MacOSX: Fix shared ctx release [onMainThread]; Make GLContextShareSet lifecycle deterministic; Remove warnings

Fix shared ctx release [onMainThread]
  - Releasing the shared contexts caused a freeze of about 10s from one of the shared release operations.
    [NSOpenGLContext release]
  - Thorough triage concluded the workaround to release the shared ctx on the main thread.
  - Using enhanced GLContextShareSet, see below

Make GLContextShareSet lifecycle deterministic
  - Programmatically control the lifecycle of tracked shared ctx allows us using 'hard' references.
  - Features queries for isShared() and ofc unregister a share set if all are destroyed.

Remove warnings
  - MacOSXWindowSystemInterface.m used 'long', where 'GLint' was requested.

1 files changed, 7 insertions, 4 deletions

diff --git a/src/jogl/classes/jogamp/opengl/macosx/cgl/MacOSXOnscreenCGLContext.java b/src/jogl/classes/jogamp/opengl/macosx/cgl/MacOSXOnscreenCGLContext.java
index 393bd398b..b387c28c8 100644
--- a/src/jogl/classes/jogamp/opengl/macosx/cgl/MacOSXOnscreenCGLContext.java
+++ b/src/jogl/classes/jogamp/opengl/macosx/cgl/MacOSXOnscreenCGLContext.java
@@ -39,8 +39,8 @@
 
 package jogamp.opengl.macosx.cgl;
 
-
-import javax.media.opengl.*;
+import javax.media.opengl.GLContext;
+import javax.media.opengl.GLException;
 
 public class MacOSXOnscreenCGLContext extends MacOSXCGLContext {
 
@@ -82,7 +82,10 @@ public class MacOSXOnscreenCGLContext extends MacOSXCGLContext {
   @Override
   protected boolean createImpl() {
     boolean res = create(false, false);
-    if(res && isNSContext) {
+    if(!isNSContext) {
+        throw new InternalError("XXX0");
+    }
+    if(res) {
         if(0 != updateHandle) {
             throw new InternalError("XXX1");
         }
@@ -100,7 +103,7 @@ public class MacOSXOnscreenCGLContext extends MacOSXCGLContext {
         CGL.updateContextUnregister(updateHandle);
         updateHandle = 0;
     }
-    super.destroyImpl();
+    super.destroyImpl();    
   }
   
   @Override