include/lttng/condition/event-rule-matches-internal.hpp

   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_EVENT_RULE_MATCHES_INTERNAL_H
   9 #define LTTNG_CONDITION_EVENT_RULE_MATCHES_INTERNAL_H
  10
  11 #include <lttng/condition/condition-internal.hpp>
  12 #include <common/buffer-view.hpp>
  13 #include <common/macros.hpp>
  14 #include <common/optional.hpp>
  15 #include <lttng/condition/evaluation-internal.hpp>
  16 #include <common/dynamic-array.hpp>
  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_event_rule_matches {
  25         struct lttng_condition parent;
  26         struct lttng_event_rule *rule;
  27
  28         /*
  29          * Internal use only.
  30          * Error accounting counter index.
  31          */
  32         LTTNG_OPTIONAL(uint64_t) error_counter_index;
  33
  34         /* Array of `struct lttng_capture_descriptor *`. */
  35         struct lttng_dynamic_pointer_array capture_descriptors;
  36 };
  37
  38 struct lttng_evaluation_event_rule_matches {
  39         struct lttng_evaluation parent;
  40
  41         /* MessagePack-encoded captured event field values. */
  42         struct lttng_dynamic_buffer capture_payload;
  43
  44         /*
  45          * The content of this array event field value is the decoded
  46          * version of `capture_payload` above.
  47          *
  48          * This is a cache: it's not serialized/deserialized in
  49          * communications from/to the library and the session daemon.
  50          */
  51         struct lttng_event_field_value *captured_values;
  52 };
  53
  54 ssize_t lttng_condition_event_rule_matches_create_from_payload(
  55                 struct lttng_payload_view *view,
  56                 struct lttng_condition **condition);
  57
  58 enum lttng_condition_status
  59 lttng_condition_event_rule_matches_borrow_rule_mutable(
  60                 const struct lttng_condition *condition,
  61                 struct lttng_event_rule **rule);
  62
  63 void lttng_condition_event_rule_matches_set_error_counter_index(
  64                 struct lttng_condition *condition,
  65                 uint64_t error_counter_index);
  66
  67 uint64_t lttng_condition_event_rule_matches_get_error_counter_index(
  68                 const struct lttng_condition *condition);
  69
  70 struct lttng_evaluation *lttng_evaluation_event_rule_matches_create(
  71                 const struct lttng_condition_event_rule_matches *condition,
  72                 const char *capture_payload,
  73                 size_t capture_payload_size,
  74                 bool decode_capture_payload);
  75
  76 ssize_t lttng_evaluation_event_rule_matches_create_from_payload(
  77                 const struct lttng_condition_event_rule_matches *condition,
  78                 struct lttng_payload_view *view,
  79                 struct lttng_evaluation **_evaluation);
  80
  81 enum lttng_error_code
  82 lttng_condition_event_rule_matches_generate_capture_descriptor_bytecode(
  83                 struct lttng_condition *condition);
  84
  85 const struct lttng_bytecode *
  86 lttng_condition_event_rule_matches_get_capture_bytecode_at_index(
  87                 const struct lttng_condition *condition, unsigned int index);
  88
  89 #endif /* LTTNG_CONDITION_EVENT_RULE_MATCHES_INTERNAL_H */