Mercurial > hg > truffle
view agent/src/share/classes/sun/jvm/hotspot/oops/ObjArrayKlass.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 | d8ce2825b193 |
children |
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/* * Copyright (c) 2000, 2012, 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.debugger.*; import sun.jvm.hotspot.runtime.*; import sun.jvm.hotspot.types.*; import sun.jvm.hotspot.utilities.*; // ObjArrayKlass is the klass for ObjArrays public class ObjArrayKlass extends ArrayKlass { 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("ObjArrayKlass"); elementKlass = new MetadataField(type.getAddressField("_element_klass"), 0); bottomKlass = new MetadataField(type.getAddressField("_bottom_klass"), 0); } public ObjArrayKlass(Address addr) { super(addr); } private static MetadataField elementKlass; private static MetadataField bottomKlass; public Klass getElementKlass() { return (Klass) elementKlass.getValue(this); } public Klass getBottomKlass() { return (Klass) bottomKlass.getValue(this); } public long computeModifierFlags() { long elementFlags = getElementKlass().computeModifierFlags(); long arrayFlags = 0L; if ((elementFlags & (JVM_ACC_PUBLIC | JVM_ACC_PROTECTED)) != 0) { // The array type is public if the component type is public or protected arrayFlags = JVM_ACC_ABSTRACT | JVM_ACC_FINAL | JVM_ACC_PUBLIC; } else { // The array type is private if the component type is private arrayFlags = JVM_ACC_ABSTRACT | JVM_ACC_FINAL; } return arrayFlags; } public void iterateFields(MetadataVisitor visitor) { super.iterateFields(visitor); visitor.doMetadata(elementKlass, true); visitor.doMetadata(bottomKlass, true); } public Klass arrayKlassImpl(boolean orNull, int n) { if (Assert.ASSERTS_ENABLED) { Assert.that(getDimension() <= n, "check order of chain"); } int dimension = (int) getDimension(); if (dimension == n) { return this; } ObjArrayKlass ak = (ObjArrayKlass) getHigherDimension(); if (ak == null) { if (orNull) return null; // FIXME: would need to change in reflective system to actually // allocate klass throw new RuntimeException("Can not allocate array klasses in debugging system"); } if (orNull) { return ak.arrayKlassOrNull(n); } return ak.arrayKlass(n); } public Klass arrayKlassImpl(boolean orNull) { return arrayKlassImpl(orNull, (int) (getDimension() + 1)); } public void printValueOn(PrintStream tty) { tty.print("ObjArrayKlass for "); getElementKlass().printValueOn(tty); } };