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annotate agent/src/share/classes/sun/jvm/hotspot/gc_implementation/g1/G1MonitoringSupport.java @ 4830:0b3d1ec6eaee

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7097586: G1: improve the per-space output when using jmap -heap Summary: Extend the jmap -heap output for G1 to include some more G1-specific information. Reviewed-by: brutisso, johnc, poonam
author tonyp
date Wed, 18 Jan 2012 10:30:12 -0500
parents 81aa07130d30
children
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1 /*
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2 * Copyright (c) 2011, 2012, 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.gc_implementation.g1;
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26
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27 import java.util.Observable;
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28 import java.util.Observer;
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29
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30 import sun.jvm.hotspot.debugger.Address;
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31 import sun.jvm.hotspot.runtime.VM;
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32 import sun.jvm.hotspot.runtime.VMObject;
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33 import sun.jvm.hotspot.types.CIntegerField;
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34 import sun.jvm.hotspot.types.Type;
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35 import sun.jvm.hotspot.types.TypeDataBase;
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36
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37 // Mirror class for G1MonitoringSupport.
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38
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39 public class G1MonitoringSupport extends VMObject {
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40 // size_t _eden_committed;
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41 static private CIntegerField edenCommittedField;
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42 // size_t _eden_used;
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43 static private CIntegerField edenUsedField;
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44 // size_t _survivor_committed;
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45 static private CIntegerField survivorCommittedField;
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46 // size_t _survivor_used;
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47 static private CIntegerField survivorUsedField;
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48 // size_t _old_committed;
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49 static private CIntegerField oldCommittedField;
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50 // size_t _old_used;
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51 static private CIntegerField oldUsedField;
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52
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53 static {
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54 VM.registerVMInitializedObserver(new Observer() {
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55 public void update(Observable o, Object data) {
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56 initialize(VM.getVM().getTypeDataBase());
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57 }
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58 });
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59 }
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60
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61 static private synchronized void initialize(TypeDataBase db) {
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62 Type type = db.lookupType("G1MonitoringSupport");
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63
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64 edenCommittedField = type.getCIntegerField("_eden_committed");
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65 edenUsedField = type.getCIntegerField("_eden_used");
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66 survivorCommittedField = type.getCIntegerField("_survivor_committed");
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67 survivorUsedField = type.getCIntegerField("_survivor_used");
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68 oldCommittedField = type.getCIntegerField("_old_committed");
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69 oldUsedField = type.getCIntegerField("_old_used");
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70 }
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71
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72 public long edenCommitted() {
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73 return edenCommittedField.getValue(addr);
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74 }
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75
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76 public long edenUsed() {
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77 return edenUsedField.getValue(addr);
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78 }
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79
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80 public long edenRegionNum() {
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81 return edenUsed() / HeapRegion.grainBytes();
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82 }
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83
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84 public long survivorCommitted() {
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85 return survivorCommittedField.getValue(addr);
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86 }
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87
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88 public long survivorUsed() {
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89 return survivorUsedField.getValue(addr);
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90 }
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91
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92 public long survivorRegionNum() {
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93 return survivorUsed() / HeapRegion.grainBytes();
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94 }
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95
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96 public long oldCommitted() {
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97 return oldCommittedField.getValue(addr);
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98 }
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99
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100 public long oldUsed() {
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101 return oldUsedField.getValue(addr);
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102 }
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103
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104 public G1MonitoringSupport(Address addr) {
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105 super(addr);
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106 }
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107 }