src/simix/smx_host.c

   1 /* Copyright (c) 2007-2014. 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 "smx_private.h"
   8 #include "xbt/sysdep.h"
   9 #include "xbt/log.h"
  10 #include "xbt/dict.h"
  11 #include "mc/mc.h"
  12 #include "mc/mc_replay.h"
  13
  14 XBT_LOG_NEW_DEFAULT_SUBCATEGORY(simix_host, simix,
  15                                 "SIMIX hosts");
  16
  17 static void SIMIX_execution_finish(smx_synchro_t synchro);
  18
  19 /**
  20  * \brief Internal function to create a SIMIX host.
  21  * \param name name of the host to create
  22  * \param workstation the SURF workstation to encapsulate
  23  * \param data some user data (may be NULL)
  24  */
  25 smx_host_t SIMIX_host_create(const char *name,
  26                                void *workstation, void *data)
  27 {
  28   smx_host_priv_t smx_host = xbt_new0(s_smx_host_priv_t, 1);
  29   s_smx_process_t proc;
  30
  31   /* Host structure */
  32   smx_host->process_list =
  33       xbt_swag_new(xbt_swag_offset(proc, host_proc_hookup));
  34
  35   /* Update global variables */
  36   xbt_lib_set(host_lib,name,SIMIX_HOST_LEVEL,smx_host);
  37
  38   return xbt_lib_get_elm_or_null(host_lib, name);
  39 }
  40
  41 /**
  42  * \brief Start the host if it is off
  43  *
  44  */
  45 void SIMIX_host_on(smx_host_t h)
  46 {
  47   smx_host_priv_t host = SIMIX_host_priv(h);
  48
  49   xbt_assert((host != NULL), "Invalid parameters");
  50
  51   if (surf_resource_get_state(surf_workstation_resource_priv(h))==SURF_RESOURCE_OFF) {
  52     surf_resource_set_state(surf_workstation_resource_priv(h), SURF_RESOURCE_ON);
  53
  54     unsigned int cpt;
  55     smx_process_arg_t arg;
  56     xbt_dynar_foreach(host->boot_processes,cpt,arg) {
  57       smx_process_t process;
  58
  59       char** argv = xbt_new(char*, arg->argc);
  60       for (int i=0; i<arg->argc; i++)
  61         argv[i] = xbt_strdup(arg->argv[i]);
  62
  63       XBT_DEBUG("Booting Process %s(%s) right now", arg->argv[0], arg->hostname);
  64       if (simix_global->create_process_function) {
  65         simix_global->create_process_function(&process,
  66                                               argv[0],
  67                                               arg->code,
  68                                               NULL,
  69                                               arg->hostname,
  70                                               arg->kill_time,
  71                                               arg->argc,
  72                                               argv,
  73                                               arg->properties,
  74                                               arg->auto_restart,
  75                                               NULL);
  76       } else {
  77         simcall_process_create(&process,
  78                                arg->argv[0],
  79                                arg->code,
  80                                NULL,
  81                                arg->hostname,
  82                                arg->kill_time,
  83                                arg->argc,
  84                                argv,
  85                                arg->properties,
  86                                arg->auto_restart);
  87       }
  88     }
  89   }
  90 }
  91
  92 void simcall_HANDLER_host_off(smx_simcall_t simcall, smx_host_t h)
  93 {
  94  SIMIX_host_off(h, simcall->issuer);
  95 }
  96
  97 /**
  98  * \brief Stop the host if it is on
  99  *
 100  */
 101 void SIMIX_host_off(smx_host_t h, smx_process_t issuer)
 102 {
 103   smx_host_priv_t host = SIMIX_host_priv(h);
 104
 105   xbt_assert((host != NULL), "Invalid parameters");
 106
 107   if (surf_resource_get_state(surf_workstation_resource_priv(h))==SURF_RESOURCE_ON) {
 108         surf_resource_set_state(surf_workstation_resource_priv(h), SURF_RESOURCE_OFF);
 109
 110     /* Clean Simulator data */
 111     if (xbt_swag_size(host->process_list) != 0) {
 112       smx_process_t process = NULL;
 113       xbt_swag_foreach(process, host->process_list) {
 114         SIMIX_process_kill(process, issuer);
 115         XBT_DEBUG("Killing %s on %s by %s", process->name,  sg_host_name(process->smx_host), issuer->name);
 116       }
 117     }
 118   }
 119 }
 120
 121 /**
 122  * \brief Internal function to destroy a SIMIX host.
 123  *
 124  * \param h the host to destroy (a smx_host_t)
 125  */
 126 void SIMIX_host_destroy(void *h)
 127 {
 128   smx_host_priv_t host = (smx_host_priv_t) h;
 129
 130   xbt_assert((host != NULL), "Invalid parameters");
 131
 132   /* Clean Simulator data */
 133   if (xbt_swag_size(host->process_list) != 0) {
 134     char *msg = xbt_strdup("Shutting down host, but it's not empty:");
 135     char *tmp;
 136     smx_process_t process = NULL;
 137
 138     xbt_swag_foreach(process, host->process_list) {
 139       tmp = bprintf("%s\n\t%s", msg, process->name);
 140       free(msg);
 141       msg = tmp;
 142     }
 143     SIMIX_display_process_status();
 144     THROWF(arg_error, 0, "%s", msg);
 145   }
 146   xbt_dynar_free(&host->auto_restart_processes);
 147   xbt_dynar_free(&host->boot_processes);
 148   xbt_swag_free(host->process_list);
 149
 150   /* Clean host structure */
 151   free(host);
 152   return;
 153 }
 154
 155 smx_host_t SIMIX_host_get_by_name(const char *name){
 156   xbt_assert(((simix_global != NULL)
 157                && (host_lib != NULL)),
 158               "Environment not set yet");
 159
 160   return xbt_lib_get_elm_or_null(host_lib, name);
 161 }
 162
 163 smx_host_t SIMIX_host_self(void)
 164 {
 165   smx_process_t process = SIMIX_process_self();
 166   return (process == NULL) ? NULL : SIMIX_process_get_host(process);
 167 }
 168
 169 /* needs to be public and without simcall because it is called
 170    by exceptions and logging events */
 171 const char* SIMIX_host_self_get_name(void)
 172 {
 173   smx_host_t host = SIMIX_host_self();
 174   if (host == NULL || SIMIX_process_self() == simix_global->maestro_process)
 175     return "";
 176
 177   return SIMIX_host_get_name(host);
 178 }
 179
 180 xbt_dict_t SIMIX_host_get_properties(smx_host_t host){
 181   return surf_resource_get_properties(surf_workstation_resource_priv(host));
 182 }
 183
 184 double SIMIX_host_get_speed(smx_host_t host){
 185   return surf_workstation_get_speed(host, 1.0);
 186 }
 187
 188 int SIMIX_host_get_core(smx_host_t host){
 189   return surf_workstation_get_core(host);
 190 }
 191
 192 xbt_swag_t SIMIX_host_get_process_list(smx_host_t host){
 193   smx_host_priv_t host_priv = SIMIX_host_priv(host);
 194
 195   return host_priv->process_list;
 196 }
 197
 198
 199 double SIMIX_host_get_available_speed(smx_host_t host){
 200   return surf_workstation_get_available_speed(host);
 201 }
 202
 203 double SIMIX_host_get_current_power_peak(smx_host_t host) {
 204           return surf_workstation_get_current_power_peak(host);
 205 }
 206
 207 double SIMIX_host_get_power_peak_at(smx_host_t host, int pstate_index) {
 208           return surf_workstation_get_power_peak_at(host, pstate_index);
 209 }
 210
 211 int SIMIX_host_get_nb_pstates(smx_host_t host) {
 212           return surf_workstation_get_nb_pstates(host);
 213 }
 214
 215
 216 void SIMIX_host_set_pstate(smx_host_t host, int pstate_index) {
 217           surf_workstation_set_pstate(host, pstate_index);
 218 }
 219 int SIMIX_host_get_pstate(smx_host_t host) {
 220           return surf_workstation_get_pstate(host);
 221 }
 222
 223 double SIMIX_host_get_consumed_energy(smx_host_t host) {
 224           return surf_workstation_get_consumed_energy(host);
 225 }
 226 double SIMIX_host_get_wattmin_at(smx_host_t host,int pstate) {
 227           return surf_workstation_get_wattmin_at(host,pstate);
 228 }
 229 double SIMIX_host_get_wattmax_at(smx_host_t host,int pstate) {
 230           return surf_workstation_get_wattmax_at(host,pstate);
 231 }
 232
 233 int SIMIX_host_get_state(smx_host_t host){
 234   return surf_resource_get_state(surf_workstation_resource_priv(host));
 235 }
 236
 237 void _SIMIX_host_free_process_arg(void *data)
 238 {
 239   smx_process_arg_t arg = *(void**)data;
 240   int i;
 241   for (i = 0; i < arg->argc; i++)
 242     xbt_free(arg->argv[i]);
 243   xbt_free(arg->argv);
 244   xbt_free(arg->name);
 245   xbt_free(arg);
 246 }
 247 /**
 248  * \brief Add a process to the list of the processes that the host will restart when it comes back
 249  * This function add a process to the list of the processes that will be restarted when the host comes
 250  * back. It is expected that this function is called when the host is down.
 251  * The processes will only be restarted once, meaning that you will have to register the process
 252  * again to restart the process again.
 253  */
 254 void SIMIX_host_add_auto_restart_process(smx_host_t host,
 255                                          const char *name,
 256                                          xbt_main_func_t code,
 257                                          void *data,
 258                                          const char *hostname,
 259                                          double kill_time,
 260                                          int argc, char **argv,
 261                                          xbt_dict_t properties,
 262                                          int auto_restart)
 263 {
 264   if (!SIMIX_host_priv(host)->auto_restart_processes) {
 265     SIMIX_host_priv(host)->auto_restart_processes = xbt_dynar_new(sizeof(smx_process_arg_t),_SIMIX_host_free_process_arg);
 266   }
 267   smx_process_arg_t arg = xbt_new(s_smx_process_arg_t,1);
 268   arg->name = xbt_strdup(name);
 269   arg->code = code;
 270   arg->data = data;
 271   arg->hostname = hostname;
 272   arg->kill_time = kill_time;
 273   arg->argc = argc;
 274
 275   arg->argv = xbt_new(char*,argc + 1);
 276
 277   int i;
 278   for (i = 0; i < argc; i++) {
 279     arg->argv[i] = xbt_strdup(argv[i]);
 280   }
 281   arg->argv[argc] = NULL;
 282
 283   arg->properties = properties;
 284   arg->auto_restart = auto_restart;
 285
 286   if( SIMIX_host_get_state(host) == SURF_RESOURCE_OFF
 287       && !xbt_dict_get_or_null(watched_hosts_lib,sg_host_name(host))){
 288     xbt_dict_set(watched_hosts_lib,sg_host_name(host),host,NULL);
 289     XBT_DEBUG("Have pushed host %s to watched_hosts_lib because state == SURF_RESOURCE_OFF",sg_host_name(host));
 290   }
 291   xbt_dynar_push_as(SIMIX_host_priv(host)->auto_restart_processes,smx_process_arg_t,arg);
 292 }
 293 /**
 294  * \brief Restart the list of processes that have been registered to the host
 295  */
 296 void SIMIX_host_restart_processes(smx_host_t host)
 297 {
 298   unsigned int cpt;
 299   smx_process_arg_t arg;
 300   xbt_dynar_t process_list = SIMIX_host_priv(host)->auto_restart_processes;
 301   if (!process_list)
 302     return;
 303
 304   xbt_dynar_foreach (process_list, cpt, arg) {
 305
 306     smx_process_t process;
 307
 308     XBT_DEBUG("Restarting Process %s(%s) right now", arg->argv[0], arg->hostname);
 309     if (simix_global->create_process_function) {
 310       simix_global->create_process_function(&process,
 311                                             arg->argv[0],
 312                                             arg->code,
 313                                             NULL,
 314                                             arg->hostname,
 315                                             arg->kill_time,
 316                                             arg->argc,
 317                                             arg->argv,
 318                                             arg->properties,
 319                                             arg->auto_restart,
 320                                             NULL);
 321     } else {
 322       simcall_process_create(&process,
 323                              arg->argv[0],
 324                              arg->code,
 325                              NULL,
 326                              arg->hostname,
 327                              arg->kill_time,
 328                              arg->argc,
 329                              arg->argv,
 330                              arg->properties,
 331                              arg->auto_restart);
 332
 333     }
 334     /* arg->argv is used by the process created above.  Hide it to
 335      * _SIMIX_host_free_process_arg() which is called by xbt_dynar_reset()
 336      * below. */
 337     arg->argc = 0;
 338     arg->argv = NULL;
 339   }
 340   xbt_dynar_reset(process_list);
 341 }
 342
 343 void SIMIX_host_autorestart(smx_host_t host)
 344 {
 345   if(simix_global->autorestart)
 346     simix_global->autorestart(host);
 347   else
 348     xbt_die("No function for simix_global->autorestart");
 349 }
 350
 351 smx_synchro_t SIMIX_host_execute(const char *name,
 352     smx_host_t host, double flops_amount, double priority, double bound, unsigned long affinity_mask){
 353
 354   /* alloc structures and initialize */
 355   smx_synchro_t synchro = xbt_mallocator_get(simix_global->synchro_mallocator);
 356   synchro->type = SIMIX_SYNC_EXECUTE;
 357   synchro->name = xbt_strdup(name);
 358   synchro->state = SIMIX_RUNNING;
 359   synchro->execution.host = host;
 360   synchro->category = NULL;
 361
 362   /* set surf's action */
 363   if (!MC_is_active() && !MC_record_replay_is_active()) {
 364
 365     synchro->execution.surf_exec = surf_workstation_execute(host, flops_amount);
 366     surf_action_set_data(synchro->execution.surf_exec, synchro);
 367     surf_action_set_priority(synchro->execution.surf_exec, priority);
 368
 369     /* Note (hypervisor): for multicore, the bound value being passed to the
 370      * surf layer should not be zero (i.e., unlimited). It should be the
 371      * capacity of a CPU core. */
 372     if (bound == 0)
 373       surf_cpu_action_set_bound(synchro->execution.surf_exec, SIMIX_host_get_speed(host));
 374     else
 375       surf_cpu_action_set_bound(synchro->execution.surf_exec, bound);
 376
 377     if (affinity_mask != 0) {
 378       /* just a double check to confirm that this host is the host where this task is running. */
 379       xbt_assert(synchro->execution.host == host);
 380       surf_cpu_action_set_affinity(synchro->execution.surf_exec, host, affinity_mask);
 381     }
 382   }
 383
 384   XBT_DEBUG("Create execute synchro %p: %s", synchro, synchro->name);
 385
 386   return synchro;
 387 }
 388
 389 smx_synchro_t SIMIX_host_parallel_execute(const char *name,
 390     int host_nb, smx_host_t *host_list,
 391     double *flops_amount, double *bytes_amount,
 392     double amount, double rate){
 393
 394   void **workstation_list = NULL;
 395   int i;
 396
 397   /* alloc structures and initialize */
 398   smx_synchro_t synchro = xbt_mallocator_get(simix_global->synchro_mallocator);
 399   synchro->type = SIMIX_SYNC_PARALLEL_EXECUTE;
 400   synchro->name = xbt_strdup(name);
 401   synchro->state = SIMIX_RUNNING;
 402   synchro->execution.host = NULL; /* FIXME: do we need the list of hosts? */
 403   synchro->category = NULL;
 404
 405   /* set surf's synchro */
 406   workstation_list = xbt_new0(void *, host_nb);
 407   for (i = 0; i < host_nb; i++)
 408     workstation_list[i] = surf_workstation_resource_priv(host_list[i]);
 409
 410
 411   /* FIXME: what happens if host_list contains VMs and PMs. If
 412    * execute_parallel_task() does not change the state of the model, we can mix
 413    * them. */
 414   surf_model_t ws_model = surf_resource_model(host_list[0], SURF_WKS_LEVEL);
 415   for (i = 1; i < host_nb; i++) {
 416     surf_model_t ws_model_tmp = surf_resource_model(host_list[i], SURF_WKS_LEVEL);
 417     if (ws_model_tmp != ws_model) {
 418       XBT_CRITICAL("mixing VMs and PMs is not supported");
 419       DIE_IMPOSSIBLE;
 420     }
 421   }
 422
 423   /* set surf's synchro */
 424   if (!MC_is_active() && !MC_record_replay_is_active()) {
 425     synchro->execution.surf_exec =
 426       surf_workstation_model_execute_parallel_task((surf_workstation_model_t)surf_workstation_model,
 427                   host_nb, workstation_list, flops_amount, bytes_amount, rate);
 428
 429     surf_action_set_data(synchro->execution.surf_exec, synchro);
 430   }
 431   XBT_DEBUG("Create parallel execute synchro %p", synchro);
 432
 433   return synchro;
 434 }
 435
 436 void SIMIX_host_execution_destroy(smx_synchro_t synchro){
 437   XBT_DEBUG("Destroy synchro %p", synchro);
 438
 439   if (synchro->execution.surf_exec) {
 440     surf_action_unref(synchro->execution.surf_exec);
 441     synchro->execution.surf_exec = NULL;
 442   }
 443   xbt_free(synchro->name);
 444   xbt_mallocator_release(simix_global->synchro_mallocator, synchro);
 445 }
 446
 447 void SIMIX_host_execution_cancel(smx_synchro_t synchro){
 448   XBT_DEBUG("Cancel synchro %p", synchro);
 449
 450   if (synchro->execution.surf_exec)
 451     surf_action_cancel(synchro->execution.surf_exec);
 452 }
 453
 454 double SIMIX_host_execution_get_remains(smx_synchro_t synchro){
 455   double result = 0.0;
 456
 457   if (synchro->state == SIMIX_RUNNING)
 458     result = surf_action_get_remains(synchro->execution.surf_exec);
 459
 460   return result;
 461 }
 462
 463 e_smx_state_t SIMIX_host_execution_get_state(smx_synchro_t synchro){
 464   return synchro->state;
 465 }
 466
 467 void SIMIX_host_execution_set_priority(smx_synchro_t synchro, double priority){
 468
 469   if(synchro->execution.surf_exec)
 470         surf_action_set_priority(synchro->execution.surf_exec, priority);
 471 }
 472
 473 void SIMIX_host_execution_set_bound(smx_synchro_t synchro, double bound){
 474
 475   if(synchro->execution.surf_exec)
 476         surf_cpu_action_set_bound(synchro->execution.surf_exec, bound);
 477 }
 478
 479 void SIMIX_host_execution_set_affinity(smx_synchro_t synchro, smx_host_t host, unsigned long mask){
 480   xbt_assert(synchro->type == SIMIX_SYNC_EXECUTE);
 481
 482   if (synchro->execution.surf_exec) {
 483     /* just a double check to confirm that this host is the host where this task is running. */
 484     xbt_assert(synchro->execution.host == host);
 485     surf_cpu_action_set_affinity(synchro->execution.surf_exec, host, mask);
 486   }
 487 }
 488
 489 void simcall_HANDLER_host_execution_wait(smx_simcall_t simcall, smx_synchro_t synchro){
 490
 491   XBT_DEBUG("Wait for execution of synchro %p, state %d", synchro, (int)synchro->state);
 492
 493   /* Associate this simcall to the synchro */
 494   xbt_fifo_push(synchro->simcalls, simcall);
 495   simcall->issuer->waiting_synchro = synchro;
 496
 497   /* set surf's synchro */
 498   if (MC_is_active() || MC_record_replay_is_active()) {
 499     synchro->state = SIMIX_DONE;
 500     SIMIX_execution_finish(synchro);
 501     return;
 502   }
 503
 504   /* If the synchro is already finished then perform the error handling */
 505   if (synchro->state != SIMIX_RUNNING)
 506     SIMIX_execution_finish(synchro);
 507 }
 508
 509 void SIMIX_host_execution_suspend(smx_synchro_t synchro)
 510 {
 511   if(synchro->execution.surf_exec)
 512     surf_action_suspend(synchro->execution.surf_exec);
 513 }
 514
 515 void SIMIX_host_execution_resume(smx_synchro_t synchro)
 516 {
 517   if(synchro->execution.surf_exec)
 518     surf_action_resume(synchro->execution.surf_exec);
 519 }
 520
 521 void SIMIX_execution_finish(smx_synchro_t synchro)
 522 {
 523   xbt_fifo_item_t item;
 524   smx_simcall_t simcall;
 525
 526   xbt_fifo_foreach(synchro->simcalls, item, simcall, smx_simcall_t) {
 527
 528     switch (synchro->state) {
 529
 530       case SIMIX_DONE:
 531         /* do nothing, synchro done */
 532         XBT_DEBUG("SIMIX_execution_finished: execution successful");
 533         break;
 534
 535       case SIMIX_FAILED:
 536         XBT_DEBUG("SIMIX_execution_finished: host '%s' failed", sg_host_name(simcall->issuer->smx_host));
 537         simcall->issuer->context->iwannadie = 1;
 538         SMX_EXCEPTION(simcall->issuer, host_error, 0, "Host failed");
 539         break;
 540
 541       case SIMIX_CANCELED:
 542         XBT_DEBUG("SIMIX_execution_finished: execution canceled");
 543         SMX_EXCEPTION(simcall->issuer, cancel_error, 0, "Canceled");
 544         break;
 545
 546       default:
 547         xbt_die("Internal error in SIMIX_execution_finish: unexpected synchro state %d",
 548             (int)synchro->state);
 549     }
 550     /* check if the host is down */
 551     if (surf_resource_get_state(surf_workstation_resource_priv(simcall->issuer->smx_host)) != SURF_RESOURCE_ON) {
 552       simcall->issuer->context->iwannadie = 1;
 553     }
 554
 555     simcall->issuer->waiting_synchro =    NULL;
 556     simcall_host_execution_wait__set__result(simcall, synchro->state);
 557     SIMIX_simcall_answer(simcall);
 558   }
 559
 560   /* We no longer need it */
 561   SIMIX_host_execution_destroy(synchro);
 562 }
 563
 564
 565 void SIMIX_post_host_execute(smx_synchro_t synchro)
 566 {
 567   if (synchro->type == SIMIX_SYNC_EXECUTE && /* FIMXE: handle resource failure
 568                                                * for parallel tasks too */
 569       surf_resource_get_state(surf_workstation_resource_priv(synchro->execution.host)) == SURF_RESOURCE_OFF) {
 570     /* If the host running the synchro failed, notice it so that the asking
 571      * process can be killed if it runs on that host itself */
 572     synchro->state = SIMIX_FAILED;
 573   } else if (surf_action_get_state(synchro->execution.surf_exec) == SURF_ACTION_FAILED) {
 574     /* If the host running the synchro didn't fail, then the synchro was
 575      * canceled */
 576     synchro->state = SIMIX_CANCELED;
 577   } else {
 578     synchro->state = SIMIX_DONE;
 579   }
 580
 581   if (synchro->execution.surf_exec) {
 582     surf_action_unref(synchro->execution.surf_exec);
 583     synchro->execution.surf_exec = NULL;
 584   }
 585
 586   /* If there are simcalls associated with the synchro, then answer them */
 587   if (xbt_fifo_size(synchro->simcalls)) {
 588     SIMIX_execution_finish(synchro);
 589   }
 590 }
 591
 592
 593 void SIMIX_set_category(smx_synchro_t synchro, const char *category)
 594 {
 595   if (synchro->state != SIMIX_RUNNING) return;
 596   if (synchro->type == SIMIX_SYNC_EXECUTE){
 597     surf_action_set_category(synchro->execution.surf_exec, category);
 598   }else if (synchro->type == SIMIX_SYNC_COMMUNICATE){
 599     surf_action_set_category(synchro->comm.surf_comm, category);
 600   }
 601 }
 602
 603 /**
 604  * \brief Function to get the parameters of the given the SIMIX host.
 605  *
 606  * \param host the host to get_phys_host (a smx_host_t)
 607  * \param param the parameter object space to be overwritten (a ws_params_t)
 608  */
 609 void SIMIX_host_get_params(smx_host_t ind_vm, ws_params_t params)
 610 {
 611   /* jump to ws_get_params(). */
 612   surf_workstation_get_params(ind_vm, params);
 613 }
 614
 615 void SIMIX_host_set_params(smx_host_t ind_vm, ws_params_t params)
 616 {
 617   /* jump to ws_set_params(). */
 618   surf_workstation_set_params(ind_vm, params);
 619 }
 620
 621 xbt_dict_t SIMIX_host_get_mounted_storage_list(smx_host_t host){
 622   xbt_assert((host != NULL), "Invalid parameters (simix host is NULL)");
 623
 624   return surf_workstation_get_mounted_storage_list(host);
 625 }
 626
 627 xbt_dynar_t SIMIX_host_get_attached_storage_list(smx_host_t host){
 628   xbt_assert((host != NULL), "Invalid parameters (simix host is NULL)");
 629
 630   return surf_workstation_get_attached_storage_list(host);
 631 }