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 #include "precompiled.hpp"

    26 #include "gc/g1/g1NUMA.hpp"

    27 #include "gc/g1/g1RegionsOnNodes.hpp"

    28 #include "gc/g1/heapRegion.hpp"

    29 

    30 G1RegionsOnNodes::G1RegionsOnNodes() : _count_per_node(NULL), _numa(G1NUMA::numa()) {

    31   _count_per_node = NEW_C_HEAP_ARRAY(uint, _numa->num_active_nodes(), mtGC);

    32   clear();

    33 }

    34 

    35 G1RegionsOnNodes::~G1RegionsOnNodes() {

    36   FREE_C_HEAP_ARRAY(uint, _count_per_node);

    37 }

    38 

    39 uint G1RegionsOnNodes::add(HeapRegion* hr) {

    40   uint node_index = hr->node_index();

    41 

    42   // Update only if the node index is valid.

    43   if (node_index < _numa->num_active_nodes()) {

    44     *(_count_per_node + node_index) += 1;

    45     return node_index;

    46   }

    47 

    48   return G1NUMA::UnknownNodeIndex;

    49 }

    50 

    51 void G1RegionsOnNodes::clear() {

    52   for (uint i = 0; i < _numa->num_active_nodes(); i++) {

    53     _count_per_node[i] = 0;

    54   }

    55 }

    56 

    57 uint G1RegionsOnNodes::count(uint node_index) const {

    58   return _count_per_node[node_index];

    59 }