simgrid::surf::signal<void(simgrid::surf::Host*)> Host::onDestruction;
simgrid::surf::signal<void(simgrid::surf::Host*, e_surf_resource_state_t, e_surf_resource_state_t)> Host::onStateChange;
simgrid::surf::signal<void(simgrid::surf::Host*)> Host::onDestruction;
simgrid::surf::signal<void(simgrid::surf::Host*, e_surf_resource_state_t, e_surf_resource_state_t)> Host::onStateChange;