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