Fix: enable-consumer for all domains missing dir
[lttng-tools.git] / src / bin / lttng-relayd / lttng-relayd.h
1 /*
2 * Copyright (C) 2012 - Julien Desfossez <jdesfossez@efficios.com>
3 * David Goulet <dgoulet@efficios.com>
4 *
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.
8 *
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
12 * more details.
13 *
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.
17 */
18
19 #ifndef LTTNG_RELAYD_H
20 #define LTTNG_RELAYD_H
21
22 #define _LGPL_SOURCE
23 #include <urcu.h>
24 #include <urcu/wfqueue.h>
25
26 /*
27 * Queue used to enqueue relay requests
28 */
29 struct relay_cmd_queue {
30 struct cds_wfq_queue queue;
31 int32_t futex;
32 };
33
34 enum connection_type {
35 RELAY_DATA,
36 RELAY_CONTROL,
37 };
38
39 /*
40 * Represents a session for the relay point of view
41 */
42 struct relay_session {
43 uint64_t id;
44 struct lttcomm_sock *sock;
45 unsigned int version_check_done:1;
46 };
47
48 /*
49 * Represents a stream in the relay
50 */
51 struct relay_stream {
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;
57 int fd;
58
59 /* Information telling us when to close the stream */
60 unsigned int close_flag:1;
61 uint64_t last_net_seq_num;
62 };
63
64 /*
65 * Internal structure to map a socket with the corresponding session.
66 * A hashtable indexed on the socket FD is used for the lookups.
67 */
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;
75 };
76
77 #endif /* LTTNG_RELAYD_H */
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