SoW-2019-0002: Dynamic Snapshot
[lttng-tools.git] / include / lttng / event-rule / tracepoint-internal.h
1 /*
2 * Copyright (C) 2019 - Jonathan Rajotte-Julien <jonathan.rajotte-julien@efficios.com>
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_EVENT_RULE_TRACEPOINT_INTERNAL_H
19 #define LTTNG_EVENT_RULE_TRACEPOINT_INTERNAL_H
20
21 #include <lttng/event-rule/tracepoint.h>
22 #include <lttng/event-rule/event-rule-internal.h>
23 #include <lttng/domain.h>
24 #include <lttng/event.h>
25 #include <common/buffer-view.h>
26 #include <common/macros.h>
27
28 struct lttng_event_rule_tracepoint {
29 struct lttng_event_rule parent;
30
31 /* Domain */
32 enum lttng_domain_type domain;
33
34 /* Name pattern */
35 char *pattern;
36
37 /* Filter */
38 char *filter_expression;
39
40 /* Loglevel */
41 struct {
42 enum lttng_loglevel_type type;
43 int value;
44 } loglevel;
45
46 /* Exclusions */
47
48 struct {
49 char **values;
50 unsigned int count;
51 } exclusions;
52
53 /* internal use only */
54 struct {
55 char *filter;
56 struct lttng_filter_bytecode *bytecode;
57 } internal_filter;
58 };
59
60 struct lttng_event_rule_tracepoint_comm {
61 /* enum lttng_domain_type */
62 int8_t domain_type;
63 /* enum lttng_event_logleven_type */
64 int8_t loglevel_type;
65 int32_t loglevel_value;
66 uint32_t pattern_len;
67 uint32_t filter_expression_len;
68 uint32_t exclusions_count;
69 uint32_t exclusions_len;
70 /*
71 * pattern, filter expression and exclusions each terminating with '\0'
72 */
73 char payload[];
74 } LTTNG_PACKED;
75
76 LTTNG_HIDDEN
77 ssize_t lttng_event_rule_tracepoint_create_from_buffer(
78 const struct lttng_buffer_view *view,
79 struct lttng_event_rule **rule);
80
81 #endif /* LTTNG_EVENT_RULE_TRACEPOINT_INTERNAL_H */
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