17 * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA. 18 * 19 * Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA 20 * or visit www.oracle.com if you need additional information or have any 21 * questions. 22 */ 23 24 /* 25 * @test FieldMonitor.java 26 * @bug 7158988 27 * @key regression 28 * @summary verify jvm does not crash while debugging 29 * @run compile TestPostFieldModification.java 30 * @run main/othervm FieldMonitor 31 * @author axel.siebenborn@sap.com 32 */ 33 import java.io.BufferedReader; 34 import java.io.IOException; 35 import java.io.InputStream; 36 import java.io.InputStreamReader; 37 import java.io.OutputStream; 38 import java.io.OutputStreamWriter; 39 import java.io.Reader; 40 import java.io.Writer; 41 import java.util.Iterator; 42 import java.util.List; 43 import java.util.Map; 44 45 import com.sun.jdi.Bootstrap; 46 import com.sun.jdi.Field; 47 import com.sun.jdi.ReferenceType; 48 import com.sun.jdi.VirtualMachine; 49 import com.sun.jdi.connect.Connector; 50 import com.sun.jdi.connect.IllegalConnectorArgumentsException; 51 import com.sun.jdi.connect.LaunchingConnector; 52 import com.sun.jdi.connect.VMStartException; 53 import com.sun.jdi.event.ClassPrepareEvent; 54 import com.sun.jdi.event.Event; 55 import com.sun.jdi.event.EventQueue; 56 import com.sun.jdi.event.EventSet; 57 import com.sun.jdi.event.ModificationWatchpointEvent; 58 import com.sun.jdi.event.VMDeathEvent; 59 import com.sun.jdi.event.VMDisconnectEvent; 60 import com.sun.jdi.request.ClassPrepareRequest; 61 import com.sun.jdi.request.EventRequest; 62 import com.sun.jdi.request.EventRequestManager; 63 import com.sun.jdi.request.ModificationWatchpointRequest; 64 65 public class FieldMonitor { 66 67 public static final String CLASS_NAME = "TestPostFieldModification"; 68 public static final String FIELD_NAME = "value"; 69 public static final String ARGUMENTS = "-Xshare:off -XX:+PrintGC"; 70 71 public static void main(String[] args) 72 throws IOException, InterruptedException { 73 74 StringBuffer sb = new StringBuffer(); 75 76 for (int i=0; i < args.length; i++) { 77 sb.append(' '); 78 sb.append(args[i]); 79 } 80 //VirtualMachine vm = launchTarget(sb.toString()); 81 VirtualMachine vm = launchTarget(CLASS_NAME); 82 83 System.out.println("Vm launched"); 84 // set watch field on already loaded classes 85 List<ReferenceType> referenceTypes = vm 86 .classesByName(CLASS_NAME); 87 for (ReferenceType refType : referenceTypes) { 88 addFieldWatch(vm, refType); 89 } 90 // watch for loaded classes 91 addClassWatch(vm); 92 93 // process events 94 EventQueue eventQueue = vm.eventQueue(); 95 // resume the vm 96 97 Process process = vm.process(); 98 99 100 // Copy target's output and error to our output and error. 101 Thread outThread = new StreamRedirectThread("out reader", process.getInputStream()); 102 Thread errThread = new StreamRedirectThread("error reader", process.getErrorStream()); 103 104 errThread.start(); 105 outThread.start(); 106 107 108 vm.resume(); 109 boolean connected = true; 110 while (connected) { 111 EventSet eventSet = eventQueue.remove(); 112 for (Event event : eventSet) { 113 if (event instanceof VMDeathEvent 114 || event instanceof VMDisconnectEvent) { 115 // exit 116 connected = false; 117 } else if (event instanceof ClassPrepareEvent) { 118 // watch field on loaded class 119 System.out.println("ClassPrepareEvent"); 120 ClassPrepareEvent classPrepEvent = (ClassPrepareEvent) event; 121 ReferenceType refType = classPrepEvent 122 .referenceType(); 123 addFieldWatch(vm, refType); 124 } else if (event instanceof ModificationWatchpointEvent) { 125 System.out.println("sleep for 500 ms"); 126 Thread.sleep(500); 127 System.out.println("resume..."); 128 129 ModificationWatchpointEvent modEvent = (ModificationWatchpointEvent) event; 130 System.out.println("old=" 131 + modEvent.valueCurrent()); 132 System.out.println("new=" + modEvent.valueToBe()); 133 System.out.println(); 134 } 135 } 136 eventSet.resume(); 137 } 138 // Shutdown begins when event thread terminates 139 try { 140 errThread.join(); // Make sure output is forwarded 141 outThread.join(); 142 } catch (InterruptedException exc) { 143 // we don't interrupt 144 } 145 } 146 147 /** 148 * Find a com.sun.jdi.CommandLineLaunch connector 149 */ 150 static LaunchingConnector findLaunchingConnector() { 151 List <Connector> connectors = Bootstrap.virtualMachineManager().allConnectors(); 152 Iterator <Connector> iter = connectors.iterator(); 153 while (iter.hasNext()) { 154 Connector connector = iter.next(); 155 if (connector.name().equals("com.sun.jdi.CommandLineLaunch")) { 156 return (LaunchingConnector)connector; 157 } 158 } 159 throw new Error("No launching connector"); 160 } 161 /** 162 * Return the launching connector's arguments. 163 */ 164 static Map <String,Connector.Argument> connectorArguments(LaunchingConnector connector, String mainArgs) { | 17 * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA. 18 * 19 * Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA 20 * or visit www.oracle.com if you need additional information or have any 21 * questions. 22 */ 23 24 /* 25 * @test FieldMonitor.java 26 * @bug 7158988 27 * @key regression 28 * @summary verify jvm does not crash while debugging 29 * @run compile TestPostFieldModification.java 30 * @run main/othervm FieldMonitor 31 * @author axel.siebenborn@sap.com 32 */ 33 import java.io.BufferedReader; 34 import java.io.IOException; 35 import java.io.InputStream; 36 import java.io.InputStreamReader; 37 import java.util.Iterator; 38 import java.util.List; 39 import java.util.Map; 40 41 import com.sun.jdi.Bootstrap; 42 import com.sun.jdi.Field; 43 import com.sun.jdi.ReferenceType; 44 import com.sun.jdi.VirtualMachine; 45 import com.sun.jdi.connect.Connector; 46 import com.sun.jdi.connect.IllegalConnectorArgumentsException; 47 import com.sun.jdi.connect.LaunchingConnector; 48 import com.sun.jdi.connect.VMStartException; 49 import com.sun.jdi.event.ClassPrepareEvent; 50 import com.sun.jdi.event.Event; 51 import com.sun.jdi.event.EventQueue; 52 import com.sun.jdi.event.EventSet; 53 import com.sun.jdi.event.ModificationWatchpointEvent; 54 import com.sun.jdi.event.VMDeathEvent; 55 import com.sun.jdi.event.VMStartEvent; 56 import com.sun.jdi.event.VMDisconnectEvent; 57 import com.sun.jdi.request.ClassPrepareRequest; 58 import com.sun.jdi.request.EventRequest; 59 import com.sun.jdi.request.EventRequestManager; 60 import com.sun.jdi.request.ModificationWatchpointRequest; 61 62 public class FieldMonitor { 63 64 public static final String CLASS_NAME = "TestPostFieldModification"; 65 public static final String FIELD_NAME = "value"; 66 public static final String ARGUMENTS = "-Xshare:off -XX:+PrintGC"; 67 68 public static void main(String[] args) 69 throws IOException, InterruptedException { 70 71 //VirtualMachine vm = launchTarget(sb.toString()); 72 VirtualMachine vm = launchTarget(CLASS_NAME); 73 74 System.out.println("Vm launched"); 75 76 // process events 77 EventQueue eventQueue = vm.eventQueue(); 78 // resume the vm 79 80 Process process = vm.process(); 81 82 83 // Copy target's output and error to our output and error. 84 Thread outThread = new StreamRedirectThread("out reader", process.getInputStream()); 85 Thread errThread = new StreamRedirectThread("error reader", process.getErrorStream()); 86 87 errThread.start(); 88 outThread.start(); 89 90 boolean connected = true; 91 boolean watched = false; 92 while (connected) { 93 EventSet eventSet = eventQueue.remove(); 94 for (Event event : eventSet) { 95 System.out.println("FieldMonitor-main receives: "+event); 96 if (event instanceof VMStartEvent) { 97 addClassWatch(vm); 98 } else if (event instanceof VMDeathEvent 99 || event instanceof VMDisconnectEvent) { 100 // exit 101 connected = false; 102 } else if (event instanceof ClassPrepareEvent) { 103 // watch field on loaded class 104 System.out.println("ClassPrepareEvent"); 105 ClassPrepareEvent classPrepEvent = (ClassPrepareEvent) event; 106 ReferenceType refType = classPrepEvent 107 .referenceType(); 108 addFieldWatch(vm, refType); 109 } else if (event instanceof ModificationWatchpointEvent) { 110 watched = true; 111 System.out.println("sleep for 500 ms"); 112 Thread.sleep(500); 113 System.out.println("resume..."); 114 115 ModificationWatchpointEvent modEvent = (ModificationWatchpointEvent) event; 116 System.out.println("old=" 117 + modEvent.valueCurrent()); 118 System.out.println("new=" + modEvent.valueToBe()); 119 System.out.println(); 120 } 121 } 122 eventSet.resume(); 123 } 124 // Shutdown begins when event thread terminates 125 try { 126 errThread.join(); // Make sure output is forwarded 127 outThread.join(); 128 } catch (InterruptedException exc) { 129 // we don't interrupt 130 } 131 132 if (!watched) { 133 throw new Error("Did not receive ModificationWatchpointEvent!"); 134 } 135 } 136 137 /** 138 * Find a com.sun.jdi.CommandLineLaunch connector 139 */ 140 static LaunchingConnector findLaunchingConnector() { 141 List <Connector> connectors = Bootstrap.virtualMachineManager().allConnectors(); 142 Iterator <Connector> iter = connectors.iterator(); 143 while (iter.hasNext()) { 144 Connector connector = iter.next(); 145 if (connector.name().equals("com.sun.jdi.CommandLineLaunch")) { 146 return (LaunchingConnector)connector; 147 } 148 } 149 throw new Error("No launching connector"); 150 } 151 /** 152 * Return the launching connector's arguments. 153 */ 154 static Map <String,Connector.Argument> connectorArguments(LaunchingConnector connector, String mainArgs) { |