/*
* 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
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*/
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.
/**代码未完, 请加载全部代码(NowJava.com).**/