package sun.jvm.hotspot.classfile;
import java.io.PrintStream;
import sun.jvm.hotspot.debugger.*;
import sun.jvm.hotspot.memory.*;
import sun.jvm.hotspot.runtime.*;
import sun.jvm.hotspot.oops.*;
import sun.jvm.hotspot.types.*;
public class ClassLoaderData extends VMObject {
static {
VM.registerVMInitializedObserver(new java.util.Observer() {
public void update(java.util.Observable o, Object data) {
initialize(VM.getVM().getTypeDataBase());
}
});
}
private static synchronized void initialize(TypeDataBase db) throws WrongTypeException {
Type type = db.lookupType("ClassLoaderData");
classLoaderField = type.getAddressField("_class_loader");
nextField = type.getAddressField("_next");
klassesField = new MetadataField(type.getAddressField("_klasses"), 0);
isUnsafeAnonymousField = new CIntField(type.getCIntegerField("_is_unsafe_anonymous"), 0);
dictionaryField = type.getAddressField("_dictionary");
}
private static AddressField classLoaderField;
private static AddressField nextField;
private static MetadataField klassesField;
private static CIntField isUnsafeAnonymousField;
private static AddressField dictionaryField;
public ClassLoaderData(Address addr) {
super(addr);
}
public Dictionary dictionary() {
Address tmp = dictionaryField.getValue();
return (Dictionary) VMObjectFactory.newObject(Dictionary.class, tmp);
}
public static ClassLoaderData instantiateWrapperFor(Address addr) {
if (addr == null) {
return null;
}
return new ClassLoaderData(addr);
}
public Oop getClassLoader() {
Address handle = classLoaderField.getValue(getAddress());
if (handle != null) {
OopHandle refs = handle.getOopHandleAt(0);
return (Instance)VM.getVM().getObjectHeap().newOop(refs);
}
return null;
}
public boolean getisUnsafeAnonymous() {
return isUnsafeAnonymousField.getValue(this) != 0;
}
public ClassLoaderData next() {
return instantiateWrapperFor(nextField.getValue(getAddress()));
}
public Klass getKlasses() { return (Klass)klassesField.getValue(this); }
public Klass find(String className) {
for (Klass l = getKlasses(); l != null; l = l.getNextLinkKlass()) {
if (l.getName().equals(className)) {
return l;
}
}
return null;
}
public void classesDo(ClassLoaderDataGraph.ClassVisitor v) {
for (Klass l = getKlasses(); l != null; l = l.getNextLinkKlass()) {
v.visit(l);
}
}
public void allEntriesDo(ClassLoaderDataGraph.ClassAndLoaderVisitor v) {
for (Klass l = getKlasses(); l != null; l = l.getNextLinkKlass()) {
dictionary().allEntriesDo(v, getClassLoader());
}
}
}