src/surf/workstation.c

   1 /* Copyright (c) 2004-2013. 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 "xbt/ex.h"
   8 #include "xbt/dict.h"
   9 #include "portable.h"
  10 #include "surf_private.h"
  11 #include "storage_private.h"
  12 #include "surf/surf_resource.h"
  13 #include "simgrid/sg_config.h"
  14 <<<<<<< HEAD
  15 #include <inttypes.h>
  16
  17 typedef struct workstation_CLM03 {
  18   s_surf_resource_t generic_resource;   /* Must remain first to add this to a trace */
  19   void *net_elm;
  20   xbt_dynar_t storage;
  21 } s_workstation_CLM03_t, *workstation_CLM03_t;
  22 ||||||| merged common ancestors
  23
  24 typedef struct workstation_CLM03 {
  25   s_surf_resource_t generic_resource;   /* Must remain first to add this to a trace */
  26   void *net_elm;
  27   xbt_dynar_t storage;
  28 } s_workstation_CLM03_t, *workstation_CLM03_t;
  29 =======
  30 #include "workstation_private.h"
  31 #include "vm_workstation_private.h"
  32 #include "cpu_cas01_private.h"
  33 #include "maxmin_private.h"
  34 >>>>>>> surf++
  35
  36 XBT_LOG_NEW_DEFAULT_SUBCATEGORY(surf_workstation, surf,
  37                                 "Logging specific to the SURF workstation module");
  38
  39 surf_model_t surf_workstation_model = NULL;
  40
  41
  42 static void workstation_new(sg_platf_host_cbarg_t host)
  43 {
  44   const char *name = host->id;
  45
  46   /* NOTE: The properties object is NULL, because the current code uses that of
  47    * that of a cpu resource. */
  48   workstation_CLM03_t ws = (workstation_CLM03_t) surf_resource_new(sizeof(s_workstation_CLM03_t), surf_workstation_model, name, NULL, NULL);
  49
  50   ws->storage = xbt_lib_get_or_null(storage_lib, name, ROUTING_STORAGE_HOST_LEVEL);
  51   ws->net_elm = xbt_lib_get_or_null(host_lib, name, ROUTING_HOST_LEVEL);
  52
  53   XBT_DEBUG("Create ws %s with %ld mounted disks", name, xbt_dynar_length(ws->storage));
  54   xbt_lib_set(host_lib, name, SURF_WKS_LEVEL, ws);
  55 }
  56
  57 static void ws_parallel_action_cancel(surf_action_t action)
  58 {
  59   THROW_UNIMPLEMENTED;          /* This model does not implement parallel tasks */
  60 }
  61
  62 static int ws_parallel_action_free(surf_action_t action)
  63 {
  64   THROW_UNIMPLEMENTED;          /* This model does not implement parallel tasks */
  65   return -1;
  66 }
  67
  68 int ws_action_unref(surf_action_t action)
  69 {
  70   if (action->model_obj->type == SURF_MODEL_TYPE_NETWORK)
  71     return surf_network_model->action_unref(action);
  72   else if (action->model_obj->type == SURF_MODEL_TYPE_CPU)
  73     return action->model_obj->action_unref(action);
  74       // previously was: Adrien/Arnaud 6 feb
  75           // surf_cpu_model->action_unref(action);
  76   else if (action->model_obj->type == SURF_MODEL_TYPE_WORKSTATION)
  77     return ws_parallel_action_free(action);
  78   else
  79     DIE_IMPOSSIBLE;
  80   return 0;
  81 }
  82
  83 void ws_action_cancel(surf_action_t action)
  84 {
  85   if (action->model_obj->type == SURF_MODEL_TYPE_NETWORK)
  86     surf_network_model->action_cancel(action);
  87   else if (action->model_obj->type == SURF_MODEL_TYPE_CPU)
  88     action->model_obj->action_cancel(action);
  89   else if (action->model_obj->type == SURF_MODEL_TYPE_WORKSTATION)
  90     ws_parallel_action_cancel(action);
  91   else
  92     DIE_IMPOSSIBLE;
  93   return;
  94 }
  95
  96 static void ws_action_state_set(surf_action_t action,
  97                                 e_surf_action_state_t state)
  98 {
  99   if (action->model_obj->type == SURF_MODEL_TYPE_NETWORK)
 100     surf_network_model->action_state_set(action, state);
 101   else if (action->model_obj->type == SURF_MODEL_TYPE_CPU)
 102     action->model_obj->action_state_set(action, state);
 103   else if (action->model_obj->type == SURF_MODEL_TYPE_WORKSTATION)
 104     surf_action_state_set(action, state);
 105   else
 106     DIE_IMPOSSIBLE;
 107   return;
 108 }
 109
 110
 111 /* -- The callback functions at model_private -- */
 112 /* These callbacks are also used for the vm workstation model. */
 113 int ws_resource_used(void *resource_id)
 114 {
 115   /* This model does not implement parallel tasks */
 116   THROW_IMPOSSIBLE;
 117   return -1;
 118 }
 119
 120
 121 /* TODO: iterating active constraint_set may be faster? */
 122 #if 0
 123 static void deactivate_dummy_cpu_action(void)
 124 {
 125   lmm_system_t sys = surf_cpu_model_vm->model_private->maxmin_system;
 126
 127   lmm_constraint_t cnst;
 128   xbt_swag_foreach(cnst, &sys->active_constraint_set) {
 129     /* get vcpu resource */
 130     surf_resource_t cpu = lmm_constraint_id(cnst);
 131     xbt_assert(cpu->model == surf_cpu_model_vm);
 132
 133     /* get vm_ws resource */
 134     workstation_CLM03_t ws = xbt_lib_get_or_null(host_lib, cpu->name, SURF_WKS_LEVEL);
 135
 136     /* make sure we can cast */
 137     xbt_assert(ws->generic_resouce.model == surf_vm_workstation_model);
 138     workstation_VM2013_t vm_ws = (workstation_VM2013_t) ws;
 139
 140     /* make it active in the PM layer */
 141     surf_action_set_priority(vm_ws->cpu_action, 1);
 142   }
 143 }
 144 #endif
 145
 146
 147 /* TODO: Delete this unused code if everything looks good. */
 148 #if 0
 149 static int constraint_is_active(cpu_Cas01_t cpu_cas01)
 150 {
 151   surf_model_t cpu_model = cpu_cas01->generic_resource.model;
 152   lmm_system_t sys = cpu_model->model_private->maxmin_system;
 153   int found = 0;
 154   lmm_constraint_t cnst_tmp;
 155
 156   xbt_swag_foreach(cnst_tmp, &sys->active_constraint_set) {
 157     if (cnst_tmp == cpu_cas01->constraint) {
 158       found = 1;
 159       break;
 160     }
 161   }
 162
 163   return found;
 164 }
 165 #endif
 166
 167
 168 /* Each VM has a dummy CPU action on the PM layer. This CPU action works as the
 169  * constraint (capacity) of the VM in the PM layer. If the VM does not have any
 170  * active task, the dummy CPU action must be deactivated, so that the VM does
 171  * not get any CPU share in the PM layer. */
 172 static void adjust_weight_of_dummy_cpu_actions(void)
 173 {
 174   /* iterate for all hosts including virtual machines */
 175   xbt_lib_cursor_t cursor;
 176   char *key;
 177   void **ind_host;
 178
 179   xbt_lib_foreach(host_lib, cursor, key, ind_host) {
 180     workstation_CLM03_t ws_clm03 = ind_host[SURF_WKS_LEVEL];
 181     cpu_Cas01_t cpu_cas01 = ind_host[SURF_CPU_LEVEL];
 182
 183     if (!ws_clm03)
 184       continue;
 185     /* skip if it is not a virtual machine */
 186     if (ws_clm03->generic_resource.model != surf_vm_workstation_model)
 187       continue;
 188     xbt_assert(cpu_cas01, "cpu-less workstation");
 189
 190     /* It is a virtual machine, so we can cast it to workstation_VM2013_t */
 191     workstation_VM2013_t ws_vm2013 = (workstation_VM2013_t) ws_clm03;
 192
 193     lmm_system_t sys = surf_cpu_model_vm->model_private->maxmin_system;
 194     int is_active = lmm_constraint_used(sys, cpu_cas01->constraint);
 195     // int is_active_old = constraint_is_active(cpu_cas01);
 196
 197     // {
 198     //   xbt_assert(is_active == is_active_old, "%d %d", is_active, is_active_old);
 199     // }
 200
 201     if (is_active) {
 202       /* some tasks exist on this VM */
 203       XBT_DEBUG("set the weight of the dummy CPU action on PM to 1");
 204
 205       /* FIXME: we shoud use lmm_update_variable_weight() ? */
 206       /* FIXME: If we assgign 1.05 and 0.05, the system makes apparently wrong values. */
 207       surf_action_set_priority(ws_vm2013->cpu_action, 1);
 208
 209     } else {
 210       /* no task exits on this VM */
 211       XBT_DEBUG("set the weight of the dummy CPU action on PM to 0");
 212
 213       surf_action_set_priority(ws_vm2013->cpu_action, 0);
 214     }
 215   }
 216 }
 217
 218
 219 double ws_share_resources(surf_model_t workstation_model, double now)
 220 {
 221   if (workstation_model->type == SURF_MODEL_TYPE_WORKSTATION)
 222     adjust_weight_of_dummy_cpu_actions();
 223
 224   /* Invoke the share_resources() callback of the physical cpu model object and
 225    * the network model objects. */
 226   surf_model_t cpu_model = workstation_model->extension.workstation.cpu_model;
 227   surf_model_t net_model = surf_network_model;
 228
 229   double min_by_cpu = cpu_model->model_private->share_resources(cpu_model, now);
 230   double min_by_net = net_model->model_private->share_resources(net_model, now);
 231
 232   XBT_DEBUG("model %p, %s min_by_cpu %f, %s min_by_net %f",
 233       workstation_model, cpu_model->name, min_by_cpu, net_model->name, min_by_net);
 234
 235   if (min_by_cpu >= 0.0 && min_by_net >= 0.0)
 236     return min(min_by_cpu, min_by_net);
 237   else if (min_by_cpu >= 0.0)
 238     return min_by_cpu;
 239   else if (min_by_net >= 0.0)
 240     return min_by_net;
 241   else
 242     return min_by_cpu;  /* probably min_by_cpu == min_by_net == -1 */
 243 }
 244
 245 void ws_update_actions_state(surf_model_t workstation_model, double now, double delta)
 246 {
 247   return;
 248 }
 249
 250 void ws_update_resource_state(void *id, tmgr_trace_event_t event_type, double value, double date)
 251 {
 252   /* This model does not implement parallel tasks */
 253   THROW_IMPOSSIBLE;
 254 }
 255
 256 void ws_finalize(surf_model_t workstation_model)
 257 {
 258   surf_model_exit(workstation_model);
 259   workstation_model = NULL;
 260 }
 261
 262
 263
 264 surf_action_t ws_execute(void *workstation, double size)
 265 {
 266   surf_resource_t cpu = ((surf_resource_t) surf_cpu_resource_priv(workstation));
 267   return cpu->model->extension.cpu.execute(workstation, size);
 268 }
 269
 270 surf_action_t ws_action_sleep(void *workstation, double duration)
 271 {
 272   surf_resource_t cpu = ((surf_resource_t) surf_cpu_resource_priv(workstation));
 273   return cpu->model->extension.cpu.sleep(workstation, duration);
 274 }
 275
 276 void ws_action_suspend(surf_action_t action)
 277 {
 278   if (action->model_obj->type == SURF_MODEL_TYPE_NETWORK)
 279     surf_network_model->suspend(action);
 280   else if (action->model_obj->type == SURF_MODEL_TYPE_CPU)
 281     action->model_obj->suspend(action);
 282   else
 283     DIE_IMPOSSIBLE;
 284 }
 285
 286 void ws_action_resume(surf_action_t action)
 287 {
 288   if (action->model_obj->type == SURF_MODEL_TYPE_NETWORK)
 289     surf_network_model->resume(action);
 290   else if (action->model_obj->type == SURF_MODEL_TYPE_CPU)
 291     action->model_obj->resume(action);
 292   else
 293     DIE_IMPOSSIBLE;
 294 }
 295
 296 static int ws_action_is_suspended(surf_action_t action)
 297 {
 298   if (action->model_obj->type == SURF_MODEL_TYPE_NETWORK)
 299     return surf_network_model->is_suspended(action);
 300   if (action->model_obj->type == SURF_MODEL_TYPE_CPU)
 301     return action->model_obj->is_suspended(action);
 302   DIE_IMPOSSIBLE;
 303   return -1;
 304 }
 305
 306 static void ws_action_set_max_duration(surf_action_t action,
 307                                        double duration)
 308 {
 309   if (action->model_obj->type == SURF_MODEL_TYPE_NETWORK)
 310     surf_network_model->set_max_duration(action, duration);
 311   else if (action->model_obj->type == SURF_MODEL_TYPE_CPU)
 312     action->model_obj->set_max_duration(action, duration);
 313   else
 314     DIE_IMPOSSIBLE;
 315 }
 316
 317 void ws_action_set_priority(surf_action_t action, double priority)
 318 {
 319   if (action->model_obj->type == SURF_MODEL_TYPE_NETWORK)
 320     surf_network_model->set_priority(action, priority);
 321   else if (action->model_obj->type == SURF_MODEL_TYPE_CPU)
 322     action->model_obj->set_priority(action, priority);
 323   else
 324     DIE_IMPOSSIBLE;
 325 }
 326
 327 void ws_action_set_bound(surf_action_t action, double bound)
 328 {
 329   /* FIXME: only for CPU model object? */
 330   if (action->model_obj->type == SURF_MODEL_TYPE_NETWORK)
 331     surf_network_model->set_bound(action, bound);
 332   else if (action->model_obj->type == SURF_MODEL_TYPE_CPU)
 333     action->model_obj->set_bound(action, bound);
 334   else
 335     DIE_IMPOSSIBLE;
 336 }
 337
 338 void ws_action_set_affinity(surf_action_t action, void *workstation, unsigned long mask)
 339 {
 340   if (action->model_obj->type == SURF_MODEL_TYPE_NETWORK)
 341     DIE_IMPOSSIBLE;
 342   else if (action->model_obj->type == SURF_MODEL_TYPE_CPU)
 343     action->model_obj->set_affinity(action, workstation, mask);
 344   else
 345     DIE_IMPOSSIBLE;
 346 }
 347
 348 #ifdef HAVE_TRACING
 349 static void ws_action_set_category(surf_action_t action, const char *category)
 350 {
 351   if (action->model_obj->type == SURF_MODEL_TYPE_NETWORK)
 352     surf_network_model->set_category(action, category);
 353   else if (action->model_obj->type == SURF_MODEL_TYPE_CPU)
 354     action->model_obj->set_category(action, category);
 355   else
 356     DIE_IMPOSSIBLE;
 357 }
 358 #endif
 359
 360 #ifdef HAVE_LATENCY_BOUND_TRACKING
 361 static int ws_get_latency_limited(surf_action_t action)
 362 {
 363   if (action->model_obj->type == SURF_MODEL_TYPE_NETWORK)
 364     return surf_network_model->get_latency_limited(action);
 365   else
 366     return 0;
 367 }
 368 #endif
 369
 370 double ws_action_get_remains(surf_action_t action)
 371 {
 372   if (action->model_obj->type == SURF_MODEL_TYPE_NETWORK)
 373     return surf_network_model->get_remains(action);
 374   if (action->model_obj->type == SURF_MODEL_TYPE_CPU)
 375     return action->model_obj->get_remains(action);
 376   DIE_IMPOSSIBLE;
 377   return -1.0;
 378 }
 379
 380 static surf_action_t ws_communicate(void *workstation_src,
 381                                     void *workstation_dst, double size,
 382                                     double rate)
 383 {
 384   workstation_CLM03_t src = surf_workstation_resource_priv(workstation_src);
 385   workstation_CLM03_t dst = surf_workstation_resource_priv(workstation_dst);
 386   return surf_network_model->extension.network.
 387       communicate(src->net_elm,
 388                   dst->net_elm, size, rate);
 389 }
 390
 391 e_surf_resource_state_t ws_get_state(void *workstation)
 392 {
 393   surf_resource_t cpu = ((surf_resource_t) surf_cpu_resource_priv(workstation));
 394   return cpu->model->extension.cpu.get_state(workstation);
 395 }
 396
 397 static void ws_set_state(void *workstation, e_surf_resource_state_t state)
 398 {
 399   surf_resource_t cpu = ((surf_resource_t) surf_cpu_resource_priv(workstation));
 400   cpu->model->extension.cpu.set_state(workstation, state);
 401 }
 402
 403 double ws_get_speed(void *workstation, double load)
 404 {
 405   surf_resource_t cpu = ((surf_resource_t) surf_cpu_resource_priv(workstation));
 406   return cpu->model->extension.cpu.get_speed(workstation, load);
 407 }
 408
 409 static int ws_get_core(void *workstation)
 410 {
 411   surf_resource_t cpu = ((surf_resource_t) surf_cpu_resource_priv(workstation));
 412   return cpu->model->extension.cpu.get_core(workstation);
 413 }
 414 static double ws_get_available_speed(void *workstation)
 415 {
 416   surf_resource_t cpu = ((surf_resource_t) surf_cpu_resource_priv(workstation));
 417   return cpu->model->extension.cpu.get_available_speed(workstation);
 418 }
 419
 420 static double ws_get_current_power_peak(void *workstation)
 421 {
 422   surf_resource_t cpu = ((surf_resource_t) surf_cpu_resource_priv(workstation));
 423   return cpu->model->extension.cpu.
 424       get_current_power_peak(workstation);
 425 }
 426
 427 static double ws_get_power_peak_at(void *workstation, int pstate_index)
 428 {
 429   surf_resource_t cpu = ((surf_resource_t) surf_cpu_resource_priv(workstation));
 430   return cpu->model->extension.cpu.
 431       get_power_peak_at(workstation, pstate_index);
 432 }
 433
 434 static int ws_get_nb_pstates(void *workstation)
 435 {
 436   surf_resource_t cpu = ((surf_resource_t) surf_cpu_resource_priv(workstation));
 437   return cpu->model->extension.cpu.
 438       get_nb_pstates(workstation);
 439 }
 440
 441 static void ws_set_power_peak_at(void *workstation, int pstate_index)
 442 {
 443   surf_resource_t cpu = ((surf_resource_t) surf_cpu_resource_priv(workstation));
 444   cpu->model->extension.cpu.
 445       set_power_peak_at(workstation, pstate_index);
 446 }
 447
 448 static double ws_get_consumed_energy(void *workstation)
 449 {
 450   surf_resource_t cpu = ((surf_resource_t) surf_cpu_resource_priv(workstation));
 451   return cpu->model->extension.cpu.
 452       get_consumed_energy(workstation);
 453 }
 454
 455
 456 static surf_action_t ws_execute_parallel_task(int workstation_nb,
 457                                               void **workstation_list,
 458                                               double *computation_amount,
 459                                               double *communication_amount,
 460                                               double rate)
 461 {
 462 #define cost_or_zero(array,pos) ((array)?(array)[pos]:0.0)
 463   if ((workstation_nb == 1)
 464       && (cost_or_zero(communication_amount, 0) == 0.0))
 465     return ws_execute(workstation_list[0], computation_amount[0]);
 466   else if ((workstation_nb == 1)
 467            && (cost_or_zero(computation_amount, 0) == 0.0))
 468     return ws_communicate(workstation_list[0], workstation_list[0],communication_amount[0], rate);
 469   else if ((workstation_nb == 2)
 470              && (cost_or_zero(computation_amount, 0) == 0.0)
 471              && (cost_or_zero(computation_amount, 1) == 0.0)) {
 472     int i,nb = 0;
 473     double value = 0.0;
 474
 475     for (i = 0; i < workstation_nb * workstation_nb; i++) {
 476       if (cost_or_zero(communication_amount, i) > 0.0) {
 477         nb++;
 478         value = cost_or_zero(communication_amount, i);
 479       }
 480     }
 481     if (nb == 1)
 482       return ws_communicate(workstation_list[0], workstation_list[1],value, rate);
 483   }
 484 #undef cost_or_zero
 485
 486   THROW_UNIMPLEMENTED;          /* This model does not implement parallel tasks */
 487   return NULL;
 488 }
 489
 490
 491 /* returns an array of network_link_CM02_t */
 492 static xbt_dynar_t ws_get_route(void *workstation_src, void *workstation_dst)
 493 {
 494   XBT_DEBUG("ws_get_route");
 495   workstation_CLM03_t src = surf_workstation_resource_priv(workstation_src);
 496   workstation_CLM03_t dst = surf_workstation_resource_priv(workstation_dst);
 497   return surf_network_model->extension.
 498       network.get_route(src->net_elm,
 499                   dst->net_elm);
 500 }
 501
 502 static double ws_get_link_bandwidth(const void *link)
 503 {
 504   return surf_network_model->extension.network.get_link_bandwidth(link);
 505 }
 506
 507 static double ws_get_link_latency(const void *link)
 508 {
 509   return surf_network_model->extension.network.get_link_latency(link);
 510 }
 511
 512 static int ws_link_shared(const void *link)
 513 {
 514   return surf_network_model->extension.network.link_shared(link);
 515 }
 516
 517 static xbt_dict_t ws_get_properties(const void *ws)
 518 {
 519   return surf_resource_properties(surf_cpu_resource_priv(ws));
 520 }
 521
 522 static storage_t find_storage_on_mount_list(void *workstation,const char* mount)
 523 {
 524   storage_t st = NULL;
 525   s_mount_t mnt;
 526   unsigned int cursor;
 527   workstation_CLM03_t ws = (workstation_CLM03_t) surf_workstation_resource_priv(workstation);
 528   xbt_dynar_t storage_list = ws->storage;
 529
 530   XBT_DEBUG("Search for storage name '%s' on '%s'",mount,ws->generic_resource.name);
 531   xbt_dynar_foreach(storage_list,cursor,mnt)
 532   {
 533     XBT_DEBUG("See '%s'",mnt.name);
 534     if(!strcmp(mount,mnt.name)){
 535       st = mnt.storage;
 536       break;
 537     }
 538   }
 539   if(!st) xbt_die("Can't find mount '%s' for '%s'",mount,ws->generic_resource.name);
 540   return st;
 541 }
 542
 543 static xbt_dict_t ws_get_storage_list(void *workstation)
 544 {
 545   s_mount_t mnt;
 546   unsigned int i;
 547   xbt_dict_t storage_list = xbt_dict_new_homogeneous(NULL);
 548   char *storage_name = NULL;
 549
 550   workstation_CLM03_t ws = (workstation_CLM03_t) surf_workstation_resource_priv(workstation);
 551   xbt_dynar_t storages = ws->storage;
 552
 553   xbt_dynar_foreach(storages,i,mnt){
 554     storage_name = ((storage_t)mnt.storage)->generic_resource.name;
 555     xbt_dict_set(storage_list,mnt.name,storage_name,NULL);
 556   }
 557   return storage_list;
 558 }
 559
 560 static surf_action_t ws_action_open(void *workstation, const char* mount,
 561                                     const char* path)
 562 {
 563   storage_t st = find_storage_on_mount_list(workstation, mount);
 564   XBT_DEBUG("OPEN on disk '%s'",st->generic_resource.name);
 565   surf_model_t model = st->generic_resource.model;
 566   return model->extension.storage.open(st, mount, path);
 567 }
 568
 569 static surf_action_t ws_action_close(void *workstation, surf_file_t fd)
 570 {
 571   storage_t st = find_storage_on_mount_list(workstation, fd->mount);
 572   XBT_DEBUG("CLOSE on disk '%s'",st->generic_resource.name);
 573   surf_model_t model = st->generic_resource.model;
 574   return model->extension.storage.close(st, fd);
 575 }
 576
 577 static surf_action_t ws_action_read(void *workstation, surf_file_t fd, sg_storage_size_t size)
 578 {
 579   storage_t st = find_storage_on_mount_list(workstation, fd->mount);
 580   XBT_DEBUG("READ on disk '%s'",st->generic_resource.name);
 581   surf_model_t model = st->generic_resource.model;
 582   return model->extension.storage.read(st, fd, size);
 583 }
 584
 585 static surf_action_t ws_action_write(void *workstation, surf_file_t fd, sg_storage_size_t size)
 586 {
 587   storage_t st = find_storage_on_mount_list(workstation, fd->mount);
 588   XBT_DEBUG("WRITE on disk '%s'",st->generic_resource.name);
 589   surf_model_t model = st->generic_resource.model;
 590   return model->extension.storage.write(st, fd, size);
 591 }
 592
 593 static int ws_file_unlink(void *workstation, surf_file_t fd)
 594 {
 595   if (!fd){
 596     XBT_WARN("No such file descriptor. Impossible to unlink");
 597     return 0;
 598   } else {
 599 //    XBT_INFO("%s %zu", fd->storage, fd->size);
 600     storage_t st = find_storage_on_mount_list(workstation, fd->mount);
 601     xbt_dict_t content_dict = (st)->content;
 602     /* Check if the file is on this storage */
 603     if (!xbt_dict_get_or_null(content_dict, fd->name)){
 604       XBT_WARN("File %s is not on disk %s. Impossible to unlink", fd->name,
 605           st->generic_resource.name);
 606       return 0;
 607     } else {
 608       XBT_DEBUG("UNLINK on disk '%s'",st->generic_resource.name);
 609       st->used_size -= fd->size;
 610
 611       // Remove the file from storage
 612       xbt_dict_remove(content_dict,fd->name);
 613
 614       free(fd->name);
 615       free(fd->mount);
 616       xbt_free(fd);
 617       return 1;
 618     }
 619   }
 620 }
 621
 622 static surf_action_t ws_action_ls(void *workstation, const char* mount,
 623                                   const char *path)
 624 {
 625   XBT_DEBUG("LS on mount '%s' and file '%s'",mount, path);
 626   storage_t st = find_storage_on_mount_list(workstation, mount);
 627   surf_model_t model = st->generic_resource.model;
 628   return model->extension.storage.ls(st, path);
 629 }
 630
 631 static sg_storage_size_t ws_file_get_size(void *workstation, surf_file_t fd)
 632 {
 633   return fd->size;
 634 }
 635
 636 static xbt_dynar_t ws_file_get_info(void *workstation, surf_file_t fd)
 637 {
 638   storage_t st = find_storage_on_mount_list(workstation, fd->mount);
 639   sg_storage_size_t *psize = xbt_new(sg_storage_size_t, 1);
 640   *psize = fd->size;
 641   xbt_dynar_t info = xbt_dynar_new(sizeof(void*), NULL);
 642   xbt_dynar_push_as(info, sg_storage_size_t *, psize);
 643   xbt_dynar_push_as(info, void *, fd->mount);
 644   xbt_dynar_push_as(info, void *, st->generic_resource.name);
 645   xbt_dynar_push_as(info, void *, st->type_id);
 646   xbt_dynar_push_as(info, void *, st->content_type);
 647
 648   return info;
 649 }
 650
 651 static sg_storage_size_t ws_storage_get_free_size(void *workstation,const char* name)
 652 {
 653   storage_t st = find_storage_on_mount_list(workstation, name);
 654   return st->size - st->used_size;
 655 }
 656
 657 static sg_storage_size_t ws_storage_get_used_size(void *workstation,const char* name)
 658 {
 659   storage_t st = find_storage_on_mount_list(workstation, name);
 660   return st->used_size;
 661 }
 662
 663 void ws_get_params(void *ws, ws_params_t params)
 664 {
 665   workstation_CLM03_t ws_clm03 = surf_workstation_resource_priv(ws);
 666   memcpy(params, &ws_clm03->params, sizeof(s_ws_params_t));
 667 }
 668
 669 void ws_set_params(void *ws, ws_params_t params)
 670 {
 671   workstation_CLM03_t ws_clm03 = surf_workstation_resource_priv(ws);
 672   /* may check something here. */
 673   memcpy(&ws_clm03->params, params, sizeof(s_ws_params_t));
 674 }
 675
 676 static xbt_dynar_t ws_get_vms(void *pm)
 677 {
 678   xbt_dynar_t dyn = xbt_dynar_new(sizeof(smx_host_t), NULL);
 679
 680   /* iterate for all hosts including virtual machines */
 681   xbt_lib_cursor_t cursor;
 682   char *key;
 683   void **ind_host;
 684   xbt_lib_foreach(host_lib, cursor, key, ind_host) {
 685     workstation_CLM03_t ws_clm03 = ind_host[SURF_WKS_LEVEL];
 686     if (!ws_clm03)
 687       continue;
 688     /* skip if it is not a virtual machine */
 689     if (ws_clm03->generic_resource.model != surf_vm_workstation_model)
 690       continue;
 691
 692     /* It is a virtual machine, so we can cast it to workstation_VM2013_t */
 693     workstation_VM2013_t ws_vm2013 = (workstation_VM2013_t) ws_clm03;
 694     if (pm == ws_vm2013->sub_ws)
 695       xbt_dynar_push(dyn, &ws_vm2013->sub_ws);
 696   }
 697
 698   return dyn;
 699 }
 700
 701
 702 static void surf_workstation_model_init_internal(void)
 703 {
 704   surf_model_t model = surf_model_init();
 705
 706   model->name = "Workstation";
 707   model->type = SURF_MODEL_TYPE_WORKSTATION;
 708   model->action_unref     = ws_action_unref;
 709   model->action_cancel    = ws_action_cancel;
 710   model->action_state_set = ws_action_state_set;
 711
 712   model->model_private->resource_used         = ws_resource_used;
 713   model->model_private->share_resources       = ws_share_resources;
 714   model->model_private->update_actions_state  = ws_update_actions_state;
 715   model->model_private->update_resource_state = ws_update_resource_state;
 716   model->model_private->finalize              = ws_finalize;
 717
 718   model->suspend          = ws_action_suspend;
 719   model->resume           = ws_action_resume;
 720   model->is_suspended     = ws_action_is_suspended;
 721   model->set_max_duration = ws_action_set_max_duration;
 722   model->set_priority     = ws_action_set_priority;
 723   model->set_bound        = ws_action_set_bound;
 724   model->set_affinity     = ws_action_set_affinity;
 725   #ifdef HAVE_TRACING
 726   model->set_category     = ws_action_set_category;
 727   #endif
 728   model->get_remains      = ws_action_get_remains;
 729   #ifdef HAVE_LATENCY_BOUND_TRACKING
 730   model->get_latency_limited = ws_get_latency_limited;
 731   #endif
 732
 733   /* For VM support, we have a surf cpu model object for each workstation model
 734    * object. The physical workstation model object has the cpu model object of
 735    * the physical machine layer. */
 736   xbt_assert(surf_cpu_model_pm);
 737   model->extension.workstation.cpu_model = surf_cpu_model_pm;
 738
 739   model->extension.workstation.execute   = ws_execute;
 740   model->extension.workstation.sleep     = ws_action_sleep;
 741   model->extension.workstation.get_state = ws_get_state;
 742   model->extension.workstation.set_state = ws_set_state;
 743   model->extension.workstation.get_core  = ws_get_core;
 744   model->extension.workstation.get_speed = ws_get_speed;
 745   model->extension.workstation.get_available_speed =
 746       ws_get_available_speed;
 747   model->extension.workstation.get_current_power_peak = ws_get_current_power_peak;
 748   model->extension.workstation.get_power_peak_at = ws_get_power_peak_at;
 749   model->extension.workstation.get_nb_pstates = ws_get_nb_pstates;
 750   model->extension.workstation.set_power_peak_at = ws_set_power_peak_at;
 751   model->extension.workstation.get_consumed_energy = ws_get_consumed_energy;
 752
 753   model->extension.workstation.communicate = ws_communicate;
 754   model->extension.workstation.get_route = ws_get_route;
 755   model->extension.workstation.execute_parallel_task = ws_execute_parallel_task;
 756   model->extension.workstation.get_link_bandwidth = ws_get_link_bandwidth;
 757   model->extension.workstation.get_link_latency = ws_get_link_latency;
 758   model->extension.workstation.link_shared = ws_link_shared;
 759   model->extension.workstation.get_properties = ws_get_properties;
 760
 761   model->extension.workstation.open = ws_action_open;
 762   model->extension.workstation.close = ws_action_close;
 763   model->extension.workstation.read = ws_action_read;
 764   model->extension.workstation.write = ws_action_write;
 765   model->extension.workstation.unlink = ws_file_unlink;
 766   model->extension.workstation.ls = ws_action_ls;
 767   model->extension.workstation.get_size = ws_file_get_size;
 768   model->extension.workstation.get_info = ws_file_get_info;
 769   model->extension.workstation.get_free_size = ws_storage_get_free_size;
 770   model->extension.workstation.get_used_size = ws_storage_get_used_size;
 771   model->extension.workstation.get_storage_list = ws_get_storage_list;
 772
 773   model->extension.workstation.get_params = ws_get_params;
 774   model->extension.workstation.set_params = ws_set_params;
 775   model->extension.workstation.get_vms    = ws_get_vms;
 776
 777   surf_workstation_model = model;
 778 }
 779
 780 void surf_workstation_model_init_current_default(void)
 781 {
 782   xbt_cfg_setdefault_boolean(_sg_cfg_set, "network/crosstraffic", "yes");
 783   surf_cpu_model_init_Cas01();
 784   surf_network_model_init_LegrandVelho();
 785
 786   /* surf_cpu_mode_pm and surf_network_model must be initialized in advance. */
 787   xbt_assert(surf_cpu_model_pm);
 788   xbt_assert(surf_network_model);
 789   surf_workstation_model_init_internal();
 790
 791   xbt_dynar_push(model_list, &surf_workstation_model);
 792   xbt_dynar_push(model_list_invoke, &surf_workstation_model);
 793   sg_platf_host_add_cb(workstation_new);
 794 }
 795
 796 void surf_workstation_model_init_compound()
 797 {
 798   xbt_assert(surf_cpu_model_pm, "No CPU model defined yet!");
 799   xbt_assert(surf_network_model, "No network model defined yet!");
 800
 801   surf_workstation_model_init_internal();
 802   xbt_dynar_push(model_list, &surf_workstation_model);
 803   xbt_dynar_push(model_list_invoke, &surf_workstation_model);
 804   sg_platf_host_add_cb(workstation_new);
 805 }