*AnimatorImpl: Catch concurrent pulling of GLAutoDrawable instances

It may happen that an GLAutoDrawable is being pulled concurrently from the
animators list, in which case an IndexOutOfBoundsException might be thrown.

Example:
    [junit] *** AWTRobotUtil: UncaughtException (this Thread main-AWTAnimator#00) : Thread <main-AWTAnimator#00>, java.lang.IndexOutOfBoundsException: Index: 1, Size: 1
    [junit] java.lang.IndexOutOfBoundsException: Index: 1, Size: 1
    [junit]     at java.util.ArrayList.rangeCheck(ArrayList.java:653)
    [junit]     at java.util.ArrayList.get(ArrayList.java:429)
    [junit]     at com.jogamp.opengl.util.AWTAnimatorImpl.display(AWTAnimatorImpl.java:68)
    [junit]     at com.jogamp.opengl.util.AnimatorBase.display(AnimatorBase.java:451)
    [junit]     at com.jogamp.opengl.util.Animator$MainLoop.run(Animator.java:198)
    [junit]     at java.lang.Thread.run(Thread.java:745)

1 files changed, 10 insertions, 3 deletions

diff --git a/src/jogl/classes/com/jogamp/opengl/util/DefaultAnimatorImpl.java b/src/jogl/classes/com/jogamp/opengl/util/DefaultAnimatorImpl.java
index 6cded29d9..d8c8465d9 100644
--- a/src/jogl/classes/com/jogamp/opengl/util/DefaultAnimatorImpl.java
+++ b/src/jogl/classes/com/jogamp/opengl/util/DefaultAnimatorImpl.java
@@ -48,12 +48,19 @@ class DefaultAnimatorImpl implements AnimatorBase.AnimatorImpl {
     public void display(final ArrayList<GLAutoDrawable> drawables,
                         final boolean ignoreExceptions,
                         final boolean printExceptions) throws UncaughtAnimatorException {
-        for (int i=0; i<drawables.size(); i++) {
-            final GLAutoDrawable drawable = drawables.get(i);
+        boolean hasException = false;
+        for (int i=0; !hasException && i<drawables.size(); i++) {
+            boolean catch1 = true;
+            GLAutoDrawable drawable = null;
             try {
+                drawable = drawables.get(i);
+                catch1 = false;
                 drawable.display();
             } catch (final Throwable t) {
-                if (ignoreExceptions) {
+                if( catch1 && t instanceof IndexOutOfBoundsException ) {
+                    // concurrent pulling of GLAutoDrawables ..
+                    hasException = true;
+                } else if (ignoreExceptions) {
                     if (printExceptions) {
                         t.printStackTrace();
                     }