2 * Copyright (C) 2012 - Julien Desfossez <jdesfossez@efficios.com>
3 * David Goulet <dgoulet@efficios.com>
5 * This program is free software; you can redistribute it and/or modify
6 * it under the terms of the GNU General Public License, version 2 only,
7 * as published by the Free Software Foundation.
9 * This program is distributed in the hope that it will be useful, but WITHOUT
10 * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
11 * FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License for
14 * You should have received a copy of the GNU General Public License along
15 * with this program; if not, write to the Free Software Foundation, Inc.,
16 * 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA.
19 #ifndef LTTNG_RELAYD_H
20 #define LTTNG_RELAYD_H
24 #include <urcu/wfqueue.h>
25 #include <common/hashtable/hashtable.h>
26 #include <common/index/lttng-index.h>
29 * Queue used to enqueue relay requests
31 struct relay_cmd_queue
{
32 struct cds_wfq_queue queue
;
36 enum connection_type
{
42 * Represents a session for the relay point of view
44 struct relay_session
{
46 * This session id is used to identify a set of stream to a tracing session
47 * but also make sure we have a unique session id associated with a session
48 * daemon which can provide multiple data source.
51 struct lttcomm_sock
*sock
;
55 * Represents a stream in the relay
58 uint64_t stream_handle
;
59 uint64_t prev_seq
; /* previous data sequence number encountered */
60 struct lttng_ht_node_ulong stream_n
;
61 struct relay_session
*session
;
62 struct rcu_head rcu_node
;
64 /* FD on which to write the index data. */
69 /* on-disk circular buffer of tracefiles */
70 uint64_t tracefile_size
;
71 uint64_t tracefile_size_current
;
72 uint64_t tracefile_count
;
73 uint64_t tracefile_count_current
;
75 /* Information telling us when to close the stream */
76 unsigned int close_flag
:1;
77 uint64_t last_net_seq_num
;
78 /* Indicate if the stream was initialized for a data pending command. */
79 unsigned int data_pending_check_done
:1;
83 * Internal structure to map a socket with the corresponding session.
84 * A hashtable indexed on the socket FD is used for the lookups.
86 struct relay_command
{
87 struct lttcomm_sock
*sock
;
88 struct relay_session
*session
;
89 struct cds_wfq_node node
;
90 struct lttng_ht_node_ulong sock_n
;
91 struct rcu_head rcu_node
;
92 enum connection_type type
;
93 unsigned int version_check_done
:1;
94 /* protocol version to use for this session */
99 extern char *opt_output_path
;
101 #endif /* LTTNG_RELAYD_H */