referenceType.hpp revision 4802:f2110083203d 
1/*
2 * Copyright (c) 2012, 2013, 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
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7 * published by the Free Software Foundation.
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10 * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
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14 *
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24
25#ifndef SHARE_VM_MEMORY_REFRERENCETYPE_HPP
26#define SHARE_VM_MEMORY_REFRERENCETYPE_HPP
27
28#include "utilities/debug.hpp"
29
30// ReferenceType is used to distinguish between java/lang/ref/Reference subclasses
31
32enum ReferenceType {
33  REF_NONE,      // Regular class
34  REF_OTHER,     // Subclass of java/lang/ref/Reference, but not subclass of one of the classes below
35  REF_SOFT,      // Subclass of java/lang/ref/SoftReference
36  REF_WEAK,      // Subclass of java/lang/ref/WeakReference
37  REF_FINAL,     // Subclass of java/lang/ref/FinalReference
38  REF_PHANTOM    // Subclass of java/lang/ref/PhantomReference
39};
40
41#endif // SHARE_VM_MEMORY_REFRERENCETYPE_HPP
42