refs #306, refs #282 Thread safety of readers

In the same step:
* renaming private slots ps_xy
* doxygen
* removed outdated debug messages

src/blackcore/blackcorefreefunctions.h

@@ -6,13 +6,17 @@
 #ifndef BLACKCORE_FREEFUNCTIONS_H
 #define BLACKCORE_FREEFUNCTIONS_H
 
+#include <QObject>
+
 namespace BlackCore
 {
-    /*!
-     * Register all relevant metadata in BlackCore
-     */
+    //! Register all relevant metadata in BlackCore
     void registerMetadata();
 
+    //! Is the current thread the one created the object
+    //! \remarks can be used as ASSERT check for threaded objects
+    bool isCurrentThreadCreatingThread(QObject *toBeTested);
+
 } // BlackCore
 
 #endif // guard