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annotate agent/src/share/classes/sun/jvm/hotspot/oops/ObjArrayKlass.java @ 3939:f6f3bb0ee072
7088955: add C2 IR support to the SA
Reviewed-by: kvn
| author | never |
|---|---|
| date | Sun, 11 Sep 2011 14:48:24 -0700 |
| parents | c18cbe5936b8 |
| children | da91efe96a93 |
| rev | line source |
|---|---|
| 0 | 1 /* |
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2 * Copyright (c) 2000, 2004, 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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6941466: Oracle rebranding changes for Hotspot repositories
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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 import sun.jvm.hotspot.utilities.*; | |
| 33 | |
| 34 // ObjArrayKlass is the klass for ObjArrays | |
| 35 | |
| 36 public class ObjArrayKlass extends ArrayKlass { | |
| 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 { | |
| 46 Type type = db.lookupType("objArrayKlass"); | |
| 47 elementKlass = new OopField(type.getOopField("_element_klass"), Oop.getHeaderSize()); | |
| 48 bottomKlass = new OopField(type.getOopField("_bottom_klass"), Oop.getHeaderSize()); | |
| 49 } | |
| 50 | |
| 51 ObjArrayKlass(OopHandle handle, ObjectHeap heap) { | |
| 52 super(handle, heap); | |
| 53 } | |
| 54 | |
| 55 private static OopField elementKlass; | |
| 56 private static OopField bottomKlass; | |
| 57 | |
| 58 public Klass getElementKlass() { return (Klass) elementKlass.getValue(this); } | |
| 59 public Klass getBottomKlass() { return (Klass) bottomKlass.getValue(this); } | |
| 60 | |
| 61 public long computeModifierFlags() { | |
| 62 long elementFlags = getElementKlass().computeModifierFlags(); | |
| 63 long arrayFlags = 0L; | |
| 64 if ((elementFlags & (JVM_ACC_PUBLIC | JVM_ACC_PROTECTED)) != 0) { | |
| 65 // The array type is public if the component type is public or protected | |
| 66 arrayFlags = JVM_ACC_ABSTRACT | JVM_ACC_FINAL | JVM_ACC_PUBLIC; | |
| 67 } else { | |
| 68 // The array type is private if the component type is private | |
| 69 arrayFlags = JVM_ACC_ABSTRACT | JVM_ACC_FINAL; | |
| 70 } | |
| 71 return arrayFlags; | |
| 72 } | |
| 73 | |
| 74 public void iterateFields(OopVisitor visitor, boolean doVMFields) { | |
| 75 super.iterateFields(visitor, doVMFields); | |
| 76 if (doVMFields) { | |
| 77 visitor.doOop(elementKlass, true); | |
| 78 visitor.doOop(bottomKlass, true); | |
| 79 } | |
| 80 } | |
| 81 | |
| 82 public Klass arrayKlassImpl(boolean orNull, int n) { | |
| 83 if (Assert.ASSERTS_ENABLED) { | |
| 84 Assert.that(getDimension() <= n, "check order of chain"); | |
| 85 } | |
| 86 int dimension = (int) getDimension(); | |
| 87 if (dimension == n) { | |
| 88 return this; | |
| 89 } | |
| 90 ObjArrayKlass ak = (ObjArrayKlass) getHigherDimension(); | |
| 91 if (ak == null) { | |
| 92 if (orNull) return null; | |
| 93 // FIXME: would need to change in reflective system to actually | |
| 94 // allocate klass | |
| 95 throw new RuntimeException("Can not allocate array klasses in debugging system"); | |
| 96 } | |
| 97 | |
| 98 if (orNull) { | |
| 99 return ak.arrayKlassOrNull(n); | |
| 100 } | |
| 101 return ak.arrayKlass(n); | |
| 102 } | |
| 103 | |
| 104 public Klass arrayKlassImpl(boolean orNull) { | |
| 105 return arrayKlassImpl(orNull, (int) (getDimension() + 1)); | |
| 106 } | |
| 107 | |
| 108 public void printValueOn(PrintStream tty) { | |
| 109 tty.print("ObjArrayKlass for "); | |
| 110 getElementKlass().printValueOn(tty); | |
| 111 } | |
| 112 }; |