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>
27 * Queue used to enqueue relay requests
29 struct relay_cmd_queue
{
30 struct cds_wfq_queue queue
;
34 enum connection_type
{
40 * Represents a session for the relay point of view
42 struct relay_session
{
44 struct lttcomm_sock
*sock
;
45 unsigned int version_check_done
:1;
49 * Represents a stream in the relay
52 uint64_t stream_handle
;
53 uint64_t prev_seq
; /* previous data sequence number encountered */
54 struct lttng_ht_node_ulong stream_n
;
55 struct relay_session
*session
;
56 struct rcu_head rcu_node
;
59 /* Information telling us when to close the stream */
60 unsigned int close_flag
:1;
61 uint64_t last_net_seq_num
;
65 * Internal structure to map a socket with the corresponding session.
66 * A hashtable indexed on the socket FD is used for the lookups.
68 struct relay_command
{
69 struct lttcomm_sock
*sock
;
70 struct relay_session
*session
;
71 struct cds_wfq_node node
;
72 struct lttng_ht_node_ulong sock_n
;
73 struct rcu_head rcu_node
;
74 enum connection_type type
;
77 #endif /* LTTNG_RELAYD_H */