Fix SWT GLCanvas threading. Note: On OSX _only_ it's main thread is valid!

8 files changed, 143 insertions, 126 deletions

diff --git a/make/scripts/tests-osx-x64-mainthread.sh b/make/scripts/tests-osx-x64-mainthread.sh
new file mode 100644
index 000000000..bf95a9b67
--- /dev/null
+++ b/make/scripts/tests-osx-x64-mainthread.sh
@@ -0,0 +1,11 @@
+
+export CLASSPATH=.:../../gluegen/make/../build-macosx/gluegen-rt.jar:../build-macosx/jar/jogl-all-noawt.jar:../build-macosx/jar/jogl-test.jar:../build-macosx/../make/lib/swt/cocoa-macosx-x86_64/swt-debug.jar:../../gluegen/make/../make/lib/junit.jar:/opt-share/apache-ant/lib/ant.jar:/opt-share/apache-ant/lib/ant-junit.jar:../build-macosx/jar/atomic/jogl-swt.jar:../build-macosx/jar/jogl-test.jar
+
+/usr/bin/java -d64 -XstartOnFirstThread -Djava.awt.headless=true  com.jogamp.opengl.test.junit.jogl.swt.TestSWTJOGLGLCanvas01GLn
+#/usr/bin/java -d64 -XstartOnFirstThread -Djava.awt.headless=false com.jogamp.opengl.test.junit.jogl.swt.TestSWTJOGLGLCanvas01GLn
+
+#
+# Not working!
+#/usr/bin/java -d64                      -Djava.awt.headless=true  com.jogamp.opengl.test.junit.jogl.swt.TestSWTJOGLGLCanvas01GLn
+#/usr/bin/java -d64                      -Djava.awt.headless=false com.jogamp.opengl.test.junit.jogl.swt.TestSWTJOGLGLCanvas01GLn
+
diff --git a/src/jogl/classes/com/jogamp/opengl/swt/GLCanvas.java b/src/jogl/classes/com/jogamp/opengl/swt/GLCanvas.java
index 571f5c5b2..5ee58b78d 100644
--- a/src/jogl/classes/com/jogamp/opengl/swt/GLCanvas.java
+++ b/src/jogl/classes/com/jogamp/opengl/swt/GLCanvas.java
@@ -47,7 +47,6 @@ import javax.media.opengl.Threading;
 
 import jogamp.opengl.GLContextImpl;
 import jogamp.opengl.GLDrawableHelper;
-import jogamp.opengl.ThreadingImpl;
 
 import org.eclipse.swt.SWT;
 import org.eclipse.swt.events.ControlAdapter;
@@ -62,6 +61,7 @@ import org.eclipse.swt.widgets.Display;
 import org.eclipse.swt.widgets.Shell;
 
 import com.jogamp.common.GlueGenVersion;
+import com.jogamp.common.os.Platform;
 import com.jogamp.common.util.VersionUtil;
 import com.jogamp.nativewindow.swt.SWTAccessor;
 import com.jogamp.opengl.JoglVersion;
@@ -69,10 +69,6 @@ import com.jogamp.opengl.JoglVersion;
 /**
  * Native SWT Canvas implementing GLAutoDrawable
  * <p>
- * FIXME: Still needs AWT for threading impl.,
- *        ie. will issue a 'wrong thread' error if runs in headless mode!
- * </p>
- * <p>
  * FIXME: If this instance runs in multithreading mode, see {@link Threading#isSingleThreaded()} (impossible), 
  *        proper recursive locking is required for drawable/context @ destroy and display. 
  *        Recreation etc could pull those instances while animating!
@@ -86,12 +82,6 @@ import com.jogamp.opengl.JoglVersion;
          However, since the user shall stick to the GLEventListener model while utilizing
          GLAutoDrawable implementations, she is safe due to the implicit locked state.
  * </p>
- * <p>
- * FIXME: [MT-2] Revise threading code
-          The logic whether to spawn off the GL task and 
-          determination which thread to use is too complex and redundant.
-          (See isRenderThread(), runInGLThread() and runInDesignatedGLThread())
- * </p>
  */
 public class GLCanvas extends Canvas implements GLAutoDrawable {
 
@@ -307,7 +297,7 @@ public class GLCanvas extends Canvas implements GLAutoDrawable {
 
    @Override
    public void display() {
-      runInGLThread(makeCurrentAndDisplayAction, displayAction);
+      runInGLThread(makeCurrentAndDisplayAction);
    }
 
    @Override
@@ -458,7 +448,7 @@ public class GLCanvas extends Canvas implements GLAutoDrawable {
 
    @Override
    public void swapBuffers() throws GLException {
-      runInGLThread(makeCurrentAndSwapBuffersAction, swapBuffersAction);
+      runInGLThread(makeCurrentAndSwapBuffersAction);
    }
 
    // FIXME: API of update() method ?
@@ -478,11 +468,7 @@ public class GLCanvas extends Canvas implements GLAutoDrawable {
         }
 
         if(context.isCreated()) {
-            if (Threading.isSingleThreaded() && !Threading.isOpenGLThread()) {
-               runInDesignatedGLThread(disposeOnEDTGLAction);
-            } else if (context.isCreated()) {
-               helper.disposeGL(GLCanvas.this, drawable, context, postDisposeGLAction);
-            }
+            runInGLThread(disposeOnEDTGLAction);
         }
 
         if (animatorPaused) {
@@ -500,70 +486,29 @@ public class GLCanvas extends Canvas implements GLAutoDrawable {
    }
 
    /**
-    * Determines whether the current thread is the appropriate thread to use the GLContext in. If we are using one of
-    * the single-threaded policies in {@link Threading}, than this is either the SWT event dispatch thread, or the
-    * OpenGL worker thread depending on the state of {@link #useSWTThread}. Otherwise this always returns true because
-    * the threading model is user defined.
-    * <p>
-    * FIXME: Redundant .. remove! Merge isRenderThread, runInGLThread and runInDesignatedGLThread
-    *
-    * @return true if the calling thread is the correct thread to execute OpenGL calls in, false otherwise.
-    */
-   protected boolean isRenderThread() {
-      if (Threading.isSingleThreaded()) {
-         if (ThreadingImpl.getMode() != ThreadingImpl.Mode.ST_WORKER) {
-            final Display display = getDisplay();
-            return display != null && display.getThread() == Thread.currentThread();
-         }
-         return Threading.isOpenGLThread();
-      }
-      /*
-       * For multi-threaded rendering, the render thread is not defined...
-       */
-      return true;
-   }
-
-   /**
-    * Runs the specified action in the designated OpenGL thread. If the current thread is designated, then the
-    * syncAction is run synchronously, otherwise the asyncAction is dispatched to the appropriate worker thread.
-    *
-    * @param asyncAction
-    *           The non-null action to dispatch to an OpenGL worker thread. This action should not assume that a
-    *           GLContext is current when invoked.
-    * @param syncAction
-    *           The non-null action to run synchronously if the current thread is designated to handle OpenGL calls.
-    *           This action may assume the GLContext is current.
-    * FIXME: Redundant .. remove! Merge isRenderThread, runInGLThread and runInDesignatedGLThread
+    * Runs the specified action in an SWT compatible thread, which is:
+    * <ul>
+    *   <li>Mac OSX
+    *   <ul>
+    *     <!--li>AWT EDT: In case AWT is available, the AWT EDT is the OSX UI main thread</li-->
+    *     <li><i>Main Thread</i>: Run on OSX UI main thread.</li>
+    *   </ul></li>
+    *   <li>Linux, Windows, ..
+    *   <ul>
+    *     <li>Use {@link Threading#invokeOnOpenGLThread(boolean, Runnable)}</li>
+    *   </ul></li>  
+    * </ul>
+    * @see Platform#AWT_AVAILABLE
+    * @see Platform#getOSType()
     */
-   private void runInGLThread(final Runnable asyncAction, final Runnable syncAction) {
-      if (Threading.isSingleThreaded() && !isRenderThread()) {
-         /* Run in designated GL thread */
-         runInDesignatedGLThread(asyncAction);
+   private void runInGLThread(final Runnable action) {
+      if(Platform.OSType.MACOS == Platform.OS_TYPE) {
+          SWTAccessor.invoke(true, action);
       } else {
-         /* Run in current thread... */
-         helper.invokeGL(drawable, context, syncAction, initAction);
+          Threading.invokeOnOpenGLThread(true, action);
       }
    }
 
-   /**
-    * Dispatches the specified runnable to the appropriate OpenGL worker thread (either the SWT event dispatch thread,
-    * or the OpenGL worker thread depending on the state of {@link #useSWTThread}).
-    *
-    * @param makeCurrentAndRunAction
-    *           The non-null action to dispatch.
-    * FIXME: Redundant .. remove! Merge isRenderThread, runInGLThread and runInDesignatedGLThread
-    */
-   private void runInDesignatedGLThread(final Runnable makeCurrentAndRunAction) {
-      if (ThreadingImpl.getMode() != ThreadingImpl.Mode.ST_WORKER) {
-         final Display display = getDisplay();
-         assert display.getThread() != Thread.currentThread() : "Incorrect use of thread dispatching.";
-         display.syncExec(makeCurrentAndRunAction);
-      } else {
-         Threading.invokeOnOpenGLThread(true, makeCurrentAndRunAction);
-      }
-   }
-
-
    public static void main(final String[] args) {
        System.err.println(VersionUtil.getPlatformInfo());
        System.err.println(GlueGenVersion.getInstance());
diff --git a/src/nativewindow/classes/com/jogamp/nativewindow/swt/SWTAccessor.java b/src/nativewindow/classes/com/jogamp/nativewindow/swt/SWTAccessor.java
index f4309617b..735d85fb1 100644
--- a/src/nativewindow/classes/com/jogamp/nativewindow/swt/SWTAccessor.java
+++ b/src/nativewindow/classes/com/jogamp/nativewindow/swt/SWTAccessor.java
@@ -37,11 +37,13 @@ import org.eclipse.swt.widgets.Control;
 import javax.media.nativewindow.NativeWindowException;
 import javax.media.nativewindow.AbstractGraphicsDevice;
 import javax.media.nativewindow.NativeWindowFactory;
+
 import com.jogamp.common.util.ReflectionUtil;
 import com.jogamp.nativewindow.macosx.MacOSXGraphicsDevice;
 import com.jogamp.nativewindow.windows.WindowsGraphicsDevice;
 import com.jogamp.nativewindow.x11.X11GraphicsDevice;
 
+import jogamp.common.awt.AWTEDTExecutor;
 import jogamp.nativewindow.macosx.OSXUtil;
 
 public class SWTAccessor {
@@ -254,8 +256,25 @@ public class SWTAccessor {
         });
     }
     
+   /**
+    * Runs the specified action in an SWT compatible thread, which is:
+    * <ul>
+    *   <li>Mac OSX
+    *   <ul>
+    *     <!--li>AWT EDT: In case AWT is available, the AWT EDT is the OSX UI main thread</li-->
+    *     <li><i>Main Thread</i>: Run on OSX UI main thread.</li>
+    *   </ul></li>
+    *   <li>Linux, Windows, ..
+    *   <ul>
+    *     <li>Current thread.</li>
+    *   </ul></li>  
+    * </ul>
+    * @see Platform#AWT_AVAILABLE
+    * @see Platform#getOSType()
+    */
     public static void invoke(boolean wait, Runnable runnable) {
-        if(Platform.OS_TYPE == Platform.OSType.MACOS) {
+        if( Platform.OS_TYPE == Platform.OSType.MACOS ) {
+            // Use SWT main thread! Only reliable config w/ -XStartOnMainThread !?
             OSXUtil.RunOnMainThread(wait, runnable);
         } else {
             runnable.run();
diff --git a/src/nativewindow/classes/jogamp/nativewindow/macosx/OSXUtil.java b/src/nativewindow/classes/jogamp/nativewindow/macosx/OSXUtil.java
index 94f949ea3..2cd87f276 100644
--- a/src/nativewindow/classes/jogamp/nativewindow/macosx/OSXUtil.java
+++ b/src/nativewindow/classes/jogamp/nativewindow/macosx/OSXUtil.java
@@ -30,6 +30,7 @@ package jogamp.nativewindow.macosx;
 import javax.media.nativewindow.NativeWindowException;
 import javax.media.nativewindow.util.Point;
 
+import jogamp.common.awt.AWTEDTExecutor;
 import jogamp.nativewindow.Debug;
 import jogamp.nativewindow.NWJNILibLoader;
 
@@ -111,6 +112,27 @@ public class OSXUtil {
         return IsMainThread0();
     }
     
+    /***
+    private static boolean  isAWTEDTMainThreadInit = false;
+    private static boolean  isAWTEDTMainThread;
+    
+    public synchronized static boolean isAWTEDTMainThread() {
+        if(!isAWTEDTMainThreadInit) {
+            isAWTEDTMainThreadInit = true;
+            if(Platform.AWT_AVAILABLE) {
+                AWTEDTExecutor.singleton.invoke(true, new Runnable() {
+                   public void run() {
+                       isAWTEDTMainThread = IsMainThread();
+                       System.err.println("XXX: "+Thread.currentThread().getName()+" - isAWTEDTMainThread "+isAWTEDTMainThread);
+                   }
+                });
+            } else {
+                isAWTEDTMainThread = false;
+            }
+        }        
+        return isAWTEDTMainThread;
+    } */
+    
     private static native boolean initIDs0();
     private static native Object GetLocationOnScreen0(long windowOrView, int src_x, int src_y);
     private static native long CreateNSView0(int x, int y, int width, int height);
diff --git a/src/test/com/jogamp/opengl/test/junit/jogl/swt/TestSWTAccessor02GLn.java b/src/test/com/jogamp/opengl/test/junit/jogl/swt/TestSWTAccessor02GLn.java
index 0c350255e..2121205e2 100644
--- a/src/test/com/jogamp/opengl/test/junit/jogl/swt/TestSWTAccessor02GLn.java
+++ b/src/test/com/jogamp/opengl/test/junit/jogl/swt/TestSWTAccessor02GLn.java
@@ -85,26 +85,17 @@ public class TestSWTAccessor02GLn extends UITestCase {
 
     @Before
     public void init() {
-        final Display[] r = new Display[1];
-        final Shell[] s = new Shell[1];
         SWTAccessor.invoke(true, new Runnable() {
-           public void run() {
-               r[0] = new Display();
-               s[0] = new Shell();
-           }
-        });
-        display = r[0];
-        shell = s[0];        
-        Assert.assertNotNull( display );        
-        Assert.assertNotNull( shell );
-        
-        SWTAccessor.invoke(true, new Runnable() {
-           public void run() {
-            shell.setLayout( new FillLayout() );
-            composite = new Composite( shell, SWT.NONE );
-            Assert.assertNotNull( composite );
-            composite.setLayout( new FillLayout() );
-           }});
+            public void run() {        
+                display = new Display();
+                Assert.assertNotNull( display );
+                shell = new Shell( display );
+                Assert.assertNotNull( shell );
+                shell.setLayout( new FillLayout() );
+                composite = new Composite( shell, SWT.NONE );
+                composite.setLayout( new FillLayout() );
+                Assert.assertNotNull( composite );
+            }});        
     }
 
     @After
diff --git a/src/test/com/jogamp/opengl/test/junit/jogl/swt/TestSWTAccessor03AWTGLn.java b/src/test/com/jogamp/opengl/test/junit/jogl/swt/TestSWTAccessor03AWTGLn.java
index 966b39c57..ad8da8ad0 100644
--- a/src/test/com/jogamp/opengl/test/junit/jogl/swt/TestSWTAccessor03AWTGLn.java
+++ b/src/test/com/jogamp/opengl/test/junit/jogl/swt/TestSWTAccessor03AWTGLn.java
@@ -75,7 +75,11 @@ public class TestSWTAccessor03AWTGLn extends UITestCase {
 
     @BeforeClass
     public static void startup() {
-        System.out.println( "GLProfile " + GLProfile.glAvailabilityToString() );        
+        System.out.println( "GLProfile " + GLProfile.glAvailabilityToString() ); 
+        Frame f0 = new Frame("Test - AWT 1st");
+        f0.add(new java.awt.Label("AWT was here 1st"));
+        f0.pack();
+        f0.setVisible(true);
         if(!GLProfile.isAvailable(GLProfile.GL2)) {
             setTestSupported(false);
         }
diff --git a/src/test/com/jogamp/opengl/test/junit/jogl/swt/TestSWTEclipseGLCanvas01GLn.java b/src/test/com/jogamp/opengl/test/junit/jogl/swt/TestSWTEclipseGLCanvas01GLn.java
index f38d5c7dc..0bd47c980 100644
--- a/src/test/com/jogamp/opengl/test/junit/jogl/swt/TestSWTEclipseGLCanvas01GLn.java
+++ b/src/test/com/jogamp/opengl/test/junit/jogl/swt/TestSWTEclipseGLCanvas01GLn.java
@@ -53,6 +53,7 @@ import org.junit.BeforeClass;
 import org.junit.After;
 import org.junit.Test;
 
+import com.jogamp.nativewindow.swt.SWTAccessor;
 import com.jogamp.opengl.test.junit.jogl.demos.es1.OneTriangle;
 import com.jogamp.opengl.test.junit.util.UITestCase;
 
@@ -81,14 +82,17 @@ public class TestSWTEclipseGLCanvas01GLn extends UITestCase {
 
     @Before
     public void init() {
-        display = new Display();
-        Assert.assertNotNull( display );
-        shell = new Shell( display );
-        Assert.assertNotNull( shell );
-        shell.setLayout( new FillLayout() );
-        composite = new Composite( shell, SWT.NONE );
-        composite.setLayout( new FillLayout() );
-        Assert.assertNotNull( composite );
+        SWTAccessor.invoke(true, new Runnable() {
+            public void run() {        
+                display = new Display();
+                Assert.assertNotNull( display );
+                shell = new Shell( display );
+                Assert.assertNotNull( shell );
+                shell.setLayout( new FillLayout() );
+                composite = new Composite( shell, SWT.NONE );
+                composite.setLayout( new FillLayout() );
+                Assert.assertNotNull( composite );
+            }});
     }
 
     @After
@@ -97,9 +101,12 @@ public class TestSWTEclipseGLCanvas01GLn extends UITestCase {
         Assert.assertNotNull( shell );
         Assert.assertNotNull( composite );
         try {
-            composite.dispose();
-            shell.dispose();
-            display.dispose();
+            SWTAccessor.invoke(true, new Runnable() {
+               public void run() {
+                composite.dispose();
+                shell.dispose();
+                display.dispose();
+               }});
         }
         catch( Throwable throwable ) {
             throwable.printStackTrace();
diff --git a/src/test/com/jogamp/opengl/test/junit/jogl/swt/TestSWTJOGLGLCanvas01GLn.java b/src/test/com/jogamp/opengl/test/junit/jogl/swt/TestSWTJOGLGLCanvas01GLn.java
index addb14ce5..ba33aa31d 100644
--- a/src/test/com/jogamp/opengl/test/junit/jogl/swt/TestSWTJOGLGLCanvas01GLn.java
+++ b/src/test/com/jogamp/opengl/test/junit/jogl/swt/TestSWTJOGLGLCanvas01GLn.java
@@ -34,6 +34,8 @@ import javax.media.opengl.GLCapabilitiesImmutable;
 import javax.media.opengl.GLEventListener;
 import javax.media.opengl.GLProfile;
 
+import jogamp.nativewindow.macosx.OSXUtil;
+
 import org.eclipse.swt.SWT;
 import org.eclipse.swt.layout.FillLayout;
 import org.eclipse.swt.widgets.Composite;
@@ -47,6 +49,8 @@ import org.junit.BeforeClass;
 import org.junit.After;
 import org.junit.Test;
 
+import com.jogamp.common.os.Platform;
+import com.jogamp.nativewindow.swt.SWTAccessor;
 import com.jogamp.opengl.swt.GLCanvas;
 import com.jogamp.opengl.test.junit.jogl.demos.es1.OneTriangle;
 import com.jogamp.opengl.test.junit.util.UITestCase;
@@ -57,10 +61,10 @@ import com.jogamp.opengl.test.junit.util.UITestCase;
  * Uses JOGL's new SWT GLCanvas.
  * </p>
  * <p>
- * Holds AWT in it's test name, since our impl. still needs the AWT threading, 
- * see {@link GLCanvas}.
+ * Note that {@link SWTAccessor#invoke(boolean, Runnable)} is still used to comply w/ 
+ * SWT running on Mac OSX, i.e. to enforce UI action on the main thread.
  * </p>
- * @author Wade Walker, et.al.
+ * @author Wade Walker, et al.
  */
 public class TestSWTJOGLGLCanvas01GLn extends UITestCase {
 
@@ -76,18 +80,24 @@ public class TestSWTJOGLGLCanvas01GLn extends UITestCase {
     @BeforeClass
     public static void startup() {
         System.out.println( "GLProfile " + GLProfile.glAvailabilityToString() );
+        if( Platform.OS_TYPE == Platform.OSType.MACOS ) {
+            System.err.println("OSXUtil.isAWTEDTMainThread: "+ OSXUtil.isAWTEDTMainThread() );
+        }        
     }
 
     @Before
     public void init() {
-        display = new Display();
-        Assert.assertNotNull( display );
-        shell = new Shell( display );
-        Assert.assertNotNull( shell );
-        shell.setLayout( new FillLayout() );
-        composite = new Composite( shell, SWT.NONE );
-        composite.setLayout( new FillLayout() );
-        Assert.assertNotNull( composite );
+        SWTAccessor.invoke(true, new Runnable() {
+            public void run() {        
+                display = new Display();
+                Assert.assertNotNull( display );
+                shell = new Shell( display );
+                Assert.assertNotNull( shell );
+                shell.setLayout( new FillLayout() );
+                composite = new Composite( shell, SWT.NONE );
+                composite.setLayout( new FillLayout() );
+                Assert.assertNotNull( composite );
+            }});
     }
 
     @After
@@ -96,9 +106,12 @@ public class TestSWTJOGLGLCanvas01GLn extends UITestCase {
         Assert.assertNotNull( shell );
         Assert.assertNotNull( composite );
         try {
-            composite.dispose();
-            shell.dispose();
-            display.dispose();
+            SWTAccessor.invoke(true, new Runnable() {
+               public void run() {
+                composite.dispose();
+                shell.dispose();
+                display.dispose();
+               }});
         }
         catch( Throwable throwable ) {
             throwable.printStackTrace();
@@ -118,14 +131,19 @@ public class TestSWTJOGLGLCanvas01GLn extends UITestCase {
         Assert.assertNotNull( canvas );
 
         canvas.addGLEventListener(new GLEventListener() {
-           public void init(final GLAutoDrawable drawable) { }
+           public void init(final GLAutoDrawable drawable) { 
+               System.err.println(Thread.currentThread().getName()+" - SWT Canvas - GLEventListener - init()");
+           }
            public void reshape(final GLAutoDrawable drawable, final int x, final int y, final int width, final int height) {
-                OneTriangle.setup( drawable.getGL().getGL2(), width, height );
+               System.err.println(Thread.currentThread().getName()+" - SWT Canvas - GLEventListener - reshape()");
+               OneTriangle.setup( drawable.getGL().getGL2(), width, height );
            }                 
            public void display(final GLAutoDrawable drawable) {
                 OneTriangle.render( drawable.getGL().getGL2(), drawable.getWidth(), drawable.getHeight());
            }
-           public void dispose(final GLAutoDrawable drawable) {}         
+           public void dispose(final GLAutoDrawable drawable) {
+               System.err.println(Thread.currentThread().getName()+" - SWT Canvas - GLEventListener - dispose()");
+           }         
         });
        
         shell.setText( getClass().getName() );