if( SIMIX_host_get_state(host) == SURF_RESOURCE_OFF
&& !xbt_dict_get_or_null(watched_hosts_lib,sg_host_name(host))){
xbt_dict_set(watched_hosts_lib,sg_host_name(host),host,NULL);
if( SIMIX_host_get_state(host) == SURF_RESOURCE_OFF
&& !xbt_dict_get_or_null(watched_hosts_lib,sg_host_name(host))){
xbt_dict_set(watched_hosts_lib,sg_host_name(host),host,NULL);