-/**
- * \brief Make a new routing component to the platform
- *
- * Add a new autonomous system to the platform. Any elements (such as host,
- * router or sub-AS) added after this call and before the corresponding call
- * to sg_platf_new_AS_close() will be added to this AS.
- *
- * Once this function was called, the configuration concerning the used
- * models cannot be changed anymore.
- *
- * @param AS_id name of this autonomous system. Must be unique in the platform
- * @param wanted_routing_type one of Full, Floyd, Dijkstra or similar. Full list in the variable routing_models, in src/surf/surf_routing.c
- */
-void routing_AS_begin(sg_platf_AS_cbarg_t AS)
-{
- XBT_DEBUG("routing_AS_begin");
-
- xbt_assert(nullptr == xbt_lib_get_or_null(as_router_lib, AS->id, ROUTING_ASR_LEVEL),
- "Refusing to create a second AS called \"%s\".", AS->id);
-
- _sg_cfg_init_status = 2; /* HACK: direct access to the global controlling the level of configuration to prevent
- * any further config now that we created some real content */
-
-
- /* search the routing model */
- simgrid::surf::As *new_as = NULL;
- switch(AS->routing){
- case A_surfxml_AS_routing_Cluster: new_as = new simgrid::surf::AsCluster(AS->id); break;
- case A_surfxml_AS_routing_ClusterTorus: new_as = new simgrid::surf::AsClusterTorus(AS->id); break;
- case A_surfxml_AS_routing_ClusterFatTree: new_as = new simgrid::surf::AsClusterFatTree(AS->id); break;
- case A_surfxml_AS_routing_Dijkstra: new_as = new simgrid::surf::AsDijkstra(AS->id, 0); break;
- case A_surfxml_AS_routing_DijkstraCache: new_as = new simgrid::surf::AsDijkstra(AS->id, 1); break;
- case A_surfxml_AS_routing_Floyd: new_as = new simgrid::surf::AsFloyd(AS->id); break;
- case A_surfxml_AS_routing_Full: new_as = new simgrid::surf::AsFull(AS->id); break;
- case A_surfxml_AS_routing_None: new_as = new simgrid::surf::AsNone(AS->id); break;
- case A_surfxml_AS_routing_Vivaldi: new_as = new simgrid::surf::AsVivaldi(AS->id); break;
- default: xbt_die("Not a valid model!"); break;
- }
-
- /* make a new routing component */
- simgrid::surf::NetCard *netcard = new simgrid::surf::NetCardImpl(new_as->name_, SURF_NETWORK_ELEMENT_AS, current_routing);
-
- if (current_routing == NULL && routing_platf->root_ == NULL) {
- /* it is the first one */
- new_as->father_ = NULL;
- routing_platf->root_ = new_as;
- netcard->setId(-1);
- } else if (current_routing != NULL && routing_platf->root_ != NULL) {
-
- xbt_assert(!xbt_dict_get_or_null(current_routing->sons_, AS->id),
- "The AS \"%s\" already exists", AS->id);
- /* it is a part of the tree */
- new_as->father_ = current_routing;
- /* set the father behavior */
- if (current_routing->hierarchy_ == SURF_ROUTING_NULL)
- current_routing->hierarchy_ = SURF_ROUTING_RECURSIVE;
- /* add to the sons dictionary */
- xbt_dict_set(current_routing->sons_, AS->id, (void *) new_as, NULL);
- /* add to the father element list */
- netcard->setId(current_routing->addComponent(netcard));
- } else {
- THROWF(arg_error, 0, "All defined components must belong to a AS");
- }
-
- xbt_lib_set(as_router_lib, netcard->name(), ROUTING_ASR_LEVEL, (void *) netcard);
- XBT_DEBUG("Having set name '%s' id '%d'", new_as->name_, netcard->id());
-
- /* set the new current component of the tree */
- current_routing = new_as;
- current_routing->netcard_ = netcard;
-
- simgrid::surf::netcardCreatedCallbacks(netcard);
- simgrid::surf::asCreatedCallbacks(new_as);
-}
-
-/**
- * \brief Specify that the current description of AS is finished
- *
- * Once you've declared all the content of your AS, you have to close
- * it with this call. Your AS is not usable until you call this function.
- */
-void routing_AS_end()
-{
- xbt_assert(current_routing, "Cannot seal the current AS: none under construction");
- current_routing->Seal();
- current_routing = current_routing->father_;
-}
-
-/**
- * \brief Get the AS father and the first elements of the chain
- *
- * \param src the source host name
- * \param dst the destination host name
- *
- * Get the common father of the to processing units, and the first different
- * father in the chain
- */
-static void elements_father(sg_netcard_t src, sg_netcard_t dst,
- AS_t * res_father, AS_t * res_src, AS_t * res_dst)
-{
- xbt_assert(src && dst, "bad parameters for \"elements_father\" method");
-#define ROUTING_HIERARCHY_MAXDEPTH 16 /* increase if it is not enough */
- simgrid::surf::As *path_src[ROUTING_HIERARCHY_MAXDEPTH];
- simgrid::surf::As *path_dst[ROUTING_HIERARCHY_MAXDEPTH];
- int index_src = 0;
- int index_dst = 0;
- simgrid::surf::As *current_src;
- simgrid::surf::As *current_dst;
- simgrid::surf::As *father;
-
- /* (1) find the path to root of src and dst*/
- simgrid::surf::As *src_as = src->containingAS();
- simgrid::surf::As *dst_as = dst->containingAS();
-
- xbt_assert(src_as, "Host %s must be in an AS", src->name());
- xbt_assert(dst_as, "Host %s must be in an AS", dst->name());
-
- /* (2) find the path to the root routing component */
- for (simgrid::surf::As *current = src_as; current != NULL; current = current->father_) {
- if (index_src >= ROUTING_HIERARCHY_MAXDEPTH)
- xbt_die("ROUTING_HIERARCHY_MAXDEPTH should be increased for element %s", src->name());
- path_src[index_src++] = current;
- }
- for (simgrid::surf::As *current = dst_as; current != NULL; current = current->father_) {
- if (index_dst >= ROUTING_HIERARCHY_MAXDEPTH)
- xbt_die("ROUTING_HIERARCHY_MAXDEPTH should be increased for path_dst");
- path_dst[index_dst++] = current;
- }
-
- /* (3) find the common father */
- do {
- current_src = path_src[--index_src];
- current_dst = path_dst[--index_dst];
- } while (index_src > 0 && index_dst > 0 && current_src == current_dst);
-
- /* (4) they are not in the same routing component, make the path */
- if (current_src == current_dst)
- father = current_src;
- else
- father = path_src[index_src + 1];
-
- /* (5) result generation */
- *res_father = father; /* first the common father of src and dst */
- *res_src = current_src; /* second the first different father of src */
- *res_dst = current_dst; /* three the first different father of dst */
-
-#undef ROUTING_HIERARCHY_MAXDEPTH
-}
-
-/**
- * \brief Recursive function for get_route_and_latency
- *
- * \param src the source host name
- * \param dst the destination host name
- * \param *route the route where the links are stored. It is either NULL or a ready to use dynar
- * \param *latency the latency, if needed
- */
-static void _get_route_and_latency(simgrid::surf::NetCard *src, simgrid::surf::NetCard *dst,
- std::vector<Link*> * links, double *latency)
-{
- s_sg_platf_route_cbarg_t route = SG_PLATF_ROUTE_INITIALIZER;
- memset(&route,0,sizeof(route));
-
- xbt_assert(src && dst, "bad parameters for \"_get_route_latency\" method");
- XBT_DEBUG("Solve route/latency \"%s\" to \"%s\"", src->name(), dst->name());
-
- /* Find how src and dst are interconnected */
- simgrid::surf::As *common_father, *src_father, *dst_father;
- elements_father(src, dst, &common_father, &src_father, &dst_father);
- XBT_DEBUG("elements_father: common father '%s' src_father '%s' dst_father '%s'",
- common_father->name_, src_father->name_, dst_father->name_);
-
- /* Check whether a direct bypass is defined. If so, use it and bail out */
- std::vector<Link*> *bypassed_route = common_father->getBypassRoute(src, dst);
- if (nullptr != bypassed_route) {
- for (Link *link : *bypassed_route) {
- links->push_back(link);
- if (latency)
- *latency += link->getLatency();
- }
- return;
- }
-
- /* If src and dst are in the same AS, life is good */
- if (src_father == dst_father) { /* SURF_ROUTING_BASE */
- route.link_list = links;
- common_father->getRouteAndLatency(src, dst, &route, latency);
- return;
- }
-
- /* Not in the same AS, no bypass. We'll have to find our path between the ASes recursively*/
-
- route.link_list = new std::vector<Link*>();
-
- common_father->getRouteAndLatency(src_father->netcard_, dst_father->netcard_, &route, latency);
- xbt_assert((route.gw_src != NULL) && (route.gw_dst != NULL),
- "bad gateways for route from \"%s\" to \"%s\"", src->name(), dst->name());
-
- /* If source gateway is not our source, we have to recursively find our way up to this point */
- if (src != route.gw_src)
- _get_route_and_latency(src, route.gw_src, links, latency);
- for (auto link: *route.link_list)
- links->push_back(link);
-
- /* If dest gateway is not our destination, we have to recursively find our way from this point */
- if (route.gw_dst != dst)
- _get_route_and_latency(route.gw_dst, dst, links, latency);
-
-}
-