include/lttng/condition/event-rule-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_INTERNAL_H
   9 #define LTTNG_CONDITION_EVENT_RULE_INTERNAL_H
  10
  11 #include <lttng/condition/condition-internal.h>
  12 #include <common/buffer-view.h>
  13 #include <common/macros.h>
  14 #include <lttng/condition/evaluation-internal.h>
  15 #include <common/dynamic-array.h>
  16
  17 struct lttng_capture_descriptor {
  18         struct lttng_event_expr *event_expression;
  19         struct lttng_bytecode *bytecode;
  20 };
  21
  22 struct lttng_condition_event_rule {
  23         struct lttng_condition parent;
  24         struct lttng_event_rule *rule;
  25
  26         /* Array of `struct lttng_capture_descriptor *`. */
  27         struct lttng_dynamic_pointer_array capture_descriptors;
  28 };
  29
  30 struct lttng_evaluation_event_rule {
  31         struct lttng_evaluation parent;
  32         char *name;
  33 };
  34
  35 struct lttng_evaluation_event_rule_comm {
  36         /* Includes the null terminator. */
  37         uint32_t trigger_name_length;
  38         /* Trigger name. */
  39         char payload[];
  40 } LTTNG_PACKED;
  41
  42 LTTNG_HIDDEN
  43 ssize_t lttng_condition_event_rule_create_from_payload(
  44                 struct lttng_payload_view *view,
  45                 struct lttng_condition **condition);
  46
  47 LTTNG_HIDDEN
  48 enum lttng_condition_status
  49 lttng_condition_event_rule_borrow_rule_mutable(
  50                 const struct lttng_condition *condition,
  51                 struct lttng_event_rule **rule);
  52
  53 LTTNG_HIDDEN
  54 struct lttng_evaluation *lttng_evaluation_event_rule_create(
  55                 const char* trigger_name);
  56
  57 LTTNG_HIDDEN
  58 ssize_t lttng_evaluation_event_rule_create_from_payload(
  59                 struct lttng_payload_view *view,
  60                 struct lttng_evaluation **_evaluation);
  61
  62 LTTNG_HIDDEN
  63 enum lttng_error_code
  64 lttng_condition_event_rule_generate_capture_descriptor_bytecode(
  65                 struct lttng_condition *condition);
  66
  67 #endif /* LTTNG_CONDITION_EVENT_RULE_INTERNAL_H */