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annotate agent/src/share/classes/sun/jvm/hotspot/runtime/vmSymbols.java @ 12226:7944aba7ba41

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8015107: NPG: Use consistent naming for metaspace concepts Reviewed-by: coleenp, mgerdin, hseigel
author ehelin
date Mon, 12 Aug 2013 17:37:02 +0200
parents cb315dc80374
children
Ignore whitespace changes - Everywhere: Within whitespace: At end of lines:
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1 /*
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2 * Copyright (c) 2011, Oracle and/or its affiliates. All rights reserved.
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3 * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.
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4 *
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5 * This code is free software; you can redistribute it and/or modify it
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6 * under the terms of the GNU General Public License version 2 only, as
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7 * published by the Free Software Foundation.
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8 *
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9 * This code is distributed in the hope that it will be useful, but WITHOUT
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10 * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
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11 * FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License
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12 * version 2 for more details (a copy is included in the LICENSE file that
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13 * accompanied this code).
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14 *
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15 * You should have received a copy of the GNU General Public License version
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16 * 2 along with this work; if not, write to the Free Software Foundation,
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17 * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA.
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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.
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22 *
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23 */
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24
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25 package sun.jvm.hotspot.runtime;
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26
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27 import java.io.*;
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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.memory.*;
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31 import sun.jvm.hotspot.oops.*;
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32 import sun.jvm.hotspot.runtime.*;
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33 import sun.jvm.hotspot.types.*;
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34 import sun.jvm.hotspot.utilities.*;
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35
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36
cb315dc80374 7092278: "jmap -finalizerinfo" throws "sun.jvm.hotspot.utilities.AssertionFailure: invalid cp index 0 137"
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37 public class vmSymbols {
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38 static {
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39 VM.registerVMInitializedObserver(new Observer() {
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40 public void update(Observable o, Object data) {
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41 initialize(VM.getVM().getTypeDataBase());
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42 }
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43 });
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44 }
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45
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46 private static Address symbolsAddress;
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47 private static int FIRST_SID;
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48 private static int SID_LIMIT;
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49
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50 private static synchronized void initialize(TypeDataBase db) throws WrongTypeException {
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51 Type type = db.lookupType("vmSymbols");
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52 symbolsAddress = type.getAddressField("_symbols[0]").getStaticFieldAddress();
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53 FIRST_SID = db.lookupIntConstant("vmSymbols::FIRST_SID");
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54 SID_LIMIT = db.lookupIntConstant("vmSymbols::SID_LIMIT");
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55 }
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56
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57 public static Symbol symbolAt(int id) {
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58 if (id < FIRST_SID || id >= SID_LIMIT) throw new IndexOutOfBoundsException("bad SID " + id);
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59 return Symbol.create(symbolsAddress.getAddressAt(id * VM.getVM().getAddressSize()));
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60 }
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61 }