/*

 * Copyright (c) 2012, 2016, Oracle and/or its affiliates. All rights reserved.

 * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.

 *

 * This code is free software; you can redistribute it and/or modify it

 * under the terms of the GNU General Public License version 2 only, as

 * published by the Free Software Foundation.

 *

 * This code is distributed in the hope that it will be useful, but WITHOUT

 * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or

 * FITNESS FOR A PARTICULAR PURPOSE.  See the GNU General Public License

 * version 2 for more details (a copy is included in the LICENSE file that

 * accompanied this code).

 *

 * You should have received a copy of the GNU General Public License version

 * 2 along with this work; if not, write to the Free Software Foundation,

 * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA.

 *

 * Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA

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 *

 */

#ifndef SHARE_VM_MEMORY_REFERENCETYPE_HPP

#define SHARE_VM_MEMORY_REFERENCETYPE_HPP

#include "utilities/debug.hpp"

// ReferenceType is used to distinguish between java/lang/ref/Reference subclasses

enum ReferenceType {

  REF_NONE,      // Regular class

  REF_OTHER,     // Subclass of java/lang/ref/Reference, but not subclass of one of the classes below

  REF_SOFT,      // Subclass of java/lang/ref/SoftReference

  REF_WEAK,      // Subclass of java/lang/ref/WeakReference

  REF_FINAL,     // Subclass of java/lang/ref/FinalReference

  REF_PHANTOM    // Subclass of java/lang/ref/PhantomReference

};

#endif // SHARE_VM_MEMORY_REFERENCETYPE_HPP