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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 <cstddef>
#include <iosfwd>
namespace vespalib {
/**
* Represents an address space with number of bytes/entries used
* and the limit number of bytes/entries this address space can represent.
*/
class AddressSpace
{
private:
size_t _used;
size_t _dead;
size_t _limit;
public:
AddressSpace();
AddressSpace(size_t used_, size_t dead_, size_t limit_);
size_t used() const { return _used; }
size_t dead() const { return _dead; }
size_t limit() const { return _limit; }
double usage() const {
if (_limit > 0) {
return (double)(_used - _dead) / (double)_limit;
}
return 0;
}
bool operator==(const AddressSpace &rhs) const {
return _used == rhs._used && _dead == rhs._dead && _limit == rhs._limit;
}
};
std::ostream &operator << (std::ostream &out, const AddressSpace &rhs);
}
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