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/AsImpl.hpp"
  29 #include "src/kernel/routing/AsCluster.hpp"
  30 #include "src/kernel/routing/AsClusterTorus.hpp"
  31 #include "src/kernel/routing/AsClusterFatTree.hpp"
  32 #include "src/kernel/routing/AsClusterDragonfly.hpp"
  33 #include "src/kernel/routing/AsDijkstra.hpp"
  34 #include "src/kernel/routing/AsFloyd.hpp"
  35 #include "src/kernel/routing/AsFull.hpp"
  36 #include "src/kernel/routing/AsNone.hpp"
  37 #include "src/kernel/routing/AsVivaldi.hpp"
  38
  39 XBT_LOG_EXTERNAL_DEFAULT_CATEGORY(surf_parse);
  40
  41 XBT_PRIVATE xbt_dynar_t mount_list = nullptr;
  42
  43 namespace simgrid {
  44 namespace surf {
  45
  46 simgrid::xbt::signal<void(sg_platf_link_cbarg_t)> on_link;
  47 simgrid::xbt::signal<void(sg_platf_cluster_cbarg_t)> on_cluster;
  48 simgrid::xbt::signal<void(void)> on_postparse;
  49
  50 }
  51 }
  52
  53 static int surf_parse_models_setup_already_called = 0;
  54
  55 /** The current AS in the parsing */
  56 static simgrid::kernel::routing::AsImpl *current_routing = nullptr;
  57 static simgrid::kernel::routing::AsImpl *routing_get_current()
  58 {
  59   return current_routing;
  60 }
  61
  62 /** Module management function: creates all internal data structures */
  63 void sg_platf_init() {
  64 }
  65
  66 /** Module management function: frees all internal data structures */
  67 void sg_platf_exit() {
  68   simgrid::surf::on_link.disconnect_all_slots();
  69   simgrid::surf::on_cluster.disconnect_all_slots();
  70   simgrid::surf::on_postparse.disconnect_all_slots();
  71
  72   /* make sure that we will reinit the models while loading the platf once reinited */
  73   surf_parse_models_setup_already_called = 0;
  74   surf_parse_lex_destroy();
  75 }
  76
  77 /** @brief Add an host to the current AS */
  78 void sg_platf_new_host(sg_platf_host_cbarg_t args)
  79 {
  80   simgrid::s4u::Host* host = routing_get_current()->createHost(args->id, &args->speed_per_pstate, args->core_amount);
  81
  82   new simgrid::surf::HostImpl(host, mount_list);
  83   xbt_lib_set(storage_lib, args->id, ROUTING_STORAGE_HOST_LEVEL, static_cast<void*>(mount_list));
  84   mount_list = nullptr;
  85
  86   if (args->properties) {
  87     xbt_dict_cursor_t cursor=nullptr;
  88     char *key,*data;
  89     xbt_dict_foreach (args->properties, cursor, key, data)
  90       host->setProperty(key, data);
  91     xbt_dict_free(&args->properties);
  92   }
  93
  94   /* Change from the defaults */
  95   if (args->state_trace)
  96     host->pimpl_cpu->setStateTrace(args->state_trace);
  97   if (args->speed_trace)
  98     host->pimpl_cpu->setSpeedTrace(args->speed_trace);
  99   if (args->pstate != 0)
 100     host->pimpl_cpu->setPState(args->pstate);
 101   if (args->coord && strcmp(args->coord, ""))
 102     new simgrid::kernel::routing::vivaldi::Coords(host, args->coord);
 103
 104   simgrid::s4u::Host::onCreation(*host);
 105
 106   if (TRACE_is_enabled() && TRACE_needs_platform())
 107     sg_instr_new_host(*host);
 108 }
 109
 110 /** @brief Add a "router" to the network element list */
 111 void sg_platf_new_router(sg_platf_router_cbarg_t router)
 112 {
 113   using simgrid::kernel::routing::AsCluster;
 114   simgrid::kernel::routing::AsImpl* current_routing = routing_get_current();
 115
 116   if (current_routing->hierarchy_ == simgrid::kernel::routing::AsImpl::RoutingMode::unset)
 117     current_routing->hierarchy_ = simgrid::kernel::routing::AsImpl::RoutingMode::base;
 118   xbt_assert(nullptr == xbt_lib_get_or_null(as_router_lib, router->id, ROUTING_ASR_LEVEL),
 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_lib_set(as_router_lib, router->id, ROUTING_ASR_LEVEL, netcard);
 124   XBT_DEBUG("Router '%s' has the id %d", router->id, netcard->id());
 125
 126   if (router->coord && strcmp(router->coord, "")) {
 127     unsigned int cursor;
 128     char*str;
 129
 130     xbt_assert(COORD_ASR_LEVEL, "To use host coordinates, please add --cfg=network/coordinates:yes to your command line");
 131     /* Pre-parse the host coordinates */
 132     xbt_dynar_t ctn_str = xbt_str_split_str(router->coord, " ");
 133     xbt_assert(xbt_dynar_length(ctn_str)==3,"Coordinates of %s must have 3 dimensions", router->id);
 134     xbt_dynar_t ctn = xbt_dynar_new(sizeof(double),nullptr);
 135     xbt_dynar_foreach(ctn_str,cursor, str) {
 136       double val = xbt_str_parse_double(str, "Invalid coordinate: %s");
 137       xbt_dynar_push(ctn,&val);
 138     }
 139     xbt_dynar_free(&ctn_str);
 140     xbt_dynar_shrink(ctn, 0);
 141     xbt_lib_set(as_router_lib, router->id, COORD_ASR_LEVEL, (void *) ctn);
 142   }
 143
 144   auto cluster = dynamic_cast<AsCluster*>(current_routing);
 145   if(cluster != nullptr)
 146     cluster->router_ = static_cast<simgrid::kernel::routing::NetCard*>(xbt_lib_get_or_null(as_router_lib, router->id, ROUTING_ASR_LEVEL));
 147
 148   if (TRACE_is_enabled() && TRACE_needs_platform())
 149     sg_instr_new_router(router);
 150 }
 151
 152 void sg_platf_new_link(sg_platf_link_cbarg_t link){
 153   std::vector<char*> names;
 154
 155   if (link->policy == SURF_LINK_FULLDUPLEX) {
 156     names.push_back(bprintf("%s_UP", link->id));
 157     names.push_back(bprintf("%s_DOWN", link->id));
 158   } else {
 159     names.push_back(xbt_strdup(link->id));
 160   }
 161   for (auto link_name : names) {
 162     Link* l = surf_network_model->createLink(link_name, link->bandwidth, link->latency, link->policy);
 163
 164     if (link->properties) {
 165       xbt_dict_cursor_t cursor = nullptr;
 166       char *key, *data;
 167       xbt_dict_foreach (link->properties, cursor, key, data)
 168         l->setProperty(key, data);
 169       xbt_dict_free(&link->properties);
 170     }
 171
 172     if (link->latency_trace)
 173       l->setLatencyTrace(link->latency_trace);
 174     if (link->bandwidth_trace)
 175       l->setBandwidthTrace(link->bandwidth_trace);
 176     if (link->state_trace)
 177       l->setStateTrace(link->state_trace);
 178
 179     xbt_free(link_name);
 180   }
 181
 182   simgrid::surf::on_link(link);
 183 }
 184
 185 void sg_platf_new_cluster(sg_platf_cluster_cbarg_t cluster)
 186 {
 187   using simgrid::kernel::routing::AsCluster;
 188   using simgrid::kernel::routing::AsClusterDragonfly;
 189   using simgrid::kernel::routing::AsClusterFatTree;
 190   using simgrid::kernel::routing::AsClusterTorus;
 191
 192   int rankId=0;
 193
 194   s_sg_platf_link_cbarg_t link;
 195
 196   // What an inventive way of initializing the AS that I have as ancestor :-(
 197   s_sg_platf_AS_cbarg_t AS;
 198   AS.id = cluster->id;
 199   switch (cluster->topology) {
 200   case SURF_CLUSTER_TORUS:
 201     AS.routing = A_surfxml_AS_routing_ClusterTorus;
 202     break;
 203   case SURF_CLUSTER_DRAGONFLY:
 204     AS.routing = A_surfxml_AS_routing_ClusterDragonfly;
 205     break;
 206   case SURF_CLUSTER_FAT_TREE:
 207     AS.routing = A_surfxml_AS_routing_ClusterFatTree;
 208     break;
 209   default:
 210     AS.routing = A_surfxml_AS_routing_Cluster;
 211     break;
 212   }
 213   sg_platf_new_AS_begin(&AS);
 214   simgrid::kernel::routing::AsCluster *current_as = static_cast<AsCluster*>(routing_get_current());
 215   current_as->parse_specific_arguments(cluster);
 216
 217   if(cluster->loopback_bw!=0 || cluster->loopback_lat!=0){
 218     current_as->linkCountPerNode_++;
 219     current_as->hasLoopback_ = 1;
 220   }
 221
 222   if(cluster->limiter_link!=0){
 223     current_as->linkCountPerNode_++;
 224     current_as->hasLimiter_ = 1;
 225   }
 226
 227   for (int i : *cluster->radicals) {
 228     char * host_id = bprintf("%s%d%s", cluster->prefix, i, cluster->suffix);
 229     char * link_id = bprintf("%s_link_%d", cluster->id, i);
 230
 231     XBT_DEBUG("<host\tid=\"%s\"\tpower=\"%f\">", host_id, cluster->speed);
 232
 233     s_sg_platf_host_cbarg_t host;
 234     memset(&host, 0, sizeof(host));
 235     host.id = host_id;
 236     if ((cluster->properties != nullptr) && (!xbt_dict_is_empty(cluster->properties))) {
 237       xbt_dict_cursor_t cursor=nullptr;
 238       char *key,*data;
 239       host.properties = xbt_dict_new_homogeneous(free);
 240
 241       xbt_dict_foreach(cluster->properties,cursor,key,data) {
 242         xbt_dict_set(host.properties, key, xbt_strdup(data), nullptr);
 243       }
 244     }
 245
 246     host.speed_per_pstate.push_back(cluster->speed);
 247     host.pstate = 0;
 248     host.core_amount = cluster->core_amount;
 249     host.coord = "";
 250     sg_platf_new_host(&host);
 251     XBT_DEBUG("</host>");
 252
 253     XBT_DEBUG("<link\tid=\"%s\"\tbw=\"%f\"\tlat=\"%f\"/>", link_id, cluster->bw, cluster->lat);
 254
 255     s_surf_parsing_link_up_down_t info_lim;
 256     s_surf_parsing_link_up_down_t info_loop;
 257     // All links are saved in a matrix;
 258     // every row describes a single node; every node may have multiple links.
 259     // the first column may store a link from x to x if p_has_loopback is set
 260     // the second column may store a limiter link if p_has_limiter is set
 261     // other columns are to store one or more link for the node
 262
 263     //add a loopback link
 264     if(cluster->loopback_bw!=0 || cluster->loopback_lat!=0){
 265       char *tmp_link = bprintf("%s_loopback", link_id);
 266       XBT_DEBUG("<loopback\tid=\"%s\"\tbw=\"%f\"/>", tmp_link, cluster->loopback_bw);
 267
 268       memset(&link, 0, sizeof(link));
 269       link.id        = tmp_link;
 270       link.bandwidth = cluster->loopback_bw;
 271       link.latency   = cluster->loopback_lat;
 272       link.policy    = SURF_LINK_FATPIPE;
 273       sg_platf_new_link(&link);
 274       info_loop.linkUp = Link::byName(tmp_link);
 275       info_loop.linkDown = Link::byName(tmp_link);
 276       free(tmp_link);
 277
 278       auto as_cluster = static_cast<AsCluster*>(current_as);
 279       as_cluster->privateLinks_.insert({rankId*as_cluster->linkCountPerNode_, info_loop});
 280     }
 281
 282     //add a limiter link (shared link to account for maximal bandwidth of the node)
 283     if(cluster->limiter_link!=0){
 284       char *tmp_link = bprintf("%s_limiter", link_id);
 285       XBT_DEBUG("<limiter\tid=\"%s\"\tbw=\"%f\"/>", tmp_link, cluster->limiter_link);
 286
 287       memset(&link, 0, sizeof(link));
 288       link.id = tmp_link;
 289       link.bandwidth = cluster->limiter_link;
 290       link.latency = 0;
 291       link.policy = SURF_LINK_SHARED;
 292       sg_platf_new_link(&link);
 293       info_lim.linkUp = info_lim.linkDown = Link::byName(tmp_link);
 294       free(tmp_link);
 295       current_as->privateLinks_.insert(
 296           {rankId * current_as->linkCountPerNode_ + current_as->hasLoopback_ , info_lim});
 297     }
 298
 299     //call the cluster function that adds the others links
 300     if (cluster->topology == SURF_CLUSTER_FAT_TREE) {
 301       static_cast<AsClusterFatTree*>(current_as)->addProcessingNode(i);
 302     }
 303     else {
 304       current_as->create_links_for_node(cluster, i, rankId,
 305           rankId*current_as->linkCountPerNode_ + current_as->hasLoopback_ + current_as->hasLimiter_ );
 306     }
 307     xbt_free(link_id);
 308     xbt_free(host_id);
 309     rankId++;
 310   }
 311
 312   // Add a router. It is magically used thanks to the way in which surf_routing_cluster is written,
 313   // and it's very useful to connect clusters together
 314   XBT_DEBUG(" ");
 315   XBT_DEBUG("<router id=\"%s\"/>", cluster->router_id);
 316   char *newid = nullptr;
 317   s_sg_platf_router_cbarg_t router;
 318   memset(&router, 0, sizeof(router));
 319   router.id = cluster->router_id;
 320   if (!router.id || !strcmp(router.id, ""))
 321     router.id = newid = bprintf("%s%s_router%s", cluster->prefix, cluster->id, cluster->suffix);
 322   sg_platf_new_router(&router);
 323   current_as->router_ = (simgrid::kernel::routing::NetCard*) xbt_lib_get_or_null(as_router_lib, router.id, ROUTING_ASR_LEVEL);
 324   free(newid);
 325
 326   //Make the backbone
 327   if ((cluster->bb_bw != 0) || (cluster->bb_lat != 0)) {
 328
 329     memset(&link, 0, sizeof(link));
 330     link.id        = bprintf("%s_backbone", cluster->id);
 331     link.bandwidth = cluster->bb_bw;
 332     link.latency   = cluster->bb_lat;
 333     link.policy    = cluster->bb_sharing_policy;
 334
 335     XBT_DEBUG("<link\tid=\"%s\" bw=\"%f\" lat=\"%f\"/>", link.id, cluster->bb_bw, cluster->bb_lat);
 336     sg_platf_new_link(&link);
 337
 338     routing_cluster_add_backbone(Link::byName(link.id));
 339     free((char*)link.id);
 340   }
 341
 342   XBT_DEBUG("</AS>");
 343   sg_platf_new_AS_seal();
 344
 345   simgrid::surf::on_cluster(cluster);
 346   delete cluster->radicals;
 347 }
 348 void routing_cluster_add_backbone(simgrid::surf::Link* bb) {
 349   simgrid::kernel::routing::AsCluster *cluster = dynamic_cast<simgrid::kernel::routing::AsCluster*>(current_routing);
 350
 351   xbt_assert(cluster, "Only hosts from Cluster can get a backbone.");
 352   xbt_assert(nullptr == cluster->backbone_, "Cluster %s already has a backbone link!", cluster->name());
 353
 354   cluster->backbone_ = bb;
 355   XBT_DEBUG("Add a backbone to AS '%s'", current_routing->name());
 356 }
 357
 358 void sg_platf_new_cabinet(sg_platf_cabinet_cbarg_t cabinet)
 359 {
 360   for (int radical : *cabinet->radicals) {
 361     char *hostname = bprintf("%s%d%s", cabinet->prefix, radical, cabinet->suffix);
 362     s_sg_platf_host_cbarg_t host;
 363     memset(&host, 0, sizeof(host));
 364     host.pstate           = 0;
 365     host.core_amount      = 1;
 366     host.id               = hostname;
 367     host.speed_per_pstate.push_back(cabinet->speed);
 368     sg_platf_new_host(&host);
 369
 370     s_sg_platf_link_cbarg_t link;
 371     memset(&link, 0, sizeof(link));
 372     link.policy    = SURF_LINK_FULLDUPLEX;
 373     link.latency   = cabinet->lat;
 374     link.bandwidth = cabinet->bw;
 375     link.id        = bprintf("link_%s",hostname);
 376     sg_platf_new_link(&link);
 377     free((char*)link.id);
 378
 379     s_sg_platf_host_link_cbarg_t host_link;
 380     memset(&host_link, 0, sizeof(host_link));
 381     host_link.id        = hostname;
 382     host_link.link_up   = bprintf("link_%s_UP",hostname);
 383     host_link.link_down = bprintf("link_%s_DOWN",hostname);
 384     sg_platf_new_hostlink(&host_link);
 385     free((char*)host_link.link_up);
 386     free((char*)host_link.link_down);
 387
 388     free(hostname);
 389   }
 390   delete cabinet->radicals;
 391 }
 392
 393 void sg_platf_new_storage(sg_platf_storage_cbarg_t storage)
 394 {
 395   xbt_assert(!xbt_lib_get_or_null(storage_lib, storage->id,ROUTING_STORAGE_LEVEL),
 396                "Refusing to add a second storage named \"%s\"", storage->id);
 397
 398   void* stype = xbt_lib_get_or_null(storage_type_lib, storage->type_id,ROUTING_STORAGE_TYPE_LEVEL);
 399   xbt_assert(stype,"No storage type '%s'", storage->type_id);
 400
 401   XBT_DEBUG("ROUTING Create a storage name '%s' with type_id '%s' and content '%s'",
 402       storage->id,
 403       storage->type_id,
 404       storage->content);
 405
 406   xbt_lib_set(storage_lib, storage->id, ROUTING_STORAGE_LEVEL, (void *) xbt_strdup(storage->type_id));
 407
 408   // if storage content is not specified use the content of storage_type if any
 409   if(!strcmp(storage->content,"") && strcmp(((storage_type_t) stype)->content,"")){
 410     storage->content = ((storage_type_t) stype)->content;
 411     storage->content_type = ((storage_type_t) stype)->content_type;
 412     XBT_DEBUG("For disk '%s' content is empty, inherit the content (of type %s) from storage type '%s' ",
 413         storage->id,((storage_type_t) stype)->content_type,
 414         ((storage_type_t) stype)->type_id);
 415   }
 416
 417   XBT_DEBUG("SURF storage create resource\n\t\tid '%s'\n\t\ttype '%s' "
 418       "\n\t\tmodel '%s' \n\t\tcontent '%s'\n\t\tcontent_type '%s' "
 419       "\n\t\tproperties '%p''\n",
 420       storage->id,
 421       ((storage_type_t) stype)->model,
 422       ((storage_type_t) stype)->type_id,
 423       storage->content,
 424       storage->content_type,
 425     storage->properties);
 426
 427   auto s = surf_storage_model->createStorage(storage->id, ((storage_type_t)stype)->type_id, storage->content,
 428                                              storage->content_type, storage->attach);
 429
 430   if (storage->properties) {
 431     xbt_dict_cursor_t cursor = nullptr;
 432     char *key, *data;
 433     xbt_dict_foreach (storage->properties, cursor, key, data)
 434       s->setProperty(key, data);
 435     xbt_dict_free(&storage->properties);
 436   }
 437 }
 438 void sg_platf_new_storage_type(sg_platf_storage_type_cbarg_t storage_type){
 439
 440   xbt_assert(!xbt_lib_get_or_null(storage_type_lib, storage_type->id,ROUTING_STORAGE_TYPE_LEVEL),
 441                "Reading a storage type, processing unit \"%s\" already exists", storage_type->id);
 442
 443   storage_type_t stype = xbt_new0(s_storage_type_t, 1);
 444   stype->model = xbt_strdup(storage_type->model);
 445   stype->properties = storage_type->properties;
 446   stype->content = xbt_strdup(storage_type->content);
 447   stype->content_type = xbt_strdup(storage_type->content_type);
 448   stype->type_id = xbt_strdup(storage_type->id);
 449   stype->size = storage_type->size;
 450   stype->model_properties = storage_type->model_properties;
 451
 452   XBT_DEBUG("ROUTING Create a storage type id '%s' with model '%s', "
 453       "content '%s', and content_type '%s'",
 454       stype->type_id,
 455       stype->model,
 456       storage_type->content,
 457       storage_type->content_type);
 458
 459   xbt_lib_set(storage_type_lib,
 460       stype->type_id,
 461       ROUTING_STORAGE_TYPE_LEVEL,
 462       (void *) stype);
 463 }
 464
 465 static void mount_free(void *p)
 466 {
 467   mount_t mnt = (mount_t) p;
 468   xbt_free(mnt->name);
 469 }
 470
 471 void sg_platf_new_mount(sg_platf_mount_cbarg_t mount){
 472   xbt_assert(xbt_lib_get_or_null(storage_lib, mount->storageId, ROUTING_STORAGE_LEVEL),
 473       "Cannot mount non-existent disk \"%s\"", mount->storageId);
 474
 475   XBT_DEBUG("ROUTING Mount '%s' on '%s'",mount->storageId, mount->name);
 476
 477   s_mount_t mnt;
 478   mnt.storage = surf_storage_resource_priv(surf_storage_resource_by_name(mount->storageId));
 479   mnt.name = xbt_strdup(mount->name);
 480
 481   if(!mount_list){
 482     XBT_DEBUG("Create a Mount list for %s",A_surfxml_host_id);
 483     mount_list = xbt_dynar_new(sizeof(s_mount_t), mount_free);
 484   }
 485   xbt_dynar_push(mount_list, &mnt);
 486 }
 487
 488 void sg_platf_new_route(sg_platf_route_cbarg_t route)
 489 {
 490   routing_get_current()->addRoute(route);
 491 }
 492
 493 void sg_platf_new_bypassRoute(sg_platf_route_cbarg_t bypassRoute)
 494 {
 495   routing_get_current()->addBypassRoute(bypassRoute);
 496 }
 497
 498 void sg_platf_new_process(sg_platf_process_cbarg_t process)
 499 {
 500   sg_host_t host = sg_host_by_name(process->host);
 501   if (!host) {
 502     // The requested host does not exist. Do a nice message to the user
 503     char *tmp = bprintf("Cannot create process '%s': host '%s' does not exist\nExisting hosts: '",process->function, process->host);
 504     xbt_strbuff_t msg = xbt_strbuff_new_from(tmp);
 505     free(tmp);
 506     xbt_dynar_t all_hosts = xbt_dynar_sort_strings(sg_hosts_as_dynar());
 507     simgrid::s4u::Host* host;
 508     unsigned int cursor;
 509     xbt_dynar_foreach(all_hosts,cursor, host) {
 510       xbt_strbuff_append(msg,host->name().c_str());
 511       xbt_strbuff_append(msg,"', '");
 512       if (msg->used > 1024) {
 513         msg->data[msg->used-3]='\0';
 514         msg->used -= 3;
 515
 516         xbt_strbuff_append(msg," ...(list truncated)......");// That will be shortened by 3 chars when existing the loop
 517         break;
 518       }
 519     }
 520     msg->data[msg->used-3]='\0';
 521     xbt_die("%s", msg->data);
 522   }
 523   simgrid::simix::ActorCodeFactory& factory = SIMIX_get_actor_code_factory(process->function);
 524   xbt_assert(factory, "Function '%s' unknown", process->function);
 525
 526   double start_time = process->start_time;
 527   double kill_time  = process->kill_time;
 528   int auto_restart = process->on_failure == SURF_PROCESS_ON_FAILURE_DIE ? 0 : 1;
 529
 530   std::vector<std::string> args(process->argv, process->argv + process->argc);
 531   std::function<void()> code = factory(std::move(args));
 532
 533   smx_process_arg_t arg = nullptr;
 534   smx_actor_t process_created = nullptr;
 535
 536   arg = new simgrid::simix::ProcessArg();
 537   arg->name = std::string(process->argv[0]);
 538   arg->code = code;
 539   arg->data = nullptr;
 540   arg->host = host;
 541   arg->kill_time = kill_time;
 542   arg->properties = current_property_set;
 543
 544   sg_host_simix(host)->boot_processes.push_back(arg);
 545
 546   if (start_time > SIMIX_get_clock()) {
 547
 548     arg = new simgrid::simix::ProcessArg();
 549     arg->name = std::string(process->argv[0]);
 550     arg->code = std::move(code);
 551     arg->data = nullptr;
 552     arg->host = host;
 553     arg->kill_time = kill_time;
 554     arg->properties = current_property_set;
 555
 556     XBT_DEBUG("Process %s@%s will be started at time %f",
 557       arg->name.c_str(), arg->host->name().c_str(), start_time);
 558     SIMIX_timer_set(start_time, [=]() {
 559       simix_global->create_process_function(
 560                                             arg->name.c_str(),
 561                                             std::move(arg->code),
 562                                             arg->data,
 563                                             arg->host,
 564                                             arg->kill_time,
 565                                             arg->properties,
 566                                             arg->auto_restart,
 567                                             nullptr);
 568       delete arg;
 569     });
 570   } else {                      // start_time <= SIMIX_get_clock()
 571     XBT_DEBUG("Starting Process %s(%s) right now", arg->name.c_str(), host->cname());
 572
 573     process_created = simix_global->create_process_function(
 574         arg->name.c_str(), std::move(code), nullptr,
 575         host, kill_time,
 576         current_property_set, auto_restart, nullptr);
 577
 578     /* verify if process has been created (won't be the case if the host is currently dead, but that's fine) */
 579     if (!process_created) {
 580       return;
 581     }
 582   }
 583   current_property_set = nullptr;
 584 }
 585
 586 void sg_platf_new_peer(sg_platf_peer_cbarg_t peer)
 587 {
 588   using simgrid::kernel::routing::NetCard;
 589   using simgrid::kernel::routing::AsCluster;
 590
 591   char *host_id = bprintf("peer_%s", peer->id);
 592   char *router_id = bprintf("router_%s", peer->id);
 593
 594   XBT_DEBUG(" ");
 595
 596   XBT_DEBUG("<AS id=\"%s\"\trouting=\"Cluster\">", peer->id);
 597   s_sg_platf_AS_cbarg_t AS;
 598   AS.id      = peer->id;
 599   AS.routing = A_surfxml_AS_routing_Cluster;
 600   sg_platf_new_AS_begin(&AS);
 601
 602   XBT_DEBUG("<host\tid=\"%s\"\tpower=\"%f\"/>", host_id, peer->speed);
 603   s_sg_platf_host_cbarg_t host;
 604   memset(&host, 0, sizeof(host));
 605   host.id = host_id;
 606
 607   host.speed_per_pstate.push_back(peer->speed);
 608   host.pstate = 0;
 609   host.speed_trace = peer->availability_trace;
 610   host.state_trace = peer->state_trace;
 611   host.core_amount = 1;
 612   sg_platf_new_host(&host);
 613
 614   s_sg_platf_link_cbarg_t link;
 615   memset(&link, 0, sizeof(link));
 616   link.policy  = SURF_LINK_SHARED;
 617   link.latency = peer->lat;
 618
 619   char* link_up = bprintf("link_%s_UP",peer->id);
 620   XBT_DEBUG("<link\tid=\"%s\"\tbw=\"%f\"\tlat=\"%f\"/>", link_up, peer->bw_out, peer->lat);
 621   link.id = link_up;
 622   link.bandwidth = peer->bw_out;
 623   sg_platf_new_link(&link);
 624
 625   char* link_down = bprintf("link_%s_DOWN",peer->id);
 626   XBT_DEBUG("<link\tid=\"%s\"\tbw=\"%f\"\tlat=\"%f\"/>", link_down, peer->bw_in, peer->lat);
 627   link.id = link_down;
 628   link.bandwidth = peer->bw_in;
 629   sg_platf_new_link(&link);
 630
 631   XBT_DEBUG("<host_link\tid=\"%s\"\tup=\"%s\"\tdown=\"%s\" />", host_id,link_up,link_down);
 632   s_sg_platf_host_link_cbarg_t host_link;
 633   memset(&host_link, 0, sizeof(host_link));
 634   host_link.id        = host_id;
 635   host_link.link_up   = link_up;
 636   host_link.link_down = link_down;
 637   sg_platf_new_hostlink(&host_link);
 638   free(link_up);
 639   free(link_down);
 640
 641   XBT_DEBUG("<router id=\"%s\"/>", router_id);
 642   s_sg_platf_router_cbarg_t router;
 643   memset(&router, 0, sizeof(router));
 644   router.id = router_id;
 645   router.coord = peer->coord;
 646   sg_platf_new_router(&router);
 647
 648   XBT_DEBUG("</AS>");
 649   sg_platf_new_AS_seal();
 650   XBT_DEBUG(" ");
 651
 652   free(router_id);
 653   free(host_id);
 654 }
 655
 656 void sg_platf_begin() { /* Do nothing: just for symmetry of user code */ }
 657
 658 void sg_platf_end() {
 659   simgrid::surf::on_postparse();
 660 }
 661
 662 /* Pick the right models for CPU, net and host, and call their model_init_preparse */
 663 static void surf_config_models_setup()
 664 {
 665   const char* host_model_name    = xbt_cfg_get_string("host/model");
 666   const char* vm_model_name      = xbt_cfg_get_string("vm/model");
 667   const char* network_model_name = xbt_cfg_get_string("network/model");
 668   const char* cpu_model_name     = xbt_cfg_get_string("cpu/model");
 669   const char* storage_model_name = xbt_cfg_get_string("storage/model");
 670
 671   /* The compound host model is needed when using non-default net/cpu models */
 672   if ((!xbt_cfg_is_default_value("network/model") || !xbt_cfg_is_default_value("cpu/model")) &&
 673       xbt_cfg_is_default_value("host/model")) {
 674     host_model_name = "compound";
 675     xbt_cfg_set_string("host/model", host_model_name);
 676   }
 677
 678   XBT_DEBUG("host model: %s", host_model_name);
 679   if (!strcmp(host_model_name, "compound")) {
 680     xbt_assert(cpu_model_name, "Set a cpu model to use with the 'compound' host model");
 681     xbt_assert(network_model_name, "Set a network model to use with the 'compound' host model");
 682
 683     int cpu_id = find_model_description(surf_cpu_model_description, cpu_model_name);
 684     surf_cpu_model_description[cpu_id].model_init_preparse();
 685
 686     int network_id = find_model_description(surf_network_model_description, network_model_name);
 687     surf_network_model_description[network_id].model_init_preparse();
 688   }
 689
 690   XBT_DEBUG("Call host_model_init");
 691   int host_id = find_model_description(surf_host_model_description, host_model_name);
 692   surf_host_model_description[host_id].model_init_preparse();
 693
 694   XBT_DEBUG("Call vm_model_init");
 695   int vm_id = find_model_description(surf_vm_model_description, vm_model_name);
 696   surf_vm_model_description[vm_id].model_init_preparse();
 697
 698   XBT_DEBUG("Call storage_model_init");
 699   int storage_id = find_model_description(surf_storage_model_description, storage_model_name);
 700   surf_storage_model_description[storage_id].model_init_preparse();
 701 }
 702
 703 /**
 704  * \brief Add an AS to the platform
 705  *
 706  * Add a new autonomous system to the platform. Any elements (such as host,
 707  * router or sub-AS) added after this call and before the corresponding call
 708  * to sg_platf_new_AS_seal() will be added to this AS.
 709  *
 710  * Once this function was called, the configuration concerning the used
 711  * models cannot be changed anymore.
 712  *
 713  * @param AS the parameters defining the AS to build.
 714  */
 715 simgrid::s4u::As * sg_platf_new_AS_begin(sg_platf_AS_cbarg_t AS)
 716 {
 717   if (!surf_parse_models_setup_already_called) {
 718     /* Initialize the surf models. That must be done after we got all config, and before we need the models.
 719      * That is, after the last <config> tag, if any, and before the first of cluster|peer|AS|trace|trace_connect
 720      *
 721      * I'm not sure for <trace> and <trace_connect>, there may be a bug here
 722      * (FIXME: check it out by creating a file beginning with one of these tags)
 723      * but cluster and peer create ASes internally, so putting the code in there is ok.
 724      */
 725     surf_parse_models_setup_already_called = 1;
 726     surf_config_models_setup();
 727   }
 728
 729   _sg_cfg_init_status = 2; /* HACK: direct access to the global controlling the level of configuration to prevent
 730                             * any further config now that we created some real content */
 731
 732
 733   /* search the routing model */
 734   simgrid::kernel::routing::AsImpl *new_as = nullptr;
 735   switch(AS->routing){
 736     case A_surfxml_AS_routing_Cluster:
 737       new_as = new simgrid::kernel::routing::AsCluster(current_routing, AS->id);
 738       break;
 739     case A_surfxml_AS_routing_ClusterDragonfly:
 740       new_as = new simgrid::kernel::routing::AsClusterDragonfly(current_routing, AS->id);
 741       break;
 742     case A_surfxml_AS_routing_ClusterTorus:
 743       new_as = new simgrid::kernel::routing::AsClusterTorus(current_routing, AS->id);
 744       break;
 745     case A_surfxml_AS_routing_ClusterFatTree:
 746       new_as = new simgrid::kernel::routing::AsClusterFatTree(current_routing, AS->id);
 747       break;
 748     case A_surfxml_AS_routing_Dijkstra:
 749       new_as = new simgrid::kernel::routing::AsDijkstra(current_routing, AS->id, 0);
 750       break;
 751     case A_surfxml_AS_routing_DijkstraCache:
 752       new_as = new simgrid::kernel::routing::AsDijkstra(current_routing, AS->id, 1);
 753       break;
 754     case A_surfxml_AS_routing_Floyd:
 755       new_as = new simgrid::kernel::routing::AsFloyd(current_routing, AS->id);
 756       break;
 757     case A_surfxml_AS_routing_Full:
 758       new_as = new simgrid::kernel::routing::AsFull(current_routing, AS->id);
 759       break;
 760     case A_surfxml_AS_routing_None:
 761       new_as = new simgrid::kernel::routing::AsNone(current_routing, AS->id);
 762       break;
 763     case A_surfxml_AS_routing_Vivaldi:
 764       new_as = new simgrid::kernel::routing::AsVivaldi(current_routing, AS->id);
 765       break;
 766     default:
 767       xbt_die("Not a valid model!");
 768       break;
 769   }
 770
 771   if (current_routing == nullptr) { /* it is the first one */
 772     xbt_assert(simgrid::s4u::Engine::instance()->pimpl->rootAs_ == nullptr,
 773                "All defined components must belong to a AS");
 774     simgrid::s4u::Engine::instance()->pimpl->rootAs_ = new_as;
 775
 776   } else {
 777     /* set the father behavior */
 778     if (current_routing->hierarchy_ == simgrid::kernel::routing::AsImpl::RoutingMode::unset)
 779       current_routing->hierarchy_ = simgrid::kernel::routing::AsImpl::RoutingMode::recursive;
 780     /* add to the sons dictionary */
 781     xbt_dict_set(current_routing->children(), AS->id, (void *) new_as, nullptr);
 782   }
 783
 784   /* set the new current component of the tree */
 785   current_routing = new_as;
 786
 787   simgrid::kernel::routing::asCreatedCallbacks(new_as);
 788   if (TRACE_is_enabled())
 789     sg_instr_AS_begin(AS);
 790
 791   return new_as;
 792 }
 793
 794 /**
 795  * \brief Specify that the description of the current AS is finished
 796  *
 797  * Once you've declared all the content of your AS, you have to seal
 798  * it with this call. Your AS is not usable until you call this function.
 799  */
 800 void sg_platf_new_AS_seal()
 801 {
 802   xbt_assert(current_routing, "Cannot seal the current AS: none under construction");
 803   current_routing->seal();
 804   current_routing = static_cast<simgrid::kernel::routing::AsImpl*>(current_routing->father());
 805
 806   if (TRACE_is_enabled())
 807     sg_instr_AS_end();
 808 }
 809
 810 /** @brief Add a link connecting an host to the rest of its AS (which must be cluster or vivaldi) */
 811 void sg_platf_new_hostlink(sg_platf_host_link_cbarg_t hostlink)
 812 {
 813   simgrid::kernel::routing::NetCard *netcard = sg_host_by_name(hostlink->id)->pimpl_netcard;
 814   xbt_assert(netcard, "Host '%s' not found!", hostlink->id);
 815   xbt_assert(dynamic_cast<simgrid::kernel::routing::AsCluster*>(current_routing),
 816       "Only hosts from Cluster and Vivaldi ASes can get an host_link.");
 817
 818   s_surf_parsing_link_up_down_t link_up_down;
 819   link_up_down.linkUp = Link::byName(hostlink->link_up);
 820   link_up_down.linkDown = Link::byName(hostlink->link_down);
 821
 822   xbt_assert(link_up_down.linkUp, "Link '%s' not found!",hostlink->link_up);
 823   xbt_assert(link_up_down.linkDown, "Link '%s' not found!",hostlink->link_down);
 824
 825   auto as_cluster = static_cast<simgrid::kernel::routing::AsCluster*>(current_routing);
 826
 827   if (as_cluster->privateLinks_.find(netcard->id()) != as_cluster->privateLinks_.end())
 828     surf_parse_error("Host_link for '%s' is already defined!",hostlink->id);
 829
 830   XBT_DEBUG("Push Host_link for host '%s' to position %d", netcard->name().c_str(), netcard->id());
 831   as_cluster->privateLinks_.insert({netcard->id(), link_up_down});
 832 }