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[simgrid.git] / src / surf / storage.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
14 XBT_LOG_NEW_DEFAULT_SUBCATEGORY(surf_storage, surf,
15                                 "Logging specific to the SURF storage module");
16
17 xbt_lib_t storage_lib;
18 int ROUTING_STORAGE_LEVEL;      //Routing for storagelevel
19 int ROUTING_STORAGE_HOST_LEVEL;
20 int SURF_STORAGE_LEVEL;
21 xbt_lib_t storage_type_lib;
22 int ROUTING_STORAGE_TYPE_LEVEL; //Routing for storage_type level
23
24 xbt_dynar_t mount_list = NULL;  /* temporary store of current mount storage */
25
26 surf_model_t surf_storage_model = NULL;
27 lmm_system_t storage_maxmin_system = NULL;
28 static int storage_selective_update = 0;
29 static xbt_swag_t
30     storage_running_action_set_that_does_not_need_being_checked = NULL;
31
32 static xbt_dynar_t storage_list;
33
34 #define GENERIC_LMM_ACTION(action) action->generic_lmm_action
35 #define GENERIC_ACTION(action) GENERIC_LMM_ACTION(action).generic_action
36
37 static xbt_dict_t parse_storage_content(char *filename, unsigned long *used_size);
38 static int storage_action_unref(surf_action_t action);
39 static void storage_action_state_set(surf_action_t action, e_surf_action_state_t state);
40 static surf_action_t storage_action_execute (void *storage, double size, e_surf_action_storage_type_t type);
41
42 static surf_action_t storage_action_ls(void *storage, const char* path)
43 {
44   surf_action_t action = storage_action_execute(storage,0, LS);
45   action->ls_dict = NULL;
46   xbt_dict_t ls_dict = xbt_dict_new();
47
48   char* key;
49   unsigned long size = 0;
50   xbt_dict_cursor_t cursor = NULL;
51
52   xbt_dynar_t dyn = NULL;
53   char* file = NULL;
54
55   // for each file in the storage content
56   xbt_dict_foreach(((storage_t)storage)->content,cursor,key,size){
57     // Search if file start with the prefix 'path'
58     if(xbt_str_start_with(key,path)){
59       file = &key[strlen(path)];
60
61       // Split file with '/'
62       dyn = xbt_str_split(file,"/");
63       file = xbt_dynar_get_as(dyn,0,char*);
64
65       // file
66       if(xbt_dynar_length(dyn) == 1){
67         xbt_dict_set(ls_dict,file,&size,NULL);
68       }
69       // Directory
70       else
71       {
72         // if directory does not exist yet in the dictionary
73         if(!xbt_dict_get_or_null(ls_dict,file))
74           xbt_dict_set(ls_dict,file,NULL,NULL);
75       }
76       xbt_dynar_free(&dyn);
77     }
78   }
79
80   action->ls_dict = ls_dict;
81   return action;
82 }
83
84 static surf_action_t storage_action_open(void *storage, const char* mount,
85                                          const char* path)
86 {
87   XBT_DEBUG("\tOpen file '%s'",path);
88   xbt_dict_t content_dict = ((storage_t)storage)->content;
89   size_t size = (size_t) xbt_dict_get_or_null(content_dict,path);
90   // if file does not exist create an empty file
91   if(!size){
92     xbt_dict_set(content_dict,path,&size,NULL);
93     XBT_DEBUG("File '%s' was not found, file created.",path);
94   }
95   surf_file_t file = xbt_new0(s_surf_file_t,1);
96   file->name = xbt_strdup(path);
97   file->size = size;
98   file->storage = xbt_strdup(mount);
99
100   surf_action_t action = storage_action_execute(storage,0, OPEN);
101   action->file = (void *)file;
102   return action;
103 }
104
105 static surf_action_t storage_action_close(void *storage, surf_file_t fd)
106 {
107   char *filename = fd->name;
108   XBT_DEBUG("\tClose file '%s' size '%zu'",filename,fd->size);
109   // unref write actions from storage
110   surf_action_storage_t write_action;
111   unsigned int i;
112   xbt_dynar_foreach(((storage_t)storage)->write_actions,i,write_action) {
113     if ((write_action->generic_lmm_action.generic_action.file) == fd) {
114       xbt_dynar_cursor_rm(((storage_t)storage)->write_actions, &i);
115       storage_action_unref((surf_action_t) write_action);
116     }
117   }
118
119   free(fd->name);
120   free(fd->storage);
121   xbt_free(fd);
122   surf_action_t action = storage_action_execute(storage,0, CLOSE);
123   return action;
124 }
125
126 static surf_action_t storage_action_read(void *storage, void* ptr, double size,
127                                          size_t nmemb, surf_file_t fd)
128 {
129   if(size > fd->size)
130     size = fd->size;
131   surf_action_t action = storage_action_execute(storage,size,READ);
132   return action;
133 }
134
135 static surf_action_t storage_action_write(void *storage, const void* ptr,
136                                           size_t size, size_t nmemb,
137                                           surf_file_t fd)
138 {
139   char *filename = fd->name;
140   XBT_DEBUG("\tWrite file '%s' size '%zu/%zu'",filename,size,fd->size);
141
142   surf_action_t action = storage_action_execute(storage,size,WRITE);
143   action->file = fd;
144
145   // If the storage is full
146   if(((storage_t)storage)->used_size==((storage_t)storage)->size) {
147     storage_action_state_set((surf_action_t) action, SURF_ACTION_FAILED);
148   }
149   return action;
150 }
151
152 static surf_action_t storage_action_execute (void *storage, double size, e_surf_action_storage_type_t type)
153 {
154   surf_action_storage_t action = NULL;
155   storage_t STORAGE = storage;
156
157   XBT_IN("(%s,%f", surf_resource_name(STORAGE), size);
158   action =
159       surf_action_new(sizeof(s_surf_action_storage_t), size, surf_storage_model,
160           STORAGE->state_current != SURF_RESOURCE_ON);
161
162   // Save the storage on action
163   action->storage = storage;
164   GENERIC_LMM_ACTION(action).suspended = 0;     /* Should be useless because of the
165                                                    calloc but it seems to help valgrind... */
166
167   GENERIC_LMM_ACTION(action).variable =
168       lmm_variable_new(storage_maxmin_system, action, 1.0, -1.0 , 3);
169
170   // Must be less than the max bandwidth for all actions
171   lmm_expand(storage_maxmin_system, STORAGE->constraint,
172              GENERIC_LMM_ACTION(action).variable, 1.0);
173
174   switch(type) {
175   case OPEN:
176   case CLOSE:
177   case STAT:
178   case LS:
179     break;
180   case READ:
181     lmm_expand(storage_maxmin_system, STORAGE->constraint_read,
182                GENERIC_LMM_ACTION(action).variable, 1.0);
183     break;
184   case WRITE:
185     lmm_expand(storage_maxmin_system, STORAGE->constraint_write,
186                GENERIC_LMM_ACTION(action).variable, 1.0);
187     xbt_dynar_push(((storage_t)storage)->write_actions,&action);
188     surf_action_ref((surf_action_t) action);
189     break;
190   }
191   action->type = type;
192   XBT_OUT();
193   return (surf_action_t) action;
194 }
195
196 static void* storage_create_resource(const char* id, const char* model,const char* type_id,const char* content_name)
197 {
198   storage_t storage = NULL;
199
200   xbt_assert(!surf_storage_resource_priv(surf_storage_resource_by_name(id)),
201               "Storage '%s' declared several times in the platform file",
202               id);
203   storage = (storage_t) surf_resource_new(sizeof(s_storage_t),
204           surf_storage_model, id,NULL);
205
206   storage->state_current = SURF_RESOURCE_ON;
207   storage->used_size = 0;
208   storage->size = 0;
209   storage->write_actions = xbt_dynar_new(sizeof(char *),NULL);
210
211   storage_type_t storage_type = xbt_lib_get_or_null(storage_type_lib, type_id,ROUTING_STORAGE_TYPE_LEVEL);
212   double Bread  = atof(xbt_dict_get(storage_type->properties,"Bread"));
213   double Bwrite = atof(xbt_dict_get(storage_type->properties,"Bwrite"));
214   double Bconnection   = atof(xbt_dict_get(storage_type->properties,"Bconnection"));
215   XBT_DEBUG("Create resource with Bconnection '%f' Bread '%f' Bwrite '%f' and Size '%ld'",Bconnection,Bread,Bwrite,storage_type->size);
216   storage->constraint       = lmm_constraint_new(storage_maxmin_system, storage, Bconnection);
217   storage->constraint_read  = lmm_constraint_new(storage_maxmin_system, storage, Bread);
218   storage->constraint_write = lmm_constraint_new(storage_maxmin_system, storage, Bwrite);
219   storage->content = parse_storage_content((char*)content_name,&(storage->used_size));
220   storage->size = storage_type->size;
221
222   xbt_lib_set(storage_lib, id, SURF_STORAGE_LEVEL, storage);
223
224   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",
225       id,
226       model,
227       type_id,
228       storage_type->properties,
229       Bread);
230
231   if(!storage_list) storage_list=xbt_dynar_new(sizeof(char *),NULL);
232   xbt_dynar_push(storage_list,&storage);
233
234   return storage;
235 }
236
237 static void storage_finalize(void)
238 {
239   lmm_system_free(storage_maxmin_system);
240   storage_maxmin_system = NULL;
241
242   surf_model_exit(surf_storage_model);
243   surf_storage_model = NULL;
244
245   xbt_dynar_free(&storage_list);
246
247   xbt_swag_free
248       (storage_running_action_set_that_does_not_need_being_checked);
249   storage_running_action_set_that_does_not_need_being_checked = NULL;
250 }
251
252 static void storage_update_actions_state(double now, double delta)
253 {
254   surf_action_storage_t action = NULL;
255   surf_action_storage_t next_action = NULL;
256   xbt_swag_t running_actions = surf_storage_model->states.running_action_set;
257
258   // Update the disk usage
259   // Update the file size
260   // For each action of type write
261   xbt_swag_foreach_safe(action, next_action, running_actions) {
262     if(action->type == WRITE)
263     {
264       double rate = lmm_variable_getvalue(GENERIC_LMM_ACTION(action).variable);
265       ((storage_t)(action->storage))->used_size += delta * rate; // disk usage
266       ((surf_action_t)action)->file->size += delta * rate; // file size
267     }
268   }
269
270   xbt_swag_foreach_safe(action, next_action, running_actions) {
271
272     double_update(&(GENERIC_ACTION(action).remains),
273                   lmm_variable_getvalue(GENERIC_LMM_ACTION(action).variable) * delta);
274
275     if (GENERIC_LMM_ACTION(action).generic_action.max_duration != NO_MAX_DURATION)
276       double_update(&(GENERIC_ACTION(action).max_duration), delta);
277
278     if(GENERIC_ACTION(action).remains > 0 &&
279         lmm_get_variable_weight(GENERIC_LMM_ACTION(action).variable) > 0 &&
280         ((storage_t)action->storage)->used_size == ((storage_t)action->storage)->size)
281     {
282       GENERIC_ACTION(action).finish = surf_get_clock();
283       storage_action_state_set((surf_action_t) action, SURF_ACTION_FAILED);
284     } else if ((GENERIC_ACTION(action).remains <= 0) &&
285         (lmm_get_variable_weight(GENERIC_LMM_ACTION(action).variable) > 0))
286     {
287       GENERIC_ACTION(action).finish = surf_get_clock();
288       storage_action_state_set((surf_action_t) action, SURF_ACTION_DONE);
289     } else if ((GENERIC_ACTION(action).max_duration != NO_MAX_DURATION) &&
290                (GENERIC_ACTION(action).max_duration <= 0))
291     {
292       GENERIC_ACTION(action).finish = surf_get_clock();
293       storage_action_state_set((surf_action_t) action, SURF_ACTION_DONE);
294     }
295   }
296
297   return;
298 }
299
300 static double storage_share_resources(double NOW)
301 {
302   XBT_DEBUG("storage_share_resources %f",NOW);
303   s_surf_action_storage_t action;
304   unsigned int i,j;
305   storage_t storage;
306   surf_action_storage_t write_action;
307
308   double min_completion = generic_maxmin_share_resources(surf_storage_model->states.running_action_set,
309       xbt_swag_offset(action, generic_lmm_action.variable),
310       storage_maxmin_system, lmm_solve);
311
312   double rate;
313   // Foreach disk
314   xbt_dynar_foreach(storage_list,i,storage)
315   {
316     rate = 0;
317     // Foreach write action on disk
318     xbt_dynar_foreach(storage->write_actions,j,write_action)
319     {
320       rate += lmm_variable_getvalue(write_action->generic_lmm_action.variable);
321     }
322     if(rate > 0)
323       min_completion = MIN(min_completion, (storage->size-storage->used_size)/rate);
324   }
325
326   return min_completion;
327 }
328
329 static int storage_resource_used(void *resource_id)
330 {
331   THROW_UNIMPLEMENTED;
332   return 0;
333 }
334
335 static void storage_resources_state(void *id, tmgr_trace_event_t event_type,
336                                  double value, double time)
337 {
338   THROW_UNIMPLEMENTED;
339 }
340
341 static int storage_action_unref(surf_action_t action)
342 {
343   action->refcount--;
344   if (!action->refcount) {
345     xbt_swag_remove(action, action->state_set);
346     if (((surf_action_lmm_t) action)->variable)
347       lmm_variable_free(storage_maxmin_system,
348                         ((surf_action_lmm_t) action)->variable);
349 #ifdef HAVE_TRACING
350     xbt_free(action->category);
351 #endif
352     surf_action_free(&action);
353     return 1;
354   }
355   return 0;
356 }
357
358 static void storage_action_cancel(surf_action_t action)
359 {
360   surf_action_state_set(action, SURF_ACTION_FAILED);
361   return;
362 }
363
364 static void storage_action_state_set(surf_action_t action, e_surf_action_state_t state)
365 {
366   surf_action_state_set(action, state);
367   return;
368 }
369
370 static void storage_action_suspend(surf_action_t action)
371 {
372   XBT_IN("(%p)", action);
373   if (((surf_action_lmm_t) action)->suspended != 2) {
374     lmm_update_variable_weight(storage_maxmin_system,
375                                ((surf_action_lmm_t) action)->variable,
376                                0.0);
377     ((surf_action_lmm_t) action)->suspended = 1;
378   }
379   XBT_OUT();
380 }
381
382 static void storage_action_resume(surf_action_t action)
383 {
384   THROW_UNIMPLEMENTED;
385 }
386
387 static int storage_action_is_suspended(surf_action_t action)
388 {
389   return (((surf_action_lmm_t) action)->suspended == 1);
390 }
391
392 static void storage_action_set_max_duration(surf_action_t action, double duration)
393 {
394   THROW_UNIMPLEMENTED;
395 }
396
397 static void storage_action_set_priority(surf_action_t action, double priority)
398 {
399   THROW_UNIMPLEMENTED;
400 }
401
402 static void parse_storage_init(sg_platf_storage_cbarg_t storage)
403 {
404   void* stype = xbt_lib_get_or_null(storage_type_lib,
405                                     storage->type_id,
406                                     ROUTING_STORAGE_TYPE_LEVEL);
407   if(!stype) xbt_die("No storage type '%s'",storage->type_id);
408
409   // if storage content is not specified use the content of storage_type if exist
410   if(!strcmp(storage->content,"") && strcmp(((storage_type_t) stype)->content,"")){
411     storage->content = ((storage_type_t) stype)->content;
412     XBT_DEBUG("For disk '%s' content is empty, use the content of storage type '%s'",storage->id,((storage_type_t) stype)->type_id);
413   }
414
415   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",
416       storage->id,
417       ((storage_type_t) stype)->model,
418       ((storage_type_t) stype)->type_id,
419       storage->content,
420       ((storage_type_t) stype)->properties);
421
422   storage_create_resource(storage->id,
423      ((storage_type_t) stype)->model,
424      ((storage_type_t) stype)->type_id,
425      storage->content);
426 }
427
428 static void parse_mstorage_init(sg_platf_mstorage_cbarg_t mstorage)
429 {
430   XBT_DEBUG("parse_mstorage_init");
431 }
432
433 static void parse_storage_type_init(sg_platf_storage_type_cbarg_t storagetype_)
434 {
435   XBT_DEBUG("parse_storage_type_init");
436 }
437
438 static void parse_mount_init(sg_platf_mount_cbarg_t mount)
439 {
440   XBT_DEBUG("parse_mount_init");
441 }
442
443 static void storage_define_callbacks()
444 {
445   sg_platf_storage_add_cb(parse_storage_init);
446   sg_platf_storage_type_add_cb(parse_storage_type_init);
447   sg_platf_mstorage_add_cb(parse_mstorage_init);
448   sg_platf_mount_add_cb(parse_mount_init);
449 }
450
451 static void surf_storage_model_init_internal(void)
452 {
453   s_surf_action_t action;
454
455   XBT_DEBUG("surf_storage_model_init_internal");
456   surf_storage_model = surf_model_init();
457
458   storage_running_action_set_that_does_not_need_being_checked =
459       xbt_swag_new(xbt_swag_offset(action, state_hookup));
460
461   surf_storage_model->name = "Storage";
462   surf_storage_model->action_unref = storage_action_unref;
463   surf_storage_model->action_cancel = storage_action_cancel;
464   surf_storage_model->action_state_set = storage_action_state_set;
465
466   surf_storage_model->model_private->finalize = storage_finalize;
467   surf_storage_model->model_private->update_actions_state = storage_update_actions_state;
468   surf_storage_model->model_private->share_resources = storage_share_resources;
469   surf_storage_model->model_private->resource_used = storage_resource_used;
470   surf_storage_model->model_private->update_resource_state = storage_resources_state;
471
472   surf_storage_model->suspend = storage_action_suspend;
473   surf_storage_model->resume = storage_action_resume;
474   surf_storage_model->is_suspended = storage_action_is_suspended;
475   surf_storage_model->set_max_duration = storage_action_set_max_duration;
476   surf_storage_model->set_priority = storage_action_set_priority;
477
478   surf_storage_model->extension.storage.open = storage_action_open;
479   surf_storage_model->extension.storage.close = storage_action_close;
480   surf_storage_model->extension.storage.read = storage_action_read;
481   surf_storage_model->extension.storage.write = storage_action_write;
482   surf_storage_model->extension.storage.ls = storage_action_ls;
483
484   if (!storage_maxmin_system) {
485     storage_maxmin_system = lmm_system_new(storage_selective_update);
486   }
487
488 }
489
490 void surf_storage_model_init_default(void)
491 {
492   surf_storage_model_init_internal();
493   storage_define_callbacks();
494
495   xbt_dynar_push(model_list, &surf_storage_model);
496 }
497
498 static void storage_parse_storage(sg_platf_storage_cbarg_t storage)
499 {
500   xbt_assert(!xbt_lib_get_or_null(storage_lib, storage->id,ROUTING_STORAGE_LEVEL),
501                "Reading a storage, processing unit \"%s\" already exists", storage->id);
502
503   // Verification of an existing type_id
504 #ifndef NDEBUG
505   void* storage_type = xbt_lib_get_or_null(storage_type_lib, storage->type_id,ROUTING_STORAGE_TYPE_LEVEL);
506 #endif
507   xbt_assert(storage_type,"Reading a storage, type id \"%s\" does not exists", storage->type_id);
508
509   XBT_DEBUG("ROUTING Create a storage name '%s' with type_id '%s' and content '%s'",
510       storage->id,
511       storage->type_id,
512       storage->content);
513
514   xbt_lib_set(storage_lib,
515       storage->id,
516       ROUTING_STORAGE_LEVEL,
517       (void *) xbt_strdup(storage->type_id));
518 }
519
520 static xbt_dict_t parse_storage_content(char *filename, unsigned long *used_size)
521 {
522   *used_size = 0;
523   if ((!filename) || (strcmp(filename, "") == 0))
524     return NULL;
525
526   xbt_dict_t parse_content = xbt_dict_new_homogeneous(NULL);
527   FILE *file = NULL;
528
529   file = surf_fopen(filename, "r");
530   xbt_assert(file != NULL, "Cannot open file '%s' (path=%s)", filename,
531               xbt_str_join(surf_path, ":"));
532
533   char *line = NULL;
534   size_t len = 0;
535   ssize_t read;
536   char path[1024];
537   unsigned long size;
538
539
540   while ((read = xbt_getline(&line, &len, file)) != -1) {
541     if (read){
542     if(sscanf(line,"%s %ld",path, &size)==2) {
543         *used_size += size;
544         xbt_dict_set(parse_content,path,(void*) size,NULL);
545       } else {
546         xbt_die("Be sure of passing a good format for content file.\n");
547       }
548     }
549   }
550   free(line);
551   fclose(file);
552   return parse_content;
553 }
554
555 static void storage_parse_storage_type(sg_platf_storage_type_cbarg_t storage_type)
556 {
557   xbt_assert(!xbt_lib_get_or_null(storage_type_lib, storage_type->id,ROUTING_STORAGE_TYPE_LEVEL),
558                "Reading a storage type, processing unit \"%s\" already exists", storage_type->id);
559
560   storage_type_t stype = xbt_new0(s_storage_type_t, 1);
561   stype->model = xbt_strdup(storage_type->model);
562   stype->properties = storage_type->properties;
563   stype->content = xbt_strdup(storage_type->content);
564   stype->type_id = xbt_strdup(storage_type->id);
565   stype->size = storage_type->size * 1000000000; /* storage_type->size is in Gbytes and stype->sizeis in bytes */
566
567   XBT_DEBUG("ROUTING Create a storage type id '%s' with model '%s' content '%s'",
568       stype->type_id,
569       stype->model,
570       storage_type->content);
571
572   xbt_lib_set(storage_type_lib,
573       stype->type_id,
574       ROUTING_STORAGE_TYPE_LEVEL,
575       (void *) stype);
576 }
577 static void storage_parse_mstorage(sg_platf_mstorage_cbarg_t mstorage)
578 {
579   THROW_UNIMPLEMENTED;
580 //  mount_t mnt = xbt_new0(s_mount_t, 1);
581 //  mnt->id = xbt_strdup(mstorage->type_id);
582 //  mnt->name = xbt_strdup(mstorage->name);
583 //
584 //  if(!mount_list){
585 //    XBT_DEBUG("Creata a Mount list for %s",A_surfxml_host_id);
586 //    mount_list = xbt_dynar_new(sizeof(char *), NULL);
587 //  }
588 //  xbt_dynar_push(mount_list,(void *) mnt);
589 //  free(mnt->id);
590 //  free(mnt->name);
591 //  xbt_free(mnt);
592 //  XBT_DEBUG("ROUTING Mount a storage name '%s' with type_id '%s'",mstorage->name, mstorage->id);
593 }
594
595 static void mount_free(void *p)
596 {
597   mount_t mnt = p;
598   xbt_free(mnt->name);
599 }
600
601 static void storage_parse_mount(sg_platf_mount_cbarg_t mount)
602 {
603   // Verification of an existing storage
604 #ifndef NDEBUG
605   void* storage = xbt_lib_get_or_null(storage_lib, mount->id,ROUTING_STORAGE_LEVEL);
606 #endif
607   xbt_assert(storage,"Disk id \"%s\" does not exists", mount->id);
608
609   XBT_DEBUG("ROUTING Mount '%s' on '%s'",mount->id, mount->name);
610
611   s_mount_t mnt;
612   mnt.id = surf_storage_resource_priv(surf_storage_resource_by_name(mount->id));
613   mnt.name = xbt_strdup(mount->name);
614
615   if(!mount_list){
616     XBT_DEBUG("Create a Mount list for %s",A_surfxml_host_id);
617     mount_list = xbt_dynar_new(sizeof(s_mount_t), mount_free);
618   }
619   xbt_dynar_push(mount_list,&mnt);
620 }
621
622 static XBT_INLINE void routing_storage_type_free(void *r)
623 {
624   storage_type_t stype = r;
625   free(stype->model);
626   free(stype->type_id);
627   free(stype->content);
628   xbt_dict_free(&(stype->properties));
629   free(stype);
630 }
631
632 static XBT_INLINE void surf_storage_resource_free(void *r)
633 {
634   // specific to storage
635   storage_t storage = r;
636   xbt_dict_free(&storage->content);
637   xbt_dynar_free(&storage->write_actions);
638   // generic resource
639   surf_resource_free(r);
640 }
641
642 static XBT_INLINE void routing_storage_host_free(void *r)
643 {
644   xbt_dynar_t dyn = r;
645   xbt_dynar_free(&dyn);
646 }
647
648 void storage_register_callbacks() {
649
650   ROUTING_STORAGE_LEVEL = xbt_lib_add_level(storage_lib,xbt_free);
651   ROUTING_STORAGE_HOST_LEVEL = xbt_lib_add_level(storage_lib,routing_storage_host_free);
652   ROUTING_STORAGE_TYPE_LEVEL = xbt_lib_add_level(storage_type_lib,routing_storage_type_free);
653   SURF_STORAGE_LEVEL = xbt_lib_add_level(storage_lib,surf_storage_resource_free);
654
655   sg_platf_storage_add_cb(storage_parse_storage);
656   sg_platf_mstorage_add_cb(storage_parse_mstorage);
657   sg_platf_storage_type_add_cb(storage_parse_storage_type);
658   sg_platf_mount_add_cb(storage_parse_mount);
659 }