src/kernel/xml/sg_platf.cpp

   1 /* Copyright (c) 2006-2023. 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/DijkstraZone.hpp>
   8 #include <simgrid/kernel/routing/DragonflyZone.hpp>
   9 #include <simgrid/kernel/routing/EmptyZone.hpp>
  10 #include <simgrid/kernel/routing/FatTreeZone.hpp>
  11 #include <simgrid/kernel/routing/FloydZone.hpp>
  12 #include <simgrid/kernel/routing/FullZone.hpp>
  13 #include <simgrid/kernel/routing/NetPoint.hpp>
  14 #include <simgrid/kernel/routing/NetZoneImpl.hpp>
  15 #include <simgrid/kernel/routing/TorusZone.hpp>
  16 #include <simgrid/kernel/routing/VivaldiZone.hpp>
  17 #include <simgrid/kernel/routing/WifiZone.hpp>
  18 #include <simgrid/s4u/Engine.hpp>
  19 #include <simgrid/s4u/NetZone.hpp>
  20
  21 #include "src/kernel/EngineImpl.hpp"
  22 #include "src/kernel/resource/DiskImpl.hpp"
  23 #include "src/kernel/resource/HostImpl.hpp"
  24 #include "src/kernel/resource/profile/Profile.hpp"
  25 #include "src/kernel/xml/platf.hpp"
  26 #include "src/kernel/xml/platf_private.hpp"
  27 #include "src/simgrid/sg_config.hpp"
  28 #include "src/surf/surf_interface.hpp"
  29
  30 #include <algorithm>
  31 #include <string>
  32
  33 XBT_LOG_EXTERNAL_DEFAULT_CATEGORY(platf_parse);
  34
  35 namespace simgrid::kernel::routing {
  36 xbt::signal<void(ClusterCreationArgs const&)> on_cluster_creation;
  37 } // namespace simgrid::kernel::routing
  38
  39 static simgrid::kernel::routing::ClusterZoneCreationArgs
  40     zone_cluster; /* temporary store data for irregular clusters, created with <zone routing="Cluster"> */
  41
  42 /** The current NetZone in the parsing */
  43 static simgrid::kernel::routing::NetZoneImpl* current_routing = nullptr;
  44 static simgrid::s4u::Host* current_host                       = nullptr;
  45
  46 /** Module management function: frees all internal data structures */
  47 void sg_platf_parser_finalize()
  48 {
  49   simgrid::kernel::routing::on_cluster_creation.disconnect_slots();
  50
  51   simgrid_parse_lex_destroy();
  52 }
  53
  54 /** @brief Add a host to the current NetZone */
  55 void sg_platf_new_host_begin(const simgrid::kernel::routing::HostCreationArgs* args)
  56 {
  57   current_host = current_routing->create_host(args->id, args->speed_per_pstate)
  58                      ->set_coordinates(args->coord)
  59                      ->set_core_count(args->core_amount)
  60                      ->set_state_profile(args->state_trace)
  61                      ->set_speed_profile(args->speed_trace);
  62 }
  63
  64 void sg_platf_new_host_set_properties(const std::unordered_map<std::string, std::string>& props)
  65 {
  66   xbt_assert(current_host, "Cannot set properties of the current host: none under construction");
  67   current_host->set_properties(props);
  68 }
  69
  70 void sg_platf_new_host_seal(int pstate)
  71 {
  72   xbt_assert(current_host, "Cannot seal the current Host: none under construction");
  73   current_host->seal();
  74
  75   /* When energy plugin is activated, changing the pstate requires to already have the HostEnergy extension whose
  76    * allocation is triggered by the on_creation signal. Then set_pstate must be called after the signal emission */
  77
  78   if (pstate != 0)
  79     current_host->set_pstate(pstate);
  80
  81   current_host = nullptr;
  82 }
  83
  84 void sg_platf_new_peer(const simgrid::kernel::routing::PeerCreationArgs* args)
  85 {
  86   auto* zone = dynamic_cast<simgrid::kernel::routing::VivaldiZone*>(current_routing);
  87   xbt_assert(zone, "<peer> tag can only be used in Vivaldi netzones.");
  88
  89   const auto* peer = zone->create_host(args->id, {args->speed})
  90                          ->set_state_profile(args->state_trace)
  91                          ->set_speed_profile(args->speed_trace)
  92                          ->set_coordinates(args->coord)
  93                          ->seal();
  94
  95   zone->set_peer_link(peer->get_netpoint(), args->bw_in, args->bw_out);
  96 }
  97
  98 /** @brief Add a "router" to the network element list */
  99 simgrid::kernel::routing::NetPoint* sg_platf_new_router(const std::string& name, const std::string& coords)
 100 {
 101   auto* netpoint = current_routing->create_router(name)->set_coordinates(coords);
 102   XBT_DEBUG("Router '%s' has the id %lu", netpoint->get_cname(), netpoint->id());
 103
 104   return netpoint;
 105 }
 106
 107 void sg_platf_new_link(const simgrid::kernel::routing::LinkCreationArgs* args)
 108 {
 109   simgrid::s4u::Link* link;
 110   if (args->policy == simgrid::s4u::Link::SharingPolicy::SPLITDUPLEX) {
 111     link = current_routing->create_split_duplex_link(args->id, args->bandwidths);
 112   } else {
 113     link = current_routing->create_link(args->id, args->bandwidths);
 114     link->get_impl()->set_sharing_policy(args->policy, {});
 115   }
 116
 117   link->set_properties(args->properties)
 118       ->set_state_profile(args->state_trace)
 119       ->set_latency_profile(args->latency_trace)
 120       ->set_bandwidth_profile(args->bandwidth_trace)
 121       ->set_latency(args->latency);
 122
 123   link->seal();
 124 }
 125
 126 void sg_platf_new_disk(const simgrid::kernel::routing::DiskCreationArgs* disk)
 127 {
 128   const simgrid::s4u::Disk* new_disk = current_routing->create_disk(disk->id, disk->read_bw, disk->write_bw)
 129                                            ->set_host(current_host)
 130                                            ->set_properties(disk->properties)
 131                                            ->seal();
 132
 133   current_host->add_disk(new_disk);
 134 }
 135
 136 /*************************************************************************************************/
 137 /** @brief Auxiliary function to create hosts */
 138 static std::pair<simgrid::kernel::routing::NetPoint*, simgrid::kernel::routing::NetPoint*>
 139 sg_platf_cluster_create_host(const simgrid::kernel::routing::ClusterCreationArgs* cluster, simgrid::s4u::NetZone* zone,
 140                              const std::vector<unsigned long>& /*coord*/, unsigned long id)
 141 {
 142   xbt_assert(static_cast<unsigned long>(id) < cluster->radicals.size(),
 143              "Zone(%s): error when creating host number %lu in the zone. Insufficient number of radicals available "
 144              "(total = %zu). Check the 'radical' parameter in XML",
 145              cluster->id.c_str(), id, cluster->radicals.size());
 146
 147   std::string host_id = cluster->prefix + std::to_string(cluster->radicals[id]) + cluster->suffix;
 148   XBT_DEBUG("Cluster: creating host=%s speed=%f", host_id.c_str(), cluster->speeds.front());
 149   const simgrid::s4u::Host* host = zone->create_host(host_id, cluster->speeds)
 150                                        ->set_core_count(cluster->core_amount)
 151                                        ->set_properties(cluster->properties)
 152                                        ->seal();
 153   return std::make_pair(host->get_netpoint(), nullptr);
 154 }
 155
 156 /** @brief Auxiliary function to create loopback links */
 157 static simgrid::s4u::Link*
 158 sg_platf_cluster_create_loopback(const simgrid::kernel::routing::ClusterCreationArgs* cluster,
 159                                  simgrid::s4u::NetZone* zone, const std::vector<unsigned long>& /*coord*/,
 160                                  unsigned long id)
 161 {
 162   xbt_assert(static_cast<unsigned long>(id) < cluster->radicals.size(),
 163              "Zone(%s): error when creating loopback for host number %lu in the zone. Insufficient number of "
 164              "radicals available "
 165              "(total = %zu). Check the 'radical' parameter in XML",
 166              cluster->id.c_str(), id, cluster->radicals.size());
 167
 168   std::string link_id = cluster->id + "_link_" + std::to_string(cluster->radicals[id]) + "_loopback";
 169   XBT_DEBUG("Cluster: creating loopback link=%s bw=%f", link_id.c_str(), cluster->loopback_bw);
 170
 171   simgrid::s4u::Link* loopback = zone->create_link(link_id, cluster->loopback_bw)
 172                                      ->set_sharing_policy(simgrid::s4u::Link::SharingPolicy::FATPIPE)
 173                                      ->set_latency(cluster->loopback_lat)
 174                                      ->seal();
 175   return loopback;
 176 }
 177
 178 /** @brief Auxiliary function to create limiter links */
 179 static simgrid::s4u::Link* sg_platf_cluster_create_limiter(const simgrid::kernel::routing::ClusterCreationArgs* cluster,
 180                                                            simgrid::s4u::NetZone* zone,
 181                                                            const std::vector<unsigned long>& /*coord*/,
 182                                                            unsigned long id)
 183 {
 184   std::string link_id = cluster->id + "_link_" + std::to_string(id) + "_limiter";
 185   XBT_DEBUG("Cluster: creating limiter link=%s bw=%f", link_id.c_str(), cluster->limiter_link);
 186
 187   simgrid::s4u::Link* limiter = zone->create_link(link_id, cluster->limiter_link)->seal();
 188   return limiter;
 189 }
 190
 191 /** @brief Create Torus, Fat-Tree and Dragonfly clusters */
 192 static void sg_platf_new_cluster_hierarchical(const simgrid::kernel::routing::ClusterCreationArgs* cluster)
 193 {
 194   using namespace std::placeholders;
 195   using simgrid::kernel::routing::DragonflyZone;
 196   using simgrid::kernel::routing::FatTreeZone;
 197   using simgrid::kernel::routing::TorusZone;
 198
 199   auto set_host = std::bind(sg_platf_cluster_create_host, cluster, _1, _2, _3);
 200   std::function<simgrid::s4u::ClusterCallbacks::ClusterLinkCb> set_loopback{};
 201   std::function<simgrid::s4u::ClusterCallbacks::ClusterLinkCb> set_limiter{};
 202
 203   if (cluster->loopback_bw > 0 || cluster->loopback_lat > 0) {
 204     set_loopback = std::bind(sg_platf_cluster_create_loopback, cluster, _1, _2, _3);
 205   }
 206
 207   if (cluster->limiter_link > 0) {
 208     set_limiter = std::bind(sg_platf_cluster_create_limiter, cluster, _1, _2, _3);
 209   }
 210
 211   simgrid::s4u::NetZone const* parent = current_routing ? current_routing->get_iface() : nullptr;
 212   switch (cluster->topology) {
 213     case simgrid::kernel::routing::ClusterTopology::TORUS:
 214       simgrid::s4u::create_torus_zone(cluster->id, parent, TorusZone::parse_topo_parameters(cluster->topo_parameters),
 215                                       {set_host, set_loopback, set_limiter}, cluster->bw, cluster->lat,
 216                                       cluster->sharing_policy);
 217       break;
 218     case simgrid::kernel::routing::ClusterTopology::DRAGONFLY:
 219       simgrid::s4u::create_dragonfly_zone(
 220           cluster->id, parent, DragonflyZone::parse_topo_parameters(cluster->topo_parameters),
 221           {set_host, set_loopback, set_limiter}, cluster->bw, cluster->lat, cluster->sharing_policy);
 222       break;
 223     case simgrid::kernel::routing::ClusterTopology::FAT_TREE:
 224       simgrid::s4u::create_fatTree_zone(
 225           cluster->id, parent, FatTreeZone::parse_topo_parameters(cluster->topo_parameters),
 226           {set_host, set_loopback, set_limiter}, cluster->bw, cluster->lat, cluster->sharing_policy);
 227       break;
 228     default:
 229       THROW_IMPOSSIBLE;
 230   }
 231 }
 232
 233 /*************************************************************************************************/
 234 /** @brief Create regular Cluster */
 235 static void sg_platf_new_cluster_flat(simgrid::kernel::routing::ClusterCreationArgs* cluster)
 236 {
 237   auto* zone = simgrid::s4u::create_star_zone(cluster->id);
 238   if (const auto* parent = current_routing ? current_routing->get_iface() : nullptr)
 239     zone->set_parent(parent);
 240
 241   /* set properties */
 242   for (auto const& [key, value] : cluster->properties)
 243     zone->set_property(key, value);
 244
 245   /* Make the backbone */
 246   const simgrid::s4u::Link* backbone = nullptr;
 247   if ((cluster->bb_bw > 0) || (cluster->bb_lat > 0)) {
 248     std::string bb_name = cluster->id + "_backbone";
 249     XBT_DEBUG("<link\tid=\"%s\" bw=\"%f\" lat=\"%f\"/> <!--backbone -->", bb_name.c_str(), cluster->bb_bw,
 250               cluster->bb_lat);
 251
 252     backbone = zone->create_link(bb_name, cluster->bb_bw)
 253                    ->set_sharing_policy(cluster->bb_sharing_policy)
 254                    ->set_latency(cluster->bb_lat)
 255                    ->seal();
 256   }
 257
 258   for (int const& i : cluster->radicals) {
 259     std::string host_id = cluster->prefix + std::to_string(i) + cluster->suffix;
 260
 261     XBT_DEBUG("<host\tid=\"%s\"\tspeed=\"%f\">", host_id.c_str(), cluster->speeds.front());
 262     const auto* host = zone->create_host(host_id, cluster->speeds)
 263                            ->set_core_count(cluster->core_amount)
 264                            ->set_properties(cluster->properties)
 265                            ->seal();
 266
 267     XBT_DEBUG("</host>");
 268
 269     std::string link_id = cluster->id + "_link_" + std::to_string(i);
 270     XBT_DEBUG("<link\tid=\"%s\"\tbw=\"%f\"\tlat=\"%f\"/>", link_id.c_str(), cluster->bw, cluster->lat);
 271
 272     // add a loopback link
 273     if (cluster->loopback_bw > 0 || cluster->loopback_lat > 0) {
 274       std::string loopback_name = link_id + "_loopback";
 275       XBT_DEBUG("<loopback\tid=\"%s\"\tbw=\"%f\"/>", loopback_name.c_str(), cluster->loopback_bw);
 276
 277       const auto* loopback = zone->create_link(loopback_name, cluster->loopback_bw)
 278                                  ->set_sharing_policy(simgrid::s4u::Link::SharingPolicy::FATPIPE)
 279                                  ->set_latency(cluster->loopback_lat)
 280                                  ->seal();
 281
 282       zone->add_route(host->get_netpoint(), host->get_netpoint(), nullptr, nullptr,
 283                       {simgrid::s4u::LinkInRoute(loopback)});
 284     }
 285
 286     // add a limiter link (shared link to account for maximal bandwidth of the node)
 287     const simgrid::s4u::Link* limiter = nullptr;
 288     if (cluster->limiter_link > 0) {
 289       std::string limiter_name = link_id + "_limiter";
 290       XBT_DEBUG("<limiter\tid=\"%s\"\tbw=\"%f\"/>", limiter_name.c_str(), cluster->limiter_link);
 291
 292       limiter = zone->create_link(limiter_name, cluster->limiter_link)->seal();
 293     }
 294
 295     // create link
 296     const simgrid::s4u::Link* link;
 297     if (cluster->sharing_policy == simgrid::s4u::Link::SharingPolicy::SPLITDUPLEX) {
 298       link = zone->create_split_duplex_link(link_id, cluster->bw)->set_latency(cluster->lat)->seal();
 299     } else {
 300       link = zone->create_link(link_id, cluster->bw)->set_latency(cluster->lat)->seal();
 301     }
 302
 303     /* adding routes */
 304     std::vector<simgrid::s4u::LinkInRoute> links;
 305     if (limiter)
 306       links.emplace_back(limiter);
 307     links.emplace_back(link, simgrid::s4u::LinkInRoute::Direction::UP);
 308     if (backbone)
 309       links.emplace_back(backbone);
 310
 311     zone->add_route(host->get_netpoint(), nullptr, nullptr, nullptr, links, true);
 312   }
 313
 314   // Add a router.
 315   XBT_DEBUG(" ");
 316   XBT_DEBUG("<router id=\"%s\"/>", cluster->router_id.c_str());
 317   if (cluster->router_id.empty())
 318     cluster->router_id = cluster->prefix + cluster->id + "_router" + cluster->suffix;
 319   auto* router = zone->create_router(cluster->router_id);
 320   zone->add_route(router, nullptr, nullptr, nullptr, {});
 321
 322   simgrid::kernel::routing::on_cluster_creation(*cluster);
 323 }
 324
 325 void sg_platf_new_tag_cluster(simgrid::kernel::routing::ClusterCreationArgs* cluster)
 326 {
 327   switch (cluster->topology) {
 328     case simgrid::kernel::routing::ClusterTopology::TORUS:
 329     case simgrid::kernel::routing::ClusterTopology::DRAGONFLY:
 330     case simgrid::kernel::routing::ClusterTopology::FAT_TREE:
 331       sg_platf_new_cluster_hierarchical(cluster);
 332       break;
 333     default:
 334       sg_platf_new_cluster_flat(cluster);
 335       break;
 336   }
 337 }
 338 /*************************************************************************************************/
 339 /** @brief Set the links for internal node inside a Cluster(Star) */
 340 static void sg_platf_cluster_set_hostlink(simgrid::kernel::routing::StarZone* zone,
 341                                           simgrid::kernel::routing::NetPoint* netpoint,
 342                                           const simgrid::s4u::Link* link_up, const simgrid::s4u::Link* link_down,
 343                                           const simgrid::s4u::Link* backbone)
 344 {
 345   XBT_DEBUG("Push Host_link for host '%s' to position %lu", netpoint->get_cname(), netpoint->id());
 346   simgrid::s4u::LinkInRoute linkUp{link_up};
 347   simgrid::s4u::LinkInRoute linkDown{link_down};
 348   if (backbone) {
 349     simgrid::s4u::LinkInRoute linkBB{backbone};
 350     zone->add_route(netpoint, nullptr, nullptr, nullptr, {linkUp, linkBB}, false);
 351     zone->add_route(nullptr, netpoint, nullptr, nullptr, {linkBB, linkDown}, false);
 352   } else {
 353     zone->add_route(netpoint, nullptr, nullptr, nullptr, {linkUp}, false);
 354     zone->add_route(nullptr, netpoint, nullptr, nullptr, {linkDown}, false);
 355   }
 356 }
 357
 358 /** @brief Add a link connecting a host to the rest of its StarZone */
 359 static void sg_platf_build_hostlink(simgrid::kernel::routing::StarZone* zone,
 360                                     const simgrid::kernel::routing::HostLinkCreationArgs* hostlink,
 361                                     const simgrid::s4u::Link* backbone)
 362 {
 363   const auto engine = simgrid::s4u::Engine::get_instance();
 364   auto netpoint     = engine->host_by_name(hostlink->id)->get_netpoint();
 365   xbt_assert(netpoint, "Host '%s' not found!", hostlink->id.c_str());
 366
 367   const auto linkUp   = engine->link_by_name_or_null(hostlink->link_up);
 368   const auto linkDown = engine->link_by_name_or_null(hostlink->link_down);
 369
 370   xbt_assert(linkUp, "Link '%s' not found!", hostlink->link_up.c_str());
 371   xbt_assert(linkDown, "Link '%s' not found!", hostlink->link_down.c_str());
 372   sg_platf_cluster_set_hostlink(zone, netpoint, linkUp, linkDown, backbone);
 373 }
 374
 375 /** @brief Create a cabinet (set of hosts) inside a Cluster(StarZone) */
 376 static void sg_platf_build_cabinet(simgrid::kernel::routing::StarZone* zone,
 377                                    const simgrid::kernel::routing::CabinetCreationArgs* args,
 378                                    const simgrid::s4u::Link* backbone)
 379 {
 380   for (int const& radical : args->radicals) {
 381     std::string id   = args->prefix + std::to_string(radical) + args->suffix;
 382     auto const* host = zone->create_host(id, {args->speed})->seal();
 383
 384     const auto* link_up   = zone->create_link("link_" + id + "_UP", {args->bw})->set_latency(args->lat)->seal();
 385     const auto* link_down = zone->create_link("link_" + id + "_DOWN", {args->bw})->set_latency(args->lat)->seal();
 386
 387     sg_platf_cluster_set_hostlink(zone, host->get_netpoint(), link_up, link_down, backbone);
 388   }
 389 }
 390
 391 static void sg_platf_zone_cluster_populate(const simgrid::kernel::routing::ClusterZoneCreationArgs* cluster)
 392 {
 393   auto* zone = dynamic_cast<simgrid::kernel::routing::StarZone*>(current_routing);
 394   xbt_assert(zone, "Host_links are only valid for Cluster(Star)");
 395
 396   const simgrid::s4u::Link* backbone = nullptr;
 397   /* create backbone */
 398   if (cluster->backbone) {
 399     sg_platf_new_link(cluster->backbone.get());
 400     backbone = simgrid::s4u::Link::by_name(cluster->backbone->id);
 401   }
 402
 403   /* create host_links for hosts */
 404   for (auto const& hostlink : cluster->host_links) {
 405     sg_platf_build_hostlink(zone, &hostlink, backbone);
 406   }
 407
 408   /* create cabinets */
 409   for (auto const& cabinet : cluster->cabinets) {
 410     sg_platf_build_cabinet(zone, &cabinet, backbone);
 411   }
 412 }
 413
 414 void routing_cluster_add_backbone(std::unique_ptr<simgrid::kernel::routing::LinkCreationArgs> link)
 415 {
 416   zone_cluster.backbone = std::move(link);
 417 }
 418
 419 void sg_platf_new_cabinet(const simgrid::kernel::routing::CabinetCreationArgs* args)
 420 {
 421   xbt_assert(args, "Invalid nullptr argument");
 422   zone_cluster.cabinets.emplace_back(*args);
 423 }
 424
 425 /*************************************************************************************************/
 426 void sg_platf_new_route(simgrid::kernel::routing::RouteCreationArgs* route)
 427 {
 428   current_routing->add_route(route->src, route->dst, route->gw_src, route->gw_dst, route->link_list,
 429                              route->symmetrical);
 430 }
 431
 432 void sg_platf_new_bypass_route(simgrid::kernel::routing::RouteCreationArgs* route)
 433 {
 434   current_routing->add_bypass_route(route->src, route->dst, route->gw_src, route->gw_dst, route->link_list);
 435 }
 436
 437 void sg_platf_new_actor(simgrid::kernel::routing::ActorCreationArgs* actor)
 438 {
 439   const auto* engine = simgrid::s4u::Engine::get_instance();
 440   sg_host_t host     = sg_host_by_name(actor->host);
 441   if (not host) {
 442     // The requested host does not exist. Do a nice message to the user
 443     std::string msg = std::string("Cannot create actor '") + actor->function + "': host '" + actor->host +
 444                       "' does not exist\nExisting hosts: '";
 445
 446     std::vector<simgrid::s4u::Host*> list = engine->get_all_hosts();
 447
 448     for (auto const& some_host : list) {
 449       msg += some_host->get_name();
 450       msg += "', '";
 451       if (msg.length() > 1024) {
 452         msg.pop_back(); // remove trailing quote
 453         msg += "...(list truncated)......";
 454         break;
 455       }
 456     }
 457     xbt_die("%s", msg.c_str());
 458   }
 459   const simgrid::kernel::actor::ActorCodeFactory& factory = engine->get_impl()->get_function(actor->function);
 460   xbt_assert(factory, "Error while creating an actor from the XML file: Function '%s' not registered", actor->function);
 461
 462   double start_time = actor->start_time;
 463   double kill_time  = actor->kill_time;
 464   bool auto_restart = actor->restart_on_failure;
 465
 466   std::string actor_name                 = actor->args[0];
 467   simgrid::kernel::actor::ActorCode code = factory(std::move(actor->args));
 468
 469   auto* arg = new simgrid::kernel::actor::ProcessArg(actor_name, code, nullptr, host, kill_time, actor->properties,
 470                                                      auto_restart, /*daemon=*/false, /*restart_count=*/0);
 471
 472   host->get_impl()->add_actor_at_boot(arg);
 473
 474   if (start_time > simgrid::s4u::Engine::get_clock()) {
 475     arg = new simgrid::kernel::actor::ProcessArg(actor_name, code, nullptr, host, kill_time, actor->properties,
 476                                                  auto_restart, /*daemon=*/false, /*restart_count=*/0);
 477
 478     XBT_DEBUG("Actor %s@%s will be started at time %f", arg->name.c_str(), arg->host->get_cname(), start_time);
 479     simgrid::kernel::timer::Timer::set(start_time, [arg]() {
 480       simgrid::kernel::actor::ActorImplPtr new_actor = simgrid::kernel::actor::ActorImpl::create(arg);
 481       delete arg;
 482     });
 483   } else { // start_time <= simgrid::s4u::Engine::get_clock()
 484     XBT_DEBUG("Starting actor %s(%s) right now", arg->name.c_str(), host->get_cname());
 485
 486     try {
 487       simgrid::kernel::actor::ActorImplPtr new_actor = simgrid::kernel::actor::ActorImpl::create(arg);
 488     } catch (simgrid::HostFailureException const&) {
 489       XBT_WARN("Starting actor %s(%s) failed because its host is turned off.", arg->name.c_str(), host->get_cname());
 490     }
 491   }
 492 }
 493
 494 /**
 495  * @brief Auxiliary function to build the object NetZoneImpl
 496  *
 497  * Builds the objects, setting its parent properties and root netzone if needed
 498  * @param zone the parameters defining the Zone to build.
 499  * @return Pointer to recently created netzone
 500  */
 501 static simgrid::kernel::routing::NetZoneImpl*
 502 sg_platf_create_zone(const simgrid::kernel::routing::ZoneCreationArgs* zone)
 503 {
 504   /* search the routing model */
 505   const simgrid::s4u::NetZone* new_zone = nullptr;
 506
 507   if (strcasecmp(zone->routing.c_str(), "Cluster") == 0) {
 508     new_zone = simgrid::s4u::create_star_zone(zone->id);
 509   } else if (strcasecmp(zone->routing.c_str(), "Dijkstra") == 0) {
 510     new_zone = simgrid::s4u::create_dijkstra_zone(zone->id, false);
 511   } else if (strcasecmp(zone->routing.c_str(), "DijkstraCache") == 0) {
 512     new_zone = simgrid::s4u::create_dijkstra_zone(zone->id, true);
 513   } else if (strcasecmp(zone->routing.c_str(), "Floyd") == 0) {
 514     new_zone = simgrid::s4u::create_floyd_zone(zone->id);
 515   } else if (strcasecmp(zone->routing.c_str(), "Full") == 0) {
 516     new_zone = simgrid::s4u::create_full_zone(zone->id);
 517   } else if (strcasecmp(zone->routing.c_str(), "None") == 0) {
 518     new_zone = simgrid::s4u::create_empty_zone(zone->id);
 519   } else if (strcasecmp(zone->routing.c_str(), "Vivaldi") == 0) {
 520     new_zone = simgrid::s4u::create_vivaldi_zone(zone->id);
 521   } else if (strcasecmp(zone->routing.c_str(), "Wifi") == 0) {
 522     new_zone = simgrid::s4u::create_wifi_zone(zone->id);
 523   } else {
 524     xbt_die("Not a valid model!");
 525   }
 526
 527   simgrid::kernel::routing::NetZoneImpl* new_zone_impl = new_zone->get_impl();
 528   new_zone_impl->set_parent(current_routing);
 529
 530   return new_zone_impl;
 531 }
 532
 533 /**
 534  * @brief Add a Zone to the platform
 535  *
 536  * Add a new autonomous system to the platform. Any elements (such as host, router or sub-Zone) added after this call
 537  * and before the corresponding call to sg_platf_new_zone_seal() will be added to this Zone.
 538  *
 539  * Once this function was called, the configuration concerning the used models cannot be changed anymore.
 540  *
 541  * @param zone the parameters defining the Zone to build.
 542  */
 543 simgrid::kernel::routing::NetZoneImpl* sg_platf_new_zone_begin(const simgrid::kernel::routing::ZoneCreationArgs* zone)
 544 {
 545   zone_cluster.routing = zone->routing;
 546   current_routing      = sg_platf_create_zone(zone);
 547
 548   return current_routing;
 549 }
 550
 551 void sg_platf_new_zone_set_properties(const std::unordered_map<std::string, std::string>& props)
 552 {
 553   xbt_assert(current_routing, "Cannot set properties of the current Zone: none under construction");
 554
 555   current_routing->set_properties(props);
 556 }
 557
 558 /**
 559  * @brief Specify that the description of the current Zone is finished
 560  *
 561  * Once you've declared all the content of your Zone, you have to seal
 562  * it with this call. Your Zone is not usable until you call this function.
 563  */
 564 void sg_platf_new_zone_seal()
 565 {
 566   xbt_assert(current_routing, "Cannot seal the current Zone: none under construction");
 567   if (strcasecmp(zone_cluster.routing.c_str(), "Cluster") == 0) {
 568     sg_platf_zone_cluster_populate(&zone_cluster);
 569     zone_cluster.routing = "";
 570     zone_cluster.host_links.clear();
 571     zone_cluster.cabinets.clear();
 572     zone_cluster.backbone.reset();
 573   }
 574   current_routing = current_routing->get_parent();
 575 }
 576
 577 /** @brief Add a link connecting a host to the rest of its Zone (which must be cluster or vivaldi) */
 578 void sg_platf_new_hostlink(const simgrid::kernel::routing::HostLinkCreationArgs* hostlink)
 579 {
 580   xbt_assert(hostlink, "Invalid nullptr parameter");
 581   zone_cluster.host_links.emplace_back(*hostlink);
 582 }
 583
 584 void sg_platf_new_trace(const simgrid::kernel::routing::ProfileCreationArgs* args)
 585 {
 586   simgrid::kernel::profile::Profile* profile;
 587   if (not args->file.empty()) {
 588     profile = simgrid::kernel::profile::ProfileBuilder::from_file(args->file);
 589   } else {
 590     xbt_assert(not args->pc_data.empty(), "Trace '%s' must have either a content, or point to a file on disk.",
 591                args->id.c_str());
 592     profile = simgrid::kernel::profile::ProfileBuilder::from_string(args->id, args->pc_data, args->periodicity);
 593   }
 594   traces_set_list.try_emplace(args->id, profile);
 595 }