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
  13 XBT_LOG_NEW_DEFAULT_SUBCATEGORY(simix_host, simix,
  14                                 "SIMIX hosts");
  15
  16 static void SIMIX_execution_finish(smx_synchro_t synchro);
  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->process_list =
  32       xbt_swag_new(xbt_swag_offset(proc, host_proc_hookup));
  33
  34   /* Update global variables */
  35   xbt_lib_set(host_lib,name,SIMIX_HOST_LEVEL,smx_host);
  36
  37   return xbt_lib_get_elm_or_null(host_lib, name);
  38 }
  39
  40 void simcall_HANDLER_host_on(smx_simcall_t simcall, smx_host_t h)
  41 {
  42   SIMIX_host_on(h);
  43 }
  44
  45 /**
  46  * \brief Start the host if it is off
  47  *
  48  */
  49 void SIMIX_host_on(smx_host_t h)
  50 {
  51   smx_host_priv_t host = SIMIX_host_priv(h);
  52
  53   xbt_assert((host != NULL), "Invalid parameters");
  54
  55   if (surf_resource_get_state(surf_workstation_resource_priv(h))==SURF_RESOURCE_OFF) {
  56     surf_resource_set_state(surf_workstation_resource_priv(h), SURF_RESOURCE_ON);
  57
  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       char** argv = xbt_new(char*, arg->argc);
  64       for (int i=0; i<arg->argc; i++)
  65         argv[i] = xbt_strdup(arg->argv[i]);
  66
  67       XBT_DEBUG("Booting Process %s(%s) right now", arg->argv[0], arg->hostname);
  68       if (simix_global->create_process_function) {
  69         simix_global->create_process_function(&process,
  70                                               argv[0],
  71                                               arg->code,
  72                                               NULL,
  73                                               arg->hostname,
  74                                               arg->kill_time,
  75                                               arg->argc,
  76                                               argv,
  77                                               arg->properties,
  78                                               arg->auto_restart,
  79                                               NULL);
  80       } else {
  81         simcall_process_create(&process,
  82                                arg->argv[0],
  83                                arg->code,
  84                                NULL,
  85                                arg->hostname,
  86                                arg->kill_time,
  87                                arg->argc,
  88                                argv,
  89                                arg->properties,
  90                                arg->auto_restart);
  91       }
  92     }
  93   }
  94 }
  95
  96 void simcall_HANDLER_host_off(smx_simcall_t simcall, smx_host_t h)
  97 {
  98   SIMIX_host_off(h, simcall->issuer);
  99 }
 100
 101 /**
 102  * \brief Stop the host if it is on
 103  *
 104  */
 105 void SIMIX_host_off(smx_host_t h, smx_process_t issuer)
 106 {
 107   smx_host_priv_t host = SIMIX_host_priv(h);
 108
 109   xbt_assert((host != NULL), "Invalid parameters");
 110
 111   if (surf_resource_get_state(surf_workstation_resource_priv(h))==SURF_RESOURCE_ON) {
 112         surf_resource_set_state(surf_workstation_resource_priv(h), SURF_RESOURCE_OFF);
 113
 114     /* Clean Simulator data */
 115     if (xbt_swag_size(host->process_list) != 0) {
 116       smx_process_t process = NULL;
 117       xbt_swag_foreach(process, host->process_list) {
 118         SIMIX_process_kill(process, issuer);
 119         XBT_DEBUG("Killing %s on %s by %s", process->name,  sg_host_name(process->smx_host), issuer->name);
 120       }
 121     }
 122   }
 123   /*xbt_dynar_t vms = surf_workstation_get_vms(h);
 124   unsigned int cpt;
 125   smx_host_t vm;
 126   xbt_dynar_foreach(vms, cpt, vm) {
 127     SIMIX_vm_shutdown(vm, issuer);
 128     SIMIX_vm_destroy(vm);
 129   }
 130   xbt_dynar_free(&vms);*/
 131 }
 132
 133 /**
 134  * \brief Internal function to destroy a SIMIX host.
 135  *
 136  * \param h the host to destroy (a smx_host_t)
 137  */
 138 void SIMIX_host_destroy(void *h)
 139 {
 140   smx_host_priv_t host = (smx_host_priv_t) h;
 141
 142   xbt_assert((host != NULL), "Invalid parameters");
 143
 144   /* Clean Simulator data */
 145   if (xbt_swag_size(host->process_list) != 0) {
 146     char *msg = xbt_strdup("Shutting down host, but it's not empty:");
 147     char *tmp;
 148     smx_process_t process = NULL;
 149
 150     xbt_swag_foreach(process, host->process_list) {
 151       tmp = bprintf("%s\n\t%s", msg, process->name);
 152       free(msg);
 153       msg = tmp;
 154     }
 155     SIMIX_display_process_status();
 156     THROWF(arg_error, 0, "%s", msg);
 157   }
 158   xbt_dynar_free(&host->auto_restart_processes);
 159   xbt_dynar_free(&host->boot_processes);
 160   xbt_swag_free(host->process_list);
 161
 162   /* Clean host structure */
 163   free(host);
 164   return;
 165 }
 166
 167 smx_host_t simcall_HANDLER_host_get_by_name(smx_simcall_t simcall, const char *name){
 168    return SIMIX_host_get_by_name(name);
 169 }
 170 smx_host_t SIMIX_host_get_by_name(const char *name){
 171   xbt_assert(((simix_global != NULL)
 172                && (host_lib != NULL)),
 173               "Environment not set yet");
 174
 175   return xbt_lib_get_elm_or_null(host_lib, name);
 176 }
 177
 178 smx_host_t SIMIX_host_self(void)
 179 {
 180   smx_process_t process = SIMIX_process_self();
 181   return (process == NULL) ? NULL : SIMIX_process_get_host(process);
 182 }
 183
 184 /* needs to be public and without simcall because it is called
 185    by exceptions and logging events */
 186 const char* SIMIX_host_self_get_name(void)
 187 {
 188   smx_host_t host = SIMIX_host_self();
 189   if (host == NULL || SIMIX_process_self() == simix_global->maestro_process)
 190     return "";
 191
 192   return SIMIX_host_get_name(host);
 193 }
 194
 195 const char* simcall_HANDLER_host_get_name(smx_simcall_t simcall, smx_host_t host){
 196    return SIMIX_host_get_name(host);
 197 }
 198 const char* SIMIX_host_get_name(smx_host_t host){
 199   xbt_assert((host != NULL), "Invalid parameters");
 200
 201   return sg_host_name(host);
 202 }
 203
 204 xbt_dict_t simcall_HANDLER_host_get_properties(smx_simcall_t simcall, smx_host_t host){
 205   return SIMIX_host_get_properties(host);
 206 }
 207 xbt_dict_t SIMIX_host_get_properties(smx_host_t host){
 208   xbt_assert((host != NULL), "Invalid parameters (simix host is NULL)");
 209
 210   return surf_resource_get_properties(surf_workstation_resource_priv(host));
 211 }
 212
 213 double simcall_HANDLER_host_get_speed(smx_simcall_t simcall, smx_host_t host){
 214   return SIMIX_host_get_speed(host);
 215 }
 216 double SIMIX_host_get_speed(smx_host_t host){
 217   xbt_assert((host != NULL), "Invalid parameters (simix host is NULL)");
 218   return surf_workstation_get_speed(host, 1.0);
 219 }
 220
 221 int simcall_HANDLER_host_get_core(smx_simcall_t simcall, smx_host_t host){
 222   return SIMIX_host_get_core(host);
 223 }
 224 int SIMIX_host_get_core(smx_host_t host){
 225   xbt_assert((host != NULL), "Invalid parameters (simix host is NULL)");
 226
 227   return surf_workstation_get_core(host);
 228 }
 229
 230 xbt_swag_t simcall_HANDLER_host_get_process_list(smx_simcall_t simcall, smx_host_t host){
 231   return SIMIX_host_get_process_list(host);
 232 }
 233
 234 xbt_swag_t SIMIX_host_get_process_list(smx_host_t host){
 235   xbt_assert((host != NULL), "Invalid parameters (simix host is NULL)");
 236   smx_host_priv_t host_priv = SIMIX_host_priv(host);
 237
 238   return host_priv->process_list;
 239 }
 240
 241
 242 double simcall_HANDLER_host_get_available_speed(smx_simcall_t simcall, smx_host_t host){
 243   return SIMIX_host_get_available_speed(host);
 244 }
 245 double SIMIX_host_get_available_speed(smx_host_t host){
 246   xbt_assert((host != NULL), "Invalid parameters (simix host is NULL)");
 247
 248   return surf_workstation_get_available_speed(host);
 249 }
 250
 251 double simcall_HANDLER_host_get_current_power_peak(smx_simcall_t simcall, smx_host_t host){
 252   return SIMIX_host_get_current_power_peak(host);
 253 }
 254 double SIMIX_host_get_current_power_peak(smx_host_t host) {
 255           xbt_assert((host != NULL), "Invalid parameters (simix host is NULL)");
 256           return surf_workstation_get_current_power_peak(host);
 257 }
 258
 259 double simcall_HANDLER_host_get_power_peak_at(smx_simcall_t simcall, smx_host_t host, int pstate_index){
 260   return SIMIX_host_get_power_peak_at(host, pstate_index);
 261 }
 262 double SIMIX_host_get_power_peak_at(smx_host_t host, int pstate_index) {
 263           xbt_assert((host != NULL), "Invalid parameters (simix host is NULL)");
 264
 265           return surf_workstation_get_power_peak_at(host, pstate_index);
 266 }
 267
 268 int simcall_HANDLER_host_get_nb_pstates(smx_simcall_t simcall, smx_host_t host){
 269   return SIMIX_host_get_nb_pstates(host);
 270 }
 271 int SIMIX_host_get_nb_pstates(smx_host_t host) {
 272           xbt_assert((host != NULL), "Invalid parameters (simix host is NULL)");
 273
 274           return surf_workstation_get_nb_pstates(host);
 275 }
 276
 277
 278 void simcall_HANDLER_host_set_power_peak_at(smx_simcall_t simcall, smx_host_t host, int pstate_index){
 279   SIMIX_host_set_power_peak_at(host, pstate_index);
 280 }
 281 void SIMIX_host_set_power_peak_at(smx_host_t host, int pstate_index) {
 282           xbt_assert((host != NULL), "Invalid parameters (simix host is NULL)");
 283
 284           surf_workstation_set_power_peak_at(host, pstate_index);
 285 }
 286
 287 double simcall_HANDLER_host_get_consumed_energy(smx_simcall_t simcall, smx_host_t host){
 288   return SIMIX_host_get_consumed_energy(host);
 289 }
 290 double SIMIX_host_get_consumed_energy(smx_host_t host) {
 291           xbt_assert((host != NULL), "Invalid parameters (simix host is NULL)");
 292           return surf_workstation_get_consumed_energy(host);
 293 }
 294
 295 int simcall_HANDLER_host_get_state(smx_simcall_t simcall, smx_host_t host){
 296   return SIMIX_host_get_state(host);
 297 }
 298 int SIMIX_host_get_state(smx_host_t host){
 299   xbt_assert((host != NULL), "Invalid parameters (simix host is NULL)");
 300
 301   return surf_resource_get_state(surf_workstation_resource_priv(host));
 302 }
 303
 304 void _SIMIX_host_free_process_arg(void *data)
 305 {
 306   smx_process_arg_t arg = *(void**)data;
 307   int i;
 308   for (i = 0; i < arg->argc; i++)
 309     xbt_free(arg->argv[i]);
 310   xbt_free(arg->argv);
 311   xbt_free(arg->name);
 312   xbt_free(arg);
 313 }
 314 /**
 315  * \brief Add a process to the list of the processes that the host will restart when it comes back
 316  * This function add a process to the list of the processes that will be restarted when the host comes
 317  * back. It is expected that this function is called when the host is down.
 318  * The processes will only be restarted once, meaning that you will have to register the process
 319  * again to restart the process again.
 320  */
 321 void SIMIX_host_add_auto_restart_process(smx_host_t host,
 322                                          const char *name,
 323                                          xbt_main_func_t code,
 324                                          void *data,
 325                                          const char *hostname,
 326                                          double kill_time,
 327                                          int argc, char **argv,
 328                                          xbt_dict_t properties,
 329                                          int auto_restart)
 330 {
 331   if (!SIMIX_host_priv(host)->auto_restart_processes) {
 332     SIMIX_host_priv(host)->auto_restart_processes = xbt_dynar_new(sizeof(smx_process_arg_t),_SIMIX_host_free_process_arg);
 333   }
 334   smx_process_arg_t arg = xbt_new(s_smx_process_arg_t,1);
 335   arg->name = xbt_strdup(name);
 336   arg->code = code;
 337   arg->data = data;
 338   arg->hostname = hostname;
 339   arg->kill_time = kill_time;
 340   arg->argc = argc;
 341
 342   arg->argv = xbt_new(char*,argc + 1);
 343
 344   int i;
 345   for (i = 0; i < argc; i++) {
 346     arg->argv[i] = xbt_strdup(argv[i]);
 347   }
 348   arg->argv[argc] = NULL;
 349
 350   arg->properties = properties;
 351   arg->auto_restart = auto_restart;
 352
 353   if( SIMIX_host_get_state(host) == SURF_RESOURCE_OFF
 354       && !xbt_dict_get_or_null(watched_hosts_lib,sg_host_name(host))){
 355     xbt_dict_set(watched_hosts_lib,sg_host_name(host),host,NULL);
 356     XBT_DEBUG("Have pushed host %s to watched_hosts_lib because state == SURF_RESOURCE_OFF",sg_host_name(host));
 357   }
 358   xbt_dynar_push_as(SIMIX_host_priv(host)->auto_restart_processes,smx_process_arg_t,arg);
 359 }
 360 /**
 361  * \brief Restart the list of processes that have been registered to the host
 362  */
 363 void SIMIX_host_restart_processes(smx_host_t host)
 364 {
 365   unsigned int cpt;
 366   smx_process_arg_t arg;
 367   xbt_dynar_t process_list = SIMIX_host_priv(host)->auto_restart_processes;
 368   if (!process_list)
 369     return;
 370
 371   xbt_dynar_foreach (process_list, cpt, arg) {
 372
 373     smx_process_t process;
 374
 375     XBT_DEBUG("Restarting Process %s(%s) right now", arg->argv[0], arg->hostname);
 376     if (simix_global->create_process_function) {
 377       simix_global->create_process_function(&process,
 378                                             arg->argv[0],
 379                                             arg->code,
 380                                             NULL,
 381                                             arg->hostname,
 382                                             arg->kill_time,
 383                                             arg->argc,
 384                                             arg->argv,
 385                                             arg->properties,
 386                                             arg->auto_restart,
 387                                             NULL);
 388     } else {
 389       simcall_process_create(&process,
 390                              arg->argv[0],
 391                              arg->code,
 392                              NULL,
 393                              arg->hostname,
 394                              arg->kill_time,
 395                              arg->argc,
 396                              arg->argv,
 397                              arg->properties,
 398                              arg->auto_restart);
 399
 400     }
 401     /* arg->argv is used by the process created above.  Hide it to
 402      * _SIMIX_host_free_process_arg() which is called by xbt_dynar_reset()
 403      * below. */
 404     arg->argc = 0;
 405     arg->argv = NULL;
 406   }
 407   xbt_dynar_reset(process_list);
 408 }
 409
 410 void SIMIX_host_autorestart(smx_host_t host)
 411 {
 412   if(simix_global->autorestart)
 413     simix_global->autorestart(host);
 414   else
 415     xbt_die("No function for simix_global->autorestart");
 416 }
 417
 418 smx_synchro_t simcall_HANDLER_host_execute(smx_simcall_t simcall,const char *name,
 419     smx_host_t host, double computation_amount, double priority, double bound, unsigned long affinity_mask){
 420   return SIMIX_host_execute(name, host, computation_amount, priority, bound, affinity_mask);
 421 }
 422 smx_synchro_t SIMIX_host_execute(const char *name,
 423     smx_host_t host, double computation_amount, double priority, double bound, unsigned long affinity_mask){
 424
 425   /* alloc structures and initialize */
 426   smx_synchro_t synchro = xbt_mallocator_get(simix_global->synchro_mallocator);
 427   synchro->type = SIMIX_SYNC_EXECUTE;
 428   synchro->name = xbt_strdup(name);
 429   synchro->state = SIMIX_RUNNING;
 430   synchro->execution.host = host;
 431
 432 #ifdef HAVE_TRACING
 433   synchro->category = NULL;
 434 #endif
 435
 436   /* set surf's action */
 437   if (!MC_is_active()) {
 438
 439     synchro->execution.surf_exec = surf_workstation_execute(host, computation_amount);
 440     surf_action_set_data(synchro->execution.surf_exec, synchro);
 441     surf_action_set_priority(synchro->execution.surf_exec, priority);
 442
 443     /* Note (hypervisor): for multicore, the bound value being passed to the
 444      * surf layer should not be zero (i.e., unlimited). It should be the
 445      * capacity of a CPU core. */
 446     if (bound == 0)
 447       surf_cpu_action_set_bound(synchro->execution.surf_exec, SIMIX_host_get_speed(host));
 448     else
 449       surf_cpu_action_set_bound(synchro->execution.surf_exec, bound);
 450
 451     if (affinity_mask != 0) {
 452       /* just a double check to confirm that this host is the host where this task is running. */
 453       xbt_assert(synchro->execution.host == host);
 454       surf_cpu_action_set_affinity(synchro->execution.surf_exec, host, affinity_mask);
 455     }
 456   }
 457
 458   XBT_DEBUG("Create execute synchro %p: %s", synchro, synchro->name);
 459
 460   return synchro;
 461 }
 462
 463 smx_synchro_t simcall_HANDLER_host_parallel_execute(smx_simcall_t simcall, const char *name,
 464     int host_nb, smx_host_t *host_list,
 465     double *computation_amount, double *communication_amount,
 466     double amount, double rate){
 467   return SIMIX_host_parallel_execute(name, host_nb, host_list, computation_amount,
 468                                      communication_amount, amount, rate);
 469 }
 470 smx_synchro_t SIMIX_host_parallel_execute(const char *name,
 471     int host_nb, smx_host_t *host_list,
 472     double *computation_amount, double *communication_amount,
 473     double amount, double rate){
 474
 475   void **workstation_list = NULL;
 476   int i;
 477
 478   /* alloc structures and initialize */
 479   smx_synchro_t synchro = xbt_mallocator_get(simix_global->synchro_mallocator);
 480   synchro->type = SIMIX_SYNC_PARALLEL_EXECUTE;
 481   synchro->name = xbt_strdup(name);
 482   synchro->state = SIMIX_RUNNING;
 483   synchro->execution.host = NULL; /* FIXME: do we need the list of hosts? */
 484
 485 #ifdef HAVE_TRACING
 486   synchro->category = NULL;
 487 #endif
 488
 489   /* set surf's synchro */
 490   workstation_list = xbt_new0(void *, host_nb);
 491   for (i = 0; i < host_nb; i++)
 492     workstation_list[i] = surf_workstation_resource_priv(host_list[i]);
 493
 494
 495   /* FIXME: what happens if host_list contains VMs and PMs. If
 496    * execute_parallel_task() does not change the state of the model, we can mix
 497    * them. */
 498   surf_model_t ws_model = surf_resource_model(host_list[0], SURF_WKS_LEVEL);
 499   for (i = 1; i < host_nb; i++) {
 500     surf_model_t ws_model_tmp = surf_resource_model(host_list[i], SURF_WKS_LEVEL);
 501     if (ws_model_tmp != ws_model) {
 502       XBT_CRITICAL("mixing VMs and PMs is not supported");
 503       DIE_IMPOSSIBLE;
 504     }
 505   }
 506
 507   /* set surf's synchro */
 508   if (!MC_is_active()) {
 509     synchro->execution.surf_exec =
 510       surf_workstation_model_execute_parallel_task((surf_workstation_model_t)surf_workstation_model,
 511                   host_nb, workstation_list, computation_amount, communication_amount, rate);
 512
 513     surf_action_set_data(synchro->execution.surf_exec, synchro);
 514   }
 515   XBT_DEBUG("Create parallel execute synchro %p", synchro);
 516
 517   return synchro;
 518 }
 519
 520 void simcall_HANDLER_host_execution_destroy(smx_simcall_t simcall, smx_synchro_t synchro){
 521   SIMIX_host_execution_destroy(synchro);
 522 }
 523 void SIMIX_host_execution_destroy(smx_synchro_t synchro){
 524   XBT_DEBUG("Destroy synchro %p", synchro);
 525
 526   if (synchro->execution.surf_exec) {
 527     surf_action_unref(synchro->execution.surf_exec);
 528     synchro->execution.surf_exec = NULL;
 529   }
 530   xbt_free(synchro->name);
 531   xbt_mallocator_release(simix_global->synchro_mallocator, synchro);
 532 }
 533
 534 void simcall_HANDLER_host_execution_cancel(smx_simcall_t simcall, smx_synchro_t synchro){
 535   SIMIX_host_execution_cancel(synchro);
 536 }
 537 void SIMIX_host_execution_cancel(smx_synchro_t synchro){
 538   XBT_DEBUG("Cancel synchro %p", synchro);
 539
 540   if (synchro->execution.surf_exec)
 541     surf_action_cancel(synchro->execution.surf_exec);
 542 }
 543
 544 double simcall_HANDLER_host_execution_get_remains(smx_simcall_t simcall, smx_synchro_t synchro){
 545   return SIMIX_host_execution_get_remains(synchro);
 546 }
 547 double SIMIX_host_execution_get_remains(smx_synchro_t synchro){
 548   double result = 0.0;
 549
 550   if (synchro->state == SIMIX_RUNNING)
 551     result = surf_action_get_remains(synchro->execution.surf_exec);
 552
 553   return result;
 554 }
 555
 556 e_smx_state_t simcall_HANDLER_host_execution_get_state(smx_simcall_t simcall, smx_synchro_t synchro){
 557   return SIMIX_host_execution_get_state(synchro);
 558 }
 559 e_smx_state_t SIMIX_host_execution_get_state(smx_synchro_t synchro){
 560   return synchro->state;
 561 }
 562
 563 void simcall_HANDLER_host_execution_set_priority(smx_simcall_t simcall, smx_synchro_t synchro,
 564                                         double priority){
 565   SIMIX_host_execution_set_priority(synchro, priority);
 566 }
 567 void SIMIX_host_execution_set_priority(smx_synchro_t synchro, double priority){
 568
 569   if(synchro->execution.surf_exec)
 570         surf_action_set_priority(synchro->execution.surf_exec, priority);
 571 }
 572
 573 void simcall_HANDLER_host_execution_set_bound(smx_simcall_t simcall, smx_synchro_t synchro,
 574                                         double bound){
 575   SIMIX_host_execution_set_bound(synchro, bound);
 576 }
 577 void SIMIX_host_execution_set_bound(smx_synchro_t synchro, double bound){
 578
 579   if(synchro->execution.surf_exec)
 580         surf_cpu_action_set_bound(synchro->execution.surf_exec, bound);
 581 }
 582
 583 void simcall_HANDLER_host_execution_set_affinity(smx_simcall_t simcall,
 584     smx_synchro_t synchro, smx_host_t host, unsigned long mask){
 585   SIMIX_host_execution_set_affinity(synchro, host, mask);
 586 }
 587 void SIMIX_host_execution_set_affinity(smx_synchro_t synchro, smx_host_t host, unsigned long mask){
 588   xbt_assert(synchro->type == SIMIX_SYNC_EXECUTE);
 589
 590   if (synchro->execution.surf_exec) {
 591     /* just a double check to confirm that this host is the host where this task is running. */
 592     xbt_assert(synchro->execution.host == host);
 593     surf_cpu_action_set_affinity(synchro->execution.surf_exec, host, mask);
 594   }
 595 }
 596
 597 void simcall_HANDLER_host_execution_wait(smx_simcall_t simcall, smx_synchro_t synchro){
 598
 599   XBT_DEBUG("Wait for execution of synchro %p, state %d", synchro, (int)synchro->state);
 600
 601   /* Associate this simcall to the synchro */
 602   xbt_fifo_push(synchro->simcalls, simcall);
 603   simcall->issuer->waiting_synchro = synchro;
 604
 605   /* set surf's synchro */
 606   if (MC_is_active()) {
 607     synchro->state = SIMIX_DONE;
 608     SIMIX_execution_finish(synchro);
 609     return;
 610   }
 611
 612   /* If the synchro is already finished then perform the error handling */
 613   if (synchro->state != SIMIX_RUNNING)
 614     SIMIX_execution_finish(synchro);
 615 }
 616
 617 void SIMIX_host_execution_suspend(smx_synchro_t synchro)
 618 {
 619   if(synchro->execution.surf_exec)
 620     surf_action_suspend(synchro->execution.surf_exec);
 621 }
 622
 623 void SIMIX_host_execution_resume(smx_synchro_t synchro)
 624 {
 625   if(synchro->execution.surf_exec)
 626     surf_action_resume(synchro->execution.surf_exec);
 627 }
 628
 629 void SIMIX_execution_finish(smx_synchro_t synchro)
 630 {
 631   xbt_fifo_item_t item;
 632   smx_simcall_t simcall;
 633
 634   xbt_fifo_foreach(synchro->simcalls, item, simcall, smx_simcall_t) {
 635
 636     switch (synchro->state) {
 637
 638       case SIMIX_DONE:
 639         /* do nothing, synchro done */
 640         XBT_DEBUG("SIMIX_execution_finished: execution successful");
 641         break;
 642
 643       case SIMIX_FAILED:
 644         XBT_DEBUG("SIMIX_execution_finished: host '%s' failed", sg_host_name(simcall->issuer->smx_host));
 645         simcall->issuer->context->iwannadie = 1;
 646         SMX_EXCEPTION(simcall->issuer, host_error, 0, "Host failed");
 647         break;
 648
 649       case SIMIX_CANCELED:
 650         XBT_DEBUG("SIMIX_execution_finished: execution canceled");
 651         SMX_EXCEPTION(simcall->issuer, cancel_error, 0, "Canceled");
 652         break;
 653
 654       default:
 655         xbt_die("Internal error in SIMIX_execution_finish: unexpected synchro state %d",
 656             (int)synchro->state);
 657     }
 658     /* check if the host is down */
 659     if (surf_resource_get_state(surf_workstation_resource_priv(simcall->issuer->smx_host)) != SURF_RESOURCE_ON) {
 660       simcall->issuer->context->iwannadie = 1;
 661     }
 662
 663     simcall->issuer->waiting_synchro =    NULL;
 664     simcall_host_execution_wait__set__result(simcall, synchro->state);
 665     SIMIX_simcall_answer(simcall);
 666   }
 667
 668   /* We no longer need it */
 669   SIMIX_host_execution_destroy(synchro);
 670 }
 671
 672
 673 void SIMIX_post_host_execute(smx_synchro_t synchro)
 674 {
 675   if (synchro->type == SIMIX_SYNC_EXECUTE && /* FIMXE: handle resource failure
 676                                                * for parallel tasks too */
 677       surf_resource_get_state(surf_workstation_resource_priv(synchro->execution.host)) == SURF_RESOURCE_OFF) {
 678     /* If the host running the synchro failed, notice it so that the asking
 679      * process can be killed if it runs on that host itself */
 680     synchro->state = SIMIX_FAILED;
 681   } else if (surf_action_get_state(synchro->execution.surf_exec) == SURF_ACTION_FAILED) {
 682     /* If the host running the synchro didn't fail, then the synchro was
 683      * canceled */
 684     synchro->state = SIMIX_CANCELED;
 685   } else {
 686     synchro->state = SIMIX_DONE;
 687   }
 688
 689   if (synchro->execution.surf_exec) {
 690     surf_action_unref(synchro->execution.surf_exec);
 691     synchro->execution.surf_exec = NULL;
 692   }
 693
 694   /* If there are simcalls associated with the synchro, then answer them */
 695   if (xbt_fifo_size(synchro->simcalls)) {
 696     SIMIX_execution_finish(synchro);
 697   }
 698 }
 699
 700
 701 #ifdef HAVE_TRACING
 702 void simcall_HANDLER_set_category(smx_simcall_t simcall, smx_synchro_t synchro,
 703                             const char *category){
 704   SIMIX_set_category(synchro, category);
 705 }
 706 void SIMIX_set_category(smx_synchro_t synchro, const char *category)
 707 {
 708   if (synchro->state != SIMIX_RUNNING) return;
 709   if (synchro->type == SIMIX_SYNC_EXECUTE){
 710     surf_action_set_category(synchro->execution.surf_exec, category);
 711   }else if (synchro->type == SIMIX_SYNC_COMMUNICATE){
 712     surf_action_set_category(synchro->comm.surf_comm, category);
 713   }
 714 }
 715 #endif
 716
 717 /**
 718  * \brief Function to get the parameters of the given the SIMIX host.
 719  *
 720  * \param host the host to get_phys_host (a smx_host_t)
 721  * \param param the parameter object space to be overwritten (a ws_params_t)
 722  */
 723 void SIMIX_host_get_params(smx_host_t ind_vm, ws_params_t params)
 724 {
 725   /* jump to ws_get_params(). */
 726   surf_workstation_get_params(ind_vm, params);
 727 }
 728
 729 void simcall_HANDLER_host_get_params(smx_simcall_t simcall, smx_host_t ind_vm, ws_params_t params)
 730 {
 731   SIMIX_host_get_params(ind_vm, params);
 732 }
 733
 734 void SIMIX_host_set_params(smx_host_t ind_vm, ws_params_t params)
 735 {
 736   /* jump to ws_set_params(). */
 737   surf_workstation_set_params(ind_vm, params);
 738 }
 739
 740 void simcall_HANDLER_host_set_params(smx_simcall_t simcall, smx_host_t ind_vm, ws_params_t params)
 741 {
 742   SIMIX_host_set_params(ind_vm, params);
 743 }
 744
 745 xbt_dict_t simcall_HANDLER_host_get_mounted_storage_list(smx_simcall_t simcall, smx_host_t host){
 746   return SIMIX_host_get_mounted_storage_list(host);
 747 }
 748
 749 xbt_dict_t SIMIX_host_get_mounted_storage_list(smx_host_t host){
 750   xbt_assert((host != NULL), "Invalid parameters (simix host is NULL)");
 751
 752   return surf_workstation_get_mounted_storage_list(host);
 753 }
 754
 755 xbt_dynar_t simcall_HANDLER_host_get_attached_storage_list(smx_simcall_t simcall, smx_host_t host){
 756   return SIMIX_host_get_attached_storage_list(host);
 757 }
 758
 759 xbt_dynar_t SIMIX_host_get_attached_storage_list(smx_host_t host){
 760   xbt_assert((host != NULL), "Invalid parameters (simix host is NULL)");
 761
 762   return surf_workstation_get_attached_storage_list(host);
 763 }