Ejemplo n.º 1
0
  public void exceptionEvent(ExceptionEvent event) {
    ObjectReference or = event.exception();
    ReferenceType rt = or.referenceType();
    String exceptionName = rt.name();
    // Field messageField = Throwable.class.getField("detailMessage");
    Field messageField = rt.fieldByName("detailMessage");
    //    System.out.println("field " + messageField);
    Value messageValue = or.getValue(messageField);
    //    System.out.println("mess val " + messageValue);

    // "java.lang.ArrayIndexOutOfBoundsException"
    int last = exceptionName.lastIndexOf('.');
    String message = exceptionName.substring(last + 1);
    if (messageValue != null) {
      String messageStr = messageValue.toString();
      if (messageStr.startsWith("\"")) {
        messageStr = messageStr.substring(1, messageStr.length() - 1);
      }
      message += ": " + messageStr;
    }
    //    System.out.println("mess type " + messageValue.type());
    // StringReference messageReference = (StringReference) messageValue.type();

    // First just report the exception and its placement
    reportException(message, or, event.thread());
    // Then try to pretty it up with a better message
    handleCommonErrors(exceptionName, message, listener);

    if (editor != null) {
      editor.deactivateRun();
    }
  }
Ejemplo n.º 2
0
  /**
   * Generate the trace. Enable events, start thread to display events, start threads to forward
   * remote error and output streams, resume the remote VM, wait for the final event, and shutdown.
   */
  protected void generateTrace() {
    // vm.setDebugTraceMode(debugTraceMode);
    //    vm.setDebugTraceMode(VirtualMachine.TRACE_ALL);
    //    vm.setDebugTraceMode(VirtualMachine.TRACE_NONE);  // formerly, seems to have no effect

    // For internal debugging
    PrintWriter writer = null;

    // Calling this seems to set something internally to make the
    // Eclipse JDI wake up. Without it, an ObjectCollectedException
    // is thrown on excReq.enable(). No idea why this works,
    // but at least exception handling has returned. (Suspect that it may
    // block until all or at least some threads are available, meaning
    // that the app has launched and we have legit objects to talk to).
    vm.allThreads();
    // The bug may not have been noticed because the test suite waits for
    // a thread to be available, and queries it by calling allThreads().
    // See org.eclipse.debug.jdi.tests.AbstractJDITest for the example.

    EventRequestManager mgr = vm.eventRequestManager();
    // get only the uncaught exceptions
    ExceptionRequest excReq = mgr.createExceptionRequest(null, false, true);
    //    System.out.println(excReq);
    // this version reports all exceptions, caught or uncaught
    //  ExceptionRequest excReq = mgr.createExceptionRequest(null, true, true);
    // suspend so we can step
    excReq.setSuspendPolicy(EventRequest.SUSPEND_ALL);
    //    excReq.setSuspendPolicy(EventRequest.SUSPEND_EVENT_THREAD);
    //    excReq.setSuspendPolicy(EventRequest.SUSPEND_NONE);  // another option?
    excReq.enable();

    Thread eventThread =
        new Thread() {
          public void run() {
            try {
              boolean connected = true;
              while (connected) {
                EventQueue eventQueue = vm.eventQueue();
                // remove() blocks until event(s) available
                EventSet eventSet = eventQueue.remove();
                //            listener.vmEvent(eventSet);

                for (Event event : eventSet) {
                  //              System.out.println("EventThread.handleEvent -> " + event);
                  if (event instanceof VMStartEvent) {
                    vm.resume();
                  } else if (event instanceof ExceptionEvent) {
                    //                for (ThreadReference thread : vm.allThreads()) {
                    //                  System.out.println("thread : " + thread);
                    ////                  thread.suspend();
                    //                }
                    exceptionEvent((ExceptionEvent) event);
                  } else if (event instanceof VMDisconnectEvent) {
                    connected = false;
                  }
                }
              }
              //        } catch (VMDisconnectedException e) {
              //          Logger.getLogger(VMEventReader.class.getName()).log(Level.INFO,
              // "VMEventReader quit on VM disconnect");
            } catch (Exception e) {
              System.err.println("crashed in event thread due to " + e.getMessage());
              //          Logger.getLogger(VMEventReader.class.getName()).log(Level.SEVERE,
              // "VMEventReader quit", e);
              e.printStackTrace();
            }
          }
        };
    eventThread.start();

    errThread = new MessageSiphon(process.getErrorStream(), this).getThread();

    outThread = new StreamRedirectThread("JVM stdout Reader", process.getInputStream(), System.out);
    errThread.start();
    outThread.start();

    // Shutdown begins when event thread terminates
    try {
      if (eventThread != null) eventThread.join(); // is this the problem?

      //      System.out.println("in here");
      // Bug #852 tracked to this next line in the code.
      // http://dev.processing.org/bugs/show_bug.cgi?id=852
      errThread.join(); // Make sure output is forwarded
      //      System.out.println("and then");
      outThread.join(); // before we exit
      //      System.out.println("finished join for errThread and outThread");

      // At this point, disable the run button.
      // This happens when the sketch is exited by hitting ESC,
      // or the user manually closes the sketch window.
      // TODO this should be handled better, should it not?
      if (editor != null) {
        editor.deactivateRun();
      }
    } catch (InterruptedException exc) {
      // we don't interrupt
    }
    // System.out.println("and leaving");
    if (writer != null) writer.close();
  }