1 /*

     2  * Copyright (c) 2015, 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_VM_GC_G1_YOUNGLIST_HPP

    26 #define SHARE_VM_GC_G1_YOUNGLIST_HPP

    27 

    28 #include "memory/allocation.hpp"

    29 #include "runtime/globals.hpp"

    30 

    31 template <typename T>

    32 class GrowableArray;

    33 

    34 class G1SurvivorRegions VALUE_OBJ_CLASS_SPEC {

    35 private:

    36   GrowableArray<HeapRegion*>* _regions;

    37 

    38 public:

    39   G1SurvivorRegions();

    40 

    41   void add(HeapRegion* hr);

    42 

    43   void convert_to_eden();

    44 

    45   void clear();

    46 

    47   uint length() const;

    48 

    49   const GrowableArray<HeapRegion*>* regions() const {

    50     return _regions;

    51   }

    52 };

    53 

    54 class G1EdenRegions VALUE_OBJ_CLASS_SPEC {

    55 private:

    56   int _length;

    57 

    58 public:

    59   G1EdenRegions() : _length(0) {}

    60 

    61   void add(HeapRegion* hr);

    62 

    63   void clear() { _length = 0; }

    64 

    65   uint length() const { return _length; }

    66 };

    67 

    68 #endif // SHARE_VM_GC_G1_YOUNGLIST_HPP