+ void setTraceRef(sllnode<ModelAction *> *ref) { trace_ref = ref; }
+ void setThrdMapRef(sllnode<ModelAction *> *ref) { thrdmap_ref = ref; }
+ void setActionRef(sllnode<ModelAction *> *ref) { action_ref = ref; }
+ sllnode<ModelAction *> * getTraceRef() { return trace_ref; }
+ sllnode<ModelAction *> * getThrdMapRef() { return thrdmap_ref; }
+ sllnode<ModelAction *> * getActionRef() { return action_ref; }
+ SNAPSHOTALLOC