src/surf/storage.c

   1 /* Copyright (c) 2004, 2005, 2006, 2007, 2008, 2009, 2010, 2011, 2012. 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 "xbt/file_stat.h"
  10 #include "portable.h"
  11 #include "surf_private.h"
  12 #include "storage_private.h"
  13 #include "surf/surf_resource.h"
  14
  15 XBT_LOG_NEW_DEFAULT_SUBCATEGORY(surf_storage, surf,
  16                                 "Logging specific to the SURF storage module");
  17
  18 xbt_lib_t storage_lib;
  19 int ROUTING_STORAGE_LEVEL;      //Routing for storagelevel
  20 int ROUTING_STORAGE_HOST_LEVEL;
  21 int SURF_STORAGE_LEVEL;
  22 xbt_lib_t storage_type_lib;
  23 int ROUTING_STORAGE_TYPE_LEVEL; //Routing for storage_type level
  24
  25 xbt_dynar_t mount_list = NULL;  /* temporary store of current mount storage */
  26
  27 surf_model_t surf_storage_model = NULL;
  28 lmm_system_t storage_maxmin_system = NULL;
  29 static int storage_selective_update = 0;
  30 static xbt_swag_t
  31     storage_running_action_set_that_does_not_need_being_checked = NULL;
  32
  33 #define GENERIC_LMM_ACTION(action) action->generic_lmm_action
  34 #define GENERIC_ACTION(action) GENERIC_LMM_ACTION(action).generic_action
  35
  36 typedef struct surf_storage {
  37   s_surf_resource_t generic_resource;
  38   const char* type;
  39   const char* content; /*should be a dict */
  40 } s_surf_storage_t, *surf_storage_t;
  41
  42 static xbt_dict_t parse_storage_content(char *filename, unsigned long *used_size);
  43 static void storage_action_state_set(surf_action_t action, e_surf_action_state_t state);
  44 static surf_action_t storage_action_execute (void *storage, size_t size, e_surf_action_storage_type_t type);
  45
  46 static surf_action_t storage_action_stat(void *storage, surf_file_t stream)
  47 {
  48   surf_action_t action = storage_action_execute(storage,0, STAT);
  49   action->file = stream;
  50   action->stat = stream->content->stat;
  51   return action;
  52 }
  53
  54 static surf_action_t storage_action_open(void *storage, const char* mount, const char* path, const char* mode)
  55 {
  56   XBT_DEBUG("\tOpen file '%s'",path);
  57   char *storage_type_id = xbt_lib_get_or_null(
  58       storage_lib,
  59       ((storage_t)storage)->generic_resource.name,
  60       ROUTING_STORAGE_LEVEL);
  61   storage_type_t storage_type = xbt_lib_get_or_null(storage_type_lib, storage_type_id,ROUTING_STORAGE_TYPE_LEVEL);
  62   xbt_dict_t content_dict = ((storage_t)storage)->content;
  63   surf_stat_t content = xbt_dict_get(content_dict,path);
  64
  65   surf_file_t file = xbt_new0(s_surf_file_t,1);
  66   file->name = xbt_strdup(path);
  67   file->content = content;
  68   file->storage = mount;
  69
  70   surf_action_t action = storage_action_execute(storage,0, OPEN);
  71   action->file = (void *)file;
  72   return action;
  73 }
  74
  75 static surf_action_t storage_action_close(void *storage, surf_file_t fp)
  76 {
  77   char *filename = fp->name;
  78   free(fp->name);
  79   fp->content = NULL;
  80   xbt_free(fp);
  81   surf_action_t action = storage_action_execute(storage,0, CLOSE);
  82   XBT_DEBUG("\tClose file '%s'",filename);
  83   return action;
  84 }
  85
  86 static surf_action_t storage_action_read(void *storage, void* ptr, size_t size, size_t nmemb, surf_file_t stream)
  87 {
  88   char *filename = stream->name;
  89   surf_stat_t content = stream->content;
  90   XBT_DEBUG("\tRead file '%s' size '%zu/%zu'",filename,size,content->stat.size);
  91   if(size > content->stat.size)
  92     size = content->stat.size;
  93   surf_action_t action = storage_action_execute(storage,size,READ);
  94   return action;
  95 }
  96
  97 static surf_action_t storage_action_write(void *storage, const void* ptr, size_t size, size_t nmemb, surf_file_t stream)
  98 {
  99   char *filename = stream->name;
 100   surf_stat_t content = stream->content;
 101   XBT_DEBUG("\tWrite file '%s' size '%zu/%zu'",filename,size,content->stat.size);
 102
 103   // update file size
 104   content->stat.size += size;
 105   // update disk space
 106   ((storage_t)storage)->used_size =+ size;
 107
 108   surf_action_t action = storage_action_execute(storage,size,WRITE);
 109   // if(used_size==size) {
 110   //   storage_action_state_set((surf_action_t) action, SURF_ACTION_FAILED);
 111   // }
 112   return action;
 113 }
 114
 115 static surf_action_t storage_action_execute (void *storage, size_t size, e_surf_action_storage_type_t type)
 116 {
 117   surf_action_storage_t action = NULL;
 118   storage_t STORAGE = storage;
 119
 120   XBT_IN("(%s,%zu)", surf_resource_name(STORAGE), size);
 121   action =
 122       surf_action_new(sizeof(s_surf_action_storage_t), size, surf_storage_model,
 123           STORAGE->state_current != SURF_RESOURCE_ON);
 124
 125   GENERIC_LMM_ACTION(action).suspended = 0;     /* Should be useless because of the
 126                                                    calloc but it seems to help valgrind... */
 127
 128   GENERIC_LMM_ACTION(action).variable =
 129       lmm_variable_new(storage_maxmin_system, action, 1.0, -1.0 , 3);
 130
 131   // Must be less than the max bandwidth for all actions
 132   lmm_expand(storage_maxmin_system, STORAGE->constraint,
 133              GENERIC_LMM_ACTION(action).variable, 1.0);
 134
 135   switch(type) {
 136   case OPEN:
 137   case CLOSE:
 138   case STAT:
 139     break;
 140   case READ:
 141     lmm_expand(storage_maxmin_system, STORAGE->constraint_read,
 142                GENERIC_LMM_ACTION(action).variable, 1.0);
 143     break;
 144   case WRITE:
 145     lmm_expand(storage_maxmin_system, STORAGE->constraint_write,
 146                GENERIC_LMM_ACTION(action).variable, 1.0);
 147     break;
 148   }
 149
 150   XBT_OUT();
 151   return (surf_action_t) action;
 152 }
 153
 154 static void* storage_create_resource(const char* id, const char* model,const char* type_id,const char* content_name)
 155 {
 156   storage_t storage = NULL;
 157
 158   xbt_assert(!surf_storage_resource_by_name(id),
 159               "Storage '%s' declared several times in the platform file",
 160               id);
 161   storage = (storage_t) surf_resource_new(sizeof(s_storage_t),
 162           surf_storage_model, id,NULL);
 163
 164   storage->state_current = SURF_RESOURCE_ON;
 165   storage->used_size = 0;
 166   storage->size = 0;
 167
 168   storage_type_t storage_type = xbt_lib_get_or_null(storage_type_lib, type_id,ROUTING_STORAGE_TYPE_LEVEL);
 169   double Bread  = atof(xbt_dict_get(storage_type->properties,"Bread"));
 170   double Bwrite = atof(xbt_dict_get(storage_type->properties,"Bwrite"));
 171   double Bconnection   = atof(xbt_dict_get(storage_type->properties,"Bconnection"));
 172   XBT_DEBUG("Create resource with Bconnection '%f' Bread '%f' Bwrite '%f' and Size '%ld'",Bconnection,Bread,Bwrite,storage_type->size);
 173   storage->constraint       = lmm_constraint_new(storage_maxmin_system, storage, Bconnection);
 174   storage->constraint_read  = lmm_constraint_new(storage_maxmin_system, storage, Bread);
 175   storage->constraint_write = lmm_constraint_new(storage_maxmin_system, storage, Bwrite);
 176   storage->content = parse_storage_content((char*)content_name,&(storage->used_size));
 177   storage->size = storage_type->size;
 178
 179   xbt_lib_set(storage_lib, id, SURF_STORAGE_LEVEL, storage);
 180
 181   XBT_DEBUG("SURF storage create resource\n\t\tid '%s'\n\t\ttype '%s' \n\t\tmodel '%s' \n\t\tproperties '%p'\n\t\tBread '%f'\n",
 182       id,
 183       model,
 184       type_id,
 185       storage_type->properties,
 186       Bread);
 187
 188   return storage;
 189 }
 190
 191 static void storage_finalize(void)
 192 {
 193   lmm_system_free(storage_maxmin_system);
 194   storage_maxmin_system = NULL;
 195
 196   surf_model_exit(surf_storage_model);
 197   surf_storage_model = NULL;
 198
 199   xbt_swag_free
 200       (storage_running_action_set_that_does_not_need_being_checked);
 201   storage_running_action_set_that_does_not_need_being_checked = NULL;
 202 }
 203
 204 static void storage_update_actions_state(double now, double delta)
 205 {
 206   surf_action_storage_t action = NULL;
 207   surf_action_storage_t next_action = NULL;
 208   xbt_swag_t running_actions = surf_storage_model->states.running_action_set;
 209
 210   // Update the disk usage
 211 //  foreach disk {
 212 //    rate = 0
 213 //    foreach write_action in disk {
 214 //      rate += value(variable(action))
 215 //     }
 216 //   used_size += delta * rate
 217 //  }
 218   xbt_swag_foreach_safe(action, next_action, running_actions) {
 219     double_update(&(GENERIC_ACTION(action).remains),
 220                   lmm_variable_getvalue(GENERIC_LMM_ACTION(action).variable) * delta);
 221     if (GENERIC_LMM_ACTION(action).generic_action.max_duration != NO_MAX_DURATION)
 222       double_update(&(GENERIC_ACTION(action).max_duration), delta);
 223     // if(remains>0 and weight(variable(action))>0 && used_size == size) {
 224     // GENERIC_ACTION(action).finish = surf_get_clock();
 225     // storage_action_state_set((surf_action_t) action, SURF_ACTION_FAILED);
 226     // } else
 227     if ((GENERIC_ACTION(action).remains <= 0) &&
 228         (lmm_get_variable_weight(GENERIC_LMM_ACTION(action).variable) > 0)) {
 229       GENERIC_ACTION(action).finish = surf_get_clock();
 230       storage_action_state_set((surf_action_t) action, SURF_ACTION_DONE);
 231     } else if ((GENERIC_ACTION(action).max_duration != NO_MAX_DURATION) &&
 232                (GENERIC_ACTION(action).max_duration <= 0)) {
 233       GENERIC_ACTION(action).finish = surf_get_clock();
 234       storage_action_state_set((surf_action_t) action, SURF_ACTION_DONE);
 235     }
 236   }
 237
 238   return;
 239 }
 240
 241 static double storage_share_resources(double NOW)
 242 {
 243   XBT_DEBUG("storage_share_resources %f",NOW);
 244   s_surf_action_storage_t action;
 245   double min_completion = generic_maxmin_share_resources(surf_storage_model->states.running_action_set,
 246       xbt_swag_offset(action, generic_lmm_action.variable),
 247       storage_maxmin_system, lmm_solve);
 248   /*
 249    foreach(disk) {
 250       rate = 0
 251       foreach write_action in disk {
 252           rate += value(variable(action));
 253       }
 254       if(rate>0) {
 255         min_completion = MIN(min_completion, (size-used_size)/rate);
 256       }
 257   }*/
 258
 259   return min_completion;
 260 }
 261
 262 static int storage_resource_used(void *resource_id)
 263 {
 264   THROW_UNIMPLEMENTED;
 265   return 0;
 266 }
 267
 268 static void storage_resources_state(void *id, tmgr_trace_event_t event_type,
 269                                  double value, double time)
 270 {
 271   THROW_UNIMPLEMENTED;
 272 }
 273
 274 static int storage_action_unref(surf_action_t action)
 275 {
 276   action->refcount--;
 277   if (!action->refcount) {
 278     xbt_swag_remove(action, action->state_set);
 279     if (((surf_action_lmm_t) action)->variable)
 280       lmm_variable_free(storage_maxmin_system,
 281                         ((surf_action_lmm_t) action)->variable);
 282 #ifdef HAVE_TRACING
 283     xbt_free(action->category);
 284 #endif
 285     surf_action_free(&action);
 286     return 1;
 287   }
 288   return 0;
 289 }
 290
 291 static void storage_action_cancel(surf_action_t action)
 292 {
 293   surf_action_state_set(action, SURF_ACTION_FAILED);
 294   return;
 295 }
 296
 297 static void storage_action_state_set(surf_action_t action, e_surf_action_state_t state)
 298 {
 299   surf_action_state_set(action, state);
 300   return;
 301 }
 302
 303 static void storage_action_suspend(surf_action_t action)
 304 {
 305   XBT_IN("(%p)", action);
 306   if (((surf_action_lmm_t) action)->suspended != 2) {
 307     lmm_update_variable_weight(storage_maxmin_system,
 308                                ((surf_action_lmm_t) action)->variable,
 309                                0.0);
 310     ((surf_action_lmm_t) action)->suspended = 1;
 311   }
 312   XBT_OUT();
 313 }
 314
 315 static void storage_action_resume(surf_action_t action)
 316 {
 317   THROW_UNIMPLEMENTED;
 318 }
 319
 320 static int storage_action_is_suspended(surf_action_t action)
 321 {
 322   return (((surf_action_lmm_t) action)->suspended == 1);
 323 }
 324
 325 static void storage_action_set_max_duration(surf_action_t action, double duration)
 326 {
 327   THROW_UNIMPLEMENTED;
 328 }
 329
 330 static void storage_action_set_priority(surf_action_t action, double priority)
 331 {
 332   THROW_UNIMPLEMENTED;
 333 }
 334
 335 static void parse_storage_init(sg_platf_storage_cbarg_t storage)
 336 {
 337   void* stype = xbt_lib_get_or_null(storage_type_lib,
 338                                     storage->type_id,
 339                                     ROUTING_STORAGE_TYPE_LEVEL);
 340   if(!stype) xbt_die("No storage type '%s'",storage->type_id);
 341
 342   // if storage content is not specified use the content of storage_type if exist
 343   if(!strcmp(storage->content,"") && strcmp(((storage_type_t) stype)->content,"")){
 344     storage->content = ((storage_type_t) stype)->content;
 345     XBT_DEBUG("For disk '%s' content is empty, use the content of storage type '%s'",storage->id,((storage_type_t) stype)->type_id);
 346   }
 347
 348   XBT_DEBUG("SURF storage create resource\n\t\tid '%s'\n\t\ttype '%s' \n\t\tmodel '%s' \n\t\tcontent '%s'\n\t\tproperties '%p'\n",
 349       storage->id,
 350       ((storage_type_t) stype)->model,
 351       ((storage_type_t) stype)->type_id,
 352       storage->content,
 353       ((storage_type_t) stype)->properties);
 354
 355   storage_create_resource(storage->id,
 356      ((storage_type_t) stype)->model,
 357      ((storage_type_t) stype)->type_id,
 358      storage->content);
 359 }
 360
 361 static void parse_mstorage_init(sg_platf_mstorage_cbarg_t mstorage)
 362 {
 363   XBT_DEBUG("parse_mstorage_init");
 364 }
 365
 366 static void parse_storage_type_init(sg_platf_storage_type_cbarg_t storagetype_)
 367 {
 368   XBT_DEBUG("parse_storage_type_init");
 369 }
 370
 371 static void parse_mount_init(sg_platf_mount_cbarg_t mount)
 372 {
 373   XBT_DEBUG("parse_mount_init");
 374 }
 375
 376 static void storage_define_callbacks()
 377 {
 378   sg_platf_storage_add_cb(parse_storage_init);
 379   sg_platf_storage_type_add_cb(parse_storage_type_init);
 380   sg_platf_mstorage_add_cb(parse_mstorage_init);
 381   sg_platf_mount_add_cb(parse_mount_init);
 382 }
 383
 384 static void surf_storage_model_init_internal(void)
 385 {
 386   s_surf_action_t action;
 387
 388   XBT_DEBUG("surf_storage_model_init_internal");
 389   surf_storage_model = surf_model_init();
 390
 391   storage_running_action_set_that_does_not_need_being_checked =
 392       xbt_swag_new(xbt_swag_offset(action, state_hookup));
 393
 394   surf_storage_model->name = "Storage";
 395   surf_storage_model->action_unref = storage_action_unref;
 396   surf_storage_model->action_cancel = storage_action_cancel;
 397   surf_storage_model->action_state_set = storage_action_state_set;
 398
 399   surf_storage_model->model_private->finalize = storage_finalize;
 400   surf_storage_model->model_private->update_actions_state = storage_update_actions_state;
 401   surf_storage_model->model_private->share_resources = storage_share_resources;
 402   surf_storage_model->model_private->resource_used = storage_resource_used;
 403   surf_storage_model->model_private->update_resource_state = storage_resources_state;
 404
 405   surf_storage_model->suspend = storage_action_suspend;
 406   surf_storage_model->resume = storage_action_resume;
 407   surf_storage_model->is_suspended = storage_action_is_suspended;
 408   surf_storage_model->set_max_duration = storage_action_set_max_duration;
 409   surf_storage_model->set_priority = storage_action_set_priority;
 410
 411   surf_storage_model->extension.storage.open = storage_action_open;
 412   surf_storage_model->extension.storage.close = storage_action_close;
 413   surf_storage_model->extension.storage.read = storage_action_read;
 414   surf_storage_model->extension.storage.write = storage_action_write;
 415   surf_storage_model->extension.storage.stat = storage_action_stat;
 416   surf_storage_model->extension.storage.create_resource = storage_create_resource;
 417
 418   if (!storage_maxmin_system) {
 419     storage_maxmin_system = lmm_system_new(storage_selective_update);
 420   }
 421
 422 }
 423
 424 void surf_storage_model_init_default(void)
 425 {
 426   surf_storage_model_init_internal();
 427   storage_define_callbacks();
 428
 429   xbt_dynar_push(model_list, &surf_storage_model);
 430 }
 431
 432 static void storage_parse_storage(sg_platf_storage_cbarg_t storage)
 433 {
 434   xbt_assert(!xbt_lib_get_or_null(storage_lib, storage->id,ROUTING_STORAGE_LEVEL),
 435                "Reading a storage, processing unit \"%s\" already exists", storage->id);
 436
 437   // Verification of an existing type_id
 438 #ifndef NDEBUG
 439   void* storage_type = xbt_lib_get_or_null(storage_type_lib, storage->type_id,ROUTING_STORAGE_TYPE_LEVEL);
 440 #endif
 441   xbt_assert(storage_type,"Reading a storage, type id \"%s\" does not exists", storage->type_id);
 442
 443   XBT_DEBUG("ROUTING Create a storage name '%s' with type_id '%s' and content '%s'",
 444       storage->id,
 445       storage->type_id,
 446       storage->content);
 447
 448   xbt_lib_set(storage_lib,
 449       storage->id,
 450       ROUTING_STORAGE_LEVEL,
 451       (void *) xbt_strdup(storage->type_id));
 452 }
 453
 454 static void free_storage_content(void *p)
 455 {
 456   surf_stat_t content = p;
 457   free(content->stat.date);
 458   free(content->stat.group);
 459   free(content->stat.time);
 460   free(content->stat.user);
 461   free(content->stat.user_rights);
 462   free(content);
 463 }
 464
 465 static xbt_dict_t parse_storage_content(char *filename, unsigned long *used_size)
 466 {
 467   *used_size = 0;
 468   if ((!filename) || (strcmp(filename, "") == 0))
 469     return NULL;
 470
 471   xbt_dict_t parse_content = xbt_dict_new_homogeneous(free_storage_content);
 472   FILE *file = NULL;
 473
 474   file = surf_fopen(filename, "r");
 475   xbt_assert(file != NULL, "Cannot open file '%s' (path=%s)", filename,
 476               xbt_str_join(surf_path, ":"));
 477
 478   char *line = NULL;
 479   size_t len = 0;
 480   ssize_t read;
 481   char user_rights[12];
 482   char user[100];
 483   char group[100];
 484   char date[12];
 485   char time[12];
 486   char path[1024];
 487   int nb;
 488   long size;
 489
 490   surf_stat_t content;
 491
 492   while ((read = getline(&line, &len, file)) != -1) {
 493     content = xbt_new0(s_surf_stat_t,1);
 494     if(sscanf(line,"%s %d %s %s %ld %s %s %s",user_rights,&nb,user,group,&size,date,time,path)==8) {
 495       content->stat.date = xbt_strdup(date);
 496       content->stat.group = xbt_strdup(group);
 497       content->stat.size = size;
 498       content->stat.time = xbt_strdup(time);
 499       content->stat.user = xbt_strdup(user);
 500       content->stat.user_rights = xbt_strdup(user_rights);
 501       *used_size += content->stat.size;
 502       xbt_dict_set(parse_content,path,content,NULL);
 503     } else {
 504       xbt_die("Be sure of passing a good format for content file.\n");
 505       // You can generate this kind of file with command line:
 506       // find /path/you/want -type f -exec ls -l {} \; 2>/dev/null > ./content.txt
 507     }
 508   }
 509   if (line)
 510       free(line);
 511   fclose(file);
 512   return parse_content;
 513 }
 514
 515 static void storage_parse_storage_type(sg_platf_storage_type_cbarg_t storage_type)
 516 {
 517   xbt_assert(!xbt_lib_get_or_null(storage_type_lib, storage_type->id,ROUTING_STORAGE_TYPE_LEVEL),
 518                "Reading a storage type, processing unit \"%s\" already exists", storage_type->id);
 519
 520   storage_type_t stype = xbt_new0(s_storage_type_t, 1);
 521   stype->model = xbt_strdup(storage_type->model);
 522   stype->properties = storage_type->properties;
 523   stype->content = xbt_strdup(storage_type->content);
 524   stype->type_id = xbt_strdup(storage_type->id);
 525   stype->size = storage_type->size * 1000000000; /* storage_type->size is in Gbytes and stype->sizeis in bytes */
 526
 527   XBT_DEBUG("ROUTING Create a storage type id '%s' with model '%s' content '%s'",
 528       stype->type_id,
 529       stype->model,
 530       storage_type->content);
 531
 532   xbt_lib_set(storage_type_lib,
 533       stype->type_id,
 534       ROUTING_STORAGE_TYPE_LEVEL,
 535       (void *) stype);
 536 }
 537 static void storage_parse_mstorage(sg_platf_mstorage_cbarg_t mstorage)
 538 {
 539   THROW_UNIMPLEMENTED;
 540 //  mount_t mnt = xbt_new0(s_mount_t, 1);
 541 //  mnt->id = xbt_strdup(mstorage->type_id);
 542 //  mnt->name = xbt_strdup(mstorage->name);
 543 //
 544 //  if(!mount_list){
 545 //    XBT_DEBUG("Creata a Mount list for %s",A_surfxml_host_id);
 546 //    mount_list = xbt_dynar_new(sizeof(char *), NULL);
 547 //  }
 548 //  xbt_dynar_push(mount_list,(void *) mnt);
 549 //  free(mnt->id);
 550 //  free(mnt->name);
 551 //  xbt_free(mnt);
 552 //  XBT_DEBUG("ROUTING Mount a storage name '%s' with type_id '%s'",mstorage->name, mstorage->id);
 553 }
 554
 555 static void mount_free(void *p)
 556 {
 557   mount_t mnt = p;
 558   xbt_free(mnt->name);
 559 }
 560
 561 static void storage_parse_mount(sg_platf_mount_cbarg_t mount)
 562 {
 563   // Verification of an existing storage
 564 #ifndef NDEBUG
 565   void* storage = xbt_lib_get_or_null(storage_lib, mount->id,ROUTING_STORAGE_LEVEL);
 566 #endif
 567   xbt_assert(storage,"Disk id \"%s\" does not exists", mount->id);
 568
 569   XBT_DEBUG("ROUTING Mount '%s' on '%s'",mount->id, mount->name);
 570
 571   s_mount_t mnt;
 572   mnt.id = surf_storage_resource_by_name(mount->id);
 573   mnt.name = xbt_strdup(mount->name);
 574
 575   if(!mount_list){
 576     XBT_DEBUG("Create a Mount list for %s",A_surfxml_host_id);
 577     mount_list = xbt_dynar_new(sizeof(s_mount_t), mount_free);
 578   }
 579   xbt_dynar_push(mount_list,&mnt);
 580 }
 581
 582 static XBT_INLINE void routing_storage_type_free(void *r)
 583 {
 584   storage_type_t stype = r;
 585   free(stype->model);
 586   free(stype->type_id);
 587   free(stype->content);
 588   xbt_dict_free(&(stype->properties));
 589   free(stype);
 590 }
 591
 592 static XBT_INLINE void surf_storage_resource_free(void *r)
 593 {
 594   // specific to storage
 595   storage_t storage = r;
 596   xbt_dict_free(&storage->content);
 597   // generic resource
 598   surf_resource_free(r);
 599 }
 600
 601 static XBT_INLINE void routing_storage_host_free(void *r)
 602 {
 603   xbt_dynar_t dyn = r;
 604   xbt_dynar_free(&dyn);
 605 }
 606
 607 void storage_register_callbacks() {
 608
 609   ROUTING_STORAGE_LEVEL = xbt_lib_add_level(storage_lib,xbt_free);
 610   ROUTING_STORAGE_HOST_LEVEL = xbt_lib_add_level(storage_lib,routing_storage_host_free);
 611   ROUTING_STORAGE_TYPE_LEVEL = xbt_lib_add_level(storage_type_lib,routing_storage_type_free);
 612   SURF_STORAGE_LEVEL = xbt_lib_add_level(storage_lib,surf_storage_resource_free);
 613
 614   sg_platf_storage_add_cb(storage_parse_storage);
 615   sg_platf_mstorage_add_cb(storage_parse_mstorage);
 616   sg_platf_storage_type_add_cb(storage_parse_storage_type);
 617   sg_platf_mount_add_cb(storage_parse_mount);
 618 }