hotspot/src/share/vm/gc_implementation/g1/heapRegionSets.hpp
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7092309: G1: introduce old region set Summary: Keep track of all the old regions in the heap with a heap region set. Reviewed-by: brutisso, johnc
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/*
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 * Copyright (c) 2011, 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_IMPLEMENTATION_G1_HEAPREGIONSETS_HPP
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#define SHARE_VM_GC_IMPLEMENTATION_G1_HEAPREGIONSETS_HPP
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#include "gc_implementation/g1/heapRegionSet.inline.hpp"
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//////////////////// FreeRegionList ////////////////////
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class FreeRegionList : public HeapRegionLinkedList {
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protected:
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  virtual const char* verify_region_extra(HeapRegion* hr);
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  virtual bool regions_humongous() { return false; }
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  virtual bool regions_empty()     { return true;  }
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public:
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  FreeRegionList(const char* name) : HeapRegionLinkedList(name) { }
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};
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//////////////////// MasterFreeRegionList ////////////////////
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class MasterFreeRegionList : public FreeRegionList {
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  virtual const char* verify_region_extra(HeapRegion* hr);
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  virtual bool check_mt_safety();
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public:
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  MasterFreeRegionList(const char* name) : FreeRegionList(name) { }
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};
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//////////////////// SecondaryFreeRegionList ////////////////////
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class SecondaryFreeRegionList : public FreeRegionList {
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protected:
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  virtual bool check_mt_safety();
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public:
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  SecondaryFreeRegionList(const char* name) : FreeRegionList(name) { }
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};
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//////////////////// OldRegionSet ////////////////////
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class OldRegionSet : public HeapRegionSet {
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protected:
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  virtual const char* verify_region_extra(HeapRegion* hr);
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  virtual bool regions_humongous() { return false; }
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  virtual bool regions_empty()     { return false; }
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public:
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  OldRegionSet(const char* name) : HeapRegionSet(name) { }
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};
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//////////////////// MasterOldRegionSet ////////////////////
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class MasterOldRegionSet : public OldRegionSet {
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private:
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protected:
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  virtual bool check_mt_safety();
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  MasterOldRegionSet(const char* name) : OldRegionSet(name) { }
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};
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//////////////////// HumongousRegionSet ////////////////////
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class HumongousRegionSet : public HeapRegionSet {
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protected:
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  virtual const char* verify_region_extra(HeapRegion* hr);
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  virtual bool regions_humongous() { return true;  }
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  virtual bool regions_empty()     { return false; }
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public:
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  HumongousRegionSet(const char* name) : HeapRegionSet(name) { }
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};
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//////////////////// MasterHumongousRegionSet ////////////////////
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class MasterHumongousRegionSet : public HumongousRegionSet {
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  virtual bool check_mt_safety();
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  MasterHumongousRegionSet(const char* name) : HumongousRegionSet(name) { }
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};
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#endif // SHARE_VM_GC_IMPLEMENTATION_G1_HEAPREGIONSETS_HPP