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comparison agent/src/share/classes/sun/jvm/hotspot/runtime/VirtualBaseConstructor.java @ 6725:da91efe96a93

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6964458: Reimplement class meta-data storage to use native memory Summary: Remove PermGen, allocate meta-data in metaspace linked to class loaders, rewrite GC walking, rewrite and rename metadata to be C++ classes Reviewed-by: jmasa, stefank, never, coleenp, kvn, brutisso, mgerdin, dholmes, jrose, twisti, roland Contributed-by: jmasa <jon.masamitsu@oracle.com>, stefank <stefan.karlsson@oracle.com>, mgerdin <mikael.gerdin@oracle.com>, never <tom.rodriguez@oracle.com>
author coleenp
date Sat, 01 Sep 2012 13:25:18 -0400
parents f6f3bb0ee072
children
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6724:36d1d483d5d6 6725:da91efe96a93
1 /* 1 /*
2 * Copyright (c) 2000, 2011, Oracle and/or its affiliates. All rights reserved. 2 * Copyright (c) 2000, 2012, Oracle and/or its affiliates. All rights reserved.
3 * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER. 3 * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.
4 * 4 *
5 * This code is free software; you can redistribute it and/or modify it 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 6 * under the terms of the GNU General Public License version 2 only, as
7 * published by the Free Software Foundation. 7 * published by the Free Software Foundation.
45 public VirtualBaseConstructor(TypeDataBase db, Type baseType, String packageName, Class unknownTypeHandler) { 45 public VirtualBaseConstructor(TypeDataBase db, Type baseType, String packageName, Class unknownTypeHandler) {
46 this.db = (HotSpotTypeDataBase)db; 46 this.db = (HotSpotTypeDataBase)db;
47 map = new HashMap(); 47 map = new HashMap();
48 this.baseType = baseType; 48 this.baseType = baseType;
49 this.unknownTypeHandler = unknownTypeHandler; 49 this.unknownTypeHandler = unknownTypeHandler;
50 if (packageName != null) {
50 // Try to find mirror types for each of the types. If there isn't 51 // Try to find mirror types for each of the types. If there isn't
51 // a direct mirror then try to find an instantiable superclass and 52 // a direct mirror then try to find an instantiable superclass and
52 // treat it as that. 53 // treat it as that.
53 for (Iterator iter = db.getTypes(); iter.hasNext(); ) { 54 for (Iterator iter = db.getTypes(); iter.hasNext(); ) {
54 Type t = (Type) iter.next(); 55 Type t = (Type) iter.next();
71 } 72 }
72 map.put(t.getName(), c); 73 map.put(t.getName(), c);
73 } 74 }
74 } 75 }
75 } 76 }
77 }
78
79 /** Adds a mapping from the given C++ type name to the given Java
80 class. The latter must be a subclass of
81 sun.jvm.hotspot.runtime.VMObject. Returns false if there was
82 already a class for this type name in the map. */
83 public boolean addMapping(String cTypeName, Class clazz) {
84 if (map.get(cTypeName) != null) {
85 return false;
86 }
87
88 map.put(cTypeName, clazz);
89 return true;
90 }
76 91
77 /** Instantiate the most-precisely typed wrapper object available 92 /** Instantiate the most-precisely typed wrapper object available
78 for the type of the given Address. If no type in the mapping 93 for the type of the given Address. If no type in the mapping
79 matched the type of the Address, throws a WrongTypeException. 94 matched the type of the Address, throws a WrongTypeException.
80 Returns null for a null address (similar behavior to 95 Returns null for a null address (similar behavior to
81 VMObjectFactory). */ 96 VMObjectFactory). */
82 public VMObject instantiateWrapperFor(Address addr) throws WrongTypeException { 97 public T instantiateWrapperFor(Address addr) throws WrongTypeException {
83 if (addr == null) { 98 if (addr == null) {
84 return null; 99 return null;
85 } 100 }
86 101
87 Type type = db.findDynamicTypeForAddress(addr, baseType); 102 Type type = db.findDynamicTypeForAddress(addr, baseType);
88 if (type != null) { 103 if (type != null) {
89 return (VMObject) VMObjectFactory.newObject((Class) map.get(type.getName()), addr); 104 return (T) VMObjectFactory.newObject((Class) map.get(type.getName()), addr);
90 } else if (unknownTypeHandler != null) { 105 } else if (unknownTypeHandler != null) {
91 return (VMObject) VMObjectFactory.newObject(unknownTypeHandler, addr); 106 return (T) VMObjectFactory.newObject(unknownTypeHandler, addr);
92 } 107 }
93 108
94 throw newWrongTypeException(addr); 109 throw newWrongTypeException(addr);
95 } 110 }
96 } 111 }