Mercurial > hg > truffle
comparison agent/src/share/classes/sun/jvm/hotspot/runtime/InstanceConstructor.java @ 3939:f6f3bb0ee072
7088955: add C2 IR support to the SA
Reviewed-by: kvn
author | never |
---|---|
date | Sun, 11 Sep 2011 14:48:24 -0700 |
parents | |
children |
comparison
equal
deleted
inserted
replaced
3938:e6b1331a51d2 | 3939:f6f3bb0ee072 |
---|---|
1 /* | |
2 * Copyright (c) 2011, 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 | |
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 | |
20 * or visit www.oracle.com if you need additional information or have any | |
21 * questions. | |
22 * | |
23 */ | |
24 | |
25 package sun.jvm.hotspot.runtime; | |
26 | |
27 import java.util.*; | |
28 import sun.jvm.hotspot.debugger.*; | |
29 import sun.jvm.hotspot.debugger.cdbg.CDebugger; | |
30 import sun.jvm.hotspot.debugger.cdbg.ClosestSymbol; | |
31 import sun.jvm.hotspot.debugger.cdbg.LoadObject; | |
32 import sun.jvm.hotspot.types.*; | |
33 import sun.jvm.hotspot.HotSpotTypeDataBase; | |
34 | |
35 /** Given a pointer to some memory return an appropriate wrapper. | |
36 Various subclasses provide different mechanisms for identifying the | |
37 appropriate wrapper. */ | |
38 | |
39 abstract public class InstanceConstructor<T> { | |
40 /** Instantiate the most-precisely typed wrapper object available | |
41 for the type of the given Address. If no type in the mapping | |
42 matched the type of the Address, throws a WrongTypeException. | |
43 Returns null for a null address (similar behavior to | |
44 VMObjectFactory). */ | |
45 abstract public T instantiateWrapperFor(Address addr) throws WrongTypeException; | |
46 | |
47 protected WrongTypeException newWrongTypeException(Address addr) { | |
48 String message = "No suitable match for type of address " + addr; | |
49 CDebugger cdbg = VM.getVM().getDebugger().getCDebugger(); | |
50 if (cdbg != null) { | |
51 // Most common case: V-table pointer is the first field | |
52 Address vtblPtr = addr.getAddressAt(0); | |
53 LoadObject lo = cdbg.loadObjectContainingPC(vtblPtr); | |
54 if (lo != null) { | |
55 ClosestSymbol symbol = lo.closestSymbolToPC(vtblPtr); | |
56 if (symbol != null) { | |
57 message += " (nearest symbol is " + symbol.getName() + ")"; | |
58 } | |
59 } | |
60 } | |
61 | |
62 return new WrongTypeException(message); | |
63 } | |
64 } |