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/signal.hpp>
  13 #include "src/surf/HostImpl.hpp"
  14 #include "surf/surf.h"
  15
  16 #include "src/simix/smx_private.h"
  17
  18 #include "src/include/simgrid/sg_config.h"
  19 #include "src/surf/xml/platf_private.hpp"
  20
  21 #include "src/surf/cpu_interface.hpp"
  22 #include "src/surf/network_interface.hpp"
  23 #include "surf/surf_routing.h" // FIXME: brain dead public header
  24 #include "src/surf/surf_routing_cluster.hpp"
  25 #include "src/surf/surf_routing_cluster_torus.hpp"
  26 #include "src/surf/surf_routing_cluster_fat_tree.hpp"
  27
  28 XBT_LOG_EXTERNAL_DEFAULT_CATEGORY(surf_parse);
  29
  30 XBT_PRIVATE xbt_dynar_t mount_list = NULL;
  31
  32 namespace simgrid {
  33 namespace surf {
  34
  35 simgrid::xbt::signal<void(sg_platf_link_cbarg_t)> on_link;
  36 simgrid::xbt::signal<void(sg_platf_cluster_cbarg_t)> on_cluster;
  37 simgrid::xbt::signal<void(void)> on_postparse;
  38
  39 }
  40 }
  41
  42 static int surf_parse_models_setup_already_called = 0;
  43
  44 /** Module management function: creates all internal data structures */
  45 void sg_platf_init(void) {
  46 }
  47
  48 /** Module management function: frees all internal data structures */
  49 void sg_platf_exit(void) {
  50   simgrid::surf::on_link.disconnect_all_slots();
  51   simgrid::surf::on_cluster.disconnect_all_slots();
  52   simgrid::surf::on_postparse.disconnect_all_slots();
  53
  54   /* make sure that we will reinit the models while loading the platf once reinited */
  55   surf_parse_models_setup_already_called = 0;
  56   surf_parse_lex_destroy();
  57 }
  58
  59 /** @brief Add an "host" to the current AS */
  60 void sg_platf_new_host(sg_platf_host_cbarg_t host)
  61 {
  62   xbt_assert(! sg_host_by_name(host->id),
  63       "Refusing to create a second host named '%s'.", host->id);
  64
  65   simgrid::s4u::As* current_routing = routing_get_current();
  66   if (current_routing->hierarchy_ == simgrid::s4u::As::ROUTING_NULL)
  67     current_routing->hierarchy_ = simgrid::s4u::As::ROUTING_BASE;
  68
  69   simgrid::surf::NetCard *netcard =
  70       new simgrid::surf::NetCardImpl(host->id, SURF_NETWORK_ELEMENT_HOST, current_routing);
  71
  72   netcard->setId(current_routing->addComponent(netcard));
  73   sg_host_t h = simgrid::s4u::Host::by_name_or_create(host->id);
  74   h->pimpl_netcard = netcard;
  75   simgrid::surf::netcardCreatedCallbacks(netcard);
  76
  77   if(mount_list){
  78     xbt_lib_set(storage_lib, host->id, ROUTING_STORAGE_HOST_LEVEL, (void *) mount_list);
  79     mount_list = NULL;
  80   }
  81
  82   if (host->coord && strcmp(host->coord, "")) {
  83     unsigned int cursor;
  84     char*str;
  85
  86     if (!COORD_HOST_LEVEL)
  87       xbt_die ("To use host coordinates, please add --cfg=network/coordinates:yes to your command line");
  88     /* Pre-parse the host coordinates -- FIXME factorize with routers by overloading the routing->parse_PU function*/
  89     xbt_dynar_t ctn_str = xbt_str_split_str(host->coord, " ");
  90     xbt_dynar_t ctn = xbt_dynar_new(sizeof(double),NULL);
  91     xbt_dynar_foreach(ctn_str,cursor, str) {
  92       double val = xbt_str_parse_double(str, "Invalid coordinate: %s");
  93       xbt_dynar_push(ctn,&val);
  94     }
  95     xbt_dynar_shrink(ctn, 0);
  96     xbt_dynar_free(&ctn_str);
  97     h->extension_set(COORD_HOST_LEVEL, (void *) ctn);
  98     XBT_DEBUG("Having set host coordinates for '%s'",host->id);
  99   }
 100
 101
 102   simgrid::surf::Cpu *cpu = surf_cpu_model_pm->createCpu( h,
 103       host->speed_peak,
 104       host->speed_trace,
 105       host->core_amount,
 106       host->state_trace);
 107   surf_host_model->createHost(host->id, netcard, cpu, host->properties)->attach(h);
 108
 109   if (host->pstate != 0)
 110     cpu->setPState(host->pstate);
 111
 112   simgrid::s4u::Host::onCreation(*h);
 113
 114   if (TRACE_is_enabled() && TRACE_needs_platform())
 115     sg_instr_new_host(host);
 116 }
 117
 118 /**
 119  * \brief Add a "router" to the network element list
 120  */
 121 void sg_platf_new_router(sg_platf_router_cbarg_t router)
 122 {
 123   simgrid::s4u::As* current_routing = routing_get_current();
 124
 125   if (current_routing->hierarchy_ == simgrid::s4u::As::ROUTING_NULL)
 126     current_routing->hierarchy_ = simgrid::s4u::As::ROUTING_BASE;
 127   xbt_assert(nullptr == xbt_lib_get_or_null(as_router_lib, router->id, ROUTING_ASR_LEVEL),
 128              "Refusing to create a router named '%s': this name already describes a node.", router->id);
 129
 130   simgrid::surf::NetCard *netcard = new simgrid::surf::NetCardImpl(router->id, SURF_NETWORK_ELEMENT_ROUTER, current_routing);
 131   netcard->setId(current_routing->addComponent(netcard));
 132   xbt_lib_set(as_router_lib, router->id, ROUTING_ASR_LEVEL, (void *) netcard);
 133   XBT_DEBUG("Having set name '%s' id '%d'", router->id, netcard->id());
 134   simgrid::surf::netcardCreatedCallbacks(netcard);
 135
 136   if (router->coord && strcmp(router->coord, "")) {
 137     unsigned int cursor;
 138     char*str;
 139
 140     if (!COORD_ASR_LEVEL)
 141       xbt_die ("To use host coordinates, please add --cfg=network/coordinates:yes to your command line");
 142     /* Pre-parse the host coordinates */
 143     xbt_dynar_t ctn_str = xbt_str_split_str(router->coord, " ");
 144     xbt_dynar_t ctn = xbt_dynar_new(sizeof(double),NULL);
 145     xbt_dynar_foreach(ctn_str,cursor, str) {
 146       double val = xbt_str_parse_double(str, "Invalid coordinate: %s");
 147       xbt_dynar_push(ctn,&val);
 148     }
 149     xbt_dynar_shrink(ctn, 0);
 150     xbt_dynar_free(&ctn_str);
 151     xbt_lib_set(as_router_lib, router->id, COORD_ASR_LEVEL, (void *) ctn);
 152     XBT_DEBUG("Having set router coordinates for '%s'",router->id);
 153   }
 154
 155   if (TRACE_is_enabled() && TRACE_needs_platform())
 156     sg_instr_new_router(router);
 157 }
 158
 159 void sg_platf_new_link(sg_platf_link_cbarg_t link){
 160   simgrid::surf::on_link(link);
 161 }
 162
 163 void sg_platf_new_cluster(sg_platf_cluster_cbarg_t cluster)
 164 {
 165   using simgrid::surf::AsCluster;
 166   using simgrid::surf::AsClusterTorus;
 167   using simgrid::surf::AsClusterFatTree;
 168
 169   char *host_id, *groups, *link_id = NULL;
 170   xbt_dict_t patterns = NULL;
 171   int rankId=0;
 172
 173   s_sg_platf_host_cbarg_t host = SG_PLATF_HOST_INITIALIZER;
 174   s_sg_platf_link_cbarg_t link = SG_PLATF_LINK_INITIALIZER;
 175
 176   unsigned int iter;
 177
 178   if ((cluster->availability_trace && strcmp(cluster->availability_trace, ""))
 179       || (cluster->state_trace && strcmp(cluster->state_trace, ""))) {
 180     patterns = xbt_dict_new_homogeneous(xbt_free_f);
 181     xbt_dict_set(patterns, "id", xbt_strdup(cluster->id), NULL);
 182     xbt_dict_set(patterns, "prefix", xbt_strdup(cluster->prefix), NULL);
 183     xbt_dict_set(patterns, "suffix", xbt_strdup(cluster->suffix), NULL);
 184   }
 185
 186   /* Parse the topology attributes.
 187    * Nothing to do in a vanilla cluster, but that's another story for torus and flat_trees */
 188   s_sg_platf_AS_cbarg_t AS = SG_PLATF_AS_INITIALIZER;
 189   AS.id = cluster->id;
 190
 191   switch (cluster->topology) {
 192   case SURF_CLUSTER_TORUS:
 193     AS.routing = A_surfxml_AS_routing_ClusterTorus;
 194     break;
 195   case SURF_CLUSTER_FAT_TREE:
 196     AS.routing = A_surfxml_AS_routing_ClusterFatTree;
 197     break;
 198   default:
 199     AS.routing = A_surfxml_AS_routing_Cluster;
 200     break;
 201   }
 202
 203   // What an inventive way of initializing the AS that I have as ancestor :-(
 204   sg_platf_new_AS_begin(&AS);
 205   simgrid::s4u::As *current_routing = routing_get_current();
 206   static_cast<AsCluster*>(current_routing)->parse_specific_arguments(cluster);
 207
 208   if(cluster->loopback_bw!=0 || cluster->loopback_lat!=0){
 209       ((AsCluster*)current_routing)->nb_links_per_node_++;
 210       ((AsCluster*)current_routing)->has_loopback_=1;
 211   }
 212
 213   if(cluster->limiter_link!=0){
 214       ((AsCluster*)current_routing)->nb_links_per_node_++;
 215       ((AsCluster*)current_routing)->has_limiter_=1;
 216   }
 217
 218
 219   //Make all hosts
 220   xbt_dynar_t radical_elements = xbt_str_split(cluster->radical, ",");
 221   xbt_dynar_foreach(radical_elements, iter, groups) {
 222
 223     xbt_dynar_t radical_ends = xbt_str_split(groups, "-");
 224     int start = surf_parse_get_int(xbt_dynar_get_as(radical_ends, 0, char *));
 225     int end;
 226
 227     switch (xbt_dynar_length(radical_ends)) {
 228     case 1:
 229       end = start;
 230       break;
 231     case 2:
 232       end = surf_parse_get_int(xbt_dynar_get_as(radical_ends, 1, char *));
 233       break;
 234     default:
 235       surf_parse_error("Malformed radical");
 236       break;
 237     }
 238     for (int i = start; i <= end; i++) {
 239       host_id = bprintf("%s%d%s", cluster->prefix, i, cluster->suffix);
 240       link_id = bprintf("%s_link_%d", cluster->id, i);
 241
 242       XBT_DEBUG("<host\tid=\"%s\"\tpower=\"%f\">", host_id, cluster->speed);
 243
 244       memset(&host, 0, sizeof(host));
 245       host.id = host_id;
 246       if ((cluster->properties != NULL) && (!xbt_dict_is_empty(cluster->properties))) {
 247         xbt_dict_cursor_t cursor=NULL;
 248         char *key,*data;
 249         host.properties = xbt_dict_new();
 250
 251         xbt_dict_foreach(cluster->properties,cursor,key,data) {
 252           xbt_dict_set(host.properties, key, xbt_strdup(data),free);
 253         }
 254       }
 255       if (cluster->availability_trace && strcmp(cluster->availability_trace, "")) {
 256         xbt_dict_set(patterns, "radical", bprintf("%d", i), NULL);
 257         char *avail_file = xbt_str_varsubst(cluster->availability_trace, patterns);
 258         XBT_DEBUG("\tavailability_file=\"%s\"", avail_file);
 259         host.speed_trace = tmgr_trace_new_from_file(avail_file);
 260         xbt_free(avail_file);
 261       } else {
 262         XBT_DEBUG("\tavailability_file=\"\"");
 263       }
 264
 265       if (cluster->state_trace && strcmp(cluster->state_trace, "")) {
 266         char *avail_file = xbt_str_varsubst(cluster->state_trace, patterns);
 267         XBT_DEBUG("\tstate_file=\"%s\"", avail_file);
 268         host.state_trace = tmgr_trace_new_from_file(avail_file);
 269         xbt_free(avail_file);
 270       } else {
 271         XBT_DEBUG("\tstate_file=\"\"");
 272       }
 273
 274       host.speed_peak = xbt_dynar_new(sizeof(double), NULL);
 275       xbt_dynar_push(host.speed_peak,&cluster->speed);
 276       host.pstate = 0;
 277
 278       //host.power_peak = cluster->power;
 279       host.core_amount = cluster->core_amount;
 280       host.coord = "";
 281       sg_platf_new_host(&host);
 282       xbt_dynar_free(&host.speed_peak);
 283       XBT_DEBUG("</host>");
 284
 285       XBT_DEBUG("<link\tid=\"%s\"\tbw=\"%f\"\tlat=\"%f\"/>", link_id,
 286                 cluster->bw, cluster->lat);
 287
 288
 289       s_surf_parsing_link_up_down_t info_lim, info_loop;
 290       // All links are saved in a matrix;
 291       // every row describes a single node; every node
 292       // may have multiple links.
 293       // the first column may store a link from x to x if p_has_loopback is set
 294       // the second column may store a limiter link if p_has_limiter is set
 295       // other columns are to store one or more link for the node
 296
 297       //add a loopback link
 298       if(cluster->loopback_bw!=0 || cluster->loopback_lat!=0){
 299         char *tmp_link = bprintf("%s_loopback", link_id);
 300         XBT_DEBUG("<loopback\tid=\"%s\"\tbw=\"%f\"/>", tmp_link,
 301                 cluster->limiter_link);
 302
 303
 304         memset(&link, 0, sizeof(link));
 305         link.id        = tmp_link;
 306         link.bandwidth = cluster->loopback_bw;
 307         link.latency   = cluster->loopback_lat;
 308         link.policy    = SURF_LINK_FATPIPE;
 309         sg_platf_new_link(&link);
 310         info_loop.link_up   = Link::byName(tmp_link);
 311         info_loop.link_down = info_loop.link_up;
 312         free(tmp_link);
 313         xbt_dynar_set(current_routing->upDownLinks, rankId*(static_cast<AsCluster*>(current_routing))->nb_links_per_node_, &info_loop);
 314       }
 315
 316       //add a limiter link (shared link to account for maximal bandwidth of the node)
 317       if(cluster->limiter_link!=0){
 318         char *tmp_link = bprintf("%s_limiter", link_id);
 319         XBT_DEBUG("<limiter\tid=\"%s\"\tbw=\"%f\"/>", tmp_link,
 320                 cluster->limiter_link);
 321
 322
 323         memset(&link, 0, sizeof(link));
 324         link.id = tmp_link;
 325         link.bandwidth = cluster->limiter_link;
 326         link.latency = 0;
 327         link.policy = SURF_LINK_SHARED;
 328         sg_platf_new_link(&link);
 329         info_lim.link_up = Link::byName(tmp_link);
 330         info_lim.link_down = info_lim.link_up;
 331         free(tmp_link);
 332         auto as_cluster = static_cast<AsCluster*>(current_routing);
 333         xbt_dynar_set(current_routing->upDownLinks, rankId*(as_cluster)->nb_links_per_node_ + as_cluster->has_loopback_ , &info_lim);
 334
 335       }
 336
 337
 338       //call the cluster function that adds the others links
 339       if (cluster->topology == SURF_CLUSTER_FAT_TREE) {
 340         ((AsClusterFatTree*) current_routing)->addProcessingNode(i);
 341       }
 342       else {
 343       static_cast<AsCluster*>(current_routing)->create_links_for_node(cluster, i, rankId, rankId*
 344           static_cast<AsCluster*>(current_routing)->nb_links_per_node_
 345           + static_cast<AsCluster*>(current_routing)->has_loopback_
 346           + static_cast<AsCluster*>(current_routing)->has_limiter_ );
 347       }
 348       xbt_free(link_id);
 349       xbt_free(host_id);
 350       rankId++;
 351     }
 352
 353     xbt_dynar_free(&radical_ends);
 354   }
 355   xbt_dynar_free(&radical_elements);
 356
 357   // For fat trees, the links must be created once all nodes have been added
 358   if(cluster->topology == SURF_CLUSTER_FAT_TREE) {
 359     static_cast<simgrid::surf::AsClusterFatTree*>(current_routing)->create_links();
 360   }
 361   // Add a router. It is magically used thanks to the way in which surf_routing_cluster is written,
 362   // and it's very useful to connect clusters together
 363   XBT_DEBUG(" ");
 364   XBT_DEBUG("<router id=\"%s\"/>", cluster->router_id);
 365   char *newid = NULL;
 366   s_sg_platf_router_cbarg_t router = SG_PLATF_ROUTER_INITIALIZER;
 367   memset(&router, 0, sizeof(router));
 368   router.id = cluster->router_id;
 369   router.coord = "";
 370   if (!router.id || !strcmp(router.id, ""))
 371     router.id = newid =
 372         bprintf("%s%s_router%s", cluster->prefix, cluster->id,
 373                 cluster->suffix);
 374   sg_platf_new_router(&router);
 375   ((AsCluster*)current_routing)->router_ = (simgrid::surf::NetCard*) xbt_lib_get_or_null(as_router_lib, router.id, ROUTING_ASR_LEVEL);
 376   free(newid);
 377
 378   //Make the backbone
 379   if ((cluster->bb_bw != 0) || (cluster->bb_lat != 0)) {
 380     char *link_backbone = bprintf("%s_backbone", cluster->id);
 381     XBT_DEBUG("<link\tid=\"%s\" bw=\"%f\" lat=\"%f\"/>", link_backbone,
 382               cluster->bb_bw, cluster->bb_lat);
 383
 384     memset(&link, 0, sizeof(link));
 385     link.id        = link_backbone;
 386     link.bandwidth = cluster->bb_bw;
 387     link.latency   = cluster->bb_lat;
 388     link.policy    = cluster->bb_sharing_policy;
 389
 390     sg_platf_new_link(&link);
 391
 392     routing_cluster_add_backbone(Link::byName(link_backbone));
 393
 394     free(link_backbone);
 395   }
 396
 397   XBT_DEBUG("</AS>");
 398   sg_platf_new_AS_end();
 399   XBT_DEBUG(" ");
 400   xbt_dict_free(&patterns); // no op if it were never set
 401
 402   simgrid::surf::on_cluster(cluster);
 403 }
 404
 405 void sg_platf_new_storage(sg_platf_storage_cbarg_t storage)
 406 {
 407   xbt_assert(!xbt_lib_get_or_null(storage_lib, storage->id,ROUTING_STORAGE_LEVEL),
 408                "Refusing to add a second storage named \"%s\"", storage->id);
 409
 410   void* stype = xbt_lib_get_or_null(storage_type_lib, storage->type_id,ROUTING_STORAGE_TYPE_LEVEL);
 411   xbt_assert(stype,"No storage type '%s'", storage->type_id);
 412
 413   XBT_DEBUG("ROUTING Create a storage name '%s' with type_id '%s' and content '%s'",
 414       storage->id,
 415       storage->type_id,
 416       storage->content);
 417
 418   xbt_lib_set(storage_lib, storage->id, ROUTING_STORAGE_LEVEL, (void *) xbt_strdup(storage->type_id));
 419
 420   // if storage content is not specified use the content of storage_type if any
 421   if(!strcmp(storage->content,"") && strcmp(((storage_type_t) stype)->content,"")){
 422     storage->content = ((storage_type_t) stype)->content;
 423     storage->content_type = ((storage_type_t) stype)->content_type;
 424     XBT_DEBUG("For disk '%s' content is empty, inherit the content (of type %s) from storage type '%s' ",
 425         storage->id,((storage_type_t) stype)->content_type,
 426         ((storage_type_t) stype)->type_id);
 427   }
 428
 429   XBT_DEBUG("SURF storage create resource\n\t\tid '%s'\n\t\ttype '%s' "
 430       "\n\t\tmodel '%s' \n\t\tcontent '%s'\n\t\tcontent_type '%s' "
 431       "\n\t\tproperties '%p''\n",
 432       storage->id,
 433       ((storage_type_t) stype)->model,
 434       ((storage_type_t) stype)->type_id,
 435       storage->content,
 436       storage->content_type,
 437     storage->properties);
 438
 439   surf_storage_model->createStorage(storage->id,
 440                                      ((storage_type_t) stype)->type_id,
 441                                      storage->content,
 442                                      storage->content_type,
 443                    storage->properties,
 444                                      storage->attach);
 445 }
 446 void sg_platf_new_storage_type(sg_platf_storage_type_cbarg_t storage_type){
 447
 448   xbt_assert(!xbt_lib_get_or_null(storage_type_lib, storage_type->id,ROUTING_STORAGE_TYPE_LEVEL),
 449                "Reading a storage type, processing unit \"%s\" already exists", storage_type->id);
 450
 451   storage_type_t stype = xbt_new0(s_storage_type_t, 1);
 452   stype->model = xbt_strdup(storage_type->model);
 453   stype->properties = storage_type->properties;
 454   stype->content = xbt_strdup(storage_type->content);
 455   stype->content_type = xbt_strdup(storage_type->content_type);
 456   stype->type_id = xbt_strdup(storage_type->id);
 457   stype->size = storage_type->size;
 458   stype->model_properties = storage_type->model_properties;
 459
 460   XBT_DEBUG("ROUTING Create a storage type id '%s' with model '%s', "
 461       "content '%s', and content_type '%s'",
 462       stype->type_id,
 463       stype->model,
 464       storage_type->content,
 465       storage_type->content_type);
 466
 467   xbt_lib_set(storage_type_lib,
 468       stype->type_id,
 469       ROUTING_STORAGE_TYPE_LEVEL,
 470       (void *) stype);
 471 }
 472 void sg_platf_new_mstorage(sg_platf_mstorage_cbarg_t mstorage)
 473 {
 474   THROW_UNIMPLEMENTED;
 475 }
 476
 477 static void mount_free(void *p)
 478 {
 479   mount_t mnt = (mount_t) p;
 480   xbt_free(mnt->name);
 481 }
 482
 483 void sg_platf_new_mount(sg_platf_mount_cbarg_t mount){
 484   // Verification of an existing storage
 485   xbt_assert(xbt_lib_get_or_null(storage_lib, mount->storageId, ROUTING_STORAGE_LEVEL),
 486       "Cannot mount non-existent disk \"%s\"", mount->storageId);
 487
 488   XBT_DEBUG("ROUTING Mount '%s' on '%s'",mount->storageId, mount->name);
 489
 490   s_mount_t mnt;
 491   mnt.storage = surf_storage_resource_priv(surf_storage_resource_by_name(mount->storageId));
 492   mnt.name = xbt_strdup(mount->name);
 493
 494   if(!mount_list){
 495     XBT_DEBUG("Create a Mount list for %s",A_surfxml_host_id);
 496     mount_list = xbt_dynar_new(sizeof(s_mount_t), mount_free);
 497   }
 498   xbt_dynar_push(mount_list, &mnt);
 499 }
 500
 501 void sg_platf_new_route(sg_platf_route_cbarg_t route)
 502 {
 503   routing_get_current()->addRoute(route);
 504 }
 505
 506 void sg_platf_new_bypassRoute(sg_platf_route_cbarg_t bypassRoute)
 507 {
 508   routing_get_current()->addBypassRoute(bypassRoute);
 509 }
 510
 511 void sg_platf_new_process(sg_platf_process_cbarg_t process)
 512 {
 513   xbt_assert(simix_global,"Cannot create process without SIMIX.");
 514
 515   sg_host_t host = sg_host_by_name(process->host);
 516   if (!host) {
 517     // The requested host does not exist. Do a nice message to the user
 518     char *tmp = bprintf("Cannot create process '%s': host '%s' does not exist\nExisting hosts: '",process->function, process->host);
 519     xbt_strbuff_t msg = xbt_strbuff_new_from(tmp);
 520     free(tmp);
 521     xbt_dynar_t all_hosts = xbt_dynar_sort_strings(sg_hosts_as_dynar());
 522     simgrid::s4u::Host* host;
 523     unsigned int cursor;
 524     xbt_dynar_foreach(all_hosts,cursor, host) {
 525       xbt_strbuff_append(msg,host->name().c_str());
 526       xbt_strbuff_append(msg,"', '");
 527       if (msg->used > 1024) {
 528         msg->data[msg->used-3]='\0';
 529         msg->used -= 3;
 530
 531         xbt_strbuff_append(msg," ...(list truncated)......");// That will be shortened by 3 chars when existing the loop
 532       }
 533     }
 534     msg->data[msg->used-3]='\0';
 535     xbt_die("%s", msg->data);
 536   }
 537   xbt_main_func_t parse_code = SIMIX_get_registered_function(process->function);
 538   xbt_assert(parse_code, "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   smx_process_arg_t arg = NULL;
 545   smx_process_t process_created = NULL;
 546
 547   arg = xbt_new0(s_smx_process_arg_t, 1);
 548   arg->code = parse_code;
 549   arg->data = NULL;
 550   arg->hostname = sg_host_get_name(host);
 551   arg->argc = process->argc;
 552   arg->argv = xbt_new(char *,process->argc);
 553   int i;
 554   for (i=0; i<process->argc; i++)
 555     arg->argv[i] = xbt_strdup(process->argv[i]);
 556   arg->name = xbt_strdup(arg->argv[0]);
 557   arg->kill_time = kill_time;
 558   arg->properties = current_property_set;
 559   if (!sg_host_simix(host)->boot_processes) {
 560     sg_host_simix(host)->boot_processes = xbt_dynar_new(sizeof(smx_process_arg_t), _SIMIX_host_free_process_arg);
 561   }
 562   xbt_dynar_push_as(sg_host_simix(host)->boot_processes,smx_process_arg_t,arg);
 563
 564   if (start_time > SIMIX_get_clock()) {
 565     arg = xbt_new0(s_smx_process_arg_t, 1);
 566     arg->name = (char*)(process->argv)[0];
 567     arg->code = parse_code;
 568     arg->data = NULL;
 569     arg->hostname = sg_host_get_name(host);
 570     arg->argc = process->argc;
 571     arg->argv = (char**)(process->argv);
 572     arg->kill_time = kill_time;
 573     arg->properties = current_property_set;
 574
 575     XBT_DEBUG("Process %s(%s) will be started at time %f", arg->name,
 576            arg->hostname, start_time);
 577     SIMIX_timer_set(start_time, [](void* arg) {
 578       SIMIX_process_create_from_wrapper((smx_process_arg_t) arg);
 579     }, arg);
 580   } else {                      // start_time <= SIMIX_get_clock()
 581     XBT_DEBUG("Starting Process %s(%s) right now", arg->name, sg_host_get_name(host));
 582
 583     if (simix_global->create_process_function)
 584       process_created = simix_global->create_process_function(
 585           arg->name,
 586                                             parse_code,
 587                                             NULL,
 588                                             sg_host_get_name(host),
 589                                             kill_time,
 590                                             process->argc,
 591                                             (char**)(process->argv),
 592                                             current_property_set,
 593                                             auto_restart, NULL);
 594     else
 595       process_created = simcall_process_create(arg->name, parse_code, NULL, sg_host_get_name(host), kill_time, process->argc,
 596           (char**)process->argv, current_property_set,auto_restart);
 597
 598     /* verify if process has been created (won't be the case if the host is currently dead, but that's fine) */
 599     if (!process_created) {
 600       return;
 601     }
 602   }
 603   current_property_set = NULL;
 604 }
 605
 606 void sg_platf_begin() { /* Do nothing: just for symmetry of user code */ }
 607
 608 void sg_platf_end() {
 609   simgrid::surf::on_postparse();
 610 }
 611
 612 /* Pick the right models for CPU, net and host, and call their model_init_preparse */
 613 static void surf_config_models_setup()
 614 {
 615   const char *host_model_name;
 616   const char *vm_model_name;
 617   int host_id = -1;
 618   int vm_id = -1;
 619   char *network_model_name = NULL;
 620   char *cpu_model_name = NULL;
 621   int storage_id = -1;
 622   char *storage_model_name = NULL;
 623
 624   host_model_name = xbt_cfg_get_string(_sg_cfg_set, "host/model");
 625   vm_model_name = xbt_cfg_get_string(_sg_cfg_set, "vm/model");
 626   network_model_name = xbt_cfg_get_string(_sg_cfg_set, "network/model");
 627   cpu_model_name = xbt_cfg_get_string(_sg_cfg_set, "cpu/model");
 628   storage_model_name = xbt_cfg_get_string(_sg_cfg_set, "storage/model");
 629
 630   /* Check whether we use a net/cpu model differing from the default ones, in which case
 631    * we should switch to the "compound" host model to correctly dispatch stuff to
 632    * the right net/cpu models.
 633    */
 634
 635   if ((!xbt_cfg_is_default_value(_sg_cfg_set, "network/model") ||
 636        !xbt_cfg_is_default_value(_sg_cfg_set, "cpu/model")) &&
 637       xbt_cfg_is_default_value(_sg_cfg_set, "host/model")) {
 638     host_model_name = "compound";
 639     xbt_cfg_set_string(_sg_cfg_set, "host/model", host_model_name);
 640   }
 641
 642   XBT_DEBUG("host model: %s", host_model_name);
 643   host_id = find_model_description(surf_host_model_description, host_model_name);
 644   if (!strcmp(host_model_name, "compound")) {
 645     int network_id = -1;
 646     int cpu_id = -1;
 647
 648     xbt_assert(cpu_model_name,
 649                 "Set a cpu model to use with the 'compound' host model");
 650
 651     xbt_assert(network_model_name,
 652                 "Set a network model to use with the 'compound' host model");
 653
 654     if(surf_cpu_model_init_preparse){
 655       surf_cpu_model_init_preparse();
 656     } else {
 657       cpu_id =
 658           find_model_description(surf_cpu_model_description, cpu_model_name);
 659       surf_cpu_model_description[cpu_id].model_init_preparse();
 660     }
 661
 662     network_id =
 663         find_model_description(surf_network_model_description,
 664                                network_model_name);
 665     surf_network_model_description[network_id].model_init_preparse();
 666   }
 667
 668   XBT_DEBUG("Call host_model_init");
 669   surf_host_model_description[host_id].model_init_preparse();
 670
 671   XBT_DEBUG("Call vm_model_init");
 672   vm_id = find_model_description(surf_vm_model_description, vm_model_name);
 673   surf_vm_model_description[vm_id].model_init_preparse();
 674
 675   XBT_DEBUG("Call storage_model_init");
 676   storage_id = find_model_description(surf_storage_model_description, storage_model_name);
 677   surf_storage_model_description[storage_id].model_init_preparse();
 678
 679 }
 680
 681 void sg_platf_new_AS_begin(sg_platf_AS_cbarg_t AS)
 682 {
 683   if (!surf_parse_models_setup_already_called) {
 684     /* Initialize the surf models. That must be done after we got all config, and before we need the models.
 685      * That is, after the last <config> tag, if any, and before the first of cluster|peer|AS|trace|trace_connect
 686      *
 687      * I'm not sure for <trace> and <trace_connect>, there may be a bug here
 688      * (FIXME: check it out by creating a file beginning with one of these tags)
 689      * but cluster and peer create ASes internally, so putting the code in there is ok.
 690      *
 691      * TODO, There used to be a guard protecting here against
 692      * xbt_dynar_length(sg_platf_AS_begin_cb_list) because we don't want to
 693      * initialize the models if we are parsing the file to get the deployment.
 694      * That could happen if the same file would be used for platf and deploy:
 695      * it'd contain AS tags even during the deploy parsing. Removing that guard
 696      * would result of the models to get re-inited when parsing for deploy.
 697      * Currently using the same file for platform and deployment is broken
 698      * however. This guard will have to ba adapted in order to make this feature
 699      * work again.
 700      */
 701     surf_parse_models_setup_already_called = 1;
 702     surf_config_models_setup();
 703   }
 704
 705   routing_AS_begin(AS);
 706   if (TRACE_is_enabled())
 707     sg_instr_AS_begin(AS);
 708 }
 709
 710 void sg_platf_new_AS_end()
 711 {
 712   routing_AS_end();
 713   if (TRACE_is_enabled())
 714     sg_instr_AS_end();
 715 }