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 const char* SIMIX_host_get_name(smx_host_t host){
 181   xbt_assert((host != NULL), "Invalid parameters");
 182
 183   return sg_host_name(host);
 184 }
 185
 186 xbt_dict_t SIMIX_host_get_properties(smx_host_t host){
 187   xbt_assert((host != NULL), "Invalid parameters (simix host is NULL)");
 188
 189   return surf_resource_get_properties(surf_workstation_resource_priv(host));
 190 }
 191
 192 double SIMIX_host_get_speed(smx_host_t host){
 193   xbt_assert((host != NULL), "Invalid parameters (simix host is NULL)");
 194   return surf_workstation_get_speed(host, 1.0);
 195 }
 196
 197 int SIMIX_host_get_core(smx_host_t host){
 198   xbt_assert((host != NULL), "Invalid parameters (simix host is NULL)");
 199
 200   return surf_workstation_get_core(host);
 201 }
 202
 203 xbt_swag_t SIMIX_host_get_process_list(smx_host_t host){
 204   xbt_assert((host != NULL), "Invalid parameters (simix host is NULL)");
 205   smx_host_priv_t host_priv = SIMIX_host_priv(host);
 206
 207   return host_priv->process_list;
 208 }
 209
 210
 211 double SIMIX_host_get_available_speed(smx_host_t host){
 212   xbt_assert((host != NULL), "Invalid parameters (simix host is NULL)");
 213
 214   return surf_workstation_get_available_speed(host);
 215 }
 216
 217 double SIMIX_host_get_current_power_peak(smx_host_t host) {
 218           xbt_assert((host != NULL), "Invalid parameters (simix host is NULL)");
 219           return surf_workstation_get_current_power_peak(host);
 220 }
 221
 222 double SIMIX_host_get_power_peak_at(smx_host_t host, int pstate_index) {
 223           xbt_assert((host != NULL), "Invalid parameters (simix host is NULL)");
 224
 225           return surf_workstation_get_power_peak_at(host, pstate_index);
 226 }
 227
 228 int SIMIX_host_get_nb_pstates(smx_host_t host) {
 229           xbt_assert((host != NULL), "Invalid parameters (simix host is NULL)");
 230
 231           return surf_workstation_get_nb_pstates(host);
 232 }
 233
 234
 235 void SIMIX_host_set_pstate(smx_host_t host, int pstate_index) {
 236           xbt_assert((host != NULL), "Invalid parameters (simix host is NULL)");
 237
 238           surf_workstation_set_pstate(host, pstate_index);
 239 }
 240 int SIMIX_host_get_pstate(smx_host_t host) {
 241           return surf_workstation_get_pstate(host);
 242 }
 243
 244 double SIMIX_host_get_consumed_energy(smx_host_t host) {
 245           xbt_assert((host != NULL), "Invalid parameters (simix host is NULL)");
 246           return surf_workstation_get_consumed_energy(host);
 247 }
 248
 249 int SIMIX_host_get_state(smx_host_t host){
 250   xbt_assert((host != NULL), "Invalid parameters (simix host is NULL)");
 251
 252   return surf_resource_get_state(surf_workstation_resource_priv(host));
 253 }
 254
 255 void _SIMIX_host_free_process_arg(void *data)
 256 {
 257   smx_process_arg_t arg = *(void**)data;
 258   int i;
 259   for (i = 0; i < arg->argc; i++)
 260     xbt_free(arg->argv[i]);
 261   xbt_free(arg->argv);
 262   xbt_free(arg->name);
 263   xbt_free(arg);
 264 }
 265 /**
 266  * \brief Add a process to the list of the processes that the host will restart when it comes back
 267  * This function add a process to the list of the processes that will be restarted when the host comes
 268  * back. It is expected that this function is called when the host is down.
 269  * The processes will only be restarted once, meaning that you will have to register the process
 270  * again to restart the process again.
 271  */
 272 void SIMIX_host_add_auto_restart_process(smx_host_t host,
 273                                          const char *name,
 274                                          xbt_main_func_t code,
 275                                          void *data,
 276                                          const char *hostname,
 277                                          double kill_time,
 278                                          int argc, char **argv,
 279                                          xbt_dict_t properties,
 280                                          int auto_restart)
 281 {
 282   if (!SIMIX_host_priv(host)->auto_restart_processes) {
 283     SIMIX_host_priv(host)->auto_restart_processes = xbt_dynar_new(sizeof(smx_process_arg_t),_SIMIX_host_free_process_arg);
 284   }
 285   smx_process_arg_t arg = xbt_new(s_smx_process_arg_t,1);
 286   arg->name = xbt_strdup(name);
 287   arg->code = code;
 288   arg->data = data;
 289   arg->hostname = hostname;
 290   arg->kill_time = kill_time;
 291   arg->argc = argc;
 292
 293   arg->argv = xbt_new(char*,argc + 1);
 294
 295   int i;
 296   for (i = 0; i < argc; i++) {
 297     arg->argv[i] = xbt_strdup(argv[i]);
 298   }
 299   arg->argv[argc] = NULL;
 300
 301   arg->properties = properties;
 302   arg->auto_restart = auto_restart;
 303
 304   if( SIMIX_host_get_state(host) == SURF_RESOURCE_OFF
 305       && !xbt_dict_get_or_null(watched_hosts_lib,sg_host_name(host))){
 306     xbt_dict_set(watched_hosts_lib,sg_host_name(host),host,NULL);
 307     XBT_DEBUG("Have pushed host %s to watched_hosts_lib because state == SURF_RESOURCE_OFF",sg_host_name(host));
 308   }
 309   xbt_dynar_push_as(SIMIX_host_priv(host)->auto_restart_processes,smx_process_arg_t,arg);
 310 }
 311 /**
 312  * \brief Restart the list of processes that have been registered to the host
 313  */
 314 void SIMIX_host_restart_processes(smx_host_t host)
 315 {
 316   unsigned int cpt;
 317   smx_process_arg_t arg;
 318   xbt_dynar_t process_list = SIMIX_host_priv(host)->auto_restart_processes;
 319   if (!process_list)
 320     return;
 321
 322   xbt_dynar_foreach (process_list, cpt, arg) {
 323
 324     smx_process_t process;
 325
 326     XBT_DEBUG("Restarting Process %s(%s) right now", arg->argv[0], arg->hostname);
 327     if (simix_global->create_process_function) {
 328       simix_global->create_process_function(&process,
 329                                             arg->argv[0],
 330                                             arg->code,
 331                                             NULL,
 332                                             arg->hostname,
 333                                             arg->kill_time,
 334                                             arg->argc,
 335                                             arg->argv,
 336                                             arg->properties,
 337                                             arg->auto_restart,
 338                                             NULL);
 339     } else {
 340       simcall_process_create(&process,
 341                              arg->argv[0],
 342                              arg->code,
 343                              NULL,
 344                              arg->hostname,
 345                              arg->kill_time,
 346                              arg->argc,
 347                              arg->argv,
 348                              arg->properties,
 349                              arg->auto_restart);
 350
 351     }
 352     /* arg->argv is used by the process created above.  Hide it to
 353      * _SIMIX_host_free_process_arg() which is called by xbt_dynar_reset()
 354      * below. */
 355     arg->argc = 0;
 356     arg->argv = NULL;
 357   }
 358   xbt_dynar_reset(process_list);
 359 }
 360
 361 void SIMIX_host_autorestart(smx_host_t host)
 362 {
 363   if(simix_global->autorestart)
 364     simix_global->autorestart(host);
 365   else
 366     xbt_die("No function for simix_global->autorestart");
 367 }
 368
 369 smx_synchro_t SIMIX_host_execute(const char *name,
 370     smx_host_t host, double flops_amount, double priority, double bound, unsigned long affinity_mask){
 371
 372   /* alloc structures and initialize */
 373   smx_synchro_t synchro = xbt_mallocator_get(simix_global->synchro_mallocator);
 374   synchro->type = SIMIX_SYNC_EXECUTE;
 375   synchro->name = xbt_strdup(name);
 376   synchro->state = SIMIX_RUNNING;
 377   synchro->execution.host = host;
 378   synchro->category = NULL;
 379
 380   /* set surf's action */
 381   if (!MC_is_active() && !MC_record_replay_is_active()) {
 382
 383     synchro->execution.surf_exec = surf_workstation_execute(host, flops_amount);
 384     surf_action_set_data(synchro->execution.surf_exec, synchro);
 385     surf_action_set_priority(synchro->execution.surf_exec, priority);
 386
 387     /* Note (hypervisor): for multicore, the bound value being passed to the
 388      * surf layer should not be zero (i.e., unlimited). It should be the
 389      * capacity of a CPU core. */
 390     if (bound == 0)
 391       surf_cpu_action_set_bound(synchro->execution.surf_exec, SIMIX_host_get_speed(host));
 392     else
 393       surf_cpu_action_set_bound(synchro->execution.surf_exec, bound);
 394
 395     if (affinity_mask != 0) {
 396       /* just a double check to confirm that this host is the host where this task is running. */
 397       xbt_assert(synchro->execution.host == host);
 398       surf_cpu_action_set_affinity(synchro->execution.surf_exec, host, affinity_mask);
 399     }
 400   }
 401
 402   XBT_DEBUG("Create execute synchro %p: %s", synchro, synchro->name);
 403
 404   return synchro;
 405 }
 406
 407 smx_synchro_t SIMIX_host_parallel_execute(const char *name,
 408     int host_nb, smx_host_t *host_list,
 409     double *flops_amount, double *bytes_amount,
 410     double amount, double rate){
 411
 412   void **workstation_list = NULL;
 413   int i;
 414
 415   /* alloc structures and initialize */
 416   smx_synchro_t synchro = xbt_mallocator_get(simix_global->synchro_mallocator);
 417   synchro->type = SIMIX_SYNC_PARALLEL_EXECUTE;
 418   synchro->name = xbt_strdup(name);
 419   synchro->state = SIMIX_RUNNING;
 420   synchro->execution.host = NULL; /* FIXME: do we need the list of hosts? */
 421   synchro->category = NULL;
 422
 423   /* set surf's synchro */
 424   workstation_list = xbt_new0(void *, host_nb);
 425   for (i = 0; i < host_nb; i++)
 426     workstation_list[i] = surf_workstation_resource_priv(host_list[i]);
 427
 428
 429   /* FIXME: what happens if host_list contains VMs and PMs. If
 430    * execute_parallel_task() does not change the state of the model, we can mix
 431    * them. */
 432   surf_model_t ws_model = surf_resource_model(host_list[0], SURF_WKS_LEVEL);
 433   for (i = 1; i < host_nb; i++) {
 434     surf_model_t ws_model_tmp = surf_resource_model(host_list[i], SURF_WKS_LEVEL);
 435     if (ws_model_tmp != ws_model) {
 436       XBT_CRITICAL("mixing VMs and PMs is not supported");
 437       DIE_IMPOSSIBLE;
 438     }
 439   }
 440
 441   /* set surf's synchro */
 442   if (!MC_is_active() && !MC_record_replay_is_active()) {
 443     synchro->execution.surf_exec =
 444       surf_workstation_model_execute_parallel_task((surf_workstation_model_t)surf_workstation_model,
 445                   host_nb, workstation_list, flops_amount, bytes_amount, rate);
 446
 447     surf_action_set_data(synchro->execution.surf_exec, synchro);
 448   }
 449   XBT_DEBUG("Create parallel execute synchro %p", synchro);
 450
 451   return synchro;
 452 }
 453
 454 void SIMIX_host_execution_destroy(smx_synchro_t synchro){
 455   XBT_DEBUG("Destroy synchro %p", synchro);
 456
 457   if (synchro->execution.surf_exec) {
 458     surf_action_unref(synchro->execution.surf_exec);
 459     synchro->execution.surf_exec = NULL;
 460   }
 461   xbt_free(synchro->name);
 462   xbt_mallocator_release(simix_global->synchro_mallocator, synchro);
 463 }
 464
 465 void SIMIX_host_execution_cancel(smx_synchro_t synchro){
 466   XBT_DEBUG("Cancel synchro %p", synchro);
 467
 468   if (synchro->execution.surf_exec)
 469     surf_action_cancel(synchro->execution.surf_exec);
 470 }
 471
 472 double SIMIX_host_execution_get_remains(smx_synchro_t synchro){
 473   double result = 0.0;
 474
 475   if (synchro->state == SIMIX_RUNNING)
 476     result = surf_action_get_remains(synchro->execution.surf_exec);
 477
 478   return result;
 479 }
 480
 481 e_smx_state_t SIMIX_host_execution_get_state(smx_synchro_t synchro){
 482   return synchro->state;
 483 }
 484
 485 void SIMIX_host_execution_set_priority(smx_synchro_t synchro, double priority){
 486
 487   if(synchro->execution.surf_exec)
 488         surf_action_set_priority(synchro->execution.surf_exec, priority);
 489 }
 490
 491 void SIMIX_host_execution_set_bound(smx_synchro_t synchro, double bound){
 492
 493   if(synchro->execution.surf_exec)
 494         surf_cpu_action_set_bound(synchro->execution.surf_exec, bound);
 495 }
 496
 497 void SIMIX_host_execution_set_affinity(smx_synchro_t synchro, smx_host_t host, unsigned long mask){
 498   xbt_assert(synchro->type == SIMIX_SYNC_EXECUTE);
 499
 500   if (synchro->execution.surf_exec) {
 501     /* just a double check to confirm that this host is the host where this task is running. */
 502     xbt_assert(synchro->execution.host == host);
 503     surf_cpu_action_set_affinity(synchro->execution.surf_exec, host, mask);
 504   }
 505 }
 506
 507 void simcall_HANDLER_host_execution_wait(smx_simcall_t simcall, smx_synchro_t synchro){
 508
 509   XBT_DEBUG("Wait for execution of synchro %p, state %d", synchro, (int)synchro->state);
 510
 511   /* Associate this simcall to the synchro */
 512   xbt_fifo_push(synchro->simcalls, simcall);
 513   simcall->issuer->waiting_synchro = synchro;
 514
 515   /* set surf's synchro */
 516   if (MC_is_active() || MC_record_replay_is_active()) {
 517     synchro->state = SIMIX_DONE;
 518     SIMIX_execution_finish(synchro);
 519     return;
 520   }
 521
 522   /* If the synchro is already finished then perform the error handling */
 523   if (synchro->state != SIMIX_RUNNING)
 524     SIMIX_execution_finish(synchro);
 525 }
 526
 527 void SIMIX_host_execution_suspend(smx_synchro_t synchro)
 528 {
 529   if(synchro->execution.surf_exec)
 530     surf_action_suspend(synchro->execution.surf_exec);
 531 }
 532
 533 void SIMIX_host_execution_resume(smx_synchro_t synchro)
 534 {
 535   if(synchro->execution.surf_exec)
 536     surf_action_resume(synchro->execution.surf_exec);
 537 }
 538
 539 void SIMIX_execution_finish(smx_synchro_t synchro)
 540 {
 541   xbt_fifo_item_t item;
 542   smx_simcall_t simcall;
 543
 544   xbt_fifo_foreach(synchro->simcalls, item, simcall, smx_simcall_t) {
 545
 546     switch (synchro->state) {
 547
 548       case SIMIX_DONE:
 549         /* do nothing, synchro done */
 550         XBT_DEBUG("SIMIX_execution_finished: execution successful");
 551         break;
 552
 553       case SIMIX_FAILED:
 554         XBT_DEBUG("SIMIX_execution_finished: host '%s' failed", sg_host_name(simcall->issuer->smx_host));
 555         simcall->issuer->context->iwannadie = 1;
 556         SMX_EXCEPTION(simcall->issuer, host_error, 0, "Host failed");
 557         break;
 558
 559       case SIMIX_CANCELED:
 560         XBT_DEBUG("SIMIX_execution_finished: execution canceled");
 561         SMX_EXCEPTION(simcall->issuer, cancel_error, 0, "Canceled");
 562         break;
 563
 564       default:
 565         xbt_die("Internal error in SIMIX_execution_finish: unexpected synchro state %d",
 566             (int)synchro->state);
 567     }
 568     /* check if the host is down */
 569     if (surf_resource_get_state(surf_workstation_resource_priv(simcall->issuer->smx_host)) != SURF_RESOURCE_ON) {
 570       simcall->issuer->context->iwannadie = 1;
 571     }
 572
 573     simcall->issuer->waiting_synchro =    NULL;
 574     simcall_host_execution_wait__set__result(simcall, synchro->state);
 575     SIMIX_simcall_answer(simcall);
 576   }
 577
 578   /* We no longer need it */
 579   SIMIX_host_execution_destroy(synchro);
 580 }
 581
 582
 583 void SIMIX_post_host_execute(smx_synchro_t synchro)
 584 {
 585   if (synchro->type == SIMIX_SYNC_EXECUTE && /* FIMXE: handle resource failure
 586                                                * for parallel tasks too */
 587       surf_resource_get_state(surf_workstation_resource_priv(synchro->execution.host)) == SURF_RESOURCE_OFF) {
 588     /* If the host running the synchro failed, notice it so that the asking
 589      * process can be killed if it runs on that host itself */
 590     synchro->state = SIMIX_FAILED;
 591   } else if (surf_action_get_state(synchro->execution.surf_exec) == SURF_ACTION_FAILED) {
 592     /* If the host running the synchro didn't fail, then the synchro was
 593      * canceled */
 594     synchro->state = SIMIX_CANCELED;
 595   } else {
 596     synchro->state = SIMIX_DONE;
 597   }
 598
 599   if (synchro->execution.surf_exec) {
 600     surf_action_unref(synchro->execution.surf_exec);
 601     synchro->execution.surf_exec = NULL;
 602   }
 603
 604   /* If there are simcalls associated with the synchro, then answer them */
 605   if (xbt_fifo_size(synchro->simcalls)) {
 606     SIMIX_execution_finish(synchro);
 607   }
 608 }
 609
 610
 611 void SIMIX_set_category(smx_synchro_t synchro, const char *category)
 612 {
 613   if (synchro->state != SIMIX_RUNNING) return;
 614   if (synchro->type == SIMIX_SYNC_EXECUTE){
 615     surf_action_set_category(synchro->execution.surf_exec, category);
 616   }else if (synchro->type == SIMIX_SYNC_COMMUNICATE){
 617     surf_action_set_category(synchro->comm.surf_comm, category);
 618   }
 619 }
 620
 621 /**
 622  * \brief Function to get the parameters of the given the SIMIX host.
 623  *
 624  * \param host the host to get_phys_host (a smx_host_t)
 625  * \param param the parameter object space to be overwritten (a ws_params_t)
 626  */
 627 void SIMIX_host_get_params(smx_host_t ind_vm, ws_params_t params)
 628 {
 629   /* jump to ws_get_params(). */
 630   surf_workstation_get_params(ind_vm, params);
 631 }
 632
 633 void SIMIX_host_set_params(smx_host_t ind_vm, ws_params_t params)
 634 {
 635   /* jump to ws_set_params(). */
 636   surf_workstation_set_params(ind_vm, params);
 637 }
 638
 639 xbt_dict_t SIMIX_host_get_mounted_storage_list(smx_host_t host){
 640   xbt_assert((host != NULL), "Invalid parameters (simix host is NULL)");
 641
 642   return surf_workstation_get_mounted_storage_list(host);
 643 }
 644
 645 xbt_dynar_t SIMIX_host_get_attached_storage_list(smx_host_t host){
 646   xbt_assert((host != NULL), "Invalid parameters (simix host is NULL)");
 647
 648   return surf_workstation_get_attached_storage_list(host);
 649 }