+ As::As(const char*name)
+ : name_(xbt_strdup(name))
+ {}
+ As::~As()
+ {
+ xbt_dict_cursor_t cursor = NULL;
+ char *key;
+ AS_t elem;
+ xbt_dict_foreach(children_, cursor, key, elem) {
+ delete (As*)elem;
+ }
+
+
+ xbt_dict_free(&children_);
+ xbt_dynar_free(&vertices_);
+ xbt_dynar_free(&upDownLinks);
+ for (auto &kv : bypassRoutes_)
+ delete kv.second;
+ xbt_free(name_);
+ delete netcard_;
+ }
+ void As::Seal()
+ {
+ sealed_ = true;
+ }
+
+ /** @brief Get the common ancestor and its first childs in each line leading to src and dst */
+ static void find_common_ancestors(NetCard *src, NetCard *dst,
+ /* OUT */ As **common_ancestor, As **src_ancestor, As **dst_ancestor)
+ {
+ #define ROUTING_HIERARCHY_MAXDEPTH 32 /* 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_) {
+ xbt_assert(index_src < ROUTING_HIERARCHY_MAXDEPTH, "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_) {
+ xbt_assert(index_dst < ROUTING_HIERARCHY_MAXDEPTH,"ROUTING_HIERARCHY_MAXDEPTH should be increased for path_dst");
+ path_dst[index_dst++] = current;
+ }
+
+ /* (3) find the common father.
+ * Before that, index_src and index_dst may be different, they both point to NULL in path_src/path_dst
+ * So we move them down simultaneously as long as they point to the same content.
+ */
+ 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) if we did not find a difference (index_src or index_dst went to 0), both elements are in the same AS */
+ if (current_src == current_dst)
+ father = current_src;
+ else // we found a difference
+ father = path_src[index_src + 1];
+
+ /* (5) result generation */
+ *common_ancestor = father; /* the common father of src and dst */
+ *src_ancestor = current_src; /* the first different father of src */
+ *dst_ancestor = current_dst; /* the first different father of dst */
+ #undef ROUTING_HIERARCHY_MAXDEPTH
+ }
+
+
+ xbt_dynar_t As::getOneLinkRoutes() {
+ return NULL;
+ }
+
+ int As::addComponent(NetCard *elm) {
+ xbt_dynar_push_as(vertices_, NetCard*, elm);
+ return xbt_dynar_length(vertices_)-1;
+ }
+
+ void As::addRoute(sg_platf_route_cbarg_t /*route*/){
+ xbt_die("AS %s does not accept new routes (wrong class).",name_);
+ }
+
+ /* PRECONDITION: this is the common ancestor of src and dst */
+ std::vector<Link*> *As::getBypassRoute(NetCard *src, NetCard *dst)
+ {
+ // If never set a bypass route return NULL without any further computations
+ XBT_DEBUG("generic_get_bypassroute from %s to %s", src->name(), dst->name());
+ if (bypassRoutes_.empty())
+ return nullptr;
+
+ std::vector<Link*> *bypassedRoute = nullptr;
+
+ if(dst->containingAS() == this && src->containingAS() == this ){
+ char *route_name = bprintf("%s#%s", src->name(), dst->name());
+ if (bypassRoutes_.find(route_name) != bypassRoutes_.end()) {
+ bypassedRoute = bypassRoutes_.at(route_name);
+ XBT_DEBUG("Found a bypass route with %zu links",bypassedRoute->size());
+ }
+ free(route_name);
+ return bypassedRoute;
+ }
+
+ int index_src, index_dst;
+ As **current_src = NULL;
+ As **current_dst = NULL;
+
+ As *src_as = src->containingAS();
+ As *dst_as = dst->containingAS();
+
+ /* (2) find the path to the root routing component */
+ xbt_dynar_t path_src = xbt_dynar_new(sizeof(As*), NULL);
+ As *current = src_as;
+ while (current != NULL) {
+ xbt_dynar_push(path_src, ¤t);
+ current = current->father_;
+ }
+ xbt_dynar_t path_dst = xbt_dynar_new(sizeof(As*), NULL);
+ current = dst_as;
+ while (current != NULL) {
+ xbt_dynar_push(path_dst, ¤t);
+ current = current->father_;
+ }
+
+ /* (3) find the common father */
+ index_src = path_src->used - 1;
+ index_dst = path_dst->used - 1;
+ current_src = (As **) xbt_dynar_get_ptr(path_src, index_src);
+ current_dst = (As **) xbt_dynar_get_ptr(path_dst, index_dst);
+ while (index_src >= 0 && index_dst >= 0 && *current_src == *current_dst) {
+ xbt_dynar_pop_ptr(path_src);
+ xbt_dynar_pop_ptr(path_dst);
+ index_src--;
+ index_dst--;
+ current_src = (As **) xbt_dynar_get_ptr(path_src, index_src);
+ current_dst = (As **) xbt_dynar_get_ptr(path_dst, index_dst);
+ }
+
+ int max_index_src = path_src->used - 1;
+ int max_index_dst = path_dst->used - 1;
+
+ int max_index = std::max(max_index_src, max_index_dst);
+
+ for (int max = 0; max <= max_index; max++) {
+ for (int i = 0; i < max; i++) {
+ if (i <= max_index_src && max <= max_index_dst) {
+ char *route_name = bprintf("%s#%s",
+ (*(As **) (xbt_dynar_get_ptr(path_src, i)))->name_,
+ (*(As **) (xbt_dynar_get_ptr(path_dst, max)))->name_);
+ if (bypassRoutes_.find(route_name) != bypassRoutes_.end())
+ bypassedRoute = bypassRoutes_.at(route_name);
+ xbt_free(route_name);
+ }
+ if (bypassedRoute)
+ break;
+ if (max <= max_index_src && i <= max_index_dst) {
+ char *route_name = bprintf("%s#%s",
+ (*(As **) (xbt_dynar_get_ptr(path_src, max)))->name_,
+ (*(As **) (xbt_dynar_get_ptr(path_dst, i)))->name_);
+ if (bypassRoutes_.find(route_name) != bypassRoutes_.end())
+ bypassedRoute = bypassRoutes_.at(route_name);
+ xbt_free(route_name);
+ }
+ if (bypassedRoute)
+ break;
+ }
+
+ if (bypassedRoute)
+ break;
+
+ if (max <= max_index_src && max <= max_index_dst) {
+ char *route_name = bprintf("%s#%s",
+ (*(As **) (xbt_dynar_get_ptr(path_src, max)))->name_,
+ (*(As **) (xbt_dynar_get_ptr(path_dst, max)))->name_);
+
+ if (bypassRoutes_.find(route_name) != bypassRoutes_.end())
+ bypassedRoute = bypassRoutes_.at(route_name);
+ xbt_free(route_name);
+ }
+ if (bypassedRoute)
+ break;
+ }
+
+ xbt_dynar_free(&path_src);
+ xbt_dynar_free(&path_dst);
+
+ return bypassedRoute;
+ }
+
+ void As::addBypassRoute(sg_platf_route_cbarg_t e_route){
+ const char *src = e_route->src;
+ const char *dst = e_route->dst;
+
+ char *route_name = bprintf("%s#%s", src, dst);
+
+ /* Argument validity checks */
+ if (e_route->gw_dst) {
+ XBT_DEBUG("Load bypassASroute from %s@%s to %s@%s",
+ src, e_route->gw_src->name(), dst, e_route->gw_dst->name());
+ xbt_assert(!e_route->link_list->empty(), "Bypass route between %s@%s and %s@%s cannot be empty.",
+ src, e_route->gw_src->name(), dst, e_route->gw_dst->name());
+ xbt_assert(bypassRoutes_.find(route_name) == bypassRoutes_.end(), "The bypass route between %s@%s and %s@%s already exists.",
+ src, e_route->gw_src->name(), dst, e_route->gw_dst->name());
+ } else {
+ XBT_DEBUG("Load bypassRoute from %s to %s", src, dst);
+ xbt_assert(!e_route->link_list->empty(), "Bypass route between %s and %s cannot be empty.", src, dst);
+ xbt_assert(bypassRoutes_.find(route_name) == bypassRoutes_.end(), "The bypass route between %s and %s already exists.", src, dst);
+ }
+
+ /* Build a copy that will be stored in the dict */
+ std::vector<Link*> *newRoute = new std::vector<Link*>();
+ for (auto link: *e_route->link_list)
+ newRoute->push_back(link);
+
+ /* Store it */
+ bypassRoutes_.insert({route_name, newRoute});
+ xbt_free(route_name);
+ }
+
+}} // namespace simgrid::surf