Mercurial > hg > truffle
annotate agent/src/share/classes/sun/jvm/hotspot/oops/TypeArray.java @ 6725:da91efe96a93
6964458: Reimplement class meta-data storage to use native memory
Summary: Remove PermGen, allocate meta-data in metaspace linked to class loaders, rewrite GC walking, rewrite and rename metadata to be C++ classes
Reviewed-by: jmasa, stefank, never, coleenp, kvn, brutisso, mgerdin, dholmes, jrose, twisti, roland
Contributed-by: jmasa <jon.masamitsu@oracle.com>, stefank <stefan.karlsson@oracle.com>, mgerdin <mikael.gerdin@oracle.com>, never <tom.rodriguez@oracle.com>
| author | coleenp |
|---|---|
| date | Sat, 01 Sep 2012 13:25:18 -0400 |
| parents | 6a991dcb52bb |
| children |
| rev | line source |
|---|---|
| 0 | 1 /* |
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6964458: Reimplement class meta-data storage to use native memory
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2 * Copyright (c) 2000, 2012, 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.debugger.*; | |
| 30 import sun.jvm.hotspot.runtime.*; | |
| 31 import sun.jvm.hotspot.types.*; | |
| 32 | |
| 33 // A TypeArray is an array containing basic types (non oop elements). | |
| 34 // It is used for arrays of {characters, singles, doubles, bytes, shorts, integers, longs} | |
| 35 | |
| 36 public class TypeArray extends Array { | |
| 37 static { | |
| 38 VM.registerVMInitializedObserver(new Observer() { | |
| 39 public void update(Observable o, Object data) { | |
| 40 initialize(VM.getVM().getTypeDataBase()); | |
| 41 } | |
| 42 }); | |
| 43 } | |
| 44 | |
| 45 private static synchronized void initialize(TypeDataBase db) throws WrongTypeException { | |
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46 Type type = db.lookupType("typeArrayOop"); |
| 0 | 47 } |
| 48 | |
| 49 TypeArray(OopHandle handle, ObjectHeap heap) { | |
| 50 super(handle, heap); | |
| 51 } | |
| 52 | |
| 53 public boolean isTypeArray() { return true; } | |
| 54 | |
| 55 public byte getByteAt(long index) { | |
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56 if (index < 0 || index >= getLength()) { |
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6a991dcb52bb
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57 throw new ArrayIndexOutOfBoundsException(index + " " + getLength()); |
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58 } |
| 0 | 59 long offset = baseOffsetInBytes(BasicType.T_BYTE) + index * getHeap().getByteSize(); |
| 60 return getHandle().getJByteAt(offset); | |
| 61 } | |
| 62 | |
| 63 public boolean getBooleanAt(long index) { | |
| 64 long offset = baseOffsetInBytes(BasicType.T_BOOLEAN) + index * getHeap().getBooleanSize(); | |
| 65 return getHandle().getJBooleanAt(offset); | |
| 66 } | |
| 67 | |
| 68 public char getCharAt(long index) { | |
| 69 long offset = baseOffsetInBytes(BasicType.T_CHAR) + index * getHeap().getCharSize(); | |
| 70 return getHandle().getJCharAt(offset); | |
| 71 } | |
| 72 | |
| 73 public int getIntAt(long index) { | |
| 74 long offset = baseOffsetInBytes(BasicType.T_INT) + index * getHeap().getIntSize(); | |
| 75 return getHandle().getJIntAt(offset); | |
| 76 } | |
| 77 | |
| 78 public short getShortAt(long index) { | |
| 79 long offset = baseOffsetInBytes(BasicType.T_SHORT) + index * getHeap().getShortSize(); | |
| 80 return getHandle().getJShortAt(offset); | |
| 81 } | |
| 82 | |
| 83 public long getLongAt(long index) { | |
| 84 long offset = baseOffsetInBytes(BasicType.T_LONG) + index * getHeap().getLongSize(); | |
| 85 return getHandle().getJLongAt(offset); | |
| 86 } | |
| 87 | |
| 88 public float getFloatAt(long index) { | |
| 89 long offset = baseOffsetInBytes(BasicType.T_FLOAT) + index * getHeap().getFloatSize(); | |
| 90 return getHandle().getJFloatAt(offset); | |
| 91 } | |
| 92 | |
| 93 public double getDoubleAt(long index) { | |
| 94 long offset = baseOffsetInBytes(BasicType.T_DOUBLE) + index * getHeap().getDoubleSize(); | |
| 95 return getHandle().getJDoubleAt(offset); | |
| 96 } | |
| 97 | |
| 98 public void printValueOn(PrintStream tty) { | |
| 99 TypeArrayKlass klass = (TypeArrayKlass) getKlass(); | |
| 100 tty.print(klass.getTypeName()); | |
| 101 } | |
| 102 | |
| 103 public void iterateFields(OopVisitor visitor, boolean doVMFields) { | |
| 104 super.iterateFields(visitor, doVMFields); | |
| 105 TypeArrayKlass klass = (TypeArrayKlass) getKlass(); | |
| 106 int length = (int) getLength(); | |
| 107 int type = (int) klass.getElementType(); | |
| 108 for (int index = 0; index < length; index++) { | |
| 109 FieldIdentifier id = new IndexableFieldIdentifier(index); | |
| 110 switch (type) { | |
| 111 case TypeArrayKlass.T_BOOLEAN: { | |
| 112 long offset = baseOffsetInBytes(BasicType.T_BOOLEAN) + index * getHeap().getBooleanSize(); | |
| 113 visitor.doBoolean(new BooleanField(id, offset, false), false); | |
| 114 break; | |
| 115 } | |
| 116 case TypeArrayKlass.T_CHAR: { | |
| 117 long offset = baseOffsetInBytes(BasicType.T_CHAR) + index * getHeap().getCharSize(); | |
| 118 visitor.doChar(new CharField(id, offset, false), false); | |
| 119 break; | |
| 120 } | |
| 121 case TypeArrayKlass.T_FLOAT: { | |
| 122 long offset = baseOffsetInBytes(BasicType.T_FLOAT) + index * getHeap().getFloatSize(); | |
| 123 visitor.doFloat(new FloatField(id, offset, false), false); | |
| 124 break; | |
| 125 } | |
| 126 case TypeArrayKlass.T_DOUBLE: { | |
| 127 long offset = baseOffsetInBytes(BasicType.T_DOUBLE) + index * getHeap().getDoubleSize(); | |
| 128 visitor.doDouble(new DoubleField(id, offset, false), false); | |
| 129 break; | |
| 130 } | |
| 131 case TypeArrayKlass.T_BYTE: { | |
| 132 long offset = baseOffsetInBytes(BasicType.T_BYTE) + index * getHeap().getByteSize(); | |
| 133 visitor.doByte(new ByteField(id, offset, false), false); | |
| 134 break; | |
| 135 } | |
| 136 case TypeArrayKlass.T_SHORT: { | |
| 137 long offset = baseOffsetInBytes(BasicType.T_SHORT) + index * getHeap().getShortSize(); | |
| 138 visitor.doShort(new ShortField(id, offset, false), false); | |
| 139 break; | |
| 140 } | |
| 141 case TypeArrayKlass.T_INT: { | |
| 142 long offset = baseOffsetInBytes(BasicType.T_INT) + index * getHeap().getIntSize(); | |
| 143 visitor.doInt(new IntField(id, offset, false), false); | |
| 144 break; | |
| 145 } | |
| 146 case TypeArrayKlass.T_LONG: { | |
| 147 long offset = baseOffsetInBytes(BasicType.T_LONG) + index * getHeap().getLongSize(); | |
| 148 visitor.doLong(new LongField(id, offset, false), false); | |
| 149 break; | |
| 150 } | |
| 151 } | |
| 152 } | |
| 153 } | |
| 154 } |