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10405
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1 /*
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2 * Copyright (c) 2012, 2013, Oracle and/or its affiliates. All rights reserved.
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3 * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.
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4 *
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5 * This code is free software; you can redistribute it and/or modify it
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6 * under the terms of the GNU General Public License version 2 only, as
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7 * published by the Free Software Foundation.
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8 *
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9 * This code is distributed in the hope that it will be useful, but WITHOUT
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10 * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
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11 * FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License
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12 * version 2 for more details (a copy is included in the LICENSE file that
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13 * accompanied this code).
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14 *
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15 * You should have received a copy of the GNU General Public License version
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16 * 2 along with this work; if not, write to the Free Software Foundation,
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17 * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA.
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18 *
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19 * Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA
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20 * or visit www.oracle.com if you need additional information or have any
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21 * questions.
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22 *
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23 */
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24
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25 #ifndef SHARE_VM_MEMORY_REFRERENCETYPE_HPP
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26 #define SHARE_VM_MEMORY_REFRERENCETYPE_HPP
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27
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28 #include "utilities/debug.hpp"
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29
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30 // ReferenceType is used to distinguish between java/lang/ref/Reference subclasses
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31
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32 enum ReferenceType {
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33 REF_NONE, // Regular class
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34 REF_OTHER, // Subclass of java/lang/ref/Reference, but not subclass of one of the classes below
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35 REF_SOFT, // Subclass of java/lang/ref/SoftReference
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36 REF_WEAK, // Subclass of java/lang/ref/WeakReference
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37 REF_FINAL, // Subclass of java/lang/ref/FinalReference
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38 REF_PHANTOM // Subclass of java/lang/ref/PhantomReference
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39 };
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40
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41 #endif // SHARE_VM_MEMORY_REFRERENCETYPE_HPP
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