--- /dev/null
+/* Copyright (c) 2013-2016. The SimGrid Team. All rights reserved. */
+
+/* This program is free software; you can redistribute it and/or modify it
+ * under the terms of the license (GNU LGPL) which comes with this package. */
+
+#include <xbt/dynar.h>
+
+#include <simgrid/s4u/host.hpp>
+
+#include "src/kernel/routing/AsVivaldi.hpp"
+#include "src/surf/network_interface.hpp"
+
+XBT_LOG_NEW_DEFAULT_SUBCATEGORY(surf_route_vivaldi, surf, "Routing part of surf");
+
+namespace simgrid {
+namespace routing {
+ static inline double euclidean_dist_comp(int index, xbt_dynar_t src, xbt_dynar_t dst) {
+ double src_coord = xbt_dynar_get_as(src, index, double);
+ double dst_coord = xbt_dynar_get_as(dst, index, double);
+
+ return (src_coord-dst_coord)*(src_coord-dst_coord);
+ }
+
+ static xbt_dynar_t getCoordsFromNetcard(NetCard *nc)
+ {
+ xbt_dynar_t res = nullptr;
+ char *tmp_name;
+
+ if(nc->isHost()){
+ tmp_name = bprintf("peer_%s", nc->name());
+ simgrid::s4u::Host *host = simgrid::s4u::Host::by_name_or_null(tmp_name);
+ if (host == nullptr)
+ host = simgrid::s4u::Host::by_name_or_null(nc->name());
+ if (host != nullptr)
+ res = (xbt_dynar_t) host->extension(COORD_HOST_LEVEL);
+ }
+ else if(nc->isRouter() || nc->isAS()){
+ tmp_name = bprintf("router_%s", nc->name());
+ res = (xbt_dynar_t) xbt_lib_get_or_null(as_router_lib, tmp_name, COORD_ASR_LEVEL);
+ }
+ else{
+ THROW_IMPOSSIBLE;
+ }
+
+ xbt_assert(res,"No coordinate found for element '%s'",tmp_name);
+ free(tmp_name);
+
+ return res;
+ }
+ AsVivaldi::AsVivaldi(const char *name)
+ : AsCluster(name)
+ {}
+
+AsVivaldi::~AsVivaldi() {}
+
+void AsVivaldi::getRouteAndLatency(NetCard *src, NetCard *dst, sg_platf_route_cbarg_t route, double *lat)
+{
+ XBT_DEBUG("vivaldi_get_route_and_latency from '%s'[%d] '%s'[%d]", src->name(), src->id(), dst->name(), dst->id());
+
+ if(src->isAS()) {
+ char *src_name = bprintf("router_%s",src->name());
+ char *dst_name = bprintf("router_%s",dst->name());
+ route->gw_src = (sg_netcard_t) xbt_lib_get_or_null(as_router_lib, src_name, ROUTING_ASR_LEVEL);
+ route->gw_dst = (sg_netcard_t) xbt_lib_get_or_null(as_router_lib, dst_name, ROUTING_ASR_LEVEL);
+ xbt_free(src_name);
+ xbt_free(dst_name);
+ }
+
+ /* Retrieve the private links */
+ if ((int)xbt_dynar_length(privateLinks_) > src->id()) {
+ s_surf_parsing_link_up_down_t info = xbt_dynar_get_as(privateLinks_, src->id(), s_surf_parsing_link_up_down_t);
+ if(info.linkUp) {
+ route->link_list->push_back(info.linkUp);
+ if (lat)
+ *lat += info.linkUp->getLatency();
+ }
+ }
+ if ((int)xbt_dynar_length(privateLinks_)>dst->id()) {
+ s_surf_parsing_link_up_down_t info = xbt_dynar_get_as(privateLinks_, dst->id(), s_surf_parsing_link_up_down_t);
+ if(info.linkDown) {
+ route->link_list->push_back(info.linkDown);
+ if (lat)
+ *lat += info.linkDown->getLatency();
+ }
+ }
+
+ /* Compute the extra latency due to the euclidean distance if needed */
+ if (lat){
+ xbt_dynar_t srcCoords = getCoordsFromNetcard(src);
+ xbt_dynar_t dstCoords = getCoordsFromNetcard(dst);
+
+ double euclidean_dist = sqrt (euclidean_dist_comp(0,srcCoords,dstCoords)+euclidean_dist_comp(1,srcCoords,dstCoords))
+ + fabs(xbt_dynar_get_as(srcCoords, 2, double))+fabs(xbt_dynar_get_as(dstCoords, 2, double));
+
+ XBT_DEBUG("Updating latency %f += %f",*lat,euclidean_dist);
+ *lat += euclidean_dist / 1000.0; //From .ms to .s
+ }
+}
+
+}
+}