src/surf/sg_platf.cpp

   1 /* Copyright (c) 2006-2014. The SimGrid Team.
   2  * All rights reserved.                                                     */
   3
   4 /* This program is free software; you can redistribute it and/or modify it
   5  * under the terms of the license (GNU LGPL) which comes with this package. */
   6
   7 #include "simgrid/s4u/engine.hpp"
   8 #include "src/kernel/EngineImpl.hpp"
   9 #include "src/simix/smx_private.h"
  10
  11 #include "src/include/simgrid/sg_config.h"
  12
  13 #include "src/surf/HostImpl.hpp"
  14 #include "src/surf/cpu_interface.hpp"
  15 #include "src/surf/network_interface.hpp"
  16
  17 #include "src/kernel/routing/ClusterZone.hpp"
  18 #include "src/kernel/routing/DijkstraZone.hpp"
  19 #include "src/kernel/routing/DragonflyZone.hpp"
  20 #include "src/kernel/routing/EmptyZone.hpp"
  21 #include "src/kernel/routing/FatTreeZone.hpp"
  22 #include "src/kernel/routing/FloydZone.hpp"
  23 #include "src/kernel/routing/FullZone.hpp"
  24 #include "src/kernel/routing/NetCard.hpp"
  25 #include "src/kernel/routing/NetZoneImpl.hpp"
  26 #include "src/kernel/routing/TorusZone.hpp"
  27 #include "src/kernel/routing/VivaldiZone.hpp"
  28
  29 XBT_LOG_EXTERNAL_DEFAULT_CATEGORY(surf_parse);
  30
  31 XBT_PRIVATE xbt_dynar_t mount_list = nullptr;
  32
  33 namespace simgrid {
  34 namespace surf {
  35
  36 simgrid::xbt::signal<void(sg_platf_cluster_cbarg_t)> on_cluster;
  37 simgrid::xbt::signal<void(void)> on_postparse;
  38
  39 }
  40 }
  41
  42 static int surf_parse_models_setup_already_called = 0;
  43
  44 /** The current AS in the parsing */
  45 static simgrid::kernel::routing::NetZoneImpl* current_routing = nullptr;
  46 static simgrid::kernel::routing::NetZoneImpl* routing_get_current()
  47 {
  48   return current_routing;
  49 }
  50
  51 /** Module management function: creates all internal data structures */
  52 void sg_platf_init() {
  53 }
  54
  55 /** Module management function: frees all internal data structures */
  56 void sg_platf_exit() {
  57   simgrid::surf::on_cluster.disconnect_all_slots();
  58   simgrid::surf::on_postparse.disconnect_all_slots();
  59
  60   /* make sure that we will reinit the models while loading the platf once reinited */
  61   surf_parse_models_setup_already_called = 0;
  62   surf_parse_lex_destroy();
  63 }
  64
  65 /** @brief Add an host to the current AS */
  66 void sg_platf_new_host(sg_platf_host_cbarg_t args)
  67 {
  68   simgrid::s4u::Host* host = routing_get_current()->createHost(args->id, &args->speed_per_pstate, args->core_amount);
  69
  70   new simgrid::surf::HostImpl(host, mount_list);
  71   xbt_lib_set(storage_lib, args->id, ROUTING_STORAGE_HOST_LEVEL, static_cast<void*>(mount_list));
  72   mount_list = nullptr;
  73
  74   if (args->properties) {
  75     xbt_dict_cursor_t cursor=nullptr;
  76     char *key,*data;
  77     xbt_dict_foreach (args->properties, cursor, key, data)
  78       host->setProperty(key, data);
  79     xbt_dict_free(&args->properties);
  80   }
  81
  82   /* Change from the defaults */
  83   if (args->state_trace)
  84     host->pimpl_cpu->setStateTrace(args->state_trace);
  85   if (args->speed_trace)
  86     host->pimpl_cpu->setSpeedTrace(args->speed_trace);
  87   if (args->pstate != 0)
  88     host->pimpl_cpu->setPState(args->pstate);
  89   if (args->coord && strcmp(args->coord, ""))
  90     new simgrid::kernel::routing::vivaldi::Coords(host->pimpl_netcard, args->coord);
  91
  92   simgrid::s4u::Host::onCreation(*host);
  93
  94   if (TRACE_is_enabled() && TRACE_needs_platform())
  95     sg_instr_new_host(*host);
  96 }
  97
  98 /** @brief Add a "router" to the network element list */
  99 void sg_platf_new_router(sg_platf_router_cbarg_t router)
 100 {
 101   simgrid::kernel::routing::NetZoneImpl* current_routing = routing_get_current();
 102
 103   if (current_routing->hierarchy_ == simgrid::kernel::routing::NetZoneImpl::RoutingMode::unset)
 104     current_routing->hierarchy_ = simgrid::kernel::routing::NetZoneImpl::RoutingMode::base;
 105   xbt_assert(nullptr == simgrid::s4u::Engine::instance()->netcardByNameOrNull(router->id),
 106              "Refusing to create a router named '%s': this name already describes a node.", router->id);
 107
 108   simgrid::kernel::routing::NetCard* netcard =
 109     new simgrid::kernel::routing::NetCard(router->id, simgrid::kernel::routing::NetCard::Type::Router, current_routing);
 110   XBT_DEBUG("Router '%s' has the id %d", router->id, netcard->id());
 111
 112   if (router->coord && strcmp(router->coord, ""))
 113     new simgrid::kernel::routing::vivaldi::Coords(netcard, router->coord);
 114
 115   auto cluster = dynamic_cast<simgrid::kernel::routing::ClusterZone*>(current_routing);
 116   if(cluster != nullptr)
 117     cluster->router_ = simgrid::s4u::Engine::instance()->netcardByNameOrNull(router->id);
 118
 119   if (TRACE_is_enabled() && TRACE_needs_platform())
 120     sg_instr_new_router(router);
 121 }
 122
 123 void sg_platf_new_link(sg_platf_link_cbarg_t link){
 124   std::vector<char*> names;
 125
 126   if (link->policy == SURF_LINK_FULLDUPLEX) {
 127     names.push_back(bprintf("%s_UP", link->id));
 128     names.push_back(bprintf("%s_DOWN", link->id));
 129   } else {
 130     names.push_back(xbt_strdup(link->id));
 131   }
 132   for (auto link_name : names) {
 133     Link* l = surf_network_model->createLink(link_name, link->bandwidth, link->latency, link->policy);
 134
 135     if (link->properties) {
 136       xbt_dict_cursor_t cursor = nullptr;
 137       char *key, *data;
 138       xbt_dict_foreach (link->properties, cursor, key, data)
 139         l->setProperty(key, data);
 140       xbt_dict_free(&link->properties);
 141     }
 142
 143     if (link->latency_trace)
 144       l->setLatencyTrace(link->latency_trace);
 145     if (link->bandwidth_trace)
 146       l->setBandwidthTrace(link->bandwidth_trace);
 147     if (link->state_trace)
 148       l->setStateTrace(link->state_trace);
 149
 150     xbt_free(link_name);
 151   }
 152 }
 153
 154 void sg_platf_new_cluster(sg_platf_cluster_cbarg_t cluster)
 155 {
 156   using simgrid::kernel::routing::ClusterZone;
 157   using simgrid::kernel::routing::DragonflyZone;
 158   using simgrid::kernel::routing::FatTreeZone;
 159   using simgrid::kernel::routing::TorusZone;
 160
 161   int rankId=0;
 162
 163   s_sg_platf_link_cbarg_t link;
 164
 165   // What an inventive way of initializing the AS that I have as ancestor :-(
 166   s_sg_platf_AS_cbarg_t AS;
 167   AS.id = cluster->id;
 168   switch (cluster->topology) {
 169   case SURF_CLUSTER_TORUS:
 170     AS.routing = A_surfxml_AS_routing_ClusterTorus;
 171     break;
 172   case SURF_CLUSTER_DRAGONFLY:
 173     AS.routing = A_surfxml_AS_routing_ClusterDragonfly;
 174     break;
 175   case SURF_CLUSTER_FAT_TREE:
 176     AS.routing = A_surfxml_AS_routing_ClusterFatTree;
 177     break;
 178   default:
 179     AS.routing = A_surfxml_AS_routing_Cluster;
 180     break;
 181   }
 182   sg_platf_new_AS_begin(&AS);
 183   simgrid::kernel::routing::ClusterZone* current_as = static_cast<ClusterZone*>(routing_get_current());
 184   current_as->parse_specific_arguments(cluster);
 185
 186   if(cluster->loopback_bw!=0 || cluster->loopback_lat!=0){
 187     current_as->linkCountPerNode_++;
 188     current_as->hasLoopback_ = 1;
 189   }
 190
 191   if(cluster->limiter_link!=0){
 192     current_as->linkCountPerNode_++;
 193     current_as->hasLimiter_ = 1;
 194   }
 195
 196   for (int i : *cluster->radicals) {
 197     char * host_id = bprintf("%s%d%s", cluster->prefix, i, cluster->suffix);
 198     char * link_id = bprintf("%s_link_%d", cluster->id, i);
 199
 200     XBT_DEBUG("<host\tid=\"%s\"\tpower=\"%f\">", host_id, cluster->speed);
 201
 202     s_sg_platf_host_cbarg_t host;
 203     memset(&host, 0, sizeof(host));
 204     host.id = host_id;
 205     if ((cluster->properties != nullptr) && (!xbt_dict_is_empty(cluster->properties))) {
 206       xbt_dict_cursor_t cursor=nullptr;
 207       char *key,*data;
 208       host.properties = xbt_dict_new_homogeneous(free);
 209
 210       xbt_dict_foreach(cluster->properties,cursor,key,data) {
 211         xbt_dict_set(host.properties, key, xbt_strdup(data), nullptr);
 212       }
 213     }
 214
 215     host.speed_per_pstate.push_back(cluster->speed);
 216     host.pstate = 0;
 217     host.core_amount = cluster->core_amount;
 218     host.coord = "";
 219     sg_platf_new_host(&host);
 220     XBT_DEBUG("</host>");
 221
 222     XBT_DEBUG("<link\tid=\"%s\"\tbw=\"%f\"\tlat=\"%f\"/>", link_id, cluster->bw, cluster->lat);
 223
 224     // All links are saved in a matrix;
 225     // every row describes a single node; every node may have multiple links.
 226     // the first column may store a link from x to x if p_has_loopback is set
 227     // the second column may store a limiter link if p_has_limiter is set
 228     // other columns are to store one or more link for the node
 229
 230     //add a loopback link
 231     Link* linkUp   = nullptr;
 232     Link* linkDown = nullptr;
 233     if(cluster->loopback_bw!=0 || cluster->loopback_lat!=0){
 234       char *tmp_link = bprintf("%s_loopback", link_id);
 235       XBT_DEBUG("<loopback\tid=\"%s\"\tbw=\"%f\"/>", tmp_link, cluster->loopback_bw);
 236
 237       memset(&link, 0, sizeof(link));
 238       link.id        = tmp_link;
 239       link.bandwidth = cluster->loopback_bw;
 240       link.latency   = cluster->loopback_lat;
 241       link.policy    = SURF_LINK_FATPIPE;
 242       sg_platf_new_link(&link);
 243       linkUp   = Link::byName(tmp_link);
 244       linkDown = Link::byName(tmp_link);
 245       free(tmp_link);
 246
 247       auto as_cluster = static_cast<ClusterZone*>(current_as);
 248       as_cluster->privateLinks_.insert({rankId * as_cluster->linkCountPerNode_, {linkUp, linkDown}});
 249     }
 250
 251     //add a limiter link (shared link to account for maximal bandwidth of the node)
 252     linkUp   = nullptr;
 253     linkDown = nullptr;
 254     if(cluster->limiter_link!=0){
 255       char *tmp_link = bprintf("%s_limiter", link_id);
 256       XBT_DEBUG("<limiter\tid=\"%s\"\tbw=\"%f\"/>", tmp_link, cluster->limiter_link);
 257
 258       memset(&link, 0, sizeof(link));
 259       link.id = tmp_link;
 260       link.bandwidth = cluster->limiter_link;
 261       link.latency = 0;
 262       link.policy = SURF_LINK_SHARED;
 263       sg_platf_new_link(&link);
 264       linkUp = linkDown = Link::byName(tmp_link);
 265       free(tmp_link);
 266       current_as->privateLinks_.insert(
 267           {rankId * current_as->linkCountPerNode_ + current_as->hasLoopback_, {linkUp, linkDown}});
 268     }
 269
 270     //call the cluster function that adds the others links
 271     if (cluster->topology == SURF_CLUSTER_FAT_TREE) {
 272       static_cast<FatTreeZone*>(current_as)->addProcessingNode(i);
 273     }
 274     else {
 275       current_as->create_links_for_node(cluster, i, rankId,
 276           rankId*current_as->linkCountPerNode_ + current_as->hasLoopback_ + current_as->hasLimiter_ );
 277     }
 278     xbt_free(link_id);
 279     xbt_free(host_id);
 280     rankId++;
 281   }
 282
 283   // Add a router. It is magically used thanks to the way in which surf_routing_cluster is written,
 284   // and it's very useful to connect clusters together
 285   XBT_DEBUG(" ");
 286   XBT_DEBUG("<router id=\"%s\"/>", cluster->router_id);
 287   char *newid = nullptr;
 288   s_sg_platf_router_cbarg_t router;
 289   memset(&router, 0, sizeof(router));
 290   router.id = cluster->router_id;
 291   if (!router.id || !strcmp(router.id, ""))
 292     router.id = newid = bprintf("%s%s_router%s", cluster->prefix, cluster->id, cluster->suffix);
 293   sg_platf_new_router(&router);
 294   current_as->router_ = simgrid::s4u::Engine::instance()->netcardByNameOrNull(router.id);
 295   free(newid);
 296
 297   //Make the backbone
 298   if ((cluster->bb_bw != 0) || (cluster->bb_lat != 0)) {
 299
 300     memset(&link, 0, sizeof(link));
 301     link.id        = bprintf("%s_backbone", cluster->id);
 302     link.bandwidth = cluster->bb_bw;
 303     link.latency   = cluster->bb_lat;
 304     link.policy    = cluster->bb_sharing_policy;
 305
 306     XBT_DEBUG("<link\tid=\"%s\" bw=\"%f\" lat=\"%f\"/>", link.id, cluster->bb_bw, cluster->bb_lat);
 307     sg_platf_new_link(&link);
 308
 309     routing_cluster_add_backbone(Link::byName(link.id));
 310     free((char*)link.id);
 311   }
 312
 313   XBT_DEBUG("</AS>");
 314   sg_platf_new_AS_seal();
 315
 316   simgrid::surf::on_cluster(cluster);
 317   delete cluster->radicals;
 318 }
 319 void routing_cluster_add_backbone(simgrid::surf::Link* bb) {
 320   simgrid::kernel::routing::ClusterZone* cluster =
 321       dynamic_cast<simgrid::kernel::routing::ClusterZone*>(current_routing);
 322
 323   xbt_assert(cluster, "Only hosts from Cluster can get a backbone.");
 324   xbt_assert(nullptr == cluster->backbone_, "Cluster %s already has a backbone link!", cluster->name());
 325
 326   cluster->backbone_ = bb;
 327   XBT_DEBUG("Add a backbone to AS '%s'", current_routing->name());
 328 }
 329
 330 void sg_platf_new_cabinet(sg_platf_cabinet_cbarg_t cabinet)
 331 {
 332   for (int radical : *cabinet->radicals) {
 333     char *hostname = bprintf("%s%d%s", cabinet->prefix, radical, cabinet->suffix);
 334     s_sg_platf_host_cbarg_t host;
 335     memset(&host, 0, sizeof(host));
 336     host.pstate           = 0;
 337     host.core_amount      = 1;
 338     host.id               = hostname;
 339     host.speed_per_pstate.push_back(cabinet->speed);
 340     sg_platf_new_host(&host);
 341
 342     s_sg_platf_link_cbarg_t link;
 343     memset(&link, 0, sizeof(link));
 344     link.policy    = SURF_LINK_FULLDUPLEX;
 345     link.latency   = cabinet->lat;
 346     link.bandwidth = cabinet->bw;
 347     link.id        = bprintf("link_%s",hostname);
 348     sg_platf_new_link(&link);
 349     free((char*)link.id);
 350
 351     s_sg_platf_host_link_cbarg_t host_link;
 352     memset(&host_link, 0, sizeof(host_link));
 353     host_link.id        = hostname;
 354     host_link.link_up   = bprintf("link_%s_UP",hostname);
 355     host_link.link_down = bprintf("link_%s_DOWN",hostname);
 356     sg_platf_new_hostlink(&host_link);
 357     free((char*)host_link.link_up);
 358     free((char*)host_link.link_down);
 359
 360     free(hostname);
 361   }
 362   delete cabinet->radicals;
 363 }
 364
 365 void sg_platf_new_storage(sg_platf_storage_cbarg_t storage)
 366 {
 367   xbt_assert(!xbt_lib_get_or_null(storage_lib, storage->id,ROUTING_STORAGE_LEVEL),
 368                "Refusing to add a second storage named \"%s\"", storage->id);
 369
 370   void* stype = xbt_lib_get_or_null(storage_type_lib, storage->type_id,ROUTING_STORAGE_TYPE_LEVEL);
 371   xbt_assert(stype,"No storage type '%s'", storage->type_id);
 372
 373   XBT_DEBUG("ROUTING Create a storage name '%s' with type_id '%s' and content '%s'",
 374       storage->id,
 375       storage->type_id,
 376       storage->content);
 377
 378   xbt_lib_set(storage_lib, storage->id, ROUTING_STORAGE_LEVEL, (void *) xbt_strdup(storage->type_id));
 379
 380   // if storage content is not specified use the content of storage_type if any
 381   if(!strcmp(storage->content,"") && strcmp(((storage_type_t) stype)->content,"")){
 382     storage->content = ((storage_type_t) stype)->content;
 383     storage->content_type = ((storage_type_t) stype)->content_type;
 384     XBT_DEBUG("For disk '%s' content is empty, inherit the content (of type %s) from storage type '%s' ",
 385         storage->id,((storage_type_t) stype)->content_type,
 386         ((storage_type_t) stype)->type_id);
 387   }
 388
 389   XBT_DEBUG("SURF storage create resource\n\t\tid '%s'\n\t\ttype '%s' "
 390       "\n\t\tmodel '%s' \n\t\tcontent '%s'\n\t\tcontent_type '%s' "
 391       "\n\t\tproperties '%p''\n",
 392       storage->id,
 393       ((storage_type_t) stype)->model,
 394       ((storage_type_t) stype)->type_id,
 395       storage->content,
 396       storage->content_type,
 397     storage->properties);
 398
 399   auto s = surf_storage_model->createStorage(storage->id, ((storage_type_t)stype)->type_id, storage->content,
 400                                              storage->content_type, storage->attach);
 401
 402   if (storage->properties) {
 403     xbt_dict_cursor_t cursor = nullptr;
 404     char *key, *data;
 405     xbt_dict_foreach (storage->properties, cursor, key, data)
 406       s->setProperty(key, data);
 407     xbt_dict_free(&storage->properties);
 408   }
 409 }
 410 void sg_platf_new_storage_type(sg_platf_storage_type_cbarg_t storage_type){
 411
 412   xbt_assert(!xbt_lib_get_or_null(storage_type_lib, storage_type->id,ROUTING_STORAGE_TYPE_LEVEL),
 413                "Reading a storage type, processing unit \"%s\" already exists", storage_type->id);
 414
 415   storage_type_t stype = xbt_new0(s_storage_type_t, 1);
 416   stype->model = xbt_strdup(storage_type->model);
 417   stype->properties = storage_type->properties;
 418   stype->content = xbt_strdup(storage_type->content);
 419   stype->content_type = xbt_strdup(storage_type->content_type);
 420   stype->type_id = xbt_strdup(storage_type->id);
 421   stype->size = storage_type->size;
 422   stype->model_properties = storage_type->model_properties;
 423
 424   XBT_DEBUG("ROUTING Create a storage type id '%s' with model '%s', "
 425       "content '%s', and content_type '%s'",
 426       stype->type_id,
 427       stype->model,
 428       storage_type->content,
 429       storage_type->content_type);
 430
 431   xbt_lib_set(storage_type_lib,
 432       stype->type_id,
 433       ROUTING_STORAGE_TYPE_LEVEL,
 434       (void *) stype);
 435 }
 436
 437 static void mount_free(void *p)
 438 {
 439   mount_t mnt = (mount_t) p;
 440   xbt_free(mnt->name);
 441 }
 442
 443 void sg_platf_new_mount(sg_platf_mount_cbarg_t mount){
 444   xbt_assert(xbt_lib_get_or_null(storage_lib, mount->storageId, ROUTING_STORAGE_LEVEL),
 445       "Cannot mount non-existent disk \"%s\"", mount->storageId);
 446
 447   XBT_DEBUG("ROUTING Mount '%s' on '%s'",mount->storageId, mount->name);
 448
 449   s_mount_t mnt;
 450   mnt.storage = surf_storage_resource_priv(surf_storage_resource_by_name(mount->storageId));
 451   mnt.name = xbt_strdup(mount->name);
 452
 453   if(!mount_list){
 454     XBT_DEBUG("Create a Mount list for %s",A_surfxml_host_id);
 455     mount_list = xbt_dynar_new(sizeof(s_mount_t), mount_free);
 456   }
 457   xbt_dynar_push(mount_list, &mnt);
 458 }
 459
 460 void sg_platf_new_route(sg_platf_route_cbarg_t route)
 461 {
 462   routing_get_current()->addRoute(route);
 463 }
 464
 465 void sg_platf_new_bypassRoute(sg_platf_route_cbarg_t bypassRoute)
 466 {
 467   routing_get_current()->addBypassRoute(bypassRoute);
 468 }
 469
 470 void sg_platf_new_process(sg_platf_process_cbarg_t process)
 471 {
 472   sg_host_t host = sg_host_by_name(process->host);
 473   if (!host) {
 474     // The requested host does not exist. Do a nice message to the user
 475     char *tmp = bprintf("Cannot create process '%s': host '%s' does not exist\nExisting hosts: '",process->function, process->host);
 476     xbt_strbuff_t msg = xbt_strbuff_new_from(tmp);
 477     free(tmp);
 478     xbt_dynar_t all_hosts = xbt_dynar_sort_strings(sg_hosts_as_dynar());
 479     simgrid::s4u::Host* host;
 480     unsigned int cursor;
 481     xbt_dynar_foreach(all_hosts,cursor, host) {
 482       xbt_strbuff_append(msg, host->cname());
 483       xbt_strbuff_append(msg,"', '");
 484       if (msg->used > 1024) {
 485         msg->data[msg->used-3]='\0';
 486         msg->used -= 3;
 487
 488         xbt_strbuff_append(msg," ...(list truncated)......");// That will be shortened by 3 chars when existing the loop
 489         break;
 490       }
 491     }
 492     msg->data[msg->used-3]='\0';
 493     xbt_die("%s", msg->data);
 494   }
 495   simgrid::simix::ActorCodeFactory& factory = SIMIX_get_actor_code_factory(process->function);
 496   xbt_assert(factory, "Function '%s' unknown", process->function);
 497
 498   double start_time = process->start_time;
 499   double kill_time  = process->kill_time;
 500   int auto_restart = process->on_failure == SURF_PROCESS_ON_FAILURE_DIE ? 0 : 1;
 501
 502   std::vector<std::string> args(process->argv, process->argv + process->argc);
 503   std::function<void()> code = factory(std::move(args));
 504
 505   smx_process_arg_t arg = nullptr;
 506   smx_actor_t process_created = nullptr;
 507
 508   arg = new simgrid::simix::ProcessArg();
 509   arg->name = std::string(process->argv[0]);
 510   arg->code = code;
 511   arg->data = nullptr;
 512   arg->host = host;
 513   arg->kill_time = kill_time;
 514   arg->properties = current_property_set;
 515
 516   sg_host_simix(host)->boot_processes.push_back(arg);
 517
 518   if (start_time > SIMIX_get_clock()) {
 519
 520     arg = new simgrid::simix::ProcessArg();
 521     arg->name = std::string(process->argv[0]);
 522     arg->code = std::move(code);
 523     arg->data = nullptr;
 524     arg->host = host;
 525     arg->kill_time = kill_time;
 526     arg->properties = current_property_set;
 527
 528     XBT_DEBUG("Process %s@%s will be started at time %f", arg->name.c_str(), arg->host->cname(), start_time);
 529     SIMIX_timer_set(start_time, [=]() {
 530       simix_global->create_process_function(
 531                                             arg->name.c_str(),
 532                                             std::move(arg->code),
 533                                             arg->data,
 534                                             arg->host,
 535                                             arg->kill_time,
 536                                             arg->properties,
 537                                             arg->auto_restart,
 538                                             nullptr);
 539       delete arg;
 540     });
 541   } else {                      // start_time <= SIMIX_get_clock()
 542     XBT_DEBUG("Starting Process %s(%s) right now", arg->name.c_str(), host->cname());
 543
 544     process_created = simix_global->create_process_function(
 545         arg->name.c_str(), std::move(code), nullptr,
 546         host, kill_time,
 547         current_property_set, auto_restart, nullptr);
 548
 549     /* verify if process has been created (won't be the case if the host is currently dead, but that's fine) */
 550     if (!process_created) {
 551       return;
 552     }
 553   }
 554   current_property_set = nullptr;
 555 }
 556
 557 void sg_platf_new_peer(sg_platf_peer_cbarg_t peer)
 558 {
 559   simgrid::kernel::routing::VivaldiZone* as = dynamic_cast<simgrid::kernel::routing::VivaldiZone*>(current_routing);
 560   xbt_assert(as, "<peer> tag can only be used in Vivaldi ASes");
 561
 562   std::vector<double> speedPerPstate;
 563   speedPerPstate.push_back(peer->speed);
 564   simgrid::s4u::Host* host = as->createHost(peer->id, &speedPerPstate, 1);
 565
 566   as->setPeerLink(host->pimpl_netcard, peer->bw_in, peer->bw_out, peer->lat, peer->coord);
 567   simgrid::s4u::Host::onCreation(*host);
 568
 569   /* Change from the defaults */
 570   if (peer->state_trace)
 571     host->pimpl_cpu->setStateTrace(peer->state_trace);
 572   if (peer->speed_trace)
 573     host->pimpl_cpu->setSpeedTrace(peer->speed_trace);
 574 }
 575
 576 void sg_platf_begin() { /* Do nothing: just for symmetry of user code */ }
 577
 578 void sg_platf_end() {
 579   simgrid::surf::on_postparse();
 580 }
 581
 582 /* Pick the right models for CPU, net and host, and call their model_init_preparse */
 583 static void surf_config_models_setup()
 584 {
 585   const char* host_model_name    = xbt_cfg_get_string("host/model");
 586   const char* network_model_name = xbt_cfg_get_string("network/model");
 587   const char* cpu_model_name     = xbt_cfg_get_string("cpu/model");
 588   const char* storage_model_name = xbt_cfg_get_string("storage/model");
 589
 590   /* The compound host model is needed when using non-default net/cpu models */
 591   if ((!xbt_cfg_is_default_value("network/model") || !xbt_cfg_is_default_value("cpu/model")) &&
 592       xbt_cfg_is_default_value("host/model")) {
 593     host_model_name = "compound";
 594     xbt_cfg_set_string("host/model", host_model_name);
 595   }
 596
 597   XBT_DEBUG("host model: %s", host_model_name);
 598   if (!strcmp(host_model_name, "compound")) {
 599     xbt_assert(cpu_model_name, "Set a cpu model to use with the 'compound' host model");
 600     xbt_assert(network_model_name, "Set a network model to use with the 'compound' host model");
 601
 602     int cpu_id = find_model_description(surf_cpu_model_description, cpu_model_name);
 603     surf_cpu_model_description[cpu_id].model_init_preparse();
 604
 605     int network_id = find_model_description(surf_network_model_description, network_model_name);
 606     surf_network_model_description[network_id].model_init_preparse();
 607   }
 608
 609   XBT_DEBUG("Call host_model_init");
 610   int host_id = find_model_description(surf_host_model_description, host_model_name);
 611   surf_host_model_description[host_id].model_init_preparse();
 612
 613   XBT_DEBUG("Call vm_model_init");
 614   surf_vm_model_init_HL13();
 615
 616   XBT_DEBUG("Call storage_model_init");
 617   int storage_id = find_model_description(surf_storage_model_description, storage_model_name);
 618   surf_storage_model_description[storage_id].model_init_preparse();
 619 }
 620
 621 /**
 622  * \brief Add an AS to the platform
 623  *
 624  * Add a new autonomous system to the platform. Any elements (such as host,
 625  * router or sub-AS) added after this call and before the corresponding call
 626  * to sg_platf_new_AS_seal() will be added to this AS.
 627  *
 628  * Once this function was called, the configuration concerning the used
 629  * models cannot be changed anymore.
 630  *
 631  * @param AS the parameters defining the AS to build.
 632  */
 633 simgrid::s4u::NetZone* sg_platf_new_AS_begin(sg_platf_AS_cbarg_t AS)
 634 {
 635   if (!surf_parse_models_setup_already_called) {
 636     /* Initialize the surf models. That must be done after we got all config, and before we need the models.
 637      * That is, after the last <config> tag, if any, and before the first of cluster|peer|AS|trace|trace_connect
 638      *
 639      * I'm not sure for <trace> and <trace_connect>, there may be a bug here
 640      * (FIXME: check it out by creating a file beginning with one of these tags)
 641      * but cluster and peer create ASes internally, so putting the code in there is ok.
 642      */
 643     surf_parse_models_setup_already_called = 1;
 644     surf_config_models_setup();
 645   }
 646
 647   _sg_cfg_init_status = 2; /* HACK: direct access to the global controlling the level of configuration to prevent
 648                             * any further config now that we created some real content */
 649
 650
 651   /* search the routing model */
 652   simgrid::kernel::routing::NetZoneImpl* new_as = nullptr;
 653   switch(AS->routing){
 654     case A_surfxml_AS_routing_Cluster:
 655       new_as = new simgrid::kernel::routing::ClusterZone(current_routing, AS->id);
 656       break;
 657     case A_surfxml_AS_routing_ClusterDragonfly:
 658       new_as = new simgrid::kernel::routing::DragonflyZone(current_routing, AS->id);
 659       break;
 660     case A_surfxml_AS_routing_ClusterTorus:
 661       new_as = new simgrid::kernel::routing::TorusZone(current_routing, AS->id);
 662       break;
 663     case A_surfxml_AS_routing_ClusterFatTree:
 664       new_as = new simgrid::kernel::routing::FatTreeZone(current_routing, AS->id);
 665       break;
 666     case A_surfxml_AS_routing_Dijkstra:
 667       new_as = new simgrid::kernel::routing::DijkstraZone(current_routing, AS->id, 0);
 668       break;
 669     case A_surfxml_AS_routing_DijkstraCache:
 670       new_as = new simgrid::kernel::routing::DijkstraZone(current_routing, AS->id, 1);
 671       break;
 672     case A_surfxml_AS_routing_Floyd:
 673       new_as = new simgrid::kernel::routing::FloydZone(current_routing, AS->id);
 674       break;
 675     case A_surfxml_AS_routing_Full:
 676       new_as = new simgrid::kernel::routing::FullZone(current_routing, AS->id);
 677       break;
 678     case A_surfxml_AS_routing_None:
 679       new_as = new simgrid::kernel::routing::EmptyZone(current_routing, AS->id);
 680       break;
 681     case A_surfxml_AS_routing_Vivaldi:
 682       new_as = new simgrid::kernel::routing::VivaldiZone(current_routing, AS->id);
 683       break;
 684     default:
 685       xbt_die("Not a valid model!");
 686       break;
 687   }
 688
 689   if (current_routing == nullptr) { /* it is the first one */
 690     xbt_assert(simgrid::s4u::Engine::instance()->pimpl->netRoot_ == nullptr,
 691                "All defined components must belong to a AS");
 692     simgrid::s4u::Engine::instance()->pimpl->netRoot_ = new_as;
 693
 694   } else {
 695     /* set the father behavior */
 696     if (current_routing->hierarchy_ == simgrid::kernel::routing::NetZoneImpl::RoutingMode::unset)
 697       current_routing->hierarchy_ = simgrid::kernel::routing::NetZoneImpl::RoutingMode::recursive;
 698     /* add to the sons dictionary */
 699     xbt_dict_set(current_routing->children(), AS->id, (void *) new_as, nullptr);
 700   }
 701
 702   /* set the new current component of the tree */
 703   current_routing = new_as;
 704
 705   if (TRACE_is_enabled())
 706     sg_instr_AS_begin(AS);
 707
 708   return new_as;
 709 }
 710
 711 /**
 712  * \brief Specify that the description of the current AS is finished
 713  *
 714  * Once you've declared all the content of your AS, you have to seal
 715  * it with this call. Your AS is not usable until you call this function.
 716  */
 717 void sg_platf_new_AS_seal()
 718 {
 719   xbt_assert(current_routing, "Cannot seal the current AS: none under construction");
 720   current_routing->seal();
 721   current_routing = static_cast<simgrid::kernel::routing::NetZoneImpl*>(current_routing->father());
 722
 723   if (TRACE_is_enabled())
 724     sg_instr_AS_end();
 725 }
 726
 727 /** @brief Add a link connecting an host to the rest of its AS (which must be cluster or vivaldi) */
 728 void sg_platf_new_hostlink(sg_platf_host_link_cbarg_t hostlink)
 729 {
 730   simgrid::kernel::routing::NetCard *netcard = sg_host_by_name(hostlink->id)->pimpl_netcard;
 731   xbt_assert(netcard, "Host '%s' not found!", hostlink->id);
 732   xbt_assert(dynamic_cast<simgrid::kernel::routing::ClusterZone*>(current_routing),
 733              "Only hosts from Cluster and Vivaldi ASes can get an host_link.");
 734
 735   simgrid::surf::Link* linkUp   = Link::byName(hostlink->link_up);
 736   simgrid::surf::Link* linkDown = Link::byName(hostlink->link_down);
 737
 738   xbt_assert(linkUp, "Link '%s' not found!", hostlink->link_up);
 739   xbt_assert(linkDown, "Link '%s' not found!", hostlink->link_down);
 740
 741   auto as_cluster = static_cast<simgrid::kernel::routing::ClusterZone*>(current_routing);
 742
 743   if (as_cluster->privateLinks_.find(netcard->id()) != as_cluster->privateLinks_.end())
 744     surf_parse_error("Host_link for '%s' is already defined!",hostlink->id);
 745
 746   XBT_DEBUG("Push Host_link for host '%s' to position %d", netcard->cname(), netcard->id());
 747   as_cluster->privateLinks_.insert({netcard->id(), {linkUp, linkDown}});
 748 }
 749
 750 void sg_platf_new_trace(sg_platf_trace_cbarg_t trace)
 751 {
 752   tmgr_trace_t tmgr_trace;
 753   if (trace->file && strcmp(trace->file, "") != 0) {
 754     tmgr_trace = tmgr_trace_new_from_file(trace->file);
 755   } else {
 756     xbt_assert(strcmp(trace->pc_data, ""),
 757         "Trace '%s' must have either a content, or point to a file on disk.",trace->id);
 758     tmgr_trace = tmgr_trace_new_from_string(trace->id, trace->pc_data, trace->periodicity);
 759   }
 760   xbt_dict_set(traces_set_list, trace->id, static_cast<void*>(tmgr_trace), nullptr);
 761 }