Merge branch 'master' of github.com:sgothel/jogl

19 files changed, 267 insertions, 763 deletions

diff --git a/src/nativewindow/classes/com/jogamp/nativewindow/impl/InternalBufferUtil.java b/src/nativewindow/classes/com/jogamp/nativewindow/impl/InternalBufferUtil.java
deleted file mode 100644
index f590e9b8b..000000000
--- a/src/nativewindow/classes/com/jogamp/nativewindow/impl/InternalBufferUtil.java
+++ /dev/null
@@ -1,124 +0,0 @@
-/*
- * Copyright (c) 2009 Sun Microsystems, Inc. All Rights Reserved.
- * 
- * Redistribution and use in source and binary forms, with or without
- * modification, are permitted provided that the following conditions are
- * met:
- * 
- * - Redistribution of source code must retain the above copyright
- *   notice, this list of conditions and the following disclaimer.
- * 
- * - Redistribution in binary form must reproduce the above copyright
- *   notice, this list of conditions and the following disclaimer in the
- *   documentation and/or other materials provided with the distribution.
- * 
- * Neither the name of Sun Microsystems, Inc. or the names of
- * contributors may be used to endorse or promote products derived from
- * this software without specific prior written permission.
- * 
- * This software is provided "AS IS," without a warranty of any kind. ALL
- * EXPRESS OR IMPLIED CONDITIONS, REPRESENTATIONS AND WARRANTIES,
- * INCLUDING ANY IMPLIED WARRANTY OF MERCHANTABILITY, FITNESS FOR A
- * PARTICULAR PURPOSE OR NON-INFRINGEMENT, ARE HEREBY EXCLUDED. SUN
- * MICROSYSTEMS, INC. ("SUN") AND ITS LICENSORS SHALL NOT BE LIABLE FOR
- * ANY DAMAGES SUFFERED BY LICENSEE AS A RESULT OF USING, MODIFYING OR
- * DISTRIBUTING THIS SOFTWARE OR ITS DERIVATIVES. IN NO EVENT WILL SUN OR
- * ITS LICENSORS BE LIABLE FOR ANY LOST REVENUE, PROFIT OR DATA, OR FOR
- * DIRECT, INDIRECT, SPECIAL, CONSEQUENTIAL, INCIDENTAL OR PUNITIVE
- * DAMAGES, HOWEVER CAUSED AND REGARDLESS OF THE THEORY OF LIABILITY,
- * ARISING OUT OF THE USE OF OR INABILITY TO USE THIS SOFTWARE, EVEN IF
- * SUN HAS BEEN ADVISED OF THE POSSIBILITY OF SUCH DAMAGES.
- * 
- */
-
-package com.jogamp.nativewindow.impl;
-
-import java.lang.reflect.*;
-import java.nio.*;
-
-/** Internal copy of selected routines from BufferUtil to avoid
-    outward dependencies on com.jogamp.opengl.util package. */
-public class InternalBufferUtil {
-    public static final int SIZEOF_BYTE = 1;
-    public static final int SIZEOF_SHORT = 2;
-    public static final int SIZEOF_INT = 4;
-    public static final int SIZEOF_FLOAT = 4;
-
-    //----------------------------------------------------------------------
-    // Allocation routines
-    //
-
-    /** Allocates a new direct ByteBuffer with the specified number of
-        elements. The returned buffer will have its byte order set to
-        the host platform's native byte order. */
-    public static ByteBuffer newByteBuffer(int numElements) {
-        ByteBuffer bb = ByteBuffer.allocateDirect(numElements);
-        nativeOrder(bb);
-        return bb;
-    }
-    
-    /** Allocates a new direct IntBuffer with the specified number of
-        elements. The returned buffer will have its byte order set to
-        the host platform's native byte order. */
-    public static IntBuffer newIntBuffer(int numElements) {
-        ByteBuffer bb = newByteBuffer(numElements * SIZEOF_INT);
-        return bb.asIntBuffer();
-    }
-    
-    //----------------------------------------------------------------------
-    // Copy routines (type-to-type)
-    //
-
-    /** Copies the <i>remaining</i> elements (as defined by
-        <code>limit() - position()</code>) in the passed ByteBuffer into
-        a newly-allocated direct ByteBuffer. The returned buffer will
-        have its byte order set to the host platform's native byte
-        order. The position of the newly-allocated buffer will be zero,
-        and the position of the passed buffer is unchanged (though its
-        mark is changed). */
-    public static ByteBuffer copyByteBuffer(ByteBuffer orig) {
-        ByteBuffer dest = newByteBuffer(orig.remaining());
-        dest.put(orig);
-        dest.rewind();
-        return dest;
-    }
-
-    //----------------------------------------------------------------------
-    // Conversion routines 
-    //
-
-    public static ByteBuffer nativeOrder(ByteBuffer buf) {
-        if (!isCDCFP) {
-            try {
-                if (byteOrderClass == null) {
-                    byteOrderClass = Class.forName("java.nio.ByteOrder");
-                    orderMethod = ByteBuffer.class.getMethod("order", new Class[] { byteOrderClass });
-                    Method nativeOrderMethod = byteOrderClass.getMethod("nativeOrder", null);
-                    nativeOrderObject = nativeOrderMethod.invoke(null, null);
-                }
-            } catch (Throwable t) {
-                // Must be running on CDC / FP
-                isCDCFP = true;
-            }
-
-            if (!isCDCFP) {
-                try {
-                    orderMethod.invoke(buf, new Object[] { nativeOrderObject });
-                } catch (Throwable t) {
-                }
-            }
-        }
-        return buf;
-    }
-
-    //----------------------------------------------------------------------
-    // Internals only below this point
-    //
-
-    // NOTE that this work must be done reflectively at the present time
-    // because this code must compile and run correctly on both CDC/FP and J2SE
-    private static boolean isCDCFP;
-    private static Class byteOrderClass;
-    private static Object nativeOrderObject;
-    private static Method orderMethod;
-}
diff --git a/src/nativewindow/classes/com/jogamp/nativewindow/impl/LockingNativeWindowFactory.java b/src/nativewindow/classes/com/jogamp/nativewindow/impl/LockingNativeWindowFactory.java
deleted file mode 100644
index 203ae3d12..000000000
--- a/src/nativewindow/classes/com/jogamp/nativewindow/impl/LockingNativeWindowFactory.java
+++ /dev/null
@@ -1,43 +0,0 @@
-/*
- * Copyright (c) 2009 Sun Microsystems, Inc. All Rights Reserved.
- * 
- * Redistribution and use in source and binary forms, with or without
- * modification, are permitted provided that the following conditions are
- * met:
- * 
- * - Redistribution of source code must retain the above copyright
- *   notice, this list of conditions and the following disclaimer.
- * 
- * - Redistribution in binary form must reproduce the above copyright
- *   notice, this list of conditions and the following disclaimer in the
- *   documentation and/or other materials provided with the distribution.
- * 
- * Neither the name of Sun Microsystems, Inc. or the names of
- * contributors may be used to endorse or promote products derived from
- * this software without specific prior written permission.
- * 
- * This software is provided "AS IS," without a warranty of any kind. ALL
- * EXPRESS OR IMPLIED CONDITIONS, REPRESENTATIONS AND WARRANTIES,
- * INCLUDING ANY IMPLIED WARRANTY OF MERCHANTABILITY, FITNESS FOR A
- * PARTICULAR PURPOSE OR NON-INFRINGEMENT, ARE HEREBY EXCLUDED. SUN
- * MICROSYSTEMS, INC. ("SUN") AND ITS LICENSORS SHALL NOT BE LIABLE FOR
- * ANY DAMAGES SUFFERED BY LICENSEE AS A RESULT OF USING, MODIFYING OR
- * DISTRIBUTING THIS SOFTWARE OR ITS DERIVATIVES. IN NO EVENT WILL SUN OR
- * ITS LICENSORS BE LIABLE FOR ANY LOST REVENUE, PROFIT OR DATA, OR FOR
- * DIRECT, INDIRECT, SPECIAL, CONSEQUENTIAL, INCIDENTAL OR PUNITIVE
- * DAMAGES, HOWEVER CAUSED AND REGARDLESS OF THE THEORY OF LIABILITY,
- * ARISING OUT OF THE USE OF OR INABILITY TO USE THIS SOFTWARE, EVEN IF
- * SUN HAS BEEN ADVISED OF THE POSSIBILITY OF SUCH DAMAGES.
- */
-
-package com.jogamp.nativewindow.impl;
-
-import javax.media.nativewindow.*;
-
-public class LockingNativeWindowFactory extends NativeWindowFactoryImpl {
-    private ToolkitLock toolkitLock = new RecursiveToolkitLock();
-
-    public ToolkitLock getToolkitLock() {
-        return toolkitLock;
-    }
-}
diff --git a/src/nativewindow/classes/com/jogamp/nativewindow/impl/NativeWindowFactoryImpl.java b/src/nativewindow/classes/com/jogamp/nativewindow/impl/NativeWindowFactoryImpl.java
index 6233bf533..8cf02965b 100644
--- a/src/nativewindow/classes/com/jogamp/nativewindow/impl/NativeWindowFactoryImpl.java
+++ b/src/nativewindow/classes/com/jogamp/nativewindow/impl/NativeWindowFactoryImpl.java
@@ -99,17 +99,4 @@ public class NativeWindowFactoryImpl extends NativeWindowFactory {
             throw (IllegalArgumentException) new IllegalArgumentException().initCause(ie);
         }
     }
-
-    // On most platforms the toolkit lock is a no-op
-    private ToolkitLock toolkitLock = new ToolkitLock() {
-            public void lock() {
-            }
-
-            public void unlock() {
-            }
-        };
-
-    public ToolkitLock getToolkitLock() {
-        return toolkitLock;
-    }
 }
diff --git a/src/nativewindow/classes/com/jogamp/nativewindow/impl/NullWindow.java b/src/nativewindow/classes/com/jogamp/nativewindow/impl/NullWindow.java
index a1c2b594c..7c446addc 100644
--- a/src/nativewindow/classes/com/jogamp/nativewindow/impl/NullWindow.java
+++ b/src/nativewindow/classes/com/jogamp/nativewindow/impl/NullWindow.java
@@ -37,9 +37,10 @@
 package com.jogamp.nativewindow.impl;
 
 import javax.media.nativewindow.*;
+import com.jogamp.nativewindow.impl.RecursiveToolkitLock;
 
 public class NullWindow implements NativeWindow, SurfaceChangeable {
-  private Exception lockedStack = null;
+  private RecursiveToolkitLock recurLock = new RecursiveToolkitLock();
   protected int width, height, scrnIndex;
   protected long surfaceHandle, displayHandle;
   protected AbstractGraphicsConfiguration config;
@@ -68,28 +69,20 @@ public class NullWindow implements NativeWindow, SurfaceChangeable {
   }
 
   public synchronized int lockSurface() throws NativeWindowException {
-    if (null!=lockedStack) {
-      lockedStack.printStackTrace();
-      throw new NativeWindowException("Surface already locked - "+this);
-    }
-    lockedStack = new Exception("NullWindow previously locked by "+Thread.currentThread().getName());
+    recurLock.lock();
     return LOCK_SUCCESS;
   }
 
   public synchronized void unlockSurface() {
-    if (null!=lockedStack) {
-        lockedStack = null;
-    } else {
-        throw new NativeWindowException("NullWindow not locked");
-    }
+    recurLock.unlock();
   }
 
   public synchronized boolean isSurfaceLocked() {
-    return null!=lockedStack;
+    return recurLock.isLocked();
   }
 
   public Exception getLockedStack() {
-    return lockedStack;
+    return recurLock.getLockedStack();
   }
 
   public boolean surfaceSwap() {
diff --git a/src/nativewindow/classes/com/jogamp/nativewindow/impl/RecursiveToolkitLock.java b/src/nativewindow/classes/com/jogamp/nativewindow/impl/RecursiveToolkitLock.java
index 52c211615..236ef0754 100644
--- a/src/nativewindow/classes/com/jogamp/nativewindow/impl/RecursiveToolkitLock.java
+++ b/src/nativewindow/classes/com/jogamp/nativewindow/impl/RecursiveToolkitLock.java
@@ -5,11 +5,12 @@ import javax.media.nativewindow.*;
 //
 // Reentrance locking toolkit
 // 
-public class RecursiveToolkitLock implements ToolkitLock {
+public class RecursiveToolkitLock {
     private Thread owner = null;
     private int recursionCount = 0;
     private Exception lockedStack = null;
     private static final long timeout = 3000;  // maximum wait 3s
+    private static final boolean TRACE_LOCK = false;
 
     public Exception getLockedStack() {
         return lockedStack;
@@ -35,11 +36,27 @@ public class RecursiveToolkitLock implements ToolkitLock {
         return recursionCount;
     }
 
+    public synchronized void validateLocked() {
+        if ( !isLocked() ) {
+            throw new RuntimeException(Thread.currentThread()+": Not locked");
+        }
+        if ( !isOwner() ) {
+            getLockedStack().printStackTrace();
+            throw new RuntimeException(Thread.currentThread()+": Not owner, owner is "+owner);
+        }
+    }
+
     /** Recursive and blocking lockSurface() implementation */
     public synchronized void lock() {
         Thread cur = Thread.currentThread();
+        if(TRACE_LOCK) {
+            System.out.println("... LOCK 0 ["+this+"], recursions "+recursionCount+", "+cur);
+        }
         if (owner == cur) {
             ++recursionCount;
+            if(TRACE_LOCK) {
+                System.out.println("+++ LOCK 1 ["+this+"], recursions "+recursionCount+", "+cur);
+            }
             return;
         }
 
@@ -55,6 +72,9 @@ public class RecursiveToolkitLock implements ToolkitLock {
             lockedStack.printStackTrace();
             throw new RuntimeException("Waited "+timeout+"ms for: "+owner+" - "+cur+", with recursionCount "+recursionCount+", lock: "+this);
         }
+        if(TRACE_LOCK) {
+            System.out.println("+++ LOCK X ["+this+"], recursions "+recursionCount+", "+cur);
+        }
         owner = cur;
         lockedStack = new Exception("Previously locked by "+owner+", lock: "+this);
     }
@@ -67,13 +87,13 @@ public class RecursiveToolkitLock implements ToolkitLock {
 
     /** Recursive and unblocking unlockSurface() implementation */
     public synchronized void unlock(Runnable taskAfterUnlockBeforeNotify) {
-        Thread cur = Thread.currentThread();
-        if (owner != cur) {
-            lockedStack.printStackTrace();
-            throw new RuntimeException(cur+": Not owner, owner is "+owner);
-        }
+        validateLocked();
+
         if (recursionCount > 0) {
             --recursionCount;
+            if(TRACE_LOCK) {
+                System.out.println("--- LOCK 1 ["+this+"], recursions "+recursionCount+", "+Thread.currentThread());
+            }
             return;
         }
         owner = null;
@@ -81,6 +101,9 @@ public class RecursiveToolkitLock implements ToolkitLock {
         if(null!=taskAfterUnlockBeforeNotify) {
             taskAfterUnlockBeforeNotify.run();
         }
+        if(TRACE_LOCK) {
+            System.out.println("--- LOCK X ["+this+"], recursions "+recursionCount+", "+Thread.currentThread());
+        }
         notifyAll();
     }
 }
diff --git a/src/nativewindow/classes/com/jogamp/nativewindow/impl/jawt/JAWTUtil.java b/src/nativewindow/classes/com/jogamp/nativewindow/impl/jawt/JAWTUtil.java
index 527d7750d..d7c690fc6 100644
--- a/src/nativewindow/classes/com/jogamp/nativewindow/impl/jawt/JAWTUtil.java
+++ b/src/nativewindow/classes/com/jogamp/nativewindow/impl/jawt/JAWTUtil.java
@@ -64,7 +64,6 @@ public class JAWTUtil {
     JAWTJNILibLoader.loadAWTImpl();
     JAWTJNILibLoader.loadNativeWindow("awt");
 
-    lockedStack   = null;
     headlessMode = GraphicsEnvironment.isHeadless();
 
     boolean ok=false;
@@ -108,11 +107,10 @@ public class JAWTUtil {
       useSunToolkitAWTLock = false;
   }
 
-  private static Exception lockedStack;
+  public static void initSingleton() {
+      // just exist to ensure static init has been run
+  }
 
-  // Just a hook to let this class being initialized,
-  // ie loading the native libraries ..
-  public static void init() { }
 
   public static final boolean hasJava2D() {
     return j2dExist;
@@ -156,47 +154,36 @@ public class JAWTUtil {
     }
   }
 
-  public static synchronized void lockToolkit() throws NativeWindowException {
-    if (isJava2DQueueFlusherThread()) return;
+  private static RecursiveToolkitLock recurLock = new RecursiveToolkitLock();
 
-    if (null!=lockedStack) {
-      lockedStack.printStackTrace();
-      throw new NativeWindowException("JAWT Toolkit already locked - "+Thread.currentThread().getName());
-    }
-    lockedStack = new Exception("JAWT Toolkit already locked by: "+Thread.currentThread().getName());
+  public static synchronized void lockToolkit() throws NativeWindowException {
+    recurLock.lock();
 
-    if (headlessMode) {
-      // Workaround for running (to some degree) in headless
-      // environments but still supporting rendering via pbuffers
-      // For full correctness, would need to implement a Lock class
-      return;
+    if(recurLock.getRecursionCount()==0 &&
+       !isJava2DQueueFlusherThread() && 
+       !headlessMode) {
+        awtLock();
     }
-
-    awtLock();
   }
 
   public static synchronized void unlockToolkit() {
-    if (isJava2DQueueFlusherThread()) return;
-
-    if (null!=lockedStack) {
-        lockedStack = null;
-        if (headlessMode) {
-          // Workaround for running (to some degree) in headless
-          // environments but still supporting rendering via pbuffers
-          // For full correctness, would need to implement a Lock class
-          return;
-        }
+    recurLock.validateLocked();
 
+    if(recurLock.getRecursionCount()==0 &&
+       !isJava2DQueueFlusherThread() && 
+       !headlessMode) {
         awtUnlock();
     }
+
+    recurLock.unlock();
   }
 
   public static boolean isToolkitLocked() {
-    return null!=lockedStack;
+    return recurLock.isLocked();
   }
 
   public static Exception getLockedStack() {
-    return lockedStack;
+    return recurLock.getLockedStack();
   }
 }
 
diff --git a/src/nativewindow/classes/com/jogamp/nativewindow/impl/jawt/JAWTWindow.java b/src/nativewindow/classes/com/jogamp/nativewindow/impl/jawt/JAWTWindow.java
index 68e61cd85..a59b34eb0 100644
--- a/src/nativewindow/classes/com/jogamp/nativewindow/impl/jawt/JAWTWindow.java
+++ b/src/nativewindow/classes/com/jogamp/nativewindow/impl/jawt/JAWTWindow.java
@@ -101,45 +101,37 @@ public abstract class JAWTWindow implements NativeWindow {
     bounds.setHeight(jawtBounds.getHeight());
   }
 
-  private volatile Exception lockedStack = null;
+  private RecursiveToolkitLock recurLock = new RecursiveToolkitLock();
 
   protected abstract int lockSurfaceImpl() throws NativeWindowException;
 
   public final synchronized int lockSurface() throws NativeWindowException {
-    // We have to be the owner of the JAWT ToolkitLock 'lock' to benefit from it's
-    // recursive and blocking lock capabitlites. 
-    // Otherwise a followup ToolkitLock would deadlock, 
-    // since we already have locked JAWT with the surface lock.
-    NativeWindowFactory.getDefaultFactory().getToolkitLock().lock();
-
-    // recursion not necessary here, due to the blocking ToolkitLock ..
-    if (null!=lockedStack) {
-      lockedStack.printStackTrace();
-      throw new NativeWindowException("JAWT Surface already locked - "+Thread.currentThread().getName()+" "+this);
+    recurLock.lock();
+
+    if(recurLock.getRecursionCount() == 0) {
+        return lockSurfaceImpl();
     }
-    lockedStack = new Exception("JAWT Surface previously locked by "+Thread.currentThread().getName());
 
-    return lockSurfaceImpl();
+    return LOCK_SUCCESS;
   }
 
   protected abstract void unlockSurfaceImpl() throws NativeWindowException;
 
   public synchronized void unlockSurface() {
-    if (null!=lockedStack) {
-        lockedStack = null;
-    } else {
-        throw new NativeWindowException("JAWT Surface not locked");
+    recurLock.validateLocked();
+
+    if(recurLock.getRecursionCount()==0) {
+        unlockSurfaceImpl();
     }
-    unlockSurfaceImpl();
-    NativeWindowFactory.getDefaultFactory().getToolkitLock().unlock();
+    recurLock.unlock();
   }
 
   public synchronized boolean isSurfaceLocked() {
-    return null!=lockedStack;
+    return recurLock.isLocked();
   }
 
   public Exception getLockedStack() {
-    return lockedStack;
+    return recurLock.getLockedStack();
   }
 
   public boolean surfaceSwap() {
diff --git a/src/nativewindow/classes/com/jogamp/nativewindow/impl/jawt/x11/X11JAWTWindow.java b/src/nativewindow/classes/com/jogamp/nativewindow/impl/jawt/x11/X11JAWTWindow.java
index f7151d9f1..c74a62b7e 100644
--- a/src/nativewindow/classes/com/jogamp/nativewindow/impl/jawt/x11/X11JAWTWindow.java
+++ b/src/nativewindow/classes/com/jogamp/nativewindow/impl/jawt/x11/X11JAWTWindow.java
@@ -56,74 +56,83 @@ public class X11JAWTWindow extends JAWTWindow {
   protected void initNative() throws NativeWindowException {
     if(0==config.getScreen().getDevice().getHandle()) {
         AWTGraphicsDevice awtDevice = (AWTGraphicsDevice) config.getScreen().getDevice();
-        NativeWindowFactory.getDefaultFactory().getToolkitLock().lock();
-        try {
-          long displayHandle = X11SunJDKReflection.graphicsDeviceGetDisplay(awtDevice.getGraphicsDevice());
-          if(0==displayHandle) {
-                displayHandle = X11Util.createThreadLocalDefaultDisplay();
-          }
-          awtDevice.setHandle(displayHandle);
-        } finally {
-          NativeWindowFactory.getDefaultFactory().getToolkitLock().unlock();
+        long displayHandle = X11SunJDKReflection.graphicsDeviceGetDisplay(awtDevice.getGraphicsDevice());
+        if(0==displayHandle) {
+            displayHandle = X11Util.createThreadLocalDisplay(null);
         }
+        awtDevice.setHandle(displayHandle);
     }
   }
 
   protected int lockSurfaceImpl() throws NativeWindowException {
-    int ret = NativeWindow.LOCK_SUCCESS;
-    ds = JAWT.getJAWT().GetDrawingSurface(component);
-    if (ds == null) {
-      // Widget not yet realized
-      unlockSurface();
-      return LOCK_SURFACE_NOT_READY;
-    }
-    int res = ds.Lock();
-    dsLocked = ( 0 == ( res & JAWTFactory.JAWT_LOCK_ERROR ) ) ;
-    if (!dsLocked) {
-      unlockSurface();
-      throw new NativeWindowException("Unable to lock surface");
-    }
-    // See whether the surface changed and if so destroy the old
-    // OpenGL context so it will be recreated (NOTE: removeNotify
-    // should handle this case, but it may be possible that race
-    // conditions can cause this code to be triggered -- should test
-    // more)
-    if ((res & JAWTFactory.JAWT_LOCK_SURFACE_CHANGED) != 0) {
-      ret = LOCK_SURFACE_CHANGED;
-    }
-    dsi = ds.GetDrawingSurfaceInfo();
-    if (dsi == null) {
-      unlockSurface();
-      return LOCK_SURFACE_NOT_READY;
-    }
-    x11dsi = (JAWT_X11DrawingSurfaceInfo) dsi.platformInfo();
-    if (x11dsi == null) {
-      unlockSurface();
-      return LOCK_SURFACE_NOT_READY;
-    }
-    drawable = x11dsi.getDrawable();
-    if (drawable == 0) {
-      unlockSurface();
-      return LOCK_SURFACE_NOT_READY;
-    } else {
-      updateBounds(dsi.getBounds());
+    // JAWTUtil.lockToolkit();
+    // config.getNativeGraphicsConfiguration().getScreen().getDevice().lock();
+    try {
+        int ret = NativeWindow.LOCK_SUCCESS;
+        ds = JAWT.getJAWT().GetDrawingSurface(component);
+        if (ds == null) {
+          // Widget not yet realized
+          unlockSurface();
+          return LOCK_SURFACE_NOT_READY;
+        }
+        int res = ds.Lock();
+        dsLocked = ( 0 == ( res & JAWTFactory.JAWT_LOCK_ERROR ) ) ;
+        if (!dsLocked) {
+          unlockSurface();
+          throw new NativeWindowException("Unable to lock surface");
+        }
+        // See whether the surface changed and if so destroy the old
+        // OpenGL context so it will be recreated (NOTE: removeNotify
+        // should handle this case, but it may be possible that race
+        // conditions can cause this code to be triggered -- should test
+        // more)
+        if ((res & JAWTFactory.JAWT_LOCK_SURFACE_CHANGED) != 0) {
+          ret = LOCK_SURFACE_CHANGED;
+        }
+        dsi = ds.GetDrawingSurfaceInfo();
+        if (dsi == null) {
+          unlockSurface();
+          return LOCK_SURFACE_NOT_READY;
+        }
+        x11dsi = (JAWT_X11DrawingSurfaceInfo) dsi.platformInfo();
+        if (x11dsi == null) {
+          unlockSurface();
+          return LOCK_SURFACE_NOT_READY;
+        }
+        drawable = x11dsi.getDrawable();
+        if (drawable == 0) {
+          unlockSurface();
+          return LOCK_SURFACE_NOT_READY;
+        } else {
+          updateBounds(dsi.getBounds());
+        }
+        return ret;
+    } finally {
+        // config.getNativeGraphicsConfiguration().getScreen().getDevice().unlock();
+        // JAWTUtil.unlockToolkit();
     }
-    return ret;
   }
 
   protected void unlockSurfaceImpl() throws NativeWindowException {
-    if(null!=ds) {
-        if (null!=dsi) {
-            ds.FreeDrawingSurfaceInfo(dsi);
-        }
-        if (dsLocked) {
-            ds.Unlock();
+    // JAWTUtil.lockToolkit();
+    // config.getNativeGraphicsConfiguration().getScreen().getDevice().lock();
+    try {
+        if(null!=ds) {
+            if (null!=dsi) {
+                ds.FreeDrawingSurfaceInfo(dsi);
+            }
+            if (dsLocked) {
+                ds.Unlock();
+            }
+            JAWT.getJAWT().FreeDrawingSurface(ds);
         }
-        JAWT.getJAWT().FreeDrawingSurface(ds);
+        ds = null;
+        dsi = null;
+        x11dsi = null;
+    } finally {
+        // config.getNativeGraphicsConfiguration().getScreen().getDevice().unlock();
+        // JAWTUtil.unlockToolkit();
     }
-    ds = null;
-    dsi = null;
-    x11dsi = null;
   }
 
   // Variables for lockSurface/unlockSurface
diff --git a/src/nativewindow/classes/com/jogamp/nativewindow/impl/x11/X11GraphicsConfigurationFactory.java b/src/nativewindow/classes/com/jogamp/nativewindow/impl/x11/X11GraphicsConfigurationFactory.java
index 0cd02558a..fbf4524a4 100644
--- a/src/nativewindow/classes/com/jogamp/nativewindow/impl/x11/X11GraphicsConfigurationFactory.java
+++ b/src/nativewindow/classes/com/jogamp/nativewindow/impl/x11/X11GraphicsConfigurationFactory.java
@@ -58,19 +58,13 @@ public class X11GraphicsConfigurationFactory extends GraphicsConfigurationFactor
         int num[] = { -1 };
         long display = screen.getDevice().getHandle();
 
-        X11Util.XLockDisplay(display);
-        try {
-            XVisualInfo[] xvis = X11Lib.XGetVisualInfoCopied(display, X11Lib.VisualIDMask|X11Lib.VisualScreenMask, xvi_temp, num, 0);
+        XVisualInfo[] xvis = X11Lib.XGetVisualInfo(display, X11Lib.VisualIDMask|X11Lib.VisualScreenMask, xvi_temp, num, 0);
 
-            if(xvis==null || num[0]<1) {
-                return null;
-            }
-
-            return XVisualInfo.create(xvis[0]);
-        } finally {
-            X11Util.XUnlockDisplay(display);
+        if(xvis==null || num[0]<1) {
+            return null;
         }
 
+        return XVisualInfo.create(xvis[0]);
     }
 
     public static XVisualInfo getXVisualInfo(AbstractGraphicsScreen screen, Capabilities capabilities)
@@ -90,29 +84,24 @@ public class X11GraphicsConfigurationFactory extends GraphicsConfigurationFactor
         vinfo_template.setC_class(c_class);
         long display = screen.getDevice().getHandle();
 
-        X11Util.XLockDisplay(display);
-        try {
-            XVisualInfo[] vinfos = X11Lib.XGetVisualInfoCopied(display, X11Lib.VisualScreenMask, vinfo_template, num, 0);
-            XVisualInfo best=null;
-            int rdepth = capabilities.getRedBits() + capabilities.getGreenBits() + capabilities.getBlueBits() + capabilities.getAlphaBits();
-            for (int i = 0; vinfos!=null && i < num[0]; i++) {
-                if ( best == null || 
-                     best.getDepth() < vinfos[i].getDepth() )
-                {
-                    best = vinfos[i];
-                    if(rdepth <= best.getDepth())
-                        break;
-                }
-            }
-            if ( null!=best && ( rdepth <= best.getDepth() || 24 == best.getDepth()) ) {
-                ret = XVisualInfo.create(best);
+        XVisualInfo[] vinfos = X11Lib.XGetVisualInfo(display, X11Lib.VisualScreenMask, vinfo_template, num, 0);
+        XVisualInfo best=null;
+        int rdepth = capabilities.getRedBits() + capabilities.getGreenBits() + capabilities.getBlueBits() + capabilities.getAlphaBits();
+        for (int i = 0; vinfos!=null && i < num[0]; i++) {
+            if ( best == null || 
+                 best.getDepth() < vinfos[i].getDepth() )
+            {
+                best = vinfos[i];
+                if(rdepth <= best.getDepth())
+                    break;
             }
-            best = null;
-
-            return ret;
-        } finally {
-            X11Util.XUnlockDisplay(display);
         }
+        if ( null!=best && ( rdepth <= best.getDepth() || 24 == best.getDepth()) ) {
+            ret = XVisualInfo.create(best);
+        }
+        best = null;
+
+        return ret;
     }
 }
 
diff --git a/src/nativewindow/classes/com/jogamp/nativewindow/impl/x11/X11Util.java b/src/nativewindow/classes/com/jogamp/nativewindow/impl/x11/X11Util.java
index 6e3c62d3b..924185210 100644
--- a/src/nativewindow/classes/com/jogamp/nativewindow/impl/x11/X11Util.java
+++ b/src/nativewindow/classes/com/jogamp/nativewindow/impl/x11/X11Util.java
@@ -52,7 +52,6 @@ import com.jogamp.nativewindow.impl.*;
  */
 public class X11Util {
     private static final boolean DEBUG = Debug.debug("X11Util");
-    private static final boolean DEBUG_XDISPLAY_LOCK = false;
 
     public static final String nullDisplayName;
 
@@ -62,12 +61,7 @@ public class X11Util {
         initialize( true );
 
         long dpy = X11Lib.XOpenDisplay(null);
-        XLockDisplay(dpy);
-        try {
-            nullDisplayName = X11Lib.XDisplayString(dpy);
-        } finally {
-            XUnlockDisplay(dpy);
-        }
+        nullDisplayName = X11Lib.XDisplayString(dpy);
         X11Lib.XCloseDisplay(dpy);
         if(DEBUG) {
             System.out.println("X11 Display(NULL) <"+nullDisplayName+">");
@@ -136,30 +130,17 @@ public class X11Util {
         return num;
     }
 
-    /** 
-     * @return If name is null, it returns the previous queried NULL display name,
-     * otherwise the name. */
-    public static String validateDisplayName(String name) {
-        return ( null == name ) ? nullDisplayName : name ;
-    }
-
-    public static String validateDisplayName(String name, long handle) {
-        if(null==name && 0!=handle) {
-            name = getNameOfDisplay(handle);
-        }
-        return ( null == name ) ? nullDisplayName : name ;
-    }
+    /*******************************
+     **
+     ** TLS Management
+     ** 
+     *******************************/
 
     /** Returns a clone of the thread local display map, you may {@link Object#wait()} on it */
     public static Map getCurrentDisplayMap() {
         return (Map) ((HashMap)getCurrentDisplayMapImpl()).clone();
     }
 
-    /** Returns this thread current default display.  If it doesn not exist, it is being created, otherwise the reference count is increased */
-    public static long createThreadLocalDefaultDisplay() {
-        return createThreadLocalDisplay(null);
-    }
-
     /** Returns this thread named display. If it doesn not exist, it is being created, otherwise the reference count is increased */
     public static long createThreadLocalDisplay(String name) {
         name = validateDisplayName(name);
@@ -237,65 +218,6 @@ public class X11Util {
         return closeThreadLocalDisplay(ndpy.getName());
     }
 
-    public static boolean setSynchronizeDisplay(long handle, boolean onoff) {
-        boolean res=false;
-        XLockDisplay(handle);
-        try {
-            res = X11Lib.XSynchronize(handle, onoff);
-        } finally {
-            XUnlockDisplay(handle);
-        }
-        return res;
-    }
-
-    public static String getNameOfDisplay(long handle) {
-        String name;
-        XLockDisplay(handle);
-        try {
-            name = X11Lib.XDisplayString(handle);
-        } finally {
-            XUnlockDisplay(handle);
-        }
-        return name;
-    }
-
-    public static void XLockDisplay(long handle) {
-        if(DEBUG_XDISPLAY_LOCK) {
-            NamedDisplay ndpy;
-            synchronized(globalLock) {
-                ndpy = (NamedDisplay) globalNamedDisplayMap.get(handle);
-            }
-            if(null==ndpy) {
-                throw new RuntimeException("X11Util.Display: Display(0x"+Long.toHexString(handle)+") with given handle is not mapped, thread "+Thread.currentThread().getName());
-            }
-            ndpy.lock();
-            try {
-                X11Lib.XLockDisplay(handle);
-            } catch (Throwable t) {
-                ndpy.unlock();
-                throw new RuntimeException(t);
-            }
-        } else {
-            X11Lib.XLockDisplay(handle);
-        }
-    }
-
-    public static void XUnlockDisplay(long handle) {
-        if(DEBUG_XDISPLAY_LOCK) {
-            NamedDisplay ndpy;
-            synchronized(globalLock) {
-                ndpy = (NamedDisplay) globalNamedDisplayMap.get(handle);
-            }
-            if(null==ndpy) {
-                throw new RuntimeException("X11Util.Display: Display(0x"+Long.toHexString(handle)+") with given handle is not mapped, thread "+Thread.currentThread().getName());
-            }
-            X11Lib.XUnlockDisplay(handle);
-            ndpy.unlock();
-        } else {
-            X11Lib.XUnlockDisplay(handle);
-        }
-    }
-
     public static boolean markThreadLocalDisplayUncloseable(long handle) {
         NamedDisplay ndpy;
         synchronized(globalLock) {
@@ -349,5 +271,52 @@ public class X11Util {
         return (NamedDisplay) displayMap.get(name);
     }
 
+    /*******************************
+     **
+     ** Non TLS Functions
+     ** 
+     *******************************/
+
+    /** 
+     * @return If name is null, it returns the previous queried NULL display name,
+     * otherwise the name. */
+    public static String validateDisplayName(String name) {
+        return ( null == name ) ? nullDisplayName : name ;
+    }
+
+    public static String validateDisplayName(String name, long handle) {
+        if(null==name && 0!=handle) {
+            name = getNameOfDisplay(handle);
+        }
+        return validateDisplayName(name);
+    }
+
+    public static boolean setSynchronizeDisplay(long handle, boolean onoff) {
+        boolean res = X11Lib.XSynchronize(handle, onoff);
+        return res;
+    }
+
+    public static String getNameOfDisplay(long handle) {
+        String name = X11Lib.XDisplayString(handle);
+        return name;
+    }
+
+    public static void XLockDisplay(long handle) {
+        if(DEBUG) {
+            System.out.println("... X11 Display Lock try 0x"+Long.toHexString(handle));
+        }
+        X11Lib.XLockDisplay(handle);
+        if(DEBUG) {
+            System.out.println("+++ X11 Display Lock got 0x"+Long.toHexString(handle));
+        }
+    }
+
+    public static void XUnlockDisplay(long handle) {
+        if(DEBUG) {
+            System.out.println("--- X11 Display Lock rel 0x"+Long.toHexString(handle));
+        }
+        X11Lib.XUnlockDisplay(handle);
+    }
+
     private static native void initialize(boolean initConcurrentThreadSupport);
 }
diff --git a/src/nativewindow/classes/com/jogamp/nativewindow/impl/x11/awt/X11AWTNativeWindowFactory.java b/src/nativewindow/classes/com/jogamp/nativewindow/impl/x11/awt/X11AWTNativeWindowFactory.java
deleted file mode 100644
index 616220e14..000000000
--- a/src/nativewindow/classes/com/jogamp/nativewindow/impl/x11/awt/X11AWTNativeWindowFactory.java
+++ /dev/null
@@ -1,87 +0,0 @@
-/*
- * Copyright (c) 2008-2009 Sun Microsystems, Inc. All Rights Reserved.
- * 
- * Redistribution and use in source and binary forms, with or without
- * modification, are permitted provided that the following conditions are
- * met:
- * 
- * - Redistribution of source code must retain the above copyright
- *   notice, this list of conditions and the following disclaimer.
- * 
- * - Redistribution in binary form must reproduce the above copyright
- *   notice, this list of conditions and the following disclaimer in the
- *   documentation and/or other materials provided with the distribution.
- * 
- * Neither the name of Sun Microsystems, Inc. or the names of
- * contributors may be used to endorse or promote products derived from
- * this software without specific prior written permission.
- * 
- * This software is provided "AS IS," without a warranty of any kind. ALL
- * EXPRESS OR IMPLIED CONDITIONS, REPRESENTATIONS AND WARRANTIES,
- * INCLUDING ANY IMPLIED WARRANTY OF MERCHANTABILITY, FITNESS FOR A
- * PARTICULAR PURPOSE OR NON-INFRINGEMENT, ARE HEREBY EXCLUDED. SUN
- * MICROSYSTEMS, INC. ("SUN") AND ITS LICENSORS SHALL NOT BE LIABLE FOR
- * ANY DAMAGES SUFFERED BY LICENSEE AS A RESULT OF USING, MODIFYING OR
- * DISTRIBUTING THIS SOFTWARE OR ITS DERIVATIVES. IN NO EVENT WILL SUN OR
- * ITS LICENSORS BE LIABLE FOR ANY LOST REVENUE, PROFIT OR DATA, OR FOR
- * DIRECT, INDIRECT, SPECIAL, CONSEQUENTIAL, INCIDENTAL OR PUNITIVE
- * DAMAGES, HOWEVER CAUSED AND REGARDLESS OF THE THEORY OF LIABILITY,
- * ARISING OUT OF THE USE OF OR INABILITY TO USE THIS SOFTWARE, EVEN IF
- * SUN HAS BEEN ADVISED OF THE POSSIBILITY OF SUCH DAMAGES.
- */
-
-package com.jogamp.nativewindow.impl.x11.awt;
-
-import java.awt.GraphicsConfiguration;
-import java.awt.GraphicsDevice;
-import java.awt.GraphicsEnvironment;
-import javax.media.nativewindow.*;
-
-import com.jogamp.nativewindow.impl.*;
-import com.jogamp.nativewindow.impl.jawt.*;
-import com.jogamp.nativewindow.impl.jawt.x11.*;
-import com.jogamp.nativewindow.impl.x11.*;
-
-public class X11AWTNativeWindowFactory extends NativeWindowFactoryImpl {
-
-    // When running the AWT on X11 platforms, we use the AWT native
-    // interface (JAWT) to lock and unlock the toolkit
-    private ToolkitLock toolkitLock = new ToolkitLock() {
-            private Thread owner;
-            private int recursionCount;
-            
-            public synchronized void lock() {
-                Thread cur = Thread.currentThread();
-                if (owner == cur) {
-                    ++recursionCount;
-                    return;
-                }
-                while (owner != null) {
-                    try {
-                        wait();
-                    } catch (InterruptedException e) {
-                        throw new RuntimeException(e);
-                    }
-                }
-                owner = cur;
-                JAWTUtil.lockToolkit();
-            }
-
-            public synchronized void unlock() {
-                if (owner != Thread.currentThread()) {
-                    throw new RuntimeException("Not owner");
-                }
-                if (recursionCount > 0) {
-                    --recursionCount;
-                    return;
-                }
-                owner = null;
-                JAWTUtil.unlockToolkit();
-                notifyAll();
-            }
-        };
-
-    public ToolkitLock getToolkitLock() {
-        return toolkitLock;
-    }
-}
diff --git a/src/nativewindow/classes/javax/media/nativewindow/AbstractGraphicsDevice.java b/src/nativewindow/classes/javax/media/nativewindow/AbstractGraphicsDevice.java
index 4240ec81e..c133df5b4 100644
--- a/src/nativewindow/classes/javax/media/nativewindow/AbstractGraphicsDevice.java
+++ b/src/nativewindow/classes/javax/media/nativewindow/AbstractGraphicsDevice.java
@@ -55,4 +55,8 @@ public interface AbstractGraphicsDevice extends Cloneable {
      * if such thing exist.
      */
     public long getHandle();
+
+    public void lock();
+
+    public void unlock();
 }
diff --git a/src/nativewindow/classes/javax/media/nativewindow/DefaultGraphicsDevice.java b/src/nativewindow/classes/javax/media/nativewindow/DefaultGraphicsDevice.java
index fdc849d0f..e18b7b2dc 100644
--- a/src/nativewindow/classes/javax/media/nativewindow/DefaultGraphicsDevice.java
+++ b/src/nativewindow/classes/javax/media/nativewindow/DefaultGraphicsDevice.java
@@ -62,6 +62,12 @@ public class DefaultGraphicsDevice implements Cloneable, AbstractGraphicsDevice
         return handle;
     }
 
+    public void lock() {
+    }
+
+    public void unlock() {
+    }
+
     public String toString() {
         return getClass().toString()+"[type "+getType()+", handle 0x"+Long.toHexString(getHandle())+"]";
     }
diff --git a/src/nativewindow/classes/javax/media/nativewindow/NativeWindow.java b/src/nativewindow/classes/javax/media/nativewindow/NativeWindow.java
index 09c605e1c..7d0c52e3b 100644
--- a/src/nativewindow/classes/javax/media/nativewindow/NativeWindow.java
+++ b/src/nativewindow/classes/javax/media/nativewindow/NativeWindow.java
@@ -53,6 +53,9 @@ package javax.media.nativewindow;
     such as the window handle.
 */
 public interface NativeWindow extends SurfaceUpdatedListener {
+  /** Unlocked state */
+  public static final int LOCK_SURFACE_UNLOCKED = 0;
+
   /** Returned by {@link #lockSurface()} if the surface is not ready to be locked. */
   public static final int LOCK_SURFACE_NOT_READY = 1;
 
diff --git a/src/nativewindow/classes/javax/media/nativewindow/NativeWindowFactory.java b/src/nativewindow/classes/javax/media/nativewindow/NativeWindowFactory.java
index 14cb830e3..41be6e4b2 100644
--- a/src/nativewindow/classes/javax/media/nativewindow/NativeWindowFactory.java
+++ b/src/nativewindow/classes/javax/media/nativewindow/NativeWindowFactory.java
@@ -76,6 +76,7 @@ public abstract class NativeWindowFactory {
     private static String nativeOSNameCustom;
     private static final boolean isAWTAvailable;
     public static final String AWTComponentClassName = "java.awt.Component" ;
+    public static final String X11UtilClassName = "com.jogamp.nativewindow.impl.x11.X11Util";
 
     /** Creates a new NativeWindowFactory instance. End users do not
         need to call this method. */
@@ -112,6 +113,10 @@ public abstract class NativeWindowFactory {
             nativeWindowingTypeCustom = nativeOSNameCustom;
         }
 
+        if( TYPE_X11.equals(nativeWindowingTypePure) ) {
+            ReflectionUtil.callStaticMethod( X11UtilClassName, "initSingleton", new Class[]  { }, new Object[] { } );
+        }
+
         registeredFactories = Collections.synchronizedMap(new HashMap());
 
         String factoryClassName = null;
@@ -124,87 +129,25 @@ public abstract class NativeWindowFactory {
     
         // We break compile-time dependencies on the AWT here to
         // make it easier to run this code on mobile devices
-
         isAWTAvailable = !Debug.getBooleanProperty("java.awt.headless", true, acc) &&
                           ReflectionUtil.isClassAvailable(AWTComponentClassName) &&
                           ReflectionUtil.isClassAvailable("javax.media.nativewindow.awt.AWTGraphicsDevice") ;
 
-        boolean toolkitLockForced   = Debug.getBooleanProperty("nativewindow.locking", true, acc);
-        boolean awtToolkitLockDisabled = !isAWTAvailable ||
-                                         Debug.getBooleanProperty("nativewindow.nolocking", true, acc) ;
-
-        NativeWindowFactory _factory = null;
-        
-        if( !awtToolkitLockDisabled && TYPE_X11.equals(nativeWindowingTypeCustom) ) {
-            // There are certain operations that may be done by
-            // user-level native code which must share the display
-            // connection with the underlying window toolkit. In JOGL,
-            // for example, the AWT GLCanvas makes GLX and OpenGL
-            // calls against an X Drawable that was created by the
-            // AWT. In this case, the AWT Native Interface ("JAWT") is
-            // used to lock and unlock this surface, which grabs and
-            // releases a lock which is also used internally to the
-            // AWT implementation. This is required because the AWT
-            // makes X calls from multiple threads: for example, the
-            // AWT Toolkit thread and one or more Event Dispatch
-            // Threads.
-            //
-            // There are cases where synchronization with the
-            // toolkit is required in case of a shared resource pattern,
-            // e.g. with AWT.  From recollection, visual selection is 
-            // performed outside of the cover of the
-            // toolkit's lock, and the toolkit's display connection is
-            // used for this operation, so for correctness the toolkit
-            // must be locked during glXChooseFBConfig /
-            // glXChooseVisual. Synchronization with the toolkit is
-            // definitely needed for support of external GLDrawables,
-            // where JOGL creates additional OpenGL contexts on a
-            // surface that was created by a third party. External
-            // GLDrawables are the foundation of the Java 2D / JOGL
-            // bridge. While this bridge may be historical at this
-            // point, support for external GLDrawables on platforms
-            // that can support them (namely, WGL and X11 platforms;
-            // Mac OS X does not currently have the required
-            // primitives in its OpenGL window system binding) makes
-            // the JOGL library more powerful.
-            // 
-            // The X11AWTNativeWindowFactory provides a locking
-            // mechanism compatible with the AWT. It may be desirable
-            // to replace this window factory when using third-party
-            // toolkits like Newt even when running on Java SE when
-            // the AWT is available.
-
-            try {
-                Constructor factoryConstructor =
-                    ReflectionUtil.getConstructor("com.jogamp.nativewindow.impl.x11.awt.X11AWTNativeWindowFactory", new Class[] {});
-                _factory = (NativeWindowFactory) factoryConstructor.newInstance(null);
-            } catch (Exception e) { }
-        }
-
-        if (toolkitLockForced && null==_factory) {
-            try {
-                Constructor factoryConstructor =
-                    ReflectionUtil.getConstructor("com.jogamp.nativewindow.impl.LockingNativeWindowFactory", new Class[] {});
-                _factory = (NativeWindowFactory) factoryConstructor.newInstance(null);
-            } catch (Exception e) { }
-        }
-
-        if (null !=_factory) {
-            factory = _factory;
-        }
-
         if ( isAWTAvailable ) {
             // register either our default factory or (if exist) the X11/AWT one -> AWT Component
             registerFactory(ReflectionUtil.getClass(AWTComponentClassName, false), factory);
         }
-        defaultFactory = factory;
 
         if(DEBUG) {
-            System.err.println("NativeWindowFactory toolkitLockForced "+toolkitLockForced+
-                               ", awtToolkitLockDisabled "+awtToolkitLockDisabled+", defaultFactory "+factory);
+            System.err.println("NativeWindowFactory isAWTAvailable "+isAWTAvailable+
+                               ", defaultFactory "+factory);
         }
     }
 
+    public static void initSingleton() {
+        // just exist to ensure static init has been run
+    }
+
     /** @return true if not headless, AWT Component and NativeWindow's AWT part available */
     public static boolean isAWTAvailable() { return isAWTAvailable; }
 
@@ -216,32 +159,12 @@ public abstract class NativeWindowFactory {
         return useCustom?nativeWindowingTypeCustom:nativeWindowingTypePure;
     }
 
-    /** Sets the default NativeWindowFactory. Certain operations on
-        X11 platforms require synchronization, and the implementation
-        of this synchronization may be specific to the window toolkit
-        in use. It is impractical to require that all of the APIs that
-        might require synchronization receive a {@link ToolkitLock
-        ToolkitLock} as argument. For this reason the concept of a
-        default NativeWindowFactory is introduced. The toolkit lock
-        provided via {@link #getToolkitLock getToolkitLock} from this
-        default NativeWindowFactory will be used for synchronization
-        within the Java binding to OpenGL. By default, if the AWT is
-        available, the default toolkit will support the AWT. */
+    /** Sets the default NativeWindowFactory. */
     public static void setDefaultFactory(NativeWindowFactory factory) {
         defaultFactory = factory;
     }
 
-    /** Gets the default NativeWindowFactory. Certain operations on
-        X11 platforms require synchronization, and the implementation
-        of this synchronization may be specific to the window toolkit
-        in use. It is impractical to require that all of the APIs that
-        might require synchronization receive a {@link ToolkitLock
-        ToolkitLock} as argument. For this reason the concept of a
-        default NativeWindowFactory is introduced. The toolkit lock
-        provided via {@link #getToolkitLock getToolkitLock} from this
-        default NativeWindowFactory will be used for synchronization
-        within the Java binding to OpenGL. By default, if the AWT is
-        available, the default toolkit will support the AWT. */
+    /** Gets the default NativeWindowFactory. */
     public static NativeWindowFactory getDefaultFactory() {
         return defaultFactory;
     }
@@ -308,10 +231,4 @@ public abstract class NativeWindowFactory {
         NativeWindow. Implementors of concrete NativeWindowFactory
         subclasses should override this method. */
     protected abstract NativeWindow getNativeWindowImpl(Object winObj, AbstractGraphicsConfiguration config) throws IllegalArgumentException;
-
-    /** Returns the object which provides support for synchronizing
-        with the underlying window toolkit.<br>
-        @see ToolkitLock
-      */
-    public abstract ToolkitLock getToolkitLock();
 }
diff --git a/src/nativewindow/classes/javax/media/nativewindow/ToolkitLock.java b/src/nativewindow/classes/javax/media/nativewindow/ToolkitLock.java
deleted file mode 100644
index 6f83896fa..000000000
--- a/src/nativewindow/classes/javax/media/nativewindow/ToolkitLock.java
+++ /dev/null
@@ -1,74 +0,0 @@
-/*
- * Copyright (c) 2008 Sun Microsystems, Inc. All Rights Reserved.
- * 
- * Redistribution and use in source and binary forms, with or without
- * modification, are permitted provided that the following conditions are
- * met:
- * 
- * - Redistribution of source code must retain the above copyright
- *   notice, this list of conditions and the following disclaimer.
- * 
- * - Redistribution in binary form must reproduce the above copyright
- *   notice, this list of conditions and the following disclaimer in the
- *   documentation and/or other materials provided with the distribution.
- * 
- * Neither the name of Sun Microsystems, Inc. or the names of
- * contributors may be used to endorse or promote products derived from
- * this software without specific prior written permission.
- * 
- * This software is provided "AS IS," without a warranty of any kind. ALL
- * EXPRESS OR IMPLIED CONDITIONS, REPRESENTATIONS AND WARRANTIES,
- * INCLUDING ANY IMPLIED WARRANTY OF MERCHANTABILITY, FITNESS FOR A
- * PARTICULAR PURPOSE OR NON-INFRINGEMENT, ARE HEREBY EXCLUDED. SUN
- * MICROSYSTEMS, INC. ("SUN") AND ITS LICENSORS SHALL NOT BE LIABLE FOR
- * ANY DAMAGES SUFFERED BY LICENSEE AS A RESULT OF USING, MODIFYING OR
- * DISTRIBUTING THIS SOFTWARE OR ITS DERIVATIVES. IN NO EVENT WILL SUN OR
- * ITS LICENSORS BE LIABLE FOR ANY LOST REVENUE, PROFIT OR DATA, OR FOR
- * DIRECT, INDIRECT, SPECIAL, CONSEQUENTIAL, INCIDENTAL OR PUNITIVE
- * DAMAGES, HOWEVER CAUSED AND REGARDLESS OF THE THEORY OF LIABILITY,
- * ARISING OUT OF THE USE OF OR INABILITY TO USE THIS SOFTWARE, EVEN IF
- * SUN HAS BEEN ADVISED OF THE POSSIBILITY OF SUCH DAMAGES.
- */
-
-package javax.media.nativewindow;
-
-/** Provides an interface for locking and unlocking the underlying
-    window toolkit, where this is necessary in the OpenGL
-    implementation. This mechanism is generally only needed on X11
-    platforms. Currently it is only used when the AWT is in use.
-    Implementations of this lock, if they are not no-ops, must support
-    reentrant locking and unlocking. <P>
-    
-    The ToolkitLock implementation can be aquired by 
-    {@link NativeWindowFactory#getToolkitLock NativeWindowFactory's getToolkitLock()}.<P>
-
-    All toolkit shared resources shall be accessed by encapsulating the
-    code with a locking block as follows.
-    <PRE>
-    NativeWindowFactory.getDefaultFactory().getToolkitLock().lock();
-    try {
-      long displayHandle = X11Util.getThreadLocalDefaultDisplay();
-      ... some code dealing with shared resources 
-      ... ie the window surface
-    } finally {
-      NativeWindowFactory.getDefaultFactory().getToolkitLock().unlock();
-    }
-    </PRE><P>
-
-    The underlying toolkit's locking mechanism may relate to {@link NativeWindow}'s 
-    {@link NativeWindow#lockSurface lockSurface()}. Hence it is important
-    that both implementation harmonize well, ie {@link NativeWindow#lockSurface lockSurface()}
-    shall issue a ToolkitLock lock befor it aquires it's surface lock. This is true
-    in the AWT implementation for example. Otherwise the surface lock would <i>steal</i>
-    the ToolkitLock's lock and a deadlock would be unavoidable.<P>
-
-    However the necessity of needing a global state synchronization will of course
-    impact your performance very much, especially in case of a multithreaded/multiwindow case.
-    */
-public interface ToolkitLock {
-    /** Locks the toolkit. */
-    public void lock();
-
-    /** Unlocks the toolkit. */
-    public void unlock();
-}
diff --git a/src/nativewindow/classes/javax/media/nativewindow/x11/X11GraphicsDevice.java b/src/nativewindow/classes/javax/media/nativewindow/x11/X11GraphicsDevice.java
index f0ea11011..192abf775 100644
--- a/src/nativewindow/classes/javax/media/nativewindow/x11/X11GraphicsDevice.java
+++ b/src/nativewindow/classes/javax/media/nativewindow/x11/X11GraphicsDevice.java
@@ -33,6 +33,8 @@
 package javax.media.nativewindow.x11;
 
 import javax.media.nativewindow.*;
+import com.jogamp.nativewindow.impl.*;
+import com.jogamp.nativewindow.impl.x11.X11Util;
 
 /** Encapsulates a graphics device on X11 platforms.
  */
@@ -49,5 +51,14 @@ public class X11GraphicsDevice extends DefaultGraphicsDevice implements Cloneabl
     public Object clone() {
       return super.clone();
     }
+
+    public void lock() {
+        X11Util.XLockDisplay(handle);
+    }
+
+    public void unlock() {
+        X11Util.XUnlockDisplay(handle);
+    }
+
 }
 
diff --git a/src/nativewindow/classes/javax/media/nativewindow/x11/X11GraphicsScreen.java b/src/nativewindow/classes/javax/media/nativewindow/x11/X11GraphicsScreen.java
index a18ee91c2..97bdc37cf 100644
--- a/src/nativewindow/classes/javax/media/nativewindow/x11/X11GraphicsScreen.java
+++ b/src/nativewindow/classes/javax/media/nativewindow/x11/X11GraphicsScreen.java
@@ -56,53 +56,23 @@ public class X11GraphicsScreen extends DefaultGraphicsScreen implements Cloneabl
 
     /** Creates a new X11GraphicsScreen using a thread local display connection */
     public static AbstractGraphicsScreen createDefault() {
-        NativeWindowFactory.getDefaultFactory().getToolkitLock().lock();
-        try {
-            long display = X11Util.createThreadLocalDefaultDisplay();
-            X11Util.XLockDisplay(display);
-            try{
-                int scrnIdx = X11Lib.DefaultScreen(display);
-                return createScreenDevice(display, scrnIdx);
-            }finally{
-                X11Util.XUnlockDisplay(display);
-            }
-        } finally {
-            NativeWindowFactory.getDefaultFactory().getToolkitLock().unlock();
-        }
+        long display = X11Util.createThreadLocalDisplay(null);
+        int scrnIdx = X11Lib.DefaultScreen(display);
+        return createScreenDevice(display, scrnIdx);
     }
 
     public long getDefaultVisualID() {
         // It still could be an AWT hold handle ..
-        NativeWindowFactory.getDefaultFactory().getToolkitLock().lock();
-        try {
-            long display = getDevice().getHandle();
-            X11Util.XLockDisplay(display);
-            try{
-                int scrnIdx = X11Lib.DefaultScreen(display);
-                return X11Lib.DefaultVisualID(display, scrnIdx);
-            }finally{
-                X11Util.XUnlockDisplay(display);
-            }
-        } finally {
-            NativeWindowFactory.getDefaultFactory().getToolkitLock().unlock();
-        }
+        long display = getDevice().getHandle();
+        int scrnIdx = X11Lib.DefaultScreen(display);
+        return X11Lib.DefaultVisualID(display, scrnIdx);
     }
 
     private static int fetchScreen(X11GraphicsDevice device, int screen) {
         // It still could be an AWT hold handle ..
-        NativeWindowFactory.getDefaultFactory().getToolkitLock().lock();
-        try {
-            long display = device.getHandle();
-            X11Util.XLockDisplay(display);
-            try{
-                if(X11Lib.XineramaEnabled(display)) {
-                    screen = 0; // Xinerama -> 1 screen
-                }
-            }finally{
-                X11Util.XUnlockDisplay(display);
-            }
-        } finally {
-            NativeWindowFactory.getDefaultFactory().getToolkitLock().unlock();
+        long display = device.getHandle();
+        if(X11Lib.XineramaEnabled(display)) {
+            screen = 0; // Xinerama -> 1 screen
         }
         return screen;
     }
diff --git a/src/nativewindow/native/x11/Xmisc.c b/src/nativewindow/native/x11/Xmisc.c
index 23ff5f854..69ed6ebb8 100644
--- a/src/nativewindow/native/x11/Xmisc.c
+++ b/src/nativewindow/native/x11/Xmisc.c
@@ -132,13 +132,13 @@ static void _FatalError(JNIEnv *env, const char* msg, ...)
     (*env)->FatalError(env, buffer);
 }
 
-static const char * const ClazzNameInternalBufferUtil = "com/jogamp/nativewindow/impl/InternalBufferUtil";
-static const char * const ClazzNameInternalBufferUtilStaticCstrName = "copyByteBuffer";
-static const char * const ClazzNameInternalBufferUtilStaticCstrSignature = "(Ljava/nio/ByteBuffer;)Ljava/nio/ByteBuffer;";
+static const char * const ClazzNameBuffers = "com/jogamp/common/nio/Buffers";
+static const char * const ClazzNameBuffersStaticCstrName = "copyByteBuffer";
+static const char * const ClazzNameBuffersStaticCstrSignature = "(Ljava/nio/ByteBuffer;)Ljava/nio/ByteBuffer;";
 static const char * const ClazzNameByteBuffer = "java/nio/ByteBuffer";
 static const char * const ClazzNameRuntimeException = "java/lang/RuntimeException";
-static jclass clazzInternalBufferUtil = NULL;
-static jmethodID cstrInternalBufferUtil = NULL;
+static jclass clazzBuffers = NULL;
+static jmethodID cstrBuffers = NULL;
 static jclass clazzByteBuffer = NULL;
 static jclass clazzRuntimeException=NULL;
 
@@ -157,14 +157,14 @@ static void _initClazzAccess(JNIEnv *env) {
         _FatalError(env, "FatalError: NEWT X11Window: can't use %s", ClazzNameRuntimeException);
     }
 
-    c = (*env)->FindClass(env, ClazzNameInternalBufferUtil);
+    c = (*env)->FindClass(env, ClazzNameBuffers);
     if(NULL==c) {
-        _FatalError(env, "FatalError: Java_com_jogamp_nativewindow_impl_x11_X11Lib: can't find %s", ClazzNameInternalBufferUtil);
+        _FatalError(env, "FatalError: Java_com_jogamp_nativewindow_impl_x11_X11Lib: can't find %s", ClazzNameBuffers);
     }
-    clazzInternalBufferUtil = (jclass)(*env)->NewGlobalRef(env, c);
+    clazzBuffers = (jclass)(*env)->NewGlobalRef(env, c);
     (*env)->DeleteLocalRef(env, c);
-    if(NULL==clazzInternalBufferUtil) {
-        _FatalError(env, "FatalError: Java_com_jogamp_nativewindow_impl_x11_X11Lib: can't use %s", ClazzNameInternalBufferUtil);
+    if(NULL==clazzBuffers) {
+        _FatalError(env, "FatalError: Java_com_jogamp_nativewindow_impl_x11_X11Lib: can't use %s", ClazzNameBuffers);
     }
     c = (*env)->FindClass(env, ClazzNameByteBuffer);
     if(NULL==c) {
@@ -176,11 +176,11 @@ static void _initClazzAccess(JNIEnv *env) {
         _FatalError(env, "FatalError: Java_com_jogamp_nativewindow_impl_x11_X11Lib: can't use %s", ClazzNameByteBuffer);
     }
 
-    cstrInternalBufferUtil = (*env)->GetStaticMethodID(env, clazzInternalBufferUtil, 
-                            ClazzNameInternalBufferUtilStaticCstrName, ClazzNameInternalBufferUtilStaticCstrSignature);
-    if(NULL==cstrInternalBufferUtil) {
+    cstrBuffers = (*env)->GetStaticMethodID(env, clazzBuffers, 
+                            ClazzNameBuffersStaticCstrName, ClazzNameBuffersStaticCstrSignature);
+    if(NULL==cstrBuffers) {
         _FatalError(env, "FatalError: Java_com_jogamp_nativewindow_impl_x11_X11Lib:: can't create %s.%s %s",
-            ClazzNameInternalBufferUtil, ClazzNameInternalBufferUtilStaticCstrName, ClazzNameInternalBufferUtilStaticCstrSignature);
+            ClazzNameBuffers, ClazzNameBuffersStaticCstrName, ClazzNameBuffersStaticCstrSignature);
     }
 }
 
@@ -266,33 +266,13 @@ Java_com_jogamp_nativewindow_impl_x11_X11Util_initialize(JNIEnv *env, jclass _un
     }
 }
 
-JNIEXPORT jlong JNICALL 
-Java_com_jogamp_nativewindow_impl_x11_X11Lib_dlopen(JNIEnv *env, jclass _unused, jstring name) {
-  const jbyte* chars;
-  void* res;
-  chars = (*env)->GetStringUTFChars(env, name, NULL);
-  res = dlopen(chars, RTLD_LAZY | RTLD_GLOBAL);
-  (*env)->ReleaseStringUTFChars(env, name, chars);
-  return (jlong) ((intptr_t) res);
-}
-
-JNIEXPORT jlong JNICALL 
-Java_com_jogamp_nativewindow_impl_x11_X11Lib_dlsym(JNIEnv *env, jclass _unused, jstring name) {
-  const jbyte* chars;
-  void* res;
-  chars = (*env)->GetStringUTFChars(env, name, NULL);
-  res = dlsym(RTLD_DEFAULT, chars);
-  (*env)->ReleaseStringUTFChars(env, name, chars);
-  return (jlong) ((intptr_t) res);
-}
-
 /*   Java->C glue code:
  *   Java package: com.jogamp.nativewindow.impl.x11.X11Lib
  *    Java method: XVisualInfo XGetVisualInfo(long arg0, long arg1, XVisualInfo arg2, java.nio.IntBuffer arg3)
  *     C function: XVisualInfo *  XGetVisualInfo(Display * , long, XVisualInfo * , int * );
  */
 JNIEXPORT jobject JNICALL
-Java_com_jogamp_nativewindow_impl_x11_X11Lib_XGetVisualInfoCopied1__JJLjava_nio_ByteBuffer_2Ljava_lang_Object_2I(JNIEnv *env, jclass _unused, jlong arg0, jlong arg1, jobject arg2, jobject arg3, jint arg3_byte_offset) {
+Java_com_jogamp_nativewindow_impl_x11_X11Lib_XGetVisualInfo1__JJLjava_nio_ByteBuffer_2Ljava_lang_Object_2I(JNIEnv *env, jclass _unused, jlong arg0, jlong arg1, jobject arg2, jobject arg3, jint arg3_byte_offset) {
   XVisualInfo * _ptr2 = NULL;
   int * _ptr3 = NULL;
   XVisualInfo *  _res;
@@ -316,8 +296,7 @@ Java_com_jogamp_nativewindow_impl_x11_X11Lib_XGetVisualInfoCopied1__JJLjava_nio_
   if (_res == NULL) return NULL;
 
   jbyteSource = (*env)->NewDirectByteBuffer(env, _res, count * sizeof(XVisualInfo));
-  jbyteCopy   = (*env)->CallStaticObjectMethod(env,
-                                               clazzInternalBufferUtil, cstrInternalBufferUtil, jbyteSource);
+  jbyteCopy   = (*env)->CallStaticObjectMethod(env, clazzBuffers, cstrBuffers, jbyteSource);
 
   XFree(_res);
 
@@ -409,8 +388,6 @@ JNIEXPORT jlong JNICALL Java_com_jogamp_nativewindow_impl_x11_X11Lib_CreateDummy
         return 0;
     }
 
-    XLockDisplay(dpy) ;
-
     XSync(dpy, False);
 
     scrn = ScreenOfDisplay(dpy, scrn_idx);
@@ -469,8 +446,6 @@ JNIEXPORT jlong JNICALL Java_com_jogamp_nativewindow_impl_x11_X11Lib_CreateDummy
 
     XSync(dpy, False);
 
-    XUnlockDisplay(dpy) ;
-
     DBG_PRINT2( "X11: [CreateWindow] created window %p on display %p\n", window, dpy);
 
     return (jlong) window;
@@ -492,13 +467,10 @@ JNIEXPORT void JNICALL Java_com_jogamp_nativewindow_impl_x11_X11Lib_DestroyDummy
         _throwNewRuntimeException(NULL, env, "invalid display connection..");
         return;
     }
-    XLockDisplay(dpy) ;
 
     XSync(dpy, False);
     XUnmapWindow(dpy, w);
     XSync(dpy, False);
     XDestroyWindow(dpy, w);
     XSync(dpy, False);
-
-    XUnlockDisplay(dpy) ;
 }