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 <common/buffer-view.hpp>
  12 #include <common/dynamic-array.hpp>
  13 #include <common/macros.hpp>
  14 #include <common/optional.hpp>
  15
  16 #include <lttng/condition/condition-internal.hpp>
  17 #include <lttng/condition/evaluation-internal.hpp>
  18 #include <lttng/event-field-value.h>
  19
  20 struct lttng_capture_descriptor {
  21         struct lttng_event_expr *event_expression;
  22         struct lttng_bytecode *bytecode;
  23 };
  24
  25 struct lttng_condition_event_rule_matches {
  26         struct lttng_condition parent;
  27         struct lttng_event_rule *rule;
  28
  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_matches {
  40         struct lttng_evaluation parent;
  41
  42         /* MessagePack-encoded captured event field values. */
  43         struct lttng_dynamic_buffer capture_payload;
  44
  45         /*
  46          * The content of this array event field value is the decoded
  47          * version of `capture_payload` above.
  48          *
  49          * This is a cache: it's not serialized/deserialized in
  50          * communications from/to the library and the session daemon.
  51          */
  52         struct lttng_event_field_value *captured_values;
  53 };
  54
  55 ssize_t lttng_condition_event_rule_matches_create_from_payload(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(const struct lttng_condition *condition,
  60                                                        struct lttng_event_rule **rule);
  61
  62 void lttng_condition_event_rule_matches_set_error_counter_index(struct lttng_condition *condition,
  63                                                                 uint64_t error_counter_index);
  64
  65 uint64_t
  66 lttng_condition_event_rule_matches_get_error_counter_index(const struct lttng_condition *condition);
  67
  68 struct lttng_evaluation *lttng_evaluation_event_rule_matches_create(
  69         const struct lttng_condition_event_rule_matches *condition,
  70         const char *capture_payload,
  71         size_t capture_payload_size,
  72         bool decode_capture_payload);
  73
  74 ssize_t lttng_evaluation_event_rule_matches_create_from_payload(
  75         const struct lttng_condition_event_rule_matches *condition,
  76         struct lttng_payload_view *view,
  77         struct lttng_evaluation **_evaluation);
  78
  79 enum lttng_error_code lttng_condition_event_rule_matches_generate_capture_descriptor_bytecode(
  80         struct lttng_condition *condition);
  81
  82 const struct lttng_bytecode *lttng_condition_event_rule_matches_get_capture_bytecode_at_index(
  83         const struct lttng_condition *condition, unsigned int index);
  84
  85 #endif /* LTTNG_CONDITION_EVENT_RULE_MATCHES_INTERNAL_H */