Cleanup: consumerd: lines over 80 columns
[lttng-tools.git] / src / common / consumer.h
CommitLineData
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>
50adc264 35#include <common/index/ctf-index.h>
3bd1e081 36
3bd1e081
MD
37/* Commands for consumer */
38enum lttng_consumer_command {
39 LTTNG_CONSUMER_ADD_CHANNEL,
40 LTTNG_CONSUMER_ADD_STREAM,
41 /* pause, delete, active depending on fd state */
42 LTTNG_CONSUMER_UPDATE_STREAM,
43 /* inform the consumer to quit when all fd has hang up */
84382d49 44 LTTNG_CONSUMER_STOP, /* deprecated */
00e2e675 45 LTTNG_CONSUMER_ADD_RELAYD_SOCKET,
173af62f
DG
46 /* Inform the consumer to kill a specific relayd connection */
47 LTTNG_CONSUMER_DESTROY_RELAYD,
53632229 48 /* Return to the sessiond if there is data pending for a session */
6d805429 49 LTTNG_CONSUMER_DATA_PENDING,
ffe60014
DG
50 /* Consumer creates a channel and returns it to sessiond. */
51 LTTNG_CONSUMER_ASK_CHANNEL_CREATION,
52 LTTNG_CONSUMER_GET_CHANNEL,
53 LTTNG_CONSUMER_DESTROY_CHANNEL,
d88aee68
DG
54 LTTNG_CONSUMER_PUSH_METADATA,
55 LTTNG_CONSUMER_CLOSE_METADATA,
56 LTTNG_CONSUMER_SETUP_METADATA,
7972aab2 57 LTTNG_CONSUMER_FLUSH_CHANNEL,
6dc3064a
DG
58 LTTNG_CONSUMER_SNAPSHOT_CHANNEL,
59 LTTNG_CONSUMER_SNAPSHOT_METADATA,
a4baae1b 60 LTTNG_CONSUMER_STREAMS_SENT,
3bd1e081
MD
61};
62
63/* State of each fd in consumer */
64enum lttng_consumer_stream_state {
65 LTTNG_CONSUMER_ACTIVE_STREAM,
66 LTTNG_CONSUMER_PAUSE_STREAM,
67 LTTNG_CONSUMER_DELETE_STREAM,
68};
69
3bd1e081
MD
70enum lttng_consumer_type {
71 LTTNG_CONSUMER_UNKNOWN = 0,
72 LTTNG_CONSUMER_KERNEL,
7753dea8
MD
73 LTTNG_CONSUMER64_UST,
74 LTTNG_CONSUMER32_UST,
3bd1e081
MD
75};
76
8994307f
DG
77enum consumer_endpoint_status {
78 CONSUMER_ENDPOINT_ACTIVE,
79 CONSUMER_ENDPOINT_INACTIVE,
80};
81
ffe60014
DG
82enum consumer_channel_output {
83 CONSUMER_CHANNEL_MMAP = 0,
84 CONSUMER_CHANNEL_SPLICE = 1,
85};
86
87enum consumer_channel_type {
88 CONSUMER_CHANNEL_TYPE_METADATA = 0,
d88aee68 89 CONSUMER_CHANNEL_TYPE_DATA = 1,
ffe60014
DG
90};
91
51230d70
DG
92extern struct lttng_consumer_global_data consumer_data;
93
ffe60014
DG
94struct stream_list {
95 struct cds_list_head head;
96 unsigned int count;
97};
98
331744e3
JD
99/* Stub. */
100struct consumer_metadata_cache;
101
3bd1e081 102struct lttng_consumer_channel {
ffe60014 103 /* HT node used for consumer_data.channel_ht */
d88aee68 104 struct lttng_ht_node_u64 node;
ffe60014 105 /* Indexed key. Incremented value in the consumer. */
d88aee68 106 uint64_t key;
ffe60014
DG
107 /* Number of streams referencing this channel */
108 int refcount;
109 /* Tracing session id on the session daemon side. */
110 uint64_t session_id;
1950109e
JD
111 /*
112 * Session id when requesting metadata to the session daemon for
113 * a session with per-PID buffers.
114 */
115 uint64_t session_id_per_pid;
ffe60014
DG
116 /* Channel trace file path name. */
117 char pathname[PATH_MAX];
118 /* Channel name. */
119 char name[LTTNG_SYMBOL_NAME_LEN];
567eb353 120 /* UID and GID of the session owning this channel. */
ffe60014
DG
121 uid_t uid;
122 gid_t gid;
da009f2c
MD
123 /* Relayd id of the channel. -1ULL if it does not apply. */
124 uint64_t relayd_id;
c30aaa51 125 /*
ffe60014
DG
126 * Number of streams NOT initialized yet. This is used in order to not
127 * delete this channel if streams are getting initialized.
c30aaa51 128 */
ffe60014
DG
129 unsigned int nb_init_stream_left;
130 /* Output type (mmap or splice). */
131 enum consumer_channel_output output;
132 /* Channel type for stream */
133 enum consumer_channel_type type;
c30aaa51 134
3bd1e081 135 /* For UST */
567eb353 136 uid_t ust_app_uid; /* Application UID. */
ffe60014
DG
137 struct ustctl_consumer_channel *uchan;
138 unsigned char uuid[UUID_STR_LEN];
139 /*
140 * Temporary stream list used to store the streams once created and waiting
141 * to be sent to the session daemon by receiving the
142 * LTTNG_CONSUMER_GET_CHANNEL.
143 */
144 struct stream_list streams;
07b86b52 145
d88aee68
DG
146 /*
147 * Set if the channel is metadata. We keep a reference to the stream
148 * because we have to flush data once pushed by the session daemon. For a
149 * regular channel, this is always set to NULL.
150 */
151 struct lttng_consumer_stream *metadata_stream;
d8ef542d
MD
152
153 /* for UST */
154 int wait_fd;
155 /* Node within channel thread ht */
156 struct lttng_ht_node_u64 wait_fd_node;
331744e3
JD
157
158 /* Metadata cache is metadata channel */
159 struct consumer_metadata_cache *metadata_cache;
d3e2ba59 160 /* For UST metadata periodical flush */
331744e3
JD
161 int switch_timer_enabled;
162 timer_t switch_timer;
4419b4fb
MD
163 int switch_timer_error;
164
d3e2ba59
JD
165 /* For the live mode */
166 int live_timer_enabled;
167 timer_t live_timer;
168 int live_timer_error;
169
1624d5b7
JD
170 /* On-disk circular buffer */
171 uint64_t tracefile_size;
172 uint64_t tracefile_count;
2bba9e53
DG
173 /*
174 * Monitor or not the streams of this channel meaning this indicates if the
175 * streams should be sent to the data/metadata thread or added to the no
176 * monitor list of the channel.
177 */
178 unsigned int monitor;
a9838785
MD
179
180 /*
181 * Channel lock.
182 *
ec6ea7d0
MD
183 * This lock protects against concurrent update of channel.
184 *
a9838785 185 * This is nested INSIDE the consumer data lock.
ec6ea7d0 186 * This is nested OUTSIDE the channel timer lock.
a9838785
MD
187 * This is nested OUTSIDE the metadata cache lock.
188 * This is nested OUTSIDE stream lock.
189 * This is nested OUTSIDE consumer_relayd_sock_pair lock.
190 */
191 pthread_mutex_t lock;
ec6ea7d0
MD
192
193 /*
194 * Channel teardown lock.
195 *
196 * This lock protect against teardown of channel. It is _never_
197 * taken by the timer handler.
198 *
199 * This is nested INSIDE the consumer data lock.
200 * This is nested INSIDE the channel lock.
201 * This is nested OUTSIDE the metadata cache lock.
202 * This is nested OUTSIDE stream lock.
203 * This is nested OUTSIDE consumer_relayd_sock_pair lock.
204 */
205 pthread_mutex_t timer_lock;
ecc48a90
JD
206
207 /* Timer value in usec for live streaming. */
208 unsigned int live_timer_interval;
3bd1e081
MD
209};
210
3bd1e081
MD
211/*
212 * Internal representation of the streams, sessiond_key is used to identify
213 * uniquely a stream.
214 */
215struct lttng_consumer_stream {
53632229 216 /* HT node used by the data_ht and metadata_ht */
d88aee68 217 struct lttng_ht_node_u64 node;
d8ef542d
MD
218 /* stream indexed per channel key node */
219 struct lttng_ht_node_u64 node_channel_id;
53632229 220 /* HT node used in consumer_data.stream_list_ht */
d88aee68 221 struct lttng_ht_node_u64 node_session_id;
ffe60014
DG
222 /* Pointer to associated channel. */
223 struct lttng_consumer_channel *chan;
224
225 /* Key by which the stream is indexed for 'node'. */
d88aee68 226 uint64_t key;
3bd1e081 227 /*
ffe60014
DG
228 * File descriptor of the data output file. This can be either a file or a
229 * socket fd for relayd streaming.
3bd1e081 230 */
3bd1e081 231 int out_fd; /* output file to write the data */
ffe60014
DG
232 /* Write position in the output file descriptor */
233 off_t out_fd_offset;
e5d1a9b3
MD
234 /* Amount of bytes written to the output */
235 uint64_t output_written;
3bd1e081 236 enum lttng_consumer_stream_state state;
b5c5fc29 237 int shm_fd_is_copy;
4078b776 238 int data_read;
d056b477 239 int hangup_flush_done;
ffe60014
DG
240 enum lttng_event_output output;
241 /* Maximum subbuffer size. */
242 unsigned long max_sb_size;
243
244 /*
245 * Still used by the kernel for MMAP output. For UST, the ustctl getter is
246 * used for the mmap base and offset.
247 */
248 void *mmap_base;
249 unsigned long mmap_len;
250
251 /* For UST */
252
253 int wait_fd;
6df2e2c9
MD
254 /* UID/GID of the user owning the session to which stream belongs */
255 uid_t uid;
256 gid_t gid;
00e2e675 257 /* Network sequence number. Indicating on which relayd socket it goes. */
d88aee68 258 uint64_t net_seq_idx;
d01178b6
DG
259 /*
260 * Indicate if this stream was successfully sent to a relayd. This is set
261 * after the refcount of the relayd is incremented and is checked when the
262 * stream is closed before decrementing the refcount in order to avoid an
263 * unbalanced state.
264 */
265 unsigned int sent_to_relayd;
266
00e2e675
DG
267 /* Identify if the stream is the metadata */
268 unsigned int metadata_flag;
269 /* Used when the stream is set for network streaming */
270 uint64_t relayd_stream_id;
3604f373
DG
271 /*
272 * When sending a stream packet to a relayd, this number is used to track
273 * the packet sent by the consumer and seen by the relayd. When sending the
274 * data header to the relayd, this number is sent and if the transmission
275 * was successful, it is incremented.
276 *
277 * Even if the full data is not fully transmitted it won't matter since
278 * only two possible error can happen after that where either the relayd
279 * died or a read error is detected on the stream making this value useless
280 * after that.
281 *
282 * This value SHOULD be read/updated atomically or with the lock acquired.
283 */
173af62f 284 uint64_t next_net_seq_num;
63281d5d 285 /*
74251bb8
DG
286 * Lock to use the stream FDs since they are used between threads.
287 *
288 * This is nested INSIDE the consumer_data lock.
73811ecc 289 * This is nested INSIDE the metadata cache lock.
a9838785 290 * This is nested INSIDE the channel lock.
ec6ea7d0 291 * This is nested INSIDE the channel timer lock.
74251bb8 292 * This is nested OUTSIDE consumer_relayd_sock_pair lock.
63281d5d 293 */
53632229
DG
294 pthread_mutex_t lock;
295 /* Tracing session id */
296 uint64_t session_id;
8994307f
DG
297 /*
298 * Indicates if the stream end point is still active or not (network
299 * streaming or local file system). The thread "owning" the stream is
300 * handling this status and can be notified of a state change through the
301 * consumer data appropriate pipe.
302 */
303 enum consumer_endpoint_status endpoint_status;
ffe60014
DG
304 /* Stream name. Format is: <channel_name>_<cpu_number> */
305 char name[LTTNG_SYMBOL_NAME_LEN];
306 /* Internal state of libustctl. */
307 struct ustctl_consumer_stream *ustream;
308 struct cds_list_head send_node;
1624d5b7
JD
309 /* On-disk circular buffer */
310 uint64_t tracefile_size_current;
311 uint64_t tracefile_count_current;
4891ece8
DG
312 /*
313 * Monitor or not the streams of this channel meaning this indicates if the
314 * streams should be sent to the data/metadata thread or added to the no
315 * monitor list of the channel.
316 */
317 unsigned int monitor;
318 /*
319 * Indicate if the stream is globally visible meaning that it has been
320 * added to the multiple hash tables. If *not* set, NO lock should be
321 * acquired in the destroy path.
322 */
323 unsigned int globally_visible;
feb78e88
MD
324 /*
325 * Pipe to wake up the metadata poll thread when the UST metadata
326 * cache is updated.
327 */
328 int ust_metadata_poll_pipe[2];
329 /*
330 * How much metadata was read from the metadata cache and sent
331 * to the channel.
332 */
333 uint64_t ust_metadata_pushed;
309167d2
JD
334 /*
335 * FD of the index file for this stream.
336 */
337 int index_fd;
94d49140 338
a2361a61
JD
339 /*
340 * Local pipe to extract data when using splice.
341 */
342 int splice_pipe[2];
343
94d49140
JD
344 /*
345 * Rendez-vous point between data and metadata stream in live mode.
346 */
347 pthread_cond_t metadata_rdv;
348 pthread_mutex_t metadata_rdv_lock;
02b3d176
DG
349
350 /* Indicate if the stream still has some data to be read. */
351 unsigned int has_data:1;
00e2e675
DG
352};
353
354/*
355 * Internal representation of a relayd socket pair.
356 */
357struct consumer_relayd_sock_pair {
358 /* Network sequence number. */
da009f2c 359 uint64_t net_seq_idx;
00e2e675
DG
360 /* Number of stream associated with this relayd */
361 unsigned int refcount;
173af62f
DG
362
363 /*
364 * This flag indicates whether or not we should destroy this object. The
365 * destruction should ONLY occurs when this flag is set and the refcount is
366 * set to zero.
367 */
368 unsigned int destroy_flag;
369
51d7db73
DG
370 /*
371 * Mutex protecting the control socket to avoid out of order packets
372 * between threads sending data to the relayd. Since metadata data is sent
373 * over that socket, at least two sendmsg() are needed (header + data)
374 * creating a race for packets to overlap between threads using it.
74251bb8
DG
375 *
376 * This is nested INSIDE the consumer_data lock.
377 * This is nested INSIDE the stream lock.
51d7db73 378 */
00e2e675 379 pthread_mutex_t ctrl_sock_mutex;
51d7db73
DG
380
381 /* Control socket. Command and metadata are passed over it */
6151a90f 382 struct lttcomm_relayd_sock control_sock;
51d7db73
DG
383
384 /*
385 * We don't need a mutex at this point since we only splice or write single
386 * large chunk of data with a header appended at the begining. Moreover,
387 * this socket is for now only used in a single thread.
388 */
6151a90f 389 struct lttcomm_relayd_sock data_sock;
d88aee68 390 struct lttng_ht_node_u64 node;
c5b6f4f0 391
f7079f67
DG
392 /* Session id on both sides for the sockets. */
393 uint64_t relayd_session_id;
394 uint64_t sessiond_session_id;
3bd1e081
MD
395};
396
397/*
398 * UST consumer local data to the program. One or more instance per
399 * process.
400 */
401struct lttng_consumer_local_data {
4078b776
MD
402 /*
403 * Function to call when data is available on a buffer.
404 * Returns the number of bytes read, or negative error value.
405 */
406 ssize_t (*on_buffer_ready)(struct lttng_consumer_stream *stream,
d41f73b7 407 struct lttng_consumer_local_data *ctx);
3bd1e081
MD
408 /*
409 * function to call when we receive a new channel, it receives a
410 * newly allocated channel, depending on the return code of this
411 * function, the new channel will be handled by the application
412 * or the library.
413 *
414 * Returns:
415 * > 0 (success, FD is kept by application)
416 * == 0 (success, FD is left to library)
417 * < 0 (error)
418 */
419 int (*on_recv_channel)(struct lttng_consumer_channel *channel);
420 /*
421 * function to call when we receive a new stream, it receives a
422 * newly allocated stream, depending on the return code of this
423 * function, the new stream will be handled by the application
424 * or the library.
425 *
426 * Returns:
427 * > 0 (success, FD is kept by application)
428 * == 0 (success, FD is left to library)
429 * < 0 (error)
430 */
431 int (*on_recv_stream)(struct lttng_consumer_stream *stream);
432 /*
433 * function to call when a stream is getting updated by the session
434 * daemon, this function receives the sessiond key and the new
435 * state, depending on the return code of this function the
436 * update of state for the stream is handled by the application
437 * or the library.
438 *
439 * Returns:
440 * > 0 (success, FD is kept by application)
441 * == 0 (success, FD is left to library)
442 * < 0 (error)
443 */
30319bcb 444 int (*on_update_stream)(uint64_t sessiond_key, uint32_t state);
331744e3 445 enum lttng_consumer_type type;
3bd1e081
MD
446 /* socket to communicate errors with sessiond */
447 int consumer_error_socket;
75d83e50 448 /* socket to ask metadata to sessiond. */
331744e3 449 int consumer_metadata_socket;
ace17efa
MD
450 /*
451 * Protect consumer_metadata_socket.
452 *
453 * This is nested OUTSIDE the metadata cache lock.
454 */
75d83e50 455 pthread_mutex_t metadata_socket_lock;
3bd1e081
MD
456 /* socket to exchange commands with sessiond */
457 char *consumer_command_sock_path;
458 /* communication with splice */
d8ef542d 459 int consumer_channel_pipe[2];
50f8ae69 460 /* Data stream poll thread pipe. To transfer data stream to the thread */
acdb9057 461 struct lttng_pipe *consumer_data_pipe;
02b3d176
DG
462
463 /*
464 * Data thread use that pipe to catch wakeup from read subbuffer that
465 * detects that there is still data to be read for the stream encountered.
466 * Before doing so, the stream is flagged to indicate that there is still
467 * data to be read.
468 *
469 * Both pipes (read/write) are owned and used inside the data thread.
470 */
471 struct lttng_pipe *consumer_wakeup_pipe;
472 /* Indicate if the wakeup thread has been notified. */
473 unsigned int has_wakeup:1;
474
3bd1e081
MD
475 /* to let the signal handler wake up the fd receiver thread */
476 int consumer_should_quit[2];
fb3a43a9 477 /* Metadata poll thread pipe. Transfer metadata stream to it */
13886d2d 478 struct lttng_pipe *consumer_metadata_pipe;
3bd1e081
MD
479};
480
481/*
482 * Library-level data. One instance per process.
483 */
484struct lttng_consumer_global_data {
485 /*
e4421fec
DG
486 * At this time, this lock is used to ensure coherence between the count
487 * and number of element in the hash table. It's also a protection for
6065ceec
DG
488 * concurrent read/write between threads.
489 *
74251bb8
DG
490 * This is nested OUTSIDE the stream lock.
491 * This is nested OUTSIDE the consumer_relayd_sock_pair lock.
3bd1e081
MD
492 */
493 pthread_mutex_t lock;
e4421fec 494
3bd1e081 495 /*
3cc2f24a
DG
496 * Number of streams in the data stream hash table declared outside.
497 * Protected by consumer_data.lock.
3bd1e081
MD
498 */
499 int stream_count;
3cc2f24a
DG
500
501 /* Channel hash table protected by consumer_data.lock. */
e4421fec 502 struct lttng_ht *channel_ht;
3bd1e081
MD
503 /*
504 * Flag specifying if the local array of FDs needs update in the
505 * poll function. Protected by consumer_data.lock.
506 */
507 unsigned int need_update;
508 enum lttng_consumer_type type;
00e2e675
DG
509
510 /*
511 * Relayd socket(s) hashtable indexed by network sequence number. Each
512 * stream has an index which associate the right relayd socket to use.
513 */
514 struct lttng_ht *relayd_ht;
53632229
DG
515
516 /*
517 * This hash table contains all streams (metadata and data) indexed by
518 * session id. In other words, the ht is indexed by session id and each
519 * bucket contains the list of associated streams.
520 *
521 * This HT uses the "node_session_id" of the consumer stream.
522 */
523 struct lttng_ht *stream_list_ht;
d8ef542d
MD
524
525 /*
526 * This HT uses the "node_channel_id" of the consumer stream.
527 */
528 struct lttng_ht *stream_per_chan_id_ht;
3bd1e081
MD
529};
530
e4421fec
DG
531/*
532 * Init consumer data structures.
533 */
282dadbc 534int lttng_consumer_init(void);
e4421fec 535
3bd1e081
MD
536/*
537 * Set the error socket for communication with a session daemon.
538 */
ffe60014
DG
539void lttng_consumer_set_error_sock(struct lttng_consumer_local_data *ctx,
540 int sock);
3bd1e081
MD
541
542/*
543 * Set the command socket path for communication with a session daemon.
544 */
ffe60014 545void lttng_consumer_set_command_sock_path(
3bd1e081
MD
546 struct lttng_consumer_local_data *ctx, char *sock);
547
548/*
549 * Send return code to session daemon.
550 *
551 * Returns the return code of sendmsg : the number of bytes transmitted or -1
552 * on error.
553 */
ffe60014 554int lttng_consumer_send_error(struct lttng_consumer_local_data *ctx, int cmd);
3bd1e081
MD
555
556/*
557 * Called from signal handler to ensure a clean exit.
558 */
ffe60014 559void lttng_consumer_should_exit(struct lttng_consumer_local_data *ctx);
3bd1e081
MD
560
561/*
562 * Cleanup the daemon's socket on exit.
563 */
ffe60014 564void lttng_consumer_cleanup(void);
3bd1e081
MD
565
566/*
567 * Flush pending writes to trace output disk file.
568 */
ffe60014
DG
569void lttng_consumer_sync_trace_file(struct lttng_consumer_stream *stream,
570 off_t orig_offset);
3bd1e081
MD
571
572/*
573 * Poll on the should_quit pipe and the command socket return -1 on error and
574 * should exit, 0 if data is available on the command socket
575 */
ffe60014 576int lttng_consumer_poll_socket(struct pollfd *kconsumer_sockpoll);
3bd1e081 577
d88aee68
DG
578struct lttng_consumer_stream *consumer_allocate_stream(uint64_t channel_key,
579 uint64_t stream_key,
3bd1e081 580 enum lttng_consumer_stream_state state,
ffe60014 581 const char *channel_name,
6df2e2c9 582 uid_t uid,
00e2e675 583 gid_t gid,
57a269f2 584 uint64_t relayd_id,
53632229 585 uint64_t session_id,
ffe60014
DG
586 int cpu,
587 int *alloc_ret,
4891ece8
DG
588 enum consumer_channel_type type,
589 unsigned int monitor);
d88aee68 590struct lttng_consumer_channel *consumer_allocate_channel(uint64_t key,
ffe60014
DG
591 uint64_t session_id,
592 const char *pathname,
593 const char *name,
594 uid_t uid,
595 gid_t gid,
57a269f2 596 uint64_t relayd_id,
1624d5b7
JD
597 enum lttng_event_output output,
598 uint64_t tracefile_size,
2bba9e53 599 uint64_t tracefile_count,
1950109e 600 uint64_t session_id_per_pid,
ecc48a90
JD
601 unsigned int monitor,
602 unsigned int live_timer_interval);
ffe60014 603void consumer_del_stream(struct lttng_consumer_stream *stream,
e316aad5 604 struct lttng_ht *ht);
ffe60014 605void consumer_del_metadata_stream(struct lttng_consumer_stream *stream,
e316aad5 606 struct lttng_ht *ht);
d8ef542d
MD
607int consumer_add_channel(struct lttng_consumer_channel *channel,
608 struct lttng_consumer_local_data *ctx);
ffe60014 609void consumer_del_channel(struct lttng_consumer_channel *channel);
3bd1e081 610
00e2e675 611/* lttng-relayd consumer command */
00e2e675 612struct consumer_relayd_sock_pair *consumer_allocate_relayd_sock_pair(
da009f2c 613 uint64_t net_seq_idx);
d88aee68 614struct consumer_relayd_sock_pair *consumer_find_relayd(uint64_t key);
10a50311 615int consumer_send_relayd_stream(struct lttng_consumer_stream *stream, char *path);
a4baae1b 616int consumer_send_relayd_streams_sent(uint64_t net_seq_idx);
10a50311 617void close_relayd_stream(struct lttng_consumer_stream *stream);
d88aee68 618struct lttng_consumer_channel *consumer_find_channel(uint64_t key);
00e2e675
DG
619int consumer_handle_stream_before_relayd(struct lttng_consumer_stream *stream,
620 size_t data_size);
c869f647 621void consumer_steal_stream_key(int key, struct lttng_ht *ht);
00e2e675 622
ffe60014 623struct lttng_consumer_local_data *lttng_consumer_create(
3bd1e081 624 enum lttng_consumer_type type,
4078b776 625 ssize_t (*buffer_ready)(struct lttng_consumer_stream *stream,
d41f73b7 626 struct lttng_consumer_local_data *ctx),
3bd1e081
MD
627 int (*recv_channel)(struct lttng_consumer_channel *channel),
628 int (*recv_stream)(struct lttng_consumer_stream *stream),
30319bcb 629 int (*update_stream)(uint64_t sessiond_key, uint32_t state));
ffe60014
DG
630void lttng_consumer_destroy(struct lttng_consumer_local_data *ctx);
631ssize_t lttng_consumer_on_read_subbuffer_mmap(
3bd1e081 632 struct lttng_consumer_local_data *ctx,
1d4dfdef 633 struct lttng_consumer_stream *stream, unsigned long len,
309167d2 634 unsigned long padding,
50adc264 635 struct ctf_packet_index *index);
ffe60014 636ssize_t lttng_consumer_on_read_subbuffer_splice(
3bd1e081 637 struct lttng_consumer_local_data *ctx,
1d4dfdef 638 struct lttng_consumer_stream *stream, unsigned long len,
309167d2 639 unsigned long padding,
50adc264 640 struct ctf_packet_index *index);
ffe60014
DG
641int lttng_consumer_take_snapshot(struct lttng_consumer_stream *stream);
642int lttng_consumer_get_produced_snapshot(struct lttng_consumer_stream *stream,
3bd1e081 643 unsigned long *pos);
6d574024
DG
644int lttng_ustconsumer_get_wakeup_fd(struct lttng_consumer_stream *stream);
645int lttng_ustconsumer_close_wakeup_fd(struct lttng_consumer_stream *stream);
ffe60014
DG
646void *consumer_thread_metadata_poll(void *data);
647void *consumer_thread_data_poll(void *data);
648void *consumer_thread_sessiond_poll(void *data);
d8ef542d 649void *consumer_thread_channel_poll(void *data);
ffe60014 650int lttng_consumer_recv_cmd(struct lttng_consumer_local_data *ctx,
3bd1e081
MD
651 int sock, struct pollfd *consumer_sockpoll);
652
4078b776 653ssize_t lttng_consumer_read_subbuffer(struct lttng_consumer_stream *stream,
d41f73b7
MD
654 struct lttng_consumer_local_data *ctx);
655int lttng_consumer_on_recv_stream(struct lttng_consumer_stream *stream);
da009f2c 656int consumer_add_relayd_socket(uint64_t net_seq_idx, int sock_type,
7735ef9e 657 struct lttng_consumer_local_data *ctx, int sock,
6151a90f 658 struct pollfd *consumer_sockpoll, struct lttcomm_relayd_sock *relayd_sock,
d3e2ba59 659 uint64_t sessiond_id, uint64_t relayd_session_id);
a6ba4fe1
DG
660void consumer_flag_relayd_for_destroy(
661 struct consumer_relayd_sock_pair *relayd);
6d805429 662int consumer_data_pending(uint64_t id);
f50f23d9 663int consumer_send_status_msg(int sock, int ret_code);
ffe60014
DG
664int consumer_send_status_channel(int sock,
665 struct lttng_consumer_channel *channel);
a0cbdd2e
MD
666void notify_thread_del_channel(struct lttng_consumer_local_data *ctx,
667 uint64_t key);
51230d70 668void consumer_destroy_relayd(struct consumer_relayd_sock_pair *relayd);
5c786ded
JD
669unsigned long consumer_get_consumed_maxsize(unsigned long consumed_pos,
670 unsigned long produced_pos, uint64_t max_stream_size);
5ab66908
MD
671int consumer_add_data_stream(struct lttng_consumer_stream *stream);
672void consumer_del_stream_for_data(struct lttng_consumer_stream *stream);
673int consumer_add_metadata_stream(struct lttng_consumer_stream *stream);
674void consumer_del_stream_for_metadata(struct lttng_consumer_stream *stream);
309167d2 675int consumer_create_index_file(struct lttng_consumer_stream *stream);
d41f73b7 676
f02e1e8a 677#endif /* LIB_CONSUMER_H */
This page took 0.078584 seconds and 4 git commands to generate.