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 #ifdef __cplusplus
  19 extern "C" {
  20 #endif
  21
  22 struct lttng_condition_buffer_usage {
  23         struct lttng_condition parent;
  24         struct {
  25                 bool set;
  26                 uint64_t value;
  27         } threshold_bytes;
  28         struct {
  29                 bool set;
  30                 double value;
  31         } threshold_ratio;
  32         char *session_name;
  33         char *channel_name;
  34         struct {
  35                 bool set;
  36                 enum lttng_domain_type type;
  37         } domain;
  38 };
  39
  40 struct lttng_condition_buffer_usage_comm {
  41         uint8_t threshold_set_in_bytes;
  42         uint64_t threshold_bytes;
  43         double threshold_ratio;
  44         /* Both lengths include the trailing \0. */
  45         uint32_t session_name_len;
  46         uint32_t channel_name_len;
  47         /* enum lttng_domain_type */
  48         int8_t domain_type;
  49         /* session and channel names. */
  50         char names[];
  51 } LTTNG_PACKED;
  52
  53 struct lttng_evaluation_buffer_usage {
  54         struct lttng_evaluation parent;
  55         uint64_t buffer_use;
  56         uint64_t buffer_capacity;
  57 };
  58
  59 struct lttng_evaluation_buffer_usage_comm {
  60         uint64_t buffer_use;
  61         uint64_t buffer_capacity;
  62 } LTTNG_PACKED;
  63
  64 struct lttng_evaluation *lttng_evaluation_buffer_usage_create(
  65                 enum lttng_condition_type type, uint64_t use,
  66                 uint64_t capacity);
  67
  68 ssize_t lttng_condition_buffer_usage_low_create_from_payload(
  69                 struct lttng_payload_view *view,
  70                 struct lttng_condition **condition);
  71
  72 ssize_t lttng_condition_buffer_usage_high_create_from_payload(
  73                 struct lttng_payload_view *view,
  74                 struct lttng_condition **condition);
  75
  76 ssize_t lttng_evaluation_buffer_usage_low_create_from_payload(
  77                 struct lttng_payload_view *view,
  78                 struct lttng_evaluation **evaluation);
  79
  80 ssize_t lttng_evaluation_buffer_usage_high_create_from_payload(
  81                 struct lttng_payload_view *view,
  82                 struct lttng_evaluation **evaluation);
  83
  84 #ifdef __cplusplus
  85 }
  86 #endif
  87
  88 #endif /* LTTNG_CONDITION_BUFFER_USAGE_INTERNAL_H */