Mercurial > hg > truffle
annotate agent/src/share/classes/sun/jvm/hotspot/memory/BinaryTreeDictionary.java @ 2177:3582bf76420e
6990754: Use native memory and reference counting to implement SymbolTable
Summary: move symbols from permgen into C heap and reference count them
Reviewed-by: never, acorn, jmasa, stefank
author | coleenp |
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date | Thu, 27 Jan 2011 16:11:27 -0800 |
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1 /* |
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2 * @(#)BinaryTreeDictionary.java |
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3 * Copyright (c) 2000, 2008, Oracle and/or its affiliates. All rights reserved. |
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4 * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER. |
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5 * |
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6 * This code is free software; you can redistribute it and/or modify it |
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7 * under the terms of the GNU General Public License version 2 only, as |
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8 * published by the Free Software Foundation. |
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9 * |
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10 * This code is distributed in the hope that it will be useful, but WITHOUT |
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11 * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or |
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12 * FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License |
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13 * version 2 for more details (a copy is included in the LICENSE file that |
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14 * accompanied this code). |
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15 * |
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16 * You should have received a copy of the GNU General Public License version |
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17 * 2 along with this work; if not, write to the Free Software Foundation, |
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18 * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA. |
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19 * |
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20 * Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA |
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21 * or visit www.oracle.com if you need additional information or have any |
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22 * questions. |
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23 * |
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24 */ |
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25 |
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26 package sun.jvm.hotspot.memory; |
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27 |
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28 import java.util.*; |
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29 import sun.jvm.hotspot.debugger.*; |
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30 import sun.jvm.hotspot.types.*; |
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31 import sun.jvm.hotspot.runtime.*; |
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32 |
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33 public class BinaryTreeDictionary extends VMObject { |
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34 static { |
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35 VM.registerVMInitializedObserver(new Observer() { |
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36 public void update(Observable o, Object data) { |
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37 initialize(VM.getVM().getTypeDataBase()); |
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38 } |
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39 }); |
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40 } |
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41 |
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42 private static synchronized void initialize(TypeDataBase db) { |
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43 Type type = db.lookupType("BinaryTreeDictionary"); |
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44 totalSizeField = type.getCIntegerField("_totalSize"); |
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45 } |
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46 |
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47 // Fields |
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48 private static CIntegerField totalSizeField; |
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49 |
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50 // Accessors |
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51 public long size() { |
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52 return totalSizeField.getValue(addr); |
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53 } |
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54 |
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55 // Constructor |
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56 public BinaryTreeDictionary(Address addr) { |
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57 super(addr); |
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58 } |
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59 } |