'ApplicationListener.afterWriteActionFinished' to get notifications when all writes actions finished and write lock is released

CPP-7082 Cannot initiate symbols rebuild from writeAction in tests
CPP-7020 "Access is allowed from event dispatch thread only" after reload Cmake Project (master)

platform/core-api/src/com/intellij/openapi/application/ApplicationAdapter.java

@@ -38,4 +38,7 @@ public abstract class ApplicationAdapter implements ApplicationListener {
   @Override
   public void writeActionFinished(@NotNull Object action) {
   }
+
+  public void afterWriteActionFinished(@NotNull Object action) {
+  }
 }

platform/core-api/src/com/intellij/openapi/application/ApplicationListener.java

@@ -45,7 +45,12 @@ public interface ApplicationListener extends EventListener {
   void writeActionStarted(@NotNull Object action);
 
   /**
-   *  Is called on action finish.
+   *  Is called on before action finish, while while lock is still being hold 
    */
   void writeActionFinished(@NotNull Object action);
+
+  /**
+   *  Is called after action finish and lock is released
+   */
+  void afterWriteActionFinished(@NotNull Object action);
 }

platform/platform-impl/src/com/intellij/openapi/application/impl/ApplicationImpl.java

@@ -1122,6 +1122,7 @@ public class ApplicationImpl extends PlatformComponentManagerImpl implements App
       }
       if (myWriteActionsStack.isEmpty()) {
         myLock.writeUnlock();
+        fireAfterWriteActionFinished(clazz);
       }
     }
   }
@@ -1263,6 +1264,10 @@ public class ApplicationImpl extends PlatformComponentManagerImpl implements App
     myDispatcher.getMulticaster().writeActionFinished(action);
   }
 
+  private void fireAfterWriteActionFinished(@NotNull Class action) {
+    myDispatcher.getMulticaster().afterWriteActionFinished(action);
+  }
+
   @Override
   public void saveSettings() {
     if (myDoNotSave) return;