src/hotspot/share/gc/g1/g1SurvivorRegions.hpp
author sangheki
Mon, 08 Apr 2019 12:15:40 -0700
changeset 54467 0c5d713cf43f
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child 59062 6530de931b8e
permissions -rw-r--r--
8218049: Survivor MemoryMXBean used() size granularity is region based Reviewed-by: tschatzl, kbarrett
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/*
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 * Copyright (c) 2015, 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_GC_G1_G1SURVIVORREGIONS_HPP
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#define SHARE_GC_G1_G1SURVIVORREGIONS_HPP
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#include "runtime/globals.hpp"
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template <typename T>
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class GrowableArray;
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class HeapRegion;
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class G1SurvivorRegions {
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private:
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  GrowableArray<HeapRegion*>* _regions;
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  volatile size_t             _used_bytes;
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public:
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  G1SurvivorRegions();
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  void add(HeapRegion* hr);
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  void convert_to_eden();
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  void clear();
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  uint length() const;
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  const GrowableArray<HeapRegion*>* regions() const {
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    return _regions;
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  }
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  // Used bytes of all survivor regions.
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  size_t used_bytes() const { return _used_bytes; }
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  void add_used_bytes(size_t used_bytes);
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};
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#endif // SHARE_GC_G1_G1SURVIVORREGIONS_HPP