2 * Copyright (C) 2012 - Julien Desfossez <jdesfossez@efficios.com>
3 * David Goulet <dgoulet@efficios.com>
4 * 2013 - Jérémie Galarneau <jeremie.galarneau@efficios.com>
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.
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
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.
30 #include <sys/mount.h>
31 #include <sys/resource.h>
32 #include <sys/socket.h>
34 #include <sys/types.h>
37 #include <urcu/futex.h>
38 #include <urcu/uatomic.h>
43 #include <lttng/lttng.h>
44 #include <common/common.h>
45 #include <common/compat/poll.h>
46 #include <common/compat/socket.h>
47 #include <common/compat/endian.h>
48 #include <common/defaults.h>
49 #include <common/daemonize.h>
50 #include <common/futex.h>
51 #include <common/sessiond-comm/sessiond-comm.h>
52 #include <common/sessiond-comm/inet.h>
53 #include <common/sessiond-comm/relayd.h>
54 #include <common/uri.h>
55 #include <common/utils.h>
56 #include <common/config/config.h>
59 #include "ctf-trace.h"
62 #include "lttng-relayd.h"
64 #include "health-relayd.h"
65 #include "testpoint.h"
66 #include "viewer-stream.h"
69 #include "connection.h"
71 /* command line options */
72 char *opt_output_path
;
73 static int opt_daemon
, opt_background
;
76 * We need to wait for listener and live listener threads, as well as
77 * health check thread, before being ready to signal readiness.
79 #define NR_LTTNG_RELAY_READY 3
80 static int lttng_relay_ready
= NR_LTTNG_RELAY_READY
;
81 static int recv_child_signal
; /* Set to 1 when a SIGUSR1 signal is received. */
82 static pid_t child_ppid
; /* Internal parent PID use with daemonize. */
84 static struct lttng_uri
*control_uri
;
85 static struct lttng_uri
*data_uri
;
86 static struct lttng_uri
*live_uri
;
90 const char *tracing_group_name
= DEFAULT_TRACING_GROUP
;
91 static int tracing_group_name_override
;
93 const char * const config_section_name
= "relayd";
96 * Quit pipe for all threads. This permits a single cancellation point
97 * for all threads when receiving an event on the pipe.
99 int thread_quit_pipe
[2] = { -1, -1 };
102 * This pipe is used to inform the worker thread that a command is queued and
103 * ready to be processed.
105 static int relay_conn_pipe
[2] = { -1, -1 };
107 /* Shared between threads */
108 static int dispatch_thread_exit
;
110 static pthread_t listener_thread
;
111 static pthread_t dispatcher_thread
;
112 static pthread_t worker_thread
;
113 static pthread_t health_thread
;
115 static uint64_t last_relay_stream_id
;
118 * Relay command queue.
120 * The relay_thread_listener and relay_thread_dispatcher communicate with this
123 static struct relay_conn_queue relay_conn_queue
;
125 /* buffer allocated at startup, used to store the trace data */
126 static char *data_buffer
;
127 static unsigned int data_buffer_size
;
129 /* We need those values for the file/dir creation. */
130 static uid_t relayd_uid
;
131 static gid_t relayd_gid
;
133 /* Global relay stream hash table. */
134 struct lttng_ht
*relay_streams_ht
;
136 /* Global relay viewer stream hash table. */
137 struct lttng_ht
*viewer_streams_ht
;
139 /* Global hash table that stores relay index object. */
140 struct lttng_ht
*indexes_ht
;
142 /* Relayd health monitoring */
143 struct health_app
*health_relayd
;
145 static struct option long_options
[] = {
146 { "control-port", 1, 0, 'C', },
147 { "data-port", 1, 0, 'D', },
148 { "live-port", 1, 0, 'L', },
149 { "daemonize", 0, 0, 'd', },
150 { "background", 0, 0, 'b', },
151 { "group", 1, 0, 'g', },
152 { "help", 0, 0, 'h', },
153 { "output", 1, 0, 'o', },
154 { "verbose", 0, 0, 'v', },
155 { "config", 1, 0, 'f' },
159 static const char *config_ignore_options
[] = { "help", "config" };
162 * usage function on stderr
167 fprintf(stderr
, "Usage: %s OPTIONS\n\nOptions:\n", progname
);
168 fprintf(stderr
, " -h, --help Display this usage.\n");
169 fprintf(stderr
, " -d, --daemonize Start as a daemon.\n");
170 fprintf(stderr
, " -b, --background Start as a daemon, keeping console open.\n");
171 fprintf(stderr
, " -C, --control-port URL Control port listening.\n");
172 fprintf(stderr
, " -D, --data-port URL Data port listening.\n");
173 fprintf(stderr
, " -L, --live-port URL Live view port listening.\n");
174 fprintf(stderr
, " -o, --output PATH Output path for traces. Must use an absolute path.\n");
175 fprintf(stderr
, " -v, --verbose Verbose mode. Activate DBG() macro.\n");
176 fprintf(stderr
, " -g, --group NAME Specify the tracing group name. (default: tracing)\n");
177 fprintf(stderr
, " -f --config Load daemon configuration file\n");
181 * Take an option from the getopt output and set it in the right variable to be
184 * Return 0 on success else a negative value.
187 int set_option(int opt
, const char *arg
, const char *optname
)
193 fprintf(stderr
, "option %s", optname
);
195 fprintf(stderr
, " with arg %s\n", arg
);
199 ret
= uri_parse(arg
, &control_uri
);
201 ERR("Invalid control URI specified");
204 if (control_uri
->port
== 0) {
205 control_uri
->port
= DEFAULT_NETWORK_CONTROL_PORT
;
209 ret
= uri_parse(arg
, &data_uri
);
211 ERR("Invalid data URI specified");
214 if (data_uri
->port
== 0) {
215 data_uri
->port
= DEFAULT_NETWORK_DATA_PORT
;
219 ret
= uri_parse(arg
, &live_uri
);
221 ERR("Invalid live URI specified");
224 if (live_uri
->port
== 0) {
225 live_uri
->port
= DEFAULT_NETWORK_VIEWER_PORT
;
235 tracing_group_name
= strdup(arg
);
236 if (tracing_group_name
== NULL
) {
241 tracing_group_name_override
= 1;
247 ret
= asprintf(&opt_output_path
, "%s", arg
);
250 PERROR("asprintf opt_output_path");
255 /* Verbose level can increase using multiple -v */
257 lttng_opt_verbose
= config_parse_value(arg
);
259 /* Only 3 level of verbosity (-vvv). */
260 if (lttng_opt_verbose
< 3) {
261 lttng_opt_verbose
+= 1;
266 /* Unknown option or other error.
267 * Error is printed by getopt, just return */
280 * config_entry_handler_cb used to handle options read from a config file.
281 * See config_entry_handler_cb comment in common/config/config.h for the
282 * return value conventions.
285 int config_entry_handler(const struct config_entry
*entry
, void *unused
)
289 if (!entry
|| !entry
->name
|| !entry
->value
) {
294 /* Check if the option is to be ignored */
295 for (i
= 0; i
< sizeof(config_ignore_options
) / sizeof(char *); i
++) {
296 if (!strcmp(entry
->name
, config_ignore_options
[i
])) {
301 for (i
= 0; i
< (sizeof(long_options
) / sizeof(struct option
)) - 1; i
++) {
302 /* Ignore if entry name is not fully matched. */
303 if (strcmp(entry
->name
, long_options
[i
].name
)) {
308 * If the option takes no argument on the command line, we have to
309 * check if the value is "true". We support non-zero numeric values,
312 if (!long_options
[i
].has_arg
) {
313 ret
= config_parse_value(entry
->value
);
316 WARN("Invalid configuration value \"%s\" for option %s",
317 entry
->value
, entry
->name
);
319 /* False, skip boolean config option. */
324 ret
= set_option(long_options
[i
].val
, entry
->value
, entry
->name
);
328 WARN("Unrecognized option \"%s\" in daemon configuration file.",
336 int set_options(int argc
, char **argv
)
338 int c
, ret
= 0, option_index
= 0, retval
= 0;
339 int orig_optopt
= optopt
, orig_optind
= optind
;
340 char *default_address
, *optstring
;
341 const char *config_path
= NULL
;
343 optstring
= utils_generate_optstring(long_options
,
344 sizeof(long_options
) / sizeof(struct option
));
350 /* Check for the --config option */
352 while ((c
= getopt_long(argc
, argv
, optstring
, long_options
,
353 &option_index
)) != -1) {
357 } else if (c
!= 'f') {
361 config_path
= utils_expand_path(optarg
);
363 ERR("Failed to resolve path: %s", optarg
);
367 ret
= config_get_section_entries(config_path
, config_section_name
,
368 config_entry_handler
, NULL
);
371 ERR("Invalid configuration option at line %i", ret
);
377 /* Reset getopt's global state */
378 optopt
= orig_optopt
;
379 optind
= orig_optind
;
381 c
= getopt_long(argc
, argv
, optstring
, long_options
, &option_index
);
386 ret
= set_option(c
, optarg
, long_options
[option_index
].name
);
393 /* assign default values */
394 if (control_uri
== NULL
) {
395 ret
= asprintf(&default_address
,
396 "tcp://" DEFAULT_NETWORK_CONTROL_BIND_ADDRESS
":%d",
397 DEFAULT_NETWORK_CONTROL_PORT
);
399 PERROR("asprintf default data address");
404 ret
= uri_parse(default_address
, &control_uri
);
405 free(default_address
);
407 ERR("Invalid control URI specified");
412 if (data_uri
== NULL
) {
413 ret
= asprintf(&default_address
,
414 "tcp://" DEFAULT_NETWORK_DATA_BIND_ADDRESS
":%d",
415 DEFAULT_NETWORK_DATA_PORT
);
417 PERROR("asprintf default data address");
422 ret
= uri_parse(default_address
, &data_uri
);
423 free(default_address
);
425 ERR("Invalid data URI specified");
430 if (live_uri
== NULL
) {
431 ret
= asprintf(&default_address
,
432 "tcp://" DEFAULT_NETWORK_VIEWER_BIND_ADDRESS
":%d",
433 DEFAULT_NETWORK_VIEWER_PORT
);
435 PERROR("asprintf default viewer control address");
440 ret
= uri_parse(default_address
, &live_uri
);
441 free(default_address
);
443 ERR("Invalid viewer control URI specified");
458 void relayd_cleanup(struct relay_local_data
*relay_ctx
)
462 if (viewer_streams_ht
)
463 lttng_ht_destroy(viewer_streams_ht
);
464 if (relay_streams_ht
)
465 lttng_ht_destroy(relay_streams_ht
);
466 if (relay_ctx
&& relay_ctx
->sessions_ht
)
467 lttng_ht_destroy(relay_ctx
->sessions_ht
);
470 /* free the dynamically allocated opt_output_path */
471 free(opt_output_path
);
473 /* Close thread quit pipes */
474 utils_close_pipe(thread_quit_pipe
);
476 uri_free(control_uri
);
478 /* Live URI is freed in the live thread. */
480 if (tracing_group_name_override
) {
481 free((void *) tracing_group_name
);
486 * Write to writable pipe used to notify a thread.
489 int notify_thread_pipe(int wpipe
)
493 ret
= lttng_write(wpipe
, "!", 1);
495 PERROR("write poll pipe");
501 static void notify_health_quit_pipe(int *pipe
)
505 ret
= lttng_write(pipe
[1], "4", 1);
507 PERROR("write relay health quit");
512 * Stop all threads by closing the thread quit pipe.
515 void stop_threads(void)
519 /* Stopping all threads */
520 DBG("Terminating all threads");
521 ret
= notify_thread_pipe(thread_quit_pipe
[1]);
523 ERR("write error on thread quit pipe");
526 notify_health_quit_pipe(health_quit_pipe
);
528 /* Dispatch thread */
529 CMM_STORE_SHARED(dispatch_thread_exit
, 1);
530 futex_nto1_wake(&relay_conn_queue
.futex
);
532 ret
= relayd_live_stop();
534 ERR("Error stopping live threads");
539 * Signal handler for the daemon
541 * Simply stop all worker threads, leaving main() return gracefully after
542 * joining all threads and calling cleanup().
545 void sighandler(int sig
)
549 DBG("SIGPIPE caught");
552 DBG("SIGINT caught");
556 DBG("SIGTERM caught");
560 CMM_STORE_SHARED(recv_child_signal
, 1);
568 * Setup signal handler for :
569 * SIGINT, SIGTERM, SIGPIPE
572 int set_signal_handler(void)
578 if ((ret
= sigemptyset(&sigset
)) < 0) {
579 PERROR("sigemptyset");
583 sa
.sa_handler
= sighandler
;
586 if ((ret
= sigaction(SIGTERM
, &sa
, NULL
)) < 0) {
591 if ((ret
= sigaction(SIGINT
, &sa
, NULL
)) < 0) {
596 if ((ret
= sigaction(SIGPIPE
, &sa
, NULL
)) < 0) {
601 if ((ret
= sigaction(SIGUSR1
, &sa
, NULL
)) < 0) {
606 DBG("Signal handler set for SIGTERM, SIGUSR1, SIGPIPE and SIGINT");
611 void lttng_relay_notify_ready(void)
613 /* Notify the parent of the fork() process that we are ready. */
614 if (opt_daemon
|| opt_background
) {
615 if (uatomic_sub_return(<tng_relay_ready
, 1) == 0) {
616 kill(child_ppid
, SIGUSR1
);
622 * Init thread quit pipe.
624 * Return -1 on error or 0 if all pipes are created.
627 int init_thread_quit_pipe(void)
631 ret
= utils_create_pipe_cloexec(thread_quit_pipe
);
637 * Create a poll set with O_CLOEXEC and add the thread quit pipe to the set.
640 int create_thread_poll_set(struct lttng_poll_event
*events
, int size
)
644 if (events
== NULL
|| size
== 0) {
649 ret
= lttng_poll_create(events
, size
, LTTNG_CLOEXEC
);
655 ret
= lttng_poll_add(events
, thread_quit_pipe
[0], LPOLLIN
| LPOLLERR
);
667 * Check if the thread quit pipe was triggered.
669 * Return 1 if it was triggered else 0;
672 int check_thread_quit_pipe(int fd
, uint32_t events
)
674 if (fd
== thread_quit_pipe
[0] && (events
& LPOLLIN
)) {
682 * Create and init socket from uri.
685 struct lttcomm_sock
*relay_init_sock(struct lttng_uri
*uri
)
688 struct lttcomm_sock
*sock
= NULL
;
690 sock
= lttcomm_alloc_sock_from_uri(uri
);
692 ERR("Allocating socket");
696 ret
= lttcomm_create_sock(sock
);
700 DBG("Listening on sock %d", sock
->fd
);
702 ret
= sock
->ops
->bind(sock
);
707 ret
= sock
->ops
->listen(sock
, -1);
717 lttcomm_destroy_sock(sock
);
723 * Return nonzero if stream needs to be closed.
726 int close_stream_check(struct relay_stream
*stream
)
728 if (stream
->close_flag
&& stream
->prev_seq
== stream
->last_net_seq_num
) {
730 * We are about to close the stream so set the data pending flag to 1
731 * which will make the end data pending command skip the stream which
732 * is now closed and ready. Note that after proceeding to a file close,
733 * the written file is ready for reading.
735 stream
->data_pending_check_done
= 1;
741 static void try_close_stream(struct relay_session
*session
,
742 struct relay_stream
*stream
)
745 struct ctf_trace
*ctf_trace
;
750 if (!close_stream_check(stream
)) {
751 /* Can't close it, not ready for that. */
755 ctf_trace
= ctf_trace_find_by_path(session
->ctf_traces_ht
,
759 pthread_mutex_lock(&session
->viewer_ready_lock
);
760 ctf_trace
->invalid_flag
= 1;
761 pthread_mutex_unlock(&session
->viewer_ready_lock
);
763 ret
= stream_close(session
, stream
);
764 if (ret
|| session
->snapshot
) {
765 /* Already close thus the ctf trace is being or has been destroyed. */
769 ctf_trace_try_destroy(session
, ctf_trace
);
776 * This thread manages the listening for new connections on the network
779 void *relay_thread_listener(void *data
)
781 int i
, ret
, pollfd
, err
= -1;
782 uint32_t revents
, nb_fd
;
783 struct lttng_poll_event events
;
784 struct lttcomm_sock
*control_sock
, *data_sock
;
786 DBG("[thread] Relay listener started");
788 health_register(health_relayd
, HEALTH_RELAYD_TYPE_LISTENER
);
790 health_code_update();
792 control_sock
= relay_init_sock(control_uri
);
794 goto error_sock_control
;
797 data_sock
= relay_init_sock(data_uri
);
799 goto error_sock_relay
;
803 * Pass 3 as size here for the thread quit pipe, control and data socket.
805 ret
= create_thread_poll_set(&events
, 3);
807 goto error_create_poll
;
810 /* Add the control socket */
811 ret
= lttng_poll_add(&events
, control_sock
->fd
, LPOLLIN
| LPOLLRDHUP
);
816 /* Add the data socket */
817 ret
= lttng_poll_add(&events
, data_sock
->fd
, LPOLLIN
| LPOLLRDHUP
);
822 lttng_relay_notify_ready();
824 if (testpoint(relayd_thread_listener
)) {
825 goto error_testpoint
;
829 health_code_update();
831 DBG("Listener accepting connections");
835 ret
= lttng_poll_wait(&events
, -1);
839 * Restart interrupted system call.
841 if (errno
== EINTR
) {
849 DBG("Relay new connection received");
850 for (i
= 0; i
< nb_fd
; i
++) {
851 health_code_update();
853 /* Fetch once the poll data */
854 revents
= LTTNG_POLL_GETEV(&events
, i
);
855 pollfd
= LTTNG_POLL_GETFD(&events
, i
);
858 /* No activity for this FD (poll implementation). */
862 /* Thread quit pipe has been closed. Killing thread. */
863 ret
= check_thread_quit_pipe(pollfd
, revents
);
869 if (revents
& (LPOLLERR
| LPOLLHUP
| LPOLLRDHUP
)) {
870 ERR("socket poll error");
872 } else if (revents
& LPOLLIN
) {
874 * Get allocated in this thread, enqueued to a global queue,
875 * dequeued and freed in the worker thread.
878 struct relay_connection
*new_conn
;
879 struct lttcomm_sock
*newsock
;
881 new_conn
= connection_create();
886 if (pollfd
== data_sock
->fd
) {
887 new_conn
->type
= RELAY_DATA
;
888 newsock
= data_sock
->ops
->accept(data_sock
);
889 DBG("Relay data connection accepted, socket %d",
892 assert(pollfd
== control_sock
->fd
);
893 new_conn
->type
= RELAY_CONTROL
;
894 newsock
= control_sock
->ops
->accept(control_sock
);
895 DBG("Relay control connection accepted, socket %d",
899 PERROR("accepting sock");
900 connection_free(new_conn
);
904 ret
= setsockopt(newsock
->fd
, SOL_SOCKET
, SO_REUSEADDR
, &val
,
907 PERROR("setsockopt inet");
908 lttcomm_destroy_sock(newsock
);
909 connection_free(new_conn
);
912 new_conn
->sock
= newsock
;
914 /* Enqueue request for the dispatcher thread. */
915 cds_wfcq_enqueue(&relay_conn_queue
.head
, &relay_conn_queue
.tail
,
919 * Wake the dispatch queue futex. Implicit memory barrier with
920 * the exchange in cds_wfcq_enqueue.
922 futex_nto1_wake(&relay_conn_queue
.futex
);
931 lttng_poll_clean(&events
);
933 if (data_sock
->fd
>= 0) {
934 ret
= data_sock
->ops
->close(data_sock
);
939 lttcomm_destroy_sock(data_sock
);
941 if (control_sock
->fd
>= 0) {
942 ret
= control_sock
->ops
->close(control_sock
);
947 lttcomm_destroy_sock(control_sock
);
951 ERR("Health error occurred in %s", __func__
);
953 health_unregister(health_relayd
);
954 DBG("Relay listener thread cleanup complete");
960 * This thread manages the dispatching of the requests to worker threads
963 void *relay_thread_dispatcher(void *data
)
967 struct cds_wfcq_node
*node
;
968 struct relay_connection
*new_conn
= NULL
;
970 DBG("[thread] Relay dispatcher started");
972 health_register(health_relayd
, HEALTH_RELAYD_TYPE_DISPATCHER
);
974 if (testpoint(relayd_thread_dispatcher
)) {
975 goto error_testpoint
;
978 health_code_update();
980 while (!CMM_LOAD_SHARED(dispatch_thread_exit
)) {
981 health_code_update();
983 /* Atomically prepare the queue futex */
984 futex_nto1_prepare(&relay_conn_queue
.futex
);
987 health_code_update();
989 /* Dequeue commands */
990 node
= cds_wfcq_dequeue_blocking(&relay_conn_queue
.head
,
991 &relay_conn_queue
.tail
);
993 DBG("Woken up but nothing in the relay command queue");
994 /* Continue thread execution */
997 new_conn
= caa_container_of(node
, struct relay_connection
, qnode
);
999 DBG("Dispatching request waiting on sock %d", new_conn
->sock
->fd
);
1002 * Inform worker thread of the new request. This call is blocking
1003 * so we can be assured that the data will be read at some point in
1004 * time or wait to the end of the world :)
1006 ret
= lttng_write(relay_conn_pipe
[1], &new_conn
, sizeof(new_conn
));
1008 PERROR("write connection pipe");
1009 connection_destroy(new_conn
);
1012 } while (node
!= NULL
);
1014 /* Futex wait on queue. Blocking call on futex() */
1015 health_poll_entry();
1016 futex_nto1_wait(&relay_conn_queue
.futex
);
1020 /* Normal exit, no error */
1027 ERR("Health error occurred in %s", __func__
);
1029 health_unregister(health_relayd
);
1030 DBG("Dispatch thread dying");
1035 static void try_close_streams(struct relay_session
*session
)
1037 struct ctf_trace
*ctf_trace
;
1038 struct lttng_ht_iter iter
;
1042 pthread_mutex_lock(&session
->viewer_ready_lock
);
1044 cds_lfht_for_each_entry(session
->ctf_traces_ht
->ht
, &iter
.iter
, ctf_trace
,
1046 struct relay_stream
*stream
;
1048 /* Close streams. */
1049 cds_list_for_each_entry(stream
, &ctf_trace
->stream_list
, trace_list
) {
1050 stream_close(session
, stream
);
1053 ctf_trace
->invalid_flag
= 1;
1054 ctf_trace_try_destroy(session
, ctf_trace
);
1057 pthread_mutex_unlock(&session
->viewer_ready_lock
);
1061 * Try to destroy a session within a connection.
1063 static void destroy_session(struct relay_session
*session
,
1064 struct lttng_ht
*sessions_ht
)
1067 assert(sessions_ht
);
1069 /* Indicate that this session can be destroyed from now on. */
1070 session
->close_flag
= 1;
1072 try_close_streams(session
);
1075 * This will try to delete and destroy the session if no viewer is attached
1076 * to it meaning the refcount is down to zero.
1078 session_try_destroy(sessions_ht
, session
);
1082 * Copy index data from the control port to a given index object.
1084 static void copy_index_control_data(struct relay_index
*index
,
1085 struct lttcomm_relayd_index
*data
)
1091 * The index on disk is encoded in big endian, so we don't need to convert
1092 * the data received on the network. The data_offset value is NEVER
1093 * modified here and is updated by the data thread.
1095 index
->index_data
.packet_size
= data
->packet_size
;
1096 index
->index_data
.content_size
= data
->content_size
;
1097 index
->index_data
.timestamp_begin
= data
->timestamp_begin
;
1098 index
->index_data
.timestamp_end
= data
->timestamp_end
;
1099 index
->index_data
.events_discarded
= data
->events_discarded
;
1100 index
->index_data
.stream_id
= data
->stream_id
;
1104 * Handle the RELAYD_CREATE_SESSION command.
1106 * On success, send back the session id or else return a negative value.
1109 int relay_create_session(struct lttcomm_relayd_hdr
*recv_hdr
,
1110 struct relay_connection
*conn
)
1112 int ret
= 0, send_ret
;
1113 struct relay_session
*session
;
1114 struct lttcomm_relayd_status_session reply
;
1119 memset(&reply
, 0, sizeof(reply
));
1121 session
= session_create();
1126 session
->minor
= conn
->minor
;
1127 session
->major
= conn
->major
;
1128 conn
->session_id
= session
->id
;
1129 conn
->session
= session
;
1131 reply
.session_id
= htobe64(session
->id
);
1133 switch (conn
->minor
) {
1138 case 4: /* LTTng sessiond 2.4 */
1140 ret
= cmd_create_session_2_4(conn
, session
);
1143 lttng_ht_add_unique_u64(conn
->sessions_ht
, &session
->session_n
);
1144 DBG("Created session %" PRIu64
, session
->id
);
1148 reply
.ret_code
= htobe32(LTTNG_ERR_FATAL
);
1150 reply
.ret_code
= htobe32(LTTNG_OK
);
1153 send_ret
= conn
->sock
->ops
->sendmsg(conn
->sock
, &reply
, sizeof(reply
), 0);
1155 ERR("Relayd sending session id");
1163 * When we have received all the streams and the metadata for a channel,
1164 * we make them visible to the viewer threads.
1167 void set_viewer_ready_flag(struct relay_connection
*conn
)
1169 struct relay_stream
*stream
, *tmp_stream
;
1171 pthread_mutex_lock(&conn
->session
->viewer_ready_lock
);
1172 cds_list_for_each_entry_safe(stream
, tmp_stream
, &conn
->recv_head
,
1174 stream
->viewer_ready
= 1;
1175 cds_list_del(&stream
->recv_list
);
1177 pthread_mutex_unlock(&conn
->session
->viewer_ready_lock
);
1182 * Add a recv handle node to the connection recv list with the given stream
1183 * handle. A new node is allocated thus must be freed when the node is deleted
1186 static void queue_stream(struct relay_stream
*stream
,
1187 struct relay_connection
*conn
)
1192 cds_list_add(&stream
->recv_list
, &conn
->recv_head
);
1196 * relay_add_stream: allocate a new stream for a session
1199 int relay_add_stream(struct lttcomm_relayd_hdr
*recv_hdr
,
1200 struct relay_connection
*conn
)
1203 struct relay_session
*session
= conn
->session
;
1204 struct relay_stream
*stream
= NULL
;
1205 struct lttcomm_relayd_status_stream reply
;
1206 struct ctf_trace
*trace
;
1208 if (!session
|| conn
->version_check_done
== 0) {
1209 ERR("Trying to add a stream before version check");
1211 goto end_no_session
;
1214 stream
= zmalloc(sizeof(struct relay_stream
));
1215 if (stream
== NULL
) {
1216 PERROR("relay stream zmalloc");
1218 goto end_no_session
;
1221 switch (conn
->minor
) {
1222 case 1: /* LTTng sessiond 2.1 */
1223 ret
= cmd_recv_stream_2_1(conn
, stream
);
1225 case 2: /* LTTng sessiond 2.2 */
1227 ret
= cmd_recv_stream_2_2(conn
, stream
);
1231 goto err_free_stream
;
1235 stream
->stream_handle
= ++last_relay_stream_id
;
1236 stream
->prev_seq
= -1ULL;
1237 stream
->session_id
= session
->id
;
1238 stream
->index_fd
= -1;
1239 stream
->read_index_fd
= -1;
1240 stream
->ctf_stream_id
= -1ULL;
1241 lttng_ht_node_init_u64(&stream
->node
, stream
->stream_handle
);
1242 pthread_mutex_init(&stream
->lock
, NULL
);
1244 ret
= utils_mkdir_recursive(stream
->path_name
, S_IRWXU
| S_IRWXG
,
1247 ERR("relay creating output directory");
1248 goto err_free_stream
;
1252 * No need to use run_as API here because whatever we receives, the relayd
1253 * uses its own credentials for the stream files.
1255 ret
= utils_create_stream_file(stream
->path_name
, stream
->channel_name
,
1256 stream
->tracefile_size
, 0, relayd_uid
, relayd_gid
, NULL
);
1258 ERR("Create output file");
1259 goto err_free_stream
;
1262 if (stream
->tracefile_size
) {
1263 DBG("Tracefile %s/%s_0 created", stream
->path_name
, stream
->channel_name
);
1265 DBG("Tracefile %s/%s created", stream
->path_name
, stream
->channel_name
);
1268 trace
= ctf_trace_find_by_path(session
->ctf_traces_ht
, stream
->path_name
);
1270 trace
= ctf_trace_create(stream
->path_name
);
1275 ctf_trace_add(session
->ctf_traces_ht
, trace
);
1277 ctf_trace_get_ref(trace
);
1279 if (!strncmp(stream
->channel_name
, DEFAULT_METADATA_NAME
, NAME_MAX
)) {
1280 stream
->metadata_flag
= 1;
1281 /* Assign quick reference to the metadata stream in the trace. */
1282 trace
->metadata_stream
= stream
;
1286 * Add the stream in the recv list of the connection. Once the end stream
1287 * message is received, this list is emptied and streams are set with the
1288 * viewer ready flag.
1290 queue_stream(stream
, conn
);
1293 * Both in the ctf_trace object and the global stream ht since the data
1294 * side of the relayd does not have the concept of session.
1296 lttng_ht_add_unique_u64(relay_streams_ht
, &stream
->node
);
1297 cds_list_add_tail(&stream
->trace_list
, &trace
->stream_list
);
1299 session
->stream_count
++;
1301 DBG("Relay new stream added %s with ID %" PRIu64
, stream
->channel_name
,
1302 stream
->stream_handle
);
1305 memset(&reply
, 0, sizeof(reply
));
1306 reply
.handle
= htobe64(stream
->stream_handle
);
1307 /* send the session id to the client or a negative return code on error */
1309 reply
.ret_code
= htobe32(LTTNG_ERR_UNK
);
1310 /* stream was not properly added to the ht, so free it */
1311 stream_destroy(stream
);
1313 reply
.ret_code
= htobe32(LTTNG_OK
);
1316 send_ret
= conn
->sock
->ops
->sendmsg(conn
->sock
, &reply
,
1317 sizeof(struct lttcomm_relayd_status_stream
), 0);
1319 ERR("Relay sending stream id");
1328 stream_destroy(stream
);
1333 * relay_close_stream: close a specific stream
1336 int relay_close_stream(struct lttcomm_relayd_hdr
*recv_hdr
,
1337 struct relay_connection
*conn
)
1340 struct relay_session
*session
= conn
->session
;
1341 struct lttcomm_relayd_close_stream stream_info
;
1342 struct lttcomm_relayd_generic_reply reply
;
1343 struct relay_stream
*stream
;
1345 DBG("Close stream received");
1347 if (!session
|| conn
->version_check_done
== 0) {
1348 ERR("Trying to close a stream before version check");
1350 goto end_no_session
;
1353 ret
= conn
->sock
->ops
->recvmsg(conn
->sock
, &stream_info
,
1354 sizeof(struct lttcomm_relayd_close_stream
), 0);
1355 if (ret
< sizeof(struct lttcomm_relayd_close_stream
)) {
1357 /* Orderly shutdown. Not necessary to print an error. */
1358 DBG("Socket %d did an orderly shutdown", conn
->sock
->fd
);
1360 ERR("Relay didn't receive valid add_stream struct size : %d", ret
);
1363 goto end_no_session
;
1367 stream
= stream_find_by_id(relay_streams_ht
,
1368 be64toh(stream_info
.stream_id
));
1374 stream
->last_net_seq_num
= be64toh(stream_info
.last_net_seq_num
);
1375 stream
->close_flag
= 1;
1376 session
->stream_count
--;
1378 /* Check if we can close it or else the data will do it. */
1379 try_close_stream(session
, stream
);
1384 memset(&reply
, 0, sizeof(reply
));
1386 reply
.ret_code
= htobe32(LTTNG_ERR_UNK
);
1388 reply
.ret_code
= htobe32(LTTNG_OK
);
1390 send_ret
= conn
->sock
->ops
->sendmsg(conn
->sock
, &reply
,
1391 sizeof(struct lttcomm_relayd_generic_reply
), 0);
1393 ERR("Relay sending stream id");
1402 * relay_unknown_command: send -1 if received unknown command
1405 void relay_unknown_command(struct relay_connection
*conn
)
1407 struct lttcomm_relayd_generic_reply reply
;
1410 memset(&reply
, 0, sizeof(reply
));
1411 reply
.ret_code
= htobe32(LTTNG_ERR_UNK
);
1412 ret
= conn
->sock
->ops
->sendmsg(conn
->sock
, &reply
,
1413 sizeof(struct lttcomm_relayd_generic_reply
), 0);
1415 ERR("Relay sending unknown command");
1420 * relay_start: send an acknowledgment to the client to tell if we are
1421 * ready to receive data. We are ready if a session is established.
1424 int relay_start(struct lttcomm_relayd_hdr
*recv_hdr
,
1425 struct relay_connection
*conn
)
1427 int ret
= htobe32(LTTNG_OK
);
1428 struct lttcomm_relayd_generic_reply reply
;
1429 struct relay_session
*session
= conn
->session
;
1432 DBG("Trying to start the streaming without a session established");
1433 ret
= htobe32(LTTNG_ERR_UNK
);
1436 memset(&reply
, 0, sizeof(reply
));
1437 reply
.ret_code
= ret
;
1438 ret
= conn
->sock
->ops
->sendmsg(conn
->sock
, &reply
,
1439 sizeof(struct lttcomm_relayd_generic_reply
), 0);
1441 ERR("Relay sending start ack");
1448 * Append padding to the file pointed by the file descriptor fd.
1450 static int write_padding_to_file(int fd
, uint32_t size
)
1459 zeros
= zmalloc(size
);
1460 if (zeros
== NULL
) {
1461 PERROR("zmalloc zeros for padding");
1466 ret
= lttng_write(fd
, zeros
, size
);
1468 PERROR("write padding to file");
1478 * relay_recv_metadata: receive the metada for the session.
1481 int relay_recv_metadata(struct lttcomm_relayd_hdr
*recv_hdr
,
1482 struct relay_connection
*conn
)
1484 int ret
= htobe32(LTTNG_OK
);
1486 struct relay_session
*session
= conn
->session
;
1487 struct lttcomm_relayd_metadata_payload
*metadata_struct
;
1488 struct relay_stream
*metadata_stream
;
1489 uint64_t data_size
, payload_size
;
1490 struct ctf_trace
*ctf_trace
;
1493 ERR("Metadata sent before version check");
1498 data_size
= payload_size
= be64toh(recv_hdr
->data_size
);
1499 if (data_size
< sizeof(struct lttcomm_relayd_metadata_payload
)) {
1500 ERR("Incorrect data size");
1504 payload_size
-= sizeof(struct lttcomm_relayd_metadata_payload
);
1506 if (data_buffer_size
< data_size
) {
1507 /* In case the realloc fails, we can free the memory */
1510 tmp_data_ptr
= realloc(data_buffer
, data_size
);
1511 if (!tmp_data_ptr
) {
1512 ERR("Allocating data buffer");
1517 data_buffer
= tmp_data_ptr
;
1518 data_buffer_size
= data_size
;
1520 memset(data_buffer
, 0, data_size
);
1521 DBG2("Relay receiving metadata, waiting for %" PRIu64
" bytes", data_size
);
1522 ret
= conn
->sock
->ops
->recvmsg(conn
->sock
, data_buffer
, data_size
, 0);
1523 if (ret
< 0 || ret
!= data_size
) {
1525 /* Orderly shutdown. Not necessary to print an error. */
1526 DBG("Socket %d did an orderly shutdown", conn
->sock
->fd
);
1528 ERR("Relay didn't receive the whole metadata");
1533 metadata_struct
= (struct lttcomm_relayd_metadata_payload
*) data_buffer
;
1536 metadata_stream
= stream_find_by_id(relay_streams_ht
,
1537 be64toh(metadata_struct
->stream_id
));
1538 if (!metadata_stream
) {
1543 size_ret
= lttng_write(metadata_stream
->fd
, metadata_struct
->payload
,
1545 if (size_ret
< payload_size
) {
1546 ERR("Relay error writing metadata on file");
1551 ret
= write_padding_to_file(metadata_stream
->fd
,
1552 be32toh(metadata_struct
->padding_size
));
1557 ctf_trace
= ctf_trace_find_by_path(session
->ctf_traces_ht
,
1558 metadata_stream
->path_name
);
1560 ctf_trace
->metadata_received
+=
1561 payload_size
+ be32toh(metadata_struct
->padding_size
);
1563 DBG2("Relay metadata written");
1572 * relay_send_version: send relayd version number
1575 int relay_send_version(struct lttcomm_relayd_hdr
*recv_hdr
,
1576 struct relay_connection
*conn
)
1579 struct lttcomm_relayd_version reply
, msg
;
1583 conn
->version_check_done
= 1;
1585 /* Get version from the other side. */
1586 ret
= conn
->sock
->ops
->recvmsg(conn
->sock
, &msg
, sizeof(msg
), 0);
1587 if (ret
< 0 || ret
!= sizeof(msg
)) {
1589 /* Orderly shutdown. Not necessary to print an error. */
1590 DBG("Socket %d did an orderly shutdown", conn
->sock
->fd
);
1592 ERR("Relay failed to receive the version values.");
1598 memset(&reply
, 0, sizeof(reply
));
1599 reply
.major
= RELAYD_VERSION_COMM_MAJOR
;
1600 reply
.minor
= RELAYD_VERSION_COMM_MINOR
;
1602 /* Major versions must be the same */
1603 if (reply
.major
!= be32toh(msg
.major
)) {
1604 DBG("Incompatible major versions (%u vs %u), deleting session",
1605 reply
.major
, be32toh(msg
.major
));
1606 destroy_session(conn
->session
, conn
->sessions_ht
);
1611 conn
->major
= reply
.major
;
1612 /* We adapt to the lowest compatible version */
1613 if (reply
.minor
<= be32toh(msg
.minor
)) {
1614 conn
->minor
= reply
.minor
;
1616 conn
->minor
= be32toh(msg
.minor
);
1619 reply
.major
= htobe32(reply
.major
);
1620 reply
.minor
= htobe32(reply
.minor
);
1621 ret
= conn
->sock
->ops
->sendmsg(conn
->sock
, &reply
,
1622 sizeof(struct lttcomm_relayd_version
), 0);
1624 ERR("Relay sending version");
1627 DBG("Version check done using protocol %u.%u", conn
->major
,
1635 * Check for data pending for a given stream id from the session daemon.
1638 int relay_data_pending(struct lttcomm_relayd_hdr
*recv_hdr
,
1639 struct relay_connection
*conn
)
1641 struct relay_session
*session
= conn
->session
;
1642 struct lttcomm_relayd_data_pending msg
;
1643 struct lttcomm_relayd_generic_reply reply
;
1644 struct relay_stream
*stream
;
1646 uint64_t last_net_seq_num
, stream_id
;
1648 DBG("Data pending command received");
1650 if (!session
|| conn
->version_check_done
== 0) {
1651 ERR("Trying to check for data before version check");
1653 goto end_no_session
;
1656 ret
= conn
->sock
->ops
->recvmsg(conn
->sock
, &msg
, sizeof(msg
), 0);
1657 if (ret
< sizeof(msg
)) {
1659 /* Orderly shutdown. Not necessary to print an error. */
1660 DBG("Socket %d did an orderly shutdown", conn
->sock
->fd
);
1662 ERR("Relay didn't receive valid data_pending struct size : %d",
1666 goto end_no_session
;
1669 stream_id
= be64toh(msg
.stream_id
);
1670 last_net_seq_num
= be64toh(msg
.last_net_seq_num
);
1673 stream
= stream_find_by_id(relay_streams_ht
, stream_id
);
1674 if (stream
== NULL
) {
1679 DBG("Data pending for stream id %" PRIu64
" prev_seq %" PRIu64
1680 " and last_seq %" PRIu64
, stream_id
, stream
->prev_seq
,
1683 /* Avoid wrapping issue */
1684 if (((int64_t) (stream
->prev_seq
- last_net_seq_num
)) >= 0) {
1685 /* Data has in fact been written and is NOT pending */
1688 /* Data still being streamed thus pending */
1692 /* Pending check is now done. */
1693 stream
->data_pending_check_done
= 1;
1698 memset(&reply
, 0, sizeof(reply
));
1699 reply
.ret_code
= htobe32(ret
);
1700 ret
= conn
->sock
->ops
->sendmsg(conn
->sock
, &reply
, sizeof(reply
), 0);
1702 ERR("Relay data pending ret code failed");
1710 * Wait for the control socket to reach a quiescent state.
1712 * Note that for now, when receiving this command from the session daemon, this
1713 * means that every subsequent commands or data received on the control socket
1714 * has been handled. So, this is why we simply return OK here.
1717 int relay_quiescent_control(struct lttcomm_relayd_hdr
*recv_hdr
,
1718 struct relay_connection
*conn
)
1722 struct relay_stream
*stream
;
1723 struct lttng_ht_iter iter
;
1724 struct lttcomm_relayd_quiescent_control msg
;
1725 struct lttcomm_relayd_generic_reply reply
;
1727 DBG("Checking quiescent state on control socket");
1729 if (!conn
->session
|| conn
->version_check_done
== 0) {
1730 ERR("Trying to check for data before version check");
1732 goto end_no_session
;
1735 ret
= conn
->sock
->ops
->recvmsg(conn
->sock
, &msg
, sizeof(msg
), 0);
1736 if (ret
< sizeof(msg
)) {
1738 /* Orderly shutdown. Not necessary to print an error. */
1739 DBG("Socket %d did an orderly shutdown", conn
->sock
->fd
);
1741 ERR("Relay didn't receive valid begin data_pending struct size: %d",
1745 goto end_no_session
;
1748 stream_id
= be64toh(msg
.stream_id
);
1751 cds_lfht_for_each_entry(relay_streams_ht
->ht
, &iter
.iter
, stream
,
1753 if (stream
->stream_handle
== stream_id
) {
1754 stream
->data_pending_check_done
= 1;
1755 DBG("Relay quiescent control pending flag set to %" PRIu64
,
1762 memset(&reply
, 0, sizeof(reply
));
1763 reply
.ret_code
= htobe32(LTTNG_OK
);
1764 ret
= conn
->sock
->ops
->sendmsg(conn
->sock
, &reply
, sizeof(reply
), 0);
1766 ERR("Relay data quiescent control ret code failed");
1774 * Initialize a data pending command. This means that a client is about to ask
1775 * for data pending for each stream he/she holds. Simply iterate over all
1776 * streams of a session and set the data_pending_check_done flag.
1778 * This command returns to the client a LTTNG_OK code.
1781 int relay_begin_data_pending(struct lttcomm_relayd_hdr
*recv_hdr
,
1782 struct relay_connection
*conn
)
1785 struct lttng_ht_iter iter
;
1786 struct lttcomm_relayd_begin_data_pending msg
;
1787 struct lttcomm_relayd_generic_reply reply
;
1788 struct relay_stream
*stream
;
1789 uint64_t session_id
;
1794 DBG("Init streams for data pending");
1796 if (!conn
->session
|| conn
->version_check_done
== 0) {
1797 ERR("Trying to check for data before version check");
1799 goto end_no_session
;
1802 ret
= conn
->sock
->ops
->recvmsg(conn
->sock
, &msg
, sizeof(msg
), 0);
1803 if (ret
< sizeof(msg
)) {
1805 /* Orderly shutdown. Not necessary to print an error. */
1806 DBG("Socket %d did an orderly shutdown", conn
->sock
->fd
);
1808 ERR("Relay didn't receive valid begin data_pending struct size: %d",
1812 goto end_no_session
;
1815 session_id
= be64toh(msg
.session_id
);
1818 * Iterate over all streams to set the begin data pending flag. For now, the
1819 * streams are indexed by stream handle so we have to iterate over all
1820 * streams to find the one associated with the right session_id.
1823 cds_lfht_for_each_entry(relay_streams_ht
->ht
, &iter
.iter
, stream
,
1825 if (stream
->session_id
== session_id
) {
1826 stream
->data_pending_check_done
= 0;
1827 DBG("Set begin data pending flag to stream %" PRIu64
,
1828 stream
->stream_handle
);
1833 memset(&reply
, 0, sizeof(reply
));
1834 /* All good, send back reply. */
1835 reply
.ret_code
= htobe32(LTTNG_OK
);
1837 ret
= conn
->sock
->ops
->sendmsg(conn
->sock
, &reply
, sizeof(reply
), 0);
1839 ERR("Relay begin data pending send reply failed");
1847 * End data pending command. This will check, for a given session id, if each
1848 * stream associated with it has its data_pending_check_done flag set. If not,
1849 * this means that the client lost track of the stream but the data is still
1850 * being streamed on our side. In this case, we inform the client that data is
1853 * Return to the client if there is data in flight or not with a ret_code.
1856 int relay_end_data_pending(struct lttcomm_relayd_hdr
*recv_hdr
,
1857 struct relay_connection
*conn
)
1860 struct lttng_ht_iter iter
;
1861 struct lttcomm_relayd_end_data_pending msg
;
1862 struct lttcomm_relayd_generic_reply reply
;
1863 struct relay_stream
*stream
;
1864 uint64_t session_id
;
1865 uint32_t is_data_inflight
= 0;
1870 DBG("End data pending command");
1872 if (!conn
->session
|| conn
->version_check_done
== 0) {
1873 ERR("Trying to check for data before version check");
1875 goto end_no_session
;
1878 ret
= conn
->sock
->ops
->recvmsg(conn
->sock
, &msg
, sizeof(msg
), 0);
1879 if (ret
< sizeof(msg
)) {
1881 /* Orderly shutdown. Not necessary to print an error. */
1882 DBG("Socket %d did an orderly shutdown", conn
->sock
->fd
);
1884 ERR("Relay didn't receive valid end data_pending struct size: %d",
1888 goto end_no_session
;
1891 session_id
= be64toh(msg
.session_id
);
1893 /* Iterate over all streams to see if the begin data pending flag is set. */
1895 cds_lfht_for_each_entry(relay_streams_ht
->ht
, &iter
.iter
, stream
,
1897 if (stream
->session_id
== session_id
&&
1898 !stream
->data_pending_check_done
&& !stream
->terminated_flag
) {
1899 is_data_inflight
= 1;
1900 DBG("Data is still in flight for stream %" PRIu64
,
1901 stream
->stream_handle
);
1907 memset(&reply
, 0, sizeof(reply
));
1908 /* All good, send back reply. */
1909 reply
.ret_code
= htobe32(is_data_inflight
);
1911 ret
= conn
->sock
->ops
->sendmsg(conn
->sock
, &reply
, sizeof(reply
), 0);
1913 ERR("Relay end data pending send reply failed");
1921 * Receive an index for a specific stream.
1923 * Return 0 on success else a negative value.
1926 int relay_recv_index(struct lttcomm_relayd_hdr
*recv_hdr
,
1927 struct relay_connection
*conn
)
1929 int ret
, send_ret
, index_created
= 0;
1930 struct relay_session
*session
= conn
->session
;
1931 struct lttcomm_relayd_index index_info
;
1932 struct relay_index
*index
, *wr_index
= NULL
;
1933 struct lttcomm_relayd_generic_reply reply
;
1934 struct relay_stream
*stream
;
1935 uint64_t net_seq_num
;
1939 DBG("Relay receiving index");
1941 if (!session
|| conn
->version_check_done
== 0) {
1942 ERR("Trying to close a stream before version check");
1944 goto end_no_session
;
1947 ret
= conn
->sock
->ops
->recvmsg(conn
->sock
, &index_info
,
1948 sizeof(index_info
), 0);
1949 if (ret
< sizeof(index_info
)) {
1951 /* Orderly shutdown. Not necessary to print an error. */
1952 DBG("Socket %d did an orderly shutdown", conn
->sock
->fd
);
1954 ERR("Relay didn't receive valid index struct size : %d", ret
);
1957 goto end_no_session
;
1960 net_seq_num
= be64toh(index_info
.net_seq_num
);
1963 stream
= stream_find_by_id(relay_streams_ht
,
1964 be64toh(index_info
.relay_stream_id
));
1967 goto end_rcu_unlock
;
1970 /* Live beacon handling */
1971 if (index_info
.packet_size
== 0) {
1972 DBG("Received live beacon for stream %" PRIu64
, stream
->stream_handle
);
1975 * Only flag a stream inactive when it has already received data
1976 * and no indexes are in flight.
1978 if (stream
->total_index_received
> 0 && stream
->indexes_in_flight
== 0) {
1979 stream
->beacon_ts_end
= be64toh(index_info
.timestamp_end
);
1982 goto end_rcu_unlock
;
1984 stream
->beacon_ts_end
= -1ULL;
1987 index
= relay_index_find(stream
->stream_handle
, net_seq_num
);
1989 /* A successful creation will add the object to the HT. */
1990 index
= relay_index_create(stream
->stream_handle
, net_seq_num
);
1992 goto end_rcu_unlock
;
1995 stream
->indexes_in_flight
++;
1998 copy_index_control_data(index
, &index_info
);
1999 if (stream
->ctf_stream_id
== -1ULL) {
2000 stream
->ctf_stream_id
= be64toh(index_info
.stream_id
);
2003 if (index_created
) {
2005 * Try to add the relay index object to the hash table. If an object
2006 * already exist, destroy back the index created, set the data in this
2007 * object and write it on disk.
2009 relay_index_add(index
, &wr_index
);
2011 copy_index_control_data(wr_index
, &index_info
);
2015 /* The index already exists so write it on disk. */
2019 /* Do we have a writable ready index to write on disk. */
2021 ret
= relay_index_write(wr_index
->fd
, wr_index
);
2023 goto end_rcu_unlock
;
2025 stream
->total_index_received
++;
2026 stream
->indexes_in_flight
--;
2027 assert(stream
->indexes_in_flight
>= 0);
2033 memset(&reply
, 0, sizeof(reply
));
2035 reply
.ret_code
= htobe32(LTTNG_ERR_UNK
);
2037 reply
.ret_code
= htobe32(LTTNG_OK
);
2039 send_ret
= conn
->sock
->ops
->sendmsg(conn
->sock
, &reply
, sizeof(reply
), 0);
2041 ERR("Relay sending close index id reply");
2050 * Receive the streams_sent message.
2052 * Return 0 on success else a negative value.
2055 int relay_streams_sent(struct lttcomm_relayd_hdr
*recv_hdr
,
2056 struct relay_connection
*conn
)
2059 struct lttcomm_relayd_generic_reply reply
;
2063 DBG("Relay receiving streams_sent");
2065 if (!conn
->session
|| conn
->version_check_done
== 0) {
2066 ERR("Trying to close a stream before version check");
2068 goto end_no_session
;
2072 * Flag every pending stream in the connection recv list that they are
2073 * ready to be used by the viewer.
2075 set_viewer_ready_flag(conn
);
2078 * Inform the viewer that there are new streams in the session.
2080 if (conn
->session
->viewer_refcount
) {
2081 uatomic_set(&conn
->session
->new_streams
, 1);
2084 memset(&reply
, 0, sizeof(reply
));
2085 reply
.ret_code
= htobe32(LTTNG_OK
);
2086 send_ret
= conn
->sock
->ops
->sendmsg(conn
->sock
, &reply
, sizeof(reply
), 0);
2088 ERR("Relay sending sent_stream reply");
2100 * Process the commands received on the control socket
2103 int relay_process_control(struct lttcomm_relayd_hdr
*recv_hdr
,
2104 struct relay_connection
*conn
)
2108 switch (be32toh(recv_hdr
->cmd
)) {
2109 case RELAYD_CREATE_SESSION
:
2110 ret
= relay_create_session(recv_hdr
, conn
);
2112 case RELAYD_ADD_STREAM
:
2113 ret
= relay_add_stream(recv_hdr
, conn
);
2115 case RELAYD_START_DATA
:
2116 ret
= relay_start(recv_hdr
, conn
);
2118 case RELAYD_SEND_METADATA
:
2119 ret
= relay_recv_metadata(recv_hdr
, conn
);
2121 case RELAYD_VERSION
:
2122 ret
= relay_send_version(recv_hdr
, conn
);
2124 case RELAYD_CLOSE_STREAM
:
2125 ret
= relay_close_stream(recv_hdr
, conn
);
2127 case RELAYD_DATA_PENDING
:
2128 ret
= relay_data_pending(recv_hdr
, conn
);
2130 case RELAYD_QUIESCENT_CONTROL
:
2131 ret
= relay_quiescent_control(recv_hdr
, conn
);
2133 case RELAYD_BEGIN_DATA_PENDING
:
2134 ret
= relay_begin_data_pending(recv_hdr
, conn
);
2136 case RELAYD_END_DATA_PENDING
:
2137 ret
= relay_end_data_pending(recv_hdr
, conn
);
2139 case RELAYD_SEND_INDEX
:
2140 ret
= relay_recv_index(recv_hdr
, conn
);
2142 case RELAYD_STREAMS_SENT
:
2143 ret
= relay_streams_sent(recv_hdr
, conn
);
2145 case RELAYD_UPDATE_SYNC_INFO
:
2147 ERR("Received unknown command (%u)", be32toh(recv_hdr
->cmd
));
2148 relay_unknown_command(conn
);
2158 * Handle index for a data stream.
2160 * RCU read side lock MUST be acquired.
2162 * Return 0 on success else a negative value.
2164 static int handle_index_data(struct relay_stream
*stream
, uint64_t net_seq_num
,
2167 int ret
= 0, index_created
= 0;
2168 uint64_t stream_id
, data_offset
;
2169 struct relay_index
*index
, *wr_index
= NULL
;
2173 stream_id
= stream
->stream_handle
;
2174 /* Get data offset because we are about to update the index. */
2175 data_offset
= htobe64(stream
->tracefile_size_current
);
2178 * Lookup for an existing index for that stream id/sequence number. If on
2179 * exists, the control thread already received the data for it thus we need
2180 * to write it on disk.
2182 index
= relay_index_find(stream_id
, net_seq_num
);
2184 /* A successful creation will add the object to the HT. */
2185 index
= relay_index_create(stream_id
, net_seq_num
);
2191 stream
->indexes_in_flight
++;
2194 if (rotate_index
|| stream
->index_fd
< 0) {
2195 index
->to_close_fd
= stream
->index_fd
;
2196 ret
= index_create_file(stream
->path_name
, stream
->channel_name
,
2197 relayd_uid
, relayd_gid
, stream
->tracefile_size
,
2198 stream
->tracefile_count_current
);
2200 /* This will close the stream's index fd if one. */
2201 relay_index_free_safe(index
);
2204 stream
->index_fd
= ret
;
2206 index
->fd
= stream
->index_fd
;
2207 index
->index_data
.offset
= data_offset
;
2209 if (index_created
) {
2211 * Try to add the relay index object to the hash table. If an object
2212 * already exist, destroy back the index created and set the data.
2214 relay_index_add(index
, &wr_index
);
2216 /* Copy back data from the created index. */
2217 wr_index
->fd
= index
->fd
;
2218 wr_index
->to_close_fd
= index
->to_close_fd
;
2219 wr_index
->index_data
.offset
= data_offset
;
2223 /* The index already exists so write it on disk. */
2227 /* Do we have a writable ready index to write on disk. */
2229 ret
= relay_index_write(wr_index
->fd
, wr_index
);
2233 stream
->total_index_received
++;
2234 stream
->indexes_in_flight
--;
2235 assert(stream
->indexes_in_flight
>= 0);
2243 * relay_process_data: Process the data received on the data socket
2246 int relay_process_data(struct relay_connection
*conn
)
2248 int ret
= 0, rotate_index
= 0;
2250 struct relay_stream
*stream
;
2251 struct lttcomm_relayd_data_hdr data_hdr
;
2253 uint64_t net_seq_num
;
2255 struct relay_session
*session
;
2259 ret
= conn
->sock
->ops
->recvmsg(conn
->sock
, &data_hdr
,
2260 sizeof(struct lttcomm_relayd_data_hdr
), 0);
2263 /* Orderly shutdown. Not necessary to print an error. */
2264 DBG("Socket %d did an orderly shutdown", conn
->sock
->fd
);
2266 ERR("Unable to receive data header on sock %d", conn
->sock
->fd
);
2272 stream_id
= be64toh(data_hdr
.stream_id
);
2275 stream
= stream_find_by_id(relay_streams_ht
, stream_id
);
2278 goto end_rcu_unlock
;
2281 session
= session_find_by_id(conn
->sessions_ht
, stream
->session_id
);
2284 data_size
= be32toh(data_hdr
.data_size
);
2285 if (data_buffer_size
< data_size
) {
2288 tmp_data_ptr
= realloc(data_buffer
, data_size
);
2289 if (!tmp_data_ptr
) {
2290 ERR("Allocating data buffer");
2293 goto end_rcu_unlock
;
2295 data_buffer
= tmp_data_ptr
;
2296 data_buffer_size
= data_size
;
2298 memset(data_buffer
, 0, data_size
);
2300 net_seq_num
= be64toh(data_hdr
.net_seq_num
);
2302 DBG3("Receiving data of size %u for stream id %" PRIu64
" seqnum %" PRIu64
,
2303 data_size
, stream_id
, net_seq_num
);
2304 ret
= conn
->sock
->ops
->recvmsg(conn
->sock
, data_buffer
, data_size
, 0);
2307 /* Orderly shutdown. Not necessary to print an error. */
2308 DBG("Socket %d did an orderly shutdown", conn
->sock
->fd
);
2311 goto end_rcu_unlock
;
2314 /* Check if a rotation is needed. */
2315 if (stream
->tracefile_size
> 0 &&
2316 (stream
->tracefile_size_current
+ data_size
) >
2317 stream
->tracefile_size
) {
2318 struct relay_viewer_stream
*vstream
;
2321 new_id
= (stream
->tracefile_count_current
+ 1) %
2322 stream
->tracefile_count
;
2324 * When we wrap-around back to 0, we start overwriting old
2327 if (!stream
->tracefile_overwrite
&& new_id
== 0) {
2328 stream
->tracefile_overwrite
= 1;
2330 pthread_mutex_lock(&stream
->viewer_stream_rotation_lock
);
2331 if (stream
->tracefile_overwrite
) {
2332 stream
->oldest_tracefile_id
=
2333 (stream
->oldest_tracefile_id
+ 1) %
2334 stream
->tracefile_count
;
2336 vstream
= viewer_stream_find_by_id(stream
->stream_handle
);
2339 * The viewer is reading a file about to be
2340 * overwritten. Close the FDs it is
2341 * currently using and let it handle the fault.
2343 if (vstream
->tracefile_count_current
== new_id
) {
2344 pthread_mutex_lock(&vstream
->overwrite_lock
);
2345 vstream
->abort_flag
= 1;
2346 pthread_mutex_unlock(&vstream
->overwrite_lock
);
2347 DBG("Streaming side setting abort_flag on stream %s_%" PRIu64
"\n",
2348 stream
->channel_name
, new_id
);
2349 } else if (vstream
->tracefile_count_current
==
2350 stream
->tracefile_count_current
) {
2352 * The reader and writer were in the
2353 * same trace file, inform the viewer
2354 * that no new index will ever be added
2357 vstream
->close_write_flag
= 1;
2360 ret
= utils_rotate_stream_file(stream
->path_name
, stream
->channel_name
,
2361 stream
->tracefile_size
, stream
->tracefile_count
,
2362 relayd_uid
, relayd_gid
, stream
->fd
,
2363 &(stream
->tracefile_count_current
), &stream
->fd
);
2364 pthread_mutex_unlock(&stream
->viewer_stream_rotation_lock
);
2366 ERR("Rotating stream output file");
2367 goto end_rcu_unlock
;
2369 /* Reset current size because we just perform a stream rotation. */
2370 stream
->tracefile_size_current
= 0;
2375 * Index are handled in protocol version 2.4 and above. Also, snapshot and
2376 * index are NOT supported.
2378 if (session
->minor
>= 4 && !session
->snapshot
) {
2379 ret
= handle_index_data(stream
, net_seq_num
, rotate_index
);
2381 goto end_rcu_unlock
;
2385 /* Write data to stream output fd. */
2386 size_ret
= lttng_write(stream
->fd
, data_buffer
, data_size
);
2387 if (size_ret
< data_size
) {
2388 ERR("Relay error writing data to file");
2390 goto end_rcu_unlock
;
2393 DBG2("Relay wrote %d bytes to tracefile for stream id %" PRIu64
,
2394 ret
, stream
->stream_handle
);
2396 ret
= write_padding_to_file(stream
->fd
, be32toh(data_hdr
.padding_size
));
2398 goto end_rcu_unlock
;
2400 stream
->tracefile_size_current
+= data_size
+ be32toh(data_hdr
.padding_size
);
2402 stream
->prev_seq
= net_seq_num
;
2404 try_close_stream(session
, stream
);
2413 void cleanup_connection_pollfd(struct lttng_poll_event
*events
, int pollfd
)
2419 (void) lttng_poll_del(events
, pollfd
);
2421 ret
= close(pollfd
);
2423 ERR("Closing pollfd %d", pollfd
);
2427 static void destroy_connection(struct lttng_ht
*relay_connections_ht
,
2428 struct relay_connection
*conn
)
2430 assert(relay_connections_ht
);
2433 connection_delete(relay_connections_ht
, conn
);
2435 /* For the control socket, we try to destroy the session. */
2436 if (conn
->type
== RELAY_CONTROL
&& conn
->session
) {
2437 destroy_session(conn
->session
, conn
->sessions_ht
);
2440 connection_destroy(conn
);
2444 * This thread does the actual work
2447 void *relay_thread_worker(void *data
)
2449 int ret
, err
= -1, last_seen_data_fd
= -1;
2451 struct relay_connection
*conn
;
2452 struct lttng_poll_event events
;
2453 struct lttng_ht
*relay_connections_ht
;
2454 struct lttng_ht_iter iter
;
2455 struct lttcomm_relayd_hdr recv_hdr
;
2456 struct relay_local_data
*relay_ctx
= (struct relay_local_data
*) data
;
2457 struct lttng_ht
*sessions_ht
= relay_ctx
->sessions_ht
;
2458 struct relay_index
*index
;
2460 DBG("[thread] Relay worker started");
2462 rcu_register_thread();
2464 health_register(health_relayd
, HEALTH_RELAYD_TYPE_WORKER
);
2466 if (testpoint(relayd_thread_worker
)) {
2467 goto error_testpoint
;
2470 health_code_update();
2472 /* table of connections indexed on socket */
2473 relay_connections_ht
= lttng_ht_new(0, LTTNG_HT_TYPE_ULONG
);
2474 if (!relay_connections_ht
) {
2475 goto relay_connections_ht_error
;
2478 /* Tables of received indexes indexed by index handle and net_seq_num. */
2479 indexes_ht
= lttng_ht_new(0, LTTNG_HT_TYPE_TWO_U64
);
2481 goto indexes_ht_error
;
2484 ret
= create_thread_poll_set(&events
, 2);
2486 goto error_poll_create
;
2489 ret
= lttng_poll_add(&events
, relay_conn_pipe
[0], LPOLLIN
| LPOLLRDHUP
);
2496 int idx
= -1, i
, seen_control
= 0, last_notdel_data_fd
= -1;
2498 health_code_update();
2500 /* Infinite blocking call, waiting for transmission */
2501 DBG3("Relayd worker thread polling...");
2502 health_poll_entry();
2503 ret
= lttng_poll_wait(&events
, -1);
2507 * Restart interrupted system call.
2509 if (errno
== EINTR
) {
2518 * Process control. The control connection is prioritised so we don't
2519 * starve it with high throughout put tracing data on the data
2522 for (i
= 0; i
< nb_fd
; i
++) {
2523 /* Fetch once the poll data */
2524 uint32_t revents
= LTTNG_POLL_GETEV(&events
, i
);
2525 int pollfd
= LTTNG_POLL_GETFD(&events
, i
);
2527 health_code_update();
2530 /* No activity for this FD (poll implementation). */
2534 /* Thread quit pipe has been closed. Killing thread. */
2535 ret
= check_thread_quit_pipe(pollfd
, revents
);
2541 /* Inspect the relay conn pipe for new connection */
2542 if (pollfd
== relay_conn_pipe
[0]) {
2543 if (revents
& (LPOLLERR
| LPOLLHUP
| LPOLLRDHUP
)) {
2544 ERR("Relay connection pipe error");
2546 } else if (revents
& LPOLLIN
) {
2547 ret
= lttng_read(relay_conn_pipe
[0], &conn
, sizeof(conn
));
2551 conn
->sessions_ht
= sessions_ht
;
2552 connection_init(conn
);
2553 lttng_poll_add(&events
, conn
->sock
->fd
,
2554 LPOLLIN
| LPOLLRDHUP
);
2556 lttng_ht_add_unique_ulong(relay_connections_ht
,
2559 DBG("Connection socket %d added", conn
->sock
->fd
);
2563 conn
= connection_find_by_sock(relay_connections_ht
, pollfd
);
2564 /* If not found, there is a synchronization issue. */
2567 if (revents
& (LPOLLERR
| LPOLLHUP
| LPOLLRDHUP
)) {
2568 cleanup_connection_pollfd(&events
, pollfd
);
2569 destroy_connection(relay_connections_ht
, conn
);
2570 if (last_seen_data_fd
== pollfd
) {
2571 last_seen_data_fd
= last_notdel_data_fd
;
2573 } else if (revents
& LPOLLIN
) {
2574 if (conn
->type
== RELAY_CONTROL
) {
2575 ret
= conn
->sock
->ops
->recvmsg(conn
->sock
, &recv_hdr
,
2576 sizeof(recv_hdr
), 0);
2578 /* Connection closed */
2579 cleanup_connection_pollfd(&events
, pollfd
);
2580 destroy_connection(relay_connections_ht
, conn
);
2581 DBG("Control connection closed with %d", pollfd
);
2583 ret
= relay_process_control(&recv_hdr
, conn
);
2585 /* Clear the session on error. */
2586 cleanup_connection_pollfd(&events
, pollfd
);
2587 destroy_connection(relay_connections_ht
, conn
);
2588 DBG("Connection closed with %d", pollfd
);
2594 * Flag the last seen data fd not deleted. It will be
2595 * used as the last seen fd if any fd gets deleted in
2598 last_notdel_data_fd
= pollfd
;
2601 ERR("Unknown poll events %u for sock %d", revents
, pollfd
);
2608 * The last loop handled a control request, go back to poll to make
2609 * sure we prioritise the control socket.
2615 if (last_seen_data_fd
>= 0) {
2616 for (i
= 0; i
< nb_fd
; i
++) {
2617 int pollfd
= LTTNG_POLL_GETFD(&events
, i
);
2619 health_code_update();
2621 if (last_seen_data_fd
== pollfd
) {
2628 /* Process data connection. */
2629 for (i
= idx
+ 1; i
< nb_fd
; i
++) {
2630 /* Fetch the poll data. */
2631 uint32_t revents
= LTTNG_POLL_GETEV(&events
, i
);
2632 int pollfd
= LTTNG_POLL_GETFD(&events
, i
);
2634 health_code_update();
2637 /* No activity for this FD (poll implementation). */
2641 /* Skip the command pipe. It's handled in the first loop. */
2642 if (pollfd
== relay_conn_pipe
[0]) {
2647 conn
= connection_find_by_sock(relay_connections_ht
, pollfd
);
2649 /* Skip it. Might be removed before. */
2654 if (revents
& LPOLLIN
) {
2655 if (conn
->type
!= RELAY_DATA
) {
2660 ret
= relay_process_data(conn
);
2661 /* Connection closed */
2663 cleanup_connection_pollfd(&events
, pollfd
);
2664 destroy_connection(relay_connections_ht
, conn
);
2665 DBG("Data connection closed with %d", pollfd
);
2667 * Every goto restart call sets the last seen fd where
2668 * here we don't really care since we gracefully
2669 * continue the loop after the connection is deleted.
2672 /* Keep last seen port. */
2673 last_seen_data_fd
= pollfd
;
2680 last_seen_data_fd
= -1;
2683 /* Normal exit, no error */
2688 lttng_poll_clean(&events
);
2690 /* Cleanup reamaining connection object. */
2692 cds_lfht_for_each_entry(relay_connections_ht
->ht
, &iter
.iter
, conn
,
2694 health_code_update();
2695 destroy_connection(relay_connections_ht
, conn
);
2700 cds_lfht_for_each_entry(indexes_ht
->ht
, &iter
.iter
, index
,
2702 health_code_update();
2703 relay_index_delete(index
);
2704 relay_index_free_safe(index
);
2707 lttng_ht_destroy(indexes_ht
);
2709 lttng_ht_destroy(relay_connections_ht
);
2710 relay_connections_ht_error
:
2711 /* Close relay conn pipes */
2712 utils_close_pipe(relay_conn_pipe
);
2714 DBG("Thread exited with error");
2716 DBG("Worker thread cleanup complete");
2721 ERR("Health error occurred in %s", __func__
);
2723 health_unregister(health_relayd
);
2724 rcu_unregister_thread();
2730 * Create the relay command pipe to wake thread_manage_apps.
2731 * Closed in cleanup().
2733 static int create_relay_conn_pipe(void)
2737 ret
= utils_create_pipe_cloexec(relay_conn_pipe
);
2745 int main(int argc
, char **argv
)
2747 int ret
= 0, retval
= 0;
2749 struct relay_local_data
*relay_ctx
= NULL
;
2751 /* Parse arguments */
2753 if (set_options(argc
, argv
)) {
2758 if (set_signal_handler()) {
2763 /* Try to create directory if -o, --output is specified. */
2764 if (opt_output_path
) {
2765 if (*opt_output_path
!= '/') {
2766 ERR("Please specify an absolute path for -o, --output PATH");
2771 ret
= utils_mkdir_recursive(opt_output_path
, S_IRWXU
| S_IRWXG
,
2774 ERR("Unable to create %s", opt_output_path
);
2781 if (opt_daemon
|| opt_background
) {
2784 ret
= lttng_daemonize(&child_ppid
, &recv_child_signal
,
2792 * We are in the child. Make sure all other file
2793 * descriptors are closed, in case we are called with
2794 * more opened file descriptors than the standard ones.
2796 for (i
= 3; i
< sysconf(_SC_OPEN_MAX
); i
++) {
2802 /* Initialize thread health monitoring */
2803 health_relayd
= health_app_create(NR_HEALTH_RELAYD_TYPES
);
2804 if (!health_relayd
) {
2805 PERROR("health_app_create error");
2807 goto exit_health_app_create
;
2810 /* Create thread quit pipe */
2811 if (init_thread_quit_pipe()) {
2813 goto exit_init_data
;
2816 /* We need those values for the file/dir creation. */
2817 relayd_uid
= getuid();
2818 relayd_gid
= getgid();
2820 /* Check if daemon is UID = 0 */
2821 if (relayd_uid
== 0) {
2822 if (control_uri
->port
< 1024 || data_uri
->port
< 1024 || live_uri
->port
< 1024) {
2823 ERR("Need to be root to use ports < 1024");
2825 goto exit_init_data
;
2829 /* Setup the thread apps communication pipe. */
2830 if (create_relay_conn_pipe()) {
2832 goto exit_init_data
;
2835 /* Init relay command queue. */
2836 cds_wfcq_init(&relay_conn_queue
.head
, &relay_conn_queue
.tail
);
2838 /* Set up max poll set size */
2839 lttng_poll_set_max_size();
2841 /* Initialize communication library */
2843 lttcomm_inet_init();
2845 relay_ctx
= zmalloc(sizeof(struct relay_local_data
));
2847 PERROR("relay_ctx");
2849 goto exit_init_data
;
2852 /* tables of sessions indexed by session ID */
2853 relay_ctx
->sessions_ht
= lttng_ht_new(0, LTTNG_HT_TYPE_U64
);
2854 if (!relay_ctx
->sessions_ht
) {
2856 goto exit_init_data
;
2859 /* tables of streams indexed by stream ID */
2860 relay_streams_ht
= lttng_ht_new(0, LTTNG_HT_TYPE_U64
);
2861 if (!relay_streams_ht
) {
2863 goto exit_init_data
;
2866 /* tables of streams indexed by stream ID */
2867 viewer_streams_ht
= lttng_ht_new(0, LTTNG_HT_TYPE_U64
);
2868 if (!viewer_streams_ht
) {
2870 goto exit_init_data
;
2873 ret
= utils_create_pipe(health_quit_pipe
);
2876 goto exit_health_quit_pipe
;
2879 /* Create thread to manage the client socket */
2880 ret
= pthread_create(&health_thread
, NULL
,
2881 thread_manage_health
, (void *) NULL
);
2884 PERROR("pthread_create health");
2886 goto exit_health_thread
;
2889 /* Setup the dispatcher thread */
2890 ret
= pthread_create(&dispatcher_thread
, NULL
,
2891 relay_thread_dispatcher
, (void *) NULL
);
2894 PERROR("pthread_create dispatcher");
2896 goto exit_dispatcher_thread
;
2899 /* Setup the worker thread */
2900 ret
= pthread_create(&worker_thread
, NULL
,
2901 relay_thread_worker
, (void *) relay_ctx
);
2904 PERROR("pthread_create worker");
2906 goto exit_worker_thread
;
2909 /* Setup the listener thread */
2910 ret
= pthread_create(&listener_thread
, NULL
,
2911 relay_thread_listener
, (void *) NULL
);
2914 PERROR("pthread_create listener");
2916 goto exit_listener_thread
;
2919 ret
= relayd_live_create(live_uri
, relay_ctx
);
2921 ERR("Starting live viewer threads");
2927 * This is where we start awaiting program completion (e.g. through
2928 * signal that asks threads to teardown).
2931 ret
= relayd_live_join();
2937 ret
= pthread_join(listener_thread
, &status
);
2940 PERROR("pthread_join listener_thread");
2944 exit_listener_thread
:
2945 ret
= pthread_join(worker_thread
, &status
);
2948 PERROR("pthread_join worker_thread");
2953 ret
= pthread_join(dispatcher_thread
, &status
);
2956 PERROR("pthread_join dispatcher_thread");
2959 exit_dispatcher_thread
:
2961 ret
= pthread_join(health_thread
, &status
);
2964 PERROR("pthread_join health_thread");
2969 utils_close_pipe(health_quit_pipe
);
2970 exit_health_quit_pipe
:
2973 health_app_destroy(health_relayd
);
2974 exit_health_app_create
:
2976 relayd_cleanup(relay_ctx
);