2 files changed, 34 insertions, 3 deletions
diff --git a/src/newt/classes/com/jogamp/newt/opengl/GLWindow.java b/src/newt/classes/com/jogamp/newt/opengl/GLWindow.java
index 345d92bc1..25249cee4 100644
--- a/src/newt/classes/com/jogamp/newt/opengl/GLWindow.java
+++ b/src/newt/classes/com/jogamp/newt/opengl/GLWindow.java
@@ -34,6 +34,8 @@
 
 package com.jogamp.newt.opengl;
 
+import java.security.AccessController;
+import java.security.PrivilegedAction;
 import java.util.List;
 
 import javax.media.nativewindow.AbstractGraphicsConfiguration;
@@ -529,6 +531,24 @@ public class GLWindow extends GLAutoDrawableBase implements GLAutoDrawable, Wind
                 savedAnimator.resume();
             }
         }
+        
+        @SuppressWarnings("deprecation")
+        @Override
+        public void shutdownRenderingAction() {
+            final GLAnimatorControl anim = GLWindow.this.getAnimator();
+            if ( null != anim && anim.isAnimating() ) {
+                AccessController.doPrivileged(new PrivilegedAction<Object>() {
+                    public Object run() {
+                        final Thread animThread = anim.getThread();
+                        if( null != animThread ) {
+                            try {
+                                animThread.stop();
+                            } catch(Throwable t) { }
+                        }
+                        return null;
+                    } } );
+            }
+        }
     }
 
     //----------------------------------------------------------------------
diff --git a/src/newt/classes/jogamp/newt/WindowImpl.java b/src/newt/classes/jogamp/newt/WindowImpl.java
index 6787f0ab3..77ff21061 100644
--- a/src/newt/classes/jogamp/newt/WindowImpl.java
+++ b/src/newt/classes/jogamp/newt/WindowImpl.java
@@ -88,7 +88,7 @@ public abstract class WindowImpl implements Window, NEWTEventConsumer
         ScreenImpl.initSingleton();
     }
         
-    /** Maybe utilized at a shutdown hook, impl. does not synchronize, however the Window destruction and EDT removal blocks. */
+    /** Maybe utilized at a shutdown hook, impl. does not block. */
     public static final void shutdownAll() {
         final int wCount = windowList.size(); 
         if(DEBUG_IMPLEMENTATION) {
@@ -99,7 +99,7 @@ public abstract class WindowImpl implements Window, NEWTEventConsumer
             if(DEBUG_IMPLEMENTATION) {
                 System.err.println("Window.shutdownAll["+(i+1)+"/"+wCount+"]: "+toHexString(w.getWindowHandle()));
             }
-            w.markInvalid();
+            w.shutdown();
         }
     }
     
@@ -242,7 +242,10 @@ public abstract class WindowImpl implements Window, NEWTEventConsumer
     }
 
     /** Fast invalidation of instance w/o any blocking function call. */
-    private final void markInvalid() {
+    private final void shutdown() {
+        if(null!=lifecycleHook) {
+            lifecycleHook.shutdownRenderingAction();
+        }
         setWindowHandle(0);
         visible = false;
         fullscreen = false;
@@ -310,6 +313,14 @@ public abstract class WindowImpl implements Window, NEWTEventConsumer
          * @see #pauseRenderingAction()
          */
         void resumeRenderingAction();
+        
+        /**
+         * Shutdown rendering action (thread) abnormally.
+         * <p>
+         * Should be called only at shutdown, if necessary.
+         * </p> 
+         */
+        void shutdownRenderingAction();
     }
 
     private boolean createNative() {