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   if (current_routing->hierarchy_ == simgrid::kernel::routing::AsImpl::RoutingMode::unset)
  81     current_routing->hierarchy_ = simgrid::kernel::routing::AsImpl::RoutingMode::base;
  82
  83   simgrid::kernel::routing::NetCard *netcard =
  84       new simgrid::kernel::routing::NetCardImpl(host->id, simgrid::kernel::routing::NetCard::Type::Host, current_routing);
  85
  86   simgrid::s4u::Host* h = new simgrid::s4u::Host(host->id);
  87   h->pimpl_netcard = netcard;
  88
  89   if (host->coord && strcmp(host->coord, "")) {
  90     unsigned int cursor;
  91     char*str;
  92
  93     xbt_assert(COORD_HOST_LEVEL, "To use host coordinates, please add --cfg=network/coordinates:yes to your command line");
  94     /* Pre-parse the host coordinates -- FIXME factorize with routers by overloading the routing->parse_PU function*/
  95     xbt_dynar_t ctn_str = xbt_str_split_str(host->coord, " ");
  96     xbt_assert(xbt_dynar_length(ctn_str)==3,"Coordinates of %s must have 3 dimensions", host->id);
  97
  98     xbt_dynar_t ctn = xbt_dynar_new(sizeof(double),nullptr);
  99     xbt_dynar_foreach(ctn_str,cursor, str) {
 100       double val = xbt_str_parse_double(str, "Invalid coordinate: %s");
 101       xbt_dynar_push(ctn,&val);
 102     }
 103     xbt_dynar_free(&ctn_str);
 104     xbt_dynar_shrink(ctn, 0);
 105     h->extension_set(COORD_HOST_LEVEL, (void *) ctn);
 106   }
 107
 108   simgrid::surf::Cpu *cpu = surf_cpu_model_pm->createCpu( h, &host->speed_per_pstate, host->core_amount);
 109   if (host->state_trace)
 110     cpu->setStateTrace(host->state_trace);
 111   if (host->speed_trace)
 112     cpu->setSpeedTrace(host->speed_trace);
 113
 114   new simgrid::surf::HostImpl(h, mount_list);
 115   xbt_lib_set(storage_lib, host->id, ROUTING_STORAGE_HOST_LEVEL, (void*)mount_list);
 116
 117   mount_list = nullptr;
 118
 119   if (host->properties) {
 120     xbt_dict_cursor_t cursor=nullptr;
 121     char *key,*data;
 122     xbt_dict_foreach(host->properties,cursor,key,data)
 123       h->setProperty(key,data);
 124     xbt_dict_free(&host->properties);
 125   }
 126
 127   if (host->pstate != 0)
 128     cpu->setPState(host->pstate);
 129
 130   simgrid::s4u::Host::onCreation(*h);
 131
 132   if (TRACE_is_enabled() && TRACE_needs_platform())
 133     sg_instr_new_host(host);
 134 }
 135
 136 /** @brief Add a "router" to the network element list */
 137 void sg_platf_new_router(sg_platf_router_cbarg_t router)
 138 {
 139   using simgrid::kernel::routing::AsCluster;
 140   simgrid::kernel::routing::AsImpl* current_routing = routing_get_current();
 141
 142   if (current_routing->hierarchy_ == simgrid::kernel::routing::AsImpl::RoutingMode::unset)
 143     current_routing->hierarchy_ = simgrid::kernel::routing::AsImpl::RoutingMode::base;
 144   xbt_assert(nullptr == xbt_lib_get_or_null(as_router_lib, router->id, ROUTING_ASR_LEVEL),
 145              "Refusing to create a router named '%s': this name already describes a node.", router->id);
 146
 147   simgrid::kernel::routing::NetCard* netcard =
 148     new simgrid::kernel::routing::NetCardImpl(router->id, simgrid::kernel::routing::NetCard::Type::Router, current_routing);
 149   xbt_lib_set(as_router_lib, router->id, ROUTING_ASR_LEVEL, netcard);
 150   XBT_DEBUG("Router '%s' has the id %d", router->id, netcard->id());
 151
 152   if (router->coord && strcmp(router->coord, "")) {
 153     unsigned int cursor;
 154     char*str;
 155
 156     xbt_assert(COORD_ASR_LEVEL, "To use host coordinates, please add --cfg=network/coordinates:yes to your command line");
 157     /* Pre-parse the host coordinates */
 158     xbt_dynar_t ctn_str = xbt_str_split_str(router->coord, " ");
 159     xbt_assert(xbt_dynar_length(ctn_str)==3,"Coordinates of %s must have 3 dimensions", router->id);
 160     xbt_dynar_t ctn = xbt_dynar_new(sizeof(double),nullptr);
 161     xbt_dynar_foreach(ctn_str,cursor, str) {
 162       double val = xbt_str_parse_double(str, "Invalid coordinate: %s");
 163       xbt_dynar_push(ctn,&val);
 164     }
 165     xbt_dynar_free(&ctn_str);
 166     xbt_dynar_shrink(ctn, 0);
 167     xbt_lib_set(as_router_lib, router->id, COORD_ASR_LEVEL, (void *) ctn);
 168   }
 169
 170   auto cluster = dynamic_cast<AsCluster*>(current_routing);
 171   if(cluster != nullptr)
 172     cluster->router_ = static_cast<simgrid::kernel::routing::NetCard*>(xbt_lib_get_or_null(as_router_lib, router->id, ROUTING_ASR_LEVEL));
 173
 174   if (TRACE_is_enabled() && TRACE_needs_platform())
 175     sg_instr_new_router(router);
 176 }
 177
 178 void sg_platf_new_link(sg_platf_link_cbarg_t link){
 179   std::vector<char*> names;
 180
 181   if (link->policy == SURF_LINK_FULLDUPLEX) {
 182     names.push_back(bprintf("%s_UP", link->id));
 183     names.push_back(bprintf("%s_DOWN", link->id));
 184   } else {
 185     names.push_back(xbt_strdup(link->id));
 186   }
 187   for (auto link_name : names) {
 188     Link *l = surf_network_model->createLink(link_name, link->bandwidth, link->latency, link->policy, link->properties);
 189
 190     if (link->latency_trace)
 191       l->setLatencyTrace(link->latency_trace);
 192     if (link->bandwidth_trace)
 193       l->setBandwidthTrace(link->bandwidth_trace);
 194     if (link->state_trace)
 195       l->setStateTrace(link->state_trace);
 196
 197     xbt_free(link_name);
 198   }
 199
 200   simgrid::surf::on_link(link);
 201 }
 202
 203 void sg_platf_new_cluster(sg_platf_cluster_cbarg_t cluster)
 204 {
 205   using simgrid::kernel::routing::AsCluster;
 206   using simgrid::kernel::routing::AsClusterDragonfly;
 207   using simgrid::kernel::routing::AsClusterFatTree;
 208   using simgrid::kernel::routing::AsClusterTorus;
 209
 210   int rankId=0;
 211
 212   s_sg_platf_link_cbarg_t link;
 213
 214   // What an inventive way of initializing the AS that I have as ancestor :-(
 215   s_sg_platf_AS_cbarg_t AS;
 216   AS.id = cluster->id;
 217   switch (cluster->topology) {
 218   case SURF_CLUSTER_TORUS:
 219     AS.routing = A_surfxml_AS_routing_ClusterTorus;
 220     break;
 221   case SURF_CLUSTER_DRAGONFLY:
 222     AS.routing = A_surfxml_AS_routing_ClusterDragonfly;
 223     break;
 224   case SURF_CLUSTER_FAT_TREE:
 225     AS.routing = A_surfxml_AS_routing_ClusterFatTree;
 226     break;
 227   default:
 228     AS.routing = A_surfxml_AS_routing_Cluster;
 229     break;
 230   }
 231   sg_platf_new_AS_begin(&AS);
 232   simgrid::kernel::routing::AsCluster *current_as = static_cast<AsCluster*>(routing_get_current());
 233   current_as->parse_specific_arguments(cluster);
 234
 235   if(cluster->loopback_bw!=0 || cluster->loopback_lat!=0){
 236     current_as->linkCountPerNode_++;
 237     current_as->hasLoopback_ = 1;
 238   }
 239
 240   if(cluster->limiter_link!=0){
 241     current_as->linkCountPerNode_++;
 242     current_as->hasLimiter_ = 1;
 243   }
 244
 245   for (int i : *cluster->radicals) {
 246     char * host_id = bprintf("%s%d%s", cluster->prefix, i, cluster->suffix);
 247     char * link_id = bprintf("%s_link_%d", cluster->id, i);
 248
 249     XBT_DEBUG("<host\tid=\"%s\"\tpower=\"%f\">", host_id, cluster->speed);
 250
 251     s_sg_platf_host_cbarg_t host;
 252     memset(&host, 0, sizeof(host));
 253     host.id = host_id;
 254     if ((cluster->properties != nullptr) && (!xbt_dict_is_empty(cluster->properties))) {
 255       xbt_dict_cursor_t cursor=nullptr;
 256       char *key,*data;
 257       host.properties = xbt_dict_new();
 258
 259       xbt_dict_foreach(cluster->properties,cursor,key,data) {
 260         xbt_dict_set(host.properties, key, xbt_strdup(data),free);
 261       }
 262     }
 263
 264     host.speed_per_pstate.push_back(cluster->speed);
 265     host.pstate = 0;
 266     host.core_amount = cluster->core_amount;
 267     host.coord = "";
 268     sg_platf_new_host(&host);
 269     XBT_DEBUG("</host>");
 270
 271     XBT_DEBUG("<link\tid=\"%s\"\tbw=\"%f\"\tlat=\"%f\"/>", link_id, cluster->bw, cluster->lat);
 272
 273     s_surf_parsing_link_up_down_t info_lim;
 274     s_surf_parsing_link_up_down_t info_loop;
 275     // All links are saved in a matrix;
 276     // every row describes a single node; every node may have multiple links.
 277     // the first column may store a link from x to x if p_has_loopback is set
 278     // the second column may store a limiter link if p_has_limiter is set
 279     // other columns are to store one or more link for the node
 280
 281     //add a loopback link
 282     if(cluster->loopback_bw!=0 || cluster->loopback_lat!=0){
 283       char *tmp_link = bprintf("%s_loopback", link_id);
 284       XBT_DEBUG("<loopback\tid=\"%s\"\tbw=\"%f\"/>", tmp_link, cluster->loopback_bw);
 285
 286       memset(&link, 0, sizeof(link));
 287       link.id        = tmp_link;
 288       link.bandwidth = cluster->loopback_bw;
 289       link.latency   = cluster->loopback_lat;
 290       link.policy    = SURF_LINK_FATPIPE;
 291       sg_platf_new_link(&link);
 292       info_loop.linkUp = Link::byName(tmp_link);
 293       info_loop.linkDown = Link::byName(tmp_link);
 294       free(tmp_link);
 295
 296       auto as_cluster = static_cast<AsCluster*>(current_as);
 297       as_cluster->privateLinks_.insert({rankId*as_cluster->linkCountPerNode_, info_loop});
 298     }
 299
 300     //add a limiter link (shared link to account for maximal bandwidth of the node)
 301     if(cluster->limiter_link!=0){
 302       char *tmp_link = bprintf("%s_limiter", link_id);
 303       XBT_DEBUG("<limiter\tid=\"%s\"\tbw=\"%f\"/>", tmp_link, cluster->limiter_link);
 304
 305       memset(&link, 0, sizeof(link));
 306       link.id = tmp_link;
 307       link.bandwidth = cluster->limiter_link;
 308       link.latency = 0;
 309       link.policy = SURF_LINK_SHARED;
 310       sg_platf_new_link(&link);
 311       info_lim.linkUp = info_lim.linkDown = Link::byName(tmp_link);
 312       free(tmp_link);
 313       current_as->privateLinks_.insert(
 314           {rankId * current_as->linkCountPerNode_ + current_as->hasLoopback_ , info_lim});
 315     }
 316
 317     //call the cluster function that adds the others links
 318     if (cluster->topology == SURF_CLUSTER_FAT_TREE) {
 319       static_cast<AsClusterFatTree*>(current_as)->addProcessingNode(i);
 320     }
 321     else {
 322       current_as->create_links_for_node(cluster, i, rankId,
 323           rankId*current_as->linkCountPerNode_ + current_as->hasLoopback_ + current_as->hasLimiter_ );
 324     }
 325     xbt_free(link_id);
 326     xbt_free(host_id);
 327     rankId++;
 328   }
 329
 330   // Add a router. It is magically used thanks to the way in which surf_routing_cluster is written,
 331   // and it's very useful to connect clusters together
 332   XBT_DEBUG(" ");
 333   XBT_DEBUG("<router id=\"%s\"/>", cluster->router_id);
 334   char *newid = nullptr;
 335   s_sg_platf_router_cbarg_t router;
 336   memset(&router, 0, sizeof(router));
 337   router.id = cluster->router_id;
 338   if (!router.id || !strcmp(router.id, ""))
 339     router.id = newid = bprintf("%s%s_router%s", cluster->prefix, cluster->id, cluster->suffix);
 340   sg_platf_new_router(&router);
 341   current_as->router_ = (simgrid::kernel::routing::NetCard*) xbt_lib_get_or_null(as_router_lib, router.id, ROUTING_ASR_LEVEL);
 342   free(newid);
 343
 344   //Make the backbone
 345   if ((cluster->bb_bw != 0) || (cluster->bb_lat != 0)) {
 346
 347     memset(&link, 0, sizeof(link));
 348     link.id        = bprintf("%s_backbone", cluster->id);
 349     link.bandwidth = cluster->bb_bw;
 350     link.latency   = cluster->bb_lat;
 351     link.policy    = cluster->bb_sharing_policy;
 352
 353     XBT_DEBUG("<link\tid=\"%s\" bw=\"%f\" lat=\"%f\"/>", link.id, cluster->bb_bw, cluster->bb_lat);
 354     sg_platf_new_link(&link);
 355
 356     routing_cluster_add_backbone(Link::byName(link.id));
 357     free((char*)link.id);
 358   }
 359
 360   XBT_DEBUG("</AS>");
 361   sg_platf_new_AS_seal();
 362
 363   simgrid::surf::on_cluster(cluster);
 364   delete cluster->radicals;
 365 }
 366 void routing_cluster_add_backbone(simgrid::surf::Link* bb) {
 367   simgrid::kernel::routing::AsCluster *cluster = dynamic_cast<simgrid::kernel::routing::AsCluster*>(current_routing);
 368
 369   xbt_assert(cluster, "Only hosts from Cluster can get a backbone.");
 370   xbt_assert(nullptr == cluster->backbone_, "Cluster %s already has a backbone link!", cluster->name());
 371
 372   cluster->backbone_ = bb;
 373   XBT_DEBUG("Add a backbone to AS '%s'", current_routing->name());
 374 }
 375
 376 void sg_platf_new_cabinet(sg_platf_cabinet_cbarg_t cabinet)
 377 {
 378   for (int radical : *cabinet->radicals) {
 379     char *hostname = bprintf("%s%d%s", cabinet->prefix, radical, cabinet->suffix);
 380     s_sg_platf_host_cbarg_t host;
 381     memset(&host, 0, sizeof(host));
 382     host.pstate           = 0;
 383     host.core_amount      = 1;
 384     host.id               = hostname;
 385     host.speed_per_pstate.push_back(cabinet->speed);
 386     sg_platf_new_host(&host);
 387
 388     s_sg_platf_link_cbarg_t link;
 389     memset(&link, 0, sizeof(link));
 390     link.policy    = SURF_LINK_FULLDUPLEX;
 391     link.latency   = cabinet->lat;
 392     link.bandwidth = cabinet->bw;
 393     link.id        = bprintf("link_%s",hostname);
 394     sg_platf_new_link(&link);
 395     free((char*)link.id);
 396
 397     s_sg_platf_host_link_cbarg_t host_link;
 398     memset(&host_link, 0, sizeof(host_link));
 399     host_link.id        = hostname;
 400     host_link.link_up   = bprintf("link_%s_UP",hostname);
 401     host_link.link_down = bprintf("link_%s_DOWN",hostname);
 402     sg_platf_new_hostlink(&host_link);
 403     free((char*)host_link.link_up);
 404     free((char*)host_link.link_down);
 405
 406     free(hostname);
 407   }
 408   delete cabinet->radicals;
 409 }
 410
 411 void sg_platf_new_storage(sg_platf_storage_cbarg_t storage)
 412 {
 413   xbt_assert(!xbt_lib_get_or_null(storage_lib, storage->id,ROUTING_STORAGE_LEVEL),
 414                "Refusing to add a second storage named \"%s\"", storage->id);
 415
 416   void* stype = xbt_lib_get_or_null(storage_type_lib, storage->type_id,ROUTING_STORAGE_TYPE_LEVEL);
 417   xbt_assert(stype,"No storage type '%s'", storage->type_id);
 418
 419   XBT_DEBUG("ROUTING Create a storage name '%s' with type_id '%s' and content '%s'",
 420       storage->id,
 421       storage->type_id,
 422       storage->content);
 423
 424   xbt_lib_set(storage_lib, storage->id, ROUTING_STORAGE_LEVEL, (void *) xbt_strdup(storage->type_id));
 425
 426   // if storage content is not specified use the content of storage_type if any
 427   if(!strcmp(storage->content,"") && strcmp(((storage_type_t) stype)->content,"")){
 428     storage->content = ((storage_type_t) stype)->content;
 429     storage->content_type = ((storage_type_t) stype)->content_type;
 430     XBT_DEBUG("For disk '%s' content is empty, inherit the content (of type %s) from storage type '%s' ",
 431         storage->id,((storage_type_t) stype)->content_type,
 432         ((storage_type_t) stype)->type_id);
 433   }
 434
 435   XBT_DEBUG("SURF storage create resource\n\t\tid '%s'\n\t\ttype '%s' "
 436       "\n\t\tmodel '%s' \n\t\tcontent '%s'\n\t\tcontent_type '%s' "
 437       "\n\t\tproperties '%p''\n",
 438       storage->id,
 439       ((storage_type_t) stype)->model,
 440       ((storage_type_t) stype)->type_id,
 441       storage->content,
 442       storage->content_type,
 443     storage->properties);
 444
 445   surf_storage_model->createStorage(storage->id,
 446                                      ((storage_type_t) stype)->type_id,
 447                                      storage->content,
 448                                      storage->content_type,
 449                    storage->properties,
 450                                      storage->attach);
 451 }
 452 void sg_platf_new_storage_type(sg_platf_storage_type_cbarg_t storage_type){
 453
 454   xbt_assert(!xbt_lib_get_or_null(storage_type_lib, storage_type->id,ROUTING_STORAGE_TYPE_LEVEL),
 455                "Reading a storage type, processing unit \"%s\" already exists", storage_type->id);
 456
 457   storage_type_t stype = xbt_new0(s_storage_type_t, 1);
 458   stype->model = xbt_strdup(storage_type->model);
 459   stype->properties = storage_type->properties;
 460   stype->content = xbt_strdup(storage_type->content);
 461   stype->content_type = xbt_strdup(storage_type->content_type);
 462   stype->type_id = xbt_strdup(storage_type->id);
 463   stype->size = storage_type->size;
 464   stype->model_properties = storage_type->model_properties;
 465
 466   XBT_DEBUG("ROUTING Create a storage type id '%s' with model '%s', "
 467       "content '%s', and content_type '%s'",
 468       stype->type_id,
 469       stype->model,
 470       storage_type->content,
 471       storage_type->content_type);
 472
 473   xbt_lib_set(storage_type_lib,
 474       stype->type_id,
 475       ROUTING_STORAGE_TYPE_LEVEL,
 476       (void *) stype);
 477 }
 478
 479 static void mount_free(void *p)
 480 {
 481   mount_t mnt = (mount_t) p;
 482   xbt_free(mnt->name);
 483 }
 484
 485 void sg_platf_new_mount(sg_platf_mount_cbarg_t mount){
 486   xbt_assert(xbt_lib_get_or_null(storage_lib, mount->storageId, ROUTING_STORAGE_LEVEL),
 487       "Cannot mount non-existent disk \"%s\"", mount->storageId);
 488
 489   XBT_DEBUG("ROUTING Mount '%s' on '%s'",mount->storageId, mount->name);
 490
 491   s_mount_t mnt;
 492   mnt.storage = surf_storage_resource_priv(surf_storage_resource_by_name(mount->storageId));
 493   mnt.name = xbt_strdup(mount->name);
 494
 495   if(!mount_list){
 496     XBT_DEBUG("Create a Mount list for %s",A_surfxml_host_id);
 497     mount_list = xbt_dynar_new(sizeof(s_mount_t), mount_free);
 498   }
 499   xbt_dynar_push(mount_list, &mnt);
 500 }
 501
 502 void sg_platf_new_route(sg_platf_route_cbarg_t route)
 503 {
 504   routing_get_current()->addRoute(route);
 505 }
 506
 507 void sg_platf_new_bypassRoute(sg_platf_route_cbarg_t bypassRoute)
 508 {
 509   routing_get_current()->addBypassRoute(bypassRoute);
 510 }
 511
 512 void sg_platf_new_process(sg_platf_process_cbarg_t process)
 513 {
 514   sg_host_t host = sg_host_by_name(process->host);
 515   if (!host) {
 516     // The requested host does not exist. Do a nice message to the user
 517     char *tmp = bprintf("Cannot create process '%s': host '%s' does not exist\nExisting hosts: '",process->function, process->host);
 518     xbt_strbuff_t msg = xbt_strbuff_new_from(tmp);
 519     free(tmp);
 520     xbt_dynar_t all_hosts = xbt_dynar_sort_strings(sg_hosts_as_dynar());
 521     simgrid::s4u::Host* host;
 522     unsigned int cursor;
 523     xbt_dynar_foreach(all_hosts,cursor, host) {
 524       xbt_strbuff_append(msg,host->name().c_str());
 525       xbt_strbuff_append(msg,"', '");
 526       if (msg->used > 1024) {
 527         msg->data[msg->used-3]='\0';
 528         msg->used -= 3;
 529
 530         xbt_strbuff_append(msg," ...(list truncated)......");// That will be shortened by 3 chars when existing the loop
 531         break;
 532       }
 533     }
 534     msg->data[msg->used-3]='\0';
 535     xbt_die("%s", msg->data);
 536   }
 537   simgrid::simix::ActorCodeFactory& factory = SIMIX_get_actor_code_factory(process->function);
 538   xbt_assert(factory, "Function '%s' unknown", process->function);
 539
 540   double start_time = process->start_time;
 541   double kill_time  = process->kill_time;
 542   int auto_restart = process->on_failure == SURF_PROCESS_ON_FAILURE_DIE ? 0 : 1;
 543
 544   std::vector<std::string> args(process->argv, process->argv + process->argc);
 545   std::function<void()> code = factory(std::move(args));
 546
 547   smx_process_arg_t arg = nullptr;
 548   smx_actor_t process_created = nullptr;
 549
 550   arg = new simgrid::simix::ProcessArg();
 551   arg->name = std::string(process->argv[0]);
 552   arg->code = code;
 553   arg->data = nullptr;
 554   arg->host = host;
 555   arg->kill_time = kill_time;
 556   arg->properties = current_property_set;
 557
 558   sg_host_simix(host)->boot_processes.push_back(arg);
 559
 560   if (start_time > SIMIX_get_clock()) {
 561
 562     arg = new simgrid::simix::ProcessArg();
 563     arg->name = std::string(process->argv[0]);
 564     arg->code = std::move(code);
 565     arg->data = nullptr;
 566     arg->host = host;
 567     arg->kill_time = kill_time;
 568     arg->properties = current_property_set;
 569
 570     XBT_DEBUG("Process %s@%s will be started at time %f",
 571       arg->name.c_str(), arg->host->name().c_str(), start_time);
 572     SIMIX_timer_set(start_time, [=]() {
 573       simix_global->create_process_function(
 574                                             arg->name.c_str(),
 575                                             std::move(arg->code),
 576                                             arg->data,
 577                                             arg->host,
 578                                             arg->kill_time,
 579                                             arg->properties,
 580                                             arg->auto_restart,
 581                                             nullptr);
 582       delete arg;
 583     });
 584   } else {                      // start_time <= SIMIX_get_clock()
 585     XBT_DEBUG("Starting Process %s(%s) right now",
 586       arg->name.c_str(), sg_host_get_name(host));
 587
 588     process_created = simix_global->create_process_function(
 589         arg->name.c_str(), std::move(code), nullptr,
 590         host, kill_time,
 591         current_property_set, auto_restart, nullptr);
 592
 593     /* verify if process has been created (won't be the case if the host is currently dead, but that's fine) */
 594     if (!process_created) {
 595       return;
 596     }
 597   }
 598   current_property_set = nullptr;
 599 }
 600
 601 void sg_platf_new_peer(sg_platf_peer_cbarg_t peer)
 602 {
 603   using simgrid::kernel::routing::NetCard;
 604   using simgrid::kernel::routing::AsCluster;
 605
 606   char *host_id = bprintf("peer_%s", peer->id);
 607   char *router_id = bprintf("router_%s", peer->id);
 608
 609   XBT_DEBUG(" ");
 610
 611   XBT_DEBUG("<AS id=\"%s\"\trouting=\"Cluster\">", peer->id);
 612   s_sg_platf_AS_cbarg_t AS;
 613   AS.id      = peer->id;
 614   AS.routing = A_surfxml_AS_routing_Cluster;
 615   sg_platf_new_AS_begin(&AS);
 616
 617   XBT_DEBUG("<host\tid=\"%s\"\tpower=\"%f\"/>", host_id, peer->speed);
 618   s_sg_platf_host_cbarg_t host;
 619   memset(&host, 0, sizeof(host));
 620   host.id = host_id;
 621
 622   host.speed_per_pstate.push_back(peer->speed);
 623   host.pstate = 0;
 624   host.speed_trace = peer->availability_trace;
 625   host.state_trace = peer->state_trace;
 626   host.core_amount = 1;
 627   sg_platf_new_host(&host);
 628
 629   s_sg_platf_link_cbarg_t link;
 630   memset(&link, 0, sizeof(link));
 631   link.policy  = SURF_LINK_SHARED;
 632   link.latency = peer->lat;
 633
 634   char* link_up = bprintf("link_%s_UP",peer->id);
 635   XBT_DEBUG("<link\tid=\"%s\"\tbw=\"%f\"\tlat=\"%f\"/>", link_up, peer->bw_out, peer->lat);
 636   link.id = link_up;
 637   link.bandwidth = peer->bw_out;
 638   sg_platf_new_link(&link);
 639
 640   char* link_down = bprintf("link_%s_DOWN",peer->id);
 641   XBT_DEBUG("<link\tid=\"%s\"\tbw=\"%f\"\tlat=\"%f\"/>", link_down, peer->bw_in, peer->lat);
 642   link.id = link_down;
 643   link.bandwidth = peer->bw_in;
 644   sg_platf_new_link(&link);
 645
 646   XBT_DEBUG("<host_link\tid=\"%s\"\tup=\"%s\"\tdown=\"%s\" />", host_id,link_up,link_down);
 647   s_sg_platf_host_link_cbarg_t host_link;
 648   memset(&host_link, 0, sizeof(host_link));
 649   host_link.id        = host_id;
 650   host_link.link_up   = link_up;
 651   host_link.link_down = link_down;
 652   sg_platf_new_hostlink(&host_link);
 653   free(link_up);
 654   free(link_down);
 655
 656   XBT_DEBUG("<router id=\"%s\"/>", router_id);
 657   s_sg_platf_router_cbarg_t router;
 658   memset(&router, 0, sizeof(router));
 659   router.id = router_id;
 660   router.coord = peer->coord;
 661   sg_platf_new_router(&router);
 662
 663   XBT_DEBUG("</AS>");
 664   sg_platf_new_AS_seal();
 665   XBT_DEBUG(" ");
 666
 667   free(router_id);
 668   free(host_id);
 669 }
 670
 671 void sg_platf_begin() { /* Do nothing: just for symmetry of user code */ }
 672
 673 void sg_platf_end() {
 674   simgrid::surf::on_postparse();
 675 }
 676
 677 /* Pick the right models for CPU, net and host, and call their model_init_preparse */
 678 static void surf_config_models_setup()
 679 {
 680   const char* host_model_name    = xbt_cfg_get_string("host/model");
 681   const char* vm_model_name      = xbt_cfg_get_string("vm/model");
 682   const char* network_model_name = xbt_cfg_get_string("network/model");
 683   const char* cpu_model_name     = xbt_cfg_get_string("cpu/model");
 684   const char* storage_model_name = xbt_cfg_get_string("storage/model");
 685
 686   /* The compound host model is needed when using non-default net/cpu models */
 687   if ((!xbt_cfg_is_default_value("network/model") || !xbt_cfg_is_default_value("cpu/model")) &&
 688       xbt_cfg_is_default_value("host/model")) {
 689     host_model_name = "compound";
 690     xbt_cfg_set_string("host/model", host_model_name);
 691   }
 692
 693   XBT_DEBUG("host model: %s", host_model_name);
 694   if (!strcmp(host_model_name, "compound")) {
 695     xbt_assert(cpu_model_name, "Set a cpu model to use with the 'compound' host model");
 696     xbt_assert(network_model_name, "Set a network model to use with the 'compound' host model");
 697
 698     int cpu_id = find_model_description(surf_cpu_model_description, cpu_model_name);
 699     surf_cpu_model_description[cpu_id].model_init_preparse();
 700
 701     int network_id = find_model_description(surf_network_model_description, network_model_name);
 702     surf_network_model_description[network_id].model_init_preparse();
 703   }
 704
 705   XBT_DEBUG("Call host_model_init");
 706   int host_id = find_model_description(surf_host_model_description, host_model_name);
 707   surf_host_model_description[host_id].model_init_preparse();
 708
 709   XBT_DEBUG("Call vm_model_init");
 710   int vm_id = find_model_description(surf_vm_model_description, vm_model_name);
 711   surf_vm_model_description[vm_id].model_init_preparse();
 712
 713   XBT_DEBUG("Call storage_model_init");
 714   int storage_id = find_model_description(surf_storage_model_description, storage_model_name);
 715   surf_storage_model_description[storage_id].model_init_preparse();
 716 }
 717
 718 /**
 719  * \brief Add an AS to the platform
 720  *
 721  * Add a new autonomous system to the platform. Any elements (such as host,
 722  * router or sub-AS) added after this call and before the corresponding call
 723  * to sg_platf_new_AS_seal() will be added to this AS.
 724  *
 725  * Once this function was called, the configuration concerning the used
 726  * models cannot be changed anymore.
 727  *
 728  * @param AS the parameters defining the AS to build.
 729  */
 730 simgrid::s4u::As * sg_platf_new_AS_begin(sg_platf_AS_cbarg_t AS)
 731 {
 732   if (!surf_parse_models_setup_already_called) {
 733     /* Initialize the surf models. That must be done after we got all config, and before we need the models.
 734      * That is, after the last <config> tag, if any, and before the first of cluster|peer|AS|trace|trace_connect
 735      *
 736      * I'm not sure for <trace> and <trace_connect>, there may be a bug here
 737      * (FIXME: check it out by creating a file beginning with one of these tags)
 738      * but cluster and peer create ASes internally, so putting the code in there is ok.
 739      */
 740     surf_parse_models_setup_already_called = 1;
 741     surf_config_models_setup();
 742   }
 743
 744   _sg_cfg_init_status = 2; /* HACK: direct access to the global controlling the level of configuration to prevent
 745                             * any further config now that we created some real content */
 746
 747
 748   /* search the routing model */
 749   simgrid::kernel::routing::AsImpl *new_as = nullptr;
 750   switch(AS->routing){
 751     case A_surfxml_AS_routing_Cluster:
 752       new_as = new simgrid::kernel::routing::AsCluster(current_routing, AS->id);
 753       break;
 754     case A_surfxml_AS_routing_ClusterDragonfly:
 755       new_as = new simgrid::kernel::routing::AsClusterDragonfly(current_routing, AS->id);
 756       break;
 757     case A_surfxml_AS_routing_ClusterTorus:
 758       new_as = new simgrid::kernel::routing::AsClusterTorus(current_routing, AS->id);
 759       break;
 760     case A_surfxml_AS_routing_ClusterFatTree:
 761       new_as = new simgrid::kernel::routing::AsClusterFatTree(current_routing, AS->id);
 762       break;
 763     case A_surfxml_AS_routing_Dijkstra:
 764       new_as = new simgrid::kernel::routing::AsDijkstra(current_routing, AS->id, 0);
 765       break;
 766     case A_surfxml_AS_routing_DijkstraCache:
 767       new_as = new simgrid::kernel::routing::AsDijkstra(current_routing, AS->id, 1);
 768       break;
 769     case A_surfxml_AS_routing_Floyd:
 770       new_as = new simgrid::kernel::routing::AsFloyd(current_routing, AS->id);
 771       break;
 772     case A_surfxml_AS_routing_Full:
 773       new_as = new simgrid::kernel::routing::AsFull(current_routing, AS->id);
 774       break;
 775     case A_surfxml_AS_routing_None:
 776       new_as = new simgrid::kernel::routing::AsNone(current_routing, AS->id);
 777       break;
 778     case A_surfxml_AS_routing_Vivaldi:
 779       new_as = new simgrid::kernel::routing::AsVivaldi(current_routing, AS->id);
 780       break;
 781     default:
 782       xbt_die("Not a valid model!");
 783       break;
 784   }
 785
 786
 787   if (current_routing == nullptr && routing_platf->root_ == nullptr) { /* it is the first one */
 788     routing_platf->root_ = new_as;
 789
 790   } else if (current_routing != nullptr && routing_platf->root_ != nullptr) {
 791     /* set the father behavior */
 792     if (current_routing->hierarchy_ == simgrid::kernel::routing::AsImpl::RoutingMode::unset)
 793       current_routing->hierarchy_ = simgrid::kernel::routing::AsImpl::RoutingMode::recursive;
 794     /* add to the sons dictionary */
 795     xbt_dict_set(current_routing->children(), AS->id, (void *) new_as, nullptr);
 796
 797   } else {
 798     THROWF(arg_error, 0, "All defined components must belong to a AS");
 799   }
 800
 801   /* set the new current component of the tree */
 802   current_routing = new_as;
 803
 804   simgrid::kernel::routing::asCreatedCallbacks(new_as);
 805   if (TRACE_is_enabled())
 806     sg_instr_AS_begin(AS);
 807
 808   return new_as;
 809 }
 810
 811 /**
 812  * \brief Specify that the description of the current AS is finished
 813  *
 814  * Once you've declared all the content of your AS, you have to seal
 815  * it with this call. Your AS is not usable until you call this function.
 816  */
 817 void sg_platf_new_AS_seal()
 818 {
 819   xbt_assert(current_routing, "Cannot seal the current AS: none under construction");
 820   current_routing->seal();
 821   current_routing = static_cast<simgrid::kernel::routing::AsImpl*>(current_routing->father());
 822
 823   if (TRACE_is_enabled())
 824     sg_instr_AS_end();
 825 }
 826
 827 /** @brief Add a link connecting an host to the rest of its AS (which must be cluster or vivaldi) */
 828 void sg_platf_new_hostlink(sg_platf_host_link_cbarg_t hostlink)
 829 {
 830   simgrid::kernel::routing::NetCard *netcard = sg_host_by_name(hostlink->id)->pimpl_netcard;
 831   xbt_assert(netcard, "Host '%s' not found!", hostlink->id);
 832   xbt_assert(dynamic_cast<simgrid::kernel::routing::AsCluster*>(current_routing),
 833       "Only hosts from Cluster and Vivaldi ASes can get an host_link.");
 834
 835   s_surf_parsing_link_up_down_t link_up_down;
 836   link_up_down.linkUp = Link::byName(hostlink->link_up);
 837   link_up_down.linkDown = Link::byName(hostlink->link_down);
 838
 839   xbt_assert(link_up_down.linkUp, "Link '%s' not found!",hostlink->link_up);
 840   xbt_assert(link_up_down.linkDown, "Link '%s' not found!",hostlink->link_down);
 841
 842   auto as_cluster = static_cast<simgrid::kernel::routing::AsCluster*>(current_routing);
 843
 844   if (as_cluster->privateLinks_.find(netcard->id()) != as_cluster->privateLinks_.end())
 845     surf_parse_error("Host_link for '%s' is already defined!",hostlink->id);
 846
 847   XBT_DEBUG("Push Host_link for host '%s' to position %d", netcard->name(), netcard->id());
 848   as_cluster->privateLinks_.insert({netcard->id(), link_up_down});
 849 }