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 /* This file implements the public API to platform parsing                  */
   7
   8 #include <simgrid/Exception.hpp>
   9 #include <simgrid/kernel/routing/DijkstraZone.hpp>
  10 #include <simgrid/kernel/routing/DragonflyZone.hpp>
  11 #include <simgrid/kernel/routing/EmptyZone.hpp>
  12 #include <simgrid/kernel/routing/FatTreeZone.hpp>
  13 #include <simgrid/kernel/routing/FloydZone.hpp>
  14 #include <simgrid/kernel/routing/FullZone.hpp>
  15 #include <simgrid/kernel/routing/NetPoint.hpp>
  16 #include <simgrid/kernel/routing/NetZoneImpl.hpp>
  17 #include <simgrid/kernel/routing/TorusZone.hpp>
  18 #include <simgrid/kernel/routing/VivaldiZone.hpp>
  19 #include <simgrid/kernel/routing/WifiZone.hpp>
  20 #include <simgrid/s4u/Engine.hpp>
  21 #include <simgrid/s4u/NetZone.hpp>
  22
  23 #include "src/kernel/EngineImpl.hpp"
  24 #include "src/kernel/resource/DiskImpl.hpp"
  25 #include "src/kernel/resource/HostImpl.hpp"
  26 #include "src/kernel/resource/StandardLinkImpl.hpp"
  27 #include "src/kernel/resource/profile/Profile.hpp"
  28 #include "src/kernel/xml/platf.hpp"
  29 #include "src/kernel/xml/platf_private.hpp"
  30 #include "src/simgrid/sg_config.hpp"
  31
  32 #include <algorithm>
  33 #include <string>
  34
  35 XBT_LOG_EXTERNAL_DEFAULT_CATEGORY(platf_parse);
  36
  37 /* This function acts as a main in the parsing area. */
  38 void parse_platform_file(const std::string& file)
  39 {
  40   /* init the flex parser */
  41   simgrid_parse_open(file);
  42
  43   /* Do the actual parsing */
  44   simgrid_parse(true);
  45
  46   simgrid_parse_close();
  47 }
  48
  49 namespace simgrid::kernel::routing {
  50 xbt::signal<void(ClusterCreationArgs const&)> on_cluster_creation;
  51 } // namespace simgrid::kernel::routing
  52
  53 static simgrid::kernel::routing::ClusterZoneCreationArgs
  54     zone_cluster; /* temporary store data for irregular clusters, created with <zone routing="Cluster"> */
  55
  56 /** The current NetZone in the parsing */
  57 static simgrid::kernel::routing::NetZoneImpl* current_routing = nullptr;
  58 static simgrid::s4u::Host* current_host                       = nullptr;
  59
  60 /** Module management function: frees all internal data structures */
  61 void sg_platf_parser_finalize()
  62 {
  63   simgrid::kernel::routing::on_cluster_creation.disconnect_slots();
  64
  65   simgrid_parse_lex_destroy();
  66 }
  67
  68 /** @brief Add a host to the current NetZone */
  69 void sg_platf_new_host_begin(const simgrid::kernel::routing::HostCreationArgs* args)
  70 {
  71   current_host = current_routing->create_host(args->id, args->speed_per_pstate)
  72                      ->set_coordinates(args->coord)
  73                      ->set_core_count(args->core_amount)
  74                      ->set_state_profile(args->state_trace)
  75                      ->set_speed_profile(args->speed_trace);
  76 }
  77
  78 void sg_platf_new_host_set_properties(const std::unordered_map<std::string, std::string>& props)
  79 {
  80   xbt_assert(current_host, "Cannot set properties of the current host: none under construction");
  81   current_host->set_properties(props);
  82 }
  83
  84 void sg_platf_new_host_seal(int pstate)
  85 {
  86   xbt_assert(current_host, "Cannot seal the current Host: none under construction");
  87   current_host->seal();
  88
  89   /* When energy plugin is activated, changing the pstate requires to already have the HostEnergy extension whose
  90    * allocation is triggered by the on_creation signal. Then set_pstate must be called after the signal emission */
  91
  92   if (pstate != 0)
  93     current_host->set_pstate(pstate);
  94
  95   current_host = nullptr;
  96 }
  97
  98 void sg_platf_new_peer(const simgrid::kernel::routing::PeerCreationArgs* args)
  99 {
 100   auto* zone = dynamic_cast<simgrid::kernel::routing::VivaldiZone*>(current_routing);
 101   xbt_assert(zone, "<peer> tag can only be used in Vivaldi netzones.");
 102
 103   const auto* peer = zone->create_host(args->id, {args->speed})
 104                          ->set_state_profile(args->state_trace)
 105                          ->set_speed_profile(args->speed_trace)
 106                          ->set_coordinates(args->coord)
 107                          ->seal();
 108
 109   zone->set_peer_link(peer->get_netpoint(), args->bw_in, args->bw_out);
 110 }
 111
 112 /** @brief Add a "router" to the network element list */
 113 simgrid::kernel::routing::NetPoint* sg_platf_new_router(const std::string& name, const std::string& coords)
 114 {
 115   auto* netpoint = current_routing->create_router(name)->set_coordinates(coords);
 116   XBT_DEBUG("Router '%s' has the id %lu", netpoint->get_cname(), netpoint->id());
 117
 118   return netpoint;
 119 }
 120
 121 void sg_platf_new_link(const simgrid::kernel::routing::LinkCreationArgs* args)
 122 {
 123   simgrid::s4u::Link* link;
 124   if (args->policy == simgrid::s4u::Link::SharingPolicy::SPLITDUPLEX) {
 125     link = current_routing->create_split_duplex_link(args->id, args->bandwidths);
 126   } else {
 127     link = current_routing->create_link(args->id, args->bandwidths);
 128     link->get_impl()->set_sharing_policy(args->policy, {});
 129   }
 130
 131   link->set_properties(args->properties)
 132       ->set_state_profile(args->state_trace)
 133       ->set_latency_profile(args->latency_trace)
 134       ->set_bandwidth_profile(args->bandwidth_trace)
 135       ->set_latency(args->latency);
 136
 137   link->seal();
 138 }
 139
 140 void sg_platf_new_disk(const simgrid::kernel::routing::DiskCreationArgs* disk)
 141 {
 142   const simgrid::s4u::Disk* new_disk = current_routing->create_disk(disk->id, disk->read_bw, disk->write_bw)
 143                                            ->set_host(current_host)
 144                                            ->set_properties(disk->properties)
 145                                            ->seal();
 146
 147   current_host->add_disk(new_disk);
 148 }
 149
 150 /*************************************************************************************************/
 151 /** @brief Auxiliary function to create hosts */
 152 static std::pair<simgrid::kernel::routing::NetPoint*, simgrid::kernel::routing::NetPoint*>
 153 sg_platf_cluster_create_host(const simgrid::kernel::routing::ClusterCreationArgs* cluster, simgrid::s4u::NetZone* zone,
 154                              const std::vector<unsigned long>& /*coord*/, unsigned long id)
 155 {
 156   xbt_assert(static_cast<unsigned long>(id) < cluster->radicals.size(),
 157              "Zone(%s): error when creating host number %lu in the zone. Insufficient number of radicals available "
 158              "(total = %zu). Check the 'radical' parameter in XML",
 159              cluster->id.c_str(), id, cluster->radicals.size());
 160
 161   std::string host_id = cluster->prefix + std::to_string(cluster->radicals[id]) + cluster->suffix;
 162   XBT_DEBUG("Cluster: creating host=%s speed=%f", host_id.c_str(), cluster->speeds.front());
 163   const simgrid::s4u::Host* host = zone->create_host(host_id, cluster->speeds)
 164                                        ->set_core_count(cluster->core_amount)
 165                                        ->set_properties(cluster->properties)
 166                                        ->seal();
 167   return std::make_pair(host->get_netpoint(), nullptr);
 168 }
 169
 170 /** @brief Auxiliary function to create loopback links */
 171 static simgrid::s4u::Link*
 172 sg_platf_cluster_create_loopback(const simgrid::kernel::routing::ClusterCreationArgs* cluster,
 173                                  simgrid::s4u::NetZone* zone, const std::vector<unsigned long>& /*coord*/,
 174                                  unsigned long id)
 175 {
 176   xbt_assert(static_cast<unsigned long>(id) < cluster->radicals.size(),
 177              "Zone(%s): error when creating loopback for host number %lu in the zone. Insufficient number of "
 178              "radicals available "
 179              "(total = %zu). Check the 'radical' parameter in XML",
 180              cluster->id.c_str(), id, cluster->radicals.size());
 181
 182   std::string link_id = cluster->id + "_link_" + std::to_string(cluster->radicals[id]) + "_loopback";
 183   XBT_DEBUG("Cluster: creating loopback link=%s bw=%f", link_id.c_str(), cluster->loopback_bw);
 184
 185   simgrid::s4u::Link* loopback = zone->create_link(link_id, cluster->loopback_bw)
 186                                      ->set_sharing_policy(simgrid::s4u::Link::SharingPolicy::FATPIPE)
 187                                      ->set_latency(cluster->loopback_lat)
 188                                      ->seal();
 189   return loopback;
 190 }
 191
 192 /** @brief Auxiliary function to create limiter links */
 193 static simgrid::s4u::Link* sg_platf_cluster_create_limiter(const simgrid::kernel::routing::ClusterCreationArgs* cluster,
 194                                                            simgrid::s4u::NetZone* zone,
 195                                                            const std::vector<unsigned long>& /*coord*/,
 196                                                            unsigned long id)
 197 {
 198   std::string link_id = cluster->id + "_link_" + std::to_string(id) + "_limiter";
 199   XBT_DEBUG("Cluster: creating limiter link=%s bw=%f", link_id.c_str(), cluster->limiter_link);
 200
 201   simgrid::s4u::Link* limiter = zone->create_link(link_id, cluster->limiter_link)->seal();
 202   return limiter;
 203 }
 204
 205 /** @brief Create Torus, Fat-Tree and Dragonfly clusters */
 206 static void sg_platf_new_cluster_hierarchical(const simgrid::kernel::routing::ClusterCreationArgs* cluster)
 207 {
 208   using namespace std::placeholders;
 209   using simgrid::kernel::routing::DragonflyZone;
 210   using simgrid::kernel::routing::FatTreeZone;
 211   using simgrid::kernel::routing::TorusZone;
 212
 213   auto set_host = std::bind(sg_platf_cluster_create_host, cluster, _1, _2, _3);
 214   std::function<simgrid::s4u::ClusterCallbacks::ClusterLinkCb> set_loopback{};
 215   std::function<simgrid::s4u::ClusterCallbacks::ClusterLinkCb> set_limiter{};
 216
 217   if (cluster->loopback_bw > 0 || cluster->loopback_lat > 0) {
 218     set_loopback = std::bind(sg_platf_cluster_create_loopback, cluster, _1, _2, _3);
 219   }
 220
 221   if (cluster->limiter_link > 0) {
 222     set_limiter = std::bind(sg_platf_cluster_create_limiter, cluster, _1, _2, _3);
 223   }
 224
 225   simgrid::s4u::NetZone const* parent = current_routing ? current_routing->get_iface() : nullptr;
 226   switch (cluster->topology) {
 227     case simgrid::kernel::routing::ClusterTopology::TORUS:
 228       simgrid::s4u::create_torus_zone(cluster->id, parent, TorusZone::parse_topo_parameters(cluster->topo_parameters),
 229                                       {set_host, set_loopback, set_limiter}, cluster->bw, cluster->lat,
 230                                       cluster->sharing_policy);
 231       break;
 232     case simgrid::kernel::routing::ClusterTopology::DRAGONFLY:
 233       simgrid::s4u::create_dragonfly_zone(
 234           cluster->id, parent, DragonflyZone::parse_topo_parameters(cluster->topo_parameters),
 235           {set_host, set_loopback, set_limiter}, cluster->bw, cluster->lat, cluster->sharing_policy);
 236       break;
 237     case simgrid::kernel::routing::ClusterTopology::FAT_TREE:
 238       simgrid::s4u::create_fatTree_zone(
 239           cluster->id, parent, FatTreeZone::parse_topo_parameters(cluster->topo_parameters),
 240           {set_host, set_loopback, set_limiter}, cluster->bw, cluster->lat, cluster->sharing_policy);
 241       break;
 242     default:
 243       THROW_IMPOSSIBLE;
 244   }
 245 }
 246
 247 /*************************************************************************************************/
 248 /** @brief Create regular Cluster */
 249 static void sg_platf_new_cluster_flat(simgrid::kernel::routing::ClusterCreationArgs* cluster)
 250 {
 251   auto* zone = simgrid::s4u::create_star_zone(cluster->id);
 252   if (const auto* parent = current_routing ? current_routing->get_iface() : nullptr)
 253     zone->set_parent(parent);
 254
 255   /* set properties */
 256   for (auto const& [key, value] : cluster->properties)
 257     zone->set_property(key, value);
 258
 259   /* Make the backbone */
 260   const simgrid::s4u::Link* backbone = nullptr;
 261   if ((cluster->bb_bw > 0) || (cluster->bb_lat > 0)) {
 262     std::string bb_name = cluster->id + "_backbone";
 263     XBT_DEBUG("<link\tid=\"%s\" bw=\"%f\" lat=\"%f\"/> <!--backbone -->", bb_name.c_str(), cluster->bb_bw,
 264               cluster->bb_lat);
 265
 266     backbone = zone->create_link(bb_name, cluster->bb_bw)
 267                    ->set_sharing_policy(cluster->bb_sharing_policy)
 268                    ->set_latency(cluster->bb_lat)
 269                    ->seal();
 270   }
 271
 272   for (int const& i : cluster->radicals) {
 273     std::string host_id = cluster->prefix + std::to_string(i) + cluster->suffix;
 274
 275     XBT_DEBUG("<host\tid=\"%s\"\tspeed=\"%f\">", host_id.c_str(), cluster->speeds.front());
 276     const auto* host = zone->create_host(host_id, cluster->speeds)
 277                            ->set_core_count(cluster->core_amount)
 278                            ->set_properties(cluster->properties)
 279                            ->seal();
 280
 281     XBT_DEBUG("</host>");
 282
 283     std::string link_id = cluster->id + "_link_" + std::to_string(i);
 284     XBT_DEBUG("<link\tid=\"%s\"\tbw=\"%f\"\tlat=\"%f\"/>", link_id.c_str(), cluster->bw, cluster->lat);
 285
 286     // add a loopback link
 287     if (cluster->loopback_bw > 0 || cluster->loopback_lat > 0) {
 288       std::string loopback_name = link_id + "_loopback";
 289       XBT_DEBUG("<loopback\tid=\"%s\"\tbw=\"%f\"/>", loopback_name.c_str(), cluster->loopback_bw);
 290
 291       const auto* loopback = zone->create_link(loopback_name, cluster->loopback_bw)
 292                                  ->set_sharing_policy(simgrid::s4u::Link::SharingPolicy::FATPIPE)
 293                                  ->set_latency(cluster->loopback_lat)
 294                                  ->seal();
 295
 296       zone->add_route(host, host, {simgrid::s4u::LinkInRoute(loopback)});
 297     }
 298
 299     // add a limiter link (shared link to account for maximal bandwidth of the node)
 300     const simgrid::s4u::Link* limiter = nullptr;
 301     if (cluster->limiter_link > 0) {
 302       std::string limiter_name = link_id + "_limiter";
 303       XBT_DEBUG("<limiter\tid=\"%s\"\tbw=\"%f\"/>", limiter_name.c_str(), cluster->limiter_link);
 304
 305       limiter = zone->create_link(limiter_name, cluster->limiter_link)->seal();
 306     }
 307
 308     // create link
 309     const simgrid::s4u::Link* link;
 310     if (cluster->sharing_policy == simgrid::s4u::Link::SharingPolicy::SPLITDUPLEX) {
 311       link = zone->create_split_duplex_link(link_id, cluster->bw)->set_latency(cluster->lat)->seal();
 312     } else {
 313       link = zone->create_link(link_id, cluster->bw)->set_latency(cluster->lat)->seal();
 314     }
 315
 316     /* adding routes */
 317     std::vector<simgrid::s4u::LinkInRoute> links;
 318     if (limiter)
 319       links.emplace_back(limiter);
 320     links.emplace_back(link, simgrid::s4u::LinkInRoute::Direction::UP);
 321     if (backbone)
 322       links.emplace_back(backbone);
 323
 324     zone->add_route(host, nullptr, links, true);
 325   }
 326
 327   // Add a router.
 328   XBT_DEBUG(" ");
 329   XBT_DEBUG("<router id=\"%s\"/>", cluster->router_id.c_str());
 330   if (cluster->router_id.empty())
 331     cluster->router_id = cluster->prefix + cluster->id + "_router" + cluster->suffix;
 332   zone->create_router(cluster->router_id);
 333
 334   simgrid::kernel::routing::on_cluster_creation(*cluster);
 335 }
 336
 337 void sg_platf_new_tag_cluster(simgrid::kernel::routing::ClusterCreationArgs* cluster)
 338 {
 339   switch (cluster->topology) {
 340     case simgrid::kernel::routing::ClusterTopology::TORUS:
 341     case simgrid::kernel::routing::ClusterTopology::DRAGONFLY:
 342     case simgrid::kernel::routing::ClusterTopology::FAT_TREE:
 343       sg_platf_new_cluster_hierarchical(cluster);
 344       break;
 345     default:
 346       sg_platf_new_cluster_flat(cluster);
 347       break;
 348   }
 349 }
 350 /*************************************************************************************************/
 351 /** @brief Set the links for internal node inside a Cluster(Star) */
 352 static void sg_platf_cluster_set_hostlink(simgrid::kernel::routing::StarZone* zone,
 353                                           simgrid::kernel::routing::NetPoint* netpoint,
 354                                           const simgrid::s4u::Link* link_up, const simgrid::s4u::Link* link_down,
 355                                           const simgrid::s4u::Link* backbone)
 356 {
 357   XBT_DEBUG("Push Host_link for host '%s' to position %lu", netpoint->get_cname(), netpoint->id());
 358   simgrid::s4u::LinkInRoute linkUp{link_up};
 359   simgrid::s4u::LinkInRoute linkDown{link_down};
 360   if (backbone) {
 361     simgrid::s4u::LinkInRoute linkBB{backbone};
 362     zone->add_route(netpoint, nullptr, nullptr, nullptr, {linkUp, linkBB}, false);
 363     zone->add_route(nullptr, netpoint, nullptr, nullptr, {linkBB, linkDown}, false);
 364   } else {
 365     zone->add_route(netpoint, nullptr, nullptr, nullptr, {linkUp}, false);
 366     zone->add_route(nullptr, netpoint, nullptr, nullptr, {linkDown}, false);
 367   }
 368 }
 369
 370 /** @brief Add a link connecting a host to the rest of its StarZone */
 371 static void sg_platf_build_hostlink(simgrid::kernel::routing::StarZone* zone,
 372                                     const simgrid::kernel::routing::HostLinkCreationArgs* hostlink,
 373                                     const simgrid::s4u::Link* backbone)
 374 {
 375   const auto* engine = simgrid::s4u::Engine::get_instance();
 376   auto* netpoint     = engine->host_by_name(hostlink->id)->get_netpoint();
 377   xbt_assert(netpoint, "Host '%s' not found!", hostlink->id.c_str());
 378
 379   const auto* linkUp   = engine->link_by_name_or_null(hostlink->link_up);
 380   const auto* linkDown = engine->link_by_name_or_null(hostlink->link_down);
 381
 382   xbt_assert(linkUp, "Link '%s' not found!", hostlink->link_up.c_str());
 383   xbt_assert(linkDown, "Link '%s' not found!", hostlink->link_down.c_str());
 384   sg_platf_cluster_set_hostlink(zone, netpoint, linkUp, linkDown, backbone);
 385 }
 386
 387 /** @brief Create a cabinet (set of hosts) inside a Cluster(StarZone) */
 388 static void sg_platf_build_cabinet(simgrid::kernel::routing::StarZone* zone,
 389                                    const simgrid::kernel::routing::CabinetCreationArgs* args,
 390                                    const simgrid::s4u::Link* backbone)
 391 {
 392   for (int const& radical : args->radicals) {
 393     std::string id   = args->prefix + std::to_string(radical) + args->suffix;
 394     auto const* host = zone->create_host(id, {args->speed})->seal();
 395
 396     const auto* link_up   = zone->create_link("link_" + id + "_UP", {args->bw})->set_latency(args->lat)->seal();
 397     const auto* link_down = zone->create_link("link_" + id + "_DOWN", {args->bw})->set_latency(args->lat)->seal();
 398
 399     sg_platf_cluster_set_hostlink(zone, host->get_netpoint(), link_up, link_down, backbone);
 400   }
 401 }
 402
 403 static void sg_platf_zone_cluster_populate(const simgrid::kernel::routing::ClusterZoneCreationArgs* cluster)
 404 {
 405   auto* zone = dynamic_cast<simgrid::kernel::routing::StarZone*>(current_routing);
 406   xbt_assert(zone, "Host_links are only valid for Cluster(Star)");
 407
 408   const simgrid::s4u::Link* backbone = nullptr;
 409   /* create backbone */
 410   if (cluster->backbone) {
 411     sg_platf_new_link(cluster->backbone.get());
 412     backbone = simgrid::s4u::Link::by_name(cluster->backbone->id);
 413   }
 414
 415   /* create host_links for hosts */
 416   for (auto const& hostlink : cluster->host_links) {
 417     sg_platf_build_hostlink(zone, &hostlink, backbone);
 418   }
 419
 420   /* create cabinets */
 421   for (auto const& cabinet : cluster->cabinets) {
 422     sg_platf_build_cabinet(zone, &cabinet, backbone);
 423   }
 424 }
 425
 426 void routing_cluster_add_backbone(std::unique_ptr<simgrid::kernel::routing::LinkCreationArgs> link)
 427 {
 428   zone_cluster.backbone = std::move(link);
 429 }
 430
 431 void sg_platf_new_cabinet(const simgrid::kernel::routing::CabinetCreationArgs* args)
 432 {
 433   xbt_assert(args, "Invalid nullptr argument");
 434   zone_cluster.cabinets.emplace_back(*args);
 435 }
 436
 437 /*************************************************************************************************/
 438 void sg_platf_new_route(simgrid::kernel::routing::RouteCreationArgs* route)
 439 {
 440   current_routing->add_route(route->src, route->dst, route->gw_src, route->gw_dst, route->link_list,
 441                              route->symmetrical);
 442 }
 443
 444 void sg_platf_new_bypass_route(simgrid::kernel::routing::RouteCreationArgs* route)
 445 {
 446   current_routing->add_bypass_route(route->src, route->dst, route->gw_src, route->gw_dst, route->link_list);
 447 }
 448
 449 void sg_platf_new_actor(simgrid::kernel::routing::ActorCreationArgs* actor)
 450 {
 451   const auto* engine = simgrid::s4u::Engine::get_instance();
 452   sg_host_t host     = sg_host_by_name(actor->host);
 453   if (not host) {
 454     // The requested host does not exist. Do a nice message to the user
 455     std::string msg = std::string("Cannot create actor '") + actor->function + "': host '" + actor->host +
 456                       "' does not exist\nExisting hosts: '";
 457
 458     std::vector<simgrid::s4u::Host*> list = engine->get_all_hosts();
 459
 460     for (auto const& some_host : list) {
 461       msg += some_host->get_name();
 462       msg += "', '";
 463       if (msg.length() > 1024) {
 464         msg.pop_back(); // remove trailing quote
 465         msg += "...(list truncated)......";
 466         break;
 467       }
 468     }
 469     xbt_die("%s", msg.c_str());
 470   }
 471   const simgrid::kernel::actor::ActorCodeFactory& factory = engine->get_impl()->get_function(actor->function);
 472   xbt_assert(factory, "Error while creating an actor from the XML file: Function '%s' not registered", actor->function);
 473
 474   double start_time = actor->start_time;
 475   double kill_time  = actor->kill_time;
 476   bool auto_restart = actor->restart_on_failure;
 477
 478   std::string actor_name                 = actor->args[0];
 479   simgrid::kernel::actor::ActorCode code = factory(std::move(actor->args));
 480
 481   auto* arg = new simgrid::kernel::actor::ProcessArg(actor_name, code, nullptr, host, kill_time, actor->properties,
 482                                                      auto_restart, /*daemon=*/false, /*restart_count=*/0);
 483
 484   host->get_impl()->add_actor_at_boot(arg);
 485
 486   if (start_time > simgrid::s4u::Engine::get_clock()) {
 487     arg = new simgrid::kernel::actor::ProcessArg(actor_name, code, nullptr, host, kill_time, actor->properties,
 488                                                  auto_restart, /*daemon=*/false, /*restart_count=*/0);
 489
 490     XBT_DEBUG("Actor %s@%s will be started at time %f", arg->name.c_str(), arg->host->get_cname(), start_time);
 491     simgrid::kernel::timer::Timer::set(start_time, [arg]() {
 492       simgrid::kernel::actor::ActorImplPtr new_actor = simgrid::kernel::actor::ActorImpl::create(arg);
 493       delete arg;
 494     });
 495   } else { // start_time <= simgrid::s4u::Engine::get_clock()
 496     XBT_DEBUG("Starting actor %s(%s) right now", arg->name.c_str(), host->get_cname());
 497
 498     try {
 499       simgrid::kernel::actor::ActorImplPtr new_actor = simgrid::kernel::actor::ActorImpl::create(arg);
 500     } catch (simgrid::HostFailureException const&) {
 501       XBT_WARN("Starting actor %s(%s) failed because its host is turned off.", arg->name.c_str(), host->get_cname());
 502     }
 503   }
 504 }
 505
 506 /**
 507  * @brief Auxiliary function to build the object NetZoneImpl
 508  *
 509  * Builds the objects, setting its parent properties and root netzone if needed
 510  * @param zone the parameters defining the Zone to build.
 511  * @return Pointer to recently created netzone
 512  */
 513 static simgrid::kernel::routing::NetZoneImpl*
 514 sg_platf_create_zone(const simgrid::kernel::routing::ZoneCreationArgs* zone)
 515 {
 516   /* search the routing model */
 517   const simgrid::s4u::NetZone* new_zone = nullptr;
 518
 519   if (strcasecmp(zone->routing.c_str(), "Cluster") == 0) {
 520     new_zone = simgrid::s4u::create_star_zone(zone->id);
 521   } else if (strcasecmp(zone->routing.c_str(), "Dijkstra") == 0) {
 522     new_zone = simgrid::s4u::create_dijkstra_zone(zone->id, false);
 523   } else if (strcasecmp(zone->routing.c_str(), "DijkstraCache") == 0) {
 524     new_zone = simgrid::s4u::create_dijkstra_zone(zone->id, true);
 525   } else if (strcasecmp(zone->routing.c_str(), "Floyd") == 0) {
 526     new_zone = simgrid::s4u::create_floyd_zone(zone->id);
 527   } else if (strcasecmp(zone->routing.c_str(), "Full") == 0) {
 528     new_zone = simgrid::s4u::create_full_zone(zone->id);
 529   } else if (strcasecmp(zone->routing.c_str(), "None") == 0) {
 530     new_zone = simgrid::s4u::create_empty_zone(zone->id);
 531   } else if (strcasecmp(zone->routing.c_str(), "Vivaldi") == 0) {
 532     new_zone = simgrid::s4u::create_vivaldi_zone(zone->id);
 533   } else if (strcasecmp(zone->routing.c_str(), "Wifi") == 0) {
 534     new_zone = simgrid::s4u::create_wifi_zone(zone->id);
 535   } else {
 536     xbt_die("Not a valid model!");
 537   }
 538
 539   simgrid::kernel::routing::NetZoneImpl* new_zone_impl = new_zone->get_impl();
 540   new_zone_impl->set_parent(current_routing);
 541
 542   return new_zone_impl;
 543 }
 544
 545 /**
 546  * @brief Add a Zone to the platform
 547  *
 548  * Add a new autonomous system to the platform. Any elements (such as host, router or sub-Zone) added after this call
 549  * and before the corresponding call to sg_platf_new_zone_seal() will be added to this Zone.
 550  *
 551  * Once this function was called, the configuration concerning the used models cannot be changed anymore.
 552  *
 553  * @param zone the parameters defining the Zone to build.
 554  */
 555 simgrid::kernel::routing::NetZoneImpl* sg_platf_new_zone_begin(const simgrid::kernel::routing::ZoneCreationArgs* zone)
 556 {
 557   zone_cluster.routing = zone->routing;
 558   current_routing      = sg_platf_create_zone(zone);
 559
 560   return current_routing;
 561 }
 562
 563 void sg_platf_new_zone_set_properties(const std::unordered_map<std::string, std::string>& props)
 564 {
 565   xbt_assert(current_routing, "Cannot set properties of the current Zone: none under construction");
 566
 567   current_routing->set_properties(props);
 568 }
 569
 570 /**
 571  * @brief Specify that the description of the current Zone is finished
 572  *
 573  * Once you've declared all the content of your Zone, you have to seal
 574  * it with this call. Your Zone is not usable until you call this function.
 575  */
 576 void sg_platf_new_zone_seal()
 577 {
 578   xbt_assert(current_routing, "Cannot seal the current Zone: none under construction");
 579   if (strcasecmp(zone_cluster.routing.c_str(), "Cluster") == 0) {
 580     sg_platf_zone_cluster_populate(&zone_cluster);
 581     zone_cluster.routing = "";
 582     zone_cluster.host_links.clear();
 583     zone_cluster.cabinets.clear();
 584     zone_cluster.backbone.reset();
 585   }
 586   current_routing = current_routing->get_parent();
 587 }
 588
 589 /** @brief Add a link connecting a host to the rest of its Zone (which must be cluster or vivaldi) */
 590 void sg_platf_new_hostlink(const simgrid::kernel::routing::HostLinkCreationArgs* hostlink)
 591 {
 592   xbt_assert(hostlink, "Invalid nullptr parameter");
 593   zone_cluster.host_links.emplace_back(*hostlink);
 594 }
 595
 596 void sg_platf_new_trace(const simgrid::kernel::routing::ProfileCreationArgs* args)
 597 {
 598   simgrid::kernel::profile::Profile* profile;
 599   if (not args->file.empty()) {
 600     profile = simgrid::kernel::profile::ProfileBuilder::from_file(args->file);
 601   } else {
 602     xbt_assert(not args->pc_data.empty(), "Trace '%s' must have either a content, or point to a file on disk.",
 603                args->id.c_str());
 604     profile = simgrid::kernel::profile::ProfileBuilder::from_string(args->id, args->pc_data, args->periodicity);
 605   }
 606   traces_set_list.try_emplace(args->id, profile);
 607 }