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annotate test/runtime/7158988/FieldMonitor.java @ 19147:609480dfa0d8

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Create ExplodeLoop plugin prototype. Special sort for blocks from bci block map builder for explode loop methods. Graph builder plugin for customizing static field accesses. New Truffle option TruffleExcludeAssertions default true that excludes assertion code from being partial evaluated in the new partial evaluator.
author Thomas Wuerthinger <thomas.wuerthinger@oracle.com>
date Thu, 05 Feb 2015 03:25:21 +0100
parents 52b4284cb496
children
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1 /*
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2 * Copyright 2012 SAP AG. 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 * @test FieldMonitor.java
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26 * @bug 7158988
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27 * @key regression
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28 * @summary verify jvm does not crash while debugging
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29 * @run compile TestPostFieldModification.java
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30 * @run main/othervm FieldMonitor
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31 * @author axel.siebenborn@sap.com
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32 */
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33 import java.io.BufferedReader;
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34 import java.io.IOException;
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35 import java.io.InputStream;
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36 import java.io.InputStreamReader;
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37 import java.util.Iterator;
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38 import java.util.List;
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39 import java.util.Map;
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40
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41 import com.sun.jdi.Bootstrap;
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42 import com.sun.jdi.Field;
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43 import com.sun.jdi.ReferenceType;
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44 import com.sun.jdi.VirtualMachine;
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45 import com.sun.jdi.connect.Connector;
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46 import com.sun.jdi.connect.IllegalConnectorArgumentsException;
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47 import com.sun.jdi.connect.LaunchingConnector;
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48 import com.sun.jdi.connect.VMStartException;
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49 import com.sun.jdi.event.ClassPrepareEvent;
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50 import com.sun.jdi.event.Event;
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51 import com.sun.jdi.event.EventQueue;
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52 import com.sun.jdi.event.EventSet;
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53 import com.sun.jdi.event.ModificationWatchpointEvent;
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54 import com.sun.jdi.event.VMDeathEvent;
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55 import com.sun.jdi.event.VMStartEvent;
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56 import com.sun.jdi.event.VMDisconnectEvent;
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57 import com.sun.jdi.request.ClassPrepareRequest;
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58 import com.sun.jdi.request.EventRequest;
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59 import com.sun.jdi.request.EventRequestManager;
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60 import com.sun.jdi.request.ModificationWatchpointRequest;
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61
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62 public class FieldMonitor {
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63
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64 public static final String CLASS_NAME = "TestPostFieldModification";
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65 public static final String FIELD_NAME = "value";
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66 public static final String ARGUMENTS = "-Xshare:off -XX:+PrintGC";
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67
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68 public static void main(String[] args)
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69 throws IOException, InterruptedException {
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70
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71 //VirtualMachine vm = launchTarget(sb.toString());
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72 VirtualMachine vm = launchTarget(CLASS_NAME);
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73
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74 System.out.println("Vm launched");
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75
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76 // process events
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77 EventQueue eventQueue = vm.eventQueue();
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78 // resume the vm
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79
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80 Process process = vm.process();
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81
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82
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83 // Copy target's output and error to our output and error.
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84 Thread outThread = new StreamRedirectThread("out reader", process.getInputStream());
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85 Thread errThread = new StreamRedirectThread("error reader", process.getErrorStream());
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86
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87 errThread.start();
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88 outThread.start();
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89
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90 boolean connected = true;
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91 int watched = 0;
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92 while (connected) {
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93 EventSet eventSet = eventQueue.remove();
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94 for (Event event : eventSet) {
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95 System.out.println("FieldMonitor-main receives: "+event);
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96 if (event instanceof VMStartEvent) {
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97 addClassWatch(vm);
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98 } else if (event instanceof VMDeathEvent
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99 || event instanceof VMDisconnectEvent) {
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100 // exit
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101 connected = false;
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102 } else if (event instanceof ClassPrepareEvent) {
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103 // watch field on loaded class
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104 System.out.println("ClassPrepareEvent");
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105 ClassPrepareEvent classPrepEvent = (ClassPrepareEvent) event;
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106 ReferenceType refType = classPrepEvent
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107 .referenceType();
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108 addFieldWatch(vm, refType);
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109 } else if (event instanceof ModificationWatchpointEvent) {
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110 watched++;
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111 System.out.println("sleep for 500 ms");
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112 Thread.sleep(500);
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113
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114 ModificationWatchpointEvent modEvent = (ModificationWatchpointEvent) event;
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115 System.out.println("old="
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116 + modEvent.valueCurrent());
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117 System.out.println("new=" + modEvent.valueToBe());
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118 }
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119 }
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120 System.out.println("resume...");
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121 eventSet.resume();
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122 }
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123 // Shutdown begins when event thread terminates
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124 try {
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125 errThread.join(); // Make sure output is forwarded
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126 outThread.join();
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127 } catch (InterruptedException exc) {
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128 // we don't interrupt
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129 }
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130
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131 if (watched != 11) { // init + 10 modifications in TestPostFieldModification class
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132 throw new Error("Expected to receive 11 times ModificationWatchpointEvent, but got "+watched);
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133 }
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134 }
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135
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136 /**
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137 * Find a com.sun.jdi.CommandLineLaunch connector
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138 */
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139 static LaunchingConnector findLaunchingConnector() {
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140 List <Connector> connectors = Bootstrap.virtualMachineManager().allConnectors();
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141 Iterator <Connector> iter = connectors.iterator();
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142 while (iter.hasNext()) {
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143 Connector connector = iter.next();
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144 if (connector.name().equals("com.sun.jdi.CommandLineLaunch")) {
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145 return (LaunchingConnector)connector;
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146 }
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147 }
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148 throw new Error("No launching connector");
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149 }
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150 /**
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151 * Return the launching connector's arguments.
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152 */
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153 static Map <String,Connector.Argument> connectorArguments(LaunchingConnector connector, String mainArgs) {
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154 Map<String,Connector.Argument> arguments = connector.defaultArguments();
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155 for (String key : arguments.keySet()) {
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156 System.out.println(key);
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157 }
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158
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159 Connector.Argument mainArg = (Connector.Argument)arguments.get("main");
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160 if (mainArg == null) {
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161 throw new Error("Bad launching connector");
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162 }
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163 mainArg.setValue(mainArgs);
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164
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165 Connector.Argument optionsArg = (Connector.Argument)arguments.get("options");
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166 if (optionsArg == null) {
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167 throw new Error("Bad launching connector");
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168 }
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169 optionsArg.setValue(ARGUMENTS);
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170 return arguments;
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171 }
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172
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173 static VirtualMachine launchTarget(String mainArgs) {
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174 LaunchingConnector connector = findLaunchingConnector();
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175 Map arguments = connectorArguments(connector, mainArgs);
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176 try {
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177 return (VirtualMachine) connector.launch(arguments);
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178 } catch (IOException exc) {
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179 throw new Error("Unable to launch target VM: " + exc);
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180 } catch (IllegalConnectorArgumentsException exc) {
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181 throw new Error("Internal error: " + exc);
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182 } catch (VMStartException exc) {
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183 throw new Error("Target VM failed to initialize: " +
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184 exc.getMessage());
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185 }
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186 }
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187
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188
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189 private static void addClassWatch(VirtualMachine vm) {
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190 EventRequestManager erm = vm.eventRequestManager();
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191 ClassPrepareRequest classPrepareRequest = erm
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192 .createClassPrepareRequest();
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193 classPrepareRequest.addClassFilter(CLASS_NAME);
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194 classPrepareRequest.setEnabled(true);
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195 }
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196
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197
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198 private static void addFieldWatch(VirtualMachine vm,
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199 ReferenceType refType) {
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200 EventRequestManager erm = vm.eventRequestManager();
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201 Field field = refType.fieldByName(FIELD_NAME);
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202 ModificationWatchpointRequest modificationWatchpointRequest = erm
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203 .createModificationWatchpointRequest(field);
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204 modificationWatchpointRequest.setSuspendPolicy(EventRequest.SUSPEND_EVENT_THREAD);
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205 modificationWatchpointRequest.setEnabled(true);
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206 }
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207 }
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208
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209 class StreamRedirectThread extends Thread {
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210
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211 private final BufferedReader in;
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212
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213 private static final int BUFFER_SIZE = 2048;
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214
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215 /**
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216 * Set up for copy.
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217 * @param name Name of the thread
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218 * @param in Stream to copy from
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219 * @param out Stream to copy to
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220 */
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221 StreamRedirectThread(String name, InputStream in) {
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222 super(name);
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223 this.in = new BufferedReader(new InputStreamReader(in));
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224 }
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225
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226 /**
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227 * Copy.
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228 */
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229 public void run() {
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230 try {
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231 String line;
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232 while ((line = in.readLine ()) != null) {
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233 System.out.println ("testvm: " + line);
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234 }
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235 System.out.flush();
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236 } catch(IOException exc) {
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237 System.err.println("Child I/O Transfer - " + exc);
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238 }
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239 }
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240 }