+extern void assert_is_main_thread (const char *, int);
+extern void assert_is_wui_thread (const char *, int);
+
+#define ASSERT_IS_MAIN_THREAD() assert_is_main_thread(__FILE__,__LINE__)
+#define ASSERT_IS_WUI_THREAD() assert_is_wui_thread(__FILE__,__LINE__)
+