src/surf/sg_platf.cpp

   1 /* Copyright (c) 2006-2021. The SimGrid Team. All rights reserved.          */
   2
   3 /* This program is free software; you can redistribute it and/or modify it
   4  * under the terms of the license (GNU LGPL) which comes with this package. */
   5
   6 #include "simgrid/Exception.hpp"
   7 #include "simgrid/kernel/routing/ClusterZone.hpp"
   8 #include "simgrid/kernel/routing/DijkstraZone.hpp"
   9 #include "simgrid/kernel/routing/DragonflyZone.hpp"
  10 #include "simgrid/kernel/routing/EmptyZone.hpp"
  11 #include "simgrid/kernel/routing/FatTreeZone.hpp"
  12 #include "simgrid/kernel/routing/FloydZone.hpp"
  13 #include "simgrid/kernel/routing/FullZone.hpp"
  14 #include "simgrid/kernel/routing/NetPoint.hpp"
  15 #include "simgrid/kernel/routing/NetZoneImpl.hpp"
  16 #include "simgrid/kernel/routing/TorusZone.hpp"
  17 #include "simgrid/kernel/routing/VivaldiZone.hpp"
  18 #include "simgrid/kernel/routing/WifiZone.hpp"
  19 #include "simgrid/s4u/Engine.hpp"
  20 #include "src/include/simgrid/sg_config.hpp"
  21 #include "src/include/surf/surf.hpp"
  22 #include "src/kernel/EngineImpl.hpp"
  23 #include "src/kernel/resource/DiskImpl.hpp"
  24 #include "src/kernel/resource/profile/Profile.hpp"
  25 #include "src/simix/smx_private.hpp"
  26 #include "src/surf/HostImpl.hpp"
  27 #include "src/surf/xml/platf_private.hpp"
  28
  29 #include <string>
  30
  31 XBT_LOG_EXTERNAL_DEFAULT_CATEGORY(surf_parse);
  32
  33 namespace simgrid {
  34 namespace kernel {
  35 namespace routing {
  36 xbt::signal<void(ClusterCreationArgs const&)> on_cluster_creation;
  37 } // namespace routing
  38 } // namespace kernel
  39 } // namespace simgrid
  40
  41 /** The current NetZone in the parsing */
  42 static simgrid::kernel::routing::NetZoneImpl* current_routing = nullptr;
  43 static simgrid::kernel::routing::NetZoneImpl* routing_get_current()
  44 {
  45   return current_routing;
  46 }
  47
  48 /** Module management function: creates all internal data structures */
  49 void sg_platf_init()
  50 {
  51   // Do nothing: just for symmetry of user code
  52 }
  53
  54 /** Module management function: frees all internal data structures */
  55 void sg_platf_exit()
  56 {
  57   simgrid::kernel::routing::on_cluster_creation.disconnect_slots();
  58   simgrid::s4u::Engine::on_platform_created.disconnect_slots();
  59
  60   surf_parse_lex_destroy();
  61 }
  62
  63 /** @brief Add a host to the current NetZone */
  64 void sg_platf_new_host(const simgrid::kernel::routing::HostCreationArgs* args)
  65 {
  66   simgrid::s4u::Host* host = routing_get_current()->create_host(args->id, args->speed_per_pstate, args->core_amount);
  67
  68   if (args->properties) {
  69     host->set_properties(*args->properties);
  70     delete args->properties;
  71   }
  72
  73   host->get_impl()->set_disks(args->disks, host);
  74
  75   /* Change from the defaults */
  76   host->set_state_profile(args->state_trace)->set_speed_profile(args->speed_trace);
  77
  78   if (not args->coord.empty())
  79     new simgrid::kernel::routing::vivaldi::Coords(host->get_netpoint(), args->coord);
  80
  81   simgrid::s4u::Host::on_creation(*host); // notify the signal
  82
  83   /* When energy plugin is activated, changing the pstate requires to already have the HostEnergy extension whose
  84    * allocation is triggered by the on_creation signal. Then set_pstate must be called after the signal emition */
  85   if (args->pstate != 0)
  86     host->set_pstate(args->pstate);
  87 }
  88
  89 /** @brief Add a "router" to the network element list */
  90 simgrid::kernel::routing::NetPoint* sg_platf_new_router(const std::string& name, const char* coords)
  91 {
  92   if (current_routing->hierarchy_ == simgrid::kernel::routing::NetZoneImpl::RoutingMode::unset)
  93     current_routing->hierarchy_ = simgrid::kernel::routing::NetZoneImpl::RoutingMode::base;
  94   xbt_assert(nullptr == simgrid::s4u::Engine::get_instance()->netpoint_by_name_or_null(name),
  95              "Refusing to create a router named '%s': this name already describes a node.", name.c_str());
  96
  97   auto* netpoint = new simgrid::kernel::routing::NetPoint(name, simgrid::kernel::routing::NetPoint::Type::Router);
  98   netpoint->set_englobing_zone(current_routing);
  99   XBT_DEBUG("Router '%s' has the id %u", netpoint->get_cname(), netpoint->id());
 100
 101   if (coords && strcmp(coords, ""))
 102     new simgrid::kernel::routing::vivaldi::Coords(netpoint, coords);
 103
 104   return netpoint;
 105 }
 106
 107 static void sg_platf_new_link(const simgrid::kernel::routing::LinkCreationArgs* args, const std::string& link_name)
 108 {
 109   simgrid::s4u::Link* link = routing_get_current()->create_link(link_name, args->bandwidths, args->policy);
 110   if (args->properties)
 111     link->set_properties(*args->properties);
 112
 113   link->get_impl() // this call to get_impl saves some simcalls but can be removed
 114       ->set_state_profile(args->state_trace)
 115       ->set_latency_profile(args->latency_trace)
 116       ->set_bandwidth_profile(args->bandwidth_trace)
 117       ->set_latency(args->latency)
 118       ->seal();
 119 }
 120
 121 void sg_platf_new_link(const simgrid::kernel::routing::LinkCreationArgs* link)
 122 {
 123   if (link->policy == simgrid::s4u::Link::SharingPolicy::SPLITDUPLEX) {
 124     sg_platf_new_link(link, link->id + "_UP");
 125     sg_platf_new_link(link, link->id + "_DOWN");
 126   } else {
 127     sg_platf_new_link(link, link->id);
 128   }
 129   delete link->properties;
 130 }
 131
 132 void sg_platf_new_cluster(simgrid::kernel::routing::ClusterCreationArgs* cluster)
 133 {
 134   using simgrid::kernel::routing::ClusterZone;
 135   using simgrid::kernel::routing::DragonflyZone;
 136   using simgrid::kernel::routing::FatTreeZone;
 137   using simgrid::kernel::routing::TorusZone;
 138
 139   int rankId = 0;
 140
 141   // What an inventive way of initializing the NetZone that I have as ancestor :-(
 142   simgrid::kernel::routing::ZoneCreationArgs zone;
 143   zone.id = cluster->id;
 144   switch (cluster->topology) {
 145     case simgrid::kernel::routing::ClusterTopology::TORUS:
 146       zone.routing = "ClusterTorus";
 147       break;
 148     case simgrid::kernel::routing::ClusterTopology::DRAGONFLY:
 149       zone.routing = "ClusterDragonfly";
 150       break;
 151     case simgrid::kernel::routing::ClusterTopology::FAT_TREE:
 152       zone.routing = "ClusterFatTree";
 153       break;
 154     default:
 155       zone.routing = "Cluster";
 156       break;
 157   }
 158   sg_platf_new_Zone_begin(&zone);
 159   auto* current_zone = static_cast<ClusterZone*>(routing_get_current());
 160   current_zone->parse_specific_arguments(cluster);
 161   if (cluster->properties != nullptr)
 162     for (auto const& elm : *cluster->properties)
 163       current_zone->get_iface()->set_property(elm.first, elm.second);
 164
 165   if (cluster->loopback_bw > 0 || cluster->loopback_lat > 0) {
 166     current_zone->set_loopback();
 167   }
 168
 169   if (cluster->limiter_link > 0) {
 170     current_zone->set_limiter();
 171   }
 172
 173   for (int const& i : *cluster->radicals) {
 174     std::string host_id = std::string(cluster->prefix) + std::to_string(i) + cluster->suffix;
 175     std::string link_id = std::string(cluster->id) + "_link_" + std::to_string(i);
 176
 177     XBT_DEBUG("<host\tid=\"%s\"\tpower=\"%f\">", host_id.c_str(), cluster->speeds.front());
 178
 179     simgrid::kernel::routing::HostCreationArgs host;
 180     host.id = host_id;
 181     if ((cluster->properties != nullptr) && (not cluster->properties->empty())) {
 182       host.properties = new std::unordered_map<std::string, std::string>();
 183
 184       for (auto const& elm : *cluster->properties)
 185         host.properties->insert({elm.first, elm.second});
 186     }
 187
 188     host.speed_per_pstate = cluster->speeds;
 189     host.pstate           = 0;
 190     host.core_amount      = cluster->core_amount;
 191     host.coord            = "";
 192     sg_platf_new_host(&host);
 193     XBT_DEBUG("</host>");
 194
 195     XBT_DEBUG("<link\tid=\"%s\"\tbw=\"%f\"\tlat=\"%f\"/>", link_id.c_str(), cluster->bw, cluster->lat);
 196
 197     // All links are saved in a matrix;
 198     // every row describes a single node; every node may have multiple links.
 199     // the first column may store a link from x to x if p_has_loopback is set
 200     // the second column may store a limiter link if p_has_limiter is set
 201     // other columns are to store one or more link for the node
 202
 203     // add a loopback link
 204     const simgrid::s4u::Link* linkUp   = nullptr;
 205     const simgrid::s4u::Link* linkDown = nullptr;
 206     if (cluster->loopback_bw > 0 || cluster->loopback_lat > 0) {
 207       std::string tmp_link = link_id + "_loopback";
 208       XBT_DEBUG("<loopback\tid=\"%s\"\tbw=\"%f\"/>", tmp_link.c_str(), cluster->loopback_bw);
 209
 210       simgrid::kernel::routing::LinkCreationArgs link;
 211       link.id = tmp_link;
 212       link.bandwidths.push_back(cluster->loopback_bw);
 213       link.latency = cluster->loopback_lat;
 214       link.policy  = simgrid::s4u::Link::SharingPolicy::FATPIPE;
 215       sg_platf_new_link(&link);
 216       linkUp   = simgrid::s4u::Link::by_name_or_null(tmp_link);
 217       linkDown = simgrid::s4u::Link::by_name_or_null(tmp_link);
 218
 219       current_zone->add_private_link_at(current_zone->node_pos(rankId), {linkUp->get_impl(), linkDown->get_impl()});
 220     }
 221
 222     // add a limiter link (shared link to account for maximal bandwidth of the node)
 223     linkUp   = nullptr;
 224     linkDown = nullptr;
 225     if (cluster->limiter_link > 0) {
 226       std::string tmp_link = std::string(link_id) + "_limiter";
 227       XBT_DEBUG("<limiter\tid=\"%s\"\tbw=\"%f\"/>", tmp_link.c_str(), cluster->limiter_link);
 228
 229       simgrid::kernel::routing::LinkCreationArgs link;
 230       link.id = tmp_link;
 231       link.bandwidths.push_back(cluster->limiter_link);
 232       link.latency = 0;
 233       link.policy  = simgrid::s4u::Link::SharingPolicy::SHARED;
 234       sg_platf_new_link(&link);
 235       linkDown = simgrid::s4u::Link::by_name_or_null(tmp_link);
 236       linkUp   = linkDown;
 237       current_zone->add_private_link_at(current_zone->node_pos_with_loopback(rankId),
 238                                         {linkUp->get_impl(), linkDown->get_impl()});
 239     }
 240
 241     // call the cluster function that adds the others links
 242     if (cluster->topology == simgrid::kernel::routing::ClusterTopology::FAT_TREE) {
 243       static_cast<FatTreeZone*>(current_zone)->add_processing_node(i);
 244     } else {
 245       current_zone->create_links_for_node(cluster, i, rankId, current_zone->node_pos_with_loopback_limiter(rankId));
 246     }
 247     rankId++;
 248   }
 249   delete cluster->properties;
 250
 251   // Add a router.
 252   XBT_DEBUG(" ");
 253   XBT_DEBUG("<router id=\"%s\"/>", cluster->router_id.c_str());
 254   if (cluster->router_id.empty())
 255     cluster->router_id = std::string(cluster->prefix) + cluster->id + "_router" + cluster->suffix;
 256   current_zone->set_router(sg_platf_new_router(cluster->router_id, nullptr));
 257
 258   // Make the backbone
 259   if ((cluster->bb_bw > 0) || (cluster->bb_lat > 0)) {
 260     simgrid::kernel::routing::LinkCreationArgs link;
 261     link.id = std::string(cluster->id) + "_backbone";
 262     link.bandwidths.push_back(cluster->bb_bw);
 263     link.latency = cluster->bb_lat;
 264     link.policy  = cluster->bb_sharing_policy;
 265
 266     XBT_DEBUG("<link\tid=\"%s\" bw=\"%f\" lat=\"%f\"/>", link.id.c_str(), cluster->bb_bw, cluster->bb_lat);
 267     sg_platf_new_link(&link);
 268
 269     routing_cluster_add_backbone(simgrid::s4u::Link::by_name(link.id)->get_impl());
 270   }
 271
 272   XBT_DEBUG("</zone>");
 273   sg_platf_new_Zone_seal();
 274
 275   simgrid::kernel::routing::on_cluster_creation(*cluster);
 276   delete cluster->radicals;
 277 }
 278
 279 void routing_cluster_add_backbone(simgrid::kernel::resource::LinkImpl* bb)
 280 {
 281   auto* cluster = dynamic_cast<simgrid::kernel::routing::ClusterZone*>(current_routing);
 282
 283   xbt_assert(cluster, "Only hosts from Cluster can get a backbone.");
 284   xbt_assert(not cluster->has_backbone(), "Cluster %s already has a backbone link!", cluster->get_cname());
 285
 286   cluster->set_backbone(bb);
 287   XBT_DEBUG("Add a backbone to zone '%s'", current_routing->get_cname());
 288 }
 289
 290 void sg_platf_new_cabinet(const simgrid::kernel::routing::CabinetCreationArgs* cabinet)
 291 {
 292   for (int const& radical : *cabinet->radicals) {
 293     std::string hostname = cabinet->prefix + std::to_string(radical) + cabinet->suffix;
 294     simgrid::kernel::routing::HostCreationArgs host;
 295     host.pstate      = 0;
 296     host.core_amount = 1;
 297     host.id          = hostname;
 298     host.speed_per_pstate.push_back(cabinet->speed);
 299     sg_platf_new_host(&host);
 300
 301     simgrid::kernel::routing::LinkCreationArgs link;
 302     link.policy  = simgrid::s4u::Link::SharingPolicy::SPLITDUPLEX;
 303     link.latency = cabinet->lat;
 304     link.bandwidths.push_back(cabinet->bw);
 305     link.id = "link_" + hostname;
 306     sg_platf_new_link(&link);
 307
 308     simgrid::kernel::routing::HostLinkCreationArgs host_link;
 309     host_link.id        = hostname;
 310     host_link.link_up   = std::string("link_") + hostname + "_UP";
 311     host_link.link_down = std::string("link_") + hostname + "_DOWN";
 312     sg_platf_new_hostlink(&host_link);
 313   }
 314   delete cabinet->radicals;
 315 }
 316
 317 simgrid::kernel::resource::DiskImpl* sg_platf_new_disk(const simgrid::kernel::routing::DiskCreationArgs* disk)
 318 {
 319   simgrid::kernel::resource::DiskImpl* pimpl =
 320       routing_get_current()->create_disk(disk->id, disk->read_bw, disk->write_bw)->get_impl();
 321
 322   if (disk->properties) {
 323     pimpl->set_properties(*disk->properties);
 324     delete disk->properties;
 325   }
 326
 327   pimpl->seal();
 328   simgrid::s4u::Disk::on_creation(*pimpl->get_iface());
 329   return pimpl;
 330 }
 331
 332 void sg_platf_new_route(simgrid::kernel::routing::RouteCreationArgs* route)
 333 {
 334   routing_get_current()->add_route(route->src, route->dst, route->gw_src, route->gw_dst, route->link_list,
 335                                    route->symmetrical);
 336 }
 337
 338 void sg_platf_new_bypassRoute(simgrid::kernel::routing::RouteCreationArgs* bypassRoute)
 339 {
 340   routing_get_current()->add_bypass_route(bypassRoute->src, bypassRoute->dst, bypassRoute->gw_src, bypassRoute->gw_dst,
 341                                           bypassRoute->link_list, bypassRoute->symmetrical);
 342 }
 343
 344 void sg_platf_new_actor(simgrid::kernel::routing::ActorCreationArgs* actor)
 345 {
 346   sg_host_t host = sg_host_by_name(actor->host);
 347   if (not host) {
 348     // The requested host does not exist. Do a nice message to the user
 349     std::string msg = std::string("Cannot create actor '") + actor->function + "': host '" + actor->host +
 350                       "' does not exist\nExisting hosts: '";
 351
 352     std::vector<simgrid::s4u::Host*> list = simgrid::s4u::Engine::get_instance()->get_all_hosts();
 353
 354     for (auto const& some_host : list) {
 355       msg += some_host->get_name();
 356       msg += "', '";
 357       if (msg.length() > 1024) {
 358         msg.pop_back(); // remove trailing quote
 359         msg += "...(list truncated)......";
 360         break;
 361       }
 362     }
 363     xbt_die("%s", msg.c_str());
 364   }
 365   const simgrid::kernel::actor::ActorCodeFactory& factory =
 366       simgrid::kernel::EngineImpl::get_instance()->get_function(actor->function);
 367   xbt_assert(factory, "Error while creating an actor from the XML file: Function '%s' not registered", actor->function);
 368
 369   double start_time = actor->start_time;
 370   double kill_time  = actor->kill_time;
 371   bool auto_restart = actor->restart_on_failure;
 372
 373   std::string actor_name                 = actor->args[0];
 374   simgrid::kernel::actor::ActorCode code = factory(std::move(actor->args));
 375   std::shared_ptr<std::unordered_map<std::string, std::string>> properties(actor->properties);
 376
 377   auto* arg =
 378       new simgrid::kernel::actor::ProcessArg(actor_name, code, nullptr, host, kill_time, properties, auto_restart);
 379
 380   host->get_impl()->add_actor_at_boot(arg);
 381
 382   if (start_time > SIMIX_get_clock()) {
 383     arg = new simgrid::kernel::actor::ProcessArg(actor_name, code, nullptr, host, kill_time, properties, auto_restart);
 384
 385     XBT_DEBUG("Process %s@%s will be started at time %f", arg->name.c_str(), arg->host->get_cname(), start_time);
 386     simgrid::simix::Timer::set(start_time, [arg, auto_restart]() {
 387       simgrid::kernel::actor::ActorImplPtr new_actor = simgrid::kernel::actor::ActorImpl::create(
 388           arg->name.c_str(), arg->code, arg->data, arg->host, arg->properties.get(), nullptr);
 389       if (arg->kill_time >= 0)
 390         new_actor->set_kill_time(arg->kill_time);
 391       if (auto_restart)
 392         new_actor->set_auto_restart(auto_restart);
 393       delete arg;
 394     });
 395   } else { // start_time <= SIMIX_get_clock()
 396     XBT_DEBUG("Starting Process %s(%s) right now", arg->name.c_str(), host->get_cname());
 397
 398     try {
 399       simgrid::kernel::actor::ActorImplPtr new_actor = nullptr;
 400       new_actor = simgrid::kernel::actor::ActorImpl::create(arg->name.c_str(), code, nullptr, host,
 401                                                             arg->properties.get(), nullptr);
 402       /* The actor creation will fail if the host is currently dead, but that's fine */
 403       if (arg->kill_time >= 0)
 404         new_actor->set_kill_time(arg->kill_time);
 405       if (auto_restart)
 406         new_actor->set_auto_restart(auto_restart);
 407     } catch (simgrid::HostFailureException const&) {
 408       XBT_WARN("Deployment includes some initially turned off Hosts ... nevermind.");
 409     }
 410   }
 411 }
 412
 413 void sg_platf_new_peer(const simgrid::kernel::routing::PeerCreationArgs* peer)
 414 {
 415   auto* zone = dynamic_cast<simgrid::kernel::routing::VivaldiZone*>(current_routing);
 416   xbt_assert(zone, "<peer> tag can only be used in Vivaldi netzones.");
 417
 418   std::vector<double> speed_per_pstate;
 419   speed_per_pstate.push_back(peer->speed);
 420   simgrid::s4u::Host* host = zone->create_host(peer->id, speed_per_pstate, 1);
 421
 422   zone->set_peer_link(host->get_netpoint(), peer->bw_in, peer->bw_out, peer->coord);
 423
 424   /* Change from the defaults */
 425   if (peer->state_trace)
 426     host->set_state_profile(peer->state_trace);
 427   if (peer->speed_trace)
 428     host->set_speed_profile(peer->speed_trace);
 429   simgrid::s4u::Host::on_creation(*host); // notify the signal
 430 }
 431
 432 /**
 433  * @brief Auxiliary function to build the object NetZoneImpl
 434  *
 435  * Builds the objects, setting its father properties and root netzone if needed
 436  * @param zone the parameters defining the Zone to build.
 437  * @return Pointer to recently created netzone
 438  */
 439 static simgrid::kernel::routing::NetZoneImpl*
 440 sg_platf_create_zone(const simgrid::kernel::routing::ZoneCreationArgs* zone)
 441 {
 442   /* search the routing model */
 443   simgrid::kernel::routing::NetZoneImpl* new_zone = nullptr;
 444
 445   if (strcasecmp(zone->routing.c_str(), "Cluster") == 0) {
 446     new_zone = new simgrid::kernel::routing::ClusterZone(zone->id);
 447   } else if (strcasecmp(zone->routing.c_str(), "ClusterDragonfly") == 0) {
 448     new_zone = new simgrid::kernel::routing::DragonflyZone(zone->id);
 449   } else if (strcasecmp(zone->routing.c_str(), "ClusterTorus") == 0) {
 450     new_zone = new simgrid::kernel::routing::TorusZone(zone->id);
 451   } else if (strcasecmp(zone->routing.c_str(), "ClusterFatTree") == 0) {
 452     new_zone = new simgrid::kernel::routing::FatTreeZone(zone->id);
 453   } else if (strcasecmp(zone->routing.c_str(), "Dijkstra") == 0) {
 454     new_zone = new simgrid::kernel::routing::DijkstraZone(zone->id, false);
 455   } else if (strcasecmp(zone->routing.c_str(), "DijkstraCache") == 0) {
 456     new_zone = new simgrid::kernel::routing::DijkstraZone(zone->id, true);
 457   } else if (strcasecmp(zone->routing.c_str(), "Floyd") == 0) {
 458     new_zone = new simgrid::kernel::routing::FloydZone(zone->id);
 459   } else if (strcasecmp(zone->routing.c_str(), "Full") == 0) {
 460     new_zone = new simgrid::kernel::routing::FullZone(zone->id);
 461   } else if (strcasecmp(zone->routing.c_str(), "None") == 0) {
 462     new_zone = new simgrid::kernel::routing::EmptyZone(zone->id);
 463   } else if (strcasecmp(zone->routing.c_str(), "Vivaldi") == 0) {
 464     new_zone = new simgrid::kernel::routing::VivaldiZone(zone->id);
 465   } else if (strcasecmp(zone->routing.c_str(), "Wifi") == 0) {
 466     new_zone = new simgrid::kernel::routing::WifiZone(zone->id);
 467   } else {
 468     xbt_die("Not a valid model!");
 469   }
 470   new_zone->set_parent(current_routing);
 471
 472   if (current_routing) {
 473     /* set the father behavior */
 474     if (current_routing->hierarchy_ == simgrid::kernel::routing::NetZoneImpl::RoutingMode::unset)
 475       current_routing->hierarchy_ = simgrid::kernel::routing::NetZoneImpl::RoutingMode::recursive;
 476     /* add to the sons dictionary */
 477     current_routing->add_child(new_zone);
 478     /* set models from parent netzone */
 479     new_zone->set_network_model(current_routing->get_network_model());
 480     new_zone->set_cpu_pm_model(current_routing->get_cpu_pm_model());
 481     new_zone->set_cpu_vm_model(current_routing->get_cpu_vm_model());
 482     new_zone->set_disk_model(current_routing->get_disk_model());
 483     new_zone->set_host_model(current_routing->get_host_model());
 484   }
 485   return new_zone;
 486 }
 487
 488 /**
 489  * @brief Add a Zone to the platform
 490  *
 491  * Add a new autonomous system to the platform. Any elements (such as host, router or sub-Zone) added after this call
 492  * and before the corresponding call to sg_platf_new_Zone_seal() will be added to this Zone.
 493  *
 494  * Once this function was called, the configuration concerning the used models cannot be changed anymore.
 495  *
 496  * @param zone the parameters defining the Zone to build.
 497  */
 498 simgrid::kernel::routing::NetZoneImpl* sg_platf_new_Zone_begin(const simgrid::kernel::routing::ZoneCreationArgs* zone)
 499 {
 500   /* First create the zone.
 501    * This order is important to assure that root netzone is set when models are setting
 502    * the default mode for each resource (CPU, network, etc)
 503    */
 504   auto* new_zone = sg_platf_create_zone(zone);
 505
 506   _sg_cfg_init_status = 2; /* HACK: direct access to the global controlling the level of configuration to prevent
 507                             * any further config now that we created some real content */
 508
 509   /* set the new current component of the tree */
 510   current_routing = new_zone;
 511   simgrid::s4u::NetZone::on_creation(*new_zone->get_iface()); // notify the signal
 512
 513   return new_zone;
 514 }
 515
 516 void sg_platf_new_Zone_set_properties(const std::unordered_map<std::string, std::string>* props)
 517 {
 518   xbt_assert(current_routing, "Cannot set properties of the current Zone: none under construction");
 519
 520   if (props)
 521     current_routing->set_properties(*props);
 522 }
 523
 524 /**
 525  * @brief Specify that the description of the current Zone is finished
 526  *
 527  * Once you've declared all the content of your Zone, you have to seal
 528  * it with this call. Your Zone is not usable until you call this function.
 529  */
 530 void sg_platf_new_Zone_seal()
 531 {
 532   xbt_assert(current_routing, "Cannot seal the current Zone: zone under construction");
 533   current_routing->seal();
 534   simgrid::s4u::NetZone::on_seal(*current_routing->get_iface());
 535   current_routing = current_routing->get_parent();
 536 }
 537
 538 /** @brief Add a link connecting a host to the rest of its Zone (which must be cluster or vivaldi) */
 539 void sg_platf_new_hostlink(const simgrid::kernel::routing::HostLinkCreationArgs* hostlink)
 540 {
 541   const simgrid::kernel::routing::NetPoint* netpoint = simgrid::s4u::Host::by_name(hostlink->id)->get_netpoint();
 542   xbt_assert(netpoint, "Host '%s' not found!", hostlink->id.c_str());
 543   xbt_assert(dynamic_cast<simgrid::kernel::routing::ClusterZone*>(current_routing),
 544              "Only hosts from Cluster and Vivaldi Zones can get a host_link.");
 545
 546   const simgrid::s4u::Link* linkUp   = simgrid::s4u::Link::by_name_or_null(hostlink->link_up);
 547   const simgrid::s4u::Link* linkDown = simgrid::s4u::Link::by_name_or_null(hostlink->link_down);
 548
 549   xbt_assert(linkUp, "Link '%s' not found!", hostlink->link_up.c_str());
 550   xbt_assert(linkDown, "Link '%s' not found!", hostlink->link_down.c_str());
 551
 552   auto* cluster_zone = static_cast<simgrid::kernel::routing::ClusterZone*>(current_routing);
 553
 554   if (cluster_zone->private_link_exists_at(netpoint->id()))
 555     surf_parse_error(std::string("Host_link for '") + hostlink->id.c_str() + "' is already defined!");
 556
 557   XBT_DEBUG("Push Host_link for host '%s' to position %u", netpoint->get_cname(), netpoint->id());
 558   cluster_zone->add_private_link_at(netpoint->id(), {linkUp->get_impl(), linkDown->get_impl()});
 559 }
 560
 561 void sg_platf_new_trace(simgrid::kernel::routing::ProfileCreationArgs* profile)
 562 {
 563   simgrid::kernel::profile::Profile* mgr_profile;
 564   if (not profile->file.empty()) {
 565     mgr_profile = simgrid::kernel::profile::Profile::from_file(profile->file);
 566   } else {
 567     xbt_assert(not profile->pc_data.empty(), "Trace '%s' must have either a content, or point to a file on disk.",
 568                profile->id.c_str());
 569     mgr_profile = simgrid::kernel::profile::Profile::from_string(profile->id, profile->pc_data, profile->periodicity);
 570   }
 571   traces_set_list.insert({profile->id, mgr_profile});
 572 }