4 * Linux Trace Toolkit Control Library
6 * Copyright (C) 2017 Jérémie Galarneau <jeremie.galarneau@efficios.com>
8 * SPDX-License-Identifier: LGPL-2.1-only
12 #ifndef LTTNG_EVENT_INTERNAL_H
13 #define LTTNG_EVENT_INTERNAL_H
15 #include <common/macros.h>
16 #include <lttng/event.h>
18 struct lttng_event_exclusion
;
19 struct lttng_filter_bytecode
;
20 struct lttng_userspace_probe_location
;
21 struct lttng_dynamic_buffer
;
22 struct lttng_buffer_view
;
24 struct lttng_event_comm
{
33 /* Includes terminator `\0`. */
35 uint32_t exclusion_count
;
36 /* Includes terminator `\0`. */
37 uint32_t filter_expression_len
;
38 uint32_t bytecode_len
;
40 /* Type specific payload. */
41 uint32_t userspace_probe_location_len
;
42 uint32_t lttng_event_probe_attr_len
;
43 uint32_t lttng_event_function_attr_len
;
49 * - char filter_expression[filter_expression_len],
50 * - unsigned char filter_bytecode[bytecode_len],
51 * - userspace probe location [userspace_probe_location_len],
52 * - probe or ftrace based on event type.
58 struct lttng_event_exclusion_comm
{
59 /* Includes terminator `\0`. */
64 struct lttng_event_probe_attr_comm
{
67 /* Includes terminator `\0`. */
68 uint32_t symbol_name_len
;
73 struct lttng_event_function_attr_comm
{
74 /* Includes terminator `\0`. */
75 uint32_t symbol_name_len
;
80 struct lttng_event_extended
{
82 * exclusions and filter_expression are only set when the lttng_event
83 * was created/allocated by a list operation. These two elements must
84 * not be free'd as they are part of the same contiguous buffer that
85 * contains all events returned by the listing.
87 char *filter_expression
;
90 /* Array of strings of fixed LTTNG_SYMBOL_NAME_LEN length. */
93 struct lttng_userspace_probe_location
*probe_location
;
97 struct lttng_event
*lttng_event_copy(const struct lttng_event
*event
);
100 ssize_t
lttng_event_create_from_buffer(const struct lttng_buffer_view
*view
,
101 struct lttng_event
**event
,
102 struct lttng_event_exclusion
**exclusion
,
103 char **filter_expression
,
104 struct lttng_filter_bytecode
**bytecode
,
108 int lttng_event_serialize(const struct lttng_event
*event
,
109 unsigned int exclusion_count
,
110 char **exclusion_list
,
111 char *filter_expression
,
114 struct lttng_dynamic_buffer
*buf
,
118 enum lttng_error_code
lttng_events_create_and_flatten_from_buffer(
119 const struct lttng_buffer_view
*view
,
121 struct lttng_event
**events
);
123 #endif /* LTTNG_EVENT_INTERNAL_H */