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 "xbt/misc.h"
   8 #include "xbt/log.h"
   9 #include "xbt/str.h"
  10 #include "xbt/dict.h"
  11 #include "xbt/RngStream.h"
  12 #include <xbt/functional.hpp>
  13 #include <xbt/signal.hpp>
  14 #include "src/surf/HostImpl.hpp"
  15 #include "surf/surf.h"
  16
  17 #include "simgrid/s4u/engine.hpp"
  18 #include "src/kernel/EngineImpl.hpp"
  19 #include "src/simix/smx_private.h"
  20
  21 #include "src/include/simgrid/sg_config.h"
  22 #include "src/surf/xml/platf_private.hpp"
  23
  24 #include "src/surf/HostImpl.hpp"
  25 #include "src/surf/cpu_interface.hpp"
  26 #include "src/surf/network_interface.hpp"
  27
  28 #include "src/kernel/routing/ClusterZone.hpp"
  29 #include "src/kernel/routing/DijkstraZone.hpp"
  30 #include "src/kernel/routing/DragonflyZone.hpp"
  31 #include "src/kernel/routing/EmptyZone.hpp"
  32 #include "src/kernel/routing/FatTreeZone.hpp"
  33 #include "src/kernel/routing/FloydZone.hpp"
  34 #include "src/kernel/routing/FullZone.hpp"
  35 #include "src/kernel/routing/NetCard.hpp"
  36 #include "src/kernel/routing/NetZoneImpl.hpp"
  37 #include "src/kernel/routing/TorusZone.hpp"
  38 #include "src/kernel/routing/VivaldiZone.hpp"
  39
  40 XBT_LOG_EXTERNAL_DEFAULT_CATEGORY(surf_parse);
  41
  42 XBT_PRIVATE xbt_dynar_t mount_list = nullptr;
  43
  44 namespace simgrid {
  45 namespace surf {
  46
  47 simgrid::xbt::signal<void(sg_platf_link_cbarg_t)> on_link;
  48 simgrid::xbt::signal<void(sg_platf_cluster_cbarg_t)> on_cluster;
  49 simgrid::xbt::signal<void(void)> on_postparse;
  50
  51 }
  52 }
  53
  54 static int surf_parse_models_setup_already_called = 0;
  55
  56 /** The current AS in the parsing */
  57 static simgrid::kernel::routing::NetZoneImpl* current_routing = nullptr;
  58 static simgrid::kernel::routing::NetZoneImpl* routing_get_current()
  59 {
  60   return current_routing;
  61 }
  62
  63 /** Module management function: creates all internal data structures */
  64 void sg_platf_init() {
  65 }
  66
  67 /** Module management function: frees all internal data structures */
  68 void sg_platf_exit() {
  69   simgrid::surf::on_link.disconnect_all_slots();
  70   simgrid::surf::on_cluster.disconnect_all_slots();
  71   simgrid::surf::on_postparse.disconnect_all_slots();
  72
  73   /* make sure that we will reinit the models while loading the platf once reinited */
  74   surf_parse_models_setup_already_called = 0;
  75   surf_parse_lex_destroy();
  76 }
  77
  78 /** @brief Add an host to the current AS */
  79 void sg_platf_new_host(sg_platf_host_cbarg_t args)
  80 {
  81   simgrid::s4u::Host* host = routing_get_current()->createHost(args->id, &args->speed_per_pstate, args->core_amount);
  82
  83   new simgrid::surf::HostImpl(host, mount_list);
  84   xbt_lib_set(storage_lib, args->id, ROUTING_STORAGE_HOST_LEVEL, static_cast<void*>(mount_list));
  85   mount_list = nullptr;
  86
  87   if (args->properties) {
  88     xbt_dict_cursor_t cursor=nullptr;
  89     char *key,*data;
  90     xbt_dict_foreach (args->properties, cursor, key, data)
  91       host->setProperty(key, data);
  92     xbt_dict_free(&args->properties);
  93   }
  94
  95   /* Change from the defaults */
  96   if (args->state_trace)
  97     host->pimpl_cpu->setStateTrace(args->state_trace);
  98   if (args->speed_trace)
  99     host->pimpl_cpu->setSpeedTrace(args->speed_trace);
 100   if (args->pstate != 0)
 101     host->pimpl_cpu->setPState(args->pstate);
 102   if (args->coord && strcmp(args->coord, ""))
 103     new simgrid::kernel::routing::vivaldi::Coords(host->pimpl_netcard, args->coord);
 104
 105   simgrid::s4u::Host::onCreation(*host);
 106
 107   if (TRACE_is_enabled() && TRACE_needs_platform())
 108     sg_instr_new_host(*host);
 109 }
 110
 111 /** @brief Add a "router" to the network element list */
 112 void sg_platf_new_router(sg_platf_router_cbarg_t router)
 113 {
 114   simgrid::kernel::routing::NetZoneImpl* current_routing = routing_get_current();
 115
 116   if (current_routing->hierarchy_ == simgrid::kernel::routing::NetZoneImpl::RoutingMode::unset)
 117     current_routing->hierarchy_ = simgrid::kernel::routing::NetZoneImpl::RoutingMode::base;
 118   xbt_assert(nullptr == xbt_dict_get_or_null(netcards_dict, router->id),
 119              "Refusing to create a router named '%s': this name already describes a node.", router->id);
 120
 121   simgrid::kernel::routing::NetCard* netcard =
 122     new simgrid::kernel::routing::NetCard(router->id, simgrid::kernel::routing::NetCard::Type::Router, current_routing);
 123   xbt_dict_set(netcards_dict, router->id, netcard, nullptr);
 124   XBT_DEBUG("Router '%s' has the id %d", router->id, netcard->id());
 125
 126   if (router->coord && strcmp(router->coord, ""))
 127     new simgrid::kernel::routing::vivaldi::Coords(netcard, router->coord);
 128
 129   auto cluster = dynamic_cast<simgrid::kernel::routing::ClusterZone*>(current_routing);
 130   if(cluster != nullptr)
 131     cluster->router_ = static_cast<simgrid::kernel::routing::NetCard*>(xbt_dict_get_or_null(netcards_dict, router->id));
 132
 133   if (TRACE_is_enabled() && TRACE_needs_platform())
 134     sg_instr_new_router(router);
 135 }
 136
 137 void sg_platf_new_link(sg_platf_link_cbarg_t link){
 138   std::vector<char*> names;
 139
 140   if (link->policy == SURF_LINK_FULLDUPLEX) {
 141     names.push_back(bprintf("%s_UP", link->id));
 142     names.push_back(bprintf("%s_DOWN", link->id));
 143   } else {
 144     names.push_back(xbt_strdup(link->id));
 145   }
 146   for (auto link_name : names) {
 147     Link* l = surf_network_model->createLink(link_name, link->bandwidth, link->latency, link->policy);
 148
 149     if (link->properties) {
 150       xbt_dict_cursor_t cursor = nullptr;
 151       char *key, *data;
 152       xbt_dict_foreach (link->properties, cursor, key, data)
 153         l->setProperty(key, data);
 154       xbt_dict_free(&link->properties);
 155     }
 156
 157     if (link->latency_trace)
 158       l->setLatencyTrace(link->latency_trace);
 159     if (link->bandwidth_trace)
 160       l->setBandwidthTrace(link->bandwidth_trace);
 161     if (link->state_trace)
 162       l->setStateTrace(link->state_trace);
 163
 164     xbt_free(link_name);
 165   }
 166
 167   simgrid::surf::on_link(link);
 168 }
 169
 170 void sg_platf_new_cluster(sg_platf_cluster_cbarg_t cluster)
 171 {
 172   using simgrid::kernel::routing::ClusterZone;
 173   using simgrid::kernel::routing::DragonflyZone;
 174   using simgrid::kernel::routing::FatTreeZone;
 175   using simgrid::kernel::routing::TorusZone;
 176
 177   int rankId=0;
 178
 179   s_sg_platf_link_cbarg_t link;
 180
 181   // What an inventive way of initializing the AS that I have as ancestor :-(
 182   s_sg_platf_AS_cbarg_t AS;
 183   AS.id = cluster->id;
 184   switch (cluster->topology) {
 185   case SURF_CLUSTER_TORUS:
 186     AS.routing = A_surfxml_AS_routing_ClusterTorus;
 187     break;
 188   case SURF_CLUSTER_DRAGONFLY:
 189     AS.routing = A_surfxml_AS_routing_ClusterDragonfly;
 190     break;
 191   case SURF_CLUSTER_FAT_TREE:
 192     AS.routing = A_surfxml_AS_routing_ClusterFatTree;
 193     break;
 194   default:
 195     AS.routing = A_surfxml_AS_routing_Cluster;
 196     break;
 197   }
 198   sg_platf_new_AS_begin(&AS);
 199   simgrid::kernel::routing::ClusterZone* current_as = static_cast<ClusterZone*>(routing_get_current());
 200   current_as->parse_specific_arguments(cluster);
 201
 202   if(cluster->loopback_bw!=0 || cluster->loopback_lat!=0){
 203     current_as->linkCountPerNode_++;
 204     current_as->hasLoopback_ = 1;
 205   }
 206
 207   if(cluster->limiter_link!=0){
 208     current_as->linkCountPerNode_++;
 209     current_as->hasLimiter_ = 1;
 210   }
 211
 212   for (int i : *cluster->radicals) {
 213     char * host_id = bprintf("%s%d%s", cluster->prefix, i, cluster->suffix);
 214     char * link_id = bprintf("%s_link_%d", cluster->id, i);
 215
 216     XBT_DEBUG("<host\tid=\"%s\"\tpower=\"%f\">", host_id, cluster->speed);
 217
 218     s_sg_platf_host_cbarg_t host;
 219     memset(&host, 0, sizeof(host));
 220     host.id = host_id;
 221     if ((cluster->properties != nullptr) && (!xbt_dict_is_empty(cluster->properties))) {
 222       xbt_dict_cursor_t cursor=nullptr;
 223       char *key,*data;
 224       host.properties = xbt_dict_new_homogeneous(free);
 225
 226       xbt_dict_foreach(cluster->properties,cursor,key,data) {
 227         xbt_dict_set(host.properties, key, xbt_strdup(data), nullptr);
 228       }
 229     }
 230
 231     host.speed_per_pstate.push_back(cluster->speed);
 232     host.pstate = 0;
 233     host.core_amount = cluster->core_amount;
 234     host.coord = "";
 235     sg_platf_new_host(&host);
 236     XBT_DEBUG("</host>");
 237
 238     XBT_DEBUG("<link\tid=\"%s\"\tbw=\"%f\"\tlat=\"%f\"/>", link_id, cluster->bw, cluster->lat);
 239
 240     // All links are saved in a matrix;
 241     // every row describes a single node; every node may have multiple links.
 242     // the first column may store a link from x to x if p_has_loopback is set
 243     // the second column may store a limiter link if p_has_limiter is set
 244     // other columns are to store one or more link for the node
 245
 246     //add a loopback link
 247     Link* linkUp   = nullptr;
 248     Link* linkDown = nullptr;
 249     if(cluster->loopback_bw!=0 || cluster->loopback_lat!=0){
 250       char *tmp_link = bprintf("%s_loopback", link_id);
 251       XBT_DEBUG("<loopback\tid=\"%s\"\tbw=\"%f\"/>", tmp_link, cluster->loopback_bw);
 252
 253       memset(&link, 0, sizeof(link));
 254       link.id        = tmp_link;
 255       link.bandwidth = cluster->loopback_bw;
 256       link.latency   = cluster->loopback_lat;
 257       link.policy    = SURF_LINK_FATPIPE;
 258       sg_platf_new_link(&link);
 259       linkUp   = Link::byName(tmp_link);
 260       linkDown = Link::byName(tmp_link);
 261       free(tmp_link);
 262
 263       auto as_cluster = static_cast<ClusterZone*>(current_as);
 264       as_cluster->privateLinks_.insert({rankId * as_cluster->linkCountPerNode_, {linkUp, linkDown}});
 265     }
 266
 267     //add a limiter link (shared link to account for maximal bandwidth of the node)
 268     linkUp   = nullptr;
 269     linkDown = nullptr;
 270     if(cluster->limiter_link!=0){
 271       char *tmp_link = bprintf("%s_limiter", link_id);
 272       XBT_DEBUG("<limiter\tid=\"%s\"\tbw=\"%f\"/>", tmp_link, cluster->limiter_link);
 273
 274       memset(&link, 0, sizeof(link));
 275       link.id = tmp_link;
 276       link.bandwidth = cluster->limiter_link;
 277       link.latency = 0;
 278       link.policy = SURF_LINK_SHARED;
 279       sg_platf_new_link(&link);
 280       linkUp = linkDown = Link::byName(tmp_link);
 281       free(tmp_link);
 282       current_as->privateLinks_.insert(
 283           {rankId * current_as->linkCountPerNode_ + current_as->hasLoopback_, {linkUp, linkDown}});
 284     }
 285
 286     //call the cluster function that adds the others links
 287     if (cluster->topology == SURF_CLUSTER_FAT_TREE) {
 288       static_cast<FatTreeZone*>(current_as)->addProcessingNode(i);
 289     }
 290     else {
 291       current_as->create_links_for_node(cluster, i, rankId,
 292           rankId*current_as->linkCountPerNode_ + current_as->hasLoopback_ + current_as->hasLimiter_ );
 293     }
 294     xbt_free(link_id);
 295     xbt_free(host_id);
 296     rankId++;
 297   }
 298
 299   // Add a router. It is magically used thanks to the way in which surf_routing_cluster is written,
 300   // and it's very useful to connect clusters together
 301   XBT_DEBUG(" ");
 302   XBT_DEBUG("<router id=\"%s\"/>", cluster->router_id);
 303   char *newid = nullptr;
 304   s_sg_platf_router_cbarg_t router;
 305   memset(&router, 0, sizeof(router));
 306   router.id = cluster->router_id;
 307   if (!router.id || !strcmp(router.id, ""))
 308     router.id = newid = bprintf("%s%s_router%s", cluster->prefix, cluster->id, cluster->suffix);
 309   sg_platf_new_router(&router);
 310   current_as->router_ = (simgrid::kernel::routing::NetCard*)xbt_dict_get_or_null(netcards_dict, router.id);
 311   free(newid);
 312
 313   //Make the backbone
 314   if ((cluster->bb_bw != 0) || (cluster->bb_lat != 0)) {
 315
 316     memset(&link, 0, sizeof(link));
 317     link.id        = bprintf("%s_backbone", cluster->id);
 318     link.bandwidth = cluster->bb_bw;
 319     link.latency   = cluster->bb_lat;
 320     link.policy    = cluster->bb_sharing_policy;
 321
 322     XBT_DEBUG("<link\tid=\"%s\" bw=\"%f\" lat=\"%f\"/>", link.id, cluster->bb_bw, cluster->bb_lat);
 323     sg_platf_new_link(&link);
 324
 325     routing_cluster_add_backbone(Link::byName(link.id));
 326     free((char*)link.id);
 327   }
 328
 329   XBT_DEBUG("</AS>");
 330   sg_platf_new_AS_seal();
 331
 332   simgrid::surf::on_cluster(cluster);
 333   delete cluster->radicals;
 334 }
 335 void routing_cluster_add_backbone(simgrid::surf::Link* bb) {
 336   simgrid::kernel::routing::ClusterZone* cluster =
 337       dynamic_cast<simgrid::kernel::routing::ClusterZone*>(current_routing);
 338
 339   xbt_assert(cluster, "Only hosts from Cluster can get a backbone.");
 340   xbt_assert(nullptr == cluster->backbone_, "Cluster %s already has a backbone link!", cluster->name());
 341
 342   cluster->backbone_ = bb;
 343   XBT_DEBUG("Add a backbone to AS '%s'", current_routing->name());
 344 }
 345
 346 void sg_platf_new_cabinet(sg_platf_cabinet_cbarg_t cabinet)
 347 {
 348   for (int radical : *cabinet->radicals) {
 349     char *hostname = bprintf("%s%d%s", cabinet->prefix, radical, cabinet->suffix);
 350     s_sg_platf_host_cbarg_t host;
 351     memset(&host, 0, sizeof(host));
 352     host.pstate           = 0;
 353     host.core_amount      = 1;
 354     host.id               = hostname;
 355     host.speed_per_pstate.push_back(cabinet->speed);
 356     sg_platf_new_host(&host);
 357
 358     s_sg_platf_link_cbarg_t link;
 359     memset(&link, 0, sizeof(link));
 360     link.policy    = SURF_LINK_FULLDUPLEX;
 361     link.latency   = cabinet->lat;
 362     link.bandwidth = cabinet->bw;
 363     link.id        = bprintf("link_%s",hostname);
 364     sg_platf_new_link(&link);
 365     free((char*)link.id);
 366
 367     s_sg_platf_host_link_cbarg_t host_link;
 368     memset(&host_link, 0, sizeof(host_link));
 369     host_link.id        = hostname;
 370     host_link.link_up   = bprintf("link_%s_UP",hostname);
 371     host_link.link_down = bprintf("link_%s_DOWN",hostname);
 372     sg_platf_new_hostlink(&host_link);
 373     free((char*)host_link.link_up);
 374     free((char*)host_link.link_down);
 375
 376     free(hostname);
 377   }
 378   delete cabinet->radicals;
 379 }
 380
 381 void sg_platf_new_storage(sg_platf_storage_cbarg_t storage)
 382 {
 383   xbt_assert(!xbt_lib_get_or_null(storage_lib, storage->id,ROUTING_STORAGE_LEVEL),
 384                "Refusing to add a second storage named \"%s\"", storage->id);
 385
 386   void* stype = xbt_lib_get_or_null(storage_type_lib, storage->type_id,ROUTING_STORAGE_TYPE_LEVEL);
 387   xbt_assert(stype,"No storage type '%s'", storage->type_id);
 388
 389   XBT_DEBUG("ROUTING Create a storage name '%s' with type_id '%s' and content '%s'",
 390       storage->id,
 391       storage->type_id,
 392       storage->content);
 393
 394   xbt_lib_set(storage_lib, storage->id, ROUTING_STORAGE_LEVEL, (void *) xbt_strdup(storage->type_id));
 395
 396   // if storage content is not specified use the content of storage_type if any
 397   if(!strcmp(storage->content,"") && strcmp(((storage_type_t) stype)->content,"")){
 398     storage->content = ((storage_type_t) stype)->content;
 399     storage->content_type = ((storage_type_t) stype)->content_type;
 400     XBT_DEBUG("For disk '%s' content is empty, inherit the content (of type %s) from storage type '%s' ",
 401         storage->id,((storage_type_t) stype)->content_type,
 402         ((storage_type_t) stype)->type_id);
 403   }
 404
 405   XBT_DEBUG("SURF storage create resource\n\t\tid '%s'\n\t\ttype '%s' "
 406       "\n\t\tmodel '%s' \n\t\tcontent '%s'\n\t\tcontent_type '%s' "
 407       "\n\t\tproperties '%p''\n",
 408       storage->id,
 409       ((storage_type_t) stype)->model,
 410       ((storage_type_t) stype)->type_id,
 411       storage->content,
 412       storage->content_type,
 413     storage->properties);
 414
 415   auto s = surf_storage_model->createStorage(storage->id, ((storage_type_t)stype)->type_id, storage->content,
 416                                              storage->content_type, storage->attach);
 417
 418   if (storage->properties) {
 419     xbt_dict_cursor_t cursor = nullptr;
 420     char *key, *data;
 421     xbt_dict_foreach (storage->properties, cursor, key, data)
 422       s->setProperty(key, data);
 423     xbt_dict_free(&storage->properties);
 424   }
 425 }
 426 void sg_platf_new_storage_type(sg_platf_storage_type_cbarg_t storage_type){
 427
 428   xbt_assert(!xbt_lib_get_or_null(storage_type_lib, storage_type->id,ROUTING_STORAGE_TYPE_LEVEL),
 429                "Reading a storage type, processing unit \"%s\" already exists", storage_type->id);
 430
 431   storage_type_t stype = xbt_new0(s_storage_type_t, 1);
 432   stype->model = xbt_strdup(storage_type->model);
 433   stype->properties = storage_type->properties;
 434   stype->content = xbt_strdup(storage_type->content);
 435   stype->content_type = xbt_strdup(storage_type->content_type);
 436   stype->type_id = xbt_strdup(storage_type->id);
 437   stype->size = storage_type->size;
 438   stype->model_properties = storage_type->model_properties;
 439
 440   XBT_DEBUG("ROUTING Create a storage type id '%s' with model '%s', "
 441       "content '%s', and content_type '%s'",
 442       stype->type_id,
 443       stype->model,
 444       storage_type->content,
 445       storage_type->content_type);
 446
 447   xbt_lib_set(storage_type_lib,
 448       stype->type_id,
 449       ROUTING_STORAGE_TYPE_LEVEL,
 450       (void *) stype);
 451 }
 452
 453 static void mount_free(void *p)
 454 {
 455   mount_t mnt = (mount_t) p;
 456   xbt_free(mnt->name);
 457 }
 458
 459 void sg_platf_new_mount(sg_platf_mount_cbarg_t mount){
 460   xbt_assert(xbt_lib_get_or_null(storage_lib, mount->storageId, ROUTING_STORAGE_LEVEL),
 461       "Cannot mount non-existent disk \"%s\"", mount->storageId);
 462
 463   XBT_DEBUG("ROUTING Mount '%s' on '%s'",mount->storageId, mount->name);
 464
 465   s_mount_t mnt;
 466   mnt.storage = surf_storage_resource_priv(surf_storage_resource_by_name(mount->storageId));
 467   mnt.name = xbt_strdup(mount->name);
 468
 469   if(!mount_list){
 470     XBT_DEBUG("Create a Mount list for %s",A_surfxml_host_id);
 471     mount_list = xbt_dynar_new(sizeof(s_mount_t), mount_free);
 472   }
 473   xbt_dynar_push(mount_list, &mnt);
 474 }
 475
 476 void sg_platf_new_route(sg_platf_route_cbarg_t route)
 477 {
 478   routing_get_current()->addRoute(route);
 479 }
 480
 481 void sg_platf_new_bypassRoute(sg_platf_route_cbarg_t bypassRoute)
 482 {
 483   routing_get_current()->addBypassRoute(bypassRoute);
 484 }
 485
 486 void sg_platf_new_process(sg_platf_process_cbarg_t process)
 487 {
 488   sg_host_t host = sg_host_by_name(process->host);
 489   if (!host) {
 490     // The requested host does not exist. Do a nice message to the user
 491     char *tmp = bprintf("Cannot create process '%s': host '%s' does not exist\nExisting hosts: '",process->function, process->host);
 492     xbt_strbuff_t msg = xbt_strbuff_new_from(tmp);
 493     free(tmp);
 494     xbt_dynar_t all_hosts = xbt_dynar_sort_strings(sg_hosts_as_dynar());
 495     simgrid::s4u::Host* host;
 496     unsigned int cursor;
 497     xbt_dynar_foreach(all_hosts,cursor, host) {
 498       xbt_strbuff_append(msg, host->cname());
 499       xbt_strbuff_append(msg,"', '");
 500       if (msg->used > 1024) {
 501         msg->data[msg->used-3]='\0';
 502         msg->used -= 3;
 503
 504         xbt_strbuff_append(msg," ...(list truncated)......");// That will be shortened by 3 chars when existing the loop
 505         break;
 506       }
 507     }
 508     msg->data[msg->used-3]='\0';
 509     xbt_die("%s", msg->data);
 510   }
 511   simgrid::simix::ActorCodeFactory& factory = SIMIX_get_actor_code_factory(process->function);
 512   xbt_assert(factory, "Function '%s' unknown", process->function);
 513
 514   double start_time = process->start_time;
 515   double kill_time  = process->kill_time;
 516   int auto_restart = process->on_failure == SURF_PROCESS_ON_FAILURE_DIE ? 0 : 1;
 517
 518   std::vector<std::string> args(process->argv, process->argv + process->argc);
 519   std::function<void()> code = factory(std::move(args));
 520
 521   smx_process_arg_t arg = nullptr;
 522   smx_actor_t process_created = nullptr;
 523
 524   arg = new simgrid::simix::ProcessArg();
 525   arg->name = std::string(process->argv[0]);
 526   arg->code = code;
 527   arg->data = nullptr;
 528   arg->host = host;
 529   arg->kill_time = kill_time;
 530   arg->properties = current_property_set;
 531
 532   sg_host_simix(host)->boot_processes.push_back(arg);
 533
 534   if (start_time > SIMIX_get_clock()) {
 535
 536     arg = new simgrid::simix::ProcessArg();
 537     arg->name = std::string(process->argv[0]);
 538     arg->code = std::move(code);
 539     arg->data = nullptr;
 540     arg->host = host;
 541     arg->kill_time = kill_time;
 542     arg->properties = current_property_set;
 543
 544     XBT_DEBUG("Process %s@%s will be started at time %f", arg->name.c_str(), arg->host->cname(), start_time);
 545     SIMIX_timer_set(start_time, [=]() {
 546       simix_global->create_process_function(
 547                                             arg->name.c_str(),
 548                                             std::move(arg->code),
 549                                             arg->data,
 550                                             arg->host,
 551                                             arg->kill_time,
 552                                             arg->properties,
 553                                             arg->auto_restart,
 554                                             nullptr);
 555       delete arg;
 556     });
 557   } else {                      // start_time <= SIMIX_get_clock()
 558     XBT_DEBUG("Starting Process %s(%s) right now", arg->name.c_str(), host->cname());
 559
 560     process_created = simix_global->create_process_function(
 561         arg->name.c_str(), std::move(code), nullptr,
 562         host, kill_time,
 563         current_property_set, auto_restart, nullptr);
 564
 565     /* verify if process has been created (won't be the case if the host is currently dead, but that's fine) */
 566     if (!process_created) {
 567       return;
 568     }
 569   }
 570   current_property_set = nullptr;
 571 }
 572
 573 void sg_platf_new_peer(sg_platf_peer_cbarg_t peer)
 574 {
 575   simgrid::kernel::routing::VivaldiZone* as = dynamic_cast<simgrid::kernel::routing::VivaldiZone*>(current_routing);
 576   xbt_assert(as, "<peer> tag can only be used in Vivaldi ASes");
 577
 578   std::vector<double> speedPerPstate;
 579   speedPerPstate.push_back(peer->speed);
 580   simgrid::s4u::Host* host = as->createHost(peer->id, &speedPerPstate, 1);
 581
 582   as->setPeerLink(host->pimpl_netcard, peer->bw_in, peer->bw_out, peer->lat, peer->coord);
 583   simgrid::s4u::Host::onCreation(*host);
 584
 585   /* Change from the defaults */
 586   if (peer->state_trace)
 587     host->pimpl_cpu->setStateTrace(peer->state_trace);
 588   if (peer->speed_trace)
 589     host->pimpl_cpu->setSpeedTrace(peer->speed_trace);
 590 }
 591
 592 void sg_platf_begin() { /* Do nothing: just for symmetry of user code */ }
 593
 594 void sg_platf_end() {
 595   simgrid::surf::on_postparse();
 596 }
 597
 598 /* Pick the right models for CPU, net and host, and call their model_init_preparse */
 599 static void surf_config_models_setup()
 600 {
 601   const char* host_model_name    = xbt_cfg_get_string("host/model");
 602   const char* network_model_name = xbt_cfg_get_string("network/model");
 603   const char* cpu_model_name     = xbt_cfg_get_string("cpu/model");
 604   const char* storage_model_name = xbt_cfg_get_string("storage/model");
 605
 606   /* The compound host model is needed when using non-default net/cpu models */
 607   if ((!xbt_cfg_is_default_value("network/model") || !xbt_cfg_is_default_value("cpu/model")) &&
 608       xbt_cfg_is_default_value("host/model")) {
 609     host_model_name = "compound";
 610     xbt_cfg_set_string("host/model", host_model_name);
 611   }
 612
 613   XBT_DEBUG("host model: %s", host_model_name);
 614   if (!strcmp(host_model_name, "compound")) {
 615     xbt_assert(cpu_model_name, "Set a cpu model to use with the 'compound' host model");
 616     xbt_assert(network_model_name, "Set a network model to use with the 'compound' host model");
 617
 618     int cpu_id = find_model_description(surf_cpu_model_description, cpu_model_name);
 619     surf_cpu_model_description[cpu_id].model_init_preparse();
 620
 621     int network_id = find_model_description(surf_network_model_description, network_model_name);
 622     surf_network_model_description[network_id].model_init_preparse();
 623   }
 624
 625   XBT_DEBUG("Call host_model_init");
 626   int host_id = find_model_description(surf_host_model_description, host_model_name);
 627   surf_host_model_description[host_id].model_init_preparse();
 628
 629   XBT_DEBUG("Call vm_model_init");
 630   surf_vm_model_init_HL13();
 631
 632   XBT_DEBUG("Call storage_model_init");
 633   int storage_id = find_model_description(surf_storage_model_description, storage_model_name);
 634   surf_storage_model_description[storage_id].model_init_preparse();
 635 }
 636
 637 /**
 638  * \brief Add an AS to the platform
 639  *
 640  * Add a new autonomous system to the platform. Any elements (such as host,
 641  * router or sub-AS) added after this call and before the corresponding call
 642  * to sg_platf_new_AS_seal() will be added to this AS.
 643  *
 644  * Once this function was called, the configuration concerning the used
 645  * models cannot be changed anymore.
 646  *
 647  * @param AS the parameters defining the AS to build.
 648  */
 649 simgrid::s4u::NetZone* sg_platf_new_AS_begin(sg_platf_AS_cbarg_t AS)
 650 {
 651   if (!surf_parse_models_setup_already_called) {
 652     /* Initialize the surf models. That must be done after we got all config, and before we need the models.
 653      * That is, after the last <config> tag, if any, and before the first of cluster|peer|AS|trace|trace_connect
 654      *
 655      * I'm not sure for <trace> and <trace_connect>, there may be a bug here
 656      * (FIXME: check it out by creating a file beginning with one of these tags)
 657      * but cluster and peer create ASes internally, so putting the code in there is ok.
 658      */
 659     surf_parse_models_setup_already_called = 1;
 660     surf_config_models_setup();
 661   }
 662
 663   _sg_cfg_init_status = 2; /* HACK: direct access to the global controlling the level of configuration to prevent
 664                             * any further config now that we created some real content */
 665
 666
 667   /* search the routing model */
 668   simgrid::kernel::routing::NetZoneImpl* new_as = nullptr;
 669   switch(AS->routing){
 670     case A_surfxml_AS_routing_Cluster:
 671       new_as = new simgrid::kernel::routing::ClusterZone(current_routing, AS->id);
 672       break;
 673     case A_surfxml_AS_routing_ClusterDragonfly:
 674       new_as = new simgrid::kernel::routing::DragonflyZone(current_routing, AS->id);
 675       break;
 676     case A_surfxml_AS_routing_ClusterTorus:
 677       new_as = new simgrid::kernel::routing::TorusZone(current_routing, AS->id);
 678       break;
 679     case A_surfxml_AS_routing_ClusterFatTree:
 680       new_as = new simgrid::kernel::routing::FatTreeZone(current_routing, AS->id);
 681       break;
 682     case A_surfxml_AS_routing_Dijkstra:
 683       new_as = new simgrid::kernel::routing::DijkstraZone(current_routing, AS->id, 0);
 684       break;
 685     case A_surfxml_AS_routing_DijkstraCache:
 686       new_as = new simgrid::kernel::routing::DijkstraZone(current_routing, AS->id, 1);
 687       break;
 688     case A_surfxml_AS_routing_Floyd:
 689       new_as = new simgrid::kernel::routing::FloydZone(current_routing, AS->id);
 690       break;
 691     case A_surfxml_AS_routing_Full:
 692       new_as = new simgrid::kernel::routing::FullZone(current_routing, AS->id);
 693       break;
 694     case A_surfxml_AS_routing_None:
 695       new_as = new simgrid::kernel::routing::EmptyZone(current_routing, AS->id);
 696       break;
 697     case A_surfxml_AS_routing_Vivaldi:
 698       new_as = new simgrid::kernel::routing::VivaldiZone(current_routing, AS->id);
 699       break;
 700     default:
 701       xbt_die("Not a valid model!");
 702       break;
 703   }
 704
 705   if (current_routing == nullptr) { /* it is the first one */
 706     xbt_assert(simgrid::s4u::Engine::instance()->pimpl->netRoot_ == nullptr,
 707                "All defined components must belong to a AS");
 708     simgrid::s4u::Engine::instance()->pimpl->netRoot_ = new_as;
 709
 710   } else {
 711     /* set the father behavior */
 712     if (current_routing->hierarchy_ == simgrid::kernel::routing::NetZoneImpl::RoutingMode::unset)
 713       current_routing->hierarchy_ = simgrid::kernel::routing::NetZoneImpl::RoutingMode::recursive;
 714     /* add to the sons dictionary */
 715     xbt_dict_set(current_routing->children(), AS->id, (void *) new_as, nullptr);
 716   }
 717
 718   /* set the new current component of the tree */
 719   current_routing = new_as;
 720
 721   if (TRACE_is_enabled())
 722     sg_instr_AS_begin(AS);
 723
 724   return new_as;
 725 }
 726
 727 /**
 728  * \brief Specify that the description of the current AS is finished
 729  *
 730  * Once you've declared all the content of your AS, you have to seal
 731  * it with this call. Your AS is not usable until you call this function.
 732  */
 733 void sg_platf_new_AS_seal()
 734 {
 735   xbt_assert(current_routing, "Cannot seal the current AS: none under construction");
 736   current_routing->seal();
 737   current_routing = static_cast<simgrid::kernel::routing::NetZoneImpl*>(current_routing->father());
 738
 739   if (TRACE_is_enabled())
 740     sg_instr_AS_end();
 741 }
 742
 743 /** @brief Add a link connecting an host to the rest of its AS (which must be cluster or vivaldi) */
 744 void sg_platf_new_hostlink(sg_platf_host_link_cbarg_t hostlink)
 745 {
 746   simgrid::kernel::routing::NetCard *netcard = sg_host_by_name(hostlink->id)->pimpl_netcard;
 747   xbt_assert(netcard, "Host '%s' not found!", hostlink->id);
 748   xbt_assert(dynamic_cast<simgrid::kernel::routing::ClusterZone*>(current_routing),
 749              "Only hosts from Cluster and Vivaldi ASes can get an host_link.");
 750
 751   simgrid::surf::Link* linkUp   = Link::byName(hostlink->link_up);
 752   simgrid::surf::Link* linkDown = Link::byName(hostlink->link_down);
 753
 754   xbt_assert(linkUp, "Link '%s' not found!", hostlink->link_up);
 755   xbt_assert(linkDown, "Link '%s' not found!", hostlink->link_down);
 756
 757   auto as_cluster = static_cast<simgrid::kernel::routing::ClusterZone*>(current_routing);
 758
 759   if (as_cluster->privateLinks_.find(netcard->id()) != as_cluster->privateLinks_.end())
 760     surf_parse_error("Host_link for '%s' is already defined!",hostlink->id);
 761
 762   XBT_DEBUG("Push Host_link for host '%s' to position %d", netcard->cname(), netcard->id());
 763   as_cluster->privateLinks_.insert({netcard->id(), {linkUp, linkDown}});
 764 }
 765
 766 void sg_platf_new_trace(sg_platf_trace_cbarg_t trace)
 767 {
 768   tmgr_trace_t tmgr_trace;
 769   if (trace->file && strcmp(trace->file, "") != 0) {
 770     tmgr_trace = tmgr_trace_new_from_file(trace->file);
 771   } else {
 772     xbt_assert(strcmp(trace->pc_data, ""),
 773         "Trace '%s' must have either a content, or point to a file on disk.",trace->id);
 774     tmgr_trace = tmgr_trace_new_from_string(trace->id, trace->pc_data, trace->periodicity);
 775   }
 776   xbt_dict_set(traces_set_list, trace->id, static_cast<void*>(tmgr_trace), nullptr);
 777 }