/*
* Copyright (c) 2019, Oracle and/or its affiliates. All rights reserved.
* DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.
*
* This code is free software; you can redistribute it and/or modify it
* under the terms of the GNU General Public License version 2 only, as
* published by the Free Software Foundation.
*
* This code is distributed in the hope that it will be useful, but WITHOUT
* ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
* FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License
* version 2 for more details (a copy is included in the LICENSE file that
* accompanied this code).
*
* You should have received a copy of the GNU General Public License version
* 2 along with this work; if not, write to the Free Software Foundation,
* Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA.
*
* Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA
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*/
#ifndef SHARE_UTILITIES_TABLE_STATISTICS_HPP
#define SHARE_UTILITIES_TABLE_STATISTICS_HPP
#include "memory/allocation.hpp"
#include "utilities/debug.hpp"
#include "utilities/globalDefinitions.hpp"
#include "utilities/numberSeq.hpp"
class TableRateStatistics : CHeapObj<mtStatistics> {
friend class TableStatistics;
private:
volatile size_t _added_items;
volatile size_t _removed_items;
jlong _time_stamp;
double _seconds_stamp;
size_t _added_items_stamp;
size_t _added_items_stamp_prev;
size_t _removed_items_stamp;
size_t _removed_items_stamp_prev;
public:
TableRateStatistics();
~TableRateStatistics();
void add();
void remove();
protected:
void stamp();
float get_add_rate();
float get_remove_rate();
};
class TableStatistics : CHeapObj<mtStatistics> {
public:
size_t _literal_bytes;
size_t _number_of_buckets;
size_t _number_of_entries;
size_t _maximum_bucket_size;
float _average_bucket_size;
float _variance_of_bucket_size;
float _stddev_of_bucket_size;
size_t _bucket_bytes;
size_t _entry_bytes;
size_t _total_footprint;
size_t _bucket_size;
size_t _entry_size;
float _add_rate;
float _remove_rate;
TableStatistics();
TableStatistics(TableRateStatistics& rate_stats, NumberSeq summary, size_t literal_bytes, size_t bucket_bytes, size_t node_bytes);
~TableStatistics();
void print(outputStream* st, const char *table_name);
};
#endif // SHARE_UTILITIES_TABLE_STATISTICS_HPP