Mercurial > hg > graal-compiler
view agent/src/share/classes/sun/jvm/hotspot/oops/ArrayKlass.java @ 2468:6c97c830fb6f
Merge
author | jrose |
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date | Sat, 09 Apr 2011 21:16:12 -0700 |
parents | c18cbe5936b8 |
children | da91efe96a93 |
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/* * Copyright (c) 2000, 2007, 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"), Oop.getHeaderSize()); higherDimension = new OopField(type.getOopField("_higher_dimension"), Oop.getHeaderSize()); lowerDimension = new OopField(type.getOopField("_lower_dimension"), Oop.getHeaderSize()); vtableLen = new CIntField(type.getCIntegerField("_vtable_len"), Oop.getHeaderSize()); allocSize = new CIntField(type.getCIntegerField("_alloc_size"), Oop.getHeaderSize()); componentMirror = new OopField(type.getOopField("_component_mirror"), Oop.getHeaderSize()); javaLangCloneableName = null; javaLangObjectName = null; javaIoSerializableName = null; } ArrayKlass(OopHandle handle, ObjectHeap heap) { super(handle, heap); } private static CIntField dimension; private static OopField higherDimension; private static OopField lowerDimension; private static CIntField vtableLen; private static CIntField allocSize; 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 long getAllocSize() { return allocSize.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 long getObjectSize() { return alignObjectSize(InstanceKlass.getHeaderSize() + getVtableLen() * getHeap().getOopSize()); } public void iterateFields(OopVisitor visitor, boolean doVMFields) { super.iterateFields(visitor, doVMFields); if (doVMFields) { visitor.doCInt(dimension, true); visitor.doOop(higherDimension, true); visitor.doOop(lowerDimension, true); visitor.doCInt(vtableLen, true); visitor.doCInt(allocSize, true); visitor.doOop(componentMirror, true); } } }