public void setThread(ThreadReference thread) {
   assertNotResumed();
   ThreadReferenceProxyImpl threadProxy =
       myDebugProcess.getVirtualMachineProxy().getThreadReferenceProxy(thread);
   LOG.assertTrue(myThread == null || myThread == threadProxy);
   myThread = threadProxy;
 }
  /**
   * Associates breakpoint with class. Create requests for loaded class and registers callback for
   * loading classes
   *
   * @param debugProcess the requesting process
   */
  protected void createOrWaitPrepare(DebugProcessImpl debugProcess, String classToBeLoaded) {
    debugProcess.getRequestsManager().callbackOnPrepareClasses(this, classToBeLoaded);

    List list = debugProcess.getVirtualMachineProxy().classesByName(classToBeLoaded);
    for (final Object aList : list) {
      ReferenceType refType = (ReferenceType) aList;
      if (refType.isPrepared()) {
        processClassPrepare(debugProcess, refType);
      }
    }
  }
  public void reloadClasses(final Map<String, HotSwapFile> modifiedClasses) {
    DebuggerManagerThreadImpl.assertIsManagerThread();

    if (modifiedClasses == null || modifiedClasses.size() == 0) {
      myProgress.addMessage(
          myDebuggerSession,
          MessageCategory.INFORMATION,
          DebuggerBundle.message("status.hotswap.loaded.classes.up.to.date"));
      return;
    }

    final DebugProcessImpl debugProcess = getDebugProcess();
    final VirtualMachineProxyImpl virtualMachineProxy = debugProcess.getVirtualMachineProxy();

    final Project project = debugProcess.getProject();
    final BreakpointManager breakpointManager =
        (DebuggerManagerEx.getInstanceEx(project)).getBreakpointManager();
    breakpointManager.disableBreakpoints(debugProcess);

    // virtualMachineProxy.suspend();

    try {
      RedefineProcessor redefineProcessor = new RedefineProcessor(virtualMachineProxy);

      int processedEntriesCount = 0;
      for (final Map.Entry<String, HotSwapFile> entry : modifiedClasses.entrySet()) {
        // stop if process is finished already
        if (debugProcess.isDetached() || debugProcess.isDetaching()) {
          break;
        }
        if (redefineProcessor.getProcessedClassesCount() == 0 && myProgress.isCancelled()) {
          // once at least one class has been actually reloaded, do not interrupt the whole process
          break;
        }
        processedEntriesCount++;
        final String qualifiedName = entry.getKey();
        if (qualifiedName != null) {
          myProgress.setText(qualifiedName);
          myProgress.setFraction(processedEntriesCount / (double) modifiedClasses.size());
        }
        try {
          redefineProcessor.processClass(qualifiedName, entry.getValue().file);
        } catch (IOException e) {
          reportProblem(qualifiedName, e);
        }
      }

      if (redefineProcessor.getProcessedClassesCount() == 0 && myProgress.isCancelled()) {
        // once at least one class has been actually reloaded, do not interrupt the whole process
        return;
      }

      redefineProcessor.processPending();
      myProgress.setFraction(1);

      final int partiallyRedefinedClassesCount =
          redefineProcessor.getPartiallyRedefinedClassesCount();
      if (partiallyRedefinedClassesCount == 0) {
        myProgress.addMessage(
            myDebuggerSession,
            MessageCategory.INFORMATION,
            DebuggerBundle.message(
                "status.classes.reloaded", redefineProcessor.getProcessedClassesCount()));
      } else {
        final String message =
            DebuggerBundle.message(
                "status.classes.not.all.versions.reloaded",
                partiallyRedefinedClassesCount,
                redefineProcessor.getProcessedClassesCount());
        myProgress.addMessage(myDebuggerSession, MessageCategory.WARNING, message);
      }

      LOG.debug("classes reloaded");
    } catch (Throwable e) {
      processException(e);
    }

    debugProcess.getPositionManager().clearCache();

    DebuggerContextImpl context = myDebuggerSession.getContextManager().getContext();
    SuspendContextImpl suspendContext = context.getSuspendContext();
    if (suspendContext != null) {
      XExecutionStack stack = suspendContext.getActiveExecutionStack();
      if (stack != null) {
        ((JavaExecutionStack) stack).initTopFrame();
      }
    }

    final Semaphore waitSemaphore = new Semaphore();
    waitSemaphore.down();
    //noinspection SSBasedInspection
    SwingUtilities.invokeLater(
        () -> {
          try {
            if (!project.isDisposed()) {
              breakpointManager.reloadBreakpoints();
              debugProcess.getRequestsManager().clearWarnings();
              if (LOG.isDebugEnabled()) {
                LOG.debug("requests updated");
                LOG.debug("time stamp set");
              }
              myDebuggerSession.refresh(false);

              XDebugSession session = myDebuggerSession.getXDebugSession();
              if (session != null) {
                session.rebuildViews();
              }
            }
          } catch (Throwable e) {
            LOG.error(e);
          } finally {
            waitSemaphore.up();
          }
        });

    waitSemaphore.waitFor();

    if (!project.isDisposed()) {
      try {
        breakpointManager.enableBreakpoints(debugProcess);
      } catch (Exception e) {
        processException(e);
      }
    }
  }
  // copied from FrameVariablesTree
  private void buildVariables(
      DebuggerContextImpl debuggerContext,
      final EvaluationContextImpl evaluationContext,
      @NotNull DebugProcessImpl debugProcess,
      XValueChildrenList children,
      ObjectReference thisObjectReference,
      Location location)
      throws EvaluateException {
    final Set<String> visibleLocals = new HashSet<String>();
    if (NodeRendererSettings.getInstance().getClassRenderer().SHOW_VAL_FIELDS_AS_LOCAL_VARIABLES) {
      if (thisObjectReference != null
          && debugProcess.getVirtualMachineProxy().canGetSyntheticAttribute()) {
        final ReferenceType thisRefType = thisObjectReference.referenceType();
        if (thisRefType instanceof ClassType
            && location != null
            && thisRefType.equals(location.declaringType())
            && thisRefType.name().contains("$")) { // makes sense for nested classes only
          for (Field field : thisRefType.fields()) {
            if (DebuggerUtils.isSynthetic(field)
                && StringUtil.startsWith(
                    field.name(), FieldDescriptorImpl.OUTER_LOCAL_VAR_FIELD_PREFIX)) {
              final FieldDescriptorImpl fieldDescriptor =
                  myNodeManager.getFieldDescriptor(myDescriptor, thisObjectReference, field);
              children.add(JavaValue.create(fieldDescriptor, evaluationContext, myNodeManager));
              visibleLocals.add(fieldDescriptor.calcValueName());
            }
          }
        }
      }
    }

    boolean myAutoWatchMode = DebuggerSettings.getInstance().AUTO_VARIABLES_MODE;
    if (evaluationContext == null) {
      return;
    }
    final SourcePosition sourcePosition = debuggerContext.getSourcePosition();
    if (sourcePosition == null) {
      return;
    }

    try {
      if (!XDebuggerSettingsManager.getInstance().getDataViewSettings().isAutoExpressions()
          && !myAutoWatchMode) {
        // optimization
        superBuildVariables(evaluationContext, children);
      } else {
        final Map<String, LocalVariableProxyImpl> visibleVariables =
            getVisibleVariables(getStackFrameProxy());
        final Pair<Set<String>, Set<TextWithImports>> usedVars =
            ApplicationManager.getApplication()
                .runReadAction(
                    new Computable<Pair<Set<String>, Set<TextWithImports>>>() {
                      @Override
                      public Pair<Set<String>, Set<TextWithImports>> compute() {
                        return findReferencedVars(
                            ContainerUtil.union(visibleVariables.keySet(), visibleLocals),
                            sourcePosition);
                      }
                    });
        // add locals
        if (myAutoWatchMode) {
          for (String var : usedVars.first) {
            LocalVariableProxyImpl local = visibleVariables.get(var);
            if (local != null) {
              children.add(
                  JavaValue.create(
                      myNodeManager.getLocalVariableDescriptor(null, local),
                      evaluationContext,
                      myNodeManager));
            }
          }
        } else {
          superBuildVariables(evaluationContext, children);
        }
        final EvaluationContextImpl evalContextCopy =
            evaluationContext.createEvaluationContext(evaluationContext.getThisObject());
        evalContextCopy.setAutoLoadClasses(false);

        final Set<TextWithImports> extraVars =
            computeExtraVars(usedVars, sourcePosition, evaluationContext);

        // add extra vars
        addToChildrenFrom(extraVars, children, evaluationContext);

        // add expressions
        addToChildrenFrom(usedVars.second, children, evalContextCopy);
      }
    } catch (EvaluateException e) {
      if (e.getCause() instanceof AbsentInformationException) {
        children.add(
            new DummyMessageValueNode(
                MessageDescriptor.LOCAL_VARIABLES_INFO_UNAVAILABLE.getLabel(),
                XDebuggerUIConstants.INFORMATION_MESSAGE_ICON));
        // trying to collect values from variable slots
        try {
          for (Map.Entry<DecompiledLocalVariable, Value> entry :
              LocalVariablesUtil.fetchValues(getStackFrameProxy(), debugProcess).entrySet()) {
            children.add(
                JavaValue.create(
                    myNodeManager.getArgumentValueDescriptor(
                        null, entry.getKey(), entry.getValue()),
                    evaluationContext,
                    myNodeManager));
          }
        } catch (Exception ex) {
          LOG.info(ex);
        }
      } else {
        throw e;
      }
    }
  }