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c3e68e71 JR |
1 | /* |
2 | * Copyright (C) 2019 Jonathan Rajotte <jonathan.rajotte-julien@efficios.com> | |
3 | * | |
4 | * SPDX-License-Identifier: LGPL-2.1-only | |
5 | * | |
6 | */ | |
7 | ||
8 | #ifndef LTTNG_CONDITION_ON_EVENT_INTERNAL_H | |
9 | #define LTTNG_CONDITION_ON_EVENT_INTERNAL_H | |
10 | ||
11 | #include <lttng/condition/condition-internal.h> | |
12 | #include <common/buffer-view.h> | |
13 | #include <common/macros.h> | |
14 | #include <common/optional.h> | |
15 | #include <lttng/condition/evaluation-internal.h> | |
16 | #include <common/dynamic-array.h> | |
17 | #include <lttng/event-field-value.h> | |
18 | ||
19 | struct lttng_capture_descriptor { | |
20 | struct lttng_event_expr *event_expression; | |
21 | struct lttng_bytecode *bytecode; | |
22 | }; | |
23 | ||
24 | struct lttng_condition_on_event { | |
25 | struct lttng_condition parent; | |
26 | struct lttng_event_rule *rule; | |
27 | ||
28 | LTTNG_OPTIONAL(uint64_t) error_count; | |
29 | /* | |
30 | * Internal use only. | |
31 | * Error accounting counter index. | |
32 | */ | |
33 | LTTNG_OPTIONAL(uint64_t) error_counter_index; | |
34 | ||
35 | /* Array of `struct lttng_capture_descriptor *`. */ | |
36 | struct lttng_dynamic_pointer_array capture_descriptors; | |
37 | }; | |
38 | ||
39 | struct lttng_evaluation_event_rule { | |
40 | struct lttng_evaluation parent; | |
41 | char *name; | |
42 | ||
43 | /* MessagePack-encoded captured event field values. */ | |
44 | struct lttng_dynamic_buffer capture_payload; | |
45 | ||
46 | /* | |
47 | * The content of this array event field value is the decoded | |
48 | * version of `capture_payload` above. | |
49 | * | |
50 | * This is a cache: it's not serialized/deserialized in | |
51 | * communications from/to the library and the session daemon. | |
52 | */ | |
53 | struct lttng_event_field_value *captured_values; | |
54 | }; | |
55 | ||
56 | struct lttng_evaluation_event_rule_comm { | |
57 | /* Includes the null terminator. */ | |
58 | uint32_t trigger_name_length; | |
59 | /* Trigger name. */ | |
60 | char payload[]; | |
61 | } LTTNG_PACKED; | |
62 | ||
63 | LTTNG_HIDDEN | |
64 | ssize_t lttng_condition_on_event_create_from_payload( | |
65 | struct lttng_payload_view *view, | |
66 | struct lttng_condition **condition); | |
67 | ||
68 | LTTNG_HIDDEN | |
69 | enum lttng_condition_status | |
70 | lttng_condition_on_event_borrow_rule_mutable( | |
71 | const struct lttng_condition *condition, | |
72 | struct lttng_event_rule **rule); | |
73 | ||
74 | LTTNG_HIDDEN | |
75 | void lttng_condition_on_event_set_error_counter_index( | |
76 | struct lttng_condition *condition, uint64_t error_counter_index); | |
77 | ||
78 | LTTNG_HIDDEN | |
79 | uint64_t lttng_condition_on_event_get_error_counter_index( | |
80 | const struct lttng_condition *condition); | |
81 | ||
82 | LTTNG_HIDDEN | |
83 | uint64_t lttng_condition_on_event_get_error_count( | |
84 | const struct lttng_condition *condition); | |
85 | ||
86 | LTTNG_HIDDEN | |
87 | void lttng_condition_on_event_set_error_count(struct lttng_condition *condition, | |
88 | uint64_t error_count); | |
89 | ||
90 | LTTNG_HIDDEN | |
91 | struct lttng_evaluation *lttng_evaluation_event_rule_create( | |
92 | const struct lttng_condition_on_event *condition, | |
93 | const char* trigger_name, | |
94 | const char *capture_payload, size_t capture_payload_size, | |
95 | bool decode_capture_payload); | |
96 | ||
97 | LTTNG_HIDDEN | |
98 | ssize_t lttng_evaluation_event_rule_create_from_payload( | |
99 | const struct lttng_condition_on_event *condition, | |
100 | struct lttng_payload_view *view, | |
101 | struct lttng_evaluation **_evaluation); | |
102 | ||
103 | LTTNG_HIDDEN | |
104 | enum lttng_error_code | |
105 | lttng_condition_on_event_generate_capture_descriptor_bytecode( | |
106 | struct lttng_condition *condition); | |
107 | ||
108 | LTTNG_HIDDEN | |
109 | const struct lttng_bytecode * | |
110 | lttng_condition_on_event_get_capture_bytecode_at_index( | |
111 | const struct lttng_condition *condition, unsigned int index); | |
112 | ||
113 | #endif /* LTTNG_CONDITION_ON_EVENT_INTERNAL_H */ |