Mercurial > hg > truffle
annotate agent/src/share/classes/sun/jvm/hotspot/oops/ArrayKlass.java @ 17467:55fb97c4c58d hs25-b65
8029233: Update copyright year to match last edit in jdk8 hotspot repository for 2013
Summary: Copyright year updated for files modified during 2013
Reviewed-by: twisti, iveresov
| author | mikael |
|---|---|
| date | Tue, 24 Dec 2013 11:48:39 -0800 |
| parents | 71180a6e5080 |
| children | 4ca6dc0799b6 |
| rev | line source |
|---|---|
| 0 | 1 /* |
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2 * Copyright (c) 2000, 2013, Oracle and/or its affiliates. All rights reserved. |
| 0 | 3 * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER. |
| 4 * | |
| 5 * This code is free software; you can redistribute it and/or modify it | |
| 6 * under the terms of the GNU General Public License version 2 only, as | |
| 7 * published by the Free Software Foundation. | |
| 8 * | |
| 9 * This code is distributed in the hope that it will be useful, but WITHOUT | |
| 10 * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or | |
| 11 * FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License | |
| 12 * version 2 for more details (a copy is included in the LICENSE file that | |
| 13 * accompanied this code). | |
| 14 * | |
| 15 * You should have received a copy of the GNU General Public License version | |
| 16 * 2 along with this work; if not, write to the Free Software Foundation, | |
| 17 * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA. | |
| 18 * | |
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19 * Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA |
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20 * or visit www.oracle.com if you need additional information or have any |
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21 * questions. |
| 0 | 22 * |
| 23 */ | |
| 24 | |
| 25 package sun.jvm.hotspot.oops; | |
| 26 | |
| 27 import java.io.*; | |
| 28 import java.util.*; | |
| 29 import sun.jvm.hotspot.utilities.*; | |
| 30 import sun.jvm.hotspot.debugger.*; | |
| 31 import sun.jvm.hotspot.memory.*; | |
| 32 import sun.jvm.hotspot.runtime.*; | |
| 33 import sun.jvm.hotspot.types.*; | |
| 34 | |
| 35 // ArrayKlass is the abstract class for all array classes | |
| 36 | |
| 37 public class ArrayKlass extends Klass { | |
| 38 static { | |
| 39 VM.registerVMInitializedObserver(new Observer() { | |
| 40 public void update(Observable o, Object data) { | |
| 41 initialize(VM.getVM().getTypeDataBase()); | |
| 42 } | |
| 43 }); | |
| 44 } | |
| 45 | |
| 46 private static synchronized void initialize(TypeDataBase db) throws WrongTypeException { | |
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47 Type type = db.lookupType("ArrayKlass"); |
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48 dimension = new CIntField(type.getCIntegerField("_dimension"), 0); |
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49 higherDimension = new MetadataField(type.getAddressField("_higher_dimension"), 0); |
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50 lowerDimension = new MetadataField(type.getAddressField("_lower_dimension"), 0); |
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51 vtableLen = new CIntField(type.getCIntegerField("_vtable_len"), 0); |
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52 componentMirror = new OopField(type.getOopField("_component_mirror"), 0); |
| 0 | 53 javaLangCloneableName = null; |
| 54 javaLangObjectName = null; | |
| 55 javaIoSerializableName = null; | |
| 56 } | |
| 57 | |
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58 public ArrayKlass(Address addr) { |
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59 super(addr); |
| 0 | 60 } |
| 61 | |
| 62 private static CIntField dimension; | |
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63 private static MetadataField higherDimension; |
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64 private static MetadataField lowerDimension; |
| 0 | 65 private static CIntField vtableLen; |
| 66 private static OopField componentMirror; | |
| 67 | |
| 68 public Klass getJavaSuper() { | |
| 69 SystemDictionary sysDict = VM.getVM().getSystemDictionary(); | |
| 70 return sysDict.getObjectKlass(); | |
| 71 } | |
| 72 | |
| 73 public long getDimension() { return dimension.getValue(this); } | |
| 74 public Klass getHigherDimension() { return (Klass) higherDimension.getValue(this); } | |
| 75 public Klass getLowerDimension() { return (Klass) lowerDimension.getValue(this); } | |
| 76 public long getVtableLen() { return vtableLen.getValue(this); } | |
| 77 public Oop getComponentMirror() { return componentMirror.getValue(this); } | |
| 78 | |
| 79 // constant class names - javaLangCloneable, javaIoSerializable, javaLangObject | |
| 80 // Initialized lazily to avoid initialization ordering dependencies between ArrayKlass and SymbolTable | |
| 81 private static Symbol javaLangCloneableName; | |
| 82 private static Symbol javaLangObjectName; | |
| 83 private static Symbol javaIoSerializableName; | |
| 84 private static Symbol javaLangCloneableName() { | |
| 85 if (javaLangCloneableName == null) { | |
| 86 javaLangCloneableName = VM.getVM().getSymbolTable().probe("java/lang/Cloneable"); | |
| 87 } | |
| 88 return javaLangCloneableName; | |
| 89 } | |
| 90 | |
| 91 private static Symbol javaLangObjectName() { | |
| 92 if (javaLangObjectName == null) { | |
| 93 javaLangObjectName = VM.getVM().getSymbolTable().probe("java/lang/Object"); | |
| 94 } | |
| 95 return javaLangObjectName; | |
| 96 } | |
| 97 | |
| 98 private static Symbol javaIoSerializableName() { | |
| 99 if (javaIoSerializableName == null) { | |
| 100 javaIoSerializableName = VM.getVM().getSymbolTable().probe("java/io/Serializable"); | |
| 101 } | |
| 102 return javaIoSerializableName; | |
| 103 } | |
| 104 | |
| 105 public int getClassStatus() { | |
| 106 return JVMDIClassStatus.VERIFIED | JVMDIClassStatus.PREPARED | JVMDIClassStatus.INITIALIZED; | |
| 107 } | |
| 108 | |
| 109 public long computeModifierFlags() { | |
| 110 return JVM_ACC_ABSTRACT | JVM_ACC_FINAL | JVM_ACC_PUBLIC; | |
| 111 } | |
| 112 | |
| 113 public long getArrayHeaderInBytes() { | |
| 114 return Bits.maskBits(getLayoutHelper() >> LH_HEADER_SIZE_SHIFT, 0xFF); | |
| 115 } | |
| 116 | |
| 117 public int getLog2ElementSize() { | |
| 118 return Bits.maskBits(getLayoutHelper() >> LH_LOG2_ELEMENT_SIZE_SHIFT, 0xFF); | |
| 119 } | |
| 120 | |
| 121 public int getElementType() { | |
| 122 return Bits.maskBits(getLayoutHelper() >> LH_ELEMENT_TYPE_SHIFT, 0xFF); | |
| 123 } | |
| 124 | |
| 125 boolean computeSubtypeOf(Klass k) { | |
| 126 // An array is a subtype of Serializable, Clonable, and Object | |
| 127 Symbol name = k.getName(); | |
| 128 if (name != null && (name.equals(javaIoSerializableName()) || | |
| 129 name.equals(javaLangCloneableName()) || | |
| 130 name.equals(javaLangObjectName()))) { | |
| 131 return true; | |
| 132 } else { | |
| 133 return false; | |
| 134 } | |
| 135 } | |
| 136 | |
| 137 public void printValueOn(PrintStream tty) { | |
| 138 tty.print("ArrayKlass"); | |
| 139 } | |
| 140 | |
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141 public void iterateFields(MetadataVisitor visitor) { |
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142 super.iterateFields(visitor); |
| 0 | 143 visitor.doCInt(dimension, true); |
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144 visitor.doMetadata(higherDimension, true); |
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145 visitor.doMetadata(lowerDimension, true); |
| 0 | 146 visitor.doCInt(vtableLen, true); |
| 147 visitor.doOop(componentMirror, true); | |
| 148 } | |
| 149 } |