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// Copyright Yahoo. Licensed under the terms of the Apache 2.0 license. See LICENSE in the project root.
#pragma once
#include <cstddef>
namespace proton {
/**
* Class containing transient disk and memory usage (in bytes).
*/
class TransientResourceUsage {
private:
size_t _disk;
size_t _memory;
public:
TransientResourceUsage() noexcept
: _disk(0),
_memory(0)
{}
TransientResourceUsage(size_t disk_in,
size_t memory_in) noexcept
: _disk(disk_in),
_memory(memory_in)
{}
size_t disk() const noexcept { return _disk; }
size_t memory() const noexcept { return _memory; }
void merge(const TransientResourceUsage& rhs) {
_disk += rhs.disk();
_memory += rhs.memory();
}
};
/**
* Interface class providing a snapshot of transient resource usage.
*
* E.g. the memory used by the memory index and extra disk needed for running disk index fusion.
* This provides the total transient resource usage for the components this provider encapsulates.
*/
class ITransientResourceUsageProvider {
public:
virtual ~ITransientResourceUsageProvider() = default;
virtual TransientResourceUsage get_transient_resource_usage() const = 0;
};
}
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