1 files changed, 31 insertions, 9 deletions
diff --git a/src/stateless/trex_stateless_api.h b/src/stateless/trex_stateless_api.h
index 6406a946..edd7b051 100644
--- a/src/stateless/trex_stateless_api.h
+++ b/src/stateless/trex_stateless_api.h
@@ -71,26 +71,48 @@ private:
  */
 class TrexStateless {
 public:
+
     /**
-     * create a T-Rex stateless object
-     * 
-     * @author imarom (31-Aug-15)
+     * configure the stateless object singelton 
+     * reconfiguration is not allowed
+     * an exception will be thrown
+     */
+    static void configure(uint8_t port_count);
+
+    /**
+     * singleton public get instance
      * 
-     * @param port_count 
      */
-    TrexStateless(uint8_t port_count);
-    ~TrexStateless();
+    static TrexStateless& get_instance() {
+        TrexStateless& instance = get_instance_internal();
+
+        if (!instance.m_is_configured) {
+            throw TrexException("object is not configured");
+        }
+
+        return instance;
+    }
 
     TrexStatelessPort *get_port_by_id(uint8_t port_id);
     uint8_t            get_port_count();
 
 protected:
+    TrexStateless();
+    ~TrexStateless();
+
+    static TrexStateless& get_instance_internal () {
+        static TrexStateless instance;
+        return instance;
+    }
+
+     /* c++ 2011 style singleton */
+    TrexStateless(TrexStateless const&)      = delete;  
+    void operator=(TrexStateless const&)     = delete;
+
+    bool                m_is_configured;
     TrexStatelessPort  **m_ports;
     uint8_t             m_port_count;
 };
 
-/****** HACK *******/
-TrexStateless *get_trex_stateless();
-
 #endif /* __TREX_STATELESS_API_H__ */