+static xbt_main_func_t default_function = NULL;
+/**
+ * \brief Registers a #smx_process_code_t code as default value.
+ *
+ * Registers a code function as being the default value. This function will get used by SIMIX_launch_application() when there is no registered function of the requested name in.
+ * \param code the function
+ */
+void SIMIX_function_register_default(xbt_main_func_t code)
+{
+ xbt_assert0(simix_global,
+ "SIMIX_global_init has to be called before SIMIX_function_register.");
+
+ default_function = code;
+}
+