1 /*
   2  * Copyright (c) 2016, 2019, Oracle and/or its affiliates. All rights reserved.
   3  * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.
   4  *
   5  * This code is free software; you can redistribute it and/or modify it
   6  * under the terms of the GNU General Public License version 2 only, as
   7  * published by the Free Software Foundation.
   8  *
   9  * This code is distributed in the hope that it will be useful, but WITHOUT
  10  * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
  11  * FITNESS FOR A PARTICULAR PURPOSE.  See the GNU General Public License
  12  * version 2 for more details (a copy is included in the LICENSE file that
  13  * accompanied this code).
  14  *
  15  * You should have received a copy of the GNU General Public License version
  16  * 2 along with this work; if not, write to the Free Software Foundation,
  17  * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA.
  18  *
  19  * Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA
  20  * or visit www.oracle.com if you need additional information or have any
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  22  *
  23  */
  24 
  25 #ifndef SHARE_GC_G1_G1HEAPTRANSITION_HPP
  26 #define SHARE_GC_G1_G1HEAPTRANSITION_HPP
  27 
  28 #include "gc/shared/plab.hpp"
  29 
  30 class G1CollectedHeap;
  31 
  32 class G1HeapTransition {
  33   struct Data {
  34     size_t _eden_length;
  35     size_t _survivor_length;
  36     size_t _old_length;
  37     size_t _archive_length;
  38     size_t _humongous_length;
  39     size_t _metaspace_used_bytes;
  40 
  41     Data(G1CollectedHeap* g1_heap);
  42   };
  43 
  44   G1CollectedHeap* _g1_heap;
  45   Data _before;
  46 
  47 public:
  48   G1HeapTransition(G1CollectedHeap* g1_heap);
  49 
  50   void print();
  51 };
  52 
  53 #endif // SHARE_GC_G1_G1HEAPTRANSITION_HPP