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b8aa1682 JD |
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 | ||
7717e361 MD |
19 | #ifndef LTTNG_RELAYD_H |
20 | #define LTTNG_RELAYD_H | |
b8aa1682 JD |
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 { | |
b8aa1682 | 30 | struct cds_wfq_queue queue; |
7717e361 | 31 | int32_t futex; |
b8aa1682 JD |
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; | |
b8aa1682 JD |
45 | }; |
46 | ||
47 | /* | |
48 | * Represents a stream in the relay | |
49 | */ | |
50 | struct relay_stream { | |
51 | uint64_t stream_handle; | |
173af62f | 52 | uint64_t prev_seq; /* previous data sequence number encountered */ |
7717e361 | 53 | struct lttng_ht_node_ulong stream_n; |
b8aa1682 | 54 | struct relay_session *session; |
9d1bbf21 | 55 | struct rcu_head rcu_node; |
7717e361 | 56 | int fd; |
173af62f DG |
57 | |
58 | /* Information telling us when to close the stream */ | |
59 | unsigned int close_flag:1; | |
60 | uint64_t last_net_seq_num; | |
b8aa1682 JD |
61 | }; |
62 | ||
63 | /* | |
64 | * Internal structure to map a socket with the corresponding session. | |
65 | * A hashtable indexed on the socket FD is used for the lookups. | |
66 | */ | |
67 | struct relay_command { | |
68 | struct lttcomm_sock *sock; | |
7717e361 | 69 | struct relay_session *session; |
b8aa1682 JD |
70 | struct cds_wfq_node node; |
71 | struct lttng_ht_node_ulong sock_n; | |
9d1bbf21 | 72 | struct rcu_head rcu_node; |
b8aa1682 | 73 | enum connection_type type; |
c5b6f4f0 | 74 | unsigned int version_check_done:1; |
b8aa1682 JD |
75 | }; |
76 | ||
7717e361 | 77 | #endif /* LTTNG_RELAYD_H */ |