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

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