumer_data lock. | |
73811ecc | 230 | * This is nested INSIDE the metadata cache lock. |
74251bb8 | 231 | * This is nested OUTSIDE consumer_relayd_sock_pair lock. |
63281d5d | 232 | */ |
53632229 DG |
233 | pthread_mutex_t lock; |
234 | /* Tracing session id */ | |
235 | uint64_t session_id; | |
8994307f DG |
236 | /* |
237 | * Indicates if the stream end point is still active or not (network | |
238 | * streaming or local file system). The thread "owning" the stream is | |
239 | * handling this status and can be notified of a state change through the | |
240 | * consumer data appropriate pipe. | |
241 | */ | |
242 | enum consumer_endpoint_status endpoint_status; | |
ffe60014 DG |
243 | /* Stream name. Format is: <channel_name>_<cpu_number> */ |
244 | char name[LTTNG_SYMBOL_NAME_LEN]; | |
245 | /* Internal state of libustctl. */ | |
246 | struct ustctl_consumer_stream *ustream; | |
247 | struct cds_list_head send_node; | |
1624d5b7 JD |
248 | /* On-disk circular buffer */ |
249 | uint64_t tracefile_size_current; | |
250 | uint64_t tracefile_count_current; | |
00e2e675 DG |
251 | }; |
252 | ||
253 | /* | |
254 | * Internal representation of a relayd socket pair. | |
255 | */ | |
256 | struct consumer_relayd_sock_pair { | |
257 | /* Network sequence number. */ | |
98cf381a | 258 | uint64_t net_seq_idx; |
00e2e675 DG |
259 | /* Number of stream associated with this relayd */ |
260 | unsigned int refcount; | |
173af62f DG |
261 | |
262 | /* | |
263 | * This flag indicates whether or not we should destroy this object. The | |
264 | * destruction should ONLY occurs when this flag is set and the refcount is | |
265 | * set to zero. | |
266 | */ | |
267 | unsigned int destroy_flag; | |
268 | ||
51d7db73 DG |
269 | /* |
270 | * Mutex protecting the control socket to avoid out of order packets | |
271 | * between threads sending data to the relayd. Since metadata data is sent | |
272 | * over that socket, at least two sendmsg() are needed (header + data) | |
273 | * creating a race for packets to overlap between threads using it. | |
74251bb8 DG |
274 | * |
275 | * This is nested INSIDE the consumer_data lock. | |
276 | * This is nested INSIDE the stream lock. | |
51d7db73 | 277 | */ |
00e2e675 | 278 | pthread_mutex_t ctrl_sock_mutex; |
51d7db73 DG |
279 | |
280 | /* Control socket. Command and metadata are passed over it */ | |
6151a90f | 281 | struct lttcomm_relayd_sock control_sock; |
51d7db73 DG |
282 | |
283 | /* | |
284 | * We don't need a mutex at this point since we only splice or write single | |
285 | * large chunk of data with a header appended at the begining. Moreover, | |
286 | * this socket is for now only used in a single thread. | |
287 | */ | |
6151a90f | 288 | struct lttcomm_relayd_sock data_sock; |
d88aee68 | 289 | struct lttng_ht_node_u64 node; |
c5b6f4f0 | 290 | |
f7079f67 DG |
291 | /* Session id on both sides for the sockets. */ |
292 | uint64_t relayd_session_id; | |
293 | uint64_t sessiond_session_id; | |
3bd1e081 MD |
294 | }; |
295 | ||
296 | /* | |
297 | * UST consumer local data to the program. One or more instance per | |
298 | * process. | |
299 | */ | |
300 | struct lttng_consumer_local_data { | |
4078b776 MD |
301 | /* |
302 | * Function to call when data is available on a buffer. | |
303 | * Returns the number of bytes read, or negative error value. | |
304 | */ | |
305 | ssize_t (*on_buffer_ready)(struct lttng_consumer_stream *stream, | |
d41f73b7 | 306 | struct lttng_consumer_local_data *ctx); |
3bd1e081 MD |
307 | /* |
308 | * function to call when we receive a new channel, it receives a | |
309 | * newly allocated channel, depending on the return code of this | |
310 | * function, the new channel will be handled by the application | |
311 | * or the library. | |
312 | * | |
313 | * Returns: | |
314 | * > 0 (success, FD is kept by application) | |
315 | * == 0 (success, FD is left to library) | |
316 | * < 0 (error) | |
317 | */ | |
318 | int (*on_recv_channel)(struct lttng_consumer_channel *channel); | |
319 | /* | |
320 | * function to call when we receive a new stream, it receives a | |
321 | * newly allocated stream, depending on the return code of this | |
322 | * function, the new stream will be handled by the application | |
323 | * or the library. | |
324 | * | |
325 | * Returns: | |
326 | * > 0 (success, FD is kept by application) | |
327 | * == 0 (success, FD is left to library) | |
328 | * < 0 (error) | |
329 | */ | |
330 | int (*on_recv_stream)(struct lttng_consumer_stream *stream); | |
331 | /* | |
332 | * function to call when a stream is getting updated by the session | |
333 | * daemon, this function receives the sessiond key and the new | |
334 | * state, depending on the return code of this function the | |
335 | * update of state for the stream is handled by the application | |
336 | * or the library. | |
337 | * | |
338 | * Returns: | |
339 | * > 0 (success, FD is kept by application) | |
340 | * == 0 (success, FD is left to library) | |
341 | * < 0 (error) | |
342 | */ | |
bcfa3ff9 | 343 | int (*on_update_stream)(uint64_t sessiond_key, uint32_t state); |
331744e3 | 344 | enum lttng_consumer_type type; |
3bd1e081 MD |
345 | /* socket to communicate errors with sessiond */ |
346 | int consumer_error_socket; | |
331744e3 JD |
347 | /* socket to ask metadata to sessiond */ |
348 | int consumer_metadata_socket; | |
3bd1e081 MD |
349 | /* socket to exchange commands with sessiond */ |
350 | char *consumer_command_sock_path; | |
351 | /* communication with splice */ | |
352 | int consumer_thread_pipe[2]; | |
d8ef542d | 353 | int consumer_channel_pipe[2]; |
fb3a43a9 | 354 | int consumer_splice_metadata_pipe[2]; |
50f8ae69 | 355 | /* Data stream poll thread pipe. To transfer data stream to the thread */ |
acdb9057 | 356 | struct lttng_pipe *consumer_data_pipe; |
3bd1e081 MD |
357 | /* to let the signal handler wake up the fd receiver thread */ |
358 | int consumer_should_quit[2]; | |
fb3a43a9 | 359 | /* Metadata poll thread pipe. Transfer metadata stream to it */ |
13886d2d | 360 | struct lttng_pipe *consumer_metadata_pipe; |
3bd1e081 MD |
361 | }; |
362 | ||
363 | /* | |
364 | * Library-level data. One instance per process. | |
365 | */ | |
366 | struct lttng_consumer_global_data { | |
367 | /* | |
e4421fec DG |
368 | * At this time, this lock is used to ensure coherence between the count |
369 | * and number of element in the hash table. It's also a protection for | |
6065ceec DG |
370 | * concurrent read/write between threads. |
371 | * | |
74251bb8 DG |
372 | * This is nested OUTSIDE the stream lock. |
373 | * This is nested OUTSIDE the consumer_relayd_sock_pair lock. | |
3bd1e081 MD |
374 | */ |
375 | pthread_mutex_t lock; | |
e4421fec | 376 | |
3bd1e081 | 377 | /* |
3cc2f24a DG |
378 | * Number of streams in the data stream hash table declared outside. |
379 | * Protected by consumer_data.lock. | |
3bd1e081 MD |
380 | */ |
381 | int stream_count; | |
3cc2f24a DG |
382 | |
383 | /* Channel hash table protected by consumer_data.lock. */ | |
e4421fec | 384 | struct lttng_ht *channel_ht; |
3bd1e081 MD |
385 | /* |
386 | * Flag specifying if the local array of FDs needs update in the | |
387 | * poll function. Protected by consumer_data.lock. | |
388 | */ | |
389 | unsigned int need_update; | |
390 | enum lttng_consumer_type type; | |
00e2e675 DG |
391 | |
392 | /* | |
393 | * Relayd socket(s) hashtable indexed by network sequence number. Each | |
394 | * stream has an index which associate the right relayd socket to use. | |
395 | */ | |
396 | struct lttng_ht *relayd_ht; | |
53632229 DG |
397 | |
398 | /* | |
399 | * This hash table contains all streams (metadata and data) indexed by | |
400 | * session id. In other words, the ht is indexed by session id and each | |
401 | * bucket contains the list of associated streams. | |
402 | * | |
403 | * This HT uses the "node_session_id" of the consumer stream. | |
404 | */ | |
405 | struct lttng_ht *stream_list_ht; | |
d8ef542d MD |
406 | |
407 | /* | |
408 | * This HT uses the "node_channel_id" of the consumer stream. | |
409 | */ | |
410 | struct lttng_ht *stream_per_chan_id_ht; | |
3bd1e081 MD |
411 | }; |
412 | ||
e4421fec DG |
413 | /* |
414 | * Init consumer data structures. | |
415 | */ | |
ffe60014 | 416 | void lttng_consumer_init(void); |
e4421fec | 417 | |
3bd1e081 MD |
418 | /* |
419 | * Set the error socket for communication with a session daemon. | |
420 | */ | |
ffe60014 DG |
421 | void lttng_consumer_set_error_sock(struct lttng_consumer_local_data *ctx, |
422 | int sock); | |
3bd1e081 MD |
423 | |
424 | /* | |
425 | * Set the command socket path for communication with a session daemon. | |
426 | */ | |
ffe60014 | 427 | void lttng_consumer_set_command_sock_path( |
3bd1e081 MD |
428 | struct lttng_consumer_local_data *ctx, char *sock); |
429 | ||
430 | /* | |
431 | * Send return code to session daemon. | |
432 | * | |
433 | * Returns the return code of sendmsg : the number of bytes transmitted or -1 | |
434 | * on error. | |
435 | */ | |
ffe60014 | 436 | int lttng_consumer_send_error(struct lttng_consumer_local_data *ctx, int cmd); |
3bd1e081 MD |
437 | |
438 | /* | |
439 | * Called from signal handler to ensure a clean exit. | |
440 | */ | |
ffe60014 | 441 | void lttng_consumer_should_exit(struct lttng_consumer_local_data *ctx); |
3bd1e081 MD |
442 | |
443 | /* | |
444 | * Cleanup the daemon's socket on exit. | |
445 | */ | |
ffe60014 | 446 | void lttng_consumer_cleanup(void); |
3bd1e081 MD |
447 | |
448 | /* | |
449 | * Flush pending writes to trace output disk file. | |
450 | */ | |
ffe60014 DG |
451 | void lttng_consumer_sync_trace_file(struct lttng_consumer_stream *stream, |
452 | off_t orig_offset); | |
3bd1e081 MD |
453 | |
454 | /* | |
455 | * Poll on the should_quit pipe and the command socket return -1 on error and | |
456 | * should exit, 0 if data is available on the command socket | |
457 | */ | |
ffe60014 | 458 | int lttng_consumer_poll_socket(struct pollfd *kconsumer_sockpoll); |
3bd1e081 | 459 | |
d88aee68 DG |
460 | struct lttng_consumer_stream *consumer_allocate_stream(uint64_t channel_key, |
461 | uint64_t stream_key, | |
3bd1e081 | 462 | enum lttng_consumer_stream_state state, |
ffe60014 | 463 | const char *channel_name, |
6df2e2c9 | 464 | uid_t uid, |
00e2e675 | 465 | gid_t gid, |
57a269f2 | 466 | uint64_t relayd_id, |
53632229 | 467 | uint64_t session_id, |
ffe60014 DG |
468 | int cpu, |
469 | int *alloc_ret, | |
470 | enum consumer_channel_type type); | |
d88aee68 | 471 | struct lttng_consumer_channel *consumer_allocate_channel(uint64_t key, |
ffe60014 DG |
472 | uint64_t session_id, |
473 | const char *pathname, | |
474 | const char *name, | |
475 | uid_t uid, | |
476 | gid_t gid, | |
57a269f2 | 477 | uint64_t relayd_id, |
1624d5b7 JD |
478 | enum lttng_event_output output, |
479 | uint64_t tracefile_size, | |
cb7c6909 JD |
480 | uint64_t tracefile_count, |
481 | uint64_t session_id_per_pid); | |
ffe60014 | 482 | void consumer_del_stream(struct lttng_consumer_stream *stream, |
e316aad5 | 483 | struct lttng_ht *ht); |
ffe60014 | 484 | void consumer_del_metadata_stream(struct lttng_consumer_stream *stream, |
e316aad5 | 485 | struct lttng_ht *ht); |
d8ef542d MD |
486 | int consumer_add_channel(struct lttng_consumer_channel *channel, |
487 | struct lttng_consumer_local_data *ctx); | |
ffe60014 | 488 | void consumer_del_channel(struct lttng_consumer_channel *channel); |
3bd1e081 | 489 | |
00e2e675 | 490 | /* lttng-relayd consumer command */ |
00e2e675 | 491 | struct consumer_relayd_sock_pair *consumer_allocate_relayd_sock_pair( |
98cf381a | 492 | uint64_t net_seq_idx); |
d88aee68 DG |
493 | struct consumer_relayd_sock_pair *consumer_find_relayd(uint64_t key); |
494 | struct lttng_consumer_channel *consumer_find_channel(uint64_t key); | |
00e2e675 DG |
495 | int consumer_handle_stream_before_relayd(struct lttng_consumer_stream *stream, |
496 | size_t data_size); | |
c869f647 | 497 | void consumer_steal_stream_key(int key, struct lttng_ht *ht); |
00e2e675 | 498 | |
ffe60014 | 499 | struct lttng_consumer_local_data *lttng_consumer_create( |
3bd1e081 | 500 | enum lttng_consumer_type type, |
4078b776 | 501 | ssize_t (*buffer_ready)(struct lttng_consumer_stream *stream, |
d41f73b7 | 502 | struct lttng_consumer_local_data *ctx), |
3bd1e081 MD |
503 | int (*recv_channel)(struct lttng_consumer_channel *channel), |
504 | int (*recv_stream)(struct lttng_consumer_stream *stream), | |
bcfa3ff9 | 505 | int (*update_stream)(uint64_t sessiond_key, uint32_t state)); |
ffe60014 DG |
506 | void lttng_consumer_destroy(struct lttng_consumer_local_data *ctx); |
507 | ssize_t lttng_consumer_on_read_subbuffer_mmap( | |
3bd1e081 | 508 | struct lttng_consumer_local_data *ctx, |
1d4dfdef DG |
509 | struct lttng_consumer_stream *stream, unsigned long len, |
510 | unsigned long padding); | |
ffe60014 | 511 | ssize_t lttng_consumer_on_read_subbuffer_splice( |
3bd1e081 | 512 | struct lttng_consumer_local_data *ctx, |
1d4dfdef DG |
513 | struct lttng_consumer_stream *stream, unsigned long len, |
514 | unsigned long padding); | |
ffe60014 DG |
515 | int lttng_consumer_take_snapshot(struct lttng_consumer_stream *stream); |
516 | int lttng_consumer_get_produced_snapshot(struct lttng_consumer_stream *stream, | |
3bd1e081 | 517 | unsigned long *pos); |
ffe60014 DG |
518 | void *consumer_thread_metadata_poll(void *data); |
519 | void *consumer_thread_data_poll(void *data); | |
520 | void *consumer_thread_sessiond_poll(void *data); | |
d8ef542d | 521 | void *consumer_thread_channel_poll(void *data); |
ffe60014 | 522 | int lttng_consumer_recv_cmd(struct lttng_consumer_local_data *ctx, |
3bd1e081 MD |
523 | int sock, struct pollfd *consumer_sockpoll); |
524 | ||
4078b776 | 525 | ssize_t lttng_consumer_read_subbuffer(struct lttng_consumer_stream *stream, |
d41f73b7 MD |
526 | struct lttng_consumer_local_data *ctx); |
527 | int lttng_consumer_on_recv_stream(struct lttng_consumer_stream *stream); | |
98cf381a | 528 | int consumer_add_relayd_socket(uint64_t net_seq_idx, int sock_type, |
7735ef9e | 529 | struct lttng_consumer_local_data *ctx, int sock, |
6151a90f | 530 | struct pollfd *consumer_sockpoll, struct lttcomm_relayd_sock *relayd_sock, |
bcfa3ff9 | 531 | uint64_t sessiond_id); |
a6ba4fe1 DG |
532 | void consumer_flag_relayd_for_destroy( |
533 | struct consumer_relayd_sock_pair *relayd); | |
6d805429 | 534 | int consumer_data_pending(uint64_t id); |
f50f23d9 | 535 | int consumer_send_status_msg(int sock, int ret_code); |
ffe60014 DG |
536 | int consumer_send_status_channel(int sock, |
537 | struct lttng_consumer_channel *channel); | |
a0cbdd2e MD |
538 | void notify_thread_del_channel(struct lttng_consumer_local_data *ctx, |
539 | uint64_t key); | |
d41f73b7 | 540 | |
f02e1e8a | 541 | #endif /* LIB_CONSUMER_H */ |