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 * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.
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 *
 * 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_G1HEAPTRANSITION_HPP
#define SHARE_GC_G1_G1HEAPTRANSITION_HPP

#include "gc/shared/plab.hpp"
#include "memory/metaspace/metaspaceSizesSnapshot.hpp"

class G1CollectedHeap;

class G1HeapTransition {
  struct Data {
    size_t _eden_length;
    size_t _survivor_length;
    size_t _old_length;
    size_t _archive_length;
    size_t _humongous_length;
    const metaspace::MetaspaceSizesSnapshot _meta_sizes;

    // Only includes current eden regions.
    uint* _eden_length_per_node;
    // Only includes current survivor regions.
    uint* _survivor_length_per_node;

    Data(G1CollectedHeap* g1_heap);
    ~Data();
  };

  G1CollectedHeap* _g1_heap;
  Data _before;

public:
  G1HeapTransition(G1CollectedHeap* g1_heap);

  void print();
};

#endif // SHARE_GC_G1_G1HEAPTRANSITION_HPP