| /* |
| * Copyright (c) 2002, 2017, 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. |
| * |
| * 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 |
| * or visit www.oracle.com if you need additional information or have any |
| * questions. |
| * |
| */ |
| |
| package sun.jvm.hotspot.utilities; |
| |
| import java.util.*; |
| import sun.jvm.hotspot.classfile.*; |
| import sun.jvm.hotspot.oops.*; |
| import sun.jvm.hotspot.memory.*; |
| import sun.jvm.hotspot.runtime.*; |
| |
| public class SystemDictionaryHelper { |
| static { |
| VM.registerVMInitializedObserver(new Observer() { |
| public void update(Observable o, Object data) { |
| initialize(); |
| } |
| }); |
| } |
| |
| private static synchronized void initialize() { |
| klasses = null; |
| } |
| |
| // Instance klass array sorted by name. |
| private static InstanceKlass[] klasses; |
| |
| // side-effect!. caches the instance klass array. |
| public static synchronized InstanceKlass[] getAllInstanceKlasses() { |
| if (klasses != null) { |
| return klasses; |
| } |
| |
| final Vector tmp = new Vector(); |
| ClassLoaderDataGraph cldg = VM.getVM().getClassLoaderDataGraph(); |
| cldg.classesDo(new ClassLoaderDataGraph.ClassVisitor() { |
| public void visit(Klass k) { |
| if (k instanceof InstanceKlass) { |
| InstanceKlass ik = (InstanceKlass) k; |
| tmp.add(ik); |
| } |
| } |
| }); |
| |
| Object[] tmpArray = tmp.toArray(); |
| klasses = new InstanceKlass[tmpArray.length]; |
| System.arraycopy(tmpArray, 0, klasses, 0, tmpArray.length); |
| Arrays.sort(klasses, new Comparator() { |
| public int compare(Object o1, Object o2) { |
| InstanceKlass k1 = (InstanceKlass) o1; |
| InstanceKlass k2 = (InstanceKlass) o2; |
| Symbol s1 = k1.getName(); |
| Symbol s2 = k2.getName(); |
| return s1.asString().compareTo(s2.asString()); |
| } |
| }); |
| return klasses; |
| } |
| |
| // returns array of instance klasses whose name contains given namePart |
| public static InstanceKlass[] findInstanceKlasses(String namePart) { |
| namePart = namePart.replace('.', '/'); |
| InstanceKlass[] tmpKlasses = getAllInstanceKlasses(); |
| |
| Vector tmp = new Vector(); |
| for (int i = 0; i < tmpKlasses.length; i++) { |
| String name = tmpKlasses[i].getName().asString(); |
| if (name.indexOf(namePart) != -1) { |
| tmp.add(tmpKlasses[i]); |
| } |
| } |
| |
| Object[] tmpArray = tmp.toArray(); |
| InstanceKlass[] searchResult = new InstanceKlass[tmpArray.length]; |
| System.arraycopy(tmpArray, 0, searchResult, 0, tmpArray.length); |
| return searchResult; |
| } |
| |
| // find first class whose name matches exactly the given argument. |
| public static InstanceKlass findInstanceKlass(String className) { |
| // convert to internal name |
| className = className.replace('.', '/'); |
| ClassLoaderDataGraph cldg = VM.getVM().getClassLoaderDataGraph(); |
| |
| // check whether we have a class of given name |
| Klass klass = cldg.find(className); |
| if (klass != null && klass instanceof InstanceKlass) { |
| return (InstanceKlass) klass; |
| } else { |
| // no match .. |
| return null; |
| } |
| } |
| } |