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 "simgrid/platf_interface.h"
  13 #include "surf/surf_routing.h"
  14 #include "surf/surf.h"
  15
  16 #include "src/simix/smx_private.h"
  17
  18 #include "cpu_interface.hpp"
  19 #include "host_interface.hpp"
  20
  21 XBT_LOG_EXTERNAL_DEFAULT_CATEGORY(surf_parse);
  22 xbt_dynar_t sg_platf_host_cb_list = NULL;   // of sg_platf_host_cb_t
  23 xbt_dynar_t sg_platf_link_cb_list = NULL;   // of sg_platf_link_cb_t
  24 xbt_dynar_t sg_platf_peer_cb_list = NULL; // of sg_platf_peer_cb_t
  25 xbt_dynar_t sg_platf_cluster_cb_list = NULL; // of sg_platf_cluster_cb_t
  26 xbt_dynar_t sg_platf_cabinet_cb_list = NULL; // of sg_platf_cluster_cb_t
  27 xbt_dynar_t sg_platf_postparse_cb_list = NULL; // of void_f_void_t
  28 xbt_dynar_t sg_platf_prop_cb_list = NULL; // of sg_platf_prop_cb_t
  29
  30 xbt_dynar_t sg_platf_route_cb_list = NULL; // of sg_platf_route_cb_t
  31 xbt_dynar_t sg_platf_ASroute_cb_list = NULL; // of sg_platf_ASroute_cb_t
  32 xbt_dynar_t sg_platf_bypassRoute_cb_list = NULL; // of sg_platf_bypassRoute_cb_t
  33 xbt_dynar_t sg_platf_bypassASroute_cb_list = NULL; // of sg_platf_bypassASroute_cb_t
  34
  35 xbt_dynar_t sg_platf_trace_cb_list = NULL;
  36 xbt_dynar_t sg_platf_trace_connect_cb_list = NULL;
  37
  38 /* ***************************************** */
  39 /* TUTORIAL: New TAG                         */
  40
  41 xbt_dynar_t sg_platf_gpu_cb_list = NULL;
  42 /* ***************************************** */
  43
  44
  45 static int surf_parse_models_setup_already_called = 0;
  46
  47 /* one RngStream for the platform, to respect some statistic rules */
  48 static RngStream sg_platf_rng_stream = NULL;
  49
  50 /** Module management function: creates all internal data structures */
  51 void sg_platf_init(void) {
  52
  53   //FIXME : Ugly, but useful...
  54   if(sg_platf_host_cb_list)
  55     return; //Already initialized, so do nothing...
  56
  57   sg_platf_host_cb_list = xbt_dynar_new(sizeof(sg_platf_host_cb_t), NULL);
  58   sg_platf_link_cb_list = xbt_dynar_new(sizeof(sg_platf_link_cb_t), NULL);
  59   sg_platf_peer_cb_list = xbt_dynar_new(sizeof(sg_platf_peer_cb_t), NULL);
  60   sg_platf_cluster_cb_list = xbt_dynar_new(sizeof(sg_platf_cluster_cb_t), NULL);
  61   sg_platf_cabinet_cb_list = xbt_dynar_new(sizeof(sg_platf_cabinet_cb_t), NULL);
  62   sg_platf_postparse_cb_list = xbt_dynar_new(sizeof(sg_platf_link_cb_t),NULL);
  63   sg_platf_prop_cb_list = xbt_dynar_new(sizeof(sg_platf_prop_cb_t),NULL);
  64
  65   sg_platf_route_cb_list = xbt_dynar_new(sizeof(sg_platf_route_cb_t), NULL);
  66   sg_platf_ASroute_cb_list = xbt_dynar_new(sizeof(sg_platf_route_cb_t), NULL);
  67   sg_platf_bypassRoute_cb_list = xbt_dynar_new(sizeof(sg_platf_route_cb_t), NULL);
  68   sg_platf_bypassASroute_cb_list = xbt_dynar_new(sizeof(sg_platf_route_cb_t), NULL);
  69
  70   sg_platf_trace_cb_list = xbt_dynar_new(sizeof(sg_platf_trace_cb_t), NULL);
  71   sg_platf_trace_connect_cb_list = xbt_dynar_new(sizeof(sg_platf_trace_connect_cb_t), NULL);
  72
  73   /* ***************************************** */
  74   /* TUTORIAL: New TAG                         */
  75
  76   sg_platf_gpu_cb_list = xbt_dynar_new(sizeof(sg_platf_gpu_cb_t), NULL);
  77   /* ***************************************** */
  78 }
  79 /** Module management function: frees all internal data structures */
  80 void sg_platf_exit(void) {
  81   xbt_dynar_free(&sg_platf_host_cb_list);
  82   xbt_dynar_free(&sg_platf_link_cb_list);
  83   xbt_dynar_free(&sg_platf_postparse_cb_list);
  84   xbt_dynar_free(&sg_platf_peer_cb_list);
  85   xbt_dynar_free(&sg_platf_cluster_cb_list);
  86   xbt_dynar_free(&sg_platf_cabinet_cb_list);
  87   xbt_dynar_free(&sg_platf_prop_cb_list);
  88
  89   xbt_dynar_free(&sg_platf_trace_cb_list);
  90   xbt_dynar_free(&sg_platf_trace_connect_cb_list);
  91
  92   xbt_dynar_free(&sg_platf_route_cb_list);
  93   xbt_dynar_free(&sg_platf_ASroute_cb_list);
  94   xbt_dynar_free(&sg_platf_bypassRoute_cb_list);
  95   xbt_dynar_free(&sg_platf_bypassASroute_cb_list);
  96
  97   /* ***************************************** */
  98   /* TUTORIAL: New TAG                         */
  99
 100   xbt_dynar_free(&sg_platf_gpu_cb_list);
 101
 102   /* ***************************************** */
 103
 104   /* make sure that we will reinit the models while loading the platf once reinited */
 105   surf_parse_models_setup_already_called = 0;
 106 }
 107
 108 void sg_platf_new_host(sg_platf_host_cbarg_t host)
 109 {
 110
 111   xbt_assert(! sg_host_by_name(host->id),
 112                      "Refusing to create a second host named '%s'.", host->id);
 113
 114   RoutingEdge *net = NULL;
 115   As* current_routing = routing_get_current();
 116   if (current_routing)
 117     net = routing_add_host(current_routing, host);
 118
 119   Cpu *cpu = surf_cpu_model_pm->createCpu(
 120         host->id,
 121         host->power_peak,
 122         host->pstate,
 123         host->power_scale,
 124         host->power_trace,
 125         host->core_amount,
 126         host->initial_state,
 127         host->state_trace,
 128         host->properties);
 129   surf_host_model->createHost(host->id, net, cpu);
 130
 131   unsigned int iterator;
 132   sg_platf_host_cb_t fun;
 133   xbt_dynar_foreach(sg_platf_host_cb_list, iterator, fun) {
 134     fun(host);
 135   }
 136 }
 137
 138 /**
 139  * \brief Add a "router" to the network element list
 140  */
 141 void sg_platf_new_router(sg_platf_router_cbarg_t router)
 142 {
 143   As* current_routing = routing_get_current();
 144
 145   if (current_routing->p_hierarchy == SURF_ROUTING_NULL)
 146     current_routing->p_hierarchy = SURF_ROUTING_BASE;
 147   xbt_assert(!xbt_lib_get_or_null(as_router_lib, router->id, ROUTING_ASR_LEVEL),
 148              "Reading a router, processing unit \"%s\" already exists",
 149              router->id);
 150
 151   RoutingEdge *info = new RoutingEdgeImpl(xbt_strdup(router->id),
 152                                             -1,
 153                                             SURF_NETWORK_ELEMENT_ROUTER,
 154                                             current_routing);
 155   info->setId(current_routing->parsePU(info));
 156   xbt_lib_set(as_router_lib, router->id, ROUTING_ASR_LEVEL, (void *) info);
 157   XBT_DEBUG("Having set name '%s' id '%d'", router->id, info->getId());
 158   routingEdgeCreatedCallbacks(info);
 159
 160   if (router->coord && strcmp(router->coord, "")) {
 161     unsigned int cursor;
 162     char*str;
 163
 164     if (!COORD_ASR_LEVEL)
 165       xbt_die ("To use host coordinates, please add --cfg=network/coordinates:yes to your command line");
 166     /* Pre-parse the host coordinates */
 167     xbt_dynar_t ctn_str = xbt_str_split_str(router->coord, " ");
 168     xbt_dynar_t ctn = xbt_dynar_new(sizeof(double),NULL);
 169     xbt_dynar_foreach(ctn_str,cursor, str) {
 170       double val = atof(str);
 171       xbt_dynar_push(ctn,&val);
 172     }
 173     xbt_dynar_shrink(ctn, 0);
 174     xbt_dynar_free(&ctn_str);
 175     xbt_lib_set(as_router_lib, router->id, COORD_ASR_LEVEL, (void *) ctn);
 176     XBT_DEBUG("Having set router coordinates for '%s'",router->id);
 177   }
 178
 179   if (TRACE_is_enabled())
 180     sg_instr_new_router(router);
 181 }
 182
 183 void sg_platf_new_link(sg_platf_link_cbarg_t link){
 184   unsigned int iterator;
 185   sg_platf_link_cb_t fun;
 186   xbt_dynar_foreach(sg_platf_link_cb_list, iterator, fun) {
 187     fun(link);
 188   }
 189 }
 190
 191 void sg_platf_new_peer(sg_platf_peer_cbarg_t peer){
 192   unsigned int iterator;
 193   sg_platf_peer_cb_t fun;
 194   xbt_dynar_foreach(sg_platf_peer_cb_list, iterator, fun) {
 195     fun(peer);
 196   }
 197 }
 198 void sg_platf_new_cluster(sg_platf_cluster_cbarg_t cluster){
 199   unsigned int iterator;
 200   sg_platf_cluster_cb_t fun;
 201   xbt_dynar_foreach(sg_platf_cluster_cb_list, iterator, fun) {
 202     fun(cluster);
 203   }
 204 }
 205 void sg_platf_new_cabinet(sg_platf_cabinet_cbarg_t cabinet){
 206   unsigned int iterator;
 207   sg_platf_cabinet_cb_t fun;
 208   xbt_dynar_foreach(sg_platf_cabinet_cb_list, iterator, fun) {
 209     fun(cabinet);
 210   }
 211 }
 212 void sg_platf_new_storage(sg_platf_storage_cbarg_t storage)
 213 {
 214   xbt_assert(!xbt_lib_get_or_null(storage_lib, storage->id,ROUTING_STORAGE_LEVEL),
 215                "Reading a storage, processing unit \"%s\" already exists", storage->id);
 216
 217   // Verification of an existing type_id
 218 #ifndef NDEBUG
 219   void* storage_type = xbt_lib_get_or_null(storage_type_lib, storage->type_id,ROUTING_STORAGE_TYPE_LEVEL);
 220 #endif
 221   xbt_assert(storage_type,"Reading a storage, type id \"%s\" does not exists", storage->type_id);
 222
 223   XBT_DEBUG("ROUTING Create a storage name '%s' with type_id '%s' and content '%s'",
 224       storage->id,
 225       storage->type_id,
 226       storage->content);
 227
 228   xbt_lib_set(storage_lib,
 229       storage->id,
 230       ROUTING_STORAGE_LEVEL,
 231       (void *) xbt_strdup(storage->type_id));
 232
 233   void* stype = xbt_lib_get_or_null(storage_type_lib,
 234                                     storage->type_id,
 235                                     ROUTING_STORAGE_TYPE_LEVEL);
 236   if(!stype) xbt_die("No storage type '%s'",storage->type_id);
 237
 238   // if storage content is not specified use the content of storage_type if exist
 239   if(!strcmp(storage->content,"") && strcmp(((storage_type_t) stype)->content,"")){
 240     storage->content = ((storage_type_t) stype)->content;
 241     storage->content_type = ((storage_type_t) stype)->content_type;
 242     XBT_DEBUG("For disk '%s' content is empty, inherit the content (of type %s) from storage type '%s' ",
 243         storage->id,((storage_type_t) stype)->content_type,
 244         ((storage_type_t) stype)->type_id);
 245   }
 246
 247   XBT_DEBUG("SURF storage create resource\n\t\tid '%s'\n\t\ttype '%s' "
 248       "\n\t\tmodel '%s' \n\t\tcontent '%s'\n\t\tcontent_type '%s' "
 249       "\n\t\tproperties '%p''\n",
 250       storage->id,
 251       ((storage_type_t) stype)->model,
 252       ((storage_type_t) stype)->type_id,
 253       storage->content,
 254       storage->content_type,
 255       storage->properties);
 256
 257   surf_storage_model->createStorage(storage->id,
 258                                      ((storage_type_t) stype)->type_id,
 259                                      storage->content,
 260                                      storage->content_type,
 261                                      storage->properties,
 262                                      storage->attach);
 263 }
 264 void sg_platf_new_storage_type(sg_platf_storage_type_cbarg_t storage_type){
 265
 266   xbt_assert(!xbt_lib_get_or_null(storage_type_lib, storage_type->id,ROUTING_STORAGE_TYPE_LEVEL),
 267                "Reading a storage type, processing unit \"%s\" already exists", storage_type->id);
 268
 269   storage_type_t stype = xbt_new0(s_storage_type_t, 1);
 270   stype->model = xbt_strdup(storage_type->model);
 271   stype->properties = storage_type->properties;
 272   stype->content = xbt_strdup(storage_type->content);
 273   stype->content_type = xbt_strdup(storage_type->content_type);
 274   stype->type_id = xbt_strdup(storage_type->id);
 275   stype->size = storage_type->size;
 276   stype->model_properties = storage_type->model_properties;
 277
 278   XBT_DEBUG("ROUTING Create a storage type id '%s' with model '%s', "
 279       "content '%s', and content_type '%s'",
 280       stype->type_id,
 281       stype->model,
 282       storage_type->content,
 283       storage_type->content_type);
 284
 285   xbt_lib_set(storage_type_lib,
 286       stype->type_id,
 287       ROUTING_STORAGE_TYPE_LEVEL,
 288       (void *) stype);
 289 }
 290 void sg_platf_new_mstorage(sg_platf_mstorage_cbarg_t mstorage)
 291 {
 292   THROW_UNIMPLEMENTED;
 293 //  mount_t mnt = xbt_new0(s_mount_t, 1);
 294 //  mnt->id = xbt_strdup(mstorage->type_id);
 295 //  mnt->name = xbt_strdup(mstorage->name);
 296 //
 297 //  if(!mount_list){
 298 //    XBT_DEBUG("Creata a Mount list for %s",A_surfxml_host_id);
 299 //    mount_list = xbt_dynar_new(sizeof(char *), NULL);
 300 //  }
 301 //  xbt_dynar_push(mount_list,(void *) mnt);
 302 //  free(mnt->id);
 303 //  free(mnt->name);
 304 //  xbt_free(mnt);
 305 //  XBT_DEBUG("ROUTING Mount a storage name '%s' with type_id '%s'",mstorage->name, mstorage->id);
 306 }
 307
 308 static void mount_free(void *p)
 309 {
 310   mount_t mnt = (mount_t) p;
 311   xbt_free(mnt->name);
 312 }
 313
 314 void sg_platf_new_mount(sg_platf_mount_cbarg_t mount){
 315   // Verification of an existing storage
 316 #ifndef NDEBUG
 317   void* storage = xbt_lib_get_or_null(storage_lib, mount->storageId, ROUTING_STORAGE_LEVEL);
 318 #endif
 319   xbt_assert(storage,"Disk id \"%s\" does not exists", mount->storageId);
 320
 321   XBT_DEBUG("ROUTING Mount '%s' on '%s'",mount->storageId, mount->name);
 322
 323   s_mount_t mnt;
 324   mnt.storage = surf_storage_resource_priv(surf_storage_resource_by_name(mount->storageId));
 325   mnt.name = xbt_strdup(mount->name);
 326
 327   if(!mount_list){
 328     XBT_DEBUG("Create a Mount list for %s",A_surfxml_host_id);
 329     mount_list = xbt_dynar_new(sizeof(s_mount_t), mount_free);
 330   }
 331   xbt_dynar_push(mount_list, &mnt);
 332 }
 333
 334 void sg_platf_new_route(sg_platf_route_cbarg_t route) {
 335   unsigned int iterator;
 336   sg_platf_route_cb_t fun;
 337   xbt_dynar_foreach(sg_platf_route_cb_list, iterator, fun) {
 338     fun(route);
 339   }
 340 }
 341 void sg_platf_new_ASroute(sg_platf_route_cbarg_t ASroute) {
 342   unsigned int iterator;
 343   sg_platf_route_cb_t fun;
 344   xbt_dynar_foreach(sg_platf_ASroute_cb_list, iterator, fun) {
 345     fun(ASroute);
 346   }
 347 }
 348 void sg_platf_new_bypassRoute(sg_platf_route_cbarg_t bypassRoute) {
 349   unsigned int iterator;
 350   sg_platf_route_cb_t fun;
 351   xbt_dynar_foreach(sg_platf_bypassRoute_cb_list, iterator, fun) {
 352     fun(bypassRoute);
 353   }
 354 }
 355 void sg_platf_new_bypassASroute(sg_platf_route_cbarg_t bypassASroute) {
 356   unsigned int iterator;
 357   sg_platf_route_cb_t fun;
 358   xbt_dynar_foreach(sg_platf_bypassASroute_cb_list, iterator, fun) {
 359     fun(bypassASroute);
 360   }
 361 }
 362 void sg_platf_new_prop(sg_platf_prop_cbarg_t prop) {
 363   unsigned int iterator;
 364   sg_platf_prop_cb_t fun;
 365   xbt_dynar_foreach(sg_platf_prop_cb_list, iterator, fun) {
 366     fun(prop);
 367   }
 368 }
 369 void sg_platf_new_trace(sg_platf_trace_cbarg_t trace) {
 370   unsigned int iterator;
 371   sg_platf_trace_cb_t fun;
 372   xbt_dynar_foreach(sg_platf_trace_cb_list, iterator, fun) {
 373     fun(trace);
 374   }
 375 }
 376 void sg_platf_trace_connect(sg_platf_trace_connect_cbarg_t trace_connect) {
 377   unsigned int iterator;
 378   sg_platf_trace_connect_cb_t fun;
 379   xbt_dynar_foreach(sg_platf_trace_connect_cb_list, iterator, fun) {
 380     fun(trace_connect);
 381   }
 382 }
 383
 384 void sg_platf_new_process(sg_platf_process_cbarg_t process)
 385 {
 386   if (!simix_global)
 387     xbt_die("Cannot create process without SIMIX.");
 388
 389   sg_host_t host = sg_host_by_name(process->host);
 390   if (!host)
 391     THROWF(arg_error, 0, "Host '%s' unknown", process->host);
 392   xbt_main_func_t parse_code = SIMIX_get_registered_function(process->function);
 393   xbt_assert(parse_code, "Function '%s' unknown", process->function);
 394
 395   double start_time = process->start_time;
 396   double kill_time  = process->kill_time;
 397   int auto_restart = process->on_failure == SURF_PROCESS_ON_FAILURE_DIE ? 0 : 1;
 398
 399   smx_process_arg_t arg = NULL;
 400   smx_process_t process_created = NULL;
 401
 402   arg = xbt_new0(s_smx_process_arg_t, 1);
 403   arg->code = parse_code;
 404   arg->data = NULL;
 405   arg->hostname = sg_host_get_name(host);
 406   arg->argc = process->argc;
 407   arg->argv = xbt_new(char *,process->argc);
 408   int i;
 409   for (i=0; i<process->argc; i++)
 410     arg->argv[i] = xbt_strdup(process->argv[i]);
 411   arg->name = xbt_strdup(arg->argv[0]);
 412   arg->kill_time = kill_time;
 413   arg->properties = current_property_set;
 414   if (!sg_host_simix(host)->boot_processes) {
 415     sg_host_simix(host)->boot_processes = xbt_dynar_new(sizeof(smx_process_arg_t), _SIMIX_host_free_process_arg);
 416   }
 417   xbt_dynar_push_as(sg_host_simix(host)->boot_processes,smx_process_arg_t,arg);
 418
 419   if (start_time > SIMIX_get_clock()) {
 420     arg = xbt_new0(s_smx_process_arg_t, 1);
 421     arg->name = (char*)(process->argv)[0];
 422     arg->code = parse_code;
 423     arg->data = NULL;
 424     arg->hostname = sg_host_get_name(host);
 425     arg->argc = process->argc;
 426     arg->argv = (char**)(process->argv);
 427     arg->kill_time = kill_time;
 428     arg->properties = current_property_set;
 429
 430     XBT_DEBUG("Process %s(%s) will be started at time %f", arg->name,
 431            arg->hostname, start_time);
 432     SIMIX_timer_set(start_time, [](void* arg) {
 433       SIMIX_process_create_from_wrapper((smx_process_arg_t) arg);
 434     }, arg);
 435   } else {                      // start_time <= SIMIX_get_clock()
 436     XBT_DEBUG("Starting Process %s(%s) right now", process->argv[0], sg_host_get_name(host));
 437
 438     if (simix_global->create_process_function)
 439       process_created = simix_global->create_process_function(
 440                                             (char*)(process->argv)[0],
 441                                             parse_code,
 442                                             NULL,
 443                                             sg_host_get_name(host),
 444                                             kill_time,
 445                                             process->argc,
 446                                             (char**)(process->argv),
 447                                             current_property_set,
 448                                             auto_restart, NULL);
 449     else
 450       process_created = simcall_process_create((char*)(process->argv)[0], parse_code, NULL, sg_host_get_name(host), kill_time, process->argc,
 451           (char**)process->argv, current_property_set,auto_restart);
 452
 453     /* verify if process has been created (won't be the case if the host is currently dead, but that's fine) */
 454     if (!process_created) {
 455       return;
 456     }
 457   }
 458   current_property_set = NULL;
 459 }
 460
 461 void sg_platf_route_begin (sg_platf_route_cbarg_t route){
 462   route->link_list = xbt_dynar_new(sizeof(char *), &xbt_free_ref);
 463 }
 464 void sg_platf_ASroute_begin (sg_platf_route_cbarg_t ASroute){
 465   ASroute->link_list = xbt_dynar_new(sizeof(char *), &xbt_free_ref);
 466 }
 467
 468 void sg_platf_route_end (sg_platf_route_cbarg_t route){
 469   sg_platf_new_route(route);
 470 }
 471 void sg_platf_ASroute_end (sg_platf_route_cbarg_t ASroute){
 472   sg_platf_new_ASroute(ASroute);
 473 }
 474
 475 void sg_platf_route_add_link (const char* link_id, sg_platf_route_cbarg_t route){
 476   char *link_name = xbt_strdup(link_id);
 477   xbt_dynar_push(route->link_list, &link_name);
 478 }
 479 void sg_platf_ASroute_add_link (const char* link_id, sg_platf_route_cbarg_t ASroute){
 480   char *link_name = xbt_strdup(link_id);
 481   xbt_dynar_push(ASroute->link_list, &link_name);
 482 }
 483
 484 void sg_platf_begin() { /* Do nothing: just for symmetry of user code */ }
 485
 486 void sg_platf_end() {
 487   unsigned int iterator;
 488   void_f_void_t fun;
 489   xbt_dynar_foreach(sg_platf_postparse_cb_list, iterator, fun) {
 490     fun();
 491   }
 492 }
 493
 494 void sg_platf_new_AS_begin(sg_platf_AS_cbarg_t AS)
 495 {
 496   if (!surf_parse_models_setup_already_called) {
 497     /* Initialize the surf models. That must be done after we got all config, and before we need the models.
 498      * That is, after the last <config> tag, if any, and before the first of cluster|peer|AS|trace|trace_connect
 499      *
 500      * I'm not sure for <trace> and <trace_connect>, there may be a bug here
 501      * (FIXME: check it out by creating a file beginning with one of these tags)
 502      * but cluster and peer create ASes internally, so putting the code in there is ok.
 503      *
 504      * TODO, There used to be a guard protecting here against
 505      * xbt_dynar_length(sg_platf_AS_begin_cb_list) because we don't want to
 506      * initialize the models if we are parsing the file to get the deployment.
 507      * That could happen if the same file would be used for platf and deploy:
 508      * it'd contain AS tags even during the deploy parsing. Removing that guard
 509      * would result of the models to get re-inited when parsing for deploy.
 510      * Currently using the same file for platform and deployment is broken
 511      * however. This guard will have to ba adapted in order to make this feature
 512      * work again.
 513      */
 514     surf_parse_models_setup_already_called = 1;
 515     surf_config_models_setup();
 516   }
 517
 518   routing_AS_begin(AS);
 519   if (TRACE_is_enabled())
 520     sg_instr_AS_begin(AS);
 521 }
 522
 523 void sg_platf_new_AS_end()
 524 {
 525   routing_AS_end();
 526   if (TRACE_is_enabled())
 527     sg_instr_AS_end();
 528 }
 529
 530 /* ***************************************** */
 531 /* TUTORIAL: New TAG                         */
 532
 533 void sg_platf_new_gpu(sg_platf_gpu_cbarg_t gpu) {
 534   unsigned int iterator;
 535   void_f_void_t fun;
 536   xbt_dynar_foreach(sg_platf_gpu_cb_list, iterator, fun) {
 537     fun();
 538   }
 539 }
 540
 541 void sg_platf_gpu_add_cb(sg_platf_gpu_cb_t fct) {
 542   xbt_dynar_push(sg_platf_gpu_cb_list, &fct);
 543 }
 544
 545 /* ***************************************** */
 546
 547
 548 void sg_platf_host_add_cb(sg_platf_host_cb_t fct) {
 549   xbt_dynar_push(sg_platf_host_cb_list, &fct);
 550 }
 551 void sg_platf_link_add_cb(sg_platf_link_cb_t fct) {
 552   xbt_dynar_push(sg_platf_link_cb_list, &fct);
 553 }
 554 void sg_platf_peer_add_cb(sg_platf_peer_cb_t fct) {
 555   xbt_dynar_push(sg_platf_peer_cb_list, &fct);
 556 }
 557 void sg_platf_cluster_add_cb(sg_platf_cluster_cb_t fct) {
 558   xbt_dynar_push(sg_platf_cluster_cb_list, &fct);
 559 }
 560 void sg_platf_cabinet_add_cb(sg_platf_cabinet_cb_t fct) {
 561   xbt_dynar_push(sg_platf_cabinet_cb_list, &fct);
 562 }
 563 void sg_platf_postparse_add_cb(void_f_void_t fct) {
 564   xbt_dynar_push(sg_platf_postparse_cb_list, &fct);
 565 }
 566 void sg_platf_route_add_cb(sg_platf_route_cb_t fct) {
 567   xbt_dynar_push(sg_platf_route_cb_list, &fct);
 568 }
 569 void sg_platf_ASroute_add_cb(sg_platf_route_cb_t fct) {
 570   xbt_dynar_push(sg_platf_ASroute_cb_list, &fct);
 571 }
 572 void sg_platf_bypassRoute_add_cb(sg_platf_route_cb_t fct) {
 573   xbt_dynar_push(sg_platf_bypassRoute_cb_list, &fct);
 574 }
 575 void sg_platf_bypassASroute_add_cb(sg_platf_route_cb_t fct) {
 576   xbt_dynar_push(sg_platf_bypassASroute_cb_list, &fct);
 577 }
 578 void sg_platf_prop_add_cb(sg_platf_prop_cb_t fct) {
 579   xbt_dynar_push(sg_platf_prop_cb_list, &fct);
 580 }
 581 void sg_platf_trace_add_cb(sg_platf_trace_cb_t fct) {
 582   xbt_dynar_push(sg_platf_trace_cb_list, &fct);
 583 }
 584 void sg_platf_trace_connect_add_cb(sg_platf_trace_connect_cb_t fct) {
 585   xbt_dynar_push(sg_platf_trace_connect_cb_list, &fct);
 586 }
 587 void sg_platf_rng_stream_init(unsigned long seed[6]) {
 588   RngStream_SetPackageSeed(seed);
 589   sg_platf_rng_stream = RngStream_CreateStream(NULL);
 590 }
 591
 592 RngStream sg_platf_rng_stream_get(const char* id) {
 593   RngStream stream = NULL;
 594   unsigned int id_hash;
 595
 596   stream = RngStream_CopyStream(sg_platf_rng_stream);
 597   id_hash = xbt_str_hash(id);
 598   RngStream_AdvanceState(stream, 0, (long)id_hash);
 599
 600   return stream;
 601 }