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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 | |
d3e2ba59 | 23 | #include <limits.h> |
b8aa1682 JD |
24 | #include <urcu.h> |
25 | #include <urcu/wfqueue.h> | |
a4baae1b | 26 | #include <urcu/list.h> |
d3e2ba59 | 27 | |
0f907de1 | 28 | #include <common/hashtable/hashtable.h> |
50adc264 | 29 | #include <common/index/ctf-index.h> |
b8aa1682 | 30 | |
d3e2ba59 | 31 | #include "ctf-trace.h" |
2f8f53af | 32 | #include "session.h" |
d3e2ba59 | 33 | |
b8aa1682 JD |
34 | /* |
35 | * Queue used to enqueue relay requests | |
36 | */ | |
37 | struct relay_cmd_queue { | |
b8aa1682 | 38 | struct cds_wfq_queue queue; |
7717e361 | 39 | int32_t futex; |
b8aa1682 JD |
40 | }; |
41 | ||
42 | enum connection_type { | |
d5200de1 DG |
43 | RELAY_DATA = 1, |
44 | RELAY_CONTROL = 2, | |
45 | RELAY_VIEWER_COMMAND = 3, | |
46 | RELAY_VIEWER_NOTIFICATION = 4, | |
b8aa1682 JD |
47 | }; |
48 | ||
b8aa1682 JD |
49 | /* |
50 | * Internal structure to map a socket with the corresponding session. | |
51 | * A hashtable indexed on the socket FD is used for the lookups. | |
52 | */ | |
53 | struct relay_command { | |
54 | struct lttcomm_sock *sock; | |
7717e361 | 55 | struct relay_session *session; |
b8aa1682 JD |
56 | struct cds_wfq_node node; |
57 | struct lttng_ht_node_ulong sock_n; | |
9d1bbf21 | 58 | struct rcu_head rcu_node; |
b8aa1682 | 59 | enum connection_type type; |
0f907de1 JD |
60 | /* protocol version to use for this session */ |
61 | uint32_t major; | |
62 | uint32_t minor; | |
b92fdc2b | 63 | uint64_t session_id; |
a4baae1b JD |
64 | struct cds_list_head recv_head; |
65 | unsigned int version_check_done:1; | |
d3e2ba59 JD |
66 | }; |
67 | ||
68 | struct relay_local_data { | |
69 | struct lttng_ht *sessions_ht; | |
b8aa1682 JD |
70 | }; |
71 | ||
0f907de1 JD |
72 | extern char *opt_output_path; |
73 | ||
2a174661 DG |
74 | /* |
75 | * Contains stream indexed by ID. This is important since many commands lookup | |
76 | * streams only by ID thus also keeping them in this hash table makes the | |
77 | * search O(1) instead of iterating over the ctf_traces_ht of the session. | |
78 | */ | |
d3e2ba59 | 79 | extern struct lttng_ht *relay_streams_ht; |
2a174661 | 80 | |
92c6ca54 | 81 | extern struct lttng_ht *viewer_streams_ht; |
0a6518b0 | 82 | extern struct lttng_ht *indexes_ht; |
d3e2ba59 | 83 | |
65931c8b MD |
84 | extern const char *tracing_group_name; |
85 | ||
cd60b05a JG |
86 | extern const char * const config_section_name; |
87 | ||
3fd27398 | 88 | void lttng_relay_notify_ready(void); |
d3e2ba59 | 89 | |
7717e361 | 90 | #endif /* LTTNG_RELAYD_H */ |