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_or_null(host_lib, name, SIMIX_HOST_LEVEL);
  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   surf_model_t ws_model = surf_resource_model(h, SURF_WKS_LEVEL);
  57   if (ws_model->extension.workstation.get_state(h)==SURF_RESOURCE_OFF) {
  58     ws_model->extension.workstation.set_state(h, SURF_RESOURCE_ON);
  59     unsigned int cpt;
  60     smx_process_arg_t arg;
  61     xbt_dynar_foreach(host->boot_processes,cpt,arg) {
  62       smx_process_t process;
  63
  64       XBT_DEBUG("Booting Process %s(%s) right now", arg->argv[0], arg->hostname);
  65       if (simix_global->create_process_function) {
  66         simix_global->create_process_function(&process,
  67                                               arg->argv[0],
  68                                               arg->code,
  69                                               NULL,
  70                                               arg->hostname,
  71                                               arg->kill_time,
  72                                               arg->argc,
  73                                               arg->argv,
  74                                               arg->properties,
  75                                               arg->auto_restart);
  76       }
  77       else {
  78         simcall_process_create(&process,
  79                                               arg->argv[0],
  80                                               arg->code,
  81                                               NULL,
  82                                               arg->hostname,
  83                                               arg->kill_time,
  84                                               arg->argc,
  85                                               arg->argv,
  86                                               arg->properties,
  87                                               arg->auto_restart);
  88       }
  89     }
  90   }
  91 }
  92
  93 void SIMIX_pre_host_off(smx_simcall_t simcall, smx_host_t h)
  94 {
  95   SIMIX_host_off(h, simcall->issuer);
  96 }
  97
  98 /**
  99  * \brief Stop the host if it is on
 100  *
 101  */
 102 void SIMIX_host_off(smx_host_t h, smx_process_t issuer)
 103 {
 104   smx_host_priv_t host = SIMIX_host_priv(h);
 105
 106   xbt_assert((host != NULL), "Invalid parameters");
 107
 108   surf_model_t ws_model = surf_resource_model(h, SURF_WKS_LEVEL);
 109   if (ws_model->extension.workstation.get_state(h)==SURF_RESOURCE_ON) {
 110     ws_model->extension.workstation.set_state(h, SURF_RESOURCE_OFF);
 111
 112     /* Clean Simulator data */
 113     if (xbt_swag_size(host->process_list) != 0) {
 114       smx_process_t process = NULL;
 115       xbt_swag_foreach(process, host->process_list) {
 116         SIMIX_process_kill(process, issuer);
 117         XBT_DEBUG("Killing %s on %s by %s", process->name,  sg_host_name(process->smx_host), issuer->name);
 118       }
 119     }
 120   }
 121 }
 122
 123 /**
 124  * \brief Internal function to destroy a SIMIX host.
 125  *
 126  * \param h the host to destroy (a smx_host_t)
 127  */
 128 void SIMIX_host_destroy(void *h)
 129 {
 130   smx_host_priv_t host = (smx_host_priv_t) h;
 131
 132   xbt_assert((host != NULL), "Invalid parameters");
 133
 134   /* Clean Simulator data */
 135   if (xbt_swag_size(host->process_list) != 0) {
 136     char *msg = xbt_strdup("Shutting down host, but it's not empty:");
 137     char *tmp;
 138     smx_process_t process = NULL;
 139
 140     xbt_swag_foreach(process, host->process_list) {
 141       tmp = bprintf("%s\n\t%s", msg, process->name);
 142       free(msg);
 143       msg = tmp;
 144     }
 145     SIMIX_display_process_status();
 146     THROWF(arg_error, 0, "%s", msg);
 147   }
 148   xbt_dynar_free(&host->auto_restart_processes);
 149   xbt_dynar_free(&host->boot_processes);
 150   xbt_swag_free(host->process_list);
 151
 152   /* Clean host structure */
 153   free(host);
 154   return;
 155 }
 156
 157 ///**
 158 // * \brief Returns a dict of all hosts.
 159 // *
 160 // * \return List of all hosts (as a #xbt_dict_t)
 161 // */
 162 //xbt_dict_t SIMIX_host_get_dict(void)
 163 //{
 164 //  xbt_dict_t host_dict = xbt_dict_new_homogeneous(NULL);
 165 //  xbt_lib_cursor_t cursor = NULL;
 166 //  char *name = NULL;
 167 //  void **host = NULL;
 168 //
 169 //  xbt_lib_foreach(host_lib, cursor, name, host){
 170 //    if(host[SIMIX_HOST_LEVEL])
 171 //            xbt_dict_set(host_dict,name,host[SIMIX_HOST_LEVEL], NULL);
 172 //  }
 173 //  return host_dict;
 174 //}
 175 smx_host_t SIMIX_pre_host_get_by_name(smx_simcall_t simcall, const char *name){
 176    return SIMIX_host_get_by_name(name);
 177 }
 178 smx_host_t SIMIX_host_get_by_name(const char *name){
 179   xbt_assert(((simix_global != NULL)
 180                && (host_lib != NULL)),
 181               "Environment not set yet");
 182
 183   return xbt_lib_get_elm_or_null(host_lib, name);
 184 }
 185
 186 smx_host_t SIMIX_host_self(void)
 187 {
 188   smx_process_t process = SIMIX_process_self();
 189   return (process == NULL) ? NULL : SIMIX_process_get_host(process);
 190 }
 191
 192 const char* SIMIX_pre_host_self_get_name(smx_simcall_t simcall){
 193    return SIMIX_host_self_get_name();
 194 }
 195 /* needs to be public and without simcall because it is called
 196    by exceptions and logging events */
 197 const char* SIMIX_host_self_get_name(void)
 198 {
 199   smx_host_t host = SIMIX_host_self();
 200   if (host == NULL || SIMIX_process_self() == simix_global->maestro_process)
 201     return "";
 202
 203   return SIMIX_host_get_name(host);
 204 }
 205
 206 const char* SIMIX_pre_host_get_name(smx_simcall_t simcall, smx_host_t host){
 207    return SIMIX_host_get_name(host);
 208 }
 209 const char* SIMIX_host_get_name(smx_host_t host){
 210   xbt_assert((host != NULL), "Invalid parameters");
 211
 212   return sg_host_name(host);
 213 }
 214
 215 xbt_dict_t SIMIX_pre_host_get_properties(smx_simcall_t simcall, smx_host_t host){
 216   return SIMIX_host_get_properties(host);
 217 }
 218 xbt_dict_t SIMIX_host_get_properties(smx_host_t host){
 219   xbt_assert((host != NULL), "Invalid parameters (simix host is NULL)");
 220
 221   surf_model_t ws_model = surf_resource_model(host, SURF_WKS_LEVEL);
 222   return ws_model->extension.workstation.get_properties(host);
 223 }
 224
 225 double SIMIX_pre_host_get_speed(smx_simcall_t simcall, smx_host_t host){
 226   return SIMIX_host_get_speed(host);
 227 }
 228 double SIMIX_host_get_speed(smx_host_t host){
 229   xbt_assert((host != NULL), "Invalid parameters (simix host is NULL)");
 230
 231   surf_model_t ws_model = surf_resource_model(host, SURF_WKS_LEVEL);
 232   return ws_model->extension.workstation.get_speed(host, 1.0);
 233 }
 234
 235 int SIMIX_pre_host_get_core(smx_simcall_t simcall, smx_host_t host){
 236   return SIMIX_host_get_core(host);
 237 }
 238 int SIMIX_host_get_core(smx_host_t host){
 239   xbt_assert((host != NULL), "Invalid parameters (simix host is NULL)");
 240
 241   return surf_workstation_model->extension.workstation.
 242       get_core(host);
 243 }
 244
 245 xbt_swag_t SIMIX_pre_host_get_process_list(smx_simcall_t simcall, smx_host_t host){
 246   return SIMIX_host_get_process_list(host);
 247 }
 248
 249 xbt_swag_t SIMIX_host_get_process_list(smx_host_t host){
 250   xbt_assert((host != NULL), "Invalid parameters (simix host is NULL)");
 251   smx_host_priv_t host_priv = SIMIX_host_priv(host);
 252
 253   return host_priv->process_list;
 254 }
 255
 256
 257 double SIMIX_pre_host_get_available_speed(smx_simcall_t simcall, smx_host_t host){
 258   return SIMIX_host_get_available_speed(host);
 259 }
 260 double SIMIX_host_get_available_speed(smx_host_t host){
 261   xbt_assert((host != NULL), "Invalid parameters (simix host is NULL)");
 262
 263   surf_model_t ws_model = surf_resource_model(host, SURF_WKS_LEVEL);
 264   return ws_model->extension.workstation.get_available_speed(host);
 265 }
 266
 267 double SIMIX_pre_host_get_current_power_peak(smx_simcall_t simcall, smx_host_t host){
 268   return SIMIX_host_get_current_power_peak(host);
 269 }
 270 double SIMIX_host_get_current_power_peak(smx_host_t host) {
 271           xbt_assert((host != NULL), "Invalid parameters (simix host is NULL)");
 272           return surf_workstation_model->extension.workstation.
 273                       get_current_power_peak(host);
 274 }
 275
 276 double SIMIX_pre_host_get_power_peak_at(smx_simcall_t simcall, smx_host_t host, int pstate_index){
 277   return SIMIX_host_get_power_peak_at(host, pstate_index);
 278 }
 279 double SIMIX_host_get_power_peak_at(smx_host_t host, int pstate_index) {
 280           xbt_assert((host != NULL), "Invalid parameters (simix host is NULL)");
 281
 282           return surf_workstation_model->extension.workstation.
 283               get_power_peak_at(host, pstate_index);
 284 }
 285
 286 int SIMIX_pre_host_get_nb_pstates(smx_simcall_t simcall, smx_host_t host){
 287   return SIMIX_host_get_nb_pstates(host);
 288 }
 289 int SIMIX_host_get_nb_pstates(smx_host_t host) {
 290           xbt_assert((host != NULL), "Invalid parameters (simix host is NULL)");
 291
 292           return surf_workstation_model->extension.workstation.
 293               get_nb_pstates(host);
 294 }
 295
 296
 297 void SIMIX_pre_host_set_power_peak_at(smx_simcall_t simcall, smx_host_t host, int pstate_index){
 298   SIMIX_host_set_power_peak_at(host, pstate_index);
 299 }
 300 void SIMIX_host_set_power_peak_at(smx_host_t host, int pstate_index) {
 301           xbt_assert((host != NULL), "Invalid parameters (simix host is NULL)");
 302
 303           surf_workstation_model->extension.workstation.
 304               set_power_peak_at(host, pstate_index);
 305 }
 306
 307 double SIMIX_pre_host_get_consumed_energy(smx_simcall_t simcall, smx_host_t host){
 308   return SIMIX_host_get_consumed_energy(host);
 309 }
 310 double SIMIX_host_get_consumed_energy(smx_host_t host) {
 311           xbt_assert((host != NULL), "Invalid parameters (simix host is NULL)");
 312           return surf_workstation_model->extension.workstation.
 313                       get_consumed_energy(host);
 314 }
 315
 316 int SIMIX_pre_host_get_state(smx_simcall_t simcall, smx_host_t host){
 317   return SIMIX_host_get_state(host);
 318 }
 319 int SIMIX_host_get_state(smx_host_t host){
 320   xbt_assert((host != NULL), "Invalid parameters (simix host is NULL)");
 321
 322   surf_model_t ws_model = surf_resource_model(host, SURF_WKS_LEVEL);
 323   return ws_model->extension.workstation.get_state(host);
 324 }
 325
 326 void* SIMIX_pre_host_self_get_data(smx_simcall_t simcall){
 327   return SIMIX_host_self_get_data();
 328 }
 329 void* SIMIX_host_self_get_data(void)
 330 {
 331   smx_host_t self = SIMIX_host_self();
 332   return SIMIX_host_get_data(self);
 333 }
 334
 335 void SIMIX_host_self_set_data(void *data)
 336 {
 337   smx_host_t self = SIMIX_host_self();
 338   SIMIX_host_set_data(self, data);
 339 }
 340
 341 void* SIMIX_pre_host_get_data(smx_simcall_t simcall,smx_host_t host){
 342   return SIMIX_host_get_data(host);
 343 }
 344 void* SIMIX_host_get_data(smx_host_t host){
 345   xbt_assert((host != NULL), "Invalid parameters (simix host is NULL)");
 346
 347   return SIMIX_host_priv(host)->data;
 348 }
 349
 350 void _SIMIX_host_free_process_arg(void *data)
 351 {
 352   smx_process_arg_t arg = *(void**)data;
 353   int i;
 354   for (i = 0; i < arg->argc; i++)
 355     xbt_free(arg->argv[i]);
 356   xbt_free(arg->argv);
 357   xbt_free(arg->name);
 358   xbt_free(arg);
 359 }
 360 /**
 361  * \brief Add a process to the list of the processes that the host will restart when it comes back
 362  * This function add a process to the list of the processes that will be restarted when the host comes
 363  * back. It is expected that this function is called when the host is down.
 364  * The processes will only be restarted once, meaning that you will have to register the process
 365  * again to restart the process again.
 366  */
 367 void SIMIX_host_add_auto_restart_process(smx_host_t host,
 368                                          const char *name,
 369                                          xbt_main_func_t code,
 370                                          void *data,
 371                                          const char *hostname,
 372                                          double kill_time,
 373                                          int argc, char **argv,
 374                                          xbt_dict_t properties,
 375                                          int auto_restart)
 376 {
 377   if (!SIMIX_host_priv(host)->auto_restart_processes) {
 378     SIMIX_host_priv(host)->auto_restart_processes = xbt_dynar_new(sizeof(smx_process_arg_t),_SIMIX_host_free_process_arg);
 379   }
 380   smx_process_arg_t arg = xbt_new(s_smx_process_arg_t,1);
 381   arg->name = xbt_strdup(name);
 382   arg->code = code;
 383   arg->data = data;
 384   arg->hostname = hostname;
 385   arg->kill_time = kill_time;
 386   arg->argc = argc;
 387
 388   arg->argv = xbt_new(char*,argc + 1);
 389
 390   int i;
 391   for (i = 0; i < argc; i++) {
 392     arg->argv[i] = xbt_strdup(argv[i]);
 393   }
 394   arg->argv[argc] = NULL;
 395
 396   arg->properties = properties;
 397   arg->auto_restart = auto_restart;
 398
 399   if( SIMIX_host_get_state(host) == SURF_RESOURCE_OFF
 400       && !xbt_dict_get_or_null(watched_hosts_lib,sg_host_name(host))){
 401     xbt_dict_set(watched_hosts_lib,sg_host_name(host),host,NULL);
 402     XBT_DEBUG("Have pushed host %s to watched_hosts_lib because state == SURF_RESOURCE_OFF",sg_host_name(host));
 403   }
 404   xbt_dynar_push_as(SIMIX_host_priv(host)->auto_restart_processes,smx_process_arg_t,arg);
 405 }
 406 /**
 407  * \brief Restart the list of processes that have been registered to the host
 408  */
 409 void SIMIX_host_restart_processes(smx_host_t host)
 410 {
 411   unsigned int cpt;
 412   smx_process_arg_t arg;
 413   xbt_dynar_t process_list = SIMIX_host_priv(host)->auto_restart_processes;
 414   if (!process_list)
 415     return;
 416
 417   xbt_dynar_foreach (process_list, cpt, arg) {
 418
 419     smx_process_t process;
 420
 421     XBT_DEBUG("Restarting Process %s(%s) right now", arg->argv[0], arg->hostname);
 422     if (simix_global->create_process_function) {
 423       simix_global->create_process_function(&process,
 424                                             arg->argv[0],
 425                                             arg->code,
 426                                             NULL,
 427                                             arg->hostname,
 428                                             arg->kill_time,
 429                                             arg->argc,
 430                                             arg->argv,
 431                                             arg->properties,
 432                                             arg->auto_restart);
 433     } else {
 434       simcall_process_create(&process,
 435                              arg->argv[0],
 436                              arg->code,
 437                              NULL,
 438                              arg->hostname,
 439                              arg->kill_time,
 440                              arg->argc,
 441                              arg->argv,
 442                              arg->properties,
 443                              arg->auto_restart);
 444
 445     }
 446     /* arg->argv is used by the process created above.  Hide it to
 447      * _SIMIX_host_free_process_arg() which is called by xbt_dynar_reset()
 448      * below. */
 449     arg->argc = 0;
 450     arg->argv = NULL;
 451   }
 452   xbt_dynar_reset(process_list);
 453 }
 454
 455 void SIMIX_host_autorestart(smx_host_t host)
 456 {
 457   if(simix_global->autorestart)
 458     simix_global->autorestart(host);
 459   else
 460     xbt_die("No function for simix_global->autorestart");
 461 }
 462
 463 void SIMIX_pre_host_set_data(smx_simcall_t simcall, smx_host_t host, void *data) {
 464   SIMIX_host_set_data(host, data);
 465 }
 466 void SIMIX_host_set_data(smx_host_t host, void *data){
 467   xbt_assert((host != NULL), "Invalid parameters");
 468   xbt_assert((SIMIX_host_priv(host)->data == NULL), "Data already set");
 469
 470   SIMIX_host_priv(host)->data = data;
 471 }
 472
 473 smx_action_t SIMIX_pre_host_execute(smx_simcall_t simcall,const char *name,
 474     smx_host_t host, double computation_amount, double priority, double bound, unsigned long affinity_mask){
 475   return SIMIX_host_execute(name, host, computation_amount, priority, bound, affinity_mask);
 476 }
 477 smx_action_t SIMIX_host_execute(const char *name,
 478     smx_host_t host, double computation_amount, double priority, double bound, unsigned long affinity_mask){
 479
 480   /* alloc structures and initialize */
 481   smx_action_t action = xbt_mallocator_get(simix_global->action_mallocator);
 482   action->type = SIMIX_ACTION_EXECUTE;
 483   action->name = xbt_strdup(name);
 484   action->state = SIMIX_RUNNING;
 485   action->execution.host = host;
 486
 487 #ifdef HAVE_TRACING
 488   action->category = NULL;
 489 #endif
 490
 491   surf_model_t ws_model = surf_resource_model(host, SURF_WKS_LEVEL);
 492   /* set surf's action */
 493   if (!MC_is_active()) {
 494     action->execution.surf_exec = ws_model->extension.workstation.execute(host, computation_amount);
 495     ws_model->action_data_set(action->execution.surf_exec, action);
 496     ws_model->set_priority(action->execution.surf_exec, priority);
 497
 498     /* Note (hypervisor): for multicore, the bound value being passed to the
 499      * surf layer should not be zero (i.e., unlimited). It should be the
 500      * capacity of a CPU core. */
 501     if (bound == 0)
 502       ws_model->set_bound(action->execution.surf_exec, SIMIX_host_get_speed(host));
 503     else
 504       ws_model->set_bound(action->execution.surf_exec, bound);
 505
 506     if (affinity_mask != 0) {
 507       /* just a double check to confirm that this host is the host where this task is running. */
 508       xbt_assert(action->execution.host == host);
 509       ws_model->set_affinity(action->execution.surf_exec, host, affinity_mask);
 510     }
 511   }
 512
 513   XBT_DEBUG("Create execute action %p", action);
 514
 515   return action;
 516 }
 517
 518 smx_action_t SIMIX_pre_host_parallel_execute(smx_simcall_t simcall, const char *name,
 519     int host_nb, smx_host_t *host_list,
 520     double *computation_amount, double *communication_amount,
 521     double amount, double rate){
 522   return SIMIX_host_parallel_execute(name, host_nb, host_list, computation_amount,
 523                                      communication_amount, amount, rate);
 524 }
 525 smx_action_t SIMIX_host_parallel_execute(const char *name,
 526     int host_nb, smx_host_t *host_list,
 527     double *computation_amount, double *communication_amount,
 528     double amount, double rate){
 529
 530   void **workstation_list = NULL;
 531   int i;
 532
 533   /* alloc structures and initialize */
 534   smx_action_t action = xbt_mallocator_get(simix_global->action_mallocator);
 535   action->type = SIMIX_ACTION_PARALLEL_EXECUTE;
 536   action->name = xbt_strdup(name);
 537   action->state = SIMIX_RUNNING;
 538   action->execution.host = NULL; /* FIXME: do we need the list of hosts? */
 539
 540 #ifdef HAVE_TRACING
 541   action->category = NULL;
 542 #endif
 543
 544   /* set surf's action */
 545   workstation_list = xbt_new0(void *, host_nb);
 546   for (i = 0; i < host_nb; i++)
 547     workstation_list[i] = host_list[i];
 548
 549
 550   /* FIXME: what happens if host_list contains VMs and PMs. If
 551    * execute_parallel_task() does not change the state of the model, we can mix
 552    * them. */
 553   surf_model_t ws_model = surf_resource_model(host_list[0], SURF_WKS_LEVEL);
 554   for (i = 1; i < host_nb; i++) {
 555     surf_model_t ws_model_tmp = surf_resource_model(host_list[i], SURF_WKS_LEVEL);
 556     if (ws_model_tmp != ws_model) {
 557       XBT_CRITICAL("mixing VMs and PMs is not supported");
 558       DIE_IMPOSSIBLE;
 559     }
 560   }
 561
 562   /* set surf's action */
 563   if (!MC_is_active()) {
 564     action->execution.surf_exec =
 565       ws_model->extension.workstation.
 566       execute_parallel_task(host_nb, workstation_list, computation_amount,
 567                       communication_amount, rate);
 568
 569     ws_model->action_data_set(action->execution.surf_exec, action);
 570   }
 571   XBT_DEBUG("Create parallel execute action %p", action);
 572
 573   return action;
 574 }
 575
 576 static surf_model_t get_ws_model_from_action(smx_action_t action)
 577 {
 578   xbt_assert(action->type == SIMIX_ACTION_EXECUTE);
 579   smx_host_t host = action->execution.host;
 580   surf_model_t model = surf_resource_model(host, SURF_WKS_LEVEL);
 581
 582   xbt_assert((model == surf_workstation_model) || (model == surf_vm_workstation_model));
 583
 584   return model;
 585 }
 586
 587 void SIMIX_pre_host_execution_destroy(smx_simcall_t simcall, smx_action_t action){
 588   SIMIX_host_execution_destroy(action);
 589 }
 590 void SIMIX_host_execution_destroy(smx_action_t action){
 591   XBT_DEBUG("Destroy action %p", action);
 592
 593   surf_model_t ws_model = get_ws_model_from_action(action);
 594
 595   if (action->execution.surf_exec) {
 596     ws_model->action_unref(action->execution.surf_exec);
 597     action->execution.surf_exec = NULL;
 598   }
 599   xbt_free(action->name);
 600   xbt_mallocator_release(simix_global->action_mallocator, action);
 601 }
 602
 603 void SIMIX_pre_host_execution_cancel(smx_simcall_t simcall, smx_action_t action){
 604   SIMIX_host_execution_cancel(action);
 605 }
 606 void SIMIX_host_execution_cancel(smx_action_t action){
 607   XBT_DEBUG("Cancel action %p", action);
 608
 609   surf_model_t ws_model = get_ws_model_from_action(action);
 610
 611   if (action->execution.surf_exec)
 612     ws_model->action_cancel(action->execution.surf_exec);
 613 }
 614
 615 double SIMIX_pre_host_execution_get_remains(smx_simcall_t simcall, smx_action_t action){
 616   return SIMIX_host_execution_get_remains(action);
 617 }
 618 double SIMIX_host_execution_get_remains(smx_action_t action){
 619   double result = 0.0;
 620   surf_model_t ws_model = get_ws_model_from_action(action);
 621
 622   if (action->state == SIMIX_RUNNING)
 623     result = ws_model->get_remains(action->execution.surf_exec);
 624
 625   return result;
 626 }
 627
 628 e_smx_state_t SIMIX_pre_host_execution_get_state(smx_simcall_t simcall, smx_action_t action){
 629   return SIMIX_host_execution_get_state(action);
 630 }
 631 e_smx_state_t SIMIX_host_execution_get_state(smx_action_t action){
 632   return action->state;
 633 }
 634
 635 void SIMIX_pre_host_execution_set_priority(smx_simcall_t simcall, smx_action_t action,
 636                                         double priority){
 637   SIMIX_host_execution_set_priority(action, priority);
 638 }
 639 void SIMIX_host_execution_set_priority(smx_action_t action, double priority){
 640   surf_model_t ws_model = get_ws_model_from_action(action);
 641
 642   if(action->execution.surf_exec)
 643     ws_model->set_priority(action->execution.surf_exec, priority);
 644 }
 645
 646 void SIMIX_pre_host_execution_set_bound(smx_simcall_t simcall, smx_action_t action,
 647                                         double bound){
 648   SIMIX_host_execution_set_bound(action, bound);
 649 }
 650 void SIMIX_host_execution_set_bound(smx_action_t action, double bound){
 651   surf_model_t ws_model = get_ws_model_from_action(action);
 652
 653   if(action->execution.surf_exec)
 654     ws_model->set_bound(action->execution.surf_exec, bound);
 655 }
 656
 657 void SIMIX_pre_host_execution_set_affinity(smx_simcall_t simcall,
 658     smx_action_t action, smx_host_t host, unsigned long mask){
 659   SIMIX_host_execution_set_affinity(action, host, mask);
 660 }
 661 void SIMIX_host_execution_set_affinity(smx_action_t action, smx_host_t host, unsigned long mask){
 662   surf_model_t ws_model = get_ws_model_from_action(action);
 663
 664   xbt_assert(action->type == SIMIX_ACTION_EXECUTE);
 665
 666   if (action->execution.surf_exec) {
 667     /* just a double check to confirm that this host is the host where this task is running. */
 668     xbt_assert(action->execution.host == host);
 669     ws_model->set_affinity(action->execution.surf_exec, host, mask);
 670   }
 671 }
 672
 673 void SIMIX_pre_host_execution_wait(smx_simcall_t simcall, smx_action_t action){
 674
 675   XBT_DEBUG("Wait for execution of action %p, state %d", action, (int)action->state);
 676
 677   /* Associate this simcall to the action */
 678   xbt_fifo_push(action->simcalls, simcall);
 679   simcall->issuer->waiting_action = action;
 680
 681   /* set surf's action */
 682   if (MC_is_active()) {
 683     action->state = SIMIX_DONE;
 684     SIMIX_execution_finish(action);
 685     return;
 686   }
 687
 688   /* If the action is already finished then perform the error handling */
 689   if (action->state != SIMIX_RUNNING)
 690     SIMIX_execution_finish(action);
 691 }
 692
 693 void SIMIX_host_execution_suspend(smx_action_t action)
 694 {
 695   surf_model_t ws_model = get_ws_model_from_action(action);
 696
 697   if(action->execution.surf_exec)
 698     ws_model->suspend(action->execution.surf_exec);
 699 }
 700
 701 void SIMIX_host_execution_resume(smx_action_t action)
 702 {
 703   surf_model_t ws_model = get_ws_model_from_action(action);
 704
 705   if(action->execution.surf_exec)
 706     ws_model->resume(action->execution.surf_exec);
 707 }
 708
 709 void SIMIX_execution_finish(smx_action_t action)
 710 {
 711   xbt_fifo_item_t item;
 712   smx_simcall_t simcall;
 713   surf_model_t ws_model = get_ws_model_from_action(action);
 714
 715   xbt_fifo_foreach(action->simcalls, item, simcall, smx_simcall_t) {
 716
 717     switch (action->state) {
 718
 719       case SIMIX_DONE:
 720         /* do nothing, action done */
 721   XBT_DEBUG("SIMIX_execution_finished: execution successful");
 722         break;
 723
 724       case SIMIX_FAILED:
 725         XBT_DEBUG("SIMIX_execution_finished: host '%s' failed", sg_host_name(simcall->issuer->smx_host));
 726         simcall->issuer->context->iwannadie = 1;
 727         SMX_EXCEPTION(simcall->issuer, host_error, 0, "Host failed");
 728         break;
 729
 730       case SIMIX_CANCELED:
 731         XBT_DEBUG("SIMIX_execution_finished: execution canceled");
 732         SMX_EXCEPTION(simcall->issuer, cancel_error, 0, "Canceled");
 733         break;
 734
 735       default:
 736         xbt_die("Internal error in SIMIX_execution_finish: unexpected action state %d",
 737             (int)action->state);
 738     }
 739     /* check if the host is down */
 740     if (ws_model->extension.workstation.get_state(simcall->issuer->smx_host) != SURF_RESOURCE_ON) {
 741       simcall->issuer->context->iwannadie = 1;
 742     }
 743
 744     simcall->issuer->waiting_action =    NULL;
 745     simcall_host_execution_wait__set__result(simcall, action->state);
 746     SIMIX_simcall_answer(simcall);
 747   }
 748
 749   /* We no longer need it */
 750   SIMIX_host_execution_destroy(action);
 751 }
 752
 753
 754 void SIMIX_post_host_execute(smx_action_t action)
 755 {
 756   surf_model_t ws_model = get_ws_model_from_action(action);
 757
 758   if (action->type == SIMIX_ACTION_EXECUTE && /* FIMXE: handle resource failure
 759                                                * for parallel tasks too */
 760       ws_model->extension.workstation.get_state(action->execution.host) == SURF_RESOURCE_OFF) {
 761     /* If the host running the action failed, notice it so that the asking
 762      * process can be killed if it runs on that host itself */
 763     action->state = SIMIX_FAILED;
 764   } else if (ws_model->action_state_get(action->execution.surf_exec) == SURF_ACTION_FAILED) {
 765     /* If the host running the action didn't fail, then the action was
 766      * canceled */
 767     action->state = SIMIX_CANCELED;
 768   } else {
 769     action->state = SIMIX_DONE;
 770   }
 771
 772   if (action->execution.surf_exec) {
 773     ws_model->action_unref(action->execution.surf_exec);
 774     action->execution.surf_exec = NULL;
 775   }
 776
 777   /* If there are simcalls associated with the action, then answer them */
 778   if (xbt_fifo_size(action->simcalls)) {
 779     SIMIX_execution_finish(action);
 780   }
 781 }
 782
 783
 784 #ifdef HAVE_TRACING
 785 void SIMIX_pre_set_category(smx_simcall_t simcall, smx_action_t action,
 786                             const char *category){
 787   SIMIX_set_category(action, category);
 788 }
 789 void SIMIX_set_category(smx_action_t action, const char *category)
 790 {
 791   surf_model_t ws_model = get_ws_model_from_action(action);
 792
 793   if (action->state != SIMIX_RUNNING) return;
 794   if (action->type == SIMIX_ACTION_EXECUTE){
 795     ws_model->set_category(action->execution.surf_exec, category);
 796   }else if (action->type == SIMIX_ACTION_COMMUNICATE){
 797     ws_model->set_category(action->comm.surf_comm, category);
 798   }
 799 }
 800 #endif
 801
 802 /**
 803  * \brief Function to get the parameters of the given the SIMIX host.
 804  *
 805  * \param host the host to get_phys_host (a smx_host_t)
 806  * \param param the parameter object space to be overwritten (a ws_params_t)
 807  */
 808 void SIMIX_host_get_params(smx_host_t ind_vm, ws_params_t params)
 809 {
 810   /* jump to ws_get_params(). */
 811   surf_workstation_model->extension.workstation.get_params(ind_vm, params);
 812 }
 813
 814 void SIMIX_pre_host_get_params(smx_simcall_t simcall, smx_host_t ind_vm, ws_params_t params)
 815 {
 816   SIMIX_host_get_params(ind_vm, params);
 817 }
 818
 819 void SIMIX_host_set_params(smx_host_t ind_vm, ws_params_t params)
 820 {
 821   /* jump to ws_set_params(). */
 822   surf_workstation_model->extension.workstation.set_params(ind_vm, params);
 823 }
 824
 825 void SIMIX_pre_host_set_params(smx_simcall_t simcall, smx_host_t ind_vm, ws_params_t params)
 826 {
 827   SIMIX_host_set_params(ind_vm, params);
 828 }
 829
 830 xbt_dict_t SIMIX_pre_host_get_storage_list(smx_simcall_t simcall, smx_host_t host){
 831   return SIMIX_host_get_storage_list(host);
 832 }
 833
 834 xbt_dict_t SIMIX_host_get_storage_list(smx_host_t host){
 835   xbt_assert((host != NULL), "Invalid parameters (simix host is NULL)");
 836
 837   return surf_workstation_model->extension.workstation.get_storage_list(host);
 838 }