test/com/sun/jdi/NativeInstanceFilter.java

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  40 
  41 import java.util.*;
  42 import com.sun.jdi.*;
  43 import com.sun.jdi.event.*;
  44 import com.sun.jdi.request.*;
  45 
  46 public class NativeInstanceFilter extends JDIScaffold {
  47 
  48     static int unfilteredEvents = 0;
  49 
  50     public static void main(String args[]) throws Exception {
  51         new NativeInstanceFilter().startTests();
  52     }
  53 
  54     public NativeInstanceFilter() {
  55         super();
  56     }
  57 
  58     static EventRequestManager requestManager = null;
  59     static MethodExitRequest request = null;

  60 
  61     private void listen() {
  62         TargetAdapter adapter = new TargetAdapter() {
  63             EventSet set = null;
  64             ObjectReference instance = null;
  65 
  66             public boolean eventSetReceived(EventSet set) {
  67                 this.set = set;
  68                 return false;
  69             }
  70 
  71             public boolean methodExited(MethodExitEvent event) {
  72                 String name = event.method().name();
  73                 if (instance == null && name.equals("latch")) {
  74                     // Grab the instance (return value) and set up as filter
  75                     System.out.println("Setting up instance filter");
  76                     instance = (ObjectReference)event.returnValue();
  77                     requestManager.deleteEventRequest(request);
  78                     request = requestManager.createMethodExitRequest();
  79                     request.addInstanceFilter(instance);

  80                     request.enable();
  81                 } else if (instance != null && name.equals("intern")) {
  82                     // If not for the filter, this will be called twice
  83                     System.out.println("method exit event (String.intern())");
  84                     ++unfilteredEvents;
  85                 }
  86                 set.resume();
  87                 return false;
  88             }
  89         };
  90         addListener(adapter);
  91     }
  92 
  93 
  94     protected void runTests() throws Exception {
  95         String[] args = new String[2];
  96         args[0] = "-connect";
  97         args[1] = "com.sun.jdi.CommandLineLaunch:main=NativeInstanceFilterTarg";
  98 
  99         connect(args);
 100         waitForVMStart();
 101 
 102         // VM has started, but hasn't started running the test program yet.
 103         requestManager = vm().eventRequestManager();
 104         ReferenceType referenceType =
 105             resumeToPrepareOf("NativeInstanceFilterTarg").referenceType();

 106 
 107         request = requestManager.createMethodExitRequest();

 108         request.enable();
 109 
 110         listen();
 111 
 112         vm().resume();
 113 
 114         waitForVMDeath();
 115 
 116         if (unfilteredEvents != 1) {
 117             throw new Exception(
 118                 "Failed: Event from native frame not filtered out.");
 119         }
 120         System.out.println("Passed: Event filtered out.");
 121     }
 122 }


  40 
  41 import java.util.*;
  42 import com.sun.jdi.*;
  43 import com.sun.jdi.event.*;
  44 import com.sun.jdi.request.*;
  45 
  46 public class NativeInstanceFilter extends JDIScaffold {
  47 
  48     static int unfilteredEvents = 0;
  49 
  50     public static void main(String args[]) throws Exception {
  51         new NativeInstanceFilter().startTests();
  52     }
  53 
  54     public NativeInstanceFilter() {
  55         super();
  56     }
  57 
  58     static EventRequestManager requestManager = null;
  59     static MethodExitRequest request = null;
  60     static ThreadReference mainThread = null;
  61 
  62     private void listen() {
  63         TargetAdapter adapter = new TargetAdapter() {
  64             EventSet set = null;
  65             ObjectReference instance = null;
  66 
  67             public boolean eventSetReceived(EventSet set) {
  68                 this.set = set;
  69                 return false;
  70             }
  71 
  72             public boolean methodExited(MethodExitEvent event) {
  73                 String name = event.method().name();
  74                 if (instance == null && name.equals("latch")) {
  75                     // Grab the instance (return value) and set up as filter
  76                     System.out.println("Setting up instance filter");
  77                     instance = (ObjectReference)event.returnValue();
  78                     requestManager.deleteEventRequest(request);
  79                     request = requestManager.createMethodExitRequest();
  80                     request.addInstanceFilter(instance);
  81                     request.addThreadFilter(mainThread);
  82                     request.enable();
  83                 } else if (instance != null && name.equals("intern")) {
  84                     // If not for the filter, this will be called twice
  85                     System.out.println("method exit event (String.intern())");
  86                     ++unfilteredEvents;
  87                 }
  88                 set.resume();
  89                 return false;
  90             }
  91         };
  92         addListener(adapter);
  93     }
  94 
  95 
  96     protected void runTests() throws Exception {
  97         String[] args = new String[2];
  98         args[0] = "-connect";
  99         args[1] = "com.sun.jdi.CommandLineLaunch:main=NativeInstanceFilterTarg";
 100 
 101         connect(args);
 102         waitForVMStart();
 103 
 104         // VM has started, but hasn't started running the test program yet.
 105         requestManager = vm().eventRequestManager();
 106         ClassPrepareEvent e = resumeToPrepareOf("NativeInstanceFilterTarg");
 107         ReferenceType referenceType = e.referenceType();
 108         mainThread = e.thread();
 109 
 110         request = requestManager.createMethodExitRequest();
 111         request.addThreadFilter(mainThread);
 112         request.enable();
 113 
 114         listen();
 115 
 116         vm().resume();
 117 
 118         waitForVMDeath();
 119 
 120         if (unfilteredEvents != 1) {
 121             throw new Exception(
 122                 "Failed: Event from native frame not filtered out.");
 123         }
 124         System.out.println("Passed: Event filtered out.");
 125     }
 126 }