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// Copyright Vespa.ai. Licensed under the terms of the Apache 2.0 license. See LICENSE in the project root.
#pragma once
#include "i_resource_usage_listener.h"
#include "resource_usage.h"
#include <memory>
namespace vespalib { class IDestructorCallback; }
namespace storage::spi {
/*
* Class for listening to resource usage updates.
*/
class ResourceUsageListener : public IResourceUsageListener
{
ResourceUsage _usage;
std::unique_ptr<vespalib::IDestructorCallback> _register_guard;
public:
ResourceUsageListener();
~ResourceUsageListener() override;
void update_resource_usage(const ResourceUsage& resource_usage) override;
const ResourceUsage& get_usage() const noexcept { return _usage; }
void set_register_guard(std::unique_ptr<vespalib::IDestructorCallback> register_guard);
void reset();
};
}
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