Build a list of triggers applying to a given session on creation
[lttng-tools.git] / src / bin / lttng-sessiond / notification-thread-internal.h
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1/*
2 * Copyright (C) 2017 - Jérémie Galarneau <jeremie.galarneau@efficios.com>
3 *
4 * This program is free software; you can redistribute it and/or modify it
5 * under the terms of the GNU General Public License, version 2 only, as
6 * published by the Free Software Foundation.
7 *
8 * This program is distributed in the hope that it will be useful, but WITHOUT
9 * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
10 * FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License for
11 * more details.
12 *
13 * You should have received a copy of the GNU General Public License along with
14 * this program; if not, write to the Free Software Foundation, Inc., 51
15 * Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA.
16 */
17
18#ifndef NOTIFICATION_THREAD_INTERNAL_H
19#define NOTIFICATION_THREAD_INTERNAL_H
20
21#include <lttng/ref-internal.h>
22#include <urcu/rculfhash.h>
23#include <unistd.h>
24
25struct channel_key {
26 uint64_t key;
27 enum lttng_domain_type domain;
28};
29
30struct session_info {
31 struct lttng_ref ref;
32 char *name;
33 uid_t uid;
34 gid_t gid;
35 /*
36 * Back-ref (weak) to all channels in this session.
37 * The hashtable's key is a hash of (struct channel_key) and
38 * the value is of type (struct channel_info *).
39 */
40 struct cds_lfht *channel_infos_ht;
ea9a44f0 41 struct lttng_session_trigger_list *trigger_list;
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42 /* Node in the notification thread state's sessions_ht. */
43 struct cds_lfht_node sessions_ht_node;
e8360425 44 uint64_t consumed_data_size;
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45};
46
47struct channel_info {
48 struct channel_key key;
49 char *name;
50 uint64_t capacity;
51 /*
52 * A channel info holds a reference (lttng_ref) on session_info.
53 * session_info, in return, holds a weak reference to the channel.
54 */
55 struct session_info *session_info;
56 /* Node in the notification thread state's channels_ht. */
57 struct cds_lfht_node channels_ht_node;
58 /* Node in the session_info's channels_ht. */
59 struct cds_lfht_node session_info_channels_ht_node;
60};
61
62#endif /* NOTIFICATION_THREAD_INTERNAL_H */
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