/*

 * Copyright (c) 2017, 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.

 *

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#ifndef SHARE_GC_G1_G1FULLGCCOMPACTIONPOINT_HPP

#define SHARE_GC_G1_G1FULLGCCOMPACTIONPOINT_HPP

#include "memory/allocation.hpp"

#include "oops/oopsHierarchy.hpp"

#include "utilities/growableArray.hpp"

class HeapRegion;

class G1FullGCCompactionPoint : public CHeapObj<mtGC> {

  HeapRegion* _current_region;

  HeapWord*   _threshold;

  HeapWord*   _compaction_top;

  GrowableArray<HeapRegion*>* _compaction_regions;

  GrowableArrayIterator<HeapRegion*> _compaction_region_iterator;

  bool object_will_fit(size_t size);

  void initialize_values(bool init_threshold);

  void switch_region();

  HeapRegion* next_region();

public:

  G1FullGCCompactionPoint();

  ~G1FullGCCompactionPoint();

  bool has_regions();

  bool is_initialized();

  void initialize(HeapRegion* hr, bool init_threshold);

  void update();

  void forward(oop object, size_t size);

  void add(HeapRegion* hr);

  void merge(G1FullGCCompactionPoint* other);

  HeapRegion* remove_last();

  HeapRegion* current_region();

  GrowableArray<HeapRegion*>* regions();

};

#endif // SHARE_GC_G1_G1FULLGCCOMPACTIONPOINT_HPP