1 /*
 2  * Copyright Amazon.com Inc. 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
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24 
25 #ifndef SHARE_GC_SHENANDOAH_SHENANDOAHCOLLECTIONSETPRESELECTOR_HPP
26 #define SHARE_GC_SHENANDOAH_SHENANDOAHCOLLECTIONSETPRESELECTOR_HPP
27 
28 #include "gc/shenandoah/shenandoahCollectionSet.hpp"
29 #include "memory/resourceArea.hpp"
30 
31 class ShenandoahCollectionSetPreselector : public StackObj {
32   ShenandoahCollectionSet* _cset;
33   bool* _pset;
34   ResourceMark _rm;
35 
36 public:
37   ShenandoahCollectionSetPreselector(ShenandoahCollectionSet* cset, size_t num_regions):
38     _cset(cset) {
39     _pset = NEW_RESOURCE_ARRAY(bool, num_regions);
40     for (unsigned int i = 0; i < num_regions; i++) {
41         _pset[i] = false;
42     }
43     _cset->establish_preselected(_pset);
44   }
45 
46   ~ShenandoahCollectionSetPreselector() {
47     _cset->abandon_preselected();
48   }
49 };
50 
51 #endif // SHARE_GC_SHENANDOAH_SHENANDOAHCOLLECTIONSETPRESELECTOR_HPP