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// Copyright Yahoo. Licensed under the terms of the Apache 2.0 license. See LICENSE in the project root.
/**
* \class metrics::MemoryConsumption
* \ingroup metrics
*
* \brief An instance of this class describes memory usage for a set of metrics.
*
* Typically, you ask the memory manager for memory consumption of all metrics.
* An instance of this class is created and sent through all metrics to track
* memory consumption. Tracking may be a bit expensive, so this shouldn't be
* checked too often. Primary use is to detect what parts actually use the most
* memory. Secondary use would be to add it as a metric periodically updated.
*
* The memory consumption object keeps track of various groups of memory users,
* such as to give a good overview of where the memory is used.
*/
#pragma once
#include <vespa/vespalib/util/printable.h>
#include <memory>
namespace metrics {
struct SeenStrings;
struct SnapShotUsage;
class MemoryConsumption : public vespalib::Printable {
public:
using UP = std::unique_ptr<MemoryConsumption>;
uint32_t _consumerCount;
uint32_t _consumerId;
uint32_t _consumerIdUnique;
uint32_t _consumerMetricsInTotal;
uint32_t _consumerMetricIds;
uint32_t _consumerMetricIdsUnique;
uint32_t _consumerMeta;
uint32_t _snapshotSetCount;
uint32_t _snapshotSetMeta;
uint32_t _nameHash;
uint32_t _nameHashStrings;
uint32_t _nameHashUnique;
uint32_t _snapshotCount;
uint32_t _snapshotName;
uint32_t _snapshotNameUnique;
uint32_t _snapshotMeta;
uint32_t _metricCount;
uint32_t _metricMeta;
uint32_t _metricName;
uint32_t _metricNameUnique;
uint32_t _metricPath;
uint32_t _metricPathUnique;
uint32_t _metricDescription;
uint32_t _metricDescriptionUnique;
uint32_t _metricTagCount;
uint32_t _metricTags;
uint32_t _metricTagsUnique;
uint32_t _metricSetCount;
uint32_t _metricSetMeta;
uint32_t _metricSetOrder;
uint32_t _countMetricCount;
uint32_t _countMetricValues;
uint32_t _countMetricMeta;
uint32_t _valueMetricCount;
uint32_t _valueMetricValues;
uint32_t _valueMetricMeta;
uint32_t _sumMetricCount;
uint32_t _sumMetricMeta;
uint32_t _sumMetricParentPath;
uint32_t _sumMetricParentPathUnique;
uint32_t _loadMetricCount;
uint32_t _loadMetricMeta;
uint32_t _totalStringCount;
MemoryConsumption();
~MemoryConsumption();
/** Get memory usage of a string that is not included when doing sizeof */
uint32_t getStringMemoryUsage(const std::string& s, uint32_t& uniqueCount);
uint32_t getStringMemoryUsage(const vespalib::string& s, uint32_t& uniqueCount);
void addSnapShotUsage(const std::string& name, uint32_t usage);
uint32_t getTotalMemoryUsage() const;
void print(std::ostream& out, bool verbose, const std::string& indent) const override;
static std::string bval(uint32_t bytes);
private:
std::unique_ptr<SeenStrings> _seenStrings;
std::unique_ptr<SnapShotUsage> _snapShotUsage;
};
} // metrics
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