src/macosx/native/sun/osxapp/ThreadUtilities.m

@@ -243,10 +243,18 @@
         [performer performSelectorOnMainThread:@selector(perform) withObject:nil waitUntilDone:wait modes:((inAWT) ? sAWTPerformModes : sPerformModes)]; // AWT_THREADING Safe (cover method)
         [performer release];
     }
 }
 
++ (void)performOnMainThreadWaiting:(BOOL)wait block:(void (^)())block {
+    if ([NSThread isMainThread] && wait == YES) {
+        block(); 
+    } else { 
+        [JNFRunLoop performOnMainThreadWaiting:wait withBlock:block]; 
+    }
+}
+
 @end
 
 
 void OSXAPP_SetJavaVM(JavaVM *vm)
 {