Mercurial > hg > truffle
annotate agent/src/share/classes/sun/jvm/hotspot/runtime/VirtualBaseConstructor.java @ 12226:7944aba7ba41
8015107: NPG: Use consistent naming for metaspace concepts
Reviewed-by: coleenp, mgerdin, hseigel
| author | ehelin |
|---|---|
| date | Mon, 12 Aug 2013 17:37:02 +0200 |
| parents | da91efe96a93 |
| children |
| rev | line source |
|---|---|
| 3939 | 1 /* |
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2 * Copyright (c) 2000, 2012, Oracle and/or its affiliates. All rights reserved. |
| 3939 | 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 /** This provides a factory to create instances where the base virtual | |
| 36 * type is know and the expected subclasses are within a particular | |
| 37 * package. */ | |
| 38 | |
| 39 public class VirtualBaseConstructor<T> extends InstanceConstructor { | |
| 40 private TypeDataBase db; | |
| 41 private HashMap map; // Map<String, Class> | |
| 42 private Type baseType; | |
| 43 private Class unknownTypeHandler; | |
| 44 | |
| 45 public VirtualBaseConstructor(TypeDataBase db, Type baseType, String packageName, Class unknownTypeHandler) { | |
| 46 this.db = (HotSpotTypeDataBase)db; | |
| 47 map = new HashMap(); | |
| 48 this.baseType = baseType; | |
| 49 this.unknownTypeHandler = unknownTypeHandler; | |
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50 if (packageName != null) { |
| 3939 | 51 // Try to find mirror types for each of the types. If there isn't |
| 52 // a direct mirror then try to find an instantiable superclass and | |
| 53 // treat it as that. | |
| 54 for (Iterator iter = db.getTypes(); iter.hasNext(); ) { | |
| 55 Type t = (Type) iter.next(); | |
| 56 Type superType = t; | |
| 57 while (superType != null && superType != baseType) { | |
| 58 superType = superType.getSuperclass(); | |
| 59 } | |
| 60 if (superType == baseType) { | |
| 61 superType = t; | |
| 62 Class c = null; | |
| 63 while (c == null && superType != null) { | |
| 64 try { | |
| 65 c = Class.forName(packageName + "." + superType.getName()); | |
| 66 } catch (Exception e) { | |
| 67 } | |
| 68 if (c == null) superType = superType.getSuperclass(); | |
| 69 } | |
| 70 if (c == null) { | |
| 71 c = unknownTypeHandler; | |
| 72 } | |
| 73 map.put(t.getName(), c); | |
| 74 } | |
| 75 } | |
| 76 } | |
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77 } |
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78 |
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79 /** Adds a mapping from the given C++ type name to the given Java |
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80 class. The latter must be a subclass of |
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81 sun.jvm.hotspot.runtime.VMObject. Returns false if there was |
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82 already a class for this type name in the map. */ |
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83 public boolean addMapping(String cTypeName, Class clazz) { |
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84 if (map.get(cTypeName) != null) { |
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85 return false; |
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86 } |
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87 |
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88 map.put(cTypeName, clazz); |
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89 return true; |
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90 } |
| 3939 | 91 |
| 92 /** Instantiate the most-precisely typed wrapper object available | |
| 93 for the type of the given Address. If no type in the mapping | |
| 94 matched the type of the Address, throws a WrongTypeException. | |
| 95 Returns null for a null address (similar behavior to | |
| 96 VMObjectFactory). */ | |
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97 public T instantiateWrapperFor(Address addr) throws WrongTypeException { |
| 3939 | 98 if (addr == null) { |
| 99 return null; | |
| 100 } | |
| 101 | |
| 102 Type type = db.findDynamicTypeForAddress(addr, baseType); | |
| 103 if (type != null) { | |
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104 return (T) VMObjectFactory.newObject((Class) map.get(type.getName()), addr); |
| 3939 | 105 } else if (unknownTypeHandler != null) { |
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106 return (T) VMObjectFactory.newObject(unknownTypeHandler, addr); |
| 3939 | 107 } |
| 108 | |
| 109 throw newWrongTypeException(addr); | |
| 110 } | |
| 111 } |