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> |
3bd1e081 | 34 | |
3bd1e081 MD |
35 | /* Commands for consumer */ |
36 | enum lttng_consumer_command { | |
37 | LTTNG_CONSUMER_ADD_CHANNEL, | |
38 | LTTNG_CONSUMER_ADD_STREAM, | |
39 | /* pause, delete, active depending on fd state */ | |
40 | LTTNG_CONSUMER_UPDATE_STREAM, | |
41 | /* inform the consumer to quit when all fd has hang up */ | |
42 | LTTNG_CONSUMER_STOP, | |
00e2e675 | 43 | LTTNG_CONSUMER_ADD_RELAYD_SOCKET, |
173af62f DG |
44 | /* Inform the consumer to kill a specific relayd connection */ |
45 | LTTNG_CONSUMER_DESTROY_RELAYD, | |
53632229 | 46 | /* Return to the sessiond if there is data pending for a session */ |
6d805429 | 47 | LTTNG_CONSUMER_DATA_PENDING, |
ffe60014 DG |
48 | /* Consumer creates a channel and returns it to sessiond. */ |
49 | LTTNG_CONSUMER_ASK_CHANNEL_CREATION, | |
50 | LTTNG_CONSUMER_GET_CHANNEL, | |
51 | LTTNG_CONSUMER_DESTROY_CHANNEL, | |
d88aee68 DG |
52 | LTTNG_CONSUMER_PUSH_METADATA, |
53 | LTTNG_CONSUMER_CLOSE_METADATA, | |
54 | LTTNG_CONSUMER_SETUP_METADATA, | |
3bd1e081 MD |
55 | }; |
56 | ||
57 | /* State of each fd in consumer */ | |
58 | enum lttng_consumer_stream_state { | |
59 | LTTNG_CONSUMER_ACTIVE_STREAM, | |
60 | LTTNG_CONSUMER_PAUSE_STREAM, | |
61 | LTTNG_CONSUMER_DELETE_STREAM, | |
62 | }; | |
63 | ||
3bd1e081 MD |
64 | enum lttng_consumer_type { |
65 | LTTNG_CONSUMER_UNKNOWN = 0, | |
66 | LTTNG_CONSUMER_KERNEL, | |
7753dea8 MD |
67 | LTTNG_CONSUMER64_UST, |
68 | LTTNG_CONSUMER32_UST, | |
3bd1e081 MD |
69 | }; |
70 | ||
8994307f DG |
71 | enum consumer_endpoint_status { |
72 | CONSUMER_ENDPOINT_ACTIVE, | |
73 | CONSUMER_ENDPOINT_INACTIVE, | |
74 | }; | |
75 | ||
ffe60014 DG |
76 | enum consumer_channel_output { |
77 | CONSUMER_CHANNEL_MMAP = 0, | |
78 | CONSUMER_CHANNEL_SPLICE = 1, | |
79 | }; | |
80 | ||
81 | enum consumer_channel_type { | |
82 | CONSUMER_CHANNEL_TYPE_METADATA = 0, | |
d88aee68 | 83 | CONSUMER_CHANNEL_TYPE_DATA = 1, |
ffe60014 DG |
84 | }; |
85 | ||
86 | struct stream_list { | |
87 | struct cds_list_head head; | |
88 | unsigned int count; | |
89 | }; | |
90 | ||
3bd1e081 | 91 | struct lttng_consumer_channel { |
ffe60014 | 92 | /* HT node used for consumer_data.channel_ht */ |
d88aee68 | 93 | struct lttng_ht_node_u64 node; |
ffe60014 | 94 | /* Indexed key. Incremented value in the consumer. */ |
d88aee68 | 95 | uint64_t key; |
ffe60014 DG |
96 | /* Number of streams referencing this channel */ |
97 | int refcount; | |
98 | /* Tracing session id on the session daemon side. */ | |
99 | uint64_t session_id; | |
100 | /* Channel trace file path name. */ | |
101 | char pathname[PATH_MAX]; | |
102 | /* Channel name. */ | |
103 | char name[LTTNG_SYMBOL_NAME_LEN]; | |
104 | /* UID and GID of the channel. */ | |
105 | uid_t uid; | |
106 | gid_t gid; | |
107 | /* Relayd id of the channel. -1 if it does not apply. */ | |
d88aee68 | 108 | int64_t relayd_id; |
c30aaa51 | 109 | /* |
ffe60014 DG |
110 | * Number of streams NOT initialized yet. This is used in order to not |
111 | * delete this channel if streams are getting initialized. | |
c30aaa51 | 112 | */ |
ffe60014 DG |
113 | unsigned int nb_init_stream_left; |
114 | /* Output type (mmap or splice). */ | |
115 | enum consumer_channel_output output; | |
116 | /* Channel type for stream */ | |
117 | enum consumer_channel_type type; | |
c30aaa51 | 118 | |
3bd1e081 | 119 | /* For UST */ |
ffe60014 DG |
120 | struct ustctl_consumer_channel *uchan; |
121 | unsigned char uuid[UUID_STR_LEN]; | |
122 | /* | |
123 | * Temporary stream list used to store the streams once created and waiting | |
124 | * to be sent to the session daemon by receiving the | |
125 | * LTTNG_CONSUMER_GET_CHANNEL. | |
126 | */ | |
127 | struct stream_list streams; | |
d88aee68 DG |
128 | /* |
129 | * Set if the channel is metadata. We keep a reference to the stream | |
130 | * because we have to flush data once pushed by the session daemon. For a | |
131 | * regular channel, this is always set to NULL. | |
132 | */ | |
133 | struct lttng_consumer_stream *metadata_stream; | |
134 | /* | |
135 | * Metadata written so far. Helps keeping track of | |
136 | * contiguousness and order. | |
137 | */ | |
138 | uint64_t contig_metadata_written; | |
d8ef542d MD |
139 | |
140 | /* for UST */ | |
141 | int wait_fd; | |
142 | /* Node within channel thread ht */ | |
143 | struct lttng_ht_node_u64 wait_fd_node; | |
3bd1e081 MD |
144 | }; |
145 | ||
3bd1e081 MD |
146 | /* |
147 | * Internal representation of the streams, sessiond_key is used to identify | |
148 | * uniquely a stream. | |
149 | */ | |
150 | struct lttng_consumer_stream { | |
53632229 | 151 | /* HT node used by the data_ht and metadata_ht */ |
d88aee68 | 152 | struct lttng_ht_node_u64 node; |
d8ef542d MD |
153 | /* stream indexed per channel key node */ |
154 | struct lttng_ht_node_u64 node_channel_id; | |
53632229 | 155 | /* HT node used in consumer_data.stream_list_ht */ |
d88aee68 | 156 | struct lttng_ht_node_u64 node_session_id; |
ffe60014 DG |
157 | /* Pointer to associated channel. */ |
158 | struct lttng_consumer_channel *chan; | |
159 | ||
160 | /* Key by which the stream is indexed for 'node'. */ | |
d88aee68 | 161 | uint64_t key; |
3bd1e081 | 162 | /* |
ffe60014 DG |
163 | * File descriptor of the data output file. This can be either a file or a |
164 | * socket fd for relayd streaming. | |
3bd1e081 | 165 | */ |
3bd1e081 | 166 | int out_fd; /* output file to write the data */ |
ffe60014 DG |
167 | /* Write position in the output file descriptor */ |
168 | off_t out_fd_offset; | |
3bd1e081 | 169 | enum lttng_consumer_stream_state state; |
b5c5fc29 | 170 | int shm_fd_is_copy; |
4078b776 | 171 | int data_read; |
d056b477 | 172 | int hangup_flush_done; |
ffe60014 DG |
173 | enum lttng_event_output output; |
174 | /* Maximum subbuffer size. */ | |
175 | unsigned long max_sb_size; | |
176 | ||
177 | /* | |
178 | * Still used by the kernel for MMAP output. For UST, the ustctl getter is | |
179 | * used for the mmap base and offset. | |
180 | */ | |
181 | void *mmap_base; | |
182 | unsigned long mmap_len; | |
183 | ||
184 | /* For UST */ | |
185 | ||
186 | int wait_fd; | |
6df2e2c9 MD |
187 | /* UID/GID of the user owning the session to which stream belongs */ |
188 | uid_t uid; | |
189 | gid_t gid; | |
00e2e675 | 190 | /* Network sequence number. Indicating on which relayd socket it goes. */ |
d88aee68 | 191 | uint64_t net_seq_idx; |
00e2e675 DG |
192 | /* Identify if the stream is the metadata */ |
193 | unsigned int metadata_flag; | |
194 | /* Used when the stream is set for network streaming */ | |
195 | uint64_t relayd_stream_id; | |
3604f373 DG |
196 | /* |
197 | * When sending a stream packet to a relayd, this number is used to track | |
198 | * the packet sent by the consumer and seen by the relayd. When sending the | |
199 | * data header to the relayd, this number is sent and if the transmission | |
200 | * was successful, it is incremented. | |
201 | * | |
202 | * Even if the full data is not fully transmitted it won't matter since | |
203 | * only two possible error can happen after that where either the relayd | |
204 | * died or a read error is detected on the stream making this value useless | |
205 | * after that. | |
206 | * | |
207 | * This value SHOULD be read/updated atomically or with the lock acquired. | |
208 | */ | |
173af62f | 209 | uint64_t next_net_seq_num; |
63281d5d | 210 | /* |
74251bb8 DG |
211 | * Lock to use the stream FDs since they are used between threads. |
212 | * | |
213 | * This is nested INSIDE the consumer_data lock. | |
214 | * This is nested OUTSIDE consumer_relayd_sock_pair lock. | |
63281d5d | 215 | */ |
53632229 DG |
216 | pthread_mutex_t lock; |
217 | /* Tracing session id */ | |
218 | uint64_t session_id; | |
8994307f DG |
219 | /* |
220 | * Indicates if the stream end point is still active or not (network | |
221 | * streaming or local file system). The thread "owning" the stream is | |
222 | * handling this status and can be notified of a state change through the | |
223 | * consumer data appropriate pipe. | |
224 | */ | |
225 | enum consumer_endpoint_status endpoint_status; | |
ffe60014 DG |
226 | /* Stream name. Format is: <channel_name>_<cpu_number> */ |
227 | char name[LTTNG_SYMBOL_NAME_LEN]; | |
228 | /* Internal state of libustctl. */ | |
229 | struct ustctl_consumer_stream *ustream; | |
230 | struct cds_list_head send_node; | |
00e2e675 DG |
231 | }; |
232 | ||
233 | /* | |
234 | * Internal representation of a relayd socket pair. | |
235 | */ | |
236 | struct consumer_relayd_sock_pair { | |
237 | /* Network sequence number. */ | |
d88aee68 | 238 | int64_t net_seq_idx; |
00e2e675 DG |
239 | /* Number of stream associated with this relayd */ |
240 | unsigned int refcount; | |
173af62f DG |
241 | |
242 | /* | |
243 | * This flag indicates whether or not we should destroy this object. The | |
244 | * destruction should ONLY occurs when this flag is set and the refcount is | |
245 | * set to zero. | |
246 | */ | |
247 | unsigned int destroy_flag; | |
248 | ||
51d7db73 DG |
249 | /* |
250 | * Mutex protecting the control socket to avoid out of order packets | |
251 | * between threads sending data to the relayd. Since metadata data is sent | |
252 | * over that socket, at least two sendmsg() are needed (header + data) | |
253 | * creating a race for packets to overlap between threads using it. | |
74251bb8 DG |
254 | * |
255 | * This is nested INSIDE the consumer_data lock. | |
256 | * This is nested INSIDE the stream lock. | |
51d7db73 | 257 | */ |
00e2e675 | 258 | pthread_mutex_t ctrl_sock_mutex; |
51d7db73 DG |
259 | |
260 | /* Control socket. Command and metadata are passed over it */ | |
00e2e675 | 261 | struct lttcomm_sock control_sock; |
51d7db73 DG |
262 | |
263 | /* | |
264 | * We don't need a mutex at this point since we only splice or write single | |
265 | * large chunk of data with a header appended at the begining. Moreover, | |
266 | * this socket is for now only used in a single thread. | |
267 | */ | |
00e2e675 | 268 | struct lttcomm_sock data_sock; |
d88aee68 | 269 | struct lttng_ht_node_u64 node; |
c5b6f4f0 | 270 | |
f7079f67 DG |
271 | /* Session id on both sides for the sockets. */ |
272 | uint64_t relayd_session_id; | |
273 | uint64_t sessiond_session_id; | |
3bd1e081 MD |
274 | }; |
275 | ||
276 | /* | |
277 | * UST consumer local data to the program. One or more instance per | |
278 | * process. | |
279 | */ | |
280 | struct lttng_consumer_local_data { | |
4078b776 MD |
281 | /* |
282 | * Function to call when data is available on a buffer. | |
283 | * Returns the number of bytes read, or negative error value. | |
284 | */ | |
285 | ssize_t (*on_buffer_ready)(struct lttng_consumer_stream *stream, | |
d41f73b7 | 286 | struct lttng_consumer_local_data *ctx); |
3bd1e081 MD |
287 | /* |
288 | * function to call when we receive a new channel, it receives a | |
289 | * newly allocated channel, depending on the return code of this | |
290 | * function, the new channel will be handled by the application | |
291 | * or the library. | |
292 | * | |
293 | * Returns: | |
294 | * > 0 (success, FD is kept by application) | |
295 | * == 0 (success, FD is left to library) | |
296 | * < 0 (error) | |
297 | */ | |
298 | int (*on_recv_channel)(struct lttng_consumer_channel *channel); | |
299 | /* | |
300 | * function to call when we receive a new stream, it receives a | |
301 | * newly allocated stream, depending on the return code of this | |
302 | * function, the new stream will be handled by the application | |
303 | * or the library. | |
304 | * | |
305 | * Returns: | |
306 | * > 0 (success, FD is kept by application) | |
307 | * == 0 (success, FD is left to library) | |
308 | * < 0 (error) | |
309 | */ | |
310 | int (*on_recv_stream)(struct lttng_consumer_stream *stream); | |
311 | /* | |
312 | * function to call when a stream is getting updated by the session | |
313 | * daemon, this function receives the sessiond key and the new | |
314 | * state, depending on the return code of this function the | |
315 | * update of state for the stream is handled by the application | |
316 | * or the library. | |
317 | * | |
318 | * Returns: | |
319 | * > 0 (success, FD is kept by application) | |
320 | * == 0 (success, FD is left to library) | |
321 | * < 0 (error) | |
322 | */ | |
323 | int (*on_update_stream)(int sessiond_key, uint32_t state); | |
324 | /* socket to communicate errors with sessiond */ | |
325 | int consumer_error_socket; | |
326 | /* socket to exchange commands with sessiond */ | |
327 | char *consumer_command_sock_path; | |
328 | /* communication with splice */ | |
329 | int consumer_thread_pipe[2]; | |
d8ef542d | 330 | int consumer_channel_pipe[2]; |
fb3a43a9 | 331 | int consumer_splice_metadata_pipe[2]; |
50f8ae69 DG |
332 | /* Data stream poll thread pipe. To transfer data stream to the thread */ |
333 | int consumer_data_pipe[2]; | |
3bd1e081 MD |
334 | /* to let the signal handler wake up the fd receiver thread */ |
335 | int consumer_should_quit[2]; | |
fb3a43a9 DG |
336 | /* Metadata poll thread pipe. Transfer metadata stream to it */ |
337 | int consumer_metadata_pipe[2]; | |
3bd1e081 MD |
338 | }; |
339 | ||
340 | /* | |
341 | * Library-level data. One instance per process. | |
342 | */ | |
343 | struct lttng_consumer_global_data { | |
344 | /* | |
e4421fec DG |
345 | * At this time, this lock is used to ensure coherence between the count |
346 | * and number of element in the hash table. It's also a protection for | |
6065ceec DG |
347 | * concurrent read/write between threads. |
348 | * | |
74251bb8 DG |
349 | * This is nested OUTSIDE the stream lock. |
350 | * This is nested OUTSIDE the consumer_relayd_sock_pair lock. | |
3bd1e081 MD |
351 | */ |
352 | pthread_mutex_t lock; | |
e4421fec | 353 | |
3bd1e081 | 354 | /* |
3cc2f24a DG |
355 | * Number of streams in the data stream hash table declared outside. |
356 | * Protected by consumer_data.lock. | |
3bd1e081 MD |
357 | */ |
358 | int stream_count; | |
3cc2f24a DG |
359 | |
360 | /* Channel hash table protected by consumer_data.lock. */ | |
e4421fec | 361 | struct lttng_ht *channel_ht; |
3bd1e081 MD |
362 | /* |
363 | * Flag specifying if the local array of FDs needs update in the | |
364 | * poll function. Protected by consumer_data.lock. | |
365 | */ | |
366 | unsigned int need_update; | |
367 | enum lttng_consumer_type type; | |
00e2e675 DG |
368 | |
369 | /* | |
370 | * Relayd socket(s) hashtable indexed by network sequence number. Each | |
371 | * stream has an index which associate the right relayd socket to use. | |
372 | */ | |
373 | struct lttng_ht *relayd_ht; | |
53632229 DG |
374 | |
375 | /* | |
376 | * This hash table contains all streams (metadata and data) indexed by | |
377 | * session id. In other words, the ht is indexed by session id and each | |
378 | * bucket contains the list of associated streams. | |
379 | * | |
380 | * This HT uses the "node_session_id" of the consumer stream. | |
381 | */ | |
382 | struct lttng_ht *stream_list_ht; | |
d8ef542d MD |
383 | |
384 | /* | |
385 | * This HT uses the "node_channel_id" of the consumer stream. | |
386 | */ | |
387 | struct lttng_ht *stream_per_chan_id_ht; | |
3bd1e081 MD |
388 | }; |
389 | ||
e4421fec DG |
390 | /* |
391 | * Init consumer data structures. | |
392 | */ | |
ffe60014 | 393 | void lttng_consumer_init(void); |
e4421fec | 394 | |
3bd1e081 MD |
395 | /* |
396 | * Set the error socket for communication with a session daemon. | |
397 | */ | |
ffe60014 DG |
398 | void lttng_consumer_set_error_sock(struct lttng_consumer_local_data *ctx, |
399 | int sock); | |
3bd1e081 MD |
400 | |
401 | /* | |
402 | * Set the command socket path for communication with a session daemon. | |
403 | */ | |
ffe60014 | 404 | void lttng_consumer_set_command_sock_path( |
3bd1e081 MD |
405 | struct lttng_consumer_local_data *ctx, char *sock); |
406 | ||
407 | /* | |
408 | * Send return code to session daemon. | |
409 | * | |
410 | * Returns the return code of sendmsg : the number of bytes transmitted or -1 | |
411 | * on error. | |
412 | */ | |
ffe60014 | 413 | int lttng_consumer_send_error(struct lttng_consumer_local_data *ctx, int cmd); |
3bd1e081 MD |
414 | |
415 | /* | |
416 | * Called from signal handler to ensure a clean exit. | |
417 | */ | |
ffe60014 | 418 | void lttng_consumer_should_exit(struct lttng_consumer_local_data *ctx); |
3bd1e081 MD |
419 | |
420 | /* | |
421 | * Cleanup the daemon's socket on exit. | |
422 | */ | |
ffe60014 | 423 | void lttng_consumer_cleanup(void); |
3bd1e081 MD |
424 | |
425 | /* | |
426 | * Flush pending writes to trace output disk file. | |
427 | */ | |
ffe60014 DG |
428 | void lttng_consumer_sync_trace_file(struct lttng_consumer_stream *stream, |
429 | off_t orig_offset); | |
3bd1e081 MD |
430 | |
431 | /* | |
432 | * Poll on the should_quit pipe and the command socket return -1 on error and | |
433 | * should exit, 0 if data is available on the command socket | |
434 | */ | |
ffe60014 | 435 | int lttng_consumer_poll_socket(struct pollfd *kconsumer_sockpoll); |
3bd1e081 | 436 | |
d88aee68 DG |
437 | struct lttng_consumer_stream *consumer_allocate_stream(uint64_t channel_key, |
438 | uint64_t stream_key, | |
3bd1e081 | 439 | enum lttng_consumer_stream_state state, |
ffe60014 | 440 | const char *channel_name, |
6df2e2c9 | 441 | uid_t uid, |
00e2e675 | 442 | gid_t gid, |
ffe60014 | 443 | int relayd_id, |
53632229 | 444 | uint64_t session_id, |
ffe60014 DG |
445 | int cpu, |
446 | int *alloc_ret, | |
447 | enum consumer_channel_type type); | |
d88aee68 | 448 | struct lttng_consumer_channel *consumer_allocate_channel(uint64_t key, |
ffe60014 DG |
449 | uint64_t session_id, |
450 | const char *pathname, | |
451 | const char *name, | |
452 | uid_t uid, | |
453 | gid_t gid, | |
454 | int relayd_id, | |
455 | enum lttng_event_output output); | |
456 | void consumer_del_stream(struct lttng_consumer_stream *stream, | |
e316aad5 | 457 | struct lttng_ht *ht); |
ffe60014 | 458 | void consumer_del_metadata_stream(struct lttng_consumer_stream *stream, |
e316aad5 | 459 | struct lttng_ht *ht); |
d8ef542d MD |
460 | int consumer_add_channel(struct lttng_consumer_channel *channel, |
461 | struct lttng_consumer_local_data *ctx); | |
ffe60014 | 462 | void consumer_del_channel(struct lttng_consumer_channel *channel); |
3bd1e081 | 463 | |
00e2e675 | 464 | /* lttng-relayd consumer command */ |
00e2e675 DG |
465 | struct consumer_relayd_sock_pair *consumer_allocate_relayd_sock_pair( |
466 | int net_seq_idx); | |
d88aee68 DG |
467 | struct consumer_relayd_sock_pair *consumer_find_relayd(uint64_t key); |
468 | struct lttng_consumer_channel *consumer_find_channel(uint64_t key); | |
00e2e675 DG |
469 | int consumer_handle_stream_before_relayd(struct lttng_consumer_stream *stream, |
470 | size_t data_size); | |
c869f647 | 471 | void consumer_steal_stream_key(int key, struct lttng_ht *ht); |
00e2e675 | 472 | |
ffe60014 | 473 | struct lttng_consumer_local_data *lttng_consumer_create( |
3bd1e081 | 474 | enum lttng_consumer_type type, |
4078b776 | 475 | ssize_t (*buffer_ready)(struct lttng_consumer_stream *stream, |
d41f73b7 | 476 | struct lttng_consumer_local_data *ctx), |
3bd1e081 MD |
477 | int (*recv_channel)(struct lttng_consumer_channel *channel), |
478 | int (*recv_stream)(struct lttng_consumer_stream *stream), | |
479 | int (*update_stream)(int sessiond_key, uint32_t state)); | |
ffe60014 DG |
480 | void lttng_consumer_destroy(struct lttng_consumer_local_data *ctx); |
481 | ssize_t lttng_consumer_on_read_subbuffer_mmap( | |
3bd1e081 | 482 | struct lttng_consumer_local_data *ctx, |
1d4dfdef DG |
483 | struct lttng_consumer_stream *stream, unsigned long len, |
484 | unsigned long padding); | |
ffe60014 | 485 | ssize_t lttng_consumer_on_read_subbuffer_splice( |
3bd1e081 | 486 | struct lttng_consumer_local_data *ctx, |
1d4dfdef DG |
487 | struct lttng_consumer_stream *stream, unsigned long len, |
488 | unsigned long padding); | |
ffe60014 DG |
489 | int lttng_consumer_take_snapshot(struct lttng_consumer_stream *stream); |
490 | int lttng_consumer_get_produced_snapshot(struct lttng_consumer_stream *stream, | |
3bd1e081 | 491 | unsigned long *pos); |
ffe60014 DG |
492 | void *consumer_thread_metadata_poll(void *data); |
493 | void *consumer_thread_data_poll(void *data); | |
494 | void *consumer_thread_sessiond_poll(void *data); | |
d8ef542d | 495 | void *consumer_thread_channel_poll(void *data); |
ffe60014 | 496 | int lttng_consumer_recv_cmd(struct lttng_consumer_local_data *ctx, |
3bd1e081 MD |
497 | int sock, struct pollfd *consumer_sockpoll); |
498 | ||
4078b776 | 499 | ssize_t lttng_consumer_read_subbuffer(struct lttng_consumer_stream *stream, |
d41f73b7 MD |
500 | struct lttng_consumer_local_data *ctx); |
501 | int lttng_consumer_on_recv_stream(struct lttng_consumer_stream *stream); | |
7735ef9e DG |
502 | int consumer_add_relayd_socket(int net_seq_idx, int sock_type, |
503 | struct lttng_consumer_local_data *ctx, int sock, | |
46e6455f DG |
504 | struct pollfd *consumer_sockpoll, struct lttcomm_sock *relayd_sock, |
505 | unsigned int sessiond_id); | |
a6ba4fe1 DG |
506 | void consumer_flag_relayd_for_destroy( |
507 | struct consumer_relayd_sock_pair *relayd); | |
6d805429 | 508 | int consumer_data_pending(uint64_t id); |
f50f23d9 | 509 | int consumer_send_status_msg(int sock, int ret_code); |
ffe60014 DG |
510 | int consumer_send_status_channel(int sock, |
511 | struct lttng_consumer_channel *channel); | |
d41f73b7 | 512 | |
f02e1e8a | 513 | #endif /* LIB_CONSUMER_H */ |