Mercurial > hg > truffle
view agent/src/share/classes/sun/jvm/hotspot/oops/ArrayKlass.java @ 18665:96861e3f8cc5
made CFGPrinterObserver reset (upon close) properly
author | Doug Simon <doug.simon@oracle.com> |
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date | Thu, 11 Dec 2014 22:14:30 +0100 |
parents | 89152779163c |
children |
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/* * Copyright (c) 2000, 2013, 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.oops; import java.io.*; import java.util.*; import sun.jvm.hotspot.utilities.*; import sun.jvm.hotspot.debugger.*; import sun.jvm.hotspot.memory.*; import sun.jvm.hotspot.runtime.*; import sun.jvm.hotspot.types.*; // ArrayKlass is the abstract class for all array classes public class ArrayKlass extends Klass { static { VM.registerVMInitializedObserver(new Observer() { public void update(Observable o, Object data) { initialize(VM.getVM().getTypeDataBase()); } }); } private static synchronized void initialize(TypeDataBase db) throws WrongTypeException { Type type = db.lookupType("ArrayKlass"); dimension = new CIntField(type.getCIntegerField("_dimension"), 0); higherDimension = new MetadataField(type.getAddressField("_higher_dimension"), 0); lowerDimension = new MetadataField(type.getAddressField("_lower_dimension"), 0); vtableLen = new CIntField(type.getCIntegerField("_vtable_len"), 0); componentMirror = new OopField(type.getOopField("_component_mirror"), 0); javaLangCloneableName = null; javaLangObjectName = null; javaIoSerializableName = null; } public ArrayKlass(Address addr) { super(addr); } private static CIntField dimension; private static MetadataField higherDimension; private static MetadataField lowerDimension; private static CIntField vtableLen; private static OopField componentMirror; public Klass getJavaSuper() { SystemDictionary sysDict = VM.getVM().getSystemDictionary(); return sysDict.getObjectKlass(); } public long getDimension() { return dimension.getValue(this); } public Klass getHigherDimension() { return (Klass) higherDimension.getValue(this); } public Klass getLowerDimension() { return (Klass) lowerDimension.getValue(this); } public long getVtableLen() { return vtableLen.getValue(this); } public Oop getComponentMirror() { return componentMirror.getValue(this); } // constant class names - javaLangCloneable, javaIoSerializable, javaLangObject // Initialized lazily to avoid initialization ordering dependencies between ArrayKlass and SymbolTable private static Symbol javaLangCloneableName; private static Symbol javaLangObjectName; private static Symbol javaIoSerializableName; private static Symbol javaLangCloneableName() { if (javaLangCloneableName == null) { javaLangCloneableName = VM.getVM().getSymbolTable().probe("java/lang/Cloneable"); } return javaLangCloneableName; } private static Symbol javaLangObjectName() { if (javaLangObjectName == null) { javaLangObjectName = VM.getVM().getSymbolTable().probe("java/lang/Object"); } return javaLangObjectName; } private static Symbol javaIoSerializableName() { if (javaIoSerializableName == null) { javaIoSerializableName = VM.getVM().getSymbolTable().probe("java/io/Serializable"); } return javaIoSerializableName; } public int getClassStatus() { return JVMDIClassStatus.VERIFIED | JVMDIClassStatus.PREPARED | JVMDIClassStatus.INITIALIZED; } public long computeModifierFlags() { return JVM_ACC_ABSTRACT | JVM_ACC_FINAL | JVM_ACC_PUBLIC; } public long getArrayHeaderInBytes() { return Bits.maskBits(getLayoutHelper() >> LH_HEADER_SIZE_SHIFT, 0xFF); } public int getLog2ElementSize() { return Bits.maskBits(getLayoutHelper() >> LH_LOG2_ELEMENT_SIZE_SHIFT, 0xFF); } public int getElementType() { return Bits.maskBits(getLayoutHelper() >> LH_ELEMENT_TYPE_SHIFT, 0xFF); } boolean computeSubtypeOf(Klass k) { // An array is a subtype of Serializable, Clonable, and Object Symbol name = k.getName(); if (name != null && (name.equals(javaIoSerializableName()) || name.equals(javaLangCloneableName()) || name.equals(javaLangObjectName()))) { return true; } else { return false; } } public void printValueOn(PrintStream tty) { tty.print("ArrayKlass"); } public void iterateFields(MetadataVisitor visitor) { super.iterateFields(visitor); visitor.doCInt(dimension, true); visitor.doMetadata(higherDimension, true); visitor.doMetadata(lowerDimension, true); visitor.doCInt(vtableLen, true); visitor.doOop(componentMirror, true); } }