src/hotspot/share/gc/g1/g1StringDedupStat.hpp
author zgu
Thu, 14 Jun 2018 09:59:21 -0400
changeset 50574 fa727a4d7934
parent 47216 71c04702a3d5
child 53244 9807daeb47c4
permissions -rw-r--r--
8203641: Refactor String Deduplication into shared Summary: Allows string deduplication to be shared among different collectors Reviewed-by: tschatzl, rkennke
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/*
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 * Copyright (c) 2018, 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_VM_GC_G1_G1STRINGDEDUPSTAT_HPP
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#define SHARE_VM_GC_G1_G1STRINGDEDUPSTAT_HPP
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#include "gc/shared/stringdedup/stringDedupStat.hpp"
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// G1 extension for gathering/reporting generational statistics
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class G1StringDedupStat : public StringDedupStat {
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private:
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  uintx  _deduped_young;
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  uintx  _deduped_young_bytes;
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  uintx  _deduped_old;
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  uintx  _deduped_old_bytes;
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  G1CollectedHeap* const _heap;
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public:
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  G1StringDedupStat();
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  void deduped(oop obj, uintx bytes);
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  void add(const StringDedupStat* const stat);
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  void print_statistics(bool total) const;
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  void reset();
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};
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#endif // SHARE_VM_GC_G1_G1STRINGDEDUPSTAT_HPP