SoW-2019-0002: Dynamic Snapshot
[lttng-tools.git] / include / lttng / action / group.h
1 /*
2 * Copyright (C) 2019 EfficiOS, inc.
3 *
4 * This library is free software; you can redistribute it and/or modify it
5 * under the terms of the GNU Lesser General Public License, version 2.1 only,
6 * as published by the Free Software Foundation.
7 *
8 * This library 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 Lesser General Public License
11 * for more details.
12 *
13 * You should have received a copy of the GNU Lesser General Public License
14 * along with this library; if not, write to the Free Software Foundation,
15 * Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA
16 */
17
18 #ifndef LTTNG_ACTION_GROUP_H
19 #define LTTNG_ACTION_GROUP_H
20
21 struct lttng_action;
22 struct lttng_action_group;
23
24 #ifdef __cplusplus
25 extern "C" {
26 #endif
27
28 /*
29 * Create a newly allocated action group object.
30 *
31 * Returns a new action group on success, NULL on failure. This action group
32 * must be destroyed using lttng_action_group_destroy().
33 */
34 extern struct lttng_action *lttng_action_group_create(void);
35
36 /*
37 * Add an action to an lttng_action object of type LTTNG_ACTION_GROUP.
38 *
39 * The group takes ownership of the action.
40 */
41 extern enum lttng_action_status lttng_action_group_add_action(
42 struct lttng_action *group, struct lttng_action *action);
43
44 extern enum lttng_action_status lttng_action_group_get_count(
45 const struct lttng_action *group, unsigned int *count);
46
47 extern const struct lttng_action *lttng_action_group_get_at_index_const(
48 const struct lttng_action *group,
49 unsigned int index);
50
51 #ifdef __cplusplus
52 }
53 #endif
54
55 #endif /* LTTNG_ACTION_GROUP_H */
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