event-rule: introduce event rule tracepoint
[lttng-tools.git] / include / lttng / condition / evaluation-internal.h
1 /*
2 * Copyright (C) 2017 Jérémie Galarneau <jeremie.galarneau@efficios.com>
3 *
4 * SPDX-License-Identifier: LGPL-2.1-only
5 *
6 */
7
8 #ifndef LTTNG_EVALUATION_INTERNAL_H
9 #define LTTNG_EVALUATION_INTERNAL_H
10
11 #include <lttng/condition/evaluation.h>
12 #include <common/macros.h>
13 #include <stdbool.h>
14 #include <sys/types.h>
15
16 struct lttng_payload;
17 struct lttng_payload_view;
18
19 typedef void (*evaluation_destroy_cb)(struct lttng_evaluation *evaluation);
20 typedef int (*evaluation_serialize_cb)(
21 const struct lttng_evaluation *evaluation,
22 struct lttng_payload *payload);
23
24 struct lttng_evaluation_comm {
25 /* enum lttng_condition_type type */
26 int8_t type;
27 char payload[];
28 } LTTNG_PACKED;
29
30 struct lttng_evaluation {
31 enum lttng_condition_type type;
32 evaluation_serialize_cb serialize;
33 evaluation_destroy_cb destroy;
34 };
35
36 LTTNG_HIDDEN
37 void lttng_evaluation_init(struct lttng_evaluation *evaluation,
38 enum lttng_condition_type type);
39
40 LTTNG_HIDDEN
41 ssize_t lttng_evaluation_create_from_payload(struct lttng_payload_view *view,
42 struct lttng_evaluation **evaluation);
43
44 LTTNG_HIDDEN
45 int lttng_evaluation_serialize(const struct lttng_evaluation *evaluation,
46 struct lttng_payload *payload);
47
48 #endif /* LTTNG_EVALUATION_INTERNAL_H */
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