2 * Copyright (C) 2012 - David Goulet <dgoulet@efficios.com>
4 * This program is free software; you can redistribute it and/or modify it
5 * under the terms of the GNU General Public License, version 2 only, as
6 * published by the Free Software Foundation.
8 * This program is distributed in the hope that it will be useful, but WITHOUT
9 * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
10 * FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License for
13 * You should have received a copy of the GNU General Public License along with
14 * this program; if not, write to the Free Software Foundation, Inc., 51
15 * Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA.
24 #include <sys/types.h>
28 #include <common/common.h>
29 #include <common/defaults.h>
30 #include <common/uri.h>
38 * Receive a reply command status message from the consumer. Consumer socket
39 * lock MUST be acquired before calling this function.
41 * Return 0 on success, -1 on recv error or a negative lttng error code which
42 * was possibly returned by the consumer.
44 int consumer_recv_status_reply(struct consumer_socket
*sock
)
47 struct lttcomm_consumer_status_msg reply
;
51 ret
= lttcomm_recv_unix_sock(sock
->fd
, &reply
, sizeof(reply
));
54 /* Orderly shutdown. Don't return 0 which means success. */
57 /* The above call will print a PERROR on error. */
58 DBG("Fail to receive status reply on sock %d", sock
->fd
);
62 if (reply
.ret_code
== LTTNG_OK
) {
66 ret
= -reply
.ret_code
;
67 DBG("Consumer ret code %d", ret
);
75 * Once the ASK_CHANNEL command is sent to the consumer, the channel
76 * information are sent back. This call receives that data and populates key
79 * On success return 0 and both key and stream_count are set. On error, a
80 * negative value is sent back and both parameters are untouched.
82 int consumer_recv_status_channel(struct consumer_socket
*sock
,
83 uint64_t *key
, unsigned int *stream_count
)
86 struct lttcomm_consumer_status_channel reply
;
92 ret
= lttcomm_recv_unix_sock(sock
->fd
, &reply
, sizeof(reply
));
95 /* Orderly shutdown. Don't return 0 which means success. */
98 /* The above call will print a PERROR on error. */
99 DBG("Fail to receive status reply on sock %d", sock
->fd
);
103 /* An error is possible so don't touch the key and stream_count. */
104 if (reply
.ret_code
!= LTTNG_OK
) {
110 *stream_count
= reply
.stream_count
;
117 * Send destroy relayd command to consumer.
119 * On success return positive value. On error, negative value.
121 int consumer_send_destroy_relayd(struct consumer_socket
*sock
,
122 struct consumer_output
*consumer
)
125 struct lttcomm_consumer_msg msg
;
130 DBG2("Sending destroy relayd command to consumer sock %d", sock
->fd
);
132 /* Bail out if consumer is disabled */
133 if (!consumer
->enabled
) {
135 DBG3("Consumer is disabled");
139 msg
.cmd_type
= LTTNG_CONSUMER_DESTROY_RELAYD
;
140 msg
.u
.destroy_relayd
.net_seq_idx
= consumer
->net_seq_index
;
142 pthread_mutex_lock(sock
->lock
);
143 ret
= lttcomm_send_unix_sock(sock
->fd
, &msg
, sizeof(msg
));
145 /* Indicate that the consumer is probably closing at this point. */
146 DBG("send consumer destroy relayd command");
150 /* Don't check the return value. The caller will do it. */
151 ret
= consumer_recv_status_reply(sock
);
153 DBG2("Consumer send destroy relayd command done");
156 pthread_mutex_unlock(sock
->lock
);
162 * For each consumer socket in the consumer output object, send a destroy
165 void consumer_output_send_destroy_relayd(struct consumer_output
*consumer
)
167 struct lttng_ht_iter iter
;
168 struct consumer_socket
*socket
;
172 /* Destroy any relayd connection */
173 if (consumer
&& consumer
->type
== CONSUMER_DST_NET
) {
175 cds_lfht_for_each_entry(consumer
->socks
->ht
, &iter
.iter
, socket
,
179 /* Send destroy relayd command */
180 ret
= consumer_send_destroy_relayd(socket
, consumer
);
182 DBG("Unable to send destroy relayd command to consumer");
183 /* Continue since we MUST delete everything at this point. */
191 * From a consumer_data structure, allocate and add a consumer socket to the
194 * Return 0 on success, else negative value on error
196 int consumer_create_socket(struct consumer_data
*data
,
197 struct consumer_output
*output
)
200 struct consumer_socket
*socket
;
204 if (output
== NULL
|| data
->cmd_sock
< 0) {
206 * Not an error. Possible there is simply not spawned consumer or it's
207 * disabled for the tracing session asking the socket.
213 socket
= consumer_find_socket(data
->cmd_sock
, output
);
215 if (socket
== NULL
) {
216 socket
= consumer_allocate_socket(data
->cmd_sock
);
217 if (socket
== NULL
) {
222 socket
->registered
= 0;
223 socket
->lock
= &data
->lock
;
225 consumer_add_socket(socket
, output
);
229 DBG3("Consumer socket created (fd: %d) and added to output",
237 * Return the consumer socket from the given consumer output with the right
238 * bitness. On error, returns NULL.
240 * The caller MUST acquire a rcu read side lock and keep it until the socket
241 * object reference is not needed anymore.
243 struct consumer_socket
*consumer_find_socket_by_bitness(int bits
,
244 struct consumer_output
*consumer
)
247 struct consumer_socket
*socket
= NULL
;
251 consumer_fd
= uatomic_read(&ust_consumerd64_fd
);
254 consumer_fd
= uatomic_read(&ust_consumerd32_fd
);
261 socket
= consumer_find_socket(consumer_fd
, consumer
);
263 ERR("Consumer socket fd %d not found in consumer obj %p",
264 consumer_fd
, consumer
);
272 * Find a consumer_socket in a consumer_output hashtable. Read side lock must
273 * be acquired before calling this function and across use of the
274 * returned consumer_socket.
276 struct consumer_socket
*consumer_find_socket(int key
,
277 struct consumer_output
*consumer
)
279 struct lttng_ht_iter iter
;
280 struct lttng_ht_node_ulong
*node
;
281 struct consumer_socket
*socket
= NULL
;
283 /* Negative keys are lookup failures */
284 if (key
< 0 || consumer
== NULL
) {
288 lttng_ht_lookup(consumer
->socks
, (void *)((unsigned long) key
),
290 node
= lttng_ht_iter_get_node_ulong(&iter
);
292 socket
= caa_container_of(node
, struct consumer_socket
, node
);
299 * Allocate a new consumer_socket and return the pointer.
301 struct consumer_socket
*consumer_allocate_socket(int fd
)
303 struct consumer_socket
*socket
= NULL
;
305 socket
= zmalloc(sizeof(struct consumer_socket
));
306 if (socket
== NULL
) {
307 PERROR("zmalloc consumer socket");
312 lttng_ht_node_init_ulong(&socket
->node
, fd
);
319 * Add consumer socket to consumer output object. Read side lock must be
320 * acquired before calling this function.
322 void consumer_add_socket(struct consumer_socket
*sock
,
323 struct consumer_output
*consumer
)
328 lttng_ht_add_unique_ulong(consumer
->socks
, &sock
->node
);
332 * Delte consumer socket to consumer output object. Read side lock must be
333 * acquired before calling this function.
335 void consumer_del_socket(struct consumer_socket
*sock
,
336 struct consumer_output
*consumer
)
339 struct lttng_ht_iter iter
;
344 iter
.iter
.node
= &sock
->node
.node
;
345 ret
= lttng_ht_del(consumer
->socks
, &iter
);
350 * RCU destroy call function.
352 static void destroy_socket_rcu(struct rcu_head
*head
)
354 struct lttng_ht_node_ulong
*node
=
355 caa_container_of(head
, struct lttng_ht_node_ulong
, head
);
356 struct consumer_socket
*socket
=
357 caa_container_of(node
, struct consumer_socket
, node
);
363 * Destroy and free socket pointer in a call RCU. Read side lock must be
364 * acquired before calling this function.
366 void consumer_destroy_socket(struct consumer_socket
*sock
)
371 * We DO NOT close the file descriptor here since it is global to the
372 * session daemon and is closed only if the consumer dies or a custom
373 * consumer was registered,
375 if (sock
->registered
) {
376 DBG3("Consumer socket was registered. Closing fd %d", sock
->fd
);
377 lttcomm_close_unix_sock(sock
->fd
);
380 call_rcu(&sock
->node
.head
, destroy_socket_rcu
);
384 * Allocate and assign data to a consumer_output object.
386 * Return pointer to structure.
388 struct consumer_output
*consumer_create_output(enum consumer_dst_type type
)
390 struct consumer_output
*output
= NULL
;
392 output
= zmalloc(sizeof(struct consumer_output
));
393 if (output
== NULL
) {
394 PERROR("zmalloc consumer_output");
398 /* By default, consumer output is enabled */
401 output
->net_seq_index
= (uint64_t) -1ULL;
403 output
->socks
= lttng_ht_new(0, LTTNG_HT_TYPE_ULONG
);
410 * Delete the consumer_output object from the list and free the ptr.
412 * Should *NOT* be called with RCU read-side lock held.
414 void consumer_destroy_output(struct consumer_output
*obj
)
421 struct lttng_ht_iter iter
;
422 struct consumer_socket
*socket
;
425 cds_lfht_for_each_entry(obj
->socks
->ht
, &iter
.iter
, socket
, node
.node
) {
426 consumer_del_socket(socket
, obj
);
427 consumer_destroy_socket(socket
);
431 /* Finally destroy HT */
432 ht_cleanup_push(obj
->socks
);
439 * Copy consumer output and returned the newly allocated copy.
441 * Should *NOT* be called with RCU read-side lock held.
443 struct consumer_output
*consumer_copy_output(struct consumer_output
*obj
)
445 struct lttng_ht
*tmp_ht_ptr
;
446 struct lttng_ht_iter iter
;
447 struct consumer_socket
*socket
, *copy_sock
;
448 struct consumer_output
*output
;
452 output
= consumer_create_output(obj
->type
);
453 if (output
== NULL
) {
456 /* Avoid losing the HT reference after the memcpy() */
457 tmp_ht_ptr
= output
->socks
;
459 memcpy(output
, obj
, sizeof(struct consumer_output
));
461 /* Putting back the HT pointer and start copying socket(s). */
462 output
->socks
= tmp_ht_ptr
;
465 cds_lfht_for_each_entry(obj
->socks
->ht
, &iter
.iter
, socket
, node
.node
) {
466 /* Create new socket object. */
467 copy_sock
= consumer_allocate_socket(socket
->fd
);
468 if (copy_sock
== NULL
) {
473 copy_sock
->registered
= socket
->registered
;
474 copy_sock
->lock
= socket
->lock
;
475 consumer_add_socket(copy_sock
, output
);
483 consumer_destroy_output(output
);
488 * Set network URI to the consumer output object.
490 * Return 0 on success. Return 1 if the URI were equal. Else, negative value on
493 int consumer_set_network_uri(struct consumer_output
*obj
,
494 struct lttng_uri
*uri
)
497 char tmp_path
[PATH_MAX
];
498 char hostname
[HOST_NAME_MAX
];
499 struct lttng_uri
*dst_uri
= NULL
;
501 /* Code flow error safety net. */
505 switch (uri
->stype
) {
506 case LTTNG_STREAM_CONTROL
:
507 dst_uri
= &obj
->dst
.net
.control
;
508 obj
->dst
.net
.control_isset
= 1;
509 if (uri
->port
== 0) {
510 /* Assign default port. */
511 uri
->port
= DEFAULT_NETWORK_CONTROL_PORT
;
513 if (obj
->dst
.net
.data_isset
&& uri
->port
==
514 obj
->dst
.net
.data
.port
) {
515 ret
= -LTTNG_ERR_INVALID
;
519 DBG3("Consumer control URI set with port %d", uri
->port
);
521 case LTTNG_STREAM_DATA
:
522 dst_uri
= &obj
->dst
.net
.data
;
523 obj
->dst
.net
.data_isset
= 1;
524 if (uri
->port
== 0) {
525 /* Assign default port. */
526 uri
->port
= DEFAULT_NETWORK_DATA_PORT
;
528 if (obj
->dst
.net
.control_isset
&& uri
->port
==
529 obj
->dst
.net
.control
.port
) {
530 ret
= -LTTNG_ERR_INVALID
;
534 DBG3("Consumer data URI set with port %d", uri
->port
);
537 ERR("Set network uri type unknown %d", uri
->stype
);
538 ret
= -LTTNG_ERR_INVALID
;
542 ret
= uri_compare(dst_uri
, uri
);
544 /* Same URI, don't touch it and return success. */
545 DBG3("URI network compare are the same");
549 /* URIs were not equal, replacing it. */
550 memset(dst_uri
, 0, sizeof(struct lttng_uri
));
551 memcpy(dst_uri
, uri
, sizeof(struct lttng_uri
));
552 obj
->type
= CONSUMER_DST_NET
;
554 /* Handle subdir and add hostname in front. */
555 if (dst_uri
->stype
== LTTNG_STREAM_CONTROL
) {
556 /* Get hostname to append it in the pathname */
557 ret
= gethostname(hostname
, sizeof(hostname
));
559 PERROR("gethostname. Fallback on default localhost");
560 strncpy(hostname
, "localhost", sizeof(hostname
));
562 hostname
[sizeof(hostname
) - 1] = '\0';
564 /* Setup consumer subdir if none present in the control URI */
565 if (strlen(dst_uri
->subdir
) == 0) {
566 ret
= snprintf(tmp_path
, sizeof(tmp_path
), "%s/%s",
567 hostname
, obj
->subdir
);
569 ret
= snprintf(tmp_path
, sizeof(tmp_path
), "%s/%s",
570 hostname
, dst_uri
->subdir
);
573 PERROR("snprintf set consumer uri subdir");
574 ret
= -LTTNG_ERR_NOMEM
;
578 strncpy(obj
->subdir
, tmp_path
, sizeof(obj
->subdir
));
579 DBG3("Consumer set network uri subdir path %s", tmp_path
);
590 * Send file descriptor to consumer via sock.
592 int consumer_send_fds(struct consumer_socket
*sock
, int *fds
, size_t nb_fd
)
600 ret
= lttcomm_send_fds_unix_sock(sock
->fd
, fds
, nb_fd
);
602 /* The above call will print a PERROR on error. */
603 DBG("Error when sending consumer fds on sock %d", sock
->fd
);
607 ret
= consumer_recv_status_reply(sock
);
614 * Consumer send communication message structure to consumer.
616 int consumer_send_msg(struct consumer_socket
*sock
,
617 struct lttcomm_consumer_msg
*msg
)
623 assert(sock
->fd
>= 0);
625 ret
= lttcomm_send_unix_sock(sock
->fd
, msg
,
626 sizeof(struct lttcomm_consumer_msg
));
628 /* The above call will print a PERROR on error. */
629 DBG("Error when sending consumer channel on sock %d", sock
->fd
);
633 ret
= consumer_recv_status_reply(sock
);
640 * Consumer send channel communication message structure to consumer.
642 int consumer_send_channel(struct consumer_socket
*sock
,
643 struct lttcomm_consumer_msg
*msg
)
649 assert(sock
->fd
>= 0);
651 ret
= lttcomm_send_unix_sock(sock
->fd
, msg
,
652 sizeof(struct lttcomm_consumer_msg
));
654 /* The above call will print a PERROR on error. */
655 DBG("Error when sending consumer channel on sock %d", sock
->fd
);
659 ret
= consumer_recv_status_reply(sock
);
666 * Populate the given consumer msg structure with the ask_channel command
669 void consumer_init_ask_channel_comm_msg(struct lttcomm_consumer_msg
*msg
,
670 uint64_t subbuf_size
,
673 unsigned int switch_timer_interval
,
674 unsigned int read_timer_interval
,
678 const char *pathname
,
686 uint64_t tracefile_size
,
687 uint64_t tracefile_count
,
688 uint64_t session_id_per_pid
)
692 /* Zeroed structure */
693 memset(msg
, 0, sizeof(struct lttcomm_consumer_msg
));
695 msg
->cmd_type
= LTTNG_CONSUMER_ASK_CHANNEL_CREATION
;
696 msg
->u
.ask_channel
.subbuf_size
= subbuf_size
;
697 msg
->u
.ask_channel
.num_subbuf
= num_subbuf
;
698 msg
->u
.ask_channel
.overwrite
= overwrite
;
699 msg
->u
.ask_channel
.switch_timer_interval
= switch_timer_interval
;
700 msg
->u
.ask_channel
.read_timer_interval
= read_timer_interval
;
701 msg
->u
.ask_channel
.output
= output
;
702 msg
->u
.ask_channel
.type
= type
;
703 msg
->u
.ask_channel
.session_id
= session_id
;
704 msg
->u
.ask_channel
.session_id_per_pid
= session_id_per_pid
;
705 msg
->u
.ask_channel
.uid
= uid
;
706 msg
->u
.ask_channel
.gid
= gid
;
707 msg
->u
.ask_channel
.relayd_id
= relayd_id
;
708 msg
->u
.ask_channel
.key
= key
;
709 msg
->u
.ask_channel
.chan_id
= chan_id
;
710 msg
->u
.ask_channel
.tracefile_size
= tracefile_size
;
711 msg
->u
.ask_channel
.tracefile_count
= tracefile_count
;
713 memcpy(msg
->u
.ask_channel
.uuid
, uuid
, sizeof(msg
->u
.ask_channel
.uuid
));
715 strncpy(msg
->u
.ask_channel
.pathname
, pathname
,
716 sizeof(msg
->u
.ask_channel
.pathname
));
717 msg
->u
.ask_channel
.pathname
[sizeof(msg
->u
.ask_channel
.pathname
)-1] = '\0';
719 strncpy(msg
->u
.ask_channel
.name
, name
, sizeof(msg
->u
.ask_channel
.name
));
720 msg
->u
.ask_channel
.name
[sizeof(msg
->u
.ask_channel
.name
) - 1] = '\0';
724 * Init channel communication message structure.
726 void consumer_init_channel_comm_msg(struct lttcomm_consumer_msg
*msg
,
727 enum lttng_consumer_command cmd
,
728 uint64_t channel_key
,
730 const char *pathname
,
735 unsigned int nb_init_streams
,
736 enum lttng_event_output output
,
738 uint64_t tracefile_size
,
739 uint64_t tracefile_count
)
743 /* Zeroed structure */
744 memset(msg
, 0, sizeof(struct lttcomm_consumer_msg
));
748 msg
->u
.channel
.channel_key
= channel_key
;
749 msg
->u
.channel
.session_id
= session_id
;
750 msg
->u
.channel
.uid
= uid
;
751 msg
->u
.channel
.gid
= gid
;
752 msg
->u
.channel
.relayd_id
= relayd_id
;
753 msg
->u
.channel
.nb_init_streams
= nb_init_streams
;
754 msg
->u
.channel
.output
= output
;
755 msg
->u
.channel
.type
= type
;
756 msg
->u
.channel
.tracefile_size
= tracefile_size
;
757 msg
->u
.channel
.tracefile_count
= tracefile_count
;
759 strncpy(msg
->u
.channel
.pathname
, pathname
,
760 sizeof(msg
->u
.channel
.pathname
));
761 msg
->u
.channel
.pathname
[sizeof(msg
->u
.channel
.pathname
) - 1] = '\0';
763 strncpy(msg
->u
.channel
.name
, name
, sizeof(msg
->u
.channel
.name
));
764 msg
->u
.channel
.name
[sizeof(msg
->u
.channel
.name
) - 1] = '\0';
768 * Init stream communication message structure.
770 void consumer_init_stream_comm_msg(struct lttcomm_consumer_msg
*msg
,
771 enum lttng_consumer_command cmd
,
772 uint64_t channel_key
,
778 memset(msg
, 0, sizeof(struct lttcomm_consumer_msg
));
781 msg
->u
.stream
.channel_key
= channel_key
;
782 msg
->u
.stream
.stream_key
= stream_key
;
783 msg
->u
.stream
.cpu
= cpu
;
787 * Send stream communication structure to the consumer.
789 int consumer_send_stream(struct consumer_socket
*sock
,
790 struct consumer_output
*dst
, struct lttcomm_consumer_msg
*msg
,
791 int *fds
, size_t nb_fd
)
801 ret
= lttcomm_send_unix_sock(sock
->fd
, msg
,
802 sizeof(struct lttcomm_consumer_msg
));
804 /* The above call will print a PERROR on error. */
805 DBG("Error when sending consumer stream on sock %d", sock
->fd
);
809 ret
= consumer_recv_status_reply(sock
);
814 ret
= consumer_send_fds(sock
, fds
, nb_fd
);
824 * Send relayd socket to consumer associated with a session name.
826 * On success return positive value. On error, negative value.
828 int consumer_send_relayd_socket(struct consumer_socket
*consumer_sock
,
829 struct lttcomm_relayd_sock
*rsock
, struct consumer_output
*consumer
,
830 enum lttng_stream_type type
, uint64_t session_id
)
833 struct lttcomm_consumer_msg msg
;
835 /* Code flow error. Safety net. */
838 assert(consumer_sock
);
840 /* Bail out if consumer is disabled */
841 if (!consumer
->enabled
) {
846 msg
.cmd_type
= LTTNG_CONSUMER_ADD_RELAYD_SOCKET
;
848 * Assign network consumer output index using the temporary consumer since
849 * this call should only be made from within a set_consumer_uri() function
850 * call in the session daemon.
852 msg
.u
.relayd_sock
.net_index
= consumer
->net_seq_index
;
853 msg
.u
.relayd_sock
.type
= type
;
854 msg
.u
.relayd_sock
.session_id
= session_id
;
855 memcpy(&msg
.u
.relayd_sock
.sock
, rsock
, sizeof(msg
.u
.relayd_sock
.sock
));
857 DBG3("Sending relayd sock info to consumer on %d", consumer_sock
->fd
);
858 ret
= lttcomm_send_unix_sock(consumer_sock
->fd
, &msg
, sizeof(msg
));
860 /* The above call will print a PERROR on error. */
861 DBG("Error when sending relayd sockets on sock %d", rsock
->sock
.fd
);
865 ret
= consumer_recv_status_reply(consumer_sock
);
870 DBG3("Sending relayd socket file descriptor to consumer");
871 ret
= consumer_send_fds(consumer_sock
, &rsock
->sock
.fd
, 1);
876 DBG2("Consumer relayd socket sent");
883 * Set consumer subdirectory using the session name and a generated datetime if
884 * needed. This is appended to the current subdirectory.
886 int consumer_set_subdir(struct consumer_output
*consumer
,
887 const char *session_name
)
890 unsigned int have_default_name
= 0;
891 char datetime
[16], tmp_path
[PATH_MAX
];
896 assert(session_name
);
898 memset(tmp_path
, 0, sizeof(tmp_path
));
900 /* Flag if we have a default session. */
901 if (strncmp(session_name
, DEFAULT_SESSION_NAME
"-",
902 strlen(DEFAULT_SESSION_NAME
) + 1) == 0) {
903 have_default_name
= 1;
905 /* Get date and time for session path */
907 timeinfo
= localtime(&rawtime
);
908 strftime(datetime
, sizeof(datetime
), "%Y%m%d-%H%M%S", timeinfo
);
911 if (have_default_name
) {
912 ret
= snprintf(tmp_path
, sizeof(tmp_path
),
913 "%s/%s", consumer
->subdir
, session_name
);
915 ret
= snprintf(tmp_path
, sizeof(tmp_path
),
916 "%s/%s-%s/", consumer
->subdir
, session_name
, datetime
);
919 PERROR("snprintf session name date");
923 strncpy(consumer
->subdir
, tmp_path
, sizeof(consumer
->subdir
));
924 DBG2("Consumer subdir set to %s", consumer
->subdir
);
931 * Ask the consumer if the data is ready to read (NOT pending) for the specific
934 * This function has a different behavior with the consumer i.e. that it waits
935 * for a reply from the consumer if yes or no the data is pending.
937 int consumer_is_data_pending(uint64_t session_id
,
938 struct consumer_output
*consumer
)
941 int32_t ret_code
= 0; /* Default is that the data is NOT pending */
942 struct consumer_socket
*socket
;
943 struct lttng_ht_iter iter
;
944 struct lttcomm_consumer_msg msg
;
948 msg
.cmd_type
= LTTNG_CONSUMER_DATA_PENDING
;
950 msg
.u
.data_pending
.session_id
= session_id
;
952 DBG3("Consumer data pending for id %" PRIu64
, session_id
);
954 /* Send command for each consumer */
956 cds_lfht_for_each_entry(consumer
->socks
->ht
, &iter
.iter
, socket
,
958 /* Code flow error */
959 assert(socket
->fd
>= 0);
961 pthread_mutex_lock(socket
->lock
);
963 ret
= lttcomm_send_unix_sock(socket
->fd
, &msg
, sizeof(msg
));
965 /* The above call will print a PERROR on error. */
966 DBG("Error on consumer is data pending on sock %d", socket
->fd
);
967 pthread_mutex_unlock(socket
->lock
);
972 * No need for a recv reply status because the answer to the command is
973 * the reply status message.
976 ret
= lttcomm_recv_unix_sock(socket
->fd
, &ret_code
, sizeof(ret_code
));
979 /* Orderly shutdown. Don't return 0 which means success. */
982 /* The above call will print a PERROR on error. */
983 DBG("Error on recv consumer is data pending on sock %d", socket
->fd
);
984 pthread_mutex_unlock(socket
->lock
);
988 pthread_mutex_unlock(socket
->lock
);
996 DBG("Consumer data is %s pending for session id %" PRIu64
,
997 ret_code
== 1 ? "" : "NOT", session_id
);
1006 * Send a flush command to consumer using the given channel key.
1008 * Return 0 on success else a negative value.
1010 int consumer_flush_channel(struct consumer_socket
*socket
, uint64_t key
)
1013 struct lttcomm_consumer_msg msg
;
1016 assert(socket
->fd
>= 0);
1018 DBG2("Consumer flush channel key %" PRIu64
, key
);
1020 msg
.cmd_type
= LTTNG_CONSUMER_FLUSH_CHANNEL
;
1021 msg
.u
.flush_channel
.key
= key
;
1023 pthread_mutex_lock(socket
->lock
);
1024 health_code_update();
1026 ret
= consumer_send_msg(socket
, &msg
);
1032 health_code_update();
1033 pthread_mutex_unlock(socket
->lock
);
1038 * Send a close metdata command to consumer using the given channel key.
1040 * Return 0 on success else a negative value.
1042 int consumer_close_metadata(struct consumer_socket
*socket
,
1043 uint64_t metadata_key
)
1046 struct lttcomm_consumer_msg msg
;
1049 assert(socket
->fd
>= 0);
1051 DBG2("Consumer close metadata channel key %" PRIu64
, metadata_key
);
1053 msg
.cmd_type
= LTTNG_CONSUMER_CLOSE_METADATA
;
1054 msg
.u
.close_metadata
.key
= metadata_key
;
1056 pthread_mutex_lock(socket
->lock
);
1057 health_code_update();
1059 ret
= consumer_send_msg(socket
, &msg
);
1065 health_code_update();
1066 pthread_mutex_unlock(socket
->lock
);
1071 * Send a setup metdata command to consumer using the given channel key.
1073 * Return 0 on success else a negative value.
1075 int consumer_setup_metadata(struct consumer_socket
*socket
,
1076 uint64_t metadata_key
)
1079 struct lttcomm_consumer_msg msg
;
1082 assert(socket
->fd
>= 0);
1084 DBG2("Consumer setup metadata channel key %" PRIu64
, metadata_key
);
1086 msg
.cmd_type
= LTTNG_CONSUMER_SETUP_METADATA
;
1087 msg
.u
.setup_metadata
.key
= metadata_key
;
1089 pthread_mutex_lock(socket
->lock
);
1090 health_code_update();
1092 ret
= consumer_send_msg(socket
, &msg
);
1098 health_code_update();
1099 pthread_mutex_unlock(socket
->lock
);
1104 * Send metadata string to consumer. Socket lock MUST be acquired.
1106 * Return 0 on success else a negative value.
1108 int consumer_push_metadata(struct consumer_socket
*socket
,
1109 uint64_t metadata_key
, char *metadata_str
, size_t len
,
1110 size_t target_offset
)
1113 struct lttcomm_consumer_msg msg
;
1116 assert(socket
->fd
>= 0);
1118 DBG2("Consumer push metadata to consumer socket %d", socket
->fd
);
1120 msg
.cmd_type
= LTTNG_CONSUMER_PUSH_METADATA
;
1121 msg
.u
.push_metadata
.key
= metadata_key
;
1122 msg
.u
.push_metadata
.target_offset
= target_offset
;
1123 msg
.u
.push_metadata
.len
= len
;
1125 health_code_update();
1126 ret
= consumer_send_msg(socket
, &msg
);
1127 if (ret
< 0 || len
== 0) {
1131 DBG3("Consumer pushing metadata on sock %d of len %zu", socket
->fd
, len
);
1133 ret
= lttcomm_send_unix_sock(socket
->fd
, metadata_str
, len
);
1138 health_code_update();
1139 ret
= consumer_recv_status_reply(socket
);
1145 health_code_update();