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 | 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 import java.io.PrintWriter; 41 42 import com.sun.jdi.Bootstrap; 43 import com.sun.jdi.Field; 44 import com.sun.jdi.ReferenceType; 45 import com.sun.jdi.VirtualMachine; 46 import com.sun.jdi.connect.Connector; 47 import com.sun.jdi.connect.IllegalConnectorArgumentsException; 48 import com.sun.jdi.connect.LaunchingConnector; 49 import com.sun.jdi.connect.VMStartException; 50 import com.sun.jdi.event.ClassPrepareEvent; 51 import com.sun.jdi.event.VMStartEvent; 52 import com.sun.jdi.event.Event; 53 import com.sun.jdi.event.EventQueue; 54 import com.sun.jdi.event.EventSet; 55 import com.sun.jdi.event.ModificationWatchpointEvent; 56 import com.sun.jdi.event.VMDeathEvent; 57 import com.sun.jdi.event.VMDisconnectEvent; 58 import com.sun.jdi.request.ClassPrepareRequest; 59 import com.sun.jdi.request.EventRequest; 60 import com.sun.jdi.request.EventRequestManager; 61 import com.sun.jdi.request.ModificationWatchpointRequest; 62 63 public class FieldMonitor { 64 65 public static final String CLASS_NAME = "TestPostFieldModification"; 66 public static final String FIELD_NAME = "value"; 67 public static final String ARGUMENTS = "-Xshare:off -XX:+PrintGC"; 68 69 public static void main(String[] args) 70 throws IOException, InterruptedException { 71 72 VirtualMachine vm = launchTarget(CLASS_NAME); 73 EventQueue eventQueue = vm.eventQueue(); 74 75 // make sure the vm is started 76 boolean started = false; 77 while(!started) { 78 EventSet eventSet = eventQueue.remove(); 79 for (Event event : eventSet) { 80 if (event instanceof VMStartEvent) { 81 started = true; 82 } 83 if (event instanceof VMDeathEvent 84 || event instanceof VMDisconnectEvent) { 85 throw new Error("VM died before it started...:"+event); 86 } 87 } 88 } 89 90 System.out.println("Vm launched"); 91 92 // watch for loaded classes 93 addClassWatch(vm); 94 95 // process events 96 Process process = vm.process(); 97 98 99 // Copy target's output and error to our output and error. 100 Thread outThread = new StreamRedirectThread("out reader", process.getInputStream()); 101 Thread errThread = new StreamRedirectThread("error reader", process.getErrorStream()); 102 103 PrintWriter vmPrinter = null; 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); 124 125 // inform TestPostFieldModification that it can exit. // JDK-8007710 126 if (vmPrinter == null) { 127 vmPrinter = new PrintWriter(process.getOutputStream()); 128 vmPrinter.println(""); 129 vmPrinter.flush(); 130 } 131 } else if (event instanceof ModificationWatchpointEvent) { 132 System.out.println("sleep for 500 ms"); 133 Thread.sleep(500); 134 System.out.println("resume..."); 135 136 ModificationWatchpointEvent modEvent = (ModificationWatchpointEvent) event; 137 System.out.println("old=" 138 + modEvent.valueCurrent()); 139 System.out.println("new=" + modEvent.valueToBe()); 140 System.out.println(); 141 } 142 } 143 eventSet.resume(); 144 } 145 // Shutdown begins when event thread terminates 146 try { 147 errThread.join(); // Make sure output is forwarded 148 outThread.join(); 149 } catch (InterruptedException exc) { 150 // we don't interrupt |