fixing deadlocks when isUpToDate() is called from Swing thread

java/compiler/impl/src/com/intellij/compiler/progress/CompilerTask.java

@@ -135,6 +135,7 @@ public class CompilerTask extends Task.Backgroundable {
     try {
 
       try {
+        final Application app = ApplicationManager.getApplication();
         while (!acquired) {
           acquired = semaphore.tryAcquire(500, TimeUnit.MILLISECONDS);
           if (indicator.isCanceled()) {
@@ -142,6 +143,9 @@ public class CompilerTask extends Task.Backgroundable {
             // let compile work begin in order to stop gracefuly on cancel event
             break;
           }
+          if (app.isDispatchThread()) {
+            UIUtil.dispatchAllInvocationEvents();
+          }
         }
       }
       catch (InterruptedException ignored) {

platform/util/src/com/intellij/util/ui/UIUtil.java

@@ -1529,7 +1529,6 @@ public class UIUtil {
     g.setComposite(X_RENDER_ACTIVE.getValue() ? AlphaComposite.SrcOver : AlphaComposite.Src);
   }
 
-  @TestOnly
   public static void dispatchAllInvocationEvents() {
     assert SwingUtilities.isEventDispatchThread() : Thread.currentThread();
     final EventQueue eventQueue = Toolkit.getDefaultToolkit().getSystemEventQueue();