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 "surf/surf.h"
  14
  15 #include "src/simix/smx_private.h"
  16
  17 #include "src/include/simgrid/sg_config.h"
  18 #include "src/surf/xml/platf_private.hpp"
  19
  20 #include "src/surf/cpu_interface.hpp"
  21 #include "src/surf/host_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::surf::As* current_routing = routing_get_current();
  66   if (current_routing->hierarchy_ == SURF_ROUTING_NULL)
  67     current_routing->hierarchy_ = SURF_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->pstate,
 105       host->speed_scale, host->speed_trace,
 106       host->core_amount,
 107       host->initiallyOn, host->state_trace);
 108   surf_host_model->createHost(host->id, netcard, cpu, host->properties)->attach(h);
 109   simgrid::s4u::Host::onCreation(*h);
 110
 111   if (TRACE_is_enabled() && TRACE_needs_platform())
 112     sg_instr_new_host(host);
 113 }
 114
 115 /**
 116  * \brief Add a "router" to the network element list
 117  */
 118 void sg_platf_new_router(sg_platf_router_cbarg_t router)
 119 {
 120   simgrid::surf::As* current_routing = routing_get_current();
 121
 122   if (current_routing->hierarchy_ == SURF_ROUTING_NULL)
 123     current_routing->hierarchy_ = SURF_ROUTING_BASE;
 124   xbt_assert(nullptr == xbt_lib_get_or_null(as_router_lib, router->id, ROUTING_ASR_LEVEL),
 125              "Refusing to create a router named '%s': this name already describes a node.", router->id);
 126
 127   simgrid::surf::NetCard *netcard = new simgrid::surf::NetCardImpl(router->id, SURF_NETWORK_ELEMENT_ROUTER, current_routing);
 128   netcard->setId(current_routing->addComponent(netcard));
 129   xbt_lib_set(as_router_lib, router->id, ROUTING_ASR_LEVEL, (void *) netcard);
 130   XBT_DEBUG("Having set name '%s' id '%d'", router->id, netcard->id());
 131   simgrid::surf::netcardCreatedCallbacks(netcard);
 132
 133   if (router->coord && strcmp(router->coord, "")) {
 134     unsigned int cursor;
 135     char*str;
 136
 137     if (!COORD_ASR_LEVEL)
 138       xbt_die ("To use host coordinates, please add --cfg=network/coordinates:yes to your command line");
 139     /* Pre-parse the host coordinates */
 140     xbt_dynar_t ctn_str = xbt_str_split_str(router->coord, " ");
 141     xbt_dynar_t ctn = xbt_dynar_new(sizeof(double),NULL);
 142     xbt_dynar_foreach(ctn_str,cursor, str) {
 143       double val = xbt_str_parse_double(str, "Invalid coordinate: %s");
 144       xbt_dynar_push(ctn,&val);
 145     }
 146     xbt_dynar_shrink(ctn, 0);
 147     xbt_dynar_free(&ctn_str);
 148     xbt_lib_set(as_router_lib, router->id, COORD_ASR_LEVEL, (void *) ctn);
 149     XBT_DEBUG("Having set router coordinates for '%s'",router->id);
 150   }
 151
 152   if (TRACE_is_enabled() && TRACE_needs_platform())
 153     sg_instr_new_router(router);
 154 }
 155
 156 void sg_platf_new_link(sg_platf_link_cbarg_t link){
 157   simgrid::surf::on_link(link);
 158 }
 159
 160 void sg_platf_new_cluster(sg_platf_cluster_cbarg_t cluster)
 161 {
 162   using simgrid::surf::AsCluster;
 163   using simgrid::surf::AsClusterTorus;
 164   using simgrid::surf::AsClusterFatTree;
 165
 166   char *host_id, *groups, *link_id = NULL;
 167   xbt_dict_t patterns = NULL;
 168   int rankId=0;
 169
 170   s_sg_platf_host_cbarg_t host = SG_PLATF_HOST_INITIALIZER;
 171   s_sg_platf_link_cbarg_t link = SG_PLATF_LINK_INITIALIZER;
 172
 173   unsigned int iter;
 174
 175   if ((cluster->availability_trace && strcmp(cluster->availability_trace, ""))
 176       || (cluster->state_trace && strcmp(cluster->state_trace, ""))) {
 177     patterns = xbt_dict_new_homogeneous(xbt_free_f);
 178     xbt_dict_set(patterns, "id", xbt_strdup(cluster->id), NULL);
 179     xbt_dict_set(patterns, "prefix", xbt_strdup(cluster->prefix), NULL);
 180     xbt_dict_set(patterns, "suffix", xbt_strdup(cluster->suffix), NULL);
 181   }
 182
 183   /* Parse the topology attributes.
 184    * Nothing to do in a vanilla cluster, but that's another story for torus and flat_trees */
 185   s_sg_platf_AS_cbarg_t AS = SG_PLATF_AS_INITIALIZER;
 186   AS.id = cluster->id;
 187
 188   switch (cluster->topology) {
 189   case SURF_CLUSTER_TORUS:
 190     AS.routing = A_surfxml_AS_routing_ClusterTorus;
 191     break;
 192   case SURF_CLUSTER_FAT_TREE:
 193     AS.routing = A_surfxml_AS_routing_ClusterFatTree;
 194     break;
 195   default:
 196     AS.routing = A_surfxml_AS_routing_Cluster;
 197     break;
 198   }
 199
 200   // What an inventive way of initializing the AS that I have as ancestor :-(
 201   sg_platf_new_AS_begin(&AS);
 202   simgrid::surf::As *current_routing = routing_get_current();
 203   static_cast<AsCluster*>(current_routing)->parse_specific_arguments(cluster);
 204
 205   if(cluster->loopback_bw!=0 || cluster->loopback_lat!=0){
 206       ((AsCluster*)current_routing)->nb_links_per_node_++;
 207       ((AsCluster*)current_routing)->has_loopback_=1;
 208   }
 209
 210   if(cluster->limiter_link!=0){
 211       ((AsCluster*)current_routing)->nb_links_per_node_++;
 212       ((AsCluster*)current_routing)->has_limiter_=1;
 213   }
 214
 215
 216   //Make all hosts
 217   xbt_dynar_t radical_elements = xbt_str_split(cluster->radical, ",");
 218   xbt_dynar_foreach(radical_elements, iter, groups) {
 219
 220     xbt_dynar_t radical_ends = xbt_str_split(groups, "-");
 221     int start = surf_parse_get_int(xbt_dynar_get_as(radical_ends, 0, char *));
 222     int end;
 223
 224     switch (xbt_dynar_length(radical_ends)) {
 225     case 1:
 226       end = start;
 227       break;
 228     case 2:
 229       end = surf_parse_get_int(xbt_dynar_get_as(radical_ends, 1, char *));
 230       break;
 231     default:
 232       surf_parse_error("Malformed radical");
 233       break;
 234     }
 235     for (int i = start; i <= end; i++) {
 236       host_id = bprintf("%s%d%s", cluster->prefix, i, cluster->suffix);
 237       link_id = bprintf("%s_link_%d", cluster->id, i);
 238
 239       XBT_DEBUG("<host\tid=\"%s\"\tpower=\"%f\">", host_id, cluster->speed);
 240
 241       memset(&host, 0, sizeof(host));
 242       host.id = host_id;
 243       if ((cluster->properties != NULL) && (!xbt_dict_is_empty(cluster->properties))) {
 244         xbt_dict_cursor_t cursor=NULL;
 245         char *key,*data;
 246         host.properties = xbt_dict_new();
 247
 248         xbt_dict_foreach(cluster->properties,cursor,key,data) {
 249           xbt_dict_set(host.properties, key, xbt_strdup(data),free);
 250         }
 251       }
 252       if (cluster->availability_trace && strcmp(cluster->availability_trace, "")) {
 253         xbt_dict_set(patterns, "radical", bprintf("%d", i), NULL);
 254         char *avail_file = xbt_str_varsubst(cluster->availability_trace, patterns);
 255         XBT_DEBUG("\tavailability_file=\"%s\"", avail_file);
 256         host.speed_trace = tmgr_trace_new_from_file(avail_file);
 257         xbt_free(avail_file);
 258       } else {
 259         XBT_DEBUG("\tavailability_file=\"\"");
 260       }
 261
 262       if (cluster->state_trace && strcmp(cluster->state_trace, "")) {
 263         char *avail_file = xbt_str_varsubst(cluster->state_trace, patterns);
 264         XBT_DEBUG("\tstate_file=\"%s\"", avail_file);
 265         host.state_trace = tmgr_trace_new_from_file(avail_file);
 266         xbt_free(avail_file);
 267       } else {
 268         XBT_DEBUG("\tstate_file=\"\"");
 269       }
 270
 271       host.speed_peak = xbt_dynar_new(sizeof(double), NULL);
 272       xbt_dynar_push(host.speed_peak,&cluster->speed);
 273       host.pstate = 0;
 274
 275       //host.power_peak = cluster->power;
 276       host.speed_scale = 1.0;
 277       host.core_amount = cluster->core_amount;
 278       host.initiallyOn = 1;
 279       host.coord = "";
 280       sg_platf_new_host(&host);
 281       xbt_dynar_free(&host.speed_peak);
 282       XBT_DEBUG("</host>");
 283
 284       XBT_DEBUG("<link\tid=\"%s\"\tbw=\"%f\"\tlat=\"%f\"/>", link_id,
 285                 cluster->bw, cluster->lat);
 286
 287
 288       s_surf_parsing_link_up_down_t info_lim, info_loop;
 289       // All links are saved in a matrix;
 290       // every row describes a single node; every node
 291       // may have multiple links.
 292       // the first column may store a link from x to x if p_has_loopback is set
 293       // the second column may store a limiter link if p_has_limiter is set
 294       // other columns are to store one or more link for the node
 295
 296       //add a loopback link
 297       if(cluster->loopback_bw!=0 || cluster->loopback_lat!=0){
 298         char *tmp_link = bprintf("%s_loopback", link_id);
 299         XBT_DEBUG("<loopback\tid=\"%s\"\tbw=\"%f\"/>", tmp_link,
 300                 cluster->limiter_link);
 301
 302
 303         memset(&link, 0, sizeof(link));
 304         link.id        = tmp_link;
 305         link.bandwidth = cluster->loopback_bw;
 306         link.latency   = cluster->loopback_lat;
 307         link.initiallyOn = 1;
 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,
 314           rankId*(static_cast<AsCluster*>(current_routing))->nb_links_per_node_, &info_loop);
 315       }
 316
 317       //add a limiter link (shared link to account for maximal bandwidth of the node)
 318       if(cluster->limiter_link!=0){
 319         char *tmp_link = bprintf("%s_limiter", link_id);
 320         XBT_DEBUG("<limiter\tid=\"%s\"\tbw=\"%f\"/>", tmp_link,
 321                 cluster->limiter_link);
 322
 323
 324         memset(&link, 0, sizeof(link));
 325         link.id = tmp_link;
 326         link.bandwidth = cluster->limiter_link;
 327         link.latency = 0;
 328         link.initiallyOn = 1;
 329         link.policy = SURF_LINK_SHARED;
 330         sg_platf_new_link(&link);
 331         info_lim.link_up = Link::byName(tmp_link);
 332         info_lim.link_down = info_lim.link_up;
 333         free(tmp_link);
 334         auto as_cluster = static_cast<AsCluster*>(current_routing);
 335         xbt_dynar_set(current_routing->upDownLinks,
 336             rankId*(as_cluster)->nb_links_per_node_ + as_cluster->has_loopback_ ,
 337             &info_lim);
 338
 339       }
 340
 341
 342       //call the cluster function that adds the others links
 343       if (cluster->topology == SURF_CLUSTER_FAT_TREE) {
 344         ((AsClusterFatTree*) current_routing)->addProcessingNode(i);
 345       }
 346       else {
 347       static_cast<AsCluster*>(current_routing)->create_links_for_node(cluster, i, rankId, rankId*
 348           static_cast<AsCluster*>(current_routing)->nb_links_per_node_
 349           + static_cast<AsCluster*>(current_routing)->has_loopback_
 350           + static_cast<AsCluster*>(current_routing)->has_limiter_ );
 351       }
 352       xbt_free(link_id);
 353       xbt_free(host_id);
 354       rankId++;
 355     }
 356
 357     xbt_dynar_free(&radical_ends);
 358   }
 359   xbt_dynar_free(&radical_elements);
 360
 361   // For fat trees, the links must be created once all nodes have been added
 362   if(cluster->topology == SURF_CLUSTER_FAT_TREE) {
 363     static_cast<simgrid::surf::AsClusterFatTree*>(current_routing)->create_links();
 364   }
 365   // Add a router. It is magically used thanks to the way in which surf_routing_cluster is written,
 366   // and it's very useful to connect clusters together
 367   XBT_DEBUG(" ");
 368   XBT_DEBUG("<router id=\"%s\"/>", cluster->router_id);
 369   char *newid = NULL;
 370   s_sg_platf_router_cbarg_t router = SG_PLATF_ROUTER_INITIALIZER;
 371   memset(&router, 0, sizeof(router));
 372   router.id = cluster->router_id;
 373   router.coord = "";
 374   if (!router.id || !strcmp(router.id, ""))
 375     router.id = newid =
 376         bprintf("%s%s_router%s", cluster->prefix, cluster->id,
 377                 cluster->suffix);
 378   sg_platf_new_router(&router);
 379   ((AsCluster*)current_routing)->router_ = (simgrid::surf::NetCard*) xbt_lib_get_or_null(as_router_lib, router.id, ROUTING_ASR_LEVEL);
 380   free(newid);
 381
 382   //Make the backbone
 383   if ((cluster->bb_bw != 0) || (cluster->bb_lat != 0)) {
 384     char *link_backbone = bprintf("%s_backbone", cluster->id);
 385     XBT_DEBUG("<link\tid=\"%s\" bw=\"%f\" lat=\"%f\"/>", link_backbone,
 386               cluster->bb_bw, cluster->bb_lat);
 387
 388     memset(&link, 0, sizeof(link));
 389     link.id        = link_backbone;
 390     link.bandwidth = cluster->bb_bw;
 391     link.latency   = cluster->bb_lat;
 392     link.initiallyOn = 1;
 393     link.policy    = cluster->bb_sharing_policy;
 394
 395     sg_platf_new_link(&link);
 396
 397     routing_cluster_add_backbone(Link::byName(link_backbone));
 398
 399     free(link_backbone);
 400   }
 401
 402   XBT_DEBUG("</AS>");
 403   sg_platf_new_AS_end();
 404   XBT_DEBUG(" ");
 405   xbt_dict_free(&patterns); // no op if it were never set
 406
 407   simgrid::surf::on_cluster(cluster);
 408 }
 409
 410 void sg_platf_new_storage(sg_platf_storage_cbarg_t storage)
 411 {
 412   xbt_assert(!xbt_lib_get_or_null(storage_lib, storage->id,ROUTING_STORAGE_LEVEL),
 413                "Refusing to add a second storage named \"%s\"", storage->id);
 414
 415   void* stype = xbt_lib_get_or_null(storage_type_lib, storage->type_id,ROUTING_STORAGE_TYPE_LEVEL);
 416   xbt_assert(stype,"No storage type '%s'", storage->type_id);
 417
 418   XBT_DEBUG("ROUTING Create a storage name '%s' with type_id '%s' and content '%s'",
 419       storage->id,
 420       storage->type_id,
 421       storage->content);
 422
 423   xbt_lib_set(storage_lib,
 424       storage->id,
 425       ROUTING_STORAGE_LEVEL,
 426       (void *) xbt_strdup(storage->type_id));
 427
 428   // if storage content is not specified use the content of storage_type if any
 429   if(!strcmp(storage->content,"") && strcmp(((storage_type_t) stype)->content,"")){
 430     storage->content = ((storage_type_t) stype)->content;
 431     storage->content_type = ((storage_type_t) stype)->content_type;
 432     XBT_DEBUG("For disk '%s' content is empty, inherit the content (of type %s) from storage type '%s' ",
 433         storage->id,((storage_type_t) stype)->content_type,
 434         ((storage_type_t) stype)->type_id);
 435   }
 436
 437   XBT_DEBUG("SURF storage create resource\n\t\tid '%s'\n\t\ttype '%s' "
 438       "\n\t\tmodel '%s' \n\t\tcontent '%s'\n\t\tcontent_type '%s' "
 439       "\n\t\tproperties '%p''\n",
 440       storage->id,
 441       ((storage_type_t) stype)->model,
 442       ((storage_type_t) stype)->type_id,
 443       storage->content,
 444       storage->content_type,
 445     storage->properties);
 446
 447   surf_storage_model->createStorage(storage->id,
 448                                      ((storage_type_t) stype)->type_id,
 449                                      storage->content,
 450                                      storage->content_type,
 451                    storage->properties,
 452                                      storage->attach);
 453 }
 454 void sg_platf_new_storage_type(sg_platf_storage_type_cbarg_t storage_type){
 455
 456   xbt_assert(!xbt_lib_get_or_null(storage_type_lib, storage_type->id,ROUTING_STORAGE_TYPE_LEVEL),
 457                "Reading a storage type, processing unit \"%s\" already exists", storage_type->id);
 458
 459   storage_type_t stype = xbt_new0(s_storage_type_t, 1);
 460   stype->model = xbt_strdup(storage_type->model);
 461   stype->properties = storage_type->properties;
 462   stype->content = xbt_strdup(storage_type->content);
 463   stype->content_type = xbt_strdup(storage_type->content_type);
 464   stype->type_id = xbt_strdup(storage_type->id);
 465   stype->size = storage_type->size;
 466   stype->model_properties = storage_type->model_properties;
 467
 468   XBT_DEBUG("ROUTING Create a storage type id '%s' with model '%s', "
 469       "content '%s', and content_type '%s'",
 470       stype->type_id,
 471       stype->model,
 472       storage_type->content,
 473       storage_type->content_type);
 474
 475   xbt_lib_set(storage_type_lib,
 476       stype->type_id,
 477       ROUTING_STORAGE_TYPE_LEVEL,
 478       (void *) stype);
 479 }
 480 void sg_platf_new_mstorage(sg_platf_mstorage_cbarg_t mstorage)
 481 {
 482   THROW_UNIMPLEMENTED;
 483 }
 484
 485 static void mount_free(void *p)
 486 {
 487   mount_t mnt = (mount_t) p;
 488   xbt_free(mnt->name);
 489 }
 490
 491 void sg_platf_new_mount(sg_platf_mount_cbarg_t mount){
 492   // Verification of an existing storage
 493   xbt_assert(xbt_lib_get_or_null(storage_lib, mount->storageId, ROUTING_STORAGE_LEVEL),
 494       "Cannot mount non-existent disk \"%s\"", mount->storageId);
 495
 496   XBT_DEBUG("ROUTING Mount '%s' on '%s'",mount->storageId, mount->name);
 497
 498   s_mount_t mnt;
 499   mnt.storage = surf_storage_resource_priv(surf_storage_resource_by_name(mount->storageId));
 500   mnt.name = xbt_strdup(mount->name);
 501
 502   if(!mount_list){
 503     XBT_DEBUG("Create a Mount list for %s",A_surfxml_host_id);
 504     mount_list = xbt_dynar_new(sizeof(s_mount_t), mount_free);
 505   }
 506   xbt_dynar_push(mount_list, &mnt);
 507 }
 508
 509 void sg_platf_new_route(sg_platf_route_cbarg_t route)
 510 {
 511   routing_get_current()->addRoute(route);
 512 }
 513
 514 void sg_platf_new_bypassRoute(sg_platf_route_cbarg_t bypassRoute)
 515 {
 516   routing_get_current()->addBypassRoute(bypassRoute);
 517 }
 518
 519 void sg_platf_new_process(sg_platf_process_cbarg_t process)
 520 {
 521   xbt_assert(simix_global,"Cannot create process without SIMIX.");
 522
 523   sg_host_t host = sg_host_by_name(process->host);
 524   if (!host) {
 525     // The requested host does not exist. Do a nice message to the user
 526     char *tmp = bprintf("Cannot create process '%s': host '%s' does not exist\nExisting hosts: '",process->function, process->host);
 527     xbt_strbuff_t msg = xbt_strbuff_new_from(tmp);
 528     free(tmp);
 529     xbt_dynar_t all_hosts = xbt_dynar_sort_strings(sg_hosts_as_dynar());
 530     simgrid::s4u::Host* host;
 531     unsigned int cursor;
 532     xbt_dynar_foreach(all_hosts,cursor, host) {
 533       xbt_strbuff_append(msg,host->name().c_str());
 534       xbt_strbuff_append(msg,"', '");
 535       if (msg->used > 1024) {
 536         msg->data[msg->used-3]='\0';
 537         msg->used -= 3;
 538
 539         xbt_strbuff_append(msg," ...(list truncated)......");// That will be shortened by 3 chars when existing the loop
 540       }
 541     }
 542     msg->data[msg->used-3]='\0';
 543     xbt_die("%s", msg->data);
 544   }
 545   xbt_main_func_t parse_code = SIMIX_get_registered_function(process->function);
 546   xbt_assert(parse_code, "Function '%s' unknown", process->function);
 547
 548   double start_time = process->start_time;
 549   double kill_time  = process->kill_time;
 550   int auto_restart = process->on_failure == SURF_PROCESS_ON_FAILURE_DIE ? 0 : 1;
 551
 552   smx_process_arg_t arg = NULL;
 553   smx_process_t process_created = NULL;
 554
 555   arg = xbt_new0(s_smx_process_arg_t, 1);
 556   arg->code = parse_code;
 557   arg->data = NULL;
 558   arg->hostname = sg_host_get_name(host);
 559   arg->argc = process->argc;
 560   arg->argv = xbt_new(char *,process->argc);
 561   int i;
 562   for (i=0; i<process->argc; i++)
 563     arg->argv[i] = xbt_strdup(process->argv[i]);
 564   arg->name = xbt_strdup(arg->argv[0]);
 565   arg->kill_time = kill_time;
 566   arg->properties = current_property_set;
 567   if (!sg_host_simix(host)->boot_processes) {
 568     sg_host_simix(host)->boot_processes = xbt_dynar_new(sizeof(smx_process_arg_t), _SIMIX_host_free_process_arg);
 569   }
 570   xbt_dynar_push_as(sg_host_simix(host)->boot_processes,smx_process_arg_t,arg);
 571
 572   if (start_time > SIMIX_get_clock()) {
 573     arg = xbt_new0(s_smx_process_arg_t, 1);
 574     arg->name = (char*)(process->argv)[0];
 575     arg->code = parse_code;
 576     arg->data = NULL;
 577     arg->hostname = sg_host_get_name(host);
 578     arg->argc = process->argc;
 579     arg->argv = (char**)(process->argv);
 580     arg->kill_time = kill_time;
 581     arg->properties = current_property_set;
 582
 583     XBT_DEBUG("Process %s(%s) will be started at time %f", arg->name,
 584            arg->hostname, start_time);
 585     SIMIX_timer_set(start_time, [](void* arg) {
 586       SIMIX_process_create_from_wrapper((smx_process_arg_t) arg);
 587     }, arg);
 588   } else {                      // start_time <= SIMIX_get_clock()
 589     XBT_DEBUG("Starting Process %s(%s) right now", arg->name, sg_host_get_name(host));
 590
 591     if (simix_global->create_process_function)
 592       process_created = simix_global->create_process_function(
 593           arg->name,
 594                                             parse_code,
 595                                             NULL,
 596                                             sg_host_get_name(host),
 597                                             kill_time,
 598                                             process->argc,
 599                                             (char**)(process->argv),
 600                                             current_property_set,
 601                                             auto_restart, NULL);
 602     else
 603       process_created = simcall_process_create(arg->name, parse_code, NULL, sg_host_get_name(host), kill_time, process->argc,
 604           (char**)process->argv, current_property_set,auto_restart);
 605
 606     /* verify if process has been created (won't be the case if the host is currently dead, but that's fine) */
 607     if (!process_created) {
 608       return;
 609     }
 610   }
 611   current_property_set = NULL;
 612 }
 613
 614 void sg_platf_begin() { /* Do nothing: just for symmetry of user code */ }
 615
 616 void sg_platf_end() {
 617   simgrid::surf::on_postparse();
 618 }
 619
 620 /* Pick the right models for CPU, net and host, and call their model_init_preparse */
 621 static void surf_config_models_setup()
 622 {
 623   const char *host_model_name;
 624   const char *vm_model_name;
 625   int host_id = -1;
 626   int vm_id = -1;
 627   char *network_model_name = NULL;
 628   char *cpu_model_name = NULL;
 629   int storage_id = -1;
 630   char *storage_model_name = NULL;
 631
 632   host_model_name = xbt_cfg_get_string(_sg_cfg_set, "host/model");
 633   vm_model_name = xbt_cfg_get_string(_sg_cfg_set, "vm/model");
 634   network_model_name = xbt_cfg_get_string(_sg_cfg_set, "network/model");
 635   cpu_model_name = xbt_cfg_get_string(_sg_cfg_set, "cpu/model");
 636   storage_model_name = xbt_cfg_get_string(_sg_cfg_set, "storage/model");
 637
 638   /* Check whether we use a net/cpu model differing from the default ones, in which case
 639    * we should switch to the "compound" host model to correctly dispatch stuff to
 640    * the right net/cpu models.
 641    */
 642
 643   if ((!xbt_cfg_is_default_value(_sg_cfg_set, "network/model") ||
 644        !xbt_cfg_is_default_value(_sg_cfg_set, "cpu/model")) &&
 645       xbt_cfg_is_default_value(_sg_cfg_set, "host/model")) {
 646     host_model_name = "compound";
 647     xbt_cfg_set_string(_sg_cfg_set, "host/model", host_model_name);
 648   }
 649
 650   XBT_DEBUG("host model: %s", host_model_name);
 651   host_id = find_model_description(surf_host_model_description, host_model_name);
 652   if (!strcmp(host_model_name, "compound")) {
 653     int network_id = -1;
 654     int cpu_id = -1;
 655
 656     xbt_assert(cpu_model_name,
 657                 "Set a cpu model to use with the 'compound' host model");
 658
 659     xbt_assert(network_model_name,
 660                 "Set a network model to use with the 'compound' host model");
 661
 662     if(surf_cpu_model_init_preparse){
 663       surf_cpu_model_init_preparse();
 664     } else {
 665       cpu_id =
 666           find_model_description(surf_cpu_model_description, cpu_model_name);
 667       surf_cpu_model_description[cpu_id].model_init_preparse();
 668     }
 669
 670     network_id =
 671         find_model_description(surf_network_model_description,
 672                                network_model_name);
 673     surf_network_model_description[network_id].model_init_preparse();
 674   }
 675
 676   XBT_DEBUG("Call host_model_init");
 677   surf_host_model_description[host_id].model_init_preparse();
 678
 679   XBT_DEBUG("Call vm_model_init");
 680   vm_id = find_model_description(surf_vm_model_description, vm_model_name);
 681   surf_vm_model_description[vm_id].model_init_preparse();
 682
 683   XBT_DEBUG("Call storage_model_init");
 684   storage_id = find_model_description(surf_storage_model_description, storage_model_name);
 685   surf_storage_model_description[storage_id].model_init_preparse();
 686
 687 }
 688
 689 void sg_platf_new_AS_begin(sg_platf_AS_cbarg_t AS)
 690 {
 691   if (!surf_parse_models_setup_already_called) {
 692     /* Initialize the surf models. That must be done after we got all config, and before we need the models.
 693      * That is, after the last <config> tag, if any, and before the first of cluster|peer|AS|trace|trace_connect
 694      *
 695      * I'm not sure for <trace> and <trace_connect>, there may be a bug here
 696      * (FIXME: check it out by creating a file beginning with one of these tags)
 697      * but cluster and peer create ASes internally, so putting the code in there is ok.
 698      *
 699      * TODO, There used to be a guard protecting here against
 700      * xbt_dynar_length(sg_platf_AS_begin_cb_list) because we don't want to
 701      * initialize the models if we are parsing the file to get the deployment.
 702      * That could happen if the same file would be used for platf and deploy:
 703      * it'd contain AS tags even during the deploy parsing. Removing that guard
 704      * would result of the models to get re-inited when parsing for deploy.
 705      * Currently using the same file for platform and deployment is broken
 706      * however. This guard will have to ba adapted in order to make this feature
 707      * work again.
 708      */
 709     surf_parse_models_setup_already_called = 1;
 710     surf_config_models_setup();
 711   }
 712
 713   routing_AS_begin(AS);
 714   if (TRACE_is_enabled())
 715     sg_instr_AS_begin(AS);
 716 }
 717
 718 void sg_platf_new_AS_end()
 719 {
 720   routing_AS_end();
 721   if (TRACE_is_enabled())
 722     sg_instr_AS_end();
 723 }