Mercurial > hg > graal-compiler
annotate agent/src/share/classes/sun/jvm/hotspot/utilities/BasicHashtableEntry.java @ 1552:c18cbe5936b8
6941466: Oracle rebranding changes for Hotspot repositories
Summary: Change all the Sun copyrights to Oracle copyright
Reviewed-by: ohair
| author | trims |
|---|---|
| date | Thu, 27 May 2010 19:08:38 -0700 |
| parents | a61af66fc99e |
| children | d2a62e0f25eb |
| rev | line source |
|---|---|
| 0 | 1 /* |
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6941466: Oracle rebranding changes for Hotspot repositories
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2 * Copyright (c) 2003, 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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6941466: Oracle rebranding changes for Hotspot repositories
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19 * Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA |
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c18cbe5936b8
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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6941466: Oracle rebranding changes for Hotspot repositories
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21 * questions. |
| 0 | 22 * |
| 23 */ | |
| 24 | |
| 25 package sun.jvm.hotspot.utilities; | |
| 26 | |
| 27 import java.util.*; | |
| 28 import sun.jvm.hotspot.debugger.*; | |
| 29 import sun.jvm.hotspot.oops.Oop; | |
| 30 import sun.jvm.hotspot.oops.ObjectHeap; | |
| 31 import sun.jvm.hotspot.types.*; | |
| 32 import sun.jvm.hotspot.runtime.*; | |
| 33 | |
| 34 public class BasicHashtableEntry extends VMObject { | |
| 35 static { | |
| 36 VM.registerVMInitializedObserver(new Observer() { | |
| 37 public void update(Observable o, Object data) { | |
| 38 initialize(VM.getVM().getTypeDataBase()); | |
| 39 } | |
| 40 }); | |
| 41 } | |
| 42 | |
| 43 private static synchronized void initialize(TypeDataBase db) { | |
| 44 Type type = db.lookupType("BasicHashtableEntry"); | |
| 45 hashField = type.getCIntegerField("_hash"); | |
| 46 nextField = type.getAddressField("_next"); | |
| 47 } | |
| 48 | |
| 49 // Fields | |
| 50 private static CIntegerField hashField; | |
| 51 private static AddressField nextField; | |
| 52 | |
| 53 // Accessors | |
| 54 public long hash() { | |
| 55 return hashField.getValue(addr) & 0xFFFFFFFFL; | |
| 56 } | |
| 57 | |
| 58 private long nextAddressValue() { | |
| 59 Debugger dbg = VM.getVM().getDebugger(); | |
| 60 Address nextValue = nextField.getValue(addr); | |
| 61 return (nextValue != null) ? dbg.getAddressValue(nextValue) : 0L; | |
| 62 } | |
| 63 | |
| 64 public boolean isShared() { | |
| 65 return (nextAddressValue() & 1L) != 0; | |
| 66 } | |
| 67 | |
| 68 public BasicHashtableEntry next() { | |
| 69 Address nextValue = nextField.getValue(addr); | |
| 70 Address next = (nextValue != null)? nextValue.andWithMask(-2L) : null; | |
| 71 // using this.getClass so that return type will be as expected in | |
| 72 // subclass context. But, because we can't use covariant return type | |
| 73 // caller has to use this next and cast the result to correct type. | |
| 74 return (BasicHashtableEntry) VMObjectFactory.newObject(this.getClass(), next); | |
| 75 } | |
| 76 | |
| 77 public BasicHashtableEntry(Address addr) { | |
| 78 super(addr); | |
| 79 } | |
| 80 } |