/*
* Copyright (c) 1998, 2003, Oracle and/or its affiliates. All rights reserved.
* DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.
*
* This code is free software; you can redistribute it and/or modify it
* under the terms of the GNU General Public License version 2 only, as
* published by the Free Software Foundation. Oracle designates this
* particular file as subject to the "Classpath" exception as provided
* by Oracle in the LICENSE file that accompanied this code.
*
* This code is distributed in the hope that it will be useful, but WITHOUT
* ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
* FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License
* version 2 for more details (a copy is included in the LICENSE file that
* accompanied this code).
*
* You should have received a copy of the GNU General Public License version
* 2 along with this work; if not, write to the Free Software Foundation,
* Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA.
*
* Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA
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*/
package com.sun.tools.jdi;
import com.sun.jdi.*;
import java.util.*;
public class ClassLoaderReferenceImpl extends ObjectReferenceImpl
implements ClassLoaderReference, VMListener {
// This is cached only while the VM is suspended
private static class Cache extends ObjectReferenceImpl.Cache {
List<ReferenceType> visibleClasses = null;
}
protected ObjectReferenceImpl.Cache newCache() {
return new Cache();
}
ClassLoaderReferenceImpl(VirtualMachine aVm, long ref) {
super(aVm, ref);
vm.state().addListener(this);
}
protected String description() {
return "ClassLoaderReference " + uniqueID();
}
public List<ReferenceType> definedClasses() {
ArrayList<ReferenceType> definedClasses = new ArrayList<ReferenceType>();
for (ReferenceType type : vm.allClasses()) {
if (type.isPrepared() &&
equals(type.classLoader())) {
definedClasses.add(type);
}
}
return definedClasses;
}
public List<ReferenceType> visibleClasses() {
List<ReferenceType> classes = null;
try {
Cache local = (Cache)getCache();
if (local != null) {
classes = local.visibleClasses;
}
if (classes == null) {
JDWP.ClassLoaderReference.VisibleClasses.ClassInfo[]
jdwpClasses = JDWP.ClassLoaderReference.VisibleClasses.
process(vm, this).classes;
classes = new ArrayList<ReferenceType>(jdwpClasses.length);
for (int i = 0; i < jdwpClasses.length; ++i) {
classes.add(vm.referenceType(jdwpClasses[i].typeID,
jdwpClasses[i].refTypeTag));
}
classes = Collections.unmodifiableList(classes);
if (local != null) {
local.visibleClasses = classes;
if ((vm.traceFlags & vm.TRACE_OBJREFS) != 0) {
vm.printTrace(description() +
" temporarily caching visible classes (count = " +
classes.size() + ")");
}
}
}
} catch (JDWPException exc) {
throw exc.toJDIException();
}
return classes;
}
Type findType(String signature) throws ClassNotLoadedException {
List<ReferenceType> types = visibleClasses();
Iterator iter = types.iterator();
while (iter.hasNext()) {
ReferenceType type = (ReferenceType)iter.next();
if (type.signature().equals(signature)) {
return type;
}
}
JNITypeParser parser = new JNITypeParser(signature);
throw new ClassNotLoadedException(parser.typeName(),
"Class " + parser.typeName() + " not loaded");
}
byte typeValueKey() {
return JDWP.Tag.CLASS_LOADER;
}
}