+typedef simgrid::s4u::Host simgrid_Host;
+typedef simgrid::surf::As surf_As;
+typedef simgrid::surf::Cpu surf_Cpu;
+typedef simgrid::surf::NetCard surf_NetCard;
+typedef simgrid::surf::Link Link;
+typedef simgrid::surf::Resource surf_Resource;
+typedef simgrid::trace_mgr::future_evt_set sg_future_evt_set;