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_link_cbarg_t)> on_link;
  37 simgrid::xbt::signal<void(sg_platf_cluster_cbarg_t)> on_cluster;
  38 simgrid::xbt::signal<void(void)> on_postparse;
  39
  40 }
  41 }
  42
  43 static int surf_parse_models_setup_already_called = 0;
  44
  45 /** The current AS in the parsing */
  46 static simgrid::kernel::routing::NetZoneImpl* current_routing = nullptr;
  47 static simgrid::kernel::routing::NetZoneImpl* routing_get_current()
  48 {
  49   return current_routing;
  50 }
  51
  52 /** Module management function: creates all internal data structures */
  53 void sg_platf_init() {
  54 }
  55
  56 /** Module management function: frees all internal data structures */
  57 void sg_platf_exit() {
  58   simgrid::surf::on_link.disconnect_all_slots();
  59   simgrid::surf::on_cluster.disconnect_all_slots();
  60   simgrid::surf::on_postparse.disconnect_all_slots();
  61
  62   /* make sure that we will reinit the models while loading the platf once reinited */
  63   surf_parse_models_setup_already_called = 0;
  64   surf_parse_lex_destroy();
  65 }
  66
  67 /** @brief Add an host to the current AS */
  68 void sg_platf_new_host(sg_platf_host_cbarg_t args)
  69 {
  70   simgrid::s4u::Host* host = routing_get_current()->createHost(args->id, &args->speed_per_pstate, args->core_amount);
  71
  72   new simgrid::surf::HostImpl(host, mount_list);
  73   xbt_lib_set(storage_lib, args->id, ROUTING_STORAGE_HOST_LEVEL, static_cast<void*>(mount_list));
  74   mount_list = nullptr;
  75
  76   if (args->properties) {
  77     xbt_dict_cursor_t cursor=nullptr;
  78     char *key,*data;
  79     xbt_dict_foreach (args->properties, cursor, key, data)
  80       host->setProperty(key, data);
  81     xbt_dict_free(&args->properties);
  82   }
  83
  84   /* Change from the defaults */
  85   if (args->state_trace)
  86     host->pimpl_cpu->setStateTrace(args->state_trace);
  87   if (args->speed_trace)
  88     host->pimpl_cpu->setSpeedTrace(args->speed_trace);
  89   if (args->pstate != 0)
  90     host->pimpl_cpu->setPState(args->pstate);
  91   if (args->coord && strcmp(args->coord, ""))
  92     new simgrid::kernel::routing::vivaldi::Coords(host->pimpl_netcard, args->coord);
  93
  94   simgrid::s4u::Host::onCreation(*host);
  95
  96   if (TRACE_is_enabled() && TRACE_needs_platform())
  97     sg_instr_new_host(*host);
  98 }
  99
 100 /** @brief Add a "router" to the network element list */
 101 void sg_platf_new_router(sg_platf_router_cbarg_t router)
 102 {
 103   simgrid::kernel::routing::NetZoneImpl* current_routing = routing_get_current();
 104
 105   if (current_routing->hierarchy_ == simgrid::kernel::routing::NetZoneImpl::RoutingMode::unset)
 106     current_routing->hierarchy_ = simgrid::kernel::routing::NetZoneImpl::RoutingMode::base;
 107   xbt_assert(nullptr == simgrid::s4u::Engine::instance()->netcardByNameOrNull(router->id),
 108              "Refusing to create a router named '%s': this name already describes a node.", router->id);
 109
 110   simgrid::kernel::routing::NetCard* netcard =
 111     new simgrid::kernel::routing::NetCard(router->id, simgrid::kernel::routing::NetCard::Type::Router, current_routing);
 112   XBT_DEBUG("Router '%s' has the id %d", router->id, netcard->id());
 113
 114   if (router->coord && strcmp(router->coord, ""))
 115     new simgrid::kernel::routing::vivaldi::Coords(netcard, router->coord);
 116
 117   auto cluster = dynamic_cast<simgrid::kernel::routing::ClusterZone*>(current_routing);
 118   if(cluster != nullptr)
 119     cluster->router_ = simgrid::s4u::Engine::instance()->netcardByNameOrNull(router->id);
 120
 121   if (TRACE_is_enabled() && TRACE_needs_platform())
 122     sg_instr_new_router(router);
 123 }
 124
 125 void sg_platf_new_link(sg_platf_link_cbarg_t link){
 126   std::vector<char*> names;
 127
 128   if (link->policy == SURF_LINK_FULLDUPLEX) {
 129     names.push_back(bprintf("%s_UP", link->id));
 130     names.push_back(bprintf("%s_DOWN", link->id));
 131   } else {
 132     names.push_back(xbt_strdup(link->id));
 133   }
 134   for (auto link_name : names) {
 135     Link* l = surf_network_model->createLink(link_name, link->bandwidth, link->latency, link->policy);
 136
 137     if (link->properties) {
 138       xbt_dict_cursor_t cursor = nullptr;
 139       char *key, *data;
 140       xbt_dict_foreach (link->properties, cursor, key, data)
 141         l->setProperty(key, data);
 142       xbt_dict_free(&link->properties);
 143     }
 144
 145     if (link->latency_trace)
 146       l->setLatencyTrace(link->latency_trace);
 147     if (link->bandwidth_trace)
 148       l->setBandwidthTrace(link->bandwidth_trace);
 149     if (link->state_trace)
 150       l->setStateTrace(link->state_trace);
 151
 152     xbt_free(link_name);
 153   }
 154
 155   simgrid::surf::on_link(link);
 156 }
 157
 158 void sg_platf_new_cluster(sg_platf_cluster_cbarg_t cluster)
 159 {
 160   using simgrid::kernel::routing::ClusterZone;
 161   using simgrid::kernel::routing::DragonflyZone;
 162   using simgrid::kernel::routing::FatTreeZone;
 163   using simgrid::kernel::routing::TorusZone;
 164
 165   int rankId=0;
 166
 167   s_sg_platf_link_cbarg_t link;
 168
 169   // What an inventive way of initializing the AS that I have as ancestor :-(
 170   s_sg_platf_AS_cbarg_t AS;
 171   AS.id = cluster->id;
 172   switch (cluster->topology) {
 173   case SURF_CLUSTER_TORUS:
 174     AS.routing = A_surfxml_AS_routing_ClusterTorus;
 175     break;
 176   case SURF_CLUSTER_DRAGONFLY:
 177     AS.routing = A_surfxml_AS_routing_ClusterDragonfly;
 178     break;
 179   case SURF_CLUSTER_FAT_TREE:
 180     AS.routing = A_surfxml_AS_routing_ClusterFatTree;
 181     break;
 182   default:
 183     AS.routing = A_surfxml_AS_routing_Cluster;
 184     break;
 185   }
 186   sg_platf_new_AS_begin(&AS);
 187   simgrid::kernel::routing::ClusterZone* current_as = static_cast<ClusterZone*>(routing_get_current());
 188   current_as->parse_specific_arguments(cluster);
 189
 190   if(cluster->loopback_bw!=0 || cluster->loopback_lat!=0){
 191     current_as->linkCountPerNode_++;
 192     current_as->hasLoopback_ = 1;
 193   }
 194
 195   if(cluster->limiter_link!=0){
 196     current_as->linkCountPerNode_++;
 197     current_as->hasLimiter_ = 1;
 198   }
 199
 200   for (int i : *cluster->radicals) {
 201     char * host_id = bprintf("%s%d%s", cluster->prefix, i, cluster->suffix);
 202     char * link_id = bprintf("%s_link_%d", cluster->id, i);
 203
 204     XBT_DEBUG("<host\tid=\"%s\"\tpower=\"%f\">", host_id, cluster->speed);
 205
 206     s_sg_platf_host_cbarg_t host;
 207     memset(&host, 0, sizeof(host));
 208     host.id = host_id;
 209     if ((cluster->properties != nullptr) && (!xbt_dict_is_empty(cluster->properties))) {
 210       xbt_dict_cursor_t cursor=nullptr;
 211       char *key,*data;
 212       host.properties = xbt_dict_new_homogeneous(free);
 213
 214       xbt_dict_foreach(cluster->properties,cursor,key,data) {
 215         xbt_dict_set(host.properties, key, xbt_strdup(data), nullptr);
 216       }
 217     }
 218
 219     host.speed_per_pstate.push_back(cluster->speed);
 220     host.pstate = 0;
 221     host.core_amount = cluster->core_amount;
 222     host.coord = "";
 223     sg_platf_new_host(&host);
 224     XBT_DEBUG("</host>");
 225
 226     XBT_DEBUG("<link\tid=\"%s\"\tbw=\"%f\"\tlat=\"%f\"/>", link_id, cluster->bw, cluster->lat);
 227
 228     // All links are saved in a matrix;
 229     // every row describes a single node; every node may have multiple links.
 230     // the first column may store a link from x to x if p_has_loopback is set
 231     // the second column may store a limiter link if p_has_limiter is set
 232     // other columns are to store one or more link for the node
 233
 234     //add a loopback link
 235     Link* linkUp   = nullptr;
 236     Link* linkDown = nullptr;
 237     if(cluster->loopback_bw!=0 || cluster->loopback_lat!=0){
 238       char *tmp_link = bprintf("%s_loopback", link_id);
 239       XBT_DEBUG("<loopback\tid=\"%s\"\tbw=\"%f\"/>", tmp_link, cluster->loopback_bw);
 240
 241       memset(&link, 0, sizeof(link));
 242       link.id        = tmp_link;
 243       link.bandwidth = cluster->loopback_bw;
 244       link.latency   = cluster->loopback_lat;
 245       link.policy    = SURF_LINK_FATPIPE;
 246       sg_platf_new_link(&link);
 247       linkUp   = Link::byName(tmp_link);
 248       linkDown = Link::byName(tmp_link);
 249       free(tmp_link);
 250
 251       auto as_cluster = static_cast<ClusterZone*>(current_as);
 252       as_cluster->privateLinks_.insert({rankId * as_cluster->linkCountPerNode_, {linkUp, linkDown}});
 253     }
 254
 255     //add a limiter link (shared link to account for maximal bandwidth of the node)
 256     linkUp   = nullptr;
 257     linkDown = nullptr;
 258     if(cluster->limiter_link!=0){
 259       char *tmp_link = bprintf("%s_limiter", link_id);
 260       XBT_DEBUG("<limiter\tid=\"%s\"\tbw=\"%f\"/>", tmp_link, cluster->limiter_link);
 261
 262       memset(&link, 0, sizeof(link));
 263       link.id = tmp_link;
 264       link.bandwidth = cluster->limiter_link;
 265       link.latency = 0;
 266       link.policy = SURF_LINK_SHARED;
 267       sg_platf_new_link(&link);
 268       linkUp = linkDown = Link::byName(tmp_link);
 269       free(tmp_link);
 270       current_as->privateLinks_.insert(
 271           {rankId * current_as->linkCountPerNode_ + current_as->hasLoopback_, {linkUp, linkDown}});
 272     }
 273
 274     //call the cluster function that adds the others links
 275     if (cluster->topology == SURF_CLUSTER_FAT_TREE) {
 276       static_cast<FatTreeZone*>(current_as)->addProcessingNode(i);
 277     }
 278     else {
 279       current_as->create_links_for_node(cluster, i, rankId,
 280           rankId*current_as->linkCountPerNode_ + current_as->hasLoopback_ + current_as->hasLimiter_ );
 281     }
 282     xbt_free(link_id);
 283     xbt_free(host_id);
 284     rankId++;
 285   }
 286
 287   // Add a router. It is magically used thanks to the way in which surf_routing_cluster is written,
 288   // and it's very useful to connect clusters together
 289   XBT_DEBUG(" ");
 290   XBT_DEBUG("<router id=\"%s\"/>", cluster->router_id);
 291   char *newid = nullptr;
 292   s_sg_platf_router_cbarg_t router;
 293   memset(&router, 0, sizeof(router));
 294   router.id = cluster->router_id;
 295   if (!router.id || !strcmp(router.id, ""))
 296     router.id = newid = bprintf("%s%s_router%s", cluster->prefix, cluster->id, cluster->suffix);
 297   sg_platf_new_router(&router);
 298   current_as->router_ = simgrid::s4u::Engine::instance()->netcardByNameOrNull(router.id);
 299   free(newid);
 300
 301   //Make the backbone
 302   if ((cluster->bb_bw != 0) || (cluster->bb_lat != 0)) {
 303
 304     memset(&link, 0, sizeof(link));
 305     link.id        = bprintf("%s_backbone", cluster->id);
 306     link.bandwidth = cluster->bb_bw;
 307     link.latency   = cluster->bb_lat;
 308     link.policy    = cluster->bb_sharing_policy;
 309
 310     XBT_DEBUG("<link\tid=\"%s\" bw=\"%f\" lat=\"%f\"/>", link.id, cluster->bb_bw, cluster->bb_lat);
 311     sg_platf_new_link(&link);
 312
 313     routing_cluster_add_backbone(Link::byName(link.id));
 314     free((char*)link.id);
 315   }
 316
 317   XBT_DEBUG("</AS>");
 318   sg_platf_new_AS_seal();
 319
 320   simgrid::surf::on_cluster(cluster);
 321   delete cluster->radicals;
 322 }
 323 void routing_cluster_add_backbone(simgrid::surf::Link* bb) {
 324   simgrid::kernel::routing::ClusterZone* cluster =
 325       dynamic_cast<simgrid::kernel::routing::ClusterZone*>(current_routing);
 326
 327   xbt_assert(cluster, "Only hosts from Cluster can get a backbone.");
 328   xbt_assert(nullptr == cluster->backbone_, "Cluster %s already has a backbone link!", cluster->name());
 329
 330   cluster->backbone_ = bb;
 331   XBT_DEBUG("Add a backbone to AS '%s'", current_routing->name());
 332 }
 333
 334 void sg_platf_new_cabinet(sg_platf_cabinet_cbarg_t cabinet)
 335 {
 336   for (int radical : *cabinet->radicals) {
 337     char *hostname = bprintf("%s%d%s", cabinet->prefix, radical, cabinet->suffix);
 338     s_sg_platf_host_cbarg_t host;
 339     memset(&host, 0, sizeof(host));
 340     host.pstate           = 0;
 341     host.core_amount      = 1;
 342     host.id               = hostname;
 343     host.speed_per_pstate.push_back(cabinet->speed);
 344     sg_platf_new_host(&host);
 345
 346     s_sg_platf_link_cbarg_t link;
 347     memset(&link, 0, sizeof(link));
 348     link.policy    = SURF_LINK_FULLDUPLEX;
 349     link.latency   = cabinet->lat;
 350     link.bandwidth = cabinet->bw;
 351     link.id        = bprintf("link_%s",hostname);
 352     sg_platf_new_link(&link);
 353     free((char*)link.id);
 354
 355     s_sg_platf_host_link_cbarg_t host_link;
 356     memset(&host_link, 0, sizeof(host_link));
 357     host_link.id        = hostname;
 358     host_link.link_up   = bprintf("link_%s_UP",hostname);
 359     host_link.link_down = bprintf("link_%s_DOWN",hostname);
 360     sg_platf_new_hostlink(&host_link);
 361     free((char*)host_link.link_up);
 362     free((char*)host_link.link_down);
 363
 364     free(hostname);
 365   }
 366   delete cabinet->radicals;
 367 }
 368
 369 void sg_platf_new_storage(sg_platf_storage_cbarg_t storage)
 370 {
 371   xbt_assert(!xbt_lib_get_or_null(storage_lib, storage->id,ROUTING_STORAGE_LEVEL),
 372                "Refusing to add a second storage named \"%s\"", storage->id);
 373
 374   void* stype = xbt_lib_get_or_null(storage_type_lib, storage->type_id,ROUTING_STORAGE_TYPE_LEVEL);
 375   xbt_assert(stype,"No storage type '%s'", storage->type_id);
 376
 377   XBT_DEBUG("ROUTING Create a storage name '%s' with type_id '%s' and content '%s'",
 378       storage->id,
 379       storage->type_id,
 380       storage->content);
 381
 382   xbt_lib_set(storage_lib, storage->id, ROUTING_STORAGE_LEVEL, (void *) xbt_strdup(storage->type_id));
 383
 384   // if storage content is not specified use the content of storage_type if any
 385   if(!strcmp(storage->content,"") && strcmp(((storage_type_t) stype)->content,"")){
 386     storage->content = ((storage_type_t) stype)->content;
 387     storage->content_type = ((storage_type_t) stype)->content_type;
 388     XBT_DEBUG("For disk '%s' content is empty, inherit the content (of type %s) from storage type '%s' ",
 389         storage->id,((storage_type_t) stype)->content_type,
 390         ((storage_type_t) stype)->type_id);
 391   }
 392
 393   XBT_DEBUG("SURF storage create resource\n\t\tid '%s'\n\t\ttype '%s' "
 394       "\n\t\tmodel '%s' \n\t\tcontent '%s'\n\t\tcontent_type '%s' "
 395       "\n\t\tproperties '%p''\n",
 396       storage->id,
 397       ((storage_type_t) stype)->model,
 398       ((storage_type_t) stype)->type_id,
 399       storage->content,
 400       storage->content_type,
 401     storage->properties);
 402
 403   auto s = surf_storage_model->createStorage(storage->id, ((storage_type_t)stype)->type_id, storage->content,
 404                                              storage->content_type, storage->attach);
 405
 406   if (storage->properties) {
 407     xbt_dict_cursor_t cursor = nullptr;
 408     char *key, *data;
 409     xbt_dict_foreach (storage->properties, cursor, key, data)
 410       s->setProperty(key, data);
 411     xbt_dict_free(&storage->properties);
 412   }
 413 }
 414 void sg_platf_new_storage_type(sg_platf_storage_type_cbarg_t storage_type){
 415
 416   xbt_assert(!xbt_lib_get_or_null(storage_type_lib, storage_type->id,ROUTING_STORAGE_TYPE_LEVEL),
 417                "Reading a storage type, processing unit \"%s\" already exists", storage_type->id);
 418
 419   storage_type_t stype = xbt_new0(s_storage_type_t, 1);
 420   stype->model = xbt_strdup(storage_type->model);
 421   stype->properties = storage_type->properties;
 422   stype->content = xbt_strdup(storage_type->content);
 423   stype->content_type = xbt_strdup(storage_type->content_type);
 424   stype->type_id = xbt_strdup(storage_type->id);
 425   stype->size = storage_type->size;
 426   stype->model_properties = storage_type->model_properties;
 427
 428   XBT_DEBUG("ROUTING Create a storage type id '%s' with model '%s', "
 429       "content '%s', and content_type '%s'",
 430       stype->type_id,
 431       stype->model,
 432       storage_type->content,
 433       storage_type->content_type);
 434
 435   xbt_lib_set(storage_type_lib,
 436       stype->type_id,
 437       ROUTING_STORAGE_TYPE_LEVEL,
 438       (void *) stype);
 439 }
 440
 441 static void mount_free(void *p)
 442 {
 443   mount_t mnt = (mount_t) p;
 444   xbt_free(mnt->name);
 445 }
 446
 447 void sg_platf_new_mount(sg_platf_mount_cbarg_t mount){
 448   xbt_assert(xbt_lib_get_or_null(storage_lib, mount->storageId, ROUTING_STORAGE_LEVEL),
 449       "Cannot mount non-existent disk \"%s\"", mount->storageId);
 450
 451   XBT_DEBUG("ROUTING Mount '%s' on '%s'",mount->storageId, mount->name);
 452
 453   s_mount_t mnt;
 454   mnt.storage = surf_storage_resource_priv(surf_storage_resource_by_name(mount->storageId));
 455   mnt.name = xbt_strdup(mount->name);
 456
 457   if(!mount_list){
 458     XBT_DEBUG("Create a Mount list for %s",A_surfxml_host_id);
 459     mount_list = xbt_dynar_new(sizeof(s_mount_t), mount_free);
 460   }
 461   xbt_dynar_push(mount_list, &mnt);
 462 }
 463
 464 void sg_platf_new_route(sg_platf_route_cbarg_t route)
 465 {
 466   routing_get_current()->addRoute(route);
 467 }
 468
 469 void sg_platf_new_bypassRoute(sg_platf_route_cbarg_t bypassRoute)
 470 {
 471   routing_get_current()->addBypassRoute(bypassRoute);
 472 }
 473
 474 void sg_platf_new_process(sg_platf_process_cbarg_t process)
 475 {
 476   sg_host_t host = sg_host_by_name(process->host);
 477   if (!host) {
 478     // The requested host does not exist. Do a nice message to the user
 479     char *tmp = bprintf("Cannot create process '%s': host '%s' does not exist\nExisting hosts: '",process->function, process->host);
 480     xbt_strbuff_t msg = xbt_strbuff_new_from(tmp);
 481     free(tmp);
 482     xbt_dynar_t all_hosts = xbt_dynar_sort_strings(sg_hosts_as_dynar());
 483     simgrid::s4u::Host* host;
 484     unsigned int cursor;
 485     xbt_dynar_foreach(all_hosts,cursor, host) {
 486       xbt_strbuff_append(msg, host->cname());
 487       xbt_strbuff_append(msg,"', '");
 488       if (msg->used > 1024) {
 489         msg->data[msg->used-3]='\0';
 490         msg->used -= 3;
 491
 492         xbt_strbuff_append(msg," ...(list truncated)......");// That will be shortened by 3 chars when existing the loop
 493         break;
 494       }
 495     }
 496     msg->data[msg->used-3]='\0';
 497     xbt_die("%s", msg->data);
 498   }
 499   simgrid::simix::ActorCodeFactory& factory = SIMIX_get_actor_code_factory(process->function);
 500   xbt_assert(factory, "Function '%s' unknown", process->function);
 501
 502   double start_time = process->start_time;
 503   double kill_time  = process->kill_time;
 504   int auto_restart = process->on_failure == SURF_PROCESS_ON_FAILURE_DIE ? 0 : 1;
 505
 506   std::vector<std::string> args(process->argv, process->argv + process->argc);
 507   std::function<void()> code = factory(std::move(args));
 508
 509   smx_process_arg_t arg = nullptr;
 510   smx_actor_t process_created = nullptr;
 511
 512   arg = new simgrid::simix::ProcessArg();
 513   arg->name = std::string(process->argv[0]);
 514   arg->code = code;
 515   arg->data = nullptr;
 516   arg->host = host;
 517   arg->kill_time = kill_time;
 518   arg->properties = current_property_set;
 519
 520   sg_host_simix(host)->boot_processes.push_back(arg);
 521
 522   if (start_time > SIMIX_get_clock()) {
 523
 524     arg = new simgrid::simix::ProcessArg();
 525     arg->name = std::string(process->argv[0]);
 526     arg->code = std::move(code);
 527     arg->data = nullptr;
 528     arg->host = host;
 529     arg->kill_time = kill_time;
 530     arg->properties = current_property_set;
 531
 532     XBT_DEBUG("Process %s@%s will be started at time %f", arg->name.c_str(), arg->host->cname(), start_time);
 533     SIMIX_timer_set(start_time, [=]() {
 534       simix_global->create_process_function(
 535                                             arg->name.c_str(),
 536                                             std::move(arg->code),
 537                                             arg->data,
 538                                             arg->host,
 539                                             arg->kill_time,
 540                                             arg->properties,
 541                                             arg->auto_restart,
 542                                             nullptr);
 543       delete arg;
 544     });
 545   } else {                      // start_time <= SIMIX_get_clock()
 546     XBT_DEBUG("Starting Process %s(%s) right now", arg->name.c_str(), host->cname());
 547
 548     process_created = simix_global->create_process_function(
 549         arg->name.c_str(), std::move(code), nullptr,
 550         host, kill_time,
 551         current_property_set, auto_restart, nullptr);
 552
 553     /* verify if process has been created (won't be the case if the host is currently dead, but that's fine) */
 554     if (!process_created) {
 555       return;
 556     }
 557   }
 558   current_property_set = nullptr;
 559 }
 560
 561 void sg_platf_new_peer(sg_platf_peer_cbarg_t peer)
 562 {
 563   simgrid::kernel::routing::VivaldiZone* as = dynamic_cast<simgrid::kernel::routing::VivaldiZone*>(current_routing);
 564   xbt_assert(as, "<peer> tag can only be used in Vivaldi ASes");
 565
 566   std::vector<double> speedPerPstate;
 567   speedPerPstate.push_back(peer->speed);
 568   simgrid::s4u::Host* host = as->createHost(peer->id, &speedPerPstate, 1);
 569
 570   as->setPeerLink(host->pimpl_netcard, peer->bw_in, peer->bw_out, peer->lat, peer->coord);
 571   simgrid::s4u::Host::onCreation(*host);
 572
 573   /* Change from the defaults */
 574   if (peer->state_trace)
 575     host->pimpl_cpu->setStateTrace(peer->state_trace);
 576   if (peer->speed_trace)
 577     host->pimpl_cpu->setSpeedTrace(peer->speed_trace);
 578 }
 579
 580 void sg_platf_begin() { /* Do nothing: just for symmetry of user code */ }
 581
 582 void sg_platf_end() {
 583   simgrid::surf::on_postparse();
 584 }
 585
 586 /* Pick the right models for CPU, net and host, and call their model_init_preparse */
 587 static void surf_config_models_setup()
 588 {
 589   const char* host_model_name    = xbt_cfg_get_string("host/model");
 590   const char* network_model_name = xbt_cfg_get_string("network/model");
 591   const char* cpu_model_name     = xbt_cfg_get_string("cpu/model");
 592   const char* storage_model_name = xbt_cfg_get_string("storage/model");
 593
 594   /* The compound host model is needed when using non-default net/cpu models */
 595   if ((!xbt_cfg_is_default_value("network/model") || !xbt_cfg_is_default_value("cpu/model")) &&
 596       xbt_cfg_is_default_value("host/model")) {
 597     host_model_name = "compound";
 598     xbt_cfg_set_string("host/model", host_model_name);
 599   }
 600
 601   XBT_DEBUG("host model: %s", host_model_name);
 602   if (!strcmp(host_model_name, "compound")) {
 603     xbt_assert(cpu_model_name, "Set a cpu model to use with the 'compound' host model");
 604     xbt_assert(network_model_name, "Set a network model to use with the 'compound' host model");
 605
 606     int cpu_id = find_model_description(surf_cpu_model_description, cpu_model_name);
 607     surf_cpu_model_description[cpu_id].model_init_preparse();
 608
 609     int network_id = find_model_description(surf_network_model_description, network_model_name);
 610     surf_network_model_description[network_id].model_init_preparse();
 611   }
 612
 613   XBT_DEBUG("Call host_model_init");
 614   int host_id = find_model_description(surf_host_model_description, host_model_name);
 615   surf_host_model_description[host_id].model_init_preparse();
 616
 617   XBT_DEBUG("Call vm_model_init");
 618   surf_vm_model_init_HL13();
 619
 620   XBT_DEBUG("Call storage_model_init");
 621   int storage_id = find_model_description(surf_storage_model_description, storage_model_name);
 622   surf_storage_model_description[storage_id].model_init_preparse();
 623 }
 624
 625 /**
 626  * \brief Add an AS to the platform
 627  *
 628  * Add a new autonomous system to the platform. Any elements (such as host,
 629  * router or sub-AS) added after this call and before the corresponding call
 630  * to sg_platf_new_AS_seal() will be added to this AS.
 631  *
 632  * Once this function was called, the configuration concerning the used
 633  * models cannot be changed anymore.
 634  *
 635  * @param AS the parameters defining the AS to build.
 636  */
 637 simgrid::s4u::NetZone* sg_platf_new_AS_begin(sg_platf_AS_cbarg_t AS)
 638 {
 639   if (!surf_parse_models_setup_already_called) {
 640     /* Initialize the surf models. That must be done after we got all config, and before we need the models.
 641      * That is, after the last <config> tag, if any, and before the first of cluster|peer|AS|trace|trace_connect
 642      *
 643      * I'm not sure for <trace> and <trace_connect>, there may be a bug here
 644      * (FIXME: check it out by creating a file beginning with one of these tags)
 645      * but cluster and peer create ASes internally, so putting the code in there is ok.
 646      */
 647     surf_parse_models_setup_already_called = 1;
 648     surf_config_models_setup();
 649   }
 650
 651   _sg_cfg_init_status = 2; /* HACK: direct access to the global controlling the level of configuration to prevent
 652                             * any further config now that we created some real content */
 653
 654
 655   /* search the routing model */
 656   simgrid::kernel::routing::NetZoneImpl* new_as = nullptr;
 657   switch(AS->routing){
 658     case A_surfxml_AS_routing_Cluster:
 659       new_as = new simgrid::kernel::routing::ClusterZone(current_routing, AS->id);
 660       break;
 661     case A_surfxml_AS_routing_ClusterDragonfly:
 662       new_as = new simgrid::kernel::routing::DragonflyZone(current_routing, AS->id);
 663       break;
 664     case A_surfxml_AS_routing_ClusterTorus:
 665       new_as = new simgrid::kernel::routing::TorusZone(current_routing, AS->id);
 666       break;
 667     case A_surfxml_AS_routing_ClusterFatTree:
 668       new_as = new simgrid::kernel::routing::FatTreeZone(current_routing, AS->id);
 669       break;
 670     case A_surfxml_AS_routing_Dijkstra:
 671       new_as = new simgrid::kernel::routing::DijkstraZone(current_routing, AS->id, 0);
 672       break;
 673     case A_surfxml_AS_routing_DijkstraCache:
 674       new_as = new simgrid::kernel::routing::DijkstraZone(current_routing, AS->id, 1);
 675       break;
 676     case A_surfxml_AS_routing_Floyd:
 677       new_as = new simgrid::kernel::routing::FloydZone(current_routing, AS->id);
 678       break;
 679     case A_surfxml_AS_routing_Full:
 680       new_as = new simgrid::kernel::routing::FullZone(current_routing, AS->id);
 681       break;
 682     case A_surfxml_AS_routing_None:
 683       new_as = new simgrid::kernel::routing::EmptyZone(current_routing, AS->id);
 684       break;
 685     case A_surfxml_AS_routing_Vivaldi:
 686       new_as = new simgrid::kernel::routing::VivaldiZone(current_routing, AS->id);
 687       break;
 688     default:
 689       xbt_die("Not a valid model!");
 690       break;
 691   }
 692
 693   if (current_routing == nullptr) { /* it is the first one */
 694     xbt_assert(simgrid::s4u::Engine::instance()->pimpl->netRoot_ == nullptr,
 695                "All defined components must belong to a AS");
 696     simgrid::s4u::Engine::instance()->pimpl->netRoot_ = new_as;
 697
 698   } else {
 699     /* set the father behavior */
 700     if (current_routing->hierarchy_ == simgrid::kernel::routing::NetZoneImpl::RoutingMode::unset)
 701       current_routing->hierarchy_ = simgrid::kernel::routing::NetZoneImpl::RoutingMode::recursive;
 702     /* add to the sons dictionary */
 703     xbt_dict_set(current_routing->children(), AS->id, (void *) new_as, nullptr);
 704   }
 705
 706   /* set the new current component of the tree */
 707   current_routing = new_as;
 708
 709   if (TRACE_is_enabled())
 710     sg_instr_AS_begin(AS);
 711
 712   return new_as;
 713 }
 714
 715 /**
 716  * \brief Specify that the description of the current AS is finished
 717  *
 718  * Once you've declared all the content of your AS, you have to seal
 719  * it with this call. Your AS is not usable until you call this function.
 720  */
 721 void sg_platf_new_AS_seal()
 722 {
 723   xbt_assert(current_routing, "Cannot seal the current AS: none under construction");
 724   current_routing->seal();
 725   current_routing = static_cast<simgrid::kernel::routing::NetZoneImpl*>(current_routing->father());
 726
 727   if (TRACE_is_enabled())
 728     sg_instr_AS_end();
 729 }
 730
 731 /** @brief Add a link connecting an host to the rest of its AS (which must be cluster or vivaldi) */
 732 void sg_platf_new_hostlink(sg_platf_host_link_cbarg_t hostlink)
 733 {
 734   simgrid::kernel::routing::NetCard *netcard = sg_host_by_name(hostlink->id)->pimpl_netcard;
 735   xbt_assert(netcard, "Host '%s' not found!", hostlink->id);
 736   xbt_assert(dynamic_cast<simgrid::kernel::routing::ClusterZone*>(current_routing),
 737              "Only hosts from Cluster and Vivaldi ASes can get an host_link.");
 738
 739   simgrid::surf::Link* linkUp   = Link::byName(hostlink->link_up);
 740   simgrid::surf::Link* linkDown = Link::byName(hostlink->link_down);
 741
 742   xbt_assert(linkUp, "Link '%s' not found!", hostlink->link_up);
 743   xbt_assert(linkDown, "Link '%s' not found!", hostlink->link_down);
 744
 745   auto as_cluster = static_cast<simgrid::kernel::routing::ClusterZone*>(current_routing);
 746
 747   if (as_cluster->privateLinks_.find(netcard->id()) != as_cluster->privateLinks_.end())
 748     surf_parse_error("Host_link for '%s' is already defined!",hostlink->id);
 749
 750   XBT_DEBUG("Push Host_link for host '%s' to position %d", netcard->cname(), netcard->id());
 751   as_cluster->privateLinks_.insert({netcard->id(), {linkUp, linkDown}});
 752 }
 753
 754 void sg_platf_new_trace(sg_platf_trace_cbarg_t trace)
 755 {
 756   tmgr_trace_t tmgr_trace;
 757   if (trace->file && strcmp(trace->file, "") != 0) {
 758     tmgr_trace = tmgr_trace_new_from_file(trace->file);
 759   } else {
 760     xbt_assert(strcmp(trace->pc_data, ""),
 761         "Trace '%s' must have either a content, or point to a file on disk.",trace->id);
 762     tmgr_trace = tmgr_trace_new_from_string(trace->id, trace->pc_data, trace->periodicity);
 763   }
 764   xbt_dict_set(traces_set_list, trace->id, static_cast<void*>(tmgr_trace), nullptr);
 765 }