src/simix/smx_host.c

   1 /* Copyright (c) 2007-2013. 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 void SIMIX_pre_host_on(smx_simcall_t simcall, smx_host_t h)
  42 {
  43   SIMIX_host_on(h);
  44 }
  45
  46 /**
  47  * \brief Start the host if it is off
  48  *
  49  */
  50 void SIMIX_host_on(smx_host_t h)
  51 {
  52   smx_host_priv_t host = SIMIX_host_priv(h);
  53
  54   xbt_assert((host != NULL), "Invalid parameters");
  55
  56   if (surf_resource_get_state(surf_workstation_resource_priv(h))==SURF_RESOURCE_OFF) {
  57         surf_resource_set_state(surf_workstation_resource_priv(h), SURF_RESOURCE_ON);
  58     unsigned int cpt;
  59     smx_process_arg_t arg;
  60     xbt_dynar_foreach(host->boot_processes,cpt,arg) {
  61       smx_process_t process;
  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                                               arg->argv[0],
  67                                               arg->code,
  68                                               NULL,
  69                                               arg->hostname,
  70                                               arg->kill_time,
  71                                               arg->argc,
  72                                               arg->argv,
  73                                               arg->properties,
  74                                               arg->auto_restart);
  75       }
  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                                               arg->argv,
  85                                               arg->properties,
  86                                               arg->auto_restart);
  87       }
  88     }
  89   }
  90 }
  91
  92 void SIMIX_pre_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_OFF) {
 108         surf_resource_set_state(surf_workstation_resource_priv(h), SURF_RESOURCE_ON);
 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 ///**
 156 // * \brief Returns a dict of all hosts.
 157 // *
 158 // * \return List of all hosts (as a #xbt_dict_t)
 159 // */
 160 //xbt_dict_t SIMIX_host_get_dict(void)
 161 //{
 162 //  xbt_dict_t host_dict = xbt_dict_new_homogeneous(NULL);
 163 //  xbt_lib_cursor_t cursor = NULL;
 164 //  char *name = NULL;
 165 //  void **host = NULL;
 166 //
 167 //  xbt_lib_foreach(host_lib, cursor, name, host){
 168 //    if(host[SIMIX_HOST_LEVEL])
 169 //            xbt_dict_set(host_dict,name,host[SIMIX_HOST_LEVEL], NULL);
 170 //  }
 171 //  return host_dict;
 172 //}
 173 smx_host_t SIMIX_pre_host_get_by_name(smx_simcall_t simcall, const char *name){
 174    return SIMIX_host_get_by_name(name);
 175 }
 176 smx_host_t SIMIX_host_get_by_name(const char *name){
 177   xbt_assert(((simix_global != NULL)
 178                && (host_lib != NULL)),
 179               "Environment not set yet");
 180
 181   return xbt_lib_get_elm_or_null(host_lib, name);
 182 }
 183
 184 smx_host_t SIMIX_host_self(void)
 185 {
 186   smx_process_t process = SIMIX_process_self();
 187   return (process == NULL) ? NULL : SIMIX_process_get_host(process);
 188 }
 189
 190 const char* SIMIX_pre_host_self_get_name(smx_simcall_t simcall){
 191    return SIMIX_host_self_get_name();
 192 }
 193 /* needs to be public and without simcall because it is called
 194    by exceptions and logging events */
 195 const char* SIMIX_host_self_get_name(void)
 196 {
 197   smx_host_t host = SIMIX_host_self();
 198   if (host == NULL || SIMIX_process_self() == simix_global->maestro_process)
 199     return "";
 200
 201   return SIMIX_host_get_name(host);
 202 }
 203
 204 const char* SIMIX_pre_host_get_name(smx_simcall_t simcall, smx_host_t host){
 205    return SIMIX_host_get_name(host);
 206 }
 207 const char* SIMIX_host_get_name(smx_host_t host){
 208   xbt_assert((host != NULL), "Invalid parameters");
 209
 210   return sg_host_name(host);
 211 }
 212
 213 xbt_dict_t SIMIX_pre_host_get_properties(smx_simcall_t simcall, smx_host_t host){
 214   return SIMIX_host_get_properties(host);
 215 }
 216 xbt_dict_t SIMIX_host_get_properties(smx_host_t host){
 217   xbt_assert((host != NULL), "Invalid parameters (simix host is NULL)");
 218
 219   return surf_resource_get_properties(surf_workstation_resource_priv(host));
 220 }
 221
 222 double SIMIX_pre_host_get_speed(smx_simcall_t simcall, smx_host_t host){
 223   return SIMIX_host_get_speed(host);
 224 }
 225 double SIMIX_host_get_speed(smx_host_t host){
 226   xbt_assert((host != NULL), "Invalid parameters (simix host is NULL)");
 227   return surf_workstation_get_speed(host, 1.0);
 228 }
 229
 230 int SIMIX_pre_host_get_core(smx_simcall_t simcall, smx_host_t host){
 231   return SIMIX_host_get_core(host);
 232 }
 233 int SIMIX_host_get_core(smx_host_t host){
 234   xbt_assert((host != NULL), "Invalid parameters (simix host is NULL)");
 235
 236   return surf_workstation_get_core(host);
 237 }
 238
 239 xbt_swag_t SIMIX_pre_host_get_process_list(smx_simcall_t simcall, smx_host_t host){
 240   return SIMIX_host_get_process_list(host);
 241 }
 242
 243 xbt_swag_t SIMIX_host_get_process_list(smx_host_t host){
 244   xbt_assert((host != NULL), "Invalid parameters (simix host is NULL)");
 245   smx_host_priv_t host_priv = SIMIX_host_priv(host);
 246
 247   return host_priv->process_list;
 248 }
 249
 250
 251 double SIMIX_pre_host_get_available_speed(smx_simcall_t simcall, smx_host_t host){
 252   return SIMIX_host_get_available_speed(host);
 253 }
 254 double SIMIX_host_get_available_speed(smx_host_t host){
 255   xbt_assert((host != NULL), "Invalid parameters (simix host is NULL)");
 256
 257   return surf_workstation_get_available_speed(host);
 258 }
 259
 260 double SIMIX_pre_host_get_current_power_peak(smx_simcall_t simcall, smx_host_t host){
 261   return SIMIX_host_get_current_power_peak(host);
 262 }
 263 double SIMIX_host_get_current_power_peak(smx_host_t host) {
 264           xbt_assert((host != NULL), "Invalid parameters (simix host is NULL)");
 265           return surf_workstation_get_current_power_peak(host);
 266 }
 267
 268 double SIMIX_pre_host_get_power_peak_at(smx_simcall_t simcall, smx_host_t host, int pstate_index){
 269   return SIMIX_host_get_power_peak_at(host, pstate_index);
 270 }
 271 double SIMIX_host_get_power_peak_at(smx_host_t host, int pstate_index) {
 272           xbt_assert((host != NULL), "Invalid parameters (simix host is NULL)");
 273
 274           return surf_workstation_get_power_peak_at(host, pstate_index);
 275 }
 276
 277 int SIMIX_pre_host_get_nb_pstates(smx_simcall_t simcall, smx_host_t host){
 278   return SIMIX_host_get_nb_pstates(host);
 279 }
 280 int SIMIX_host_get_nb_pstates(smx_host_t host) {
 281           xbt_assert((host != NULL), "Invalid parameters (simix host is NULL)");
 282
 283           return surf_workstation_get_nb_pstates(host);
 284 }
 285
 286
 287 void SIMIX_pre_host_set_power_peak_at(smx_simcall_t simcall, smx_host_t host, int pstate_index){
 288   SIMIX_host_set_power_peak_at(host, pstate_index);
 289 }
 290 void SIMIX_host_set_power_peak_at(smx_host_t host, int pstate_index) {
 291           xbt_assert((host != NULL), "Invalid parameters (simix host is NULL)");
 292
 293           surf_workstation_set_power_peak_at(host, pstate_index);
 294 }
 295
 296 double SIMIX_pre_host_get_consumed_energy(smx_simcall_t simcall, smx_host_t host){
 297   return SIMIX_host_get_consumed_energy(host);
 298 }
 299 double SIMIX_host_get_consumed_energy(smx_host_t host) {
 300           xbt_assert((host != NULL), "Invalid parameters (simix host is NULL)");
 301           return surf_workstation_get_consumed_energy(host);
 302 }
 303
 304 int SIMIX_pre_host_get_state(smx_simcall_t simcall, smx_host_t host){
 305   return SIMIX_host_get_state(host);
 306 }
 307 int SIMIX_host_get_state(smx_host_t host){
 308   xbt_assert((host != NULL), "Invalid parameters (simix host is NULL)");
 309
 310   return surf_resource_get_state(surf_workstation_resource_priv(host));
 311 }
 312
 313 void* SIMIX_pre_host_self_get_data(smx_simcall_t simcall){
 314   return SIMIX_host_self_get_data();
 315 }
 316 void* SIMIX_host_self_get_data(void)
 317 {
 318   smx_host_t self = SIMIX_host_self();
 319   return SIMIX_host_get_data(self);
 320 }
 321
 322 void SIMIX_host_self_set_data(void *data)
 323 {
 324   smx_host_t self = SIMIX_host_self();
 325   SIMIX_host_set_data(self, data);
 326 }
 327
 328 void* SIMIX_pre_host_get_data(smx_simcall_t simcall,smx_host_t host){
 329   return SIMIX_host_get_data(host);
 330 }
 331 void* SIMIX_host_get_data(smx_host_t host){
 332   xbt_assert((host != NULL), "Invalid parameters (simix host is NULL)");
 333
 334   return SIMIX_host_priv(host)->data;
 335 }
 336
 337 void _SIMIX_host_free_process_arg(void *data)
 338 {
 339   smx_process_arg_t arg = *(void**)data;
 340   int i;
 341   for (i = 0; i < arg->argc; i++)
 342     xbt_free(arg->argv[i]);
 343   xbt_free(arg->argv);
 344   xbt_free(arg->name);
 345   xbt_free(arg);
 346 }
 347 /**
 348  * \brief Add a process to the list of the processes that the host will restart when it comes back
 349  * This function add a process to the list of the processes that will be restarted when the host comes
 350  * back. It is expected that this function is called when the host is down.
 351  * The processes will only be restarted once, meaning that you will have to register the process
 352  * again to restart the process again.
 353  */
 354 void SIMIX_host_add_auto_restart_process(smx_host_t host,
 355                                          const char *name,
 356                                          xbt_main_func_t code,
 357                                          void *data,
 358                                          const char *hostname,
 359                                          double kill_time,
 360                                          int argc, char **argv,
 361                                          xbt_dict_t properties,
 362                                          int auto_restart)
 363 {
 364   if (!SIMIX_host_priv(host)->auto_restart_processes) {
 365     SIMIX_host_priv(host)->auto_restart_processes = xbt_dynar_new(sizeof(smx_process_arg_t),_SIMIX_host_free_process_arg);
 366   }
 367   smx_process_arg_t arg = xbt_new(s_smx_process_arg_t,1);
 368   arg->name = xbt_strdup(name);
 369   arg->code = code;
 370   arg->data = data;
 371   arg->hostname = hostname;
 372   arg->kill_time = kill_time;
 373   arg->argc = argc;
 374
 375   arg->argv = xbt_new(char*,argc + 1);
 376
 377   int i;
 378   for (i = 0; i < argc; i++) {
 379     arg->argv[i] = xbt_strdup(argv[i]);
 380   }
 381   arg->argv[argc] = NULL;
 382
 383   arg->properties = properties;
 384   arg->auto_restart = auto_restart;
 385
 386   if( SIMIX_host_get_state(host) == SURF_RESOURCE_OFF
 387       && !xbt_dict_get_or_null(watched_hosts_lib,sg_host_name(host))){
 388     xbt_dict_set(watched_hosts_lib,sg_host_name(host),host,NULL);
 389     XBT_DEBUG("Have pushed host %s to watched_hosts_lib because state == SURF_RESOURCE_OFF",sg_host_name(host));
 390   }
 391   xbt_dynar_push_as(SIMIX_host_priv(host)->auto_restart_processes,smx_process_arg_t,arg);
 392 }
 393 /**
 394  * \brief Restart the list of processes that have been registered to the host
 395  */
 396 void SIMIX_host_restart_processes(smx_host_t host)
 397 {
 398   unsigned int cpt;
 399   smx_process_arg_t arg;
 400   xbt_dynar_t process_list = SIMIX_host_priv(host)->auto_restart_processes;
 401   if (!process_list)
 402     return;
 403
 404   xbt_dynar_foreach (process_list, cpt, arg) {
 405
 406     smx_process_t process;
 407
 408     XBT_DEBUG("Restarting Process %s(%s) right now", arg->argv[0], arg->hostname);
 409     if (simix_global->create_process_function) {
 410       simix_global->create_process_function(&process,
 411                                             arg->argv[0],
 412                                             arg->code,
 413                                             NULL,
 414                                             arg->hostname,
 415                                             arg->kill_time,
 416                                             arg->argc,
 417                                             arg->argv,
 418                                             arg->properties,
 419                                             arg->auto_restart);
 420     } else {
 421       simcall_process_create(&process,
 422                              arg->argv[0],
 423                              arg->code,
 424                              NULL,
 425                              arg->hostname,
 426                              arg->kill_time,
 427                              arg->argc,
 428                              arg->argv,
 429                              arg->properties,
 430                              arg->auto_restart);
 431
 432     }
 433     /* arg->argv is used by the process created above.  Hide it to
 434      * _SIMIX_host_free_process_arg() which is called by xbt_dynar_reset()
 435      * below. */
 436     arg->argc = 0;
 437     arg->argv = NULL;
 438   }
 439   xbt_dynar_reset(process_list);
 440 }
 441
 442 void SIMIX_host_autorestart(smx_host_t host)
 443 {
 444   if(simix_global->autorestart)
 445     simix_global->autorestart(host);
 446   else
 447     xbt_die("No function for simix_global->autorestart");
 448 }
 449
 450 void SIMIX_pre_host_set_data(smx_simcall_t simcall, smx_host_t host, void *data) {
 451   SIMIX_host_set_data(host, data);
 452 }
 453 void SIMIX_host_set_data(smx_host_t host, void *data){
 454   xbt_assert((host != NULL), "Invalid parameters");
 455   xbt_assert((SIMIX_host_priv(host)->data == NULL), "Data already set");
 456
 457   SIMIX_host_priv(host)->data = data;
 458 }
 459
 460 smx_action_t SIMIX_pre_host_execute(smx_simcall_t simcall,const char *name,
 461     smx_host_t host, double computation_amount, double priority, double bound, unsigned long affinity_mask){
 462   return SIMIX_host_execute(name, host, computation_amount, priority, bound, affinity_mask);
 463 }
 464 smx_action_t SIMIX_host_execute(const char *name,
 465     smx_host_t host, double computation_amount, double priority, double bound, unsigned long affinity_mask){
 466
 467   /* alloc structures and initialize */
 468   smx_action_t action = xbt_mallocator_get(simix_global->action_mallocator);
 469   action->type = SIMIX_ACTION_EXECUTE;
 470   action->name = xbt_strdup(name);
 471   action->state = SIMIX_RUNNING;
 472   action->execution.host = host;
 473
 474 #ifdef HAVE_TRACING
 475   action->category = NULL;
 476 #endif
 477
 478   /* set surf's action */
 479   if (!MC_is_active()) {
 480
 481     action->execution.surf_exec = surf_workstation_execute(host, computation_amount);
 482     surf_action_set_data(action->execution.surf_exec, action);
 483     surf_action_set_priority(action->execution.surf_exec, priority);
 484
 485     /* Note (hypervisor): for multicore, the bound value being passed to the
 486      * surf layer should not be zero (i.e., unlimited). It should be the
 487      * capacity of a CPU core. */
 488     if (bound == 0)
 489       surf_cpu_action_set_bound(action->execution.surf_exec, SIMIX_host_get_speed(host));
 490     else
 491       surf_cpu_action_set_bound(action->execution.surf_exec, bound);
 492
 493     if (affinity_mask != 0) {
 494       /* just a double check to confirm that this host is the host where this task is running. */
 495       xbt_assert(action->execution.host == host);
 496       surf_cpu_action_set_affinity(action->execution.surf_exec, host, affinity_mask);
 497     }
 498   }
 499
 500   XBT_DEBUG("Create execute action %p", action);
 501
 502   return action;
 503 }
 504
 505 smx_action_t SIMIX_pre_host_parallel_execute(smx_simcall_t simcall, const char *name,
 506     int host_nb, smx_host_t *host_list,
 507     double *computation_amount, double *communication_amount,
 508     double amount, double rate){
 509   return SIMIX_host_parallel_execute(name, host_nb, host_list, computation_amount,
 510                                      communication_amount, amount, rate);
 511 }
 512 smx_action_t SIMIX_host_parallel_execute(const char *name,
 513     int host_nb, smx_host_t *host_list,
 514     double *computation_amount, double *communication_amount,
 515     double amount, double rate){
 516
 517   void **workstation_list = NULL;
 518   int i;
 519
 520   /* alloc structures and initialize */
 521   smx_action_t action = xbt_mallocator_get(simix_global->action_mallocator);
 522   action->type = SIMIX_ACTION_PARALLEL_EXECUTE;
 523   action->name = xbt_strdup(name);
 524   action->state = SIMIX_RUNNING;
 525   action->execution.host = NULL; /* FIXME: do we need the list of hosts? */
 526
 527 #ifdef HAVE_TRACING
 528   action->category = NULL;
 529 #endif
 530
 531   /* set surf's action */
 532   workstation_list = xbt_new0(void *, host_nb);
 533   for (i = 0; i < host_nb; i++)
 534     workstation_list[i] = surf_workstation_resource_priv(host_list[i]);
 535
 536
 537   /* FIXME: what happens if host_list contains VMs and PMs. If
 538    * execute_parallel_task() does not change the state of the model, we can mix
 539    * them. */
 540   surf_model_t ws_model = surf_resource_model(host_list[0], SURF_WKS_LEVEL);
 541   for (i = 1; i < host_nb; i++) {
 542     surf_model_t ws_model_tmp = surf_resource_model(host_list[i], SURF_WKS_LEVEL);
 543     if (ws_model_tmp != ws_model) {
 544       XBT_CRITICAL("mixing VMs and PMs is not supported");
 545       DIE_IMPOSSIBLE;
 546     }
 547   }
 548
 549   /* set surf's action */
 550   if (!MC_is_active()) {
 551     action->execution.surf_exec =
 552       surf_workstation_model_execute_parallel_task((surf_workstation_model_t)surf_workstation_model,
 553                   host_nb, workstation_list, computation_amount, communication_amount, rate);
 554
 555     surf_action_set_data(action->execution.surf_exec, action);
 556   }
 557   XBT_DEBUG("Create parallel execute action %p", action);
 558
 559   return action;
 560 }
 561
 562 //FIXME: REMOVE not used
 563 static surf_model_t get_ws_model_from_action(smx_action_t action)
 564 {
 565   xbt_assert(action->type == SIMIX_ACTION_EXECUTE);
 566   smx_host_t host = action->execution.host;
 567   surf_model_t model = surf_resource_model(host, SURF_WKS_LEVEL);
 568   return model;
 569 }
 570
 571 void SIMIX_pre_host_execution_destroy(smx_simcall_t simcall, smx_action_t action){
 572   SIMIX_host_execution_destroy(action);
 573 }
 574 void SIMIX_host_execution_destroy(smx_action_t action){
 575   XBT_DEBUG("Destroy action %p", action);
 576
 577   if (action->execution.surf_exec) {
 578     surf_action_unref(action->execution.surf_exec);
 579     action->execution.surf_exec = NULL;
 580   }
 581   xbt_free(action->name);
 582   xbt_mallocator_release(simix_global->action_mallocator, action);
 583 }
 584
 585 void SIMIX_pre_host_execution_cancel(smx_simcall_t simcall, smx_action_t action){
 586   SIMIX_host_execution_cancel(action);
 587 }
 588 void SIMIX_host_execution_cancel(smx_action_t action){
 589   XBT_DEBUG("Cancel action %p", action);
 590
 591   if (action->execution.surf_exec)
 592     surf_action_cancel(action->execution.surf_exec);
 593 }
 594
 595 double SIMIX_pre_host_execution_get_remains(smx_simcall_t simcall, smx_action_t action){
 596   return SIMIX_host_execution_get_remains(action);
 597 }
 598 double SIMIX_host_execution_get_remains(smx_action_t action){
 599   double result = 0.0;
 600
 601   if (action->state == SIMIX_RUNNING)
 602     result = surf_action_get_remains(action->execution.surf_exec);
 603
 604   return result;
 605 }
 606
 607 e_smx_state_t SIMIX_pre_host_execution_get_state(smx_simcall_t simcall, smx_action_t action){
 608   return SIMIX_host_execution_get_state(action);
 609 }
 610 e_smx_state_t SIMIX_host_execution_get_state(smx_action_t action){
 611   return action->state;
 612 }
 613
 614 void SIMIX_pre_host_execution_set_priority(smx_simcall_t simcall, smx_action_t action,
 615                                         double priority){
 616   SIMIX_host_execution_set_priority(action, priority);
 617 }
 618 void SIMIX_host_execution_set_priority(smx_action_t action, double priority){
 619
 620   if(action->execution.surf_exec)
 621         surf_action_set_priority(action->execution.surf_exec, priority);
 622 }
 623
 624 void SIMIX_pre_host_execution_set_bound(smx_simcall_t simcall, smx_action_t action,
 625                                         double bound){
 626   SIMIX_host_execution_set_bound(action, bound);
 627 }
 628 void SIMIX_host_execution_set_bound(smx_action_t action, double bound){
 629
 630   if(action->execution.surf_exec)
 631         surf_cpu_action_set_bound(action->execution.surf_exec, bound);
 632 }
 633
 634 void SIMIX_pre_host_execution_set_affinity(smx_simcall_t simcall,
 635     smx_action_t action, smx_host_t host, unsigned long mask){
 636   SIMIX_host_execution_set_affinity(action, host, mask);
 637 }
 638 void SIMIX_host_execution_set_affinity(smx_action_t action, smx_host_t host, unsigned long mask){
 639   xbt_assert(action->type == SIMIX_ACTION_EXECUTE);
 640
 641   if (action->execution.surf_exec) {
 642     /* just a double check to confirm that this host is the host where this task is running. */
 643     xbt_assert(action->execution.host == host);
 644     surf_cpu_action_set_affinity(action->execution.surf_exec, host, mask);
 645   }
 646 }
 647
 648 void SIMIX_pre_host_execution_wait(smx_simcall_t simcall, smx_action_t action){
 649
 650   XBT_DEBUG("Wait for execution of action %p, state %d", action, (int)action->state);
 651
 652   /* Associate this simcall to the action */
 653   xbt_fifo_push(action->simcalls, simcall);
 654   simcall->issuer->waiting_action = action;
 655
 656   /* set surf's action */
 657   if (MC_is_active()) {
 658     action->state = SIMIX_DONE;
 659     SIMIX_execution_finish(action);
 660     return;
 661   }
 662
 663   /* If the action is already finished then perform the error handling */
 664   if (action->state != SIMIX_RUNNING)
 665     SIMIX_execution_finish(action);
 666 }
 667
 668 void SIMIX_host_execution_suspend(smx_action_t action)
 669 {
 670   if(action->execution.surf_exec)
 671     surf_action_suspend(action->execution.surf_exec);
 672 }
 673
 674 void SIMIX_host_execution_resume(smx_action_t action)
 675 {
 676   if(action->execution.surf_exec)
 677     surf_action_resume(action->execution.surf_exec);
 678 }
 679
 680 void SIMIX_execution_finish(smx_action_t action)
 681 {
 682   xbt_fifo_item_t item;
 683   smx_simcall_t simcall;
 684
 685   xbt_fifo_foreach(action->simcalls, item, simcall, smx_simcall_t) {
 686
 687     switch (action->state) {
 688
 689       case SIMIX_DONE:
 690         /* do nothing, action done */
 691   XBT_DEBUG("SIMIX_execution_finished: execution successful");
 692         break;
 693
 694       case SIMIX_FAILED:
 695         XBT_DEBUG("SIMIX_execution_finished: host '%s' failed", sg_host_name(simcall->issuer->smx_host));
 696         simcall->issuer->context->iwannadie = 1;
 697         SMX_EXCEPTION(simcall->issuer, host_error, 0, "Host failed");
 698         break;
 699
 700       case SIMIX_CANCELED:
 701         XBT_DEBUG("SIMIX_execution_finished: execution canceled");
 702         SMX_EXCEPTION(simcall->issuer, cancel_error, 0, "Canceled");
 703         break;
 704
 705       default:
 706         xbt_die("Internal error in SIMIX_execution_finish: unexpected action state %d",
 707             (int)action->state);
 708     }
 709     /* check if the host is down */
 710     if (surf_resource_get_state(surf_workstation_resource_priv(simcall->issuer->smx_host)) != SURF_RESOURCE_ON) {
 711       simcall->issuer->context->iwannadie = 1;
 712     }
 713
 714     simcall->issuer->waiting_action =    NULL;
 715     simcall_host_execution_wait__set__result(simcall, action->state);
 716     SIMIX_simcall_answer(simcall);
 717   }
 718
 719   /* We no longer need it */
 720   SIMIX_host_execution_destroy(action);
 721 }
 722
 723
 724 void SIMIX_post_host_execute(smx_action_t action)
 725 {
 726   if (action->type == SIMIX_ACTION_EXECUTE && /* FIMXE: handle resource failure
 727                                                * for parallel tasks too */
 728       surf_resource_get_state(surf_workstation_resource_priv(action->execution.host)) == SURF_RESOURCE_OFF) {
 729     /* If the host running the action failed, notice it so that the asking
 730      * process can be killed if it runs on that host itself */
 731     action->state = SIMIX_FAILED;
 732   } else if (surf_action_get_state(action->execution.surf_exec) == SURF_ACTION_FAILED) {
 733     /* If the host running the action didn't fail, then the action was
 734      * canceled */
 735     action->state = SIMIX_CANCELED;
 736   } else {
 737     action->state = SIMIX_DONE;
 738   }
 739
 740   if (action->execution.surf_exec) {
 741     surf_action_unref(action->execution.surf_exec);
 742     action->execution.surf_exec = NULL;
 743   }
 744
 745   /* If there are simcalls associated with the action, then answer them */
 746   if (xbt_fifo_size(action->simcalls)) {
 747     SIMIX_execution_finish(action);
 748   }
 749 }
 750
 751
 752 #ifdef HAVE_TRACING
 753 void SIMIX_pre_set_category(smx_simcall_t simcall, smx_action_t action,
 754                             const char *category){
 755   SIMIX_set_category(action, category);
 756 }
 757 void SIMIX_set_category(smx_action_t action, const char *category)
 758 {
 759   if (action->state != SIMIX_RUNNING) return;
 760   if (action->type == SIMIX_ACTION_EXECUTE){
 761     surf_action_set_category(action->execution.surf_exec, category);
 762   }else if (action->type == SIMIX_ACTION_COMMUNICATE){
 763     surf_action_set_category(action->comm.surf_comm, category);
 764   }
 765 }
 766 #endif
 767
 768 /**
 769  * \brief Function to get the parameters of the given the SIMIX host.
 770  *
 771  * \param host the host to get_phys_host (a smx_host_t)
 772  * \param param the parameter object space to be overwritten (a ws_params_t)
 773  */
 774 void SIMIX_host_get_params(smx_host_t ind_vm, ws_params_t params)
 775 {
 776   /* jump to ws_get_params(). */
 777   surf_workstation_get_params(ind_vm, params);
 778 }
 779
 780 void SIMIX_pre_host_get_params(smx_simcall_t simcall, smx_host_t ind_vm, ws_params_t params)
 781 {
 782   SIMIX_host_get_params(ind_vm, params);
 783 }
 784
 785 void SIMIX_host_set_params(smx_host_t ind_vm, ws_params_t params)
 786 {
 787   /* jump to ws_set_params(). */
 788   surf_workstation_set_params(ind_vm, params);
 789 }
 790
 791 void SIMIX_pre_host_set_params(smx_simcall_t simcall, smx_host_t ind_vm, ws_params_t params)
 792 {
 793   SIMIX_host_set_params(ind_vm, params);
 794 }
 795
 796 xbt_dict_t SIMIX_pre_host_get_storage_list(smx_simcall_t simcall, smx_host_t host){
 797   return SIMIX_host_get_storage_list(host);
 798 }
 799
 800 xbt_dict_t SIMIX_host_get_storage_list(smx_host_t host){
 801   xbt_assert((host != NULL), "Invalid parameters (simix host is NULL)");
 802
 803   return surf_workstation_get_storage_list(host);
 804 }