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 "src/simix/smx_private.h"
  18
  19 #include "src/include/simgrid/sg_config.h"
  20 #include "src/surf/xml/platf_private.hpp"
  21
  22 #include "src/surf/HostImpl.hpp"
  23 #include "src/surf/cpu_interface.hpp"
  24 #include "src/surf/network_interface.hpp"
  25 #include "surf/surf_routing.h" // FIXME: brain dead public header
  26
  27 #include "src/kernel/routing/AsImpl.hpp"
  28 #include "src/kernel/routing/AsCluster.hpp"
  29 #include "src/kernel/routing/AsClusterTorus.hpp"
  30 #include "src/kernel/routing/AsClusterFatTree.hpp"
  31 #include "src/kernel/routing/AsClusterDragonfly.hpp"
  32 #include "src/kernel/routing/AsDijkstra.hpp"
  33 #include "src/kernel/routing/AsFloyd.hpp"
  34 #include "src/kernel/routing/AsFull.hpp"
  35 #include "src/kernel/routing/AsNone.hpp"
  36 #include "src/kernel/routing/AsVivaldi.hpp"
  37
  38 XBT_LOG_EXTERNAL_DEFAULT_CATEGORY(surf_parse);
  39
  40 XBT_PRIVATE xbt_dynar_t mount_list = nullptr;
  41
  42 namespace simgrid {
  43 namespace surf {
  44
  45 simgrid::xbt::signal<void(sg_platf_link_cbarg_t)> on_link;
  46 simgrid::xbt::signal<void(sg_platf_cluster_cbarg_t)> on_cluster;
  47 simgrid::xbt::signal<void(void)> on_postparse;
  48
  49 }
  50 }
  51
  52 static int surf_parse_models_setup_already_called = 0;
  53
  54 /** The current AS in the parsing */
  55 static simgrid::kernel::routing::AsImpl *current_routing = nullptr;
  56 static simgrid::kernel::routing::AsImpl *routing_get_current()
  57 {
  58   return current_routing;
  59 }
  60
  61 /** Module management function: creates all internal data structures */
  62 void sg_platf_init() {
  63 }
  64
  65 /** Module management function: frees all internal data structures */
  66 void sg_platf_exit() {
  67   simgrid::surf::on_link.disconnect_all_slots();
  68   simgrid::surf::on_cluster.disconnect_all_slots();
  69   simgrid::surf::on_postparse.disconnect_all_slots();
  70
  71   /* make sure that we will reinit the models while loading the platf once reinited */
  72   surf_parse_models_setup_already_called = 0;
  73   surf_parse_lex_destroy();
  74 }
  75
  76 /** @brief Add an host to the current AS */
  77 void sg_platf_new_host(sg_platf_host_cbarg_t host)
  78 {
  79   simgrid::kernel::routing::AsImpl* current_routing = routing_get_current();
  80
  81   simgrid::s4u::Host* h = new simgrid::s4u::Host(host->id);
  82   current_routing->attachHost(h);
  83
  84   if (host->coord && strcmp(host->coord, "")) {
  85     new simgrid::kernel::routing::vivaldi::Coords(h, host->coord);
  86   }
  87
  88   simgrid::surf::Cpu *cpu = surf_cpu_model_pm->createCpu( h, &host->speed_per_pstate, host->core_amount);
  89   if (host->state_trace)
  90     cpu->setStateTrace(host->state_trace);
  91   if (host->speed_trace)
  92     cpu->setSpeedTrace(host->speed_trace);
  93
  94   new simgrid::surf::HostImpl(h, mount_list);
  95   xbt_lib_set(storage_lib, host->id, ROUTING_STORAGE_HOST_LEVEL, static_cast<void*>(mount_list));
  96
  97   mount_list = nullptr;
  98
  99   if (host->properties) {
 100     xbt_dict_cursor_t cursor=nullptr;
 101     char *key,*data;
 102     xbt_dict_foreach(host->properties,cursor,key,data)
 103       h->setProperty(key,data);
 104     xbt_dict_free(&host->properties);
 105   }
 106
 107   if (host->pstate != 0)
 108     cpu->setPState(host->pstate);
 109
 110   simgrid::s4u::Host::onCreation(*h);
 111
 112   if (TRACE_is_enabled() && TRACE_needs_platform())
 113     sg_instr_new_host(*h);
 114 }
 115
 116 /** @brief Add a "router" to the network element list */
 117 void sg_platf_new_router(sg_platf_router_cbarg_t router)
 118 {
 119   using simgrid::kernel::routing::AsCluster;
 120   simgrid::kernel::routing::AsImpl* current_routing = routing_get_current();
 121
 122   if (current_routing->hierarchy_ == simgrid::kernel::routing::AsImpl::RoutingMode::unset)
 123     current_routing->hierarchy_ = simgrid::kernel::routing::AsImpl::RoutingMode::base;
 124   xbt_assert(nullptr == xbt_lib_get_or_null(as_router_lib, router->id, ROUTING_ASR_LEVEL),
 125              "Refusing to create a router named '%s': this name already describes a node.", router->id);
 126
 127   simgrid::kernel::routing::NetCard* netcard =
 128     new simgrid::kernel::routing::NetCardImpl(router->id, simgrid::kernel::routing::NetCard::Type::Router, current_routing);
 129   xbt_lib_set(as_router_lib, router->id, ROUTING_ASR_LEVEL, netcard);
 130   XBT_DEBUG("Router '%s' has the id %d", router->id, netcard->id());
 131
 132   if (router->coord && strcmp(router->coord, "")) {
 133     unsigned int cursor;
 134     char*str;
 135
 136     xbt_assert(COORD_ASR_LEVEL, "To use host coordinates, please add --cfg=network/coordinates:yes to your command line");
 137     /* Pre-parse the host coordinates */
 138     xbt_dynar_t ctn_str = xbt_str_split_str(router->coord, " ");
 139     xbt_assert(xbt_dynar_length(ctn_str)==3,"Coordinates of %s must have 3 dimensions", router->id);
 140     xbt_dynar_t ctn = xbt_dynar_new(sizeof(double),nullptr);
 141     xbt_dynar_foreach(ctn_str,cursor, str) {
 142       double val = xbt_str_parse_double(str, "Invalid coordinate: %s");
 143       xbt_dynar_push(ctn,&val);
 144     }
 145     xbt_dynar_free(&ctn_str);
 146     xbt_dynar_shrink(ctn, 0);
 147     xbt_lib_set(as_router_lib, router->id, COORD_ASR_LEVEL, (void *) ctn);
 148   }
 149
 150   auto cluster = dynamic_cast<AsCluster*>(current_routing);
 151   if(cluster != nullptr)
 152     cluster->router_ = static_cast<simgrid::kernel::routing::NetCard*>(xbt_lib_get_or_null(as_router_lib, router->id, ROUTING_ASR_LEVEL));
 153
 154   if (TRACE_is_enabled() && TRACE_needs_platform())
 155     sg_instr_new_router(router);
 156 }
 157
 158 void sg_platf_new_link(sg_platf_link_cbarg_t link){
 159   std::vector<char*> names;
 160
 161   if (link->policy == SURF_LINK_FULLDUPLEX) {
 162     names.push_back(bprintf("%s_UP", link->id));
 163     names.push_back(bprintf("%s_DOWN", link->id));
 164   } else {
 165     names.push_back(xbt_strdup(link->id));
 166   }
 167   for (auto link_name : names) {
 168     Link *l = surf_network_model->createLink(link_name, link->bandwidth, link->latency, link->policy, link->properties);
 169
 170     if (link->latency_trace)
 171       l->setLatencyTrace(link->latency_trace);
 172     if (link->bandwidth_trace)
 173       l->setBandwidthTrace(link->bandwidth_trace);
 174     if (link->state_trace)
 175       l->setStateTrace(link->state_trace);
 176
 177     xbt_free(link_name);
 178   }
 179
 180   simgrid::surf::on_link(link);
 181 }
 182
 183 void sg_platf_new_cluster(sg_platf_cluster_cbarg_t cluster)
 184 {
 185   using simgrid::kernel::routing::AsCluster;
 186   using simgrid::kernel::routing::AsClusterDragonfly;
 187   using simgrid::kernel::routing::AsClusterFatTree;
 188   using simgrid::kernel::routing::AsClusterTorus;
 189
 190   int rankId=0;
 191
 192   s_sg_platf_link_cbarg_t link;
 193
 194   // What an inventive way of initializing the AS that I have as ancestor :-(
 195   s_sg_platf_AS_cbarg_t AS;
 196   AS.id = cluster->id;
 197   switch (cluster->topology) {
 198   case SURF_CLUSTER_TORUS:
 199     AS.routing = A_surfxml_AS_routing_ClusterTorus;
 200     break;
 201   case SURF_CLUSTER_DRAGONFLY:
 202     AS.routing = A_surfxml_AS_routing_ClusterDragonfly;
 203     break;
 204   case SURF_CLUSTER_FAT_TREE:
 205     AS.routing = A_surfxml_AS_routing_ClusterFatTree;
 206     break;
 207   default:
 208     AS.routing = A_surfxml_AS_routing_Cluster;
 209     break;
 210   }
 211   sg_platf_new_AS_begin(&AS);
 212   simgrid::kernel::routing::AsCluster *current_as = static_cast<AsCluster*>(routing_get_current());
 213   current_as->parse_specific_arguments(cluster);
 214
 215   if(cluster->loopback_bw!=0 || cluster->loopback_lat!=0){
 216     current_as->linkCountPerNode_++;
 217     current_as->hasLoopback_ = 1;
 218   }
 219
 220   if(cluster->limiter_link!=0){
 221     current_as->linkCountPerNode_++;
 222     current_as->hasLimiter_ = 1;
 223   }
 224
 225   for (int i : *cluster->radicals) {
 226     char * host_id = bprintf("%s%d%s", cluster->prefix, i, cluster->suffix);
 227     char * link_id = bprintf("%s_link_%d", cluster->id, i);
 228
 229     XBT_DEBUG("<host\tid=\"%s\"\tpower=\"%f\">", host_id, cluster->speed);
 230
 231     s_sg_platf_host_cbarg_t host;
 232     memset(&host, 0, sizeof(host));
 233     host.id = host_id;
 234     if ((cluster->properties != nullptr) && (!xbt_dict_is_empty(cluster->properties))) {
 235       xbt_dict_cursor_t cursor=nullptr;
 236       char *key,*data;
 237       host.properties = xbt_dict_new();
 238
 239       xbt_dict_foreach(cluster->properties,cursor,key,data) {
 240         xbt_dict_set(host.properties, key, xbt_strdup(data),free);
 241       }
 242     }
 243
 244     host.speed_per_pstate.push_back(cluster->speed);
 245     host.pstate = 0;
 246     host.core_amount = cluster->core_amount;
 247     host.coord = "";
 248     sg_platf_new_host(&host);
 249     XBT_DEBUG("</host>");
 250
 251     XBT_DEBUG("<link\tid=\"%s\"\tbw=\"%f\"\tlat=\"%f\"/>", link_id, cluster->bw, cluster->lat);
 252
 253     s_surf_parsing_link_up_down_t info_lim;
 254     s_surf_parsing_link_up_down_t info_loop;
 255     // All links are saved in a matrix;
 256     // every row describes a single node; every node may have multiple links.
 257     // the first column may store a link from x to x if p_has_loopback is set
 258     // the second column may store a limiter link if p_has_limiter is set
 259     // other columns are to store one or more link for the node
 260
 261     //add a loopback link
 262     if(cluster->loopback_bw!=0 || cluster->loopback_lat!=0){
 263       char *tmp_link = bprintf("%s_loopback", link_id);
 264       XBT_DEBUG("<loopback\tid=\"%s\"\tbw=\"%f\"/>", tmp_link, cluster->loopback_bw);
 265
 266       memset(&link, 0, sizeof(link));
 267       link.id        = tmp_link;
 268       link.bandwidth = cluster->loopback_bw;
 269       link.latency   = cluster->loopback_lat;
 270       link.policy    = SURF_LINK_FATPIPE;
 271       sg_platf_new_link(&link);
 272       info_loop.linkUp = Link::byName(tmp_link);
 273       info_loop.linkDown = Link::byName(tmp_link);
 274       free(tmp_link);
 275
 276       auto as_cluster = static_cast<AsCluster*>(current_as);
 277       as_cluster->privateLinks_.insert({rankId*as_cluster->linkCountPerNode_, info_loop});
 278     }
 279
 280     //add a limiter link (shared link to account for maximal bandwidth of the node)
 281     if(cluster->limiter_link!=0){
 282       char *tmp_link = bprintf("%s_limiter", link_id);
 283       XBT_DEBUG("<limiter\tid=\"%s\"\tbw=\"%f\"/>", tmp_link, cluster->limiter_link);
 284
 285       memset(&link, 0, sizeof(link));
 286       link.id = tmp_link;
 287       link.bandwidth = cluster->limiter_link;
 288       link.latency = 0;
 289       link.policy = SURF_LINK_SHARED;
 290       sg_platf_new_link(&link);
 291       info_lim.linkUp = info_lim.linkDown = Link::byName(tmp_link);
 292       free(tmp_link);
 293       current_as->privateLinks_.insert(
 294           {rankId * current_as->linkCountPerNode_ + current_as->hasLoopback_ , info_lim});
 295     }
 296
 297     //call the cluster function that adds the others links
 298     if (cluster->topology == SURF_CLUSTER_FAT_TREE) {
 299       static_cast<AsClusterFatTree*>(current_as)->addProcessingNode(i);
 300     }
 301     else {
 302       current_as->create_links_for_node(cluster, i, rankId,
 303           rankId*current_as->linkCountPerNode_ + current_as->hasLoopback_ + current_as->hasLimiter_ );
 304     }
 305     xbt_free(link_id);
 306     xbt_free(host_id);
 307     rankId++;
 308   }
 309
 310   // Add a router. It is magically used thanks to the way in which surf_routing_cluster is written,
 311   // and it's very useful to connect clusters together
 312   XBT_DEBUG(" ");
 313   XBT_DEBUG("<router id=\"%s\"/>", cluster->router_id);
 314   char *newid = nullptr;
 315   s_sg_platf_router_cbarg_t router;
 316   memset(&router, 0, sizeof(router));
 317   router.id = cluster->router_id;
 318   if (!router.id || !strcmp(router.id, ""))
 319     router.id = newid = bprintf("%s%s_router%s", cluster->prefix, cluster->id, cluster->suffix);
 320   sg_platf_new_router(&router);
 321   current_as->router_ = (simgrid::kernel::routing::NetCard*) xbt_lib_get_or_null(as_router_lib, router.id, ROUTING_ASR_LEVEL);
 322   free(newid);
 323
 324   //Make the backbone
 325   if ((cluster->bb_bw != 0) || (cluster->bb_lat != 0)) {
 326
 327     memset(&link, 0, sizeof(link));
 328     link.id        = bprintf("%s_backbone", cluster->id);
 329     link.bandwidth = cluster->bb_bw;
 330     link.latency   = cluster->bb_lat;
 331     link.policy    = cluster->bb_sharing_policy;
 332
 333     XBT_DEBUG("<link\tid=\"%s\" bw=\"%f\" lat=\"%f\"/>", link.id, cluster->bb_bw, cluster->bb_lat);
 334     sg_platf_new_link(&link);
 335
 336     routing_cluster_add_backbone(Link::byName(link.id));
 337     free((char*)link.id);
 338   }
 339
 340   XBT_DEBUG("</AS>");
 341   sg_platf_new_AS_seal();
 342
 343   simgrid::surf::on_cluster(cluster);
 344   delete cluster->radicals;
 345 }
 346 void routing_cluster_add_backbone(simgrid::surf::Link* bb) {
 347   simgrid::kernel::routing::AsCluster *cluster = dynamic_cast<simgrid::kernel::routing::AsCluster*>(current_routing);
 348
 349   xbt_assert(cluster, "Only hosts from Cluster can get a backbone.");
 350   xbt_assert(nullptr == cluster->backbone_, "Cluster %s already has a backbone link!", cluster->name());
 351
 352   cluster->backbone_ = bb;
 353   XBT_DEBUG("Add a backbone to AS '%s'", current_routing->name());
 354 }
 355
 356 void sg_platf_new_cabinet(sg_platf_cabinet_cbarg_t cabinet)
 357 {
 358   for (int radical : *cabinet->radicals) {
 359     char *hostname = bprintf("%s%d%s", cabinet->prefix, radical, cabinet->suffix);
 360     s_sg_platf_host_cbarg_t host;
 361     memset(&host, 0, sizeof(host));
 362     host.pstate           = 0;
 363     host.core_amount      = 1;
 364     host.id               = hostname;
 365     host.speed_per_pstate.push_back(cabinet->speed);
 366     sg_platf_new_host(&host);
 367
 368     s_sg_platf_link_cbarg_t link;
 369     memset(&link, 0, sizeof(link));
 370     link.policy    = SURF_LINK_FULLDUPLEX;
 371     link.latency   = cabinet->lat;
 372     link.bandwidth = cabinet->bw;
 373     link.id        = bprintf("link_%s",hostname);
 374     sg_platf_new_link(&link);
 375     free((char*)link.id);
 376
 377     s_sg_platf_host_link_cbarg_t host_link;
 378     memset(&host_link, 0, sizeof(host_link));
 379     host_link.id        = hostname;
 380     host_link.link_up   = bprintf("link_%s_UP",hostname);
 381     host_link.link_down = bprintf("link_%s_DOWN",hostname);
 382     sg_platf_new_hostlink(&host_link);
 383     free((char*)host_link.link_up);
 384     free((char*)host_link.link_down);
 385
 386     free(hostname);
 387   }
 388   delete cabinet->radicals;
 389 }
 390
 391 void sg_platf_new_storage(sg_platf_storage_cbarg_t storage)
 392 {
 393   xbt_assert(!xbt_lib_get_or_null(storage_lib, storage->id,ROUTING_STORAGE_LEVEL),
 394                "Refusing to add a second storage named \"%s\"", storage->id);
 395
 396   void* stype = xbt_lib_get_or_null(storage_type_lib, storage->type_id,ROUTING_STORAGE_TYPE_LEVEL);
 397   xbt_assert(stype,"No storage type '%s'", storage->type_id);
 398
 399   XBT_DEBUG("ROUTING Create a storage name '%s' with type_id '%s' and content '%s'",
 400       storage->id,
 401       storage->type_id,
 402       storage->content);
 403
 404   xbt_lib_set(storage_lib, storage->id, ROUTING_STORAGE_LEVEL, (void *) xbt_strdup(storage->type_id));
 405
 406   // if storage content is not specified use the content of storage_type if any
 407   if(!strcmp(storage->content,"") && strcmp(((storage_type_t) stype)->content,"")){
 408     storage->content = ((storage_type_t) stype)->content;
 409     storage->content_type = ((storage_type_t) stype)->content_type;
 410     XBT_DEBUG("For disk '%s' content is empty, inherit the content (of type %s) from storage type '%s' ",
 411         storage->id,((storage_type_t) stype)->content_type,
 412         ((storage_type_t) stype)->type_id);
 413   }
 414
 415   XBT_DEBUG("SURF storage create resource\n\t\tid '%s'\n\t\ttype '%s' "
 416       "\n\t\tmodel '%s' \n\t\tcontent '%s'\n\t\tcontent_type '%s' "
 417       "\n\t\tproperties '%p''\n",
 418       storage->id,
 419       ((storage_type_t) stype)->model,
 420       ((storage_type_t) stype)->type_id,
 421       storage->content,
 422       storage->content_type,
 423     storage->properties);
 424
 425   surf_storage_model->createStorage(storage->id,
 426                                      ((storage_type_t) stype)->type_id,
 427                                      storage->content,
 428                                      storage->content_type,
 429                    storage->properties,
 430                                      storage->attach);
 431 }
 432 void sg_platf_new_storage_type(sg_platf_storage_type_cbarg_t storage_type){
 433
 434   xbt_assert(!xbt_lib_get_or_null(storage_type_lib, storage_type->id,ROUTING_STORAGE_TYPE_LEVEL),
 435                "Reading a storage type, processing unit \"%s\" already exists", storage_type->id);
 436
 437   storage_type_t stype = xbt_new0(s_storage_type_t, 1);
 438   stype->model = xbt_strdup(storage_type->model);
 439   stype->properties = storage_type->properties;
 440   stype->content = xbt_strdup(storage_type->content);
 441   stype->content_type = xbt_strdup(storage_type->content_type);
 442   stype->type_id = xbt_strdup(storage_type->id);
 443   stype->size = storage_type->size;
 444   stype->model_properties = storage_type->model_properties;
 445
 446   XBT_DEBUG("ROUTING Create a storage type id '%s' with model '%s', "
 447       "content '%s', and content_type '%s'",
 448       stype->type_id,
 449       stype->model,
 450       storage_type->content,
 451       storage_type->content_type);
 452
 453   xbt_lib_set(storage_type_lib,
 454       stype->type_id,
 455       ROUTING_STORAGE_TYPE_LEVEL,
 456       (void *) stype);
 457 }
 458
 459 static void mount_free(void *p)
 460 {
 461   mount_t mnt = (mount_t) p;
 462   xbt_free(mnt->name);
 463 }
 464
 465 void sg_platf_new_mount(sg_platf_mount_cbarg_t mount){
 466   xbt_assert(xbt_lib_get_or_null(storage_lib, mount->storageId, ROUTING_STORAGE_LEVEL),
 467       "Cannot mount non-existent disk \"%s\"", mount->storageId);
 468
 469   XBT_DEBUG("ROUTING Mount '%s' on '%s'",mount->storageId, mount->name);
 470
 471   s_mount_t mnt;
 472   mnt.storage = surf_storage_resource_priv(surf_storage_resource_by_name(mount->storageId));
 473   mnt.name = xbt_strdup(mount->name);
 474
 475   if(!mount_list){
 476     XBT_DEBUG("Create a Mount list for %s",A_surfxml_host_id);
 477     mount_list = xbt_dynar_new(sizeof(s_mount_t), mount_free);
 478   }
 479   xbt_dynar_push(mount_list, &mnt);
 480 }
 481
 482 void sg_platf_new_route(sg_platf_route_cbarg_t route)
 483 {
 484   routing_get_current()->addRoute(route);
 485 }
 486
 487 void sg_platf_new_bypassRoute(sg_platf_route_cbarg_t bypassRoute)
 488 {
 489   routing_get_current()->addBypassRoute(bypassRoute);
 490 }
 491
 492 void sg_platf_new_process(sg_platf_process_cbarg_t process)
 493 {
 494   sg_host_t host = sg_host_by_name(process->host);
 495   if (!host) {
 496     // The requested host does not exist. Do a nice message to the user
 497     char *tmp = bprintf("Cannot create process '%s': host '%s' does not exist\nExisting hosts: '",process->function, process->host);
 498     xbt_strbuff_t msg = xbt_strbuff_new_from(tmp);
 499     free(tmp);
 500     xbt_dynar_t all_hosts = xbt_dynar_sort_strings(sg_hosts_as_dynar());
 501     simgrid::s4u::Host* host;
 502     unsigned int cursor;
 503     xbt_dynar_foreach(all_hosts,cursor, host) {
 504       xbt_strbuff_append(msg,host->name().c_str());
 505       xbt_strbuff_append(msg,"', '");
 506       if (msg->used > 1024) {
 507         msg->data[msg->used-3]='\0';
 508         msg->used -= 3;
 509
 510         xbt_strbuff_append(msg," ...(list truncated)......");// That will be shortened by 3 chars when existing the loop
 511         break;
 512       }
 513     }
 514     msg->data[msg->used-3]='\0';
 515     xbt_die("%s", msg->data);
 516   }
 517   simgrid::simix::ActorCodeFactory& factory = SIMIX_get_actor_code_factory(process->function);
 518   xbt_assert(factory, "Function '%s' unknown", process->function);
 519
 520   double start_time = process->start_time;
 521   double kill_time  = process->kill_time;
 522   int auto_restart = process->on_failure == SURF_PROCESS_ON_FAILURE_DIE ? 0 : 1;
 523
 524   std::vector<std::string> args(process->argv, process->argv + process->argc);
 525   std::function<void()> code = factory(std::move(args));
 526
 527   smx_process_arg_t arg = nullptr;
 528   smx_actor_t process_created = nullptr;
 529
 530   arg = new simgrid::simix::ProcessArg();
 531   arg->name = std::string(process->argv[0]);
 532   arg->code = code;
 533   arg->data = nullptr;
 534   arg->host = host;
 535   arg->kill_time = kill_time;
 536   arg->properties = current_property_set;
 537
 538   sg_host_simix(host)->boot_processes.push_back(arg);
 539
 540   if (start_time > SIMIX_get_clock()) {
 541
 542     arg = new simgrid::simix::ProcessArg();
 543     arg->name = std::string(process->argv[0]);
 544     arg->code = std::move(code);
 545     arg->data = nullptr;
 546     arg->host = host;
 547     arg->kill_time = kill_time;
 548     arg->properties = current_property_set;
 549
 550     XBT_DEBUG("Process %s@%s will be started at time %f",
 551       arg->name.c_str(), arg->host->name().c_str(), start_time);
 552     SIMIX_timer_set(start_time, [=]() {
 553       simix_global->create_process_function(
 554                                             arg->name.c_str(),
 555                                             std::move(arg->code),
 556                                             arg->data,
 557                                             arg->host,
 558                                             arg->kill_time,
 559                                             arg->properties,
 560                                             arg->auto_restart,
 561                                             nullptr);
 562       delete arg;
 563     });
 564   } else {                      // start_time <= SIMIX_get_clock()
 565     XBT_DEBUG("Starting Process %s(%s) right now",
 566       arg->name.c_str(), sg_host_get_name(host));
 567
 568     process_created = simix_global->create_process_function(
 569         arg->name.c_str(), std::move(code), nullptr,
 570         host, kill_time,
 571         current_property_set, auto_restart, nullptr);
 572
 573     /* verify if process has been created (won't be the case if the host is currently dead, but that's fine) */
 574     if (!process_created) {
 575       return;
 576     }
 577   }
 578   current_property_set = nullptr;
 579 }
 580
 581 void sg_platf_new_peer(sg_platf_peer_cbarg_t peer)
 582 {
 583   using simgrid::kernel::routing::NetCard;
 584   using simgrid::kernel::routing::AsCluster;
 585
 586   char *host_id = bprintf("peer_%s", peer->id);
 587   char *router_id = bprintf("router_%s", peer->id);
 588
 589   XBT_DEBUG(" ");
 590
 591   XBT_DEBUG("<AS id=\"%s\"\trouting=\"Cluster\">", peer->id);
 592   s_sg_platf_AS_cbarg_t AS;
 593   AS.id      = peer->id;
 594   AS.routing = A_surfxml_AS_routing_Cluster;
 595   sg_platf_new_AS_begin(&AS);
 596
 597   XBT_DEBUG("<host\tid=\"%s\"\tpower=\"%f\"/>", host_id, peer->speed);
 598   s_sg_platf_host_cbarg_t host;
 599   memset(&host, 0, sizeof(host));
 600   host.id = host_id;
 601
 602   host.speed_per_pstate.push_back(peer->speed);
 603   host.pstate = 0;
 604   host.speed_trace = peer->availability_trace;
 605   host.state_trace = peer->state_trace;
 606   host.core_amount = 1;
 607   sg_platf_new_host(&host);
 608
 609   s_sg_platf_link_cbarg_t link;
 610   memset(&link, 0, sizeof(link));
 611   link.policy  = SURF_LINK_SHARED;
 612   link.latency = peer->lat;
 613
 614   char* link_up = bprintf("link_%s_UP",peer->id);
 615   XBT_DEBUG("<link\tid=\"%s\"\tbw=\"%f\"\tlat=\"%f\"/>", link_up, peer->bw_out, peer->lat);
 616   link.id = link_up;
 617   link.bandwidth = peer->bw_out;
 618   sg_platf_new_link(&link);
 619
 620   char* link_down = bprintf("link_%s_DOWN",peer->id);
 621   XBT_DEBUG("<link\tid=\"%s\"\tbw=\"%f\"\tlat=\"%f\"/>", link_down, peer->bw_in, peer->lat);
 622   link.id = link_down;
 623   link.bandwidth = peer->bw_in;
 624   sg_platf_new_link(&link);
 625
 626   XBT_DEBUG("<host_link\tid=\"%s\"\tup=\"%s\"\tdown=\"%s\" />", host_id,link_up,link_down);
 627   s_sg_platf_host_link_cbarg_t host_link;
 628   memset(&host_link, 0, sizeof(host_link));
 629   host_link.id        = host_id;
 630   host_link.link_up   = link_up;
 631   host_link.link_down = link_down;
 632   sg_platf_new_hostlink(&host_link);
 633   free(link_up);
 634   free(link_down);
 635
 636   XBT_DEBUG("<router id=\"%s\"/>", router_id);
 637   s_sg_platf_router_cbarg_t router;
 638   memset(&router, 0, sizeof(router));
 639   router.id = router_id;
 640   router.coord = peer->coord;
 641   sg_platf_new_router(&router);
 642
 643   XBT_DEBUG("</AS>");
 644   sg_platf_new_AS_seal();
 645   XBT_DEBUG(" ");
 646
 647   free(router_id);
 648   free(host_id);
 649 }
 650
 651 void sg_platf_begin() { /* Do nothing: just for symmetry of user code */ }
 652
 653 void sg_platf_end() {
 654   simgrid::surf::on_postparse();
 655 }
 656
 657 /* Pick the right models for CPU, net and host, and call their model_init_preparse */
 658 static void surf_config_models_setup()
 659 {
 660   const char* host_model_name    = xbt_cfg_get_string("host/model");
 661   const char* vm_model_name      = xbt_cfg_get_string("vm/model");
 662   const char* network_model_name = xbt_cfg_get_string("network/model");
 663   const char* cpu_model_name     = xbt_cfg_get_string("cpu/model");
 664   const char* storage_model_name = xbt_cfg_get_string("storage/model");
 665
 666   /* The compound host model is needed when using non-default net/cpu models */
 667   if ((!xbt_cfg_is_default_value("network/model") || !xbt_cfg_is_default_value("cpu/model")) &&
 668       xbt_cfg_is_default_value("host/model")) {
 669     host_model_name = "compound";
 670     xbt_cfg_set_string("host/model", host_model_name);
 671   }
 672
 673   XBT_DEBUG("host model: %s", host_model_name);
 674   if (!strcmp(host_model_name, "compound")) {
 675     xbt_assert(cpu_model_name, "Set a cpu model to use with the 'compound' host model");
 676     xbt_assert(network_model_name, "Set a network model to use with the 'compound' host model");
 677
 678     int cpu_id = find_model_description(surf_cpu_model_description, cpu_model_name);
 679     surf_cpu_model_description[cpu_id].model_init_preparse();
 680
 681     int network_id = find_model_description(surf_network_model_description, network_model_name);
 682     surf_network_model_description[network_id].model_init_preparse();
 683   }
 684
 685   XBT_DEBUG("Call host_model_init");
 686   int host_id = find_model_description(surf_host_model_description, host_model_name);
 687   surf_host_model_description[host_id].model_init_preparse();
 688
 689   XBT_DEBUG("Call vm_model_init");
 690   int vm_id = find_model_description(surf_vm_model_description, vm_model_name);
 691   surf_vm_model_description[vm_id].model_init_preparse();
 692
 693   XBT_DEBUG("Call storage_model_init");
 694   int storage_id = find_model_description(surf_storage_model_description, storage_model_name);
 695   surf_storage_model_description[storage_id].model_init_preparse();
 696 }
 697
 698 /**
 699  * \brief Add an AS to the platform
 700  *
 701  * Add a new autonomous system to the platform. Any elements (such as host,
 702  * router or sub-AS) added after this call and before the corresponding call
 703  * to sg_platf_new_AS_seal() will be added to this AS.
 704  *
 705  * Once this function was called, the configuration concerning the used
 706  * models cannot be changed anymore.
 707  *
 708  * @param AS the parameters defining the AS to build.
 709  */
 710 simgrid::s4u::As * sg_platf_new_AS_begin(sg_platf_AS_cbarg_t AS)
 711 {
 712   if (!surf_parse_models_setup_already_called) {
 713     /* Initialize the surf models. That must be done after we got all config, and before we need the models.
 714      * That is, after the last <config> tag, if any, and before the first of cluster|peer|AS|trace|trace_connect
 715      *
 716      * I'm not sure for <trace> and <trace_connect>, there may be a bug here
 717      * (FIXME: check it out by creating a file beginning with one of these tags)
 718      * but cluster and peer create ASes internally, so putting the code in there is ok.
 719      */
 720     surf_parse_models_setup_already_called = 1;
 721     surf_config_models_setup();
 722   }
 723
 724   _sg_cfg_init_status = 2; /* HACK: direct access to the global controlling the level of configuration to prevent
 725                             * any further config now that we created some real content */
 726
 727
 728   /* search the routing model */
 729   simgrid::kernel::routing::AsImpl *new_as = nullptr;
 730   switch(AS->routing){
 731     case A_surfxml_AS_routing_Cluster:
 732       new_as = new simgrid::kernel::routing::AsCluster(current_routing, AS->id);
 733       break;
 734     case A_surfxml_AS_routing_ClusterDragonfly:
 735       new_as = new simgrid::kernel::routing::AsClusterDragonfly(current_routing, AS->id);
 736       break;
 737     case A_surfxml_AS_routing_ClusterTorus:
 738       new_as = new simgrid::kernel::routing::AsClusterTorus(current_routing, AS->id);
 739       break;
 740     case A_surfxml_AS_routing_ClusterFatTree:
 741       new_as = new simgrid::kernel::routing::AsClusterFatTree(current_routing, AS->id);
 742       break;
 743     case A_surfxml_AS_routing_Dijkstra:
 744       new_as = new simgrid::kernel::routing::AsDijkstra(current_routing, AS->id, 0);
 745       break;
 746     case A_surfxml_AS_routing_DijkstraCache:
 747       new_as = new simgrid::kernel::routing::AsDijkstra(current_routing, AS->id, 1);
 748       break;
 749     case A_surfxml_AS_routing_Floyd:
 750       new_as = new simgrid::kernel::routing::AsFloyd(current_routing, AS->id);
 751       break;
 752     case A_surfxml_AS_routing_Full:
 753       new_as = new simgrid::kernel::routing::AsFull(current_routing, AS->id);
 754       break;
 755     case A_surfxml_AS_routing_None:
 756       new_as = new simgrid::kernel::routing::AsNone(current_routing, AS->id);
 757       break;
 758     case A_surfxml_AS_routing_Vivaldi:
 759       new_as = new simgrid::kernel::routing::AsVivaldi(current_routing, AS->id);
 760       break;
 761     default:
 762       xbt_die("Not a valid model!");
 763       break;
 764   }
 765
 766
 767   if (current_routing == nullptr && routing_platf->root_ == nullptr) { /* it is the first one */
 768     routing_platf->root_ = new_as;
 769
 770   } else if (current_routing != nullptr && routing_platf->root_ != nullptr) {
 771     /* set the father behavior */
 772     if (current_routing->hierarchy_ == simgrid::kernel::routing::AsImpl::RoutingMode::unset)
 773       current_routing->hierarchy_ = simgrid::kernel::routing::AsImpl::RoutingMode::recursive;
 774     /* add to the sons dictionary */
 775     xbt_dict_set(current_routing->children(), AS->id, (void *) new_as, nullptr);
 776
 777   } else {
 778     THROWF(arg_error, 0, "All defined components must belong to a AS");
 779   }
 780
 781   /* set the new current component of the tree */
 782   current_routing = new_as;
 783
 784   simgrid::kernel::routing::asCreatedCallbacks(new_as);
 785   if (TRACE_is_enabled())
 786     sg_instr_AS_begin(AS);
 787
 788   return new_as;
 789 }
 790
 791 /**
 792  * \brief Specify that the description of the current AS is finished
 793  *
 794  * Once you've declared all the content of your AS, you have to seal
 795  * it with this call. Your AS is not usable until you call this function.
 796  */
 797 void sg_platf_new_AS_seal()
 798 {
 799   xbt_assert(current_routing, "Cannot seal the current AS: none under construction");
 800   current_routing->seal();
 801   current_routing = static_cast<simgrid::kernel::routing::AsImpl*>(current_routing->father());
 802
 803   if (TRACE_is_enabled())
 804     sg_instr_AS_end();
 805 }
 806
 807 /** @brief Add a link connecting an host to the rest of its AS (which must be cluster or vivaldi) */
 808 void sg_platf_new_hostlink(sg_platf_host_link_cbarg_t hostlink)
 809 {
 810   simgrid::kernel::routing::NetCard *netcard = sg_host_by_name(hostlink->id)->pimpl_netcard;
 811   xbt_assert(netcard, "Host '%s' not found!", hostlink->id);
 812   xbt_assert(dynamic_cast<simgrid::kernel::routing::AsCluster*>(current_routing),
 813       "Only hosts from Cluster and Vivaldi ASes can get an host_link.");
 814
 815   s_surf_parsing_link_up_down_t link_up_down;
 816   link_up_down.linkUp = Link::byName(hostlink->link_up);
 817   link_up_down.linkDown = Link::byName(hostlink->link_down);
 818
 819   xbt_assert(link_up_down.linkUp, "Link '%s' not found!",hostlink->link_up);
 820   xbt_assert(link_up_down.linkDown, "Link '%s' not found!",hostlink->link_down);
 821
 822   auto as_cluster = static_cast<simgrid::kernel::routing::AsCluster*>(current_routing);
 823
 824   if (as_cluster->privateLinks_.find(netcard->id()) != as_cluster->privateLinks_.end())
 825     surf_parse_error("Host_link for '%s' is already defined!",hostlink->id);
 826
 827   XBT_DEBUG("Push Host_link for host '%s' to position %d", netcard->name().c_str(), netcard->id());
 828   as_cluster->privateLinks_.insert({netcard->id(), link_up_down});
 829 }