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

   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.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 #ifdef __cplusplus
  20 extern "C" {
  21 #endif
  22
  23 struct lttng_capture_descriptor {
  24         struct lttng_event_expr *event_expression;
  25         struct lttng_bytecode *bytecode;
  26 };
  27
  28 struct lttng_condition_event_rule_matches {
  29         struct lttng_condition parent;
  30         struct lttng_event_rule *rule;
  31
  32         /*
  33          * Internal use only.
  34          * Error accounting counter index.
  35          */
  36         LTTNG_OPTIONAL(uint64_t) error_counter_index;
  37
  38         /* Array of `struct lttng_capture_descriptor *`. */
  39         struct lttng_dynamic_pointer_array capture_descriptors;
  40 };
  41
  42 struct lttng_evaluation_event_rule_matches {
  43         struct lttng_evaluation parent;
  44
  45         /* MessagePack-encoded captured event field values. */
  46         struct lttng_dynamic_buffer capture_payload;
  47
  48         /*
  49          * The content of this array event field value is the decoded
  50          * version of `capture_payload` above.
  51          *
  52          * This is a cache: it's not serialized/deserialized in
  53          * communications from/to the library and the session daemon.
  54          */
  55         struct lttng_event_field_value *captured_values;
  56 };
  57
  58 ssize_t lttng_condition_event_rule_matches_create_from_payload(
  59                 struct lttng_payload_view *view,
  60                 struct lttng_condition **condition);
  61
  62 enum lttng_condition_status
  63 lttng_condition_event_rule_matches_borrow_rule_mutable(
  64                 const struct lttng_condition *condition,
  65                 struct lttng_event_rule **rule);
  66
  67 void lttng_condition_event_rule_matches_set_error_counter_index(
  68                 struct lttng_condition *condition,
  69                 uint64_t error_counter_index);
  70
  71 uint64_t lttng_condition_event_rule_matches_get_error_counter_index(
  72                 const struct lttng_condition *condition);
  73
  74 struct lttng_evaluation *lttng_evaluation_event_rule_matches_create(
  75                 const struct lttng_condition_event_rule_matches *condition,
  76                 const char *capture_payload,
  77                 size_t capture_payload_size,
  78                 bool decode_capture_payload);
  79
  80 ssize_t lttng_evaluation_event_rule_matches_create_from_payload(
  81                 const struct lttng_condition_event_rule_matches *condition,
  82                 struct lttng_payload_view *view,
  83                 struct lttng_evaluation **_evaluation);
  84
  85 enum lttng_error_code
  86 lttng_condition_event_rule_matches_generate_capture_descriptor_bytecode(
  87                 struct lttng_condition *condition);
  88
  89 const struct lttng_bytecode *
  90 lttng_condition_event_rule_matches_get_capture_bytecode_at_index(
  91                 const struct lttng_condition *condition, unsigned int index);
  92
  93 #ifdef __cplusplus
  94 }
  95 #endif
  96
  97 #endif /* LTTNG_CONDITION_EVENT_RULE_MATCHES_INTERNAL_H */