Make accessible from API (#995)

Author: lochel

src/OMSimulatorLib/System.cpp

@@ -1899,6 +1899,12 @@ oms_status_enu_t oms::System::getReal(const ComRef& cref, double& value)
     }
   }
 
+  if (cref == "$wallTime")
+  {
+    value = clock.getElapsedWallTime();
+    return oms_status_ok;
+  }
+
   return logError_UnknownSignal(getFullCref() + cref);
 }
 

src/OMSimulatorLib/SystemWC.cpp

@@ -700,7 +700,7 @@ oms_status_enu_t oms::SystemWC::doStep()
       for (const auto& pair : stepSizeConfiguration.getDynamicThresholds())
       {
         double sigval;
-        this -> getReal(pair.first,sigval);
+        this->getReal(pair.first,sigval);
         for (const auto& interval:pair.second)
         {
           double lower;