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99 lines
3.6 KiB
Java
99 lines
3.6 KiB
Java
/*
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* Copyright (c) 2012, 2018, Oracle and/or its affiliates. All rights reserved.
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* DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.
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*
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* This code is free software; you can redistribute it and/or modify it
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* under the terms of the GNU General Public License version 2 only, as
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* published by the Free Software Foundation.
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*
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* This code is distributed in the hope that it will be useful, but WITHOUT
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* ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
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* FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License
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* version 2 for more details (a copy is included in the LICENSE file that
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* accompanied this code).
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*
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* You should have received a copy of the GNU General Public License version
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* 2 along with this work; if not, write to the Free Software Foundation,
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* Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA.
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*
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* Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA
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* or visit www.oracle.com if you need additional information or have any
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* questions.
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*
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*/
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package sun.jvm.hotspot.oops;
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import java.io.*;
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import java.util.*;
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import sun.jvm.hotspot.memory.*;
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import sun.jvm.hotspot.utilities.*;
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import sun.jvm.hotspot.debugger.*;
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import sun.jvm.hotspot.runtime.*;
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import sun.jvm.hotspot.types.*;
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abstract public class Metadata extends VMObject {
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static {
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VM.registerVMInitializedObserver(new Observer() {
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public void update(Observable o, Object data) {
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initialize(VM.getVM().getTypeDataBase());
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}
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});
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}
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public Metadata(Address addr) {
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super(addr);
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}
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public static long alignSize(long size) {
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// natural word size.
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return VM.getVM().alignUp(size, VM.getVM().getBytesPerWord());
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}
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private static VirtualBaseConstructor<Metadata> metadataConstructor;
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private static synchronized void initialize(TypeDataBase db) throws WrongTypeException {
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metadataConstructor = new VirtualBaseConstructor<Metadata>(db, db.lookupType("Metadata"), null, null);
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// Define an explicit mapping since the C++ and Java type names don't match.
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metadataConstructor.addMapping("Metadata", Metadata.class);
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metadataConstructor.addMapping("Klass", Klass.class);
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metadataConstructor.addMapping("InstanceKlass", InstanceKlass.class);
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metadataConstructor.addMapping("InstanceMirrorKlass", InstanceMirrorKlass.class);
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metadataConstructor.addMapping("InstanceRefKlass", InstanceRefKlass.class);
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metadataConstructor.addMapping("InstanceClassLoaderKlass", InstanceClassLoaderKlass.class);
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metadataConstructor.addMapping("TypeArrayKlass", TypeArrayKlass.class);
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metadataConstructor.addMapping("ObjArrayKlass", ObjArrayKlass.class);
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metadataConstructor.addMapping("Method", Method.class);
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metadataConstructor.addMapping("MethodData", MethodData.class);
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metadataConstructor.addMapping("ConstMethod", ConstMethod.class);
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metadataConstructor.addMapping("ConstantPool", ConstantPool.class);
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metadataConstructor.addMapping("ConstantPoolCache", ConstantPoolCache.class);
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}
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public static Metadata instantiateWrapperFor(Address addr) {
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return metadataConstructor.instantiateWrapperFor(addr);
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}
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public void iterate(MetadataVisitor visitor) {
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visitor.setObj(this);
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visitor.prologue();
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iterateFields(visitor);
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visitor.epilogue();
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}
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void iterateFields(MetadataVisitor visitor) {
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}
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abstract public void printValueOn(PrintStream tty);
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public void dumpReplayData(PrintStream out) {
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out.println("# Unknown Metadata");
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}
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public boolean isShared() {
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VM vm = VM.getVM();
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if (vm.isSharingEnabled()) {
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return MetaspaceObj.isShared(getAddress());
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}
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return false;
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}
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}
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