1 /*
   2  * Copyright (c) 2015, 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
  21  * questions.
  22  *
  23  */
  24 
  25 #ifndef SHARE_GC_G1_G1EDENREGIONS_HPP
  26 #define SHARE_GC_G1_G1EDENREGIONS_HPP
  27 
  28 #include "gc/g1/heapRegion.hpp"
  29 #include "runtime/globals.hpp"
  30 #include "utilities/debug.hpp"
  31 
  32 class G1EdenRegions {
  33 private:
  34   int _length;
  35 
  36 public:
  37   G1EdenRegions() : _length(0) {}
  38 
  39   void add(HeapRegion* hr) {
  40     assert(!hr->is_eden(), "should not already be set");
  41     _length++;
  42   }
  43 
  44   void clear() { _length = 0; }
  45 
  46   uint length() const { return _length; }
  47 };
  48 
  49 #endif // SHARE_GC_G1_G1EDENREGIONS_HPP