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