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comparison agent/src/share/classes/sun/jvm/hotspot/runtime/VMObjectFactory.java @ 0:a61af66fc99e jdk7-b24

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author duke
date Sat, 01 Dec 2007 00:00:00 +0000
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1 /*
2 * Copyright 2000 Sun Microsystems, Inc. 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 Sun Microsystems, Inc., 4150 Network Circle, Santa Clara,
20 * CA 95054 USA or visit www.sun.com if you need additional information or
21 * have any questions.
22 *
23 */
24
25 package sun.jvm.hotspot.runtime;
26
27 import java.lang.reflect.*;
28 import sun.jvm.hotspot.debugger.*;
29 import sun.jvm.hotspot.types.*;
30
31 /** <P> This class implements a factory mechanism for the objects
32 created to wrap Addresses. It requires that the class passed in
33 implement a constructor taking with the following signature: </P>
34
35 <P>
36 <CODE> public &lt;Type&gt;(sun.jvm.hotspot.Address)
37 </CODE>
38 </P>
39
40 <P> It is used to write shorter code when wrapping Addresses since
41 null checks are no longer necessary. In addition, it is a central
42 location where a canonicalizing map could be implemented if one
43 were desired (though the current system is designed to not require
44 one.) </P>
45 */
46
47 public class VMObjectFactory {
48 public static Object newObject(Class clazz, Address addr)
49 throws ConstructionException {
50 try {
51 if (addr == null) {
52 return null;
53 }
54
55 Constructor c = clazz.getConstructor(new Class[] {
56 Address.class
57 });
58 return c.newInstance(new Object[] { addr });
59 }
60 catch (Exception e) {
61 throw new ConstructionException(e);
62 }
63 }
64 }