Mercurial > hg > truffle
annotate agent/src/share/classes/sun/jvm/hotspot/types/basic/BasicOopField.java @ 113:ba764ed4b6f2
6420645: Create a vm that uses compressed oops for up to 32gb heapsizes
Summary: Compressed oops in instances, arrays, and headers. Code contributors are coleenp, phh, never, swamyv
Reviewed-by: jmasa, kamg, acorn, tbell, kvn, rasbold
| author | coleenp |
|---|---|
| date | Sun, 13 Apr 2008 17:43:42 -0400 |
| parents | a61af66fc99e |
| children | d1605aabd0a1 |
| rev | line source |
|---|---|
| 0 | 1 /* |
| 2 * Copyright 2000 Sun Microsystems, Inc. All Rights Reserved. | |
| 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 * | |
| 19 * Please contact Sun Microsystems, Inc., 4150 Network Circle, Santa Clara, | |
| 20 * CA 95054 USA or visit www.sun.com if you need additional information or | |
| 21 * have any questions. | |
| 22 * | |
| 23 */ | |
| 24 | |
| 25 package sun.jvm.hotspot.types.basic; | |
| 26 | |
| 27 import sun.jvm.hotspot.debugger.*; | |
| 28 import sun.jvm.hotspot.types.*; | |
| 29 | |
| 30 /** A specialization of BasicField which represents a field containing | |
| 31 an oop value and which adds typechecked getValue() routines | |
| 32 returning OopHandles. */ | |
| 33 | |
| 34 public class BasicOopField extends BasicField implements OopField { | |
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35 |
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36 |
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37 public BasicOopField(OopField oopf) { |
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38 super(oopf); |
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39 } |
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40 |
| 0 | 41 public BasicOopField(BasicTypeDataBase db, Type containingType, String name, Type type, |
| 42 boolean isStatic, long offset, Address staticFieldAddress) { | |
| 43 super(db, containingType, name, type, isStatic, offset, staticFieldAddress); | |
| 44 | |
| 45 if (!type.isOopType()) { | |
| 46 throw new WrongTypeException("Type of a BasicOopField must be an oop type"); | |
| 47 } | |
| 48 } | |
| 49 | |
| 50 /** The field must be nonstatic and the type of the field must be a | |
| 51 Java oop, or a WrongTypeException will be thrown. */ | |
| 52 public OopHandle getValue(Address addr) throws UnmappedAddressException, UnalignedAddressException, WrongTypeException { | |
| 53 return getOopHandle(addr); | |
| 54 } | |
| 55 | |
| 56 /** The field must be static and the type of the field must be a | |
| 57 Java oop, or a WrongTypeException will be thrown. */ | |
| 58 public OopHandle getValue() throws UnmappedAddressException, UnalignedAddressException, WrongTypeException { | |
| 59 return getOopHandle(); | |
| 60 } | |
| 61 } |