if(!resource_list) resource_list = xbt_dynar_new(sizeof(surf_resource_private_t), NULL);
if(!history) history = tmgr_history_new();
if(!maxmin_system) maxmin_system = lmm_system_new();
if(!resource_list) resource_list = xbt_dynar_new(sizeof(surf_resource_private_t), NULL);
if(!history) history = tmgr_history_new();
if(!maxmin_system) maxmin_system = lmm_system_new();