--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/agent/src/share/classes/sun/jvm/hotspot/jdi/ClassLoaderReferenceImpl.java	Sat Dec 01 00:00:00 2007 +0000
@@ -0,0 +1,134 @@
+/*
+ * Copyright 2002-2003 Sun Microsystems, Inc.  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.
+ *
+ * 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 Sun Microsystems, Inc., 4150 Network Circle, Santa Clara,
+ * CA 95054 USA or visit www.sun.com if you need additional information or
+ * have any questions.
+ *
+ */
+
+package sun.jvm.hotspot.jdi;
+
+import sun.jvm.hotspot.oops.Oop;
+import sun.jvm.hotspot.oops.Instance;
+import sun.jvm.hotspot.oops.Klass;
+import sun.jvm.hotspot.memory.SystemDictionary;
+import sun.jvm.hotspot.memory.Universe;
+import sun.jvm.hotspot.runtime.VM;
+
+import com.sun.jdi.*;
+import java.util.*;
+
+public class ClassLoaderReferenceImpl
+    extends ObjectReferenceImpl
+    implements ClassLoaderReference
+{
+     // because we work on process snapshot or core we can
+     // cache visibleClasses & definedClasses always (i.e., no suspension)
+     private List visibleClassesCache;
+     private List definedClassesCache;
+
+     ClassLoaderReferenceImpl(VirtualMachine aVm, Instance oRef) {
+         super(aVm, oRef);
+     }
+
+     protected String description() {
+         return "ClassLoaderReference " + uniqueID();
+     }
+
+     public List definedClasses() {
+         if (definedClassesCache == null) {
+             definedClassesCache = new ArrayList();
+             Iterator iter = vm.allClasses().iterator();
+             while (iter.hasNext()) {
+                 ReferenceType type = (ReferenceType)iter.next();
+                 if (equals(type.classLoader())) {  /* thanks OTI */
+                     definedClassesCache.add(type);
+                 }
+             }
+         }
+         return definedClassesCache;
+     }
+
+     private SystemDictionary getSystemDictionary() {
+         return vm.saSystemDictionary();
+     }
+
+     private Universe getUniverse() {
+         return vm.saUniverse();
+     }
+
+     public List visibleClasses() {
+         if (visibleClassesCache != null)
+            return visibleClassesCache;
+
+         visibleClassesCache = new ArrayList();
+
+         // refer to getClassLoaderClasses in jvmtiGetLoadedClasses.cpp
+         //  a. SystemDictionary::classes_do doesn't include arrays of primitive types (any dimensions)
+         SystemDictionary sysDict = getSystemDictionary();
+         sysDict.classesDo(
+                           new SystemDictionary.ClassAndLoaderVisitor() {
+                                public void visit(Klass k, Oop loader) {
+                                    if (ref().equals(loader)) {
+                                        for (Klass l = k; l != null; l = l.arrayKlassOrNull()) {
+                                            visibleClassesCache.add(vm.referenceType(l));
+                                        }
+                                    }
+                                }
+                           }
+                           );
+
+         // b. multi dimensional arrays of primitive types
+         sysDict.primArrayClassesDo(
+                                    new SystemDictionary.ClassAndLoaderVisitor() {
+                                         public void visit(Klass k, Oop loader) {
+                                             if (ref().equals(loader)) {
+                                                 visibleClassesCache.add(vm.referenceType(k));
+                                             }
+                                         }
+                                     }
+                                     );
+
+         // c. single dimensional primitive array klasses from Universe
+         // these are not added to SystemDictionary
+         getUniverse().basicTypeClassesDo(
+                            new SystemDictionary.ClassVisitor() {
+                                public void visit(Klass k) {
+                                    visibleClassesCache.add(vm.referenceType(k));
+                                }
+                            }
+                            );
+
+         return visibleClassesCache;
+     }
+
+     Type findType(String signature) throws ClassNotLoadedException {
+         List 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");
+     }
+}