1 /*

     2  * Copyright (c) 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_VM_GC_G1_G1REGIONS_HPP

    26 #define SHARE_VM_GC_G1_G1REGIONS_HPP

    27 

    28 #include "memory/allocation.hpp"

    29 

    30 class G1NUMA;

    31 class HeapRegion;

    32 

    33 // Contains per node index region count

    34 class G1RegionsOnNodes : public StackObj {

    35   volatile uint* _count_per_node;

    36   G1NUMA*        _numa;

    37 

    38 public:

    39   G1RegionsOnNodes();

    40 

    41   ~G1RegionsOnNodes();

    42 

    43   // Increase _count_per_node for the node of given heap region and returns node index.

    44   uint add(HeapRegion* hr);

    45 

    46   void clear();

    47 

    48   uint count(uint node_index) const;

    49 };

    50 

    51 #endif // SHARE_VM_GC_G1_G1REGIONS_HPP