src/simix/smx_host.c

   1 /* Copyright (c) 2007-2012. 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
  13 XBT_LOG_NEW_DEFAULT_SUBCATEGORY(simix_host, simix,
  14                                 "Logging specific to SIMIX (hosts)");
  15
  16 static void SIMIX_execution_finish(smx_action_t action);
  17
  18 /**
  19  * \brief Internal function to create a SIMIX host.
  20  * \param name name of the host to create
  21  * \param workstation the SURF workstation to encapsulate
  22  * \param data some user data (may be NULL)
  23  */
  24 smx_host_t SIMIX_host_create(const char *name,
  25                                void *workstation, void *data)
  26 {
  27   smx_host_priv_t smx_host = xbt_new0(s_smx_host_priv_t, 1);
  28   s_smx_process_t proc;
  29
  30   /* Host structure */
  31   smx_host->data = data;
  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 Internal function to destroy a SIMIX host.
  43  *
  44  * \param h the host to destroy (a smx_host_t)
  45  */
  46 void SIMIX_host_destroy(void *h)
  47 {
  48   smx_host_priv_t host = (smx_host_priv_t) h;
  49
  50   xbt_assert((host != NULL), "Invalid parameters");
  51
  52   /* Clean Simulator data */
  53   if (xbt_swag_size(host->process_list) != 0) {
  54     char *msg = xbt_strdup("Shutting down host, but it's not empty:");
  55     char *tmp;
  56     smx_process_t process = NULL;
  57
  58     xbt_swag_foreach(process, host->process_list) {
  59       tmp = bprintf("%s\n\t%s", msg, process->name);
  60       free(msg);
  61       msg = tmp;
  62     }
  63     SIMIX_display_process_status();
  64     THROWF(arg_error, 0, "%s", msg);
  65   }
  66   xbt_dynar_free(&host->auto_restart_processes);
  67   xbt_swag_free(host->process_list);
  68
  69   /* Clean host structure */
  70   free(host);
  71   return;
  72 }
  73
  74 ///**
  75 // * \brief Returns a dict of all hosts.
  76 // *
  77 // * \return List of all hosts (as a #xbt_dict_t)
  78 // */
  79 //xbt_dict_t SIMIX_host_get_dict(void)
  80 //{
  81 //  xbt_dict_t host_dict = xbt_dict_new_homogeneous(NULL);
  82 //  xbt_lib_cursor_t cursor = NULL;
  83 //  char *name = NULL;
  84 //  void **host = NULL;
  85 //
  86 //  xbt_lib_foreach(host_lib, cursor, name, host){
  87 //    if(host[SIMIX_HOST_LEVEL])
  88 //            xbt_dict_set(host_dict,name,host[SIMIX_HOST_LEVEL], NULL);
  89 //  }
  90 //  return host_dict;
  91 //}
  92 smx_host_t SIMIX_pre_host_get_by_name(smx_simcall_t simcall, const char *name){
  93    return SIMIX_host_get_by_name(name);
  94 }
  95 smx_host_t SIMIX_host_get_by_name(const char *name){
  96   xbt_assert(((simix_global != NULL)
  97                && (host_lib != NULL)),
  98               "Environment not set yet");
  99
 100   return xbt_lib_get_elm_or_null(host_lib, name);
 101 }
 102
 103 smx_host_t SIMIX_host_self(void)
 104 {
 105   smx_process_t process = SIMIX_process_self();
 106   return (process == NULL) ? NULL : SIMIX_process_get_host(process);
 107 }
 108
 109 const char* SIMIX_pre_host_self_get_name(smx_simcall_t simcall){
 110    return SIMIX_host_self_get_name();
 111 }
 112 /* needs to be public and without simcall because it is called
 113    by exceptions and logging events */
 114 const char* SIMIX_host_self_get_name(void)
 115 {
 116   smx_host_t host = SIMIX_host_self();
 117   if (host == NULL || SIMIX_process_self() == simix_global->maestro_process)
 118     return "";
 119
 120   return SIMIX_host_get_name(host);
 121 }
 122
 123 const char* SIMIX_pre_host_get_name(smx_simcall_t simcall, smx_host_t host){
 124    return SIMIX_host_get_name(host);
 125 }
 126 const char* SIMIX_host_get_name(smx_host_t host){
 127   xbt_assert((host != NULL), "Invalid parameters");
 128
 129   return sg_host_name(host);
 130 }
 131
 132 xbt_dict_t SIMIX_pre_host_get_properties(smx_simcall_t simcall, smx_host_t host){
 133   return SIMIX_host_get_properties(host);
 134 }
 135 xbt_dict_t SIMIX_host_get_properties(smx_host_t host){
 136   xbt_assert((host != NULL), "Invalid parameters (simix host is NULL)");
 137
 138   surf_model_t ws_model = surf_resource_model(host, SURF_WKS_LEVEL);
 139   return ws_model->extension.workstation.get_properties(host);
 140 }
 141
 142 double SIMIX_pre_host_get_speed(smx_simcall_t simcall, smx_host_t host){
 143   return SIMIX_host_get_speed(host);
 144 }
 145 double SIMIX_host_get_speed(smx_host_t host){
 146   xbt_assert((host != NULL), "Invalid parameters (simix host is NULL)");
 147
 148   surf_model_t ws_model = surf_resource_model(host, SURF_WKS_LEVEL);
 149   return ws_model->extension.workstation.get_speed(host, 1.0);
 150 }
 151
 152 double SIMIX_pre_host_get_available_speed(smx_simcall_t simcall, smx_host_t host){
 153   return SIMIX_host_get_available_speed(host);
 154 }
 155 double SIMIX_host_get_available_speed(smx_host_t host){
 156   xbt_assert((host != NULL), "Invalid parameters (simix host is NULL)");
 157
 158   surf_model_t ws_model = surf_resource_model(host, SURF_WKS_LEVEL);
 159   return ws_model->extension.workstation.get_available_speed(host);
 160 }
 161
 162 int SIMIX_pre_host_get_state(smx_simcall_t simcall, smx_host_t host){
 163   return SIMIX_host_get_state(host);
 164 }
 165 int SIMIX_host_get_state(smx_host_t host){
 166   xbt_assert((host != NULL), "Invalid parameters (simix host is NULL)");
 167
 168   surf_model_t ws_model = surf_resource_model(host, SURF_WKS_LEVEL);
 169   return ws_model->extension.workstation.get_state(host);
 170 }
 171
 172 void* SIMIX_pre_host_self_get_data(smx_simcall_t simcall){
 173   return SIMIX_host_self_get_data();
 174 }
 175 void* SIMIX_host_self_get_data(void)
 176 {
 177   smx_host_t self = SIMIX_host_self();
 178   return SIMIX_host_get_data(self);
 179 }
 180
 181 void SIMIX_host_self_set_data(void *data)
 182 {
 183   smx_host_t self = SIMIX_host_self();
 184   SIMIX_host_set_data(self, data);
 185 }
 186
 187 void* SIMIX_pre_host_get_data(smx_simcall_t simcall,smx_host_t host){
 188   return SIMIX_host_get_data(host);
 189 }
 190 void* SIMIX_host_get_data(smx_host_t host){
 191   xbt_assert((host != NULL), "Invalid parameters (simix host is NULL)");
 192
 193   return SIMIX_host_priv(host)->data;
 194 }
 195 void _SIMIX_host_free_process_arg(void *);
 196 void _SIMIX_host_free_process_arg(void *data)
 197 {
 198   smx_process_arg_t arg = *(void**)data;
 199   xbt_free(arg->name);
 200   xbt_free(arg);
 201 }
 202 /**
 203  * \brief Add a process to the list of the processes that the host will restart when it comes back
 204  * This function add a process to the list of the processes that will be restarted when the host comes
 205  * back. It is expected that this function is called when the host is down.
 206  * The processes will only be restarted once, meaning that you will have to register the process
 207  * again to restart the process again.
 208  */
 209 void SIMIX_host_add_auto_restart_process(smx_host_t host,
 210                                          const char *name,
 211                                          xbt_main_func_t code,
 212                                          void *data,
 213                                          const char *hostname,
 214                                          double kill_time,
 215                                          int argc, char **argv,
 216                                          xbt_dict_t properties,
 217                                          int auto_restart)
 218 {
 219   if (!SIMIX_host_priv(host)->auto_restart_processes) {
 220     SIMIX_host_priv(host)->auto_restart_processes = xbt_dynar_new(sizeof(smx_process_arg_t),_SIMIX_host_free_process_arg);
 221   }
 222   smx_process_arg_t arg = xbt_new(s_smx_process_arg_t,1);
 223   arg->name = xbt_strdup(name);
 224   arg->code = code;
 225   arg->data = data;
 226   arg->hostname = hostname;
 227   arg->kill_time = kill_time;
 228   arg->argc = argc;
 229
 230   arg->argv = xbt_new(char*,argc + 1);
 231
 232   int i;
 233   for (i = 0; i < argc; i++) {
 234     arg->argv[i] = xbt_strdup(argv[i]);
 235   }
 236   arg->argv[argc] = NULL;
 237
 238   arg->properties = properties;
 239   arg->auto_restart = auto_restart;
 240
 241   if( SIMIX_host_get_state(host) == SURF_RESOURCE_OFF
 242       && !xbt_dict_get_or_null(watched_hosts_lib,sg_host_name(host))){
 243     xbt_dict_set(watched_hosts_lib,sg_host_name(host),host,NULL);
 244     XBT_DEBUG("Have push host %s to watched_hosts_lib because state == SURF_RESOURCE_OFF",sg_host_name(host));
 245   }
 246   xbt_dynar_push_as(SIMIX_host_priv(host)->auto_restart_processes,smx_process_arg_t,arg);
 247 }
 248 /**
 249  * \brief Restart the list of processes that have been registered to the host
 250  */
 251 void SIMIX_host_restart_processes(smx_host_t host)
 252 {
 253   unsigned int cpt;
 254   smx_process_arg_t arg;
 255   xbt_dynar_foreach(SIMIX_host_priv(host)->auto_restart_processes,cpt,arg) {
 256
 257     smx_process_t process;
 258
 259     XBT_DEBUG("Restarting Process %s(%s) right now", arg->argv[0], arg->hostname);
 260     if (simix_global->create_process_function) {
 261       simix_global->create_process_function(&process,
 262                                             arg->argv[0],
 263                                             arg->code,
 264                                             NULL,
 265                                             arg->hostname,
 266                                             arg->kill_time,
 267                                             arg->argc,
 268                                             arg->argv,
 269                                             arg->properties,
 270                                             arg->auto_restart);
 271     }
 272     else {
 273       simcall_process_create(&process,
 274                                             arg->argv[0],
 275                                             arg->code,
 276                                             NULL,
 277                                             arg->hostname,
 278                                             arg->kill_time,
 279                                             arg->argc,
 280                                             arg->argv,
 281                                             arg->properties,
 282                                             arg->auto_restart);
 283
 284     }
 285   }
 286   xbt_dynar_reset(SIMIX_host_priv(host)->auto_restart_processes);
 287 }
 288
 289 void SIMIX_host_autorestart(smx_host_t host)
 290 {
 291   if(simix_global->autorestart)
 292     simix_global->autorestart(host);
 293   else
 294     xbt_die("No function for simix_global->autorestart");
 295 }
 296
 297 void SIMIX_pre_host_set_data(smx_simcall_t simcall, smx_host_t host, void *data) {
 298   SIMIX_host_set_data(host, data);
 299 }
 300 void SIMIX_host_set_data(smx_host_t host, void *data){
 301   xbt_assert((host != NULL), "Invalid parameters");
 302   xbt_assert((SIMIX_host_priv(host)->data == NULL), "Data already set");
 303
 304   SIMIX_host_priv(host)->data = data;
 305 }
 306
 307 smx_action_t SIMIX_pre_host_execute(smx_simcall_t simcall,const char *name,
 308     smx_host_t host, double computation_amount, double priority, double bound){
 309   return SIMIX_host_execute(name, host, computation_amount, priority, bound);
 310 }
 311 smx_action_t SIMIX_host_execute(const char *name,
 312     smx_host_t host, double computation_amount, double priority, double bound){
 313
 314   /* alloc structures and initialize */
 315   smx_action_t action = xbt_mallocator_get(simix_global->action_mallocator);
 316   action->type = SIMIX_ACTION_EXECUTE;
 317   action->name = xbt_strdup(name);
 318   action->state = SIMIX_RUNNING;
 319   action->execution.host = host;
 320
 321 #ifdef HAVE_TRACING
 322   action->category = NULL;
 323 #endif
 324
 325   surf_model_t ws_model = surf_resource_model(host, SURF_WKS_LEVEL);
 326   /* set surf's action */
 327   if (!MC_is_active()) {
 328     action->execution.surf_exec = ws_model->extension.workstation.execute(host, computation_amount);
 329     ws_model->action_data_set(action->execution.surf_exec, action);
 330     ws_model->set_priority(action->execution.surf_exec, priority);
 331     ws_model->set_bound(action->execution.surf_exec, bound);
 332   }
 333
 334   XBT_DEBUG("Create execute action %p", action);
 335
 336   return action;
 337 }
 338
 339 smx_action_t SIMIX_pre_host_parallel_execute(smx_simcall_t simcall, const char *name,
 340     int host_nb, smx_host_t *host_list,
 341     double *computation_amount, double *communication_amount,
 342     double amount, double rate){
 343   return SIMIX_host_parallel_execute(name, host_nb, host_list, computation_amount,
 344                                      communication_amount, amount, rate);
 345 }
 346 smx_action_t SIMIX_host_parallel_execute(const char *name,
 347     int host_nb, smx_host_t *host_list,
 348     double *computation_amount, double *communication_amount,
 349     double amount, double rate){
 350
 351   void **workstation_list = NULL;
 352   int i;
 353
 354   /* alloc structures and initialize */
 355   smx_action_t action = xbt_mallocator_get(simix_global->action_mallocator);
 356   action->type = SIMIX_ACTION_PARALLEL_EXECUTE;
 357   action->name = xbt_strdup(name);
 358   action->state = SIMIX_RUNNING;
 359   action->execution.host = NULL; /* FIXME: do we need the list of hosts? */
 360
 361 #ifdef HAVE_TRACING
 362   action->category = NULL;
 363 #endif
 364
 365   /* set surf's action */
 366   workstation_list = xbt_new0(void *, host_nb);
 367   for (i = 0; i < host_nb; i++)
 368     workstation_list[i] = host_list[i];
 369
 370
 371   /* FIXME: what happens if host_list contains VMs and PMs. If
 372    * execute_parallel_task() does not change the state of the model, we can mix
 373    * them. */
 374   surf_model_t ws_model = surf_resource_model(host_list[0], SURF_WKS_LEVEL);
 375   for (i = 1; i < host_nb; i++) {
 376     surf_model_t ws_model_tmp = surf_resource_model(host_list[i], SURF_WKS_LEVEL);
 377     if (ws_model_tmp != ws_model) {
 378       XBT_CRITICAL("mixing VMs and PMs is not supported");
 379       DIE_IMPOSSIBLE;
 380     }
 381   }
 382
 383   /* set surf's action */
 384   if (!MC_is_active()) {
 385     action->execution.surf_exec =
 386       ws_model->extension.workstation.
 387       execute_parallel_task(host_nb, workstation_list, computation_amount,
 388                       communication_amount, rate);
 389
 390     ws_model->action_data_set(action->execution.surf_exec, action);
 391   }
 392   XBT_DEBUG("Create parallel execute action %p", action);
 393
 394   return action;
 395 }
 396
 397 static surf_model_t get_ws_model_from_action(smx_action_t action)
 398 {
 399   xbt_assert(action->type == SIMIX_ACTION_EXECUTE);
 400   smx_host_t host = action->execution.host;
 401   surf_model_t model = surf_resource_model(host, SURF_WKS_LEVEL);
 402
 403   xbt_assert((model == surf_workstation_model) || (model == surf_vm_workstation_model));
 404
 405   return model;
 406 }
 407
 408 void SIMIX_pre_host_execution_destroy(smx_simcall_t simcall, smx_action_t action){
 409   SIMIX_host_execution_destroy(action);
 410 }
 411 void SIMIX_host_execution_destroy(smx_action_t action){
 412   XBT_DEBUG("Destroy action %p", action);
 413
 414   surf_model_t ws_model = get_ws_model_from_action(action);
 415
 416   if (action->execution.surf_exec) {
 417     ws_model->action_unref(action->execution.surf_exec);
 418     action->execution.surf_exec = NULL;
 419   }
 420   xbt_free(action->name);
 421   xbt_mallocator_release(simix_global->action_mallocator, action);
 422 }
 423
 424 void SIMIX_pre_host_execution_cancel(smx_simcall_t simcall, smx_action_t action){
 425   SIMIX_host_execution_cancel(action);
 426 }
 427 void SIMIX_host_execution_cancel(smx_action_t action){
 428   XBT_DEBUG("Cancel action %p", action);
 429
 430   surf_model_t ws_model = get_ws_model_from_action(action);
 431
 432   if (action->execution.surf_exec)
 433     ws_model->action_cancel(action->execution.surf_exec);
 434 }
 435
 436 double SIMIX_pre_host_execution_get_remains(smx_simcall_t simcall, smx_action_t action){
 437   return SIMIX_host_execution_get_remains(action);
 438 }
 439 double SIMIX_host_execution_get_remains(smx_action_t action){
 440   double result = 0.0;
 441   surf_model_t ws_model = get_ws_model_from_action(action);
 442
 443   if (action->state == SIMIX_RUNNING)
 444     result = ws_model->get_remains(action->execution.surf_exec);
 445
 446   return result;
 447 }
 448
 449 e_smx_state_t SIMIX_pre_host_execution_get_state(smx_simcall_t simcall, smx_action_t action){
 450   return SIMIX_host_execution_get_state(action);
 451 }
 452 e_smx_state_t SIMIX_host_execution_get_state(smx_action_t action){
 453   return action->state;
 454 }
 455
 456 void SIMIX_pre_host_execution_set_priority(smx_simcall_t simcall, smx_action_t action,
 457                                         double priority){
 458   SIMIX_host_execution_set_priority(action, priority);
 459 }
 460 void SIMIX_host_execution_set_priority(smx_action_t action, double priority){
 461   surf_model_t ws_model = get_ws_model_from_action(action);
 462
 463   if(action->execution.surf_exec)
 464     ws_model->set_priority(action->execution.surf_exec, priority);
 465 }
 466
 467 void SIMIX_pre_host_execution_set_bound(smx_simcall_t simcall, smx_action_t action,
 468                                         double bound){
 469   SIMIX_host_execution_set_bound(action, bound);
 470 }
 471 void SIMIX_host_execution_set_bound(smx_action_t action, double bound){
 472   surf_model_t ws_model = get_ws_model_from_action(action);
 473
 474   if(action->execution.surf_exec)
 475     ws_model->set_bound(action->execution.surf_exec, bound);
 476 }
 477
 478 void SIMIX_pre_host_execution_wait(smx_simcall_t simcall, smx_action_t action){
 479
 480   XBT_DEBUG("Wait for execution of action %p, state %d", action, (int)action->state);
 481
 482   /* Associate this simcall to the action */
 483   xbt_fifo_push(action->simcalls, simcall);
 484   simcall->issuer->waiting_action = action;
 485
 486   /* set surf's action */
 487   if (MC_is_active()) {
 488     action->state = SIMIX_DONE;
 489     SIMIX_execution_finish(action);
 490     return;
 491   }
 492
 493   /* If the action is already finished then perform the error handling */
 494   if (action->state != SIMIX_RUNNING)
 495     SIMIX_execution_finish(action);
 496 }
 497
 498 void SIMIX_host_execution_suspend(smx_action_t action)
 499 {
 500   surf_model_t ws_model = get_ws_model_from_action(action);
 501
 502   if(action->execution.surf_exec)
 503     ws_model->suspend(action->execution.surf_exec);
 504 }
 505
 506 void SIMIX_host_execution_resume(smx_action_t action)
 507 {
 508   surf_model_t ws_model = get_ws_model_from_action(action);
 509
 510   if(action->execution.surf_exec)
 511     ws_model->resume(action->execution.surf_exec);
 512 }
 513
 514 void SIMIX_execution_finish(smx_action_t action)
 515 {
 516   xbt_fifo_item_t item;
 517   smx_simcall_t simcall;
 518   surf_model_t ws_model = get_ws_model_from_action(action);
 519
 520   xbt_fifo_foreach(action->simcalls, item, simcall, smx_simcall_t) {
 521
 522     switch (action->state) {
 523
 524       case SIMIX_DONE:
 525         /* do nothing, action done */
 526   XBT_DEBUG("SIMIX_execution_finished: execution successful");
 527         break;
 528
 529       case SIMIX_FAILED:
 530         XBT_DEBUG("SIMIX_execution_finished: host '%s' failed", sg_host_name(simcall->issuer->smx_host));
 531         simcall->issuer->context->iwannadie = 1;
 532         //SMX_EXCEPTION(simcall->issuer, host_error, 0, "Host failed");
 533         break;
 534
 535       case SIMIX_CANCELED:
 536         XBT_DEBUG("SIMIX_execution_finished: execution canceled");
 537         SMX_EXCEPTION(simcall->issuer, cancel_error, 0, "Canceled");
 538         break;
 539
 540       default:
 541         xbt_die("Internal error in SIMIX_execution_finish: unexpected action state %d",
 542             (int)action->state);
 543     }
 544     /* check if the host is down */
 545     if (ws_model->extension.workstation.get_state(simcall->issuer->smx_host) != SURF_RESOURCE_ON) {
 546       simcall->issuer->context->iwannadie = 1;
 547     }
 548
 549     simcall->issuer->waiting_action =    NULL;
 550     simcall_host_execution_wait__set__result(simcall, action->state);
 551     SIMIX_simcall_answer(simcall);
 552   }
 553
 554   /* We no longer need it */
 555   SIMIX_host_execution_destroy(action);
 556 }
 557
 558
 559 void SIMIX_post_host_execute(smx_action_t action)
 560 {
 561   surf_model_t ws_model = get_ws_model_from_action(action);
 562
 563   if (action->type == SIMIX_ACTION_EXECUTE && /* FIMXE: handle resource failure
 564                                                * for parallel tasks too */
 565       ws_model->extension.workstation.get_state(action->execution.host) == SURF_RESOURCE_OFF) {
 566     /* If the host running the action failed, notice it so that the asking
 567      * process can be killed if it runs on that host itself */
 568     action->state = SIMIX_FAILED;
 569   } else if (ws_model->action_state_get(action->execution.surf_exec) == SURF_ACTION_FAILED) {
 570     /* If the host running the action didn't fail, then the action was
 571      * canceled */
 572     action->state = SIMIX_CANCELED;
 573   } else {
 574     action->state = SIMIX_DONE;
 575   }
 576
 577   if (action->execution.surf_exec) {
 578     ws_model->action_unref(action->execution.surf_exec);
 579     action->execution.surf_exec = NULL;
 580   }
 581
 582   /* If there are simcalls associated with the action, then answer them */
 583   if (xbt_fifo_size(action->simcalls)) {
 584     SIMIX_execution_finish(action);
 585   }
 586 }
 587
 588
 589 #ifdef HAVE_TRACING
 590 void SIMIX_pre_set_category(smx_simcall_t simcall, smx_action_t action,
 591                             const char *category){
 592   SIMIX_set_category(action, category);
 593 }
 594 void SIMIX_set_category(smx_action_t action, const char *category)
 595 {
 596   surf_model_t ws_model = get_ws_model_from_action(action);
 597
 598   if (action->state != SIMIX_RUNNING) return;
 599   if (action->type == SIMIX_ACTION_EXECUTE){
 600     ws_model->set_category(action->execution.surf_exec, category);
 601   }else if (action->type == SIMIX_ACTION_COMMUNICATE){
 602     ws_model->set_category(action->comm.surf_comm, category);
 603   }
 604 }
 605 #endif
 606
 607
 608 /**
 609  * \brief Function to get the parameters of the given the SIMIX host.
 610  *
 611  * \param host the host to get_phys_host (a smx_host_t)
 612  * \param param the parameter object space to be overwritten (a ws_params_t)
 613  */
 614 void SIMIX_host_get_params(smx_host_t ind_vm, ws_params_t params)
 615 {
 616   /* jump to ws_get_params(). */
 617   surf_workstation_model->extension.workstation.get_params(ind_vm, params);
 618 }
 619
 620 void SIMIX_pre_host_get_params(smx_simcall_t simcall, smx_host_t ind_vm, ws_params_t params)
 621 {
 622   SIMIX_host_get_params(ind_vm, params);
 623   SIMIX_simcall_answer(simcall);
 624 }
 625
 626 void SIMIX_host_set_params(smx_host_t ind_vm, ws_params_t params)
 627 {
 628   /* jump to ws_set_params(). */
 629   surf_workstation_model->extension.workstation.set_params(ind_vm, params);
 630 }
 631
 632 void SIMIX_pre_host_set_params(smx_simcall_t simcall, smx_host_t ind_vm, ws_params_t params)
 633 {
 634   SIMIX_host_set_params(ind_vm, params);
 635   SIMIX_simcall_answer(simcall);
 636 }