Thu, 19 Sep 2013 09:36:51 -0700
Added tag jdk8-b108 for changeset 85072013aad4
coleenp@3698 | 1 | /* |
coleenp@3698 | 2 | * Copyright 2012 SAP AG. All Rights Reserved. |
coleenp@3698 | 3 | * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER. |
coleenp@3698 | 4 | * |
coleenp@3698 | 5 | * This code is free software; you can redistribute it and/or modify it |
coleenp@3698 | 6 | * under the terms of the GNU General Public License version 2 only, as |
coleenp@3698 | 7 | * published by the Free Software Foundation. |
coleenp@3698 | 8 | * |
coleenp@3698 | 9 | * This code is distributed in the hope that it will be useful, but WITHOUT |
coleenp@3698 | 10 | * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or |
coleenp@3698 | 11 | * FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License |
coleenp@3698 | 12 | * version 2 for more details (a copy is included in the LICENSE file that |
coleenp@3698 | 13 | * accompanied this code). |
coleenp@3698 | 14 | * |
coleenp@3698 | 15 | * You should have received a copy of the GNU General Public License version |
coleenp@3698 | 16 | * 2 along with this work; if not, write to the Free Software Foundation, |
coleenp@3698 | 17 | * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA. |
coleenp@3698 | 18 | * |
coleenp@3698 | 19 | * Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA |
coleenp@3698 | 20 | * or visit www.oracle.com if you need additional information or have any |
coleenp@3698 | 21 | * questions. |
coleenp@3698 | 22 | */ |
coleenp@3698 | 23 | |
coleenp@3698 | 24 | /* |
coleenp@3698 | 25 | * @test FieldMonitor.java |
coleenp@3698 | 26 | * @bug 7158988 |
ctornqvi@4519 | 27 | * @key regression |
coleenp@3698 | 28 | * @summary verify jvm does not crash while debugging |
ctornqvi@4519 | 29 | * @run compile TestPostFieldModification.java |
ctornqvi@4519 | 30 | * @run main/othervm FieldMonitor |
coleenp@3698 | 31 | * @author axel.siebenborn@sap.com |
coleenp@3698 | 32 | */ |
coleenp@3698 | 33 | import java.io.BufferedReader; |
coleenp@3698 | 34 | import java.io.IOException; |
coleenp@3698 | 35 | import java.io.InputStream; |
coleenp@3698 | 36 | import java.io.InputStreamReader; |
coleenp@3698 | 37 | import java.io.OutputStream; |
coleenp@3698 | 38 | import java.io.OutputStreamWriter; |
coleenp@3698 | 39 | import java.io.Reader; |
coleenp@3698 | 40 | import java.io.Writer; |
coleenp@3698 | 41 | import java.util.Iterator; |
coleenp@3698 | 42 | import java.util.List; |
coleenp@3698 | 43 | import java.util.Map; |
coleenp@3698 | 44 | |
coleenp@3698 | 45 | import com.sun.jdi.Bootstrap; |
coleenp@3698 | 46 | import com.sun.jdi.Field; |
coleenp@3698 | 47 | import com.sun.jdi.ReferenceType; |
coleenp@3698 | 48 | import com.sun.jdi.VirtualMachine; |
coleenp@3698 | 49 | import com.sun.jdi.connect.Connector; |
coleenp@3698 | 50 | import com.sun.jdi.connect.IllegalConnectorArgumentsException; |
coleenp@3698 | 51 | import com.sun.jdi.connect.LaunchingConnector; |
coleenp@3698 | 52 | import com.sun.jdi.connect.VMStartException; |
coleenp@3698 | 53 | import com.sun.jdi.event.ClassPrepareEvent; |
coleenp@3698 | 54 | import com.sun.jdi.event.Event; |
coleenp@3698 | 55 | import com.sun.jdi.event.EventQueue; |
coleenp@3698 | 56 | import com.sun.jdi.event.EventSet; |
coleenp@3698 | 57 | import com.sun.jdi.event.ModificationWatchpointEvent; |
coleenp@3698 | 58 | import com.sun.jdi.event.VMDeathEvent; |
coleenp@3698 | 59 | import com.sun.jdi.event.VMDisconnectEvent; |
coleenp@3698 | 60 | import com.sun.jdi.request.ClassPrepareRequest; |
coleenp@3698 | 61 | import com.sun.jdi.request.EventRequest; |
coleenp@3698 | 62 | import com.sun.jdi.request.EventRequestManager; |
coleenp@3698 | 63 | import com.sun.jdi.request.ModificationWatchpointRequest; |
coleenp@3698 | 64 | |
coleenp@3698 | 65 | public class FieldMonitor { |
coleenp@3698 | 66 | |
coleenp@3698 | 67 | public static final String CLASS_NAME = "TestPostFieldModification"; |
coleenp@3698 | 68 | public static final String FIELD_NAME = "value"; |
coleenp@3698 | 69 | public static final String ARGUMENTS = "-Xshare:off -XX:+PrintGC"; |
coleenp@3698 | 70 | |
coleenp@3698 | 71 | public static void main(String[] args) |
coleenp@3698 | 72 | throws IOException, InterruptedException { |
coleenp@3698 | 73 | |
coleenp@3698 | 74 | StringBuffer sb = new StringBuffer(); |
coleenp@3698 | 75 | |
coleenp@3698 | 76 | for (int i=0; i < args.length; i++) { |
coleenp@3698 | 77 | sb.append(' '); |
coleenp@3698 | 78 | sb.append(args[i]); |
coleenp@3698 | 79 | } |
coleenp@3698 | 80 | //VirtualMachine vm = launchTarget(sb.toString()); |
coleenp@3698 | 81 | VirtualMachine vm = launchTarget(CLASS_NAME); |
coleenp@3698 | 82 | |
coleenp@3698 | 83 | System.out.println("Vm launched"); |
coleenp@3698 | 84 | // set watch field on already loaded classes |
coleenp@3698 | 85 | List<ReferenceType> referenceTypes = vm |
coleenp@3698 | 86 | .classesByName(CLASS_NAME); |
coleenp@3698 | 87 | for (ReferenceType refType : referenceTypes) { |
coleenp@3698 | 88 | addFieldWatch(vm, refType); |
coleenp@3698 | 89 | } |
coleenp@3698 | 90 | // watch for loaded classes |
coleenp@3698 | 91 | addClassWatch(vm); |
coleenp@3698 | 92 | |
coleenp@3698 | 93 | // process events |
coleenp@3698 | 94 | EventQueue eventQueue = vm.eventQueue(); |
coleenp@3698 | 95 | // resume the vm |
coleenp@3698 | 96 | |
coleenp@3698 | 97 | Process process = vm.process(); |
coleenp@3698 | 98 | |
coleenp@3698 | 99 | |
coleenp@3698 | 100 | // Copy target's output and error to our output and error. |
coleenp@3698 | 101 | Thread outThread = new StreamRedirectThread("out reader", process.getInputStream()); |
coleenp@3698 | 102 | Thread errThread = new StreamRedirectThread("error reader", process.getErrorStream()); |
coleenp@3698 | 103 | |
coleenp@3698 | 104 | errThread.start(); |
coleenp@3698 | 105 | outThread.start(); |
coleenp@3698 | 106 | |
coleenp@3698 | 107 | |
coleenp@3698 | 108 | vm.resume(); |
coleenp@3698 | 109 | boolean connected = true; |
coleenp@3698 | 110 | while (connected) { |
coleenp@3698 | 111 | EventSet eventSet = eventQueue.remove(); |
coleenp@3698 | 112 | for (Event event : eventSet) { |
coleenp@3698 | 113 | if (event instanceof VMDeathEvent |
coleenp@3698 | 114 | || event instanceof VMDisconnectEvent) { |
coleenp@3698 | 115 | // exit |
coleenp@3698 | 116 | connected = false; |
coleenp@3698 | 117 | } else if (event instanceof ClassPrepareEvent) { |
coleenp@3698 | 118 | // watch field on loaded class |
coleenp@3698 | 119 | System.out.println("ClassPrepareEvent"); |
coleenp@3698 | 120 | ClassPrepareEvent classPrepEvent = (ClassPrepareEvent) event; |
coleenp@3698 | 121 | ReferenceType refType = classPrepEvent |
coleenp@3698 | 122 | .referenceType(); |
coleenp@3698 | 123 | addFieldWatch(vm, refType); |
coleenp@3698 | 124 | } else if (event instanceof ModificationWatchpointEvent) { |
coleenp@3698 | 125 | System.out.println("sleep for 500 ms"); |
coleenp@3698 | 126 | Thread.sleep(500); |
coleenp@3698 | 127 | System.out.println("resume..."); |
coleenp@3698 | 128 | |
coleenp@3698 | 129 | ModificationWatchpointEvent modEvent = (ModificationWatchpointEvent) event; |
coleenp@3698 | 130 | System.out.println("old=" |
coleenp@3698 | 131 | + modEvent.valueCurrent()); |
coleenp@3698 | 132 | System.out.println("new=" + modEvent.valueToBe()); |
coleenp@3698 | 133 | System.out.println(); |
coleenp@3698 | 134 | } |
coleenp@3698 | 135 | } |
coleenp@3698 | 136 | eventSet.resume(); |
coleenp@3698 | 137 | } |
coleenp@3698 | 138 | // Shutdown begins when event thread terminates |
coleenp@3698 | 139 | try { |
coleenp@3698 | 140 | errThread.join(); // Make sure output is forwarded |
coleenp@3698 | 141 | outThread.join(); |
coleenp@3698 | 142 | } catch (InterruptedException exc) { |
coleenp@3698 | 143 | // we don't interrupt |
coleenp@3698 | 144 | } |
coleenp@3698 | 145 | } |
coleenp@3698 | 146 | |
coleenp@3698 | 147 | /** |
coleenp@3698 | 148 | * Find a com.sun.jdi.CommandLineLaunch connector |
coleenp@3698 | 149 | */ |
coleenp@3698 | 150 | static LaunchingConnector findLaunchingConnector() { |
coleenp@3698 | 151 | List <Connector> connectors = Bootstrap.virtualMachineManager().allConnectors(); |
coleenp@3698 | 152 | Iterator <Connector> iter = connectors.iterator(); |
coleenp@3698 | 153 | while (iter.hasNext()) { |
coleenp@3698 | 154 | Connector connector = iter.next(); |
coleenp@3698 | 155 | if (connector.name().equals("com.sun.jdi.CommandLineLaunch")) { |
coleenp@3698 | 156 | return (LaunchingConnector)connector; |
coleenp@3698 | 157 | } |
coleenp@3698 | 158 | } |
coleenp@3698 | 159 | throw new Error("No launching connector"); |
coleenp@3698 | 160 | } |
coleenp@3698 | 161 | /** |
coleenp@3698 | 162 | * Return the launching connector's arguments. |
coleenp@3698 | 163 | */ |
coleenp@3698 | 164 | static Map <String,Connector.Argument> connectorArguments(LaunchingConnector connector, String mainArgs) { |
coleenp@3698 | 165 | Map<String,Connector.Argument> arguments = connector.defaultArguments(); |
coleenp@3698 | 166 | for (String key : arguments.keySet()) { |
coleenp@3698 | 167 | System.out.println(key); |
coleenp@3698 | 168 | } |
coleenp@3698 | 169 | |
coleenp@3698 | 170 | Connector.Argument mainArg = (Connector.Argument)arguments.get("main"); |
coleenp@3698 | 171 | if (mainArg == null) { |
coleenp@3698 | 172 | throw new Error("Bad launching connector"); |
coleenp@3698 | 173 | } |
coleenp@3698 | 174 | mainArg.setValue(mainArgs); |
coleenp@3698 | 175 | |
coleenp@3698 | 176 | Connector.Argument optionsArg = (Connector.Argument)arguments.get("options"); |
coleenp@3698 | 177 | if (optionsArg == null) { |
coleenp@3698 | 178 | throw new Error("Bad launching connector"); |
coleenp@3698 | 179 | } |
coleenp@3698 | 180 | optionsArg.setValue(ARGUMENTS); |
coleenp@3698 | 181 | return arguments; |
coleenp@3698 | 182 | } |
coleenp@3698 | 183 | |
coleenp@3698 | 184 | static VirtualMachine launchTarget(String mainArgs) { |
coleenp@3698 | 185 | LaunchingConnector connector = findLaunchingConnector(); |
coleenp@3698 | 186 | Map arguments = connectorArguments(connector, mainArgs); |
coleenp@3698 | 187 | try { |
coleenp@3698 | 188 | return (VirtualMachine) connector.launch(arguments); |
coleenp@3698 | 189 | } catch (IOException exc) { |
coleenp@3698 | 190 | throw new Error("Unable to launch target VM: " + exc); |
coleenp@3698 | 191 | } catch (IllegalConnectorArgumentsException exc) { |
coleenp@3698 | 192 | throw new Error("Internal error: " + exc); |
coleenp@3698 | 193 | } catch (VMStartException exc) { |
coleenp@3698 | 194 | throw new Error("Target VM failed to initialize: " + |
coleenp@3698 | 195 | exc.getMessage()); |
coleenp@3698 | 196 | } |
coleenp@3698 | 197 | } |
coleenp@3698 | 198 | |
coleenp@3698 | 199 | |
coleenp@3698 | 200 | private static void addClassWatch(VirtualMachine vm) { |
coleenp@3698 | 201 | EventRequestManager erm = vm.eventRequestManager(); |
coleenp@3698 | 202 | ClassPrepareRequest classPrepareRequest = erm |
coleenp@3698 | 203 | .createClassPrepareRequest(); |
coleenp@3698 | 204 | classPrepareRequest.addClassFilter(CLASS_NAME); |
coleenp@3698 | 205 | classPrepareRequest.setEnabled(true); |
coleenp@3698 | 206 | } |
coleenp@3698 | 207 | |
coleenp@3698 | 208 | |
coleenp@3698 | 209 | private static void addFieldWatch(VirtualMachine vm, |
coleenp@3698 | 210 | ReferenceType refType) { |
coleenp@3698 | 211 | EventRequestManager erm = vm.eventRequestManager(); |
coleenp@3698 | 212 | Field field = refType.fieldByName(FIELD_NAME); |
coleenp@3698 | 213 | ModificationWatchpointRequest modificationWatchpointRequest = erm |
coleenp@3698 | 214 | .createModificationWatchpointRequest(field); |
coleenp@3698 | 215 | modificationWatchpointRequest.setSuspendPolicy(EventRequest.SUSPEND_EVENT_THREAD); |
coleenp@3698 | 216 | modificationWatchpointRequest.setEnabled(true); |
coleenp@3698 | 217 | } |
coleenp@3698 | 218 | } |
coleenp@3698 | 219 | |
coleenp@3698 | 220 | class StreamRedirectThread extends Thread { |
coleenp@3698 | 221 | |
coleenp@3698 | 222 | private final BufferedReader in; |
coleenp@3698 | 223 | |
coleenp@3698 | 224 | private static final int BUFFER_SIZE = 2048; |
coleenp@3698 | 225 | |
coleenp@3698 | 226 | /** |
coleenp@3698 | 227 | * Set up for copy. |
coleenp@3698 | 228 | * @param name Name of the thread |
coleenp@3698 | 229 | * @param in Stream to copy from |
coleenp@3698 | 230 | * @param out Stream to copy to |
coleenp@3698 | 231 | */ |
coleenp@3698 | 232 | StreamRedirectThread(String name, InputStream in) { |
coleenp@3698 | 233 | super(name); |
coleenp@3698 | 234 | this.in = new BufferedReader(new InputStreamReader(in)); |
coleenp@3698 | 235 | } |
coleenp@3698 | 236 | |
coleenp@3698 | 237 | /** |
coleenp@3698 | 238 | * Copy. |
coleenp@3698 | 239 | */ |
coleenp@3698 | 240 | public void run() { |
coleenp@3698 | 241 | try { |
coleenp@3698 | 242 | String line; |
coleenp@3698 | 243 | while ((line = in.readLine ()) != null) { |
coleenp@3698 | 244 | System.out.println ("testvm: " + line); |
coleenp@3698 | 245 | } |
coleenp@3698 | 246 | System.out.flush(); |
coleenp@3698 | 247 | } catch(IOException exc) { |
coleenp@3698 | 248 | System.err.println("Child I/O Transfer - " + exc); |
coleenp@3698 | 249 | } |
coleenp@3698 | 250 | } |
coleenp@3698 | 251 | } |