J. Duke | 319a3b9 | 2007-12-01 00:00:00 +0000 | [diff] [blame^] | 1 | /* |
| 2 | * Copyright 1998-2003 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. Sun designates this |
| 8 | * particular file as subject to the "Classpath" exception as provided |
| 9 | * by Sun in the LICENSE file that accompanied this code. |
| 10 | * |
| 11 | * This code is distributed in the hope that it will be useful, but WITHOUT |
| 12 | * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or |
| 13 | * FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License |
| 14 | * version 2 for more details (a copy is included in the LICENSE file that |
| 15 | * accompanied this code). |
| 16 | * |
| 17 | * You should have received a copy of the GNU General Public License version |
| 18 | * 2 along with this work; if not, write to the Free Software Foundation, |
| 19 | * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA. |
| 20 | * |
| 21 | * Please contact Sun Microsystems, Inc., 4150 Network Circle, Santa Clara, |
| 22 | * CA 95054 USA or visit www.sun.com if you need additional information or |
| 23 | * have any questions. |
| 24 | */ |
| 25 | |
| 26 | package com.sun.tools.jdi; |
| 27 | |
| 28 | import com.sun.jdi.*; |
| 29 | import java.util.*; |
| 30 | |
| 31 | public class ClassLoaderReferenceImpl extends ObjectReferenceImpl |
| 32 | implements ClassLoaderReference, VMListener { |
| 33 | |
| 34 | // This is cached only while the VM is suspended |
| 35 | private static class Cache extends ObjectReferenceImpl.Cache { |
| 36 | List<ReferenceType> visibleClasses = null; |
| 37 | } |
| 38 | |
| 39 | protected ObjectReferenceImpl.Cache newCache() { |
| 40 | return new Cache(); |
| 41 | } |
| 42 | |
| 43 | ClassLoaderReferenceImpl(VirtualMachine aVm, long ref) { |
| 44 | super(aVm, ref); |
| 45 | vm.state().addListener(this); |
| 46 | } |
| 47 | |
| 48 | protected String description() { |
| 49 | return "ClassLoaderReference " + uniqueID(); |
| 50 | } |
| 51 | |
| 52 | public List<ReferenceType> definedClasses() { |
| 53 | ArrayList<ReferenceType> definedClasses = new ArrayList<ReferenceType>(); |
| 54 | for (ReferenceType type : vm.allClasses()) { |
| 55 | if (type.isPrepared() && |
| 56 | equals(type.classLoader())) { |
| 57 | definedClasses.add(type); |
| 58 | } |
| 59 | } |
| 60 | return definedClasses; |
| 61 | } |
| 62 | |
| 63 | public List<ReferenceType> visibleClasses() { |
| 64 | List<ReferenceType> classes = null; |
| 65 | try { |
| 66 | Cache local = (Cache)getCache(); |
| 67 | |
| 68 | if (local != null) { |
| 69 | classes = local.visibleClasses; |
| 70 | } |
| 71 | if (classes == null) { |
| 72 | JDWP.ClassLoaderReference.VisibleClasses.ClassInfo[] |
| 73 | jdwpClasses = JDWP.ClassLoaderReference.VisibleClasses. |
| 74 | process(vm, this).classes; |
| 75 | classes = new ArrayList<ReferenceType>(jdwpClasses.length); |
| 76 | for (int i = 0; i < jdwpClasses.length; ++i) { |
| 77 | classes.add(vm.referenceType(jdwpClasses[i].typeID, |
| 78 | jdwpClasses[i].refTypeTag)); |
| 79 | } |
| 80 | classes = Collections.unmodifiableList(classes); |
| 81 | if (local != null) { |
| 82 | local.visibleClasses = classes; |
| 83 | if ((vm.traceFlags & vm.TRACE_OBJREFS) != 0) { |
| 84 | vm.printTrace(description() + |
| 85 | " temporarily caching visible classes (count = " + |
| 86 | classes.size() + ")"); |
| 87 | } |
| 88 | } |
| 89 | } |
| 90 | } catch (JDWPException exc) { |
| 91 | throw exc.toJDIException(); |
| 92 | } |
| 93 | return classes; |
| 94 | } |
| 95 | |
| 96 | Type findType(String signature) throws ClassNotLoadedException { |
| 97 | List<ReferenceType> types = visibleClasses(); |
| 98 | Iterator iter = types.iterator(); |
| 99 | while (iter.hasNext()) { |
| 100 | ReferenceType type = (ReferenceType)iter.next(); |
| 101 | if (type.signature().equals(signature)) { |
| 102 | return type; |
| 103 | } |
| 104 | } |
| 105 | JNITypeParser parser = new JNITypeParser(signature); |
| 106 | throw new ClassNotLoadedException(parser.typeName(), |
| 107 | "Class " + parser.typeName() + " not loaded"); |
| 108 | } |
| 109 | |
| 110 | byte typeValueKey() { |
| 111 | return JDWP.Tag.CLASS_LOADER; |
| 112 | } |
| 113 | } |