bash completion: add calls to _lttng_complete_sessions
[lttng-tools.git] / src / common / consumer.h
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1/*
2 * Copyright (C) 2011 - Julien Desfossez <julien.desfossez@polymtl.ca>
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3 * Mathieu Desnoyers <mathieu.desnoyers@efficios.com>
4 * 2012 - David Goulet <dgoulet@efficios.com>
3bd1e081 5 *
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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 *
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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 *
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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.
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18 */
19
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20#ifndef LIB_CONSUMER_H
21#define LIB_CONSUMER_H
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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
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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
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36/* Commands for consumer */
37enum 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,
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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,
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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,
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53 LTTNG_CONSUMER_PUSH_METADATA,
54 LTTNG_CONSUMER_CLOSE_METADATA,
55 LTTNG_CONSUMER_SETUP_METADATA,
7972aab2 56 LTTNG_CONSUMER_FLUSH_CHANNEL,
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57 LTTNG_CONSUMER_SNAPSHOT_CHANNEL,
58 LTTNG_CONSUMER_SNAPSHOT_METADATA,
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59};
60
61/* State of each fd in consumer */
62enum lttng_consumer_stream_state {
63 LTTNG_CONSUMER_ACTIVE_STREAM,
64 LTTNG_CONSUMER_PAUSE_STREAM,
65 LTTNG_CONSUMER_DELETE_STREAM,
66};
67
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68enum lttng_consumer_type {
69 LTTNG_CONSUMER_UNKNOWN = 0,
70 LTTNG_CONSUMER_KERNEL,
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71 LTTNG_CONSUMER64_UST,
72 LTTNG_CONSUMER32_UST,
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73};
74
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75enum consumer_endpoint_status {
76 CONSUMER_ENDPOINT_ACTIVE,
77 CONSUMER_ENDPOINT_INACTIVE,
78};
79
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80enum consumer_channel_output {
81 CONSUMER_CHANNEL_MMAP = 0,
82 CONSUMER_CHANNEL_SPLICE = 1,
83};
84
85enum consumer_channel_type {
86 CONSUMER_CHANNEL_TYPE_METADATA = 0,
d88aee68 87 CONSUMER_CHANNEL_TYPE_DATA = 1,
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88};
89
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90extern struct lttng_consumer_global_data consumer_data;
91
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92struct stream_list {
93 struct cds_list_head head;
94 unsigned int count;
95};
96
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97/* Stub. */
98struct consumer_metadata_cache;
99
3bd1e081 100struct lttng_consumer_channel {
ffe60014 101 /* HT node used for consumer_data.channel_ht */
d88aee68 102 struct lttng_ht_node_u64 node;
ffe60014 103 /* Indexed key. Incremented value in the consumer. */
d88aee68 104 uint64_t key;
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105 /* Number of streams referencing this channel */
106 int refcount;
107 /* Tracing session id on the session daemon side. */
108 uint64_t session_id;
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109 /*
110 * Session id when requesting metadata to the session daemon for
111 * a session with per-PID buffers.
112 */
113 uint64_t session_id_per_pid;
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114 /* Channel trace file path name. */
115 char pathname[PATH_MAX];
116 /* Channel name. */
117 char name[LTTNG_SYMBOL_NAME_LEN];
118 /* UID and GID of the channel. */
119 uid_t uid;
120 gid_t gid;
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121 /* Relayd id of the channel. -1ULL if it does not apply. */
122 uint64_t relayd_id;
c30aaa51 123 /*
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124 * Number of streams NOT initialized yet. This is used in order to not
125 * delete this channel if streams are getting initialized.
c30aaa51 126 */
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127 unsigned int nb_init_stream_left;
128 /* Output type (mmap or splice). */
129 enum consumer_channel_output output;
130 /* Channel type for stream */
131 enum consumer_channel_type type;
c30aaa51 132
3bd1e081 133 /* For UST */
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134 struct ustctl_consumer_channel *uchan;
135 unsigned char uuid[UUID_STR_LEN];
136 /*
137 * Temporary stream list used to store the streams once created and waiting
138 * to be sent to the session daemon by receiving the
139 * LTTNG_CONSUMER_GET_CHANNEL.
140 */
141 struct stream_list streams;
07b86b52 142
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143 /*
144 * Set if the channel is metadata. We keep a reference to the stream
145 * because we have to flush data once pushed by the session daemon. For a
146 * regular channel, this is always set to NULL.
147 */
148 struct lttng_consumer_stream *metadata_stream;
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149
150 /* for UST */
151 int wait_fd;
152 /* Node within channel thread ht */
153 struct lttng_ht_node_u64 wait_fd_node;
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154
155 /* Metadata cache is metadata channel */
156 struct consumer_metadata_cache *metadata_cache;
157 /* For metadata periodical flush */
158 int switch_timer_enabled;
159 timer_t switch_timer;
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160 int switch_timer_error;
161
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162 /* On-disk circular buffer */
163 uint64_t tracefile_size;
164 uint64_t tracefile_count;
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165 /*
166 * Monitor or not the streams of this channel meaning this indicates if the
167 * streams should be sent to the data/metadata thread or added to the no
168 * monitor list of the channel.
169 */
170 unsigned int monitor;
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171
172 /*
173 * Channel lock.
174 *
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175 * This lock protects against concurrent update of channel.
176 *
a9838785 177 * This is nested INSIDE the consumer data lock.
ec6ea7d0 178 * This is nested OUTSIDE the channel timer lock.
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179 * This is nested OUTSIDE the metadata cache lock.
180 * This is nested OUTSIDE stream lock.
181 * This is nested OUTSIDE consumer_relayd_sock_pair lock.
182 */
183 pthread_mutex_t lock;
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184
185 /*
186 * Channel teardown lock.
187 *
188 * This lock protect against teardown of channel. It is _never_
189 * taken by the timer handler.
190 *
191 * This is nested INSIDE the consumer data lock.
192 * This is nested INSIDE the channel lock.
193 * This is nested OUTSIDE the metadata cache lock.
194 * This is nested OUTSIDE stream lock.
195 * This is nested OUTSIDE consumer_relayd_sock_pair lock.
196 */
197 pthread_mutex_t timer_lock;
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198};
199
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200/*
201 * Internal representation of the streams, sessiond_key is used to identify
202 * uniquely a stream.
203 */
204struct lttng_consumer_stream {
53632229 205 /* HT node used by the data_ht and metadata_ht */
d88aee68 206 struct lttng_ht_node_u64 node;
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207 /* stream indexed per channel key node */
208 struct lttng_ht_node_u64 node_channel_id;
53632229 209 /* HT node used in consumer_data.stream_list_ht */
d88aee68 210 struct lttng_ht_node_u64 node_session_id;
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211 /* Pointer to associated channel. */
212 struct lttng_consumer_channel *chan;
213
214 /* Key by which the stream is indexed for 'node'. */
d88aee68 215 uint64_t key;
3bd1e081 216 /*
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217 * File descriptor of the data output file. This can be either a file or a
218 * socket fd for relayd streaming.
3bd1e081 219 */
3bd1e081 220 int out_fd; /* output file to write the data */
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221 /* Write position in the output file descriptor */
222 off_t out_fd_offset;
3bd1e081 223 enum lttng_consumer_stream_state state;
b5c5fc29 224 int shm_fd_is_copy;
4078b776 225 int data_read;
d056b477 226 int hangup_flush_done;
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227 enum lttng_event_output output;
228 /* Maximum subbuffer size. */
229 unsigned long max_sb_size;
230
231 /*
232 * Still used by the kernel for MMAP output. For UST, the ustctl getter is
233 * used for the mmap base and offset.
234 */
235 void *mmap_base;
236 unsigned long mmap_len;
237
238 /* For UST */
239
240 int wait_fd;
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241 /* UID/GID of the user owning the session to which stream belongs */
242 uid_t uid;
243 gid_t gid;
00e2e675 244 /* Network sequence number. Indicating on which relayd socket it goes. */
d88aee68 245 uint64_t net_seq_idx;
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246 /*
247 * Indicate if this stream was successfully sent to a relayd. This is set
248 * after the refcount of the relayd is incremented and is checked when the
249 * stream is closed before decrementing the refcount in order to avoid an
250 * unbalanced state.
251 */
252 unsigned int sent_to_relayd;
253
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254 /* Identify if the stream is the metadata */
255 unsigned int metadata_flag;
256 /* Used when the stream is set for network streaming */
257 uint64_t relayd_stream_id;
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258 /*
259 * When sending a stream packet to a relayd, this number is used to track
260 * the packet sent by the consumer and seen by the relayd. When sending the
261 * data header to the relayd, this number is sent and if the transmission
262 * was successful, it is incremented.
263 *
264 * Even if the full data is not fully transmitted it won't matter since
265 * only two possible error can happen after that where either the relayd
266 * died or a read error is detected on the stream making this value useless
267 * after that.
268 *
269 * This value SHOULD be read/updated atomically or with the lock acquired.
270 */
173af62f 271 uint64_t next_net_seq_num;
63281d5d 272 /*
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273 * Lock to use the stream FDs since they are used between threads.
274 *
275 * This is nested INSIDE the consumer_data lock.
73811ecc 276 * This is nested INSIDE the metadata cache lock.
a9838785 277 * This is nested INSIDE the channel lock.
ec6ea7d0 278 * This is nested INSIDE the channel timer lock.
74251bb8 279 * This is nested OUTSIDE consumer_relayd_sock_pair lock.
63281d5d 280 */
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281 pthread_mutex_t lock;
282 /* Tracing session id */
283 uint64_t session_id;
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284 /*
285 * Indicates if the stream end point is still active or not (network
286 * streaming or local file system). The thread "owning" the stream is
287 * handling this status and can be notified of a state change through the
288 * consumer data appropriate pipe.
289 */
290 enum consumer_endpoint_status endpoint_status;
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291 /* Stream name. Format is: <channel_name>_<cpu_number> */
292 char name[LTTNG_SYMBOL_NAME_LEN];
293 /* Internal state of libustctl. */
294 struct ustctl_consumer_stream *ustream;
295 struct cds_list_head send_node;
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296 /* On-disk circular buffer */
297 uint64_t tracefile_size_current;
298 uint64_t tracefile_count_current;
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299 /*
300 * Monitor or not the streams of this channel meaning this indicates if the
301 * streams should be sent to the data/metadata thread or added to the no
302 * monitor list of the channel.
303 */
304 unsigned int monitor;
305 /*
306 * Indicate if the stream is globally visible meaning that it has been
307 * added to the multiple hash tables. If *not* set, NO lock should be
308 * acquired in the destroy path.
309 */
310 unsigned int globally_visible;
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311 /*
312 * Pipe to wake up the metadata poll thread when the UST metadata
313 * cache is updated.
314 */
315 int ust_metadata_poll_pipe[2];
316 /*
317 * How much metadata was read from the metadata cache and sent
318 * to the channel.
319 */
320 uint64_t ust_metadata_pushed;
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321};
322
323/*
324 * Internal representation of a relayd socket pair.
325 */
326struct consumer_relayd_sock_pair {
327 /* Network sequence number. */
da009f2c 328 uint64_t net_seq_idx;
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329 /* Number of stream associated with this relayd */
330 unsigned int refcount;
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331
332 /*
333 * This flag indicates whether or not we should destroy this object. The
334 * destruction should ONLY occurs when this flag is set and the refcount is
335 * set to zero.
336 */
337 unsigned int destroy_flag;
338
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339 /*
340 * Mutex protecting the control socket to avoid out of order packets
341 * between threads sending data to the relayd. Since metadata data is sent
342 * over that socket, at least two sendmsg() are needed (header + data)
343 * creating a race for packets to overlap between threads using it.
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344 *
345 * This is nested INSIDE the consumer_data lock.
346 * This is nested INSIDE the stream lock.
51d7db73 347 */
00e2e675 348 pthread_mutex_t ctrl_sock_mutex;
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349
350 /* Control socket. Command and metadata are passed over it */
6151a90f 351 struct lttcomm_relayd_sock control_sock;
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352
353 /*
354 * We don't need a mutex at this point since we only splice or write single
355 * large chunk of data with a header appended at the begining. Moreover,
356 * this socket is for now only used in a single thread.
357 */
6151a90f 358 struct lttcomm_relayd_sock data_sock;
d88aee68 359 struct lttng_ht_node_u64 node;
c5b6f4f0 360
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361 /* Session id on both sides for the sockets. */
362 uint64_t relayd_session_id;
363 uint64_t sessiond_session_id;
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364};
365
366/*
367 * UST consumer local data to the program. One or more instance per
368 * process.
369 */
370struct lttng_consumer_local_data {
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371 /*
372 * Function to call when data is available on a buffer.
373 * Returns the number of bytes read, or negative error value.
374 */
375 ssize_t (*on_buffer_ready)(struct lttng_consumer_stream *stream,
d41f73b7 376 struct lttng_consumer_local_data *ctx);
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377 /*
378 * function to call when we receive a new channel, it receives a
379 * newly allocated channel, depending on the return code of this
380 * function, the new channel will be handled by the application
381 * or the library.
382 *
383 * Returns:
384 * > 0 (success, FD is kept by application)
385 * == 0 (success, FD is left to library)
386 * < 0 (error)
387 */
388 int (*on_recv_channel)(struct lttng_consumer_channel *channel);
389 /*
390 * function to call when we receive a new stream, it receives a
391 * newly allocated stream, depending on the return code of this
392 * function, the new stream will be handled by the application
393 * or the library.
394 *
395 * Returns:
396 * > 0 (success, FD is kept by application)
397 * == 0 (success, FD is left to library)
398 * < 0 (error)
399 */
400 int (*on_recv_stream)(struct lttng_consumer_stream *stream);
401 /*
402 * function to call when a stream is getting updated by the session
403 * daemon, this function receives the sessiond key and the new
404 * state, depending on the return code of this function the
405 * update of state for the stream is handled by the application
406 * or the library.
407 *
408 * Returns:
409 * > 0 (success, FD is kept by application)
410 * == 0 (success, FD is left to library)
411 * < 0 (error)
412 */
30319bcb 413 int (*on_update_stream)(uint64_t sessiond_key, uint32_t state);
331744e3 414 enum lttng_consumer_type type;
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415 /* socket to communicate errors with sessiond */
416 int consumer_error_socket;
75d83e50 417 /* socket to ask metadata to sessiond. */
331744e3 418 int consumer_metadata_socket;
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419 /*
420 * Protect consumer_metadata_socket.
421 *
422 * This is nested OUTSIDE the metadata cache lock.
423 */
75d83e50 424 pthread_mutex_t metadata_socket_lock;
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425 /* socket to exchange commands with sessiond */
426 char *consumer_command_sock_path;
427 /* communication with splice */
428 int consumer_thread_pipe[2];
d8ef542d 429 int consumer_channel_pipe[2];
fb3a43a9 430 int consumer_splice_metadata_pipe[2];
50f8ae69 431 /* Data stream poll thread pipe. To transfer data stream to the thread */
acdb9057 432 struct lttng_pipe *consumer_data_pipe;
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433 /* to let the signal handler wake up the fd receiver thread */
434 int consumer_should_quit[2];
fb3a43a9 435 /* Metadata poll thread pipe. Transfer metadata stream to it */
13886d2d 436 struct lttng_pipe *consumer_metadata_pipe;
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437};
438
439/*
440 * Library-level data. One instance per process.
441 */
442struct lttng_consumer_global_data {
443 /*
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444 * At this time, this lock is used to ensure coherence between the count
445 * and number of element in the hash table. It's also a protection for
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446 * concurrent read/write between threads.
447 *
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448 * This is nested OUTSIDE the stream lock.
449 * This is nested OUTSIDE the consumer_relayd_sock_pair lock.
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450 */
451 pthread_mutex_t lock;
e4421fec 452
3bd1e081 453 /*
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454 * Number of streams in the data stream hash table declared outside.
455 * Protected by consumer_data.lock.
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456 */
457 int stream_count;
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458
459 /* Channel hash table protected by consumer_data.lock. */
e4421fec 460 struct lttng_ht *channel_ht;
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461 /*
462 * Flag specifying if the local array of FDs needs update in the
463 * poll function. Protected by consumer_data.lock.
464 */
465 unsigned int need_update;
466 enum lttng_consumer_type type;
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467
468 /*
469 * Relayd socket(s) hashtable indexed by network sequence number. Each
470 * stream has an index which associate the right relayd socket to use.
471 */
472 struct lttng_ht *relayd_ht;
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473
474 /*
475 * This hash table contains all streams (metadata and data) indexed by
476 * session id. In other words, the ht is indexed by session id and each
477 * bucket contains the list of associated streams.
478 *
479 * This HT uses the "node_session_id" of the consumer stream.
480 */
481 struct lttng_ht *stream_list_ht;
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482
483 /*
484 * This HT uses the "node_channel_id" of the consumer stream.
485 */
486 struct lttng_ht *stream_per_chan_id_ht;
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487};
488
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489/*
490 * Init consumer data structures.
491 */
ffe60014 492void lttng_consumer_init(void);
e4421fec 493
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494/*
495 * Set the error socket for communication with a session daemon.
496 */
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497void lttng_consumer_set_error_sock(struct lttng_consumer_local_data *ctx,
498 int sock);
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499
500/*
501 * Set the command socket path for communication with a session daemon.
502 */
ffe60014 503void lttng_consumer_set_command_sock_path(
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504 struct lttng_consumer_local_data *ctx, char *sock);
505
506/*
507 * Send return code to session daemon.
508 *
509 * Returns the return code of sendmsg : the number of bytes transmitted or -1
510 * on error.
511 */
ffe60014 512int lttng_consumer_send_error(struct lttng_consumer_local_data *ctx, int cmd);
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513
514/*
515 * Called from signal handler to ensure a clean exit.
516 */
ffe60014 517void lttng_consumer_should_exit(struct lttng_consumer_local_data *ctx);
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518
519/*
520 * Cleanup the daemon's socket on exit.
521 */
ffe60014 522void lttng_consumer_cleanup(void);
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523
524/*
525 * Flush pending writes to trace output disk file.
526 */
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527void lttng_consumer_sync_trace_file(struct lttng_consumer_stream *stream,
528 off_t orig_offset);
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529
530/*
531 * Poll on the should_quit pipe and the command socket return -1 on error and
532 * should exit, 0 if data is available on the command socket
533 */
ffe60014 534int lttng_consumer_poll_socket(struct pollfd *kconsumer_sockpoll);
3bd1e081 535
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536struct lttng_consumer_stream *consumer_allocate_stream(uint64_t channel_key,
537 uint64_t stream_key,
3bd1e081 538 enum lttng_consumer_stream_state state,
ffe60014 539 const char *channel_name,
6df2e2c9 540 uid_t uid,
00e2e675 541 gid_t gid,
57a269f2 542 uint64_t relayd_id,
53632229 543 uint64_t session_id,
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544 int cpu,
545 int *alloc_ret,
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546 enum consumer_channel_type type,
547 unsigned int monitor);
d88aee68 548struct lttng_consumer_channel *consumer_allocate_channel(uint64_t key,
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549 uint64_t session_id,
550 const char *pathname,
551 const char *name,
552 uid_t uid,
553 gid_t gid,
57a269f2 554 uint64_t relayd_id,
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555 enum lttng_event_output output,
556 uint64_t tracefile_size,
2bba9e53 557 uint64_t tracefile_count,
1950109e 558 uint64_t session_id_per_pid,
2bba9e53 559 unsigned int monitor);
ffe60014 560void consumer_del_stream(struct lttng_consumer_stream *stream,
e316aad5 561 struct lttng_ht *ht);
ffe60014 562void consumer_del_metadata_stream(struct lttng_consumer_stream *stream,
e316aad5 563 struct lttng_ht *ht);
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564int consumer_add_channel(struct lttng_consumer_channel *channel,
565 struct lttng_consumer_local_data *ctx);
ffe60014 566void consumer_del_channel(struct lttng_consumer_channel *channel);
3bd1e081 567
00e2e675 568/* lttng-relayd consumer command */
00e2e675 569struct consumer_relayd_sock_pair *consumer_allocate_relayd_sock_pair(
da009f2c 570 uint64_t net_seq_idx);
d88aee68 571struct consumer_relayd_sock_pair *consumer_find_relayd(uint64_t key);
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572int consumer_send_relayd_stream(struct lttng_consumer_stream *stream, char *path);
573void close_relayd_stream(struct lttng_consumer_stream *stream);
d88aee68 574struct lttng_consumer_channel *consumer_find_channel(uint64_t key);
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575int consumer_handle_stream_before_relayd(struct lttng_consumer_stream *stream,
576 size_t data_size);
c869f647 577void consumer_steal_stream_key(int key, struct lttng_ht *ht);
00e2e675 578
ffe60014 579struct lttng_consumer_local_data *lttng_consumer_create(
3bd1e081 580 enum lttng_consumer_type type,
4078b776 581 ssize_t (*buffer_ready)(struct lttng_consumer_stream *stream,
d41f73b7 582 struct lttng_consumer_local_data *ctx),
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583 int (*recv_channel)(struct lttng_consumer_channel *channel),
584 int (*recv_stream)(struct lttng_consumer_stream *stream),
30319bcb 585 int (*update_stream)(uint64_t sessiond_key, uint32_t state));
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586void lttng_consumer_destroy(struct lttng_consumer_local_data *ctx);
587ssize_t lttng_consumer_on_read_subbuffer_mmap(
3bd1e081 588 struct lttng_consumer_local_data *ctx,
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589 struct lttng_consumer_stream *stream, unsigned long len,
590 unsigned long padding);
ffe60014 591ssize_t lttng_consumer_on_read_subbuffer_splice(
3bd1e081 592 struct lttng_consumer_local_data *ctx,
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593 struct lttng_consumer_stream *stream, unsigned long len,
594 unsigned long padding);
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595int lttng_consumer_take_snapshot(struct lttng_consumer_stream *stream);
596int lttng_consumer_get_produced_snapshot(struct lttng_consumer_stream *stream,
3bd1e081 597 unsigned long *pos);
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598void *consumer_thread_metadata_poll(void *data);
599void *consumer_thread_data_poll(void *data);
600void *consumer_thread_sessiond_poll(void *data);
d8ef542d 601void *consumer_thread_channel_poll(void *data);
ffe60014 602int lttng_consumer_recv_cmd(struct lttng_consumer_local_data *ctx,
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603 int sock, struct pollfd *consumer_sockpoll);
604
4078b776 605ssize_t lttng_consumer_read_subbuffer(struct lttng_consumer_stream *stream,
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606 struct lttng_consumer_local_data *ctx);
607int lttng_consumer_on_recv_stream(struct lttng_consumer_stream *stream);
da009f2c 608int consumer_add_relayd_socket(uint64_t net_seq_idx, int sock_type,
7735ef9e 609 struct lttng_consumer_local_data *ctx, int sock,
6151a90f 610 struct pollfd *consumer_sockpoll, struct lttcomm_relayd_sock *relayd_sock,
30319bcb 611 uint64_t sessiond_id);
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612void consumer_flag_relayd_for_destroy(
613 struct consumer_relayd_sock_pair *relayd);
6d805429 614int consumer_data_pending(uint64_t id);
f50f23d9 615int consumer_send_status_msg(int sock, int ret_code);
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616int consumer_send_status_channel(int sock,
617 struct lttng_consumer_channel *channel);
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618void notify_thread_del_channel(struct lttng_consumer_local_data *ctx,
619 uint64_t key);
51230d70 620void consumer_destroy_relayd(struct consumer_relayd_sock_pair *relayd);
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621unsigned long consumer_get_consumed_maxsize(unsigned long consumed_pos,
622 unsigned long produced_pos, uint64_t max_stream_size);
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623int consumer_add_data_stream(struct lttng_consumer_stream *stream);
624void consumer_del_stream_for_data(struct lttng_consumer_stream *stream);
625int consumer_add_metadata_stream(struct lttng_consumer_stream *stream);
626void consumer_del_stream_for_metadata(struct lttng_consumer_stream *stream);
d41f73b7 627
f02e1e8a 628#endif /* LIB_CONSUMER_H */
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