2 * Copyright (C) 2017 - Jérémie Galarneau <jeremie.galarneau@efficios.com>
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.
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
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
18 #ifndef LTTNG_NOTIFICATION_H
19 #define LTTNG_NOTIFICATION_H
25 struct lttng_condition
;
26 struct lttng_evaluation
;
27 struct lttng_notification
;
30 * Get a notification's condition.
32 * The notification retains the ownership of both the condition and evaluation
33 * objects. Hence, it is not valid to access those objects after the destruction
34 * of their associated notification.
36 * The caller should check the condition's type in order to use the appropriate
37 * specialized functions to access the condition's properties.
39 * Returns an lttng_condition object on success, NULL on error.
41 extern const struct lttng_condition
*lttng_notification_get_condition(
42 struct lttng_notification
*notification
);
45 * Get a notification's condition's evaluation.
47 * The notification retains the ownership of the evaluation object. Hence, it is
48 * not valid to access that object after the destruction of its associated
51 * The caller should check the evaluation's type in order to use the appropriate
52 * specialized functions to access the evaluation's properties.
54 * Returns an lttng_evaluation object on success, NULL on error.
56 extern const struct lttng_evaluation
*lttng_notification_get_evaluation(
57 struct lttng_notification
*notification
);
60 * Destroys (frees) a notification. The notification's condition and evaluation
61 * are destroyed as a side-effect.
63 extern void lttng_notification_destroy(struct lttng_notification
*notification
);
69 #endif /* LTTNG_NOTIFICATION_H */
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