include/lttng/condition/buffer-usage-internal.hpp

   1 /*
   2  * Copyright (C) 2017 Jérémie Galarneau <jeremie.galarneau@efficios.com>
   3  *
   4  * SPDX-License-Identifier: LGPL-2.1-only
   5  *
   6  */
   7
   8 #ifndef LTTNG_CONDITION_BUFFER_USAGE_INTERNAL_H
   9 #define LTTNG_CONDITION_BUFFER_USAGE_INTERNAL_H
  10
  11 #include "common/buffer-view.hpp"
  12
  13 #include <common/macros.hpp>
  14
  15 #include <lttng/condition/buffer-usage.h>
  16 #include <lttng/condition/condition-internal.hpp>
  17 #include <lttng/condition/evaluation-internal.hpp>
  18 #include <lttng/domain.h>
  19
  20 struct lttng_condition_buffer_usage {
  21         struct lttng_condition parent;
  22         struct {
  23                 bool set;
  24                 uint64_t value;
  25         } threshold_bytes;
  26         struct {
  27                 bool set;
  28                 double value;
  29         } threshold_ratio;
  30         char *session_name;
  31         char *channel_name;
  32         struct {
  33                 bool set;
  34                 enum lttng_domain_type type;
  35         } domain;
  36 };
  37
  38 struct lttng_condition_buffer_usage_comm {
  39         uint8_t threshold_set_in_bytes;
  40         uint64_t threshold_bytes;
  41         double threshold_ratio;
  42         /* Both lengths include the trailing \0. */
  43         uint32_t session_name_len;
  44         uint32_t channel_name_len;
  45         /* enum lttng_domain_type */
  46         int8_t domain_type;
  47         /* session and channel names. */
  48         char names[];
  49 } LTTNG_PACKED;
  50
  51 struct lttng_evaluation_buffer_usage {
  52         struct lttng_evaluation parent;
  53         uint64_t buffer_use;
  54         uint64_t buffer_capacity;
  55 };
  56
  57 struct lttng_evaluation_buffer_usage_comm {
  58         uint64_t buffer_use;
  59         uint64_t buffer_capacity;
  60 } LTTNG_PACKED;
  61
  62 struct lttng_evaluation *lttng_evaluation_buffer_usage_create(enum lttng_condition_type type,
  63                                                               uint64_t use,
  64                                                               uint64_t capacity);
  65
  66 ssize_t lttng_condition_buffer_usage_low_create_from_payload(struct lttng_payload_view *view,
  67                                                              struct lttng_condition **condition);
  68
  69 ssize_t lttng_condition_buffer_usage_high_create_from_payload(struct lttng_payload_view *view,
  70                                                               struct lttng_condition **condition);
  71
  72 ssize_t lttng_evaluation_buffer_usage_low_create_from_payload(struct lttng_payload_view *view,
  73                                                               struct lttng_evaluation **evaluation);
  74
  75 ssize_t
  76 lttng_evaluation_buffer_usage_high_create_from_payload(struct lttng_payload_view *view,
  77                                                        struct lttng_evaluation **evaluation);
  78
  79 #endif /* LTTNG_CONDITION_BUFFER_USAGE_INTERNAL_H */