private Process launchBuildProcess(Project project, final int port, final UUID sessionId)
      throws ExecutionException {
    // choosing sdk with which the build process should be run
    final Sdk internalJdk = JavaAwareProjectJdkTableImpl.getInstanceEx().getInternalJdk();
    Sdk projectJdk = internalJdk;
    final String versionString = projectJdk.getVersionString();
    JavaSdkVersion sdkVersion =
        versionString != null
            ? ((JavaSdk) projectJdk.getSdkType()).getVersion(versionString)
            : null;
    if (sdkVersion != null) {
      final Set<Sdk> candidates = new HashSet<Sdk>();
      for (Module module : ModuleManager.getInstance(project).getModules()) {
        final Sdk sdk = ModuleRootManager.getInstance(module).getSdk();
        if (sdk != null && sdk.getSdkType() instanceof JavaSdk) {
          candidates.add(sdk);
        }
      }
      // now select the latest version from the sdks that are used in the project, but not older
      // than the internal sdk version
      for (Sdk candidate : candidates) {
        final String vs = candidate.getVersionString();
        if (vs != null) {
          final JavaSdkVersion candidateVersion = ((JavaSdk) candidate.getSdkType()).getVersion(vs);
          if (candidateVersion != null) {
            if (candidateVersion.compareTo(sdkVersion) > 0) {
              sdkVersion = candidateVersion;
              projectJdk = candidate;
            }
          }
        }
      }
    }

    // validate tools.jar presence
    final File compilerPath;
    if (projectJdk.equals(internalJdk)) {
      final JavaCompiler systemCompiler = ToolProvider.getSystemJavaCompiler();
      if (systemCompiler == null) {
        throw new ExecutionException(
            "No system java compiler is provided by the JRE. Make sure tools.jar is present in IntelliJ IDEA classpath.");
      }
      compilerPath = ClasspathBootstrap.getResourcePath(systemCompiler.getClass());
    } else {
      final String path = ((JavaSdk) projectJdk.getSdkType()).getToolsPath(projectJdk);
      if (path == null) {
        throw new ExecutionException(
            "Cannot determine path to 'tools.jar' library for "
                + projectJdk.getName()
                + " ("
                + projectJdk.getHomePath()
                + ")");
      }
      compilerPath = new File(path);
    }

    final GeneralCommandLine cmdLine = new GeneralCommandLine();
    final String vmExecutablePath =
        ((JavaSdkType) projectJdk.getSdkType()).getVMExecutablePath(projectJdk);
    cmdLine.setExePath(vmExecutablePath);
    cmdLine.addParameter("-XX:MaxPermSize=150m");
    cmdLine.addParameter("-XX:ReservedCodeCacheSize=64m");
    final int heapSize = Registry.intValue("compiler.process.heap.size");
    final int xms = heapSize / 2;
    if (xms > 32) {
      cmdLine.addParameter("-Xms" + xms + "m");
    }
    cmdLine.addParameter("-Xmx" + heapSize + "m");

    if (SystemInfo.isMac
        && sdkVersion != null
        && JavaSdkVersion.JDK_1_6.equals(sdkVersion)
        && Registry.is("compiler.process.32bit.vm.on.mac")) {
      // unfortunately -d32 is supported on jdk 1.6 only
      cmdLine.addParameter("-d32");
    }

    cmdLine.addParameter("-Djava.awt.headless=true");

    final String shouldGenerateIndex =
        System.getProperty(GlobalOptions.GENERATE_CLASSPATH_INDEX_OPTION);
    if (shouldGenerateIndex != null) {
      cmdLine.addParameter(
          "-D" + GlobalOptions.GENERATE_CLASSPATH_INDEX_OPTION + "=" + shouldGenerateIndex);
    }

    final String additionalOptions = Registry.stringValue("compiler.process.vm.options");
    if (!StringUtil.isEmpty(additionalOptions)) {
      final StringTokenizer tokenizer = new StringTokenizer(additionalOptions, " ", false);
      while (tokenizer.hasMoreTokens()) {
        cmdLine.addParameter(tokenizer.nextToken());
      }
    }

    // debugging
    final int debugPort = Registry.intValue("compiler.process.debug.port");
    if (debugPort > 0) {
      cmdLine.addParameter("-XX:+HeapDumpOnOutOfMemoryError");
      cmdLine.addParameter(
          "-agentlib:jdwp=transport=dt_socket,server=y,suspend=y,address=" + debugPort);
    }

    if (Registry.is("compiler.process.use.memory.temp.cache")) {
      cmdLine.addParameter("-D" + GlobalOptions.USE_MEMORY_TEMP_CACHE_OPTION);
    }
    if (Registry.is("compiler.process.use.external.javac")) {
      cmdLine.addParameter("-D" + GlobalOptions.USE_EXTERNAL_JAVAC_OPTION);
    }
    final String host = NetUtils.getLocalHostString();
    cmdLine.addParameter("-D" + GlobalOptions.HOSTNAME_OPTION + "=" + host);

    // javac's VM should use the same default locale that IDEA uses in order for javac to print
    // messages in 'correct' language
    final String lang = System.getProperty("user.language");
    if (lang != null) {
      //noinspection HardCodedStringLiteral
      cmdLine.addParameter("-Duser.language=" + lang);
    }
    final String country = System.getProperty("user.country");
    if (country != null) {
      //noinspection HardCodedStringLiteral
      cmdLine.addParameter("-Duser.country=" + country);
    }
    //noinspection HardCodedStringLiteral
    final String region = System.getProperty("user.region");
    if (region != null) {
      //noinspection HardCodedStringLiteral
      cmdLine.addParameter("-Duser.region=" + region);
    }

    cmdLine.addParameter("-classpath");

    final List<File> cp = ClasspathBootstrap.getBuildProcessApplicationClasspath();
    cp.add(compilerPath);
    cp.addAll(myClasspathManager.getCompileServerPluginsClasspath());

    cmdLine.addParameter(classpathToString(cp));

    cmdLine.addParameter(BuildMain.class.getName());
    cmdLine.addParameter(host);
    cmdLine.addParameter(Integer.toString(port));
    cmdLine.addParameter(sessionId.toString());

    final File workDirectory = new File(mySystemDirectory, SYSTEM_ROOT);
    workDirectory.mkdirs();
    ensureLogConfigExists(workDirectory);

    cmdLine.addParameter(FileUtil.toSystemIndependentName(workDirectory.getPath()));

    cmdLine.setWorkDirectory(workDirectory);

    return cmdLine.createProcess();
  }
  @Nullable
  public RequestFuture scheduleBuild(
      final Project project,
      final boolean isRebuild,
      final boolean isMake,
      final Collection<String> modules,
      final Collection<String> artifacts,
      final Collection<String> paths,
      final Map<String, String> userData,
      DefaultMessageHandler handler) {

    final String projectPath = getProjectPath(project);
    final UUID sessionId = UUID.randomUUID();
    final CmdlineRemoteProto.Message.ControllerMessage params;
    CmdlineRemoteProto.Message.ControllerMessage.GlobalSettings globals = myGlobals;
    if (globals == null) {
      globals = buildGlobalSettings();
      myGlobals = globals;
    }

    CmdlineRemoteProto.Message.ControllerMessage.FSEvent currentFSChanges = null;
    final SequentialTaskExecutor projectTaskQueue;
    synchronized (myProjectDataMap) {
      ProjectData data = myProjectDataMap.get(projectPath);
      if (data == null) {
        data = new ProjectData(new SequentialTaskExecutor(myPooledThreadExecutor));
        myProjectDataMap.put(projectPath, data);
      }
      if (isRebuild) {
        data.dropChanges();
      }
      currentFSChanges = data.getAndResetRescanFlag() ? null : data.createNextEvent();
      projectTaskQueue = data.taskQueue;
    }

    if (isRebuild) {
      params = CmdlineProtoUtil.createRebuildRequest(projectPath, userData, globals);
    } else {
      params =
          isMake
              ? CmdlineProtoUtil.createMakeRequest(
                  projectPath, modules, artifacts, userData, globals, currentFSChanges)
              : CmdlineProtoUtil.createForceCompileRequest(
                  projectPath, modules, artifacts, paths, userData, globals, currentFSChanges);
    }

    myMessageDispatcher.registerBuildMessageHandler(sessionId, handler, params);

    // ensure server is listening
    if (myListenPort < 0) {
      try {
        myListenPort = startListening();
      } catch (Exception e) {
        myMessageDispatcher.unregisterBuildMessageHandler(sessionId);
        handler.handleFailure(sessionId, CmdlineProtoUtil.createFailure(e.getMessage(), null));
        handler.sessionTerminated();
        return null;
      }
    }

    final RequestFuture<BuilderMessageHandler> future =
        new RequestFuture<BuilderMessageHandler>(
            handler,
            sessionId,
            new RequestFuture.CancelAction<BuilderMessageHandler>() {
              @Override
              public void cancel(RequestFuture<BuilderMessageHandler> future) throws Exception {
                myMessageDispatcher.cancelSession(future.getRequestID());
              }
            });

    projectTaskQueue.submit(
        new Runnable() {
          @Override
          public void run() {
            try {
              if (project.isDisposed()) {
                future.cancel(false);
                return;
              }
              myBuildsInProgress.put(projectPath, future);
              final Process process = launchBuildProcess(project, myListenPort, sessionId);
              final OSProcessHandler processHandler =
                  new OSProcessHandler(process, null) {
                    @Override
                    protected boolean shouldDestroyProcessRecursively() {
                      return true;
                    }
                  };
              final StringBuilder stdErrOutput = new StringBuilder();
              processHandler.addProcessListener(
                  new ProcessAdapter() {
                    @Override
                    public void processTerminated(ProcessEvent event) {
                      final BuilderMessageHandler handler =
                          myMessageDispatcher.unregisterBuildMessageHandler(sessionId);
                      if (handler != null) {
                        handler.sessionTerminated();
                      }
                    }

                    @Override
                    public void onTextAvailable(ProcessEvent event, Key outputType) {
                      // re-translate builder's output to idea.log
                      final String text = event.getText();
                      if (!StringUtil.isEmpty(text)) {
                        LOG.info("BUILDER_PROCESS [" + outputType.toString() + "]: " + text.trim());
                        if (stdErrOutput.length() < 1024
                            && ProcessOutputTypes.STDERR.equals(outputType)) {
                          stdErrOutput.append(text);
                        }
                      }
                    }
                  });
              processHandler.startNotify();
              final boolean terminated = processHandler.waitFor();
              if (terminated) {
                final int exitValue = processHandler.getProcess().exitValue();
                if (exitValue != 0) {
                  final StringBuilder msg = new StringBuilder();
                  msg.append("Abnormal build process termination: ");
                  if (stdErrOutput.length() > 0) {
                    msg.append("\n").append(stdErrOutput);
                  } else {
                    msg.append("unknown error");
                  }
                  future
                      .getMessageHandler()
                      .handleFailure(
                          sessionId, CmdlineProtoUtil.createFailure(msg.toString(), null));
                }
              } else {
                future
                    .getMessageHandler()
                    .handleFailure(
                        sessionId,
                        CmdlineProtoUtil.createFailure("Disconnected from build process", null));
              }
            } catch (ExecutionException e) {
              myMessageDispatcher.unregisterBuildMessageHandler(sessionId);
              future
                  .getMessageHandler()
                  .handleFailure(sessionId, CmdlineProtoUtil.createFailure(e.getMessage(), e));
              future.getMessageHandler().sessionTerminated();
            } finally {
              myBuildsInProgress.remove(projectPath);
              future.setDone();
            }
          }
        });

    return future;
  }