Mercurial > hg > truffle
annotate agent/src/share/classes/sun/jvm/hotspot/runtime/VirtualConstructor.java @ 1552:c18cbe5936b8
6941466: Oracle rebranding changes for Hotspot repositories
Summary: Change all the Sun copyrights to Oracle copyright
Reviewed-by: ohair
| author | trims |
|---|---|
| date | Thu, 27 May 2010 19:08:38 -0700 |
| parents | a61af66fc99e |
| children | f6f3bb0ee072 |
| rev | line source |
|---|---|
| 0 | 1 /* |
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6941466: Oracle rebranding changes for Hotspot repositories
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2 * Copyright (c) 2000, 2005, Oracle and/or its affiliates. All rights reserved. |
| 0 | 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 * | |
|
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6941466: Oracle rebranding changes for Hotspot repositories
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19 * Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA |
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c18cbe5936b8
6941466: Oracle rebranding changes for Hotspot repositories
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20 * or visit www.oracle.com if you need additional information or have any |
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c18cbe5936b8
6941466: Oracle rebranding changes for Hotspot repositories
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21 * questions. |
| 0 | 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.*; | |
| 30 import sun.jvm.hotspot.types.*; | |
| 31 | |
| 32 /** This class provides generalized "virtual constructor" | |
| 33 functionality for VMObjects. In simple terms, it creates | |
| 34 correctly-typed Java wrapper objects for underlying Addresses, | |
| 35 using the "RTTI-like" functionality of TypeDataBase. For example, | |
| 36 if the given Address really is a DefNewGeneration*, the Java object | |
| 37 created for it will be of type | |
| 38 sun.jvm.hotspot.memory.DefNewGeneration, assuming the mapping from | |
| 39 type "DefNewGeneration" to class | |
| 40 sun.jvm.hotspot.memory.DefNewGeneration has been set up. */ | |
| 41 | |
| 42 public class VirtualConstructor { | |
| 43 private TypeDataBase db; | |
| 44 private Map map; // Map<String, Class> | |
| 45 | |
| 46 public VirtualConstructor(TypeDataBase db) { | |
| 47 this.db = db; | |
| 48 map = new HashMap(); | |
| 49 } | |
| 50 | |
| 51 /** Adds a mapping from the given C++ type name to the given Java | |
| 52 class. The latter must be a subclass of | |
| 53 sun.jvm.hotspot.runtime.VMObject. Returns false if there was | |
| 54 already a class for this type name in the map. */ | |
| 55 public boolean addMapping(String cTypeName, Class clazz) { | |
| 56 if (map.get(cTypeName) != null) { | |
| 57 return false; | |
| 58 } | |
| 59 | |
| 60 map.put(cTypeName, clazz); | |
| 61 return true; | |
| 62 } | |
| 63 | |
| 64 /** Instantiate the most-precisely typed wrapper object available | |
| 65 for the type of the given Address. If no type in the mapping | |
| 66 matched the type of the Address, throws a WrongTypeException. | |
| 67 Returns null for a null address (similar behavior to | |
| 68 VMObjectFactory). */ | |
| 69 public VMObject instantiateWrapperFor(Address addr) throws WrongTypeException { | |
| 70 if (addr == null) { | |
| 71 return null; | |
| 72 } | |
| 73 | |
| 74 for (Iterator iter = map.keySet().iterator(); iter.hasNext(); ) { | |
| 75 String typeName = (String) iter.next(); | |
| 76 if (db.addressTypeIsEqualToType(addr, db.lookupType(typeName))) { | |
| 77 return (VMObject) VMObjectFactory.newObject((Class) map.get(typeName), addr); | |
| 78 } | |
| 79 } | |
| 80 | |
| 81 String message = "No suitable match for type of address " + addr; | |
| 82 CDebugger cdbg = VM.getVM().getDebugger().getCDebugger(); | |
| 83 if (cdbg != null) { | |
| 84 // Most common case: V-table pointer is the first field | |
| 85 Address vtblPtr = addr.getAddressAt(0); | |
| 86 LoadObject lo = cdbg.loadObjectContainingPC(vtblPtr); | |
| 87 if (lo != null) { | |
| 88 ClosestSymbol symbol = lo.closestSymbolToPC(vtblPtr); | |
| 89 if (symbol != null) { | |
| 90 message += " (nearest symbol is " + symbol.getName() + ")"; | |
| 91 } | |
| 92 } | |
| 93 } | |
| 94 | |
| 95 throw new WrongTypeException(message); | |
| 96 } | |
| 97 } |