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#ifndef SHARE_MEMORY_METASPACESTATS_HPP
#define SHARE_MEMORY_METASPACESTATS_HPP
#include "utilities/globalDefinitions.hpp"
// Data holder classes for metaspace statistics.
//
// - MetaspaceStats: keeps reserved, committed and used byte counters;
// retrieve with MetaspaceUtils::get_statistics(MetadataType) for either class space
// or non-class space
//
// - MetaspaceCombinedStats: keeps reserved, committed and used byte counters, separately for both class- and non-class-space;
// retrieve with MetaspaceUtils::get_combined_statistics()
// (Note: just for NMT these objects need to be mutable)
class MetaspaceStats {
size_t _reserved;
size_t _committed;
size_t _used;
public :
MetaspaceStats() : _reserved(0 ), _committed(0 ), _used(0 ) {}
MetaspaceStats(size_t r, size_t c, size_t u) : _reserved(r), _committed(c), _used(u) {}
size_t used() const { return _used; }
size_t committed() const { return _committed; }
size_t reserved() const { return _reserved; }
};
// Class holds combined statistics for both non-class and class space.
class MetaspaceCombinedStats : public MetaspaceStats {
MetaspaceStats _cstats; // class space stats
MetaspaceStats _ncstats; // non-class space stats
public :
MetaspaceCombinedStats() {}
MetaspaceCombinedStats(const MetaspaceStats& cstats, const MetaspaceStats& ncstats) :
MetaspaceStats(cstats.reserved() + ncstats.reserved(),
cstats.committed() + ncstats.committed(),
cstats.used() + ncstats.used()),
_cstats(cstats), _ncstats(ncstats)
{}
const MetaspaceStats& class_space_stats() const { return _cstats; }
const MetaspaceStats& non_class_space_stats() const { return _ncstats; }
size_t class_used() const { return _cstats.used(); }
size_t class_committed() const { return _cstats.committed(); }
size_t class_reserved() const { return _cstats.reserved(); }
size_t non_class_used() const { return _ncstats.used(); }
size_t non_class_committed() const { return _ncstats.committed(); }
size_t non_class_reserved() const { return _ncstats.reserved(); }
};
#endif // SHARE_MEMORY_METASPACESTATS_HPP
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