src/surf/workstation.c

   1 /* Copyright (c) 2004, 2005, 2006, 2007, 2008, 2009, 2010. 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 #include "workstation_private.h"
  15 #include "vm_workstation_private.h"
  16 #include "cpu_cas01_private.h"
  17 #include "maxmin_private.h"
  18
  19 XBT_LOG_NEW_DEFAULT_SUBCATEGORY(surf_workstation, surf,
  20                                 "Logging specific to the SURF workstation module");
  21
  22 surf_model_t surf_workstation_model = NULL;
  23
  24
  25 static void workstation_new(sg_platf_host_cbarg_t host)
  26 {
  27   const char *name = host->id;
  28
  29   /* NOTE: The properties object is NULL, because the current code uses that of
  30    * that of a cpu resource. */
  31   workstation_CLM03_t ws = (workstation_CLM03_t) surf_resource_new(sizeof(s_workstation_CLM03_t), surf_workstation_model, name, NULL);
  32
  33   ws->storage = xbt_lib_get_or_null(storage_lib, name, ROUTING_STORAGE_HOST_LEVEL);
  34   ws->net_elm = xbt_lib_get_or_null(host_lib, name, ROUTING_HOST_LEVEL);
  35
  36   XBT_DEBUG("Create ws %s with %ld mounted disks", name, xbt_dynar_length(ws->storage));
  37   xbt_lib_set(host_lib, name, SURF_WKS_LEVEL, ws);
  38 }
  39
  40 static void ws_parallel_action_cancel(surf_action_t action)
  41 {
  42   THROW_UNIMPLEMENTED;          /* This model does not implement parallel tasks */
  43 }
  44
  45 static int ws_parallel_action_free(surf_action_t action)
  46 {
  47   THROW_UNIMPLEMENTED;          /* This model does not implement parallel tasks */
  48   return -1;
  49 }
  50
  51 int ws_action_unref(surf_action_t action)
  52 {
  53   if (action->model_obj->type == SURF_MODEL_TYPE_NETWORK)
  54     return surf_network_model->action_unref(action);
  55   else if (action->model_obj->type == SURF_MODEL_TYPE_CPU)
  56     return action->model_obj->action_unref(action);
  57       // previously was: Adrien/Arnaud 6 feb
  58           // surf_cpu_model->action_unref(action);
  59   else if (action->model_obj->type == SURF_MODEL_TYPE_WORKSTATION)
  60     return ws_parallel_action_free(action);
  61   else
  62     DIE_IMPOSSIBLE;
  63   return 0;
  64 }
  65
  66 void ws_action_cancel(surf_action_t action)
  67 {
  68   if (action->model_obj->type == SURF_MODEL_TYPE_NETWORK)
  69     surf_network_model->action_cancel(action);
  70   else if (action->model_obj->type == SURF_MODEL_TYPE_CPU)
  71     action->model_obj->action_cancel(action);
  72   else if (action->model_obj->type == SURF_MODEL_TYPE_WORKSTATION)
  73     ws_parallel_action_cancel(action);
  74   else
  75     DIE_IMPOSSIBLE;
  76   return;
  77 }
  78
  79 static void ws_action_state_set(surf_action_t action,
  80                                 e_surf_action_state_t state)
  81 {
  82   if (action->model_obj->type == SURF_MODEL_TYPE_NETWORK)
  83     surf_network_model->action_state_set(action, state);
  84   else if (action->model_obj->type == SURF_MODEL_TYPE_CPU)
  85     action->model_obj->action_state_set(action, state);
  86   else if (action->model_obj->type == SURF_MODEL_TYPE_WORKSTATION)
  87     surf_action_state_set(action, state);
  88   else
  89     DIE_IMPOSSIBLE;
  90   return;
  91 }
  92
  93
  94 /* -- The callback functions at model_private -- */
  95 /* These callbacks are also used for the vm workstation model. */
  96 int ws_resource_used(void *resource_id)
  97 {
  98   /* This model does not implement parallel tasks */
  99   THROW_IMPOSSIBLE;
 100   return -1;
 101 }
 102
 103
 104 /* TODO: iterating active constraint_set may be faster? */
 105 #if 0
 106 static void deactivate_dummy_cpu_action(void)
 107 {
 108   lmm_system_t sys = surf_cpu_model_vm->model_private->maxmin_system;
 109
 110   lmm_constraint_t cnst;
 111   xbt_swag_foreach(cnst, &sys->active_constraint_set) {
 112     /* get vcpu resource */
 113     surf_resource_t cpu = lmm_constraint_id(cnst);
 114     xbt_assert(cpu->model == surf_cpu_model_vm);
 115
 116     /* get vm_ws resource */
 117     workstation_CLM03_t ws = xbt_lib_get_or_null(host_lib, cpu->name, SURF_WKS_LEVEL);
 118
 119     /* make sure we can cast */
 120     xbt_assert(ws->generic_resouce.model == surf_vm_workstation_model);
 121     workstation_VM2013_t vm_ws = (workstation_VM2013_t) ws;
 122
 123     /* make it active in the PM layer */
 124     surf_action_set_priority(vm_ws->cpu_action, 1);
 125   }
 126 }
 127 #endif
 128
 129
 130 /* TODO: Delete this unused code if everything looks good. */
 131 #if 0
 132 static int constraint_is_active(cpu_Cas01_t cpu_cas01)
 133 {
 134   surf_model_t cpu_model = cpu_cas01->generic_resource.model;
 135   lmm_system_t sys = cpu_model->model_private->maxmin_system;
 136   int found = 0;
 137   lmm_constraint_t cnst_tmp;
 138
 139   xbt_swag_foreach(cnst_tmp, &sys->active_constraint_set) {
 140     if (cnst_tmp == cpu_cas01->constraint) {
 141       found = 1;
 142       break;
 143     }
 144   }
 145
 146   return found;
 147 }
 148 #endif
 149
 150
 151 /* Each VM has a dummy CPU action on the PM layer. This CPU action works as the
 152  * constraint (capacity) of the VM in the PM layer. If the VM does not have any
 153  * active task, the dummy CPU action must be deactivated, so that the VM does
 154  * not get any CPU share in the PM layer. */
 155 static void adjust_weight_of_dummy_cpu_actions(void)
 156 {
 157   /* iterate for all hosts including virtual machines */
 158   xbt_lib_cursor_t cursor;
 159   char *key;
 160   void **ind_host;
 161
 162   xbt_lib_foreach(host_lib, cursor, key, ind_host) {
 163     workstation_CLM03_t ws_clm03 = ind_host[SURF_WKS_LEVEL];
 164     cpu_Cas01_t cpu_cas01 = ind_host[SURF_CPU_LEVEL];
 165
 166     if (!ws_clm03)
 167       continue;
 168     /* skip if it is not a virtual machine */
 169     if (ws_clm03->generic_resource.model != surf_vm_workstation_model)
 170       continue;
 171     xbt_assert(cpu_cas01, "cpu-less workstation");
 172
 173     /* It is a virtual machine, so we can cast it to workstation_VM2013_t */
 174     workstation_VM2013_t ws_vm2013 = (workstation_VM2013_t) ws_clm03;
 175
 176     lmm_system_t sys = surf_cpu_model_vm->model_private->maxmin_system;
 177     int is_active = lmm_constraint_used(sys, cpu_cas01->constraint);
 178     // int is_active_old = constraint_is_active(cpu_cas01);
 179
 180     // {
 181     //   xbt_assert(is_active == is_active_old, "%d %d", is_active, is_active_old);
 182     // }
 183
 184     if (is_active) {
 185       /* some tasks exist on this VM */
 186       XBT_DEBUG("set the weight of the dummy CPU action on PM to 1");
 187
 188       /* FIXME: we shoud use lmm_update_variable_weight() ? */
 189       /* FIXME: If we assgign 1.05 and 0.05, the system makes apparently wrong values. */
 190       surf_action_set_priority(ws_vm2013->cpu_action, 1);
 191
 192     } else {
 193       /* no task exits on this VM */
 194       XBT_DEBUG("set the weight of the dummy CPU action on PM to 0");
 195
 196       surf_action_set_priority(ws_vm2013->cpu_action, 0);
 197     }
 198   }
 199 }
 200
 201
 202 double ws_share_resources(surf_model_t workstation_model, double now)
 203 {
 204   if (workstation_model->type == SURF_MODEL_TYPE_WORKSTATION)
 205     adjust_weight_of_dummy_cpu_actions();
 206
 207   /* Invoke the share_resources() callback of the physical cpu model object and
 208    * the network model objects. */
 209   surf_model_t cpu_model = workstation_model->extension.workstation.cpu_model;
 210   surf_model_t net_model = surf_network_model;
 211
 212   double min_by_cpu = cpu_model->model_private->share_resources(cpu_model, now);
 213   double min_by_net = net_model->model_private->share_resources(net_model, now);
 214
 215   XBT_DEBUG("model %p, %s min_by_cpu %f, %s min_by_net %f",
 216       workstation_model, cpu_model->name, min_by_cpu, net_model->name, min_by_net);
 217
 218   if (min_by_cpu >= 0.0 && min_by_net >= 0.0)
 219     return min(min_by_cpu, min_by_net);
 220   else if (min_by_cpu >= 0.0)
 221     return min_by_cpu;
 222   else if (min_by_net >= 0.0)
 223     return min_by_net;
 224   else
 225     return min_by_cpu;  /* probably min_by_cpu == min_by_net == -1 */
 226 }
 227
 228 void ws_update_actions_state(surf_model_t workstation_model, double now, double delta)
 229 {
 230   return;
 231 }
 232
 233 void ws_update_resource_state(void *id, tmgr_trace_event_t event_type, double value, double date)
 234 {
 235   /* This model does not implement parallel tasks */
 236   THROW_IMPOSSIBLE;
 237 }
 238
 239 void ws_finalize(surf_model_t workstation_model)
 240 {
 241   surf_model_exit(workstation_model);
 242   workstation_model = NULL;
 243 }
 244
 245
 246
 247 surf_action_t ws_execute(void *workstation, double size)
 248 {
 249   surf_resource_t cpu = ((surf_resource_t) surf_cpu_resource_priv(workstation));
 250   return cpu->model->extension.cpu.execute(workstation, size);
 251 }
 252
 253 surf_action_t ws_action_sleep(void *workstation, double duration)
 254 {
 255   surf_resource_t cpu = ((surf_resource_t) surf_cpu_resource_priv(workstation));
 256   return cpu->model->extension.cpu.sleep(workstation, duration);
 257 }
 258
 259 void ws_action_suspend(surf_action_t action)
 260 {
 261   if (action->model_obj->type == SURF_MODEL_TYPE_NETWORK)
 262     surf_network_model->suspend(action);
 263   else if (action->model_obj->type == SURF_MODEL_TYPE_CPU)
 264     action->model_obj->suspend(action);
 265   else
 266     DIE_IMPOSSIBLE;
 267 }
 268
 269 void ws_action_resume(surf_action_t action)
 270 {
 271   if (action->model_obj->type == SURF_MODEL_TYPE_NETWORK)
 272     surf_network_model->resume(action);
 273   else if (action->model_obj->type == SURF_MODEL_TYPE_CPU)
 274     action->model_obj->resume(action);
 275   else
 276     DIE_IMPOSSIBLE;
 277 }
 278
 279 static int ws_action_is_suspended(surf_action_t action)
 280 {
 281   if (action->model_obj->type == SURF_MODEL_TYPE_NETWORK)
 282     return surf_network_model->is_suspended(action);
 283   if (action->model_obj->type == SURF_MODEL_TYPE_CPU)
 284     return action->model_obj->is_suspended(action);
 285   DIE_IMPOSSIBLE;
 286   return -1;
 287 }
 288
 289 static void ws_action_set_max_duration(surf_action_t action,
 290                                        double duration)
 291 {
 292   if (action->model_obj->type == SURF_MODEL_TYPE_NETWORK)
 293     surf_network_model->set_max_duration(action, duration);
 294   else if (action->model_obj->type == SURF_MODEL_TYPE_CPU)
 295     action->model_obj->set_max_duration(action, duration);
 296   else
 297     DIE_IMPOSSIBLE;
 298 }
 299
 300 void ws_action_set_priority(surf_action_t action, double priority)
 301 {
 302   if (action->model_obj->type == SURF_MODEL_TYPE_NETWORK)
 303     surf_network_model->set_priority(action, priority);
 304   else if (action->model_obj->type == SURF_MODEL_TYPE_CPU)
 305     action->model_obj->set_priority(action, priority);
 306   else
 307     DIE_IMPOSSIBLE;
 308 }
 309
 310 void ws_action_set_bound(surf_action_t action, double bound)
 311 {
 312   /* FIXME: only for CPU model object? */
 313   if (action->model_obj->type == SURF_MODEL_TYPE_NETWORK)
 314     surf_network_model->set_bound(action, bound);
 315   else if (action->model_obj->type == SURF_MODEL_TYPE_CPU)
 316     action->model_obj->set_bound(action, bound);
 317   else
 318     DIE_IMPOSSIBLE;
 319 }
 320
 321 #ifdef HAVE_TRACING
 322 static void ws_action_set_category(surf_action_t action, const char *category)
 323 {
 324   if (action->model_obj->type == SURF_MODEL_TYPE_NETWORK)
 325     surf_network_model->set_category(action, category);
 326   else if (action->model_obj->type == SURF_MODEL_TYPE_CPU)
 327     action->model_obj->set_category(action, category);
 328   else
 329     DIE_IMPOSSIBLE;
 330 }
 331 #endif
 332
 333 #ifdef HAVE_LATENCY_BOUND_TRACKING
 334 static int ws_get_latency_limited(surf_action_t action)
 335 {
 336   if (action->model_obj->type == SURF_MODEL_TYPE_NETWORK)
 337     return surf_network_model->get_latency_limited(action);
 338   else
 339     return 0;
 340 }
 341 #endif
 342
 343 double ws_action_get_remains(surf_action_t action)
 344 {
 345   if (action->model_obj->type == SURF_MODEL_TYPE_NETWORK)
 346     return surf_network_model->get_remains(action);
 347   if (action->model_obj->type == SURF_MODEL_TYPE_CPU)
 348     return action->model_obj->get_remains(action);
 349   DIE_IMPOSSIBLE;
 350   return -1.0;
 351 }
 352
 353 static surf_action_t ws_communicate(void *workstation_src,
 354                                     void *workstation_dst, double size,
 355                                     double rate)
 356 {
 357   workstation_CLM03_t src = surf_workstation_resource_priv(workstation_src);
 358   workstation_CLM03_t dst = surf_workstation_resource_priv(workstation_dst);
 359   return surf_network_model->extension.network.
 360       communicate(src->net_elm,
 361                   dst->net_elm, size, rate);
 362 }
 363
 364 e_surf_resource_state_t ws_get_state(void *workstation)
 365 {
 366   surf_resource_t cpu = ((surf_resource_t) surf_cpu_resource_priv(workstation));
 367   return cpu->model->extension.cpu.get_state(workstation);
 368 }
 369
 370 static void ws_set_state(void *workstation, e_surf_resource_state_t state)
 371 {
 372   surf_resource_t cpu = ((surf_resource_t) surf_cpu_resource_priv(workstation));
 373   cpu->model->extension.cpu.set_state(workstation, state);
 374 }
 375
 376 double ws_get_speed(void *workstation, double load)
 377 {
 378   surf_resource_t cpu = ((surf_resource_t) surf_cpu_resource_priv(workstation));
 379   return cpu->model->extension.cpu.get_speed(workstation, load);
 380 }
 381
 382 static int ws_get_core(void *workstation)
 383 {
 384   surf_resource_t cpu = ((surf_resource_t) surf_cpu_resource_priv(workstation));
 385   return cpu->model->extension.cpu.get_core(workstation);
 386 }
 387 static double ws_get_available_speed(void *workstation)
 388 {
 389   surf_resource_t cpu = ((surf_resource_t) surf_cpu_resource_priv(workstation));
 390   return cpu->model->extension.cpu.get_available_speed(workstation);
 391 }
 392
 393 static surf_action_t ws_execute_parallel_task(int workstation_nb,
 394                                               void **workstation_list,
 395                                               double *computation_amount,
 396                                               double *communication_amount,
 397                                               double rate)
 398 {
 399 #define cost_or_zero(array,pos) ((array)?(array)[pos]:0.0)
 400   if ((workstation_nb == 1)
 401       && (cost_or_zero(communication_amount, 0) == 0.0))
 402     return ws_execute(workstation_list[0], computation_amount[0]);
 403   else if ((workstation_nb == 1)
 404            && (cost_or_zero(computation_amount, 0) == 0.0))
 405     return ws_communicate(workstation_list[0], workstation_list[0],communication_amount[0], rate);
 406   else if ((workstation_nb == 2)
 407              && (cost_or_zero(computation_amount, 0) == 0.0)
 408              && (cost_or_zero(computation_amount, 1) == 0.0)) {
 409     int i,nb = 0;
 410     double value = 0.0;
 411
 412     for (i = 0; i < workstation_nb * workstation_nb; i++) {
 413       if (cost_or_zero(communication_amount, i) > 0.0) {
 414         nb++;
 415         value = cost_or_zero(communication_amount, i);
 416       }
 417     }
 418     if (nb == 1)
 419       return ws_communicate(workstation_list[0], workstation_list[1],value, rate);
 420   }
 421 #undef cost_or_zero
 422
 423   THROW_UNIMPLEMENTED;          /* This model does not implement parallel tasks */
 424   return NULL;
 425 }
 426
 427
 428 /* returns an array of network_link_CM02_t */
 429 static xbt_dynar_t ws_get_route(void *workstation_src, void *workstation_dst)
 430 {
 431   XBT_DEBUG("ws_get_route");
 432   workstation_CLM03_t src = surf_workstation_resource_priv(workstation_src);
 433   workstation_CLM03_t dst = surf_workstation_resource_priv(workstation_dst);
 434   return surf_network_model->extension.
 435       network.get_route(src->net_elm,
 436                   dst->net_elm);
 437 }
 438
 439 static double ws_get_link_bandwidth(const void *link)
 440 {
 441   return surf_network_model->extension.network.get_link_bandwidth(link);
 442 }
 443
 444 static double ws_get_link_latency(const void *link)
 445 {
 446   return surf_network_model->extension.network.get_link_latency(link);
 447 }
 448
 449 static int ws_link_shared(const void *link)
 450 {
 451   return surf_network_model->extension.network.link_shared(link);
 452 }
 453
 454 static xbt_dict_t ws_get_properties(const void *ws)
 455 {
 456   return surf_resource_properties(surf_cpu_resource_priv(ws));
 457 }
 458
 459 static storage_t find_storage_on_mount_list(void *workstation,const char* storage)
 460 {
 461   storage_t st = NULL;
 462   s_mount_t mnt;
 463   unsigned int cursor;
 464   workstation_CLM03_t ws = (workstation_CLM03_t) surf_workstation_resource_priv(workstation);
 465   xbt_dynar_t storage_list = ws->storage;
 466
 467   XBT_DEBUG("Search for storage name '%s' on '%s'",storage,ws->generic_resource.name);
 468   xbt_dynar_foreach(storage_list,cursor,mnt)
 469   {
 470     XBT_DEBUG("See '%s'",mnt.name);
 471     if(!strcmp(storage,mnt.name)){
 472       st = mnt.id;
 473       break;
 474     }
 475   }
 476   if(!st) xbt_die("Can't find mount '%s' for '%s'",storage,ws->generic_resource.name);
 477   return st;
 478 }
 479
 480 static surf_action_t ws_action_open(void *workstation, const char* mount,
 481                                     const char* path)
 482 {
 483   storage_t st = find_storage_on_mount_list(workstation, mount);
 484   XBT_DEBUG("OPEN on disk '%s'",st->generic_resource.name);
 485   surf_model_t model = st->generic_resource.model;
 486   return model->extension.storage.open(st, mount, path);
 487 }
 488
 489 static surf_action_t ws_action_close(void *workstation, surf_file_t fd)
 490 {
 491   storage_t st = find_storage_on_mount_list(workstation, fd->storage);
 492   XBT_DEBUG("CLOSE on disk '%s'",st->generic_resource.name);
 493   surf_model_t model = st->generic_resource.model;
 494   return model->extension.storage.close(st, fd);
 495 }
 496
 497 static surf_action_t ws_action_read(void *workstation, void* ptr, size_t size,
 498                                     surf_file_t fd)
 499 {
 500   storage_t st = find_storage_on_mount_list(workstation, fd->storage);
 501   XBT_DEBUG("READ on disk '%s'",st->generic_resource.name);
 502   surf_model_t model = st->generic_resource.model;
 503   return model->extension.storage.read(st, ptr, size, fd);
 504 }
 505
 506 static surf_action_t ws_action_write(void *workstation, const void* ptr,
 507                                      size_t size, surf_file_t fd)
 508 {
 509   storage_t st = find_storage_on_mount_list(workstation, fd->storage);
 510   XBT_DEBUG("WRITE on disk '%s'",st->generic_resource.name);
 511   surf_model_t model = st->generic_resource.model;
 512   return model->extension.storage.write(st,  ptr, size, fd);
 513 }
 514
 515 static int ws_file_unlink(void *workstation, surf_file_t fd)
 516 {
 517   if (!fd){
 518     XBT_WARN("No such file descriptor. Impossible to unlink");
 519     return 0;
 520   } else {
 521 //    XBT_INFO("%s %zu", fd->storage, fd->size);
 522     storage_t st = find_storage_on_mount_list(workstation, fd->storage);
 523     xbt_dict_t content_dict = (st)->content;
 524     /* Check if the file is on this storage */
 525     if (!xbt_dict_get_or_null(content_dict, fd->name)){
 526       XBT_WARN("File %s is not on disk %s. Impossible to unlink", fd->name,
 527           st->generic_resource.name);
 528       return 0;
 529     } else {
 530       XBT_DEBUG("UNLINK on disk '%s'",st->generic_resource.name);
 531       st->used_size -= fd->size;
 532
 533       // Remove the file from storage
 534       xbt_dict_remove(content_dict,fd->name);
 535
 536       free(fd->name);
 537       free(fd->storage);
 538       xbt_free(fd);
 539       return 1;
 540     }
 541   }
 542 }
 543
 544 static surf_action_t ws_action_ls(void *workstation, const char* mount,
 545                                   const char *path)
 546 {
 547   XBT_DEBUG("LS on mount '%s' and file '%s'",mount, path);
 548   storage_t st = find_storage_on_mount_list(workstation, mount);
 549   surf_model_t model = st->generic_resource.model;
 550   return model->extension.storage.ls(st, path);
 551 }
 552
 553 static size_t ws_file_get_size(void *workstation, surf_file_t fd)
 554 {
 555   return fd->size;
 556 }
 557
 558 void ws_get_params(void *ws, ws_params_t params)
 559 {
 560   workstation_CLM03_t ws_clm03 = surf_workstation_resource_priv(ws);
 561   memcpy(params, &ws_clm03->params, sizeof(s_ws_params_t));
 562 }
 563
 564 void ws_set_params(void *ws, ws_params_t params)
 565 {
 566   workstation_CLM03_t ws_clm03 = surf_workstation_resource_priv(ws);
 567   /* may check something here. */
 568   memcpy(&ws_clm03->params, params, sizeof(s_ws_params_t));
 569 }
 570
 571 static xbt_dynar_t ws_get_vms(void *pm)
 572 {
 573   xbt_dynar_t dyn = xbt_dynar_new(sizeof(smx_host_t), NULL);
 574
 575   /* iterate for all hosts including virtual machines */
 576   xbt_lib_cursor_t cursor;
 577   char *key;
 578   void **ind_host;
 579   xbt_lib_foreach(host_lib, cursor, key, ind_host) {
 580     workstation_CLM03_t ws_clm03 = ind_host[SURF_WKS_LEVEL];
 581     if (!ws_clm03)
 582       continue;
 583     /* skip if it is not a virtual machine */
 584     if (ws_clm03->generic_resource.model != surf_vm_workstation_model)
 585       continue;
 586
 587     /* It is a virtual machine, so we can cast it to workstation_VM2013_t */
 588     workstation_VM2013_t ws_vm2013 = (workstation_VM2013_t) ws_clm03;
 589     if (pm == ws_vm2013->sub_ws)
 590       xbt_dynar_push(dyn, &ws_vm2013->sub_ws);
 591   }
 592
 593   return dyn;
 594 }
 595
 596
 597 static void surf_workstation_model_init_internal(void)
 598 {
 599   surf_model_t model = surf_model_init();
 600
 601   model->name = "Workstation";
 602   model->type = SURF_MODEL_TYPE_WORKSTATION;
 603   model->action_unref     = ws_action_unref;
 604   model->action_cancel    = ws_action_cancel;
 605   model->action_state_set = ws_action_state_set;
 606
 607   model->model_private->resource_used         = ws_resource_used;
 608   model->model_private->share_resources       = ws_share_resources;
 609   model->model_private->update_actions_state  = ws_update_actions_state;
 610   model->model_private->update_resource_state = ws_update_resource_state;
 611   model->model_private->finalize              = ws_finalize;
 612
 613   model->suspend          = ws_action_suspend;
 614   model->resume           = ws_action_resume;
 615   model->is_suspended     = ws_action_is_suspended;
 616   model->set_max_duration = ws_action_set_max_duration;
 617   model->set_priority     = ws_action_set_priority;
 618   model->set_bound        = ws_action_set_bound;
 619   #ifdef HAVE_TRACING
 620   model->set_category     = ws_action_set_category;
 621   #endif
 622   model->get_remains      = ws_action_get_remains;
 623   #ifdef HAVE_LATENCY_BOUND_TRACKING
 624   model->get_latency_limited = ws_get_latency_limited;
 625   #endif
 626
 627   /* For VM support, we have a surf cpu model object for each workstation model
 628    * object. The physical workstation model object has the cpu model object of
 629    * the physical machine layer. */
 630   xbt_assert(surf_cpu_model_pm);
 631   model->extension.workstation.cpu_model = surf_cpu_model_pm;
 632
 633   model->extension.workstation.execute   = ws_execute;
 634   model->extension.workstation.sleep     = ws_action_sleep;
 635   model->extension.workstation.get_state = ws_get_state;
 636   model->extension.workstation.set_state = ws_set_state;
 637   model->extension.workstation.get_core  = ws_get_core;
 638   model->extension.workstation.get_speed = ws_get_speed;
 639   model->extension.workstation.get_available_speed =
 640       ws_get_available_speed;
 641
 642   model->extension.workstation.communicate           = ws_communicate;
 643   model->extension.workstation.get_route             = ws_get_route;
 644   model->extension.workstation.execute_parallel_task = ws_execute_parallel_task;
 645   model->extension.workstation.get_link_bandwidth    = ws_get_link_bandwidth;
 646   model->extension.workstation.get_link_latency      = ws_get_link_latency;
 647   model->extension.workstation.link_shared           = ws_link_shared;
 648   model->extension.workstation.get_properties        = ws_get_properties;
 649
 650   model->extension.workstation.open   = ws_action_open;
 651   model->extension.workstation.close  = ws_action_close;
 652   model->extension.workstation.read   = ws_action_read;
 653   model->extension.workstation.write  = ws_action_write;
 654   model->extension.workstation.unlink = ws_file_unlink;
 655   model->extension.workstation.ls     = ws_action_ls;
 656
 657   model->extension.workstation.get_params = ws_get_params;
 658   model->extension.workstation.set_params = ws_set_params;
 659   model->extension.workstation.get_vms    = ws_get_vms;
 660
 661   surf_workstation_model = model;
 662 }
 663
 664 void surf_workstation_model_init_current_default(void)
 665 {
 666   xbt_cfg_setdefault_boolean(_sg_cfg_set, "network/crosstraffic", xbt_strdup("yes"));
 667   surf_cpu_model_init_Cas01();
 668   surf_network_model_init_LegrandVelho();
 669
 670   /* surf_cpu_mode_pm and surf_network_model must be initialized in advance. */
 671   xbt_assert(surf_cpu_model_pm);
 672   xbt_assert(surf_network_model);
 673   surf_workstation_model_init_internal();
 674
 675   xbt_dynar_push(model_list, &surf_workstation_model);
 676   xbt_dynar_push(model_list_invoke, &surf_workstation_model);
 677   sg_platf_host_add_cb(workstation_new);
 678 }
 679
 680 void surf_workstation_model_init_compound()
 681 {
 682   xbt_assert(surf_cpu_model_pm, "No CPU model defined yet!");
 683   xbt_assert(surf_network_model, "No network model defined yet!");
 684
 685   surf_workstation_model_init_internal();
 686   xbt_dynar_push(model_list, &surf_workstation_model);
 687   xbt_dynar_push(model_list_invoke, &surf_workstation_model);
 688   sg_platf_host_add_cb(workstation_new);
 689 }