Mercurial > hg > graal-compiler
annotate agent/src/share/classes/sun/jvm/hotspot/memory/StringTable.java @ 2378:924777755fad
6962930: make the string table size configurable
Reviewed-by: never, phh, stefank, kamg, dholmes, coleenp
| author | jcoomes |
|---|---|
| date | Mon, 21 Mar 2011 18:38:00 -0700 |
| parents | 3582bf76420e |
| children | 1d1603768966 |
| rev | line source |
|---|---|
| 0 | 1 /* |
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2 * Copyright (c) 2005, 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.memory; | |
| 26 | |
| 27 import java.io.*; | |
| 28 import java.util.*; | |
| 29 import sun.jvm.hotspot.debugger.*; | |
| 30 import sun.jvm.hotspot.oops.*; | |
| 31 import sun.jvm.hotspot.types.*; | |
| 32 import sun.jvm.hotspot.runtime.*; | |
| 33 import sun.jvm.hotspot.utilities.*; | |
| 34 | |
| 35 public class StringTable extends sun.jvm.hotspot.utilities.Hashtable { | |
| 36 static { | |
| 37 VM.registerVMInitializedObserver(new Observer() { | |
| 38 public void update(Observable o, Object data) { | |
| 39 initialize(VM.getVM().getTypeDataBase()); | |
| 40 } | |
| 41 }); | |
| 42 } | |
| 43 | |
| 44 private static synchronized void initialize(TypeDataBase db) { | |
| 45 Type type = db.lookupType("StringTable"); | |
| 46 theTableField = type.getAddressField("_the_table"); | |
| 47 } | |
| 48 | |
| 49 // Fields | |
| 50 private static AddressField theTableField; | |
| 51 | |
| 52 // Accessors | |
| 53 public static StringTable getTheTable() { | |
| 54 Address tmp = theTableField.getValue(); | |
| 55 return (StringTable) VMObjectFactory.newObject(StringTable.class, tmp); | |
| 56 } | |
| 57 | |
| 58 public StringTable(Address addr) { | |
| 59 super(addr); | |
| 60 } | |
| 61 | |
| 62 public interface StringVisitor { | |
| 63 public void visit(Instance string); | |
| 64 } | |
| 65 | |
| 66 public void stringsDo(StringVisitor visitor) { | |
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67 ObjectHeap oh = VM.getVM().getObjectHeap(); |
| 0 | 68 int numBuckets = tableSize(); |
| 69 for (int i = 0; i < numBuckets; i++) { | |
| 70 for (HashtableEntry e = (HashtableEntry) bucket(i); e != null; | |
| 71 e = (HashtableEntry) e.next()) { | |
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72 Instance s = (Instance)oh.newOop(e.literalValue().addOffsetToAsOopHandle(0)); |
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73 visitor.visit(s); |
| 0 | 74 } |
| 75 } | |
| 76 } | |
| 77 } |