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>
28 * Queue used to enqueue relay requests
30 struct relay_cmd_queue
{
31 struct cds_wfq_queue queue
;
35 enum connection_type
{
41 * Represents a session for the relay point of view
43 struct relay_session
{
45 * This session id is used to identify a set of stream to a tracing session
46 * but also make sure we have a unique session id associated with a session
47 * daemon which can provide multiple data source.
50 struct lttcomm_sock
*sock
;
54 * Represents a stream in the relay
57 uint64_t stream_handle
;
58 uint64_t prev_seq
; /* previous data sequence number encountered */
59 struct lttng_ht_node_ulong stream_n
;
60 struct relay_session
*session
;
61 struct rcu_head rcu_node
;
66 /* on-disk circular buffer of tracefiles */
67 uint64_t tracefile_size
;
68 uint64_t tracefile_size_current
;
69 uint64_t tracefile_count
;
70 uint64_t tracefile_count_current
;
72 /* Information telling us when to close the stream */
73 unsigned int close_flag
:1;
74 uint64_t last_net_seq_num
;
75 /* Indicate if the stream was initialized for a data pending command. */
76 unsigned int data_pending_check_done
:1;
80 * Internal structure to map a socket with the corresponding session.
81 * A hashtable indexed on the socket FD is used for the lookups.
83 struct relay_command
{
84 struct lttcomm_sock
*sock
;
85 struct relay_session
*session
;
86 struct cds_wfq_node node
;
87 struct lttng_ht_node_ulong sock_n
;
88 struct rcu_head rcu_node
;
89 enum connection_type type
;
90 unsigned int version_check_done
:1;
91 /* protocol version to use for this session */
96 extern char *opt_output_path
;
98 #endif /* LTTNG_RELAYD_H */