src/surf/sg_platf.cpp

   1 /* Copyright (c) 2006-2022. 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 "simgrid/sg_config.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/surf/HostImpl.hpp"
  26 #include "src/surf/xml/platf.hpp"
  27 #include "src/surf/xml/platf_private.hpp"
  28
  29 #include <algorithm>
  30 #include <string>
  31
  32 XBT_LOG_EXTERNAL_DEFAULT_CATEGORY(surf_parse);
  33
  34 namespace simgrid {
  35 namespace kernel {
  36 namespace routing {
  37 xbt::signal<void(ClusterCreationArgs const&)> on_cluster_creation;
  38 } // namespace routing
  39 } // namespace kernel
  40 } // namespace simgrid
  41
  42 static simgrid::kernel::routing::ClusterZoneCreationArgs
  43     zone_cluster; /* temporary store data for irregular clusters, created with <zone routing="Cluster"> */
  44
  45 /** The current NetZone in the parsing */
  46 static simgrid::kernel::routing::NetZoneImpl* current_routing = nullptr;
  47 static simgrid::s4u::Host* current_host = nullptr;
  48
  49 /** Module management function: creates all internal data structures */
  50 void sg_platf_init()
  51 {
  52   // Do nothing: just for symmetry of user code
  53 }
  54
  55 /** Module management function: frees all internal data structures */
  56 void sg_platf_exit()
  57 {
  58   simgrid::kernel::routing::on_cluster_creation.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_begin(const simgrid::kernel::routing::HostCreationArgs* args)
  65 {
  66   current_host = current_routing->create_host(args->id, args->speed_per_pstate)
  67                      ->set_coordinates(args->coord)
  68                      ->set_core_count(args->core_amount)
  69                      ->set_state_profile(args->state_trace)
  70                      ->set_speed_profile(args->speed_trace);
  71 }
  72
  73 void sg_platf_new_host_set_properties(const std::unordered_map<std::string, std::string>& props)
  74 {
  75   xbt_assert(current_host, "Cannot set properties of the current host: none under construction");
  76   current_host->set_properties(props);
  77 }
  78
  79 void sg_platf_new_host_seal(int pstate)
  80 {
  81   xbt_assert(current_host, "Cannot seal the current Host: none under construction");
  82   current_host->seal();
  83
  84   /* When energy plugin is activated, changing the pstate requires to already have the HostEnergy extension whose
  85    * allocation is triggered by the on_creation signal. Then set_pstate must be called after the signal emission */
  86
  87   if (pstate != 0)
  88     current_host->set_pstate(pstate);
  89
  90   current_host = nullptr;
  91 }
  92
  93 void sg_platf_new_peer(const simgrid::kernel::routing::PeerCreationArgs* args)
  94 {
  95   auto* zone = dynamic_cast<simgrid::kernel::routing::VivaldiZone*>(current_routing);
  96   xbt_assert(zone, "<peer> tag can only be used in Vivaldi netzones.");
  97
  98   const auto* peer = zone->create_host(args->id, {args->speed})
  99                          ->set_state_profile(args->state_trace)
 100                          ->set_speed_profile(args->speed_trace)
 101                          ->set_coordinates(args->coord)
 102                          ->seal();
 103
 104   zone->set_peer_link(peer->get_netpoint(), args->bw_in, args->bw_out);
 105 }
 106
 107 /** @brief Add a "router" to the network element list */
 108 simgrid::kernel::routing::NetPoint* sg_platf_new_router(const std::string& name, const std::string& coords)
 109 {
 110   auto* netpoint = current_routing->create_router(name)->set_coordinates(coords);
 111   XBT_DEBUG("Router '%s' has the id %lu", netpoint->get_cname(), netpoint->id());
 112
 113   return netpoint;
 114 }
 115
 116 void sg_platf_new_link(const simgrid::kernel::routing::LinkCreationArgs* args)
 117 {
 118   simgrid::s4u::Link* link;
 119   if (args->policy == simgrid::s4u::Link::SharingPolicy::SPLITDUPLEX) {
 120     link = current_routing->create_split_duplex_link(args->id, args->bandwidths);
 121   } else {
 122     link = current_routing->create_link(args->id, args->bandwidths);
 123     link->get_impl()->set_sharing_policy(args->policy, {});
 124   }
 125
 126   link->set_properties(args->properties)
 127       ->set_state_profile(args->state_trace)
 128       ->set_latency_profile(args->latency_trace)
 129       ->set_bandwidth_profile(args->bandwidth_trace)
 130       ->set_latency(args->latency);
 131
 132   link->seal();
 133 }
 134
 135 void sg_platf_new_disk(const simgrid::kernel::routing::DiskCreationArgs* disk)
 136 {
 137   const simgrid::s4u::Disk* new_disk = current_routing->create_disk(disk->id, disk->read_bw, disk->write_bw)
 138                                            ->set_host(current_host)
 139                                            ->set_properties(disk->properties)
 140                                            ->seal();
 141
 142   current_host->add_disk(new_disk);
 143 }
 144
 145 /*************************************************************************************************/
 146 /** @brief Auxiliary function to create hosts */
 147 static std::pair<simgrid::kernel::routing::NetPoint*, simgrid::kernel::routing::NetPoint*>
 148 sg_platf_cluster_create_host(const simgrid::kernel::routing::ClusterCreationArgs* cluster, simgrid::s4u::NetZone* zone,
 149                              const std::vector<unsigned long>& /*coord*/, unsigned long id)
 150 {
 151   xbt_assert(static_cast<unsigned long>(id) < cluster->radicals.size(),
 152              "Zone(%s): error when creating host number %lu in the zone. Insufficient number of radicals available "
 153              "(total = %zu). Check the 'radical' parameter in XML",
 154              cluster->id.c_str(), id, cluster->radicals.size());
 155
 156   std::string host_id = std::string(cluster->prefix) + std::to_string(cluster->radicals[id]) + cluster->suffix;
 157   XBT_DEBUG("Cluster: creating host=%s speed=%f", host_id.c_str(), cluster->speeds.front());
 158   const simgrid::s4u::Host* host = zone->create_host(host_id, cluster->speeds)
 159                                        ->set_core_count(cluster->core_amount)
 160                                        ->set_properties(cluster->properties)
 161                                        ->seal();
 162   return std::make_pair(host->get_netpoint(), nullptr);
 163 }
 164
 165 /** @brief Auxiliary function to create loopback links */
 166 static simgrid::s4u::Link*
 167 sg_platf_cluster_create_loopback(const simgrid::kernel::routing::ClusterCreationArgs* cluster,
 168                                  simgrid::s4u::NetZone* zone, const std::vector<unsigned long>& /*coord*/,
 169                                  unsigned long id)
 170 {
 171   xbt_assert(static_cast<unsigned long>(id) < cluster->radicals.size(),
 172              "Zone(%s): error when creating loopback for host number %lu in the zone. Insufficient number of "
 173              "radicals available "
 174              "(total = %zu). Check the 'radical' parameter in XML",
 175              cluster->id.c_str(), id, cluster->radicals.size());
 176
 177   std::string link_id = std::string(cluster->id) + "_link_" + std::to_string(cluster->radicals[id]) + "_loopback";
 178   XBT_DEBUG("Cluster: creating loopback link=%s bw=%f", link_id.c_str(), cluster->loopback_bw);
 179
 180   simgrid::s4u::Link* loopback = zone->create_link(link_id, cluster->loopback_bw)
 181                                      ->set_sharing_policy(simgrid::s4u::Link::SharingPolicy::FATPIPE)
 182                                      ->set_latency(cluster->loopback_lat)
 183                                      ->seal();
 184   return loopback;
 185 }
 186
 187 /** @brief Auxiliary function to create limiter links */
 188 static simgrid::s4u::Link* sg_platf_cluster_create_limiter(const simgrid::kernel::routing::ClusterCreationArgs* cluster,
 189                                                            simgrid::s4u::NetZone* zone,
 190                                                            const std::vector<unsigned long>& /*coord*/,
 191                                                            unsigned long id)
 192 {
 193   std::string link_id = std::string(cluster->id) + "_link_" + std::to_string(id) + "_limiter";
 194   XBT_DEBUG("Cluster: creating limiter link=%s bw=%f", link_id.c_str(), cluster->limiter_link);
 195
 196   simgrid::s4u::Link* limiter = zone->create_link(link_id, cluster->limiter_link)->seal();
 197   return limiter;
 198 }
 199
 200 /** @brief Create Torus, Fat-Tree and Dragonfly clusters */
 201 static void sg_platf_new_cluster_hierarchical(const simgrid::kernel::routing::ClusterCreationArgs* cluster)
 202 {
 203   using namespace std::placeholders;
 204   using simgrid::kernel::routing::DragonflyZone;
 205   using simgrid::kernel::routing::FatTreeZone;
 206   using simgrid::kernel::routing::TorusZone;
 207
 208   auto set_host = std::bind(sg_platf_cluster_create_host, cluster, _1, _2, _3);
 209   std::function<simgrid::s4u::ClusterCallbacks::ClusterLinkCb> set_loopback{};
 210   std::function<simgrid::s4u::ClusterCallbacks::ClusterLinkCb> set_limiter{};
 211
 212   if (cluster->loopback_bw > 0 || cluster->loopback_lat > 0) {
 213     set_loopback = std::bind(sg_platf_cluster_create_loopback, cluster, _1, _2, _3);
 214   }
 215
 216   if (cluster->limiter_link > 0) {
 217     set_limiter = std::bind(sg_platf_cluster_create_limiter, cluster, _1, _2, _3);
 218   }
 219
 220   simgrid::s4u::NetZone const* parent = current_routing ? current_routing->get_iface() : nullptr;
 221   switch (cluster->topology) {
 222     case simgrid::kernel::routing::ClusterTopology::TORUS:
 223       simgrid::s4u::create_torus_zone(cluster->id, parent, TorusZone::parse_topo_parameters(cluster->topo_parameters),
 224                                       {set_host, set_loopback, set_limiter}, cluster->bw, cluster->lat,
 225                                       cluster->sharing_policy);
 226       break;
 227     case simgrid::kernel::routing::ClusterTopology::DRAGONFLY:
 228       simgrid::s4u::create_dragonfly_zone(
 229           cluster->id, parent, DragonflyZone::parse_topo_parameters(cluster->topo_parameters),
 230           {set_host, set_loopback, set_limiter}, cluster->bw, cluster->lat, cluster->sharing_policy);
 231       break;
 232     case simgrid::kernel::routing::ClusterTopology::FAT_TREE:
 233       simgrid::s4u::create_fatTree_zone(
 234           cluster->id, parent, FatTreeZone::parse_topo_parameters(cluster->topo_parameters),
 235           {set_host, set_loopback, set_limiter}, cluster->bw, cluster->lat, cluster->sharing_policy);
 236       break;
 237     default:
 238       THROW_IMPOSSIBLE;
 239   }
 240 }
 241
 242 /*************************************************************************************************/
 243 /** @brief Create regular Cluster */
 244 static void sg_platf_new_cluster_flat(simgrid::kernel::routing::ClusterCreationArgs* cluster)
 245 {
 246   auto* zone                          = simgrid::s4u::create_star_zone(cluster->id);
 247   if (const auto* parent = current_routing ? current_routing->get_iface() : nullptr)
 248     zone->set_parent(parent);
 249
 250   /* set properties */
 251   for (auto const& [key, value] : cluster->properties)
 252     zone->set_property(key, value);
 253
 254   /* Make the backbone */
 255   const simgrid::s4u::Link* backbone = nullptr;
 256   if ((cluster->bb_bw > 0) || (cluster->bb_lat > 0)) {
 257     std::string bb_name = std::string(cluster->id) + "_backbone";
 258     XBT_DEBUG("<link\tid=\"%s\" bw=\"%f\" lat=\"%f\"/> <!--backbone -->", bb_name.c_str(), cluster->bb_bw,
 259               cluster->bb_lat);
 260
 261     backbone = zone->create_link(bb_name, cluster->bb_bw)
 262                    ->set_sharing_policy(cluster->bb_sharing_policy)
 263                    ->set_latency(cluster->bb_lat)
 264                    ->seal();
 265   }
 266
 267   for (int const& i : cluster->radicals) {
 268     std::string host_id = std::string(cluster->prefix) + std::to_string(i) + cluster->suffix;
 269
 270     XBT_DEBUG("<host\tid=\"%s\"\tspeed=\"%f\">", host_id.c_str(), cluster->speeds.front());
 271     const auto* host = zone->create_host(host_id, cluster->speeds)
 272                            ->set_core_count(cluster->core_amount)
 273                            ->set_properties(cluster->properties)
 274                            ->seal();
 275
 276     XBT_DEBUG("</host>");
 277
 278     std::string link_id = std::string(cluster->id) + "_link_" + std::to_string(i);
 279     XBT_DEBUG("<link\tid=\"%s\"\tbw=\"%f\"\tlat=\"%f\"/>", link_id.c_str(), cluster->bw, cluster->lat);
 280
 281     // add a loopback link
 282     if (cluster->loopback_bw > 0 || cluster->loopback_lat > 0) {
 283       std::string loopback_name = link_id + "_loopback";
 284       XBT_DEBUG("<loopback\tid=\"%s\"\tbw=\"%f\"/>", loopback_name.c_str(), cluster->loopback_bw);
 285
 286       const auto* loopback = zone->create_link(loopback_name, cluster->loopback_bw)
 287                                  ->set_sharing_policy(simgrid::s4u::Link::SharingPolicy::FATPIPE)
 288                                  ->set_latency(cluster->loopback_lat)
 289                                  ->seal();
 290
 291       zone->add_route(host->get_netpoint(), host->get_netpoint(), nullptr, nullptr,
 292                       {simgrid::s4u::LinkInRoute(loopback)});
 293     }
 294
 295     // add a limiter link (shared link to account for maximal bandwidth of the node)
 296     const simgrid::s4u::Link* limiter = nullptr;
 297     if (cluster->limiter_link > 0) {
 298       std::string limiter_name = std::string(link_id) + "_limiter";
 299       XBT_DEBUG("<limiter\tid=\"%s\"\tbw=\"%f\"/>", limiter_name.c_str(), cluster->limiter_link);
 300
 301       limiter = zone->create_link(limiter_name, cluster->limiter_link)->seal();
 302     }
 303
 304     // create link
 305     const simgrid::s4u::Link* link;
 306     if (cluster->sharing_policy == simgrid::s4u::Link::SharingPolicy::SPLITDUPLEX) {
 307       link = zone->create_split_duplex_link(link_id, cluster->bw)->set_latency(cluster->lat)->seal();
 308     } else {
 309       link = zone->create_link(link_id, cluster->bw)->set_latency(cluster->lat)->seal();
 310     }
 311
 312     /* adding routes */
 313     std::vector<simgrid::s4u::LinkInRoute> links;
 314     if (limiter)
 315       links.emplace_back(limiter);
 316     links.emplace_back(link, simgrid::s4u::LinkInRoute::Direction::UP);
 317     if (backbone)
 318       links.emplace_back(backbone);
 319
 320     zone->add_route(host->get_netpoint(), nullptr, nullptr, nullptr, links, true);
 321   }
 322
 323   // Add a router.
 324   XBT_DEBUG(" ");
 325   XBT_DEBUG("<router id=\"%s\"/>", cluster->router_id.c_str());
 326   if (cluster->router_id.empty())
 327     cluster->router_id = std::string(cluster->prefix) + cluster->id + "_router" + cluster->suffix;
 328   auto* router = zone->create_router(cluster->router_id);
 329   zone->add_route(router, nullptr, nullptr, nullptr, {});
 330
 331   simgrid::kernel::routing::on_cluster_creation(*cluster);
 332 }
 333
 334 void sg_platf_new_tag_cluster(simgrid::kernel::routing::ClusterCreationArgs* cluster)
 335 {
 336   switch (cluster->topology) {
 337     case simgrid::kernel::routing::ClusterTopology::TORUS:
 338     case simgrid::kernel::routing::ClusterTopology::DRAGONFLY:
 339     case simgrid::kernel::routing::ClusterTopology::FAT_TREE:
 340       sg_platf_new_cluster_hierarchical(cluster);
 341       break;
 342     default:
 343       sg_platf_new_cluster_flat(cluster);
 344       break;
 345   }
 346 }
 347 /*************************************************************************************************/
 348 /** @brief Set the links for internal node inside a Cluster(Star) */
 349 static void sg_platf_cluster_set_hostlink(simgrid::kernel::routing::StarZone* zone,
 350                                           simgrid::kernel::routing::NetPoint* netpoint,
 351                                           const simgrid::s4u::Link* link_up, const simgrid::s4u::Link* link_down,
 352                                           const simgrid::s4u::Link* backbone)
 353 {
 354   XBT_DEBUG("Push Host_link for host '%s' to position %lu", netpoint->get_cname(), netpoint->id());
 355   simgrid::s4u::LinkInRoute linkUp{link_up};
 356   simgrid::s4u::LinkInRoute linkDown{link_down};
 357   if (backbone) {
 358     simgrid::s4u::LinkInRoute linkBB{backbone};
 359     zone->add_route(netpoint, nullptr, nullptr, nullptr, {linkUp, linkBB}, false);
 360     zone->add_route(nullptr, netpoint, nullptr, nullptr, {linkBB, linkDown}, false);
 361   } else {
 362     zone->add_route(netpoint, nullptr, nullptr, nullptr, {linkUp}, false);
 363     zone->add_route(nullptr, netpoint, nullptr, nullptr, {linkDown}, false);
 364   }
 365 }
 366
 367 /** @brief Add a link connecting a host to the rest of its StarZone */
 368 static void sg_platf_build_hostlink(simgrid::kernel::routing::StarZone* zone,
 369                                     const simgrid::kernel::routing::HostLinkCreationArgs* hostlink,
 370                                     const simgrid::s4u::Link* backbone)
 371 {
 372   const auto engine = simgrid::s4u::Engine::get_instance();
 373   auto netpoint     = engine->host_by_name(hostlink->id)->get_netpoint();
 374   xbt_assert(netpoint, "Host '%s' not found!", hostlink->id.c_str());
 375
 376   const auto linkUp   = engine->link_by_name_or_null(hostlink->link_up);
 377   const auto linkDown = engine->link_by_name_or_null(hostlink->link_down);
 378
 379   xbt_assert(linkUp, "Link '%s' not found!", hostlink->link_up.c_str());
 380   xbt_assert(linkDown, "Link '%s' not found!", hostlink->link_down.c_str());
 381   sg_platf_cluster_set_hostlink(zone, netpoint, linkUp, linkDown, backbone);
 382 }
 383
 384 /** @brief Create a cabinet (set of hosts) inside a Cluster(StarZone) */
 385 static void sg_platf_build_cabinet(simgrid::kernel::routing::StarZone* zone,
 386                                    const simgrid::kernel::routing::CabinetCreationArgs* args,
 387                                    const simgrid::s4u::Link* backbone)
 388 {
 389   for (int const& radical : args->radicals) {
 390     std::string id   = args->prefix + std::to_string(radical) + args->suffix;
 391     auto const* host = zone->create_host(id, {args->speed})->seal();
 392
 393     const auto* link_up   = zone->create_link("link_" + id + "_UP", {args->bw})->set_latency(args->lat)->seal();
 394     const auto* link_down = zone->create_link("link_" + id + "_DOWN", {args->bw})->set_latency(args->lat)->seal();
 395
 396     sg_platf_cluster_set_hostlink(zone, host->get_netpoint(), link_up, link_down, backbone);
 397   }
 398 }
 399
 400 static void sg_platf_zone_cluster_populate(const simgrid::kernel::routing::ClusterZoneCreationArgs* cluster)
 401 {
 402   auto* zone = dynamic_cast<simgrid::kernel::routing::StarZone*>(current_routing);
 403   xbt_assert(zone, "Host_links are only valid for Cluster(Star)");
 404
 405   const simgrid::s4u::Link* backbone = nullptr;
 406   /* create backbone */
 407   if (cluster->backbone) {
 408     sg_platf_new_link(cluster->backbone.get());
 409     backbone = simgrid::s4u::Link::by_name(cluster->backbone->id);
 410   }
 411
 412   /* create host_links for hosts */
 413   for (auto const& hostlink : cluster->host_links) {
 414     sg_platf_build_hostlink(zone, &hostlink, backbone);
 415   }
 416
 417   /* create cabinets */
 418   for (auto const& cabinet : cluster->cabinets) {
 419     sg_platf_build_cabinet(zone, &cabinet, backbone);
 420   }
 421 }
 422
 423 void routing_cluster_add_backbone(std::unique_ptr<simgrid::kernel::routing::LinkCreationArgs> link)
 424 {
 425   zone_cluster.backbone = std::move(link);
 426 }
 427
 428 void sg_platf_new_cabinet(const simgrid::kernel::routing::CabinetCreationArgs* args)
 429 {
 430   xbt_assert(args, "Invalid nullptr argument");
 431   zone_cluster.cabinets.emplace_back(*args);
 432 }
 433
 434 /*************************************************************************************************/
 435 void sg_platf_new_route(simgrid::kernel::routing::RouteCreationArgs* route)
 436 {
 437   current_routing->add_route(route->src, route->dst, route->gw_src, route->gw_dst, route->link_list,
 438                              route->symmetrical);
 439 }
 440
 441 void sg_platf_new_bypass_route(simgrid::kernel::routing::RouteCreationArgs* route)
 442 {
 443   current_routing->add_bypass_route(route->src, route->dst, route->gw_src, route->gw_dst, route->link_list);
 444 }
 445
 446 void sg_platf_new_actor(simgrid::kernel::routing::ActorCreationArgs* actor)
 447 {
 448   const auto* engine = simgrid::s4u::Engine::get_instance();
 449   sg_host_t host = sg_host_by_name(actor->host);
 450   if (not host) {
 451     // The requested host does not exist. Do a nice message to the user
 452     std::string msg = std::string("Cannot create actor '") + actor->function + "': host '" + actor->host +
 453                       "' does not exist\nExisting hosts: '";
 454
 455     std::vector<simgrid::s4u::Host*> list = engine->get_all_hosts();
 456
 457     for (auto const& some_host : list) {
 458       msg += some_host->get_name();
 459       msg += "', '";
 460       if (msg.length() > 1024) {
 461         msg.pop_back(); // remove trailing quote
 462         msg += "...(list truncated)......";
 463         break;
 464       }
 465     }
 466     xbt_die("%s", msg.c_str());
 467   }
 468   const simgrid::kernel::actor::ActorCodeFactory& factory = engine->get_impl()->get_function(actor->function);
 469   xbt_assert(factory, "Error while creating an actor from the XML file: Function '%s' not registered", actor->function);
 470
 471   double start_time = actor->start_time;
 472   double kill_time  = actor->kill_time;
 473   bool auto_restart = actor->restart_on_failure;
 474
 475   std::string actor_name                 = actor->args[0];
 476   simgrid::kernel::actor::ActorCode code = factory(std::move(actor->args));
 477
 478   auto* arg = new simgrid::kernel::actor::ProcessArg(actor_name, code, nullptr, host, kill_time, actor->properties,
 479                                                      auto_restart, /*daemon=*/false, /*restart_count=*/0);
 480
 481   host->get_impl()->add_actor_at_boot(arg);
 482
 483   if (start_time > simgrid::s4u::Engine::get_clock()) {
 484     arg = new simgrid::kernel::actor::ProcessArg(actor_name, code, nullptr, host, kill_time, actor->properties,
 485                                                  auto_restart, /*daemon=*/false, /*restart_count=*/0);
 486
 487     XBT_DEBUG("Actor %s@%s will be started at time %f", arg->name.c_str(), arg->host->get_cname(), start_time);
 488     simgrid::kernel::timer::Timer::set(start_time, [arg]() {
 489       simgrid::kernel::actor::ActorImplPtr new_actor = simgrid::kernel::actor::ActorImpl::create(arg);
 490       delete arg;
 491     });
 492   } else { // start_time <= simgrid::s4u::Engine::get_clock()
 493     XBT_DEBUG("Starting actor %s(%s) right now", arg->name.c_str(), host->get_cname());
 494
 495     try {
 496       simgrid::kernel::actor::ActorImplPtr new_actor = simgrid::kernel::actor::ActorImpl::create(arg);
 497     } catch (simgrid::HostFailureException const&) {
 498       XBT_WARN("Starting actor %s(%s) failed because its host is turned off.", arg->name.c_str(), host->get_cname());
 499     }
 500   }
 501 }
 502
 503 /**
 504  * @brief Auxiliary function to build the object NetZoneImpl
 505  *
 506  * Builds the objects, setting its parent properties and root netzone if needed
 507  * @param zone the parameters defining the Zone to build.
 508  * @return Pointer to recently created netzone
 509  */
 510 static simgrid::kernel::routing::NetZoneImpl*
 511 sg_platf_create_zone(const simgrid::kernel::routing::ZoneCreationArgs* zone)
 512 {
 513   /* search the routing model */
 514   const simgrid::s4u::NetZone* new_zone = nullptr;
 515
 516   if (strcasecmp(zone->routing.c_str(), "Cluster") == 0) {
 517     new_zone = simgrid::s4u::create_star_zone(zone->id);
 518   } else if (strcasecmp(zone->routing.c_str(), "Dijkstra") == 0) {
 519     new_zone = simgrid::s4u::create_dijkstra_zone(zone->id, false);
 520   } else if (strcasecmp(zone->routing.c_str(), "DijkstraCache") == 0) {
 521     new_zone = simgrid::s4u::create_dijkstra_zone(zone->id, true);
 522   } else if (strcasecmp(zone->routing.c_str(), "Floyd") == 0) {
 523     new_zone = simgrid::s4u::create_floyd_zone(zone->id);
 524   } else if (strcasecmp(zone->routing.c_str(), "Full") == 0) {
 525     new_zone = simgrid::s4u::create_full_zone(zone->id);
 526   } else if (strcasecmp(zone->routing.c_str(), "None") == 0) {
 527     new_zone = simgrid::s4u::create_empty_zone(zone->id);
 528   } else if (strcasecmp(zone->routing.c_str(), "Vivaldi") == 0) {
 529     new_zone = simgrid::s4u::create_vivaldi_zone(zone->id);
 530   } else if (strcasecmp(zone->routing.c_str(), "Wifi") == 0) {
 531     new_zone = simgrid::s4u::create_wifi_zone(zone->id);
 532   } else {
 533     xbt_die("Not a valid model!");
 534   }
 535
 536   simgrid::kernel::routing::NetZoneImpl* new_zone_impl = new_zone->get_impl();
 537   new_zone_impl->set_parent(current_routing);
 538
 539   return new_zone_impl;
 540 }
 541
 542 /**
 543  * @brief Add a Zone to the platform
 544  *
 545  * Add a new autonomous system to the platform. Any elements (such as host, router or sub-Zone) added after this call
 546  * and before the corresponding call to sg_platf_new_zone_seal() will be added to this Zone.
 547  *
 548  * Once this function was called, the configuration concerning the used models cannot be changed anymore.
 549  *
 550  * @param zone the parameters defining the Zone to build.
 551  */
 552 simgrid::kernel::routing::NetZoneImpl* sg_platf_new_zone_begin(const simgrid::kernel::routing::ZoneCreationArgs* zone)
 553 {
 554   zone_cluster.routing = zone->routing;
 555   current_routing      = sg_platf_create_zone(zone);
 556
 557   return current_routing;
 558 }
 559
 560 void sg_platf_new_zone_set_properties(const std::unordered_map<std::string, std::string>& props)
 561 {
 562   xbt_assert(current_routing, "Cannot set properties of the current Zone: none under construction");
 563
 564   current_routing->set_properties(props);
 565 }
 566
 567 /**
 568  * @brief Specify that the description of the current Zone is finished
 569  *
 570  * Once you've declared all the content of your Zone, you have to seal
 571  * it with this call. Your Zone is not usable until you call this function.
 572  */
 573 void sg_platf_new_zone_seal()
 574 {
 575   xbt_assert(current_routing, "Cannot seal the current Zone: none under construction");
 576   if (strcasecmp(zone_cluster.routing.c_str(), "Cluster") == 0) {
 577     sg_platf_zone_cluster_populate(&zone_cluster);
 578     zone_cluster.routing = "";
 579     zone_cluster.host_links.clear();
 580     zone_cluster.cabinets.clear();
 581     zone_cluster.backbone.reset();
 582   }
 583   current_routing = current_routing->get_parent();
 584 }
 585
 586 /** @brief Add a link connecting a host to the rest of its Zone (which must be cluster or vivaldi) */
 587 void sg_platf_new_hostlink(const simgrid::kernel::routing::HostLinkCreationArgs* hostlink)
 588 {
 589   xbt_assert(hostlink, "Invalid nullptr parameter");
 590   zone_cluster.host_links.emplace_back(*hostlink);
 591 }
 592
 593 void sg_platf_new_trace(const simgrid::kernel::routing::ProfileCreationArgs* args)
 594 {
 595   simgrid::kernel::profile::Profile* profile;
 596   if (not args->file.empty()) {
 597     profile = simgrid::kernel::profile::ProfileBuilder::from_file(args->file);
 598   } else {
 599     xbt_assert(not args->pc_data.empty(), "Trace '%s' must have either a content, or point to a file on disk.",
 600                args->id.c_str());
 601     profile = simgrid::kernel::profile::ProfileBuilder::from_string(args->id, args->pc_data, args->periodicity);
 602   }
 603   traces_set_list.try_emplace(args->id, profile);
 604 }