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These "properties" are actually bandwidths: allow users to declare units
[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, size_t *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, size_t 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   size_t 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->mount = 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->mount);
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, size_t size,
127                                          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, size_t size, 
136                                           surf_file_t fd)
137 {
138   char *filename = fd->name;
139   XBT_DEBUG("\tWrite file '%s' size '%zu/%zu'",filename,size,fd->size);
140
141   surf_action_t action = storage_action_execute(storage,size,WRITE);
142   action->file = fd;
143
144   // If the storage is full
145   if(((storage_t)storage)->used_size==((storage_t)storage)->size) {
146     storage_action_state_set((surf_action_t) action, SURF_ACTION_FAILED);
147   }
148   return action;
149 }
150
151 static surf_action_t storage_action_execute (void *storage, size_t size, e_surf_action_storage_type_t type)
152 {
153   surf_action_storage_t action = NULL;
154   storage_t STORAGE = storage;
155
156   XBT_IN("(%s,%zu", surf_resource_name(STORAGE), size);
157   action =
158       surf_action_new(sizeof(s_surf_action_storage_t), size, surf_storage_model,
159           STORAGE->state_current != SURF_RESOURCE_ON);
160
161   // Save the storage on action
162   action->storage = storage;
163   GENERIC_LMM_ACTION(action).suspended = 0;     /* Should be useless because of the
164                                                    calloc but it seems to help valgrind... */
165
166   GENERIC_LMM_ACTION(action).variable =
167       lmm_variable_new(storage_maxmin_system, action, 1.0, -1.0 , 3);
168
169   // Must be less than the max bandwidth for all actions
170   lmm_expand(storage_maxmin_system, STORAGE->constraint,
171              GENERIC_LMM_ACTION(action).variable, 1.0);
172
173   switch(type) {
174   case OPEN:
175   case CLOSE:
176   case STAT:
177   case LS:
178     break;
179   case READ:
180     lmm_expand(storage_maxmin_system, STORAGE->constraint_read,
181                GENERIC_LMM_ACTION(action).variable, 1.0);
182     break;
183   case WRITE:
184     lmm_expand(storage_maxmin_system, STORAGE->constraint_write,
185                GENERIC_LMM_ACTION(action).variable, 1.0);
186     xbt_dynar_push(((storage_t)storage)->write_actions,&action);
187     surf_action_ref((surf_action_t) action);
188     break;
189   }
190   action->type = type;
191   XBT_OUT();
192   return (surf_action_t) action;
193 }
194
195 static void* storage_create_resource(const char* id, const char* model,const char* type_id,const char* content_name)
196 {
197   storage_t storage = NULL;
198
199   xbt_assert(!surf_storage_resource_priv(surf_storage_resource_by_name(id)),
200               "Storage '%s' declared several times in the platform file",
201               id);
202   storage = (storage_t) surf_resource_new(sizeof(s_storage_t),
203           surf_storage_model, id,NULL);
204
205   storage->state_current = SURF_RESOURCE_ON;
206   storage->used_size = 0;
207   storage->size = 0;
208   storage->write_actions = xbt_dynar_new(sizeof(char *),NULL);
209
210   storage_type_t storage_type = xbt_lib_get_or_null(storage_type_lib, type_id,ROUTING_STORAGE_TYPE_LEVEL);
211   double Bread =
212       surf_parse_get_bandwidth(xbt_dict_get(storage_type->properties,"Bread"));
213   double Bwrite =
214       surf_parse_get_bandwidth(xbt_dict_get(storage_type->properties,"Bwrite"));
215   double Bconnection =
216       surf_parse_get_bandwidth(xbt_dict_get(storage_type->properties,
217                                             "Bconnection"));
218   XBT_DEBUG("Create resource with Bconnection '%f' Bread '%f' Bwrite '%f' and Size '%lu'",Bconnection,Bread,Bwrite,(unsigned long)storage_type->size);
219   storage->constraint       = lmm_constraint_new(storage_maxmin_system, storage, Bconnection);
220   storage->constraint_read  = lmm_constraint_new(storage_maxmin_system, storage, Bread);
221   storage->constraint_write = lmm_constraint_new(storage_maxmin_system, storage, Bwrite);
222   storage->content = parse_storage_content((char*)content_name,&(storage->used_size));
223   storage->size = storage_type->size;
224
225   xbt_lib_set(storage_lib, id, SURF_STORAGE_LEVEL, storage);
226
227   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",
228       id,
229       model,
230       type_id,
231       storage_type->properties,
232       Bread);
233
234   if(!storage_list) storage_list=xbt_dynar_new(sizeof(char *),NULL);
235   xbt_dynar_push(storage_list,&storage);
236
237   return storage;
238 }
239
240 static void storage_finalize(void)
241 {
242   lmm_system_free(storage_maxmin_system);
243   storage_maxmin_system = NULL;
244
245   surf_model_exit(surf_storage_model);
246   surf_storage_model = NULL;
247
248   xbt_dynar_free(&storage_list);
249
250   xbt_swag_free
251       (storage_running_action_set_that_does_not_need_being_checked);
252   storage_running_action_set_that_does_not_need_being_checked = NULL;
253 }
254
255 static void storage_update_actions_state(double now, double delta)
256 {
257   surf_action_storage_t action = NULL;
258   surf_action_storage_t next_action = NULL;
259   xbt_swag_t running_actions = surf_storage_model->states.running_action_set;
260
261   // Update the disk usage
262   // Update the file size
263   // For each action of type write
264   xbt_swag_foreach_safe(action, next_action, running_actions) {
265     if(action->type == WRITE)
266     {
267       double rate = lmm_variable_getvalue(GENERIC_LMM_ACTION(action).variable);
268       /* Hack to avoid rounding differences between x86 and x86_64
269        * (note that the next sizes are of type size_t). */
270       long incr = delta * rate + MAXMIN_PRECISION;
271       ((storage_t)(action->storage))->used_size += incr; // disk usage
272       ((surf_action_t)action)->file->size += incr; // file size
273     }
274   }
275
276   xbt_swag_foreach_safe(action, next_action, running_actions) {
277
278     double_update(&(GENERIC_ACTION(action).remains),
279                   lmm_variable_getvalue(GENERIC_LMM_ACTION(action).variable) * delta);
280
281     if (GENERIC_LMM_ACTION(action).generic_action.max_duration != NO_MAX_DURATION)
282       double_update(&(GENERIC_ACTION(action).max_duration), delta);
283
284     if(GENERIC_ACTION(action).remains > 0 &&
285         lmm_get_variable_weight(GENERIC_LMM_ACTION(action).variable) > 0 &&
286         ((storage_t)action->storage)->used_size == ((storage_t)action->storage)->size)
287     {
288       GENERIC_ACTION(action).finish = surf_get_clock();
289       storage_action_state_set((surf_action_t) action, SURF_ACTION_FAILED);
290     } else if ((GENERIC_ACTION(action).remains <= 0) &&
291         (lmm_get_variable_weight(GENERIC_LMM_ACTION(action).variable) > 0))
292     {
293       GENERIC_ACTION(action).finish = surf_get_clock();
294       storage_action_state_set((surf_action_t) action, SURF_ACTION_DONE);
295     } else if ((GENERIC_ACTION(action).max_duration != NO_MAX_DURATION) &&
296                (GENERIC_ACTION(action).max_duration <= 0))
297     {
298       GENERIC_ACTION(action).finish = surf_get_clock();
299       storage_action_state_set((surf_action_t) action, SURF_ACTION_DONE);
300     }
301   }
302
303   return;
304 }
305
306 static double storage_share_resources(double NOW)
307 {
308   XBT_DEBUG("storage_share_resources %f",NOW);
309   s_surf_action_storage_t action;
310   unsigned int i,j;
311   storage_t storage;
312   surf_action_storage_t write_action;
313
314   double min_completion = generic_maxmin_share_resources(surf_storage_model->states.running_action_set,
315       xbt_swag_offset(action, generic_lmm_action.variable),
316       storage_maxmin_system, lmm_solve);
317
318   double rate;
319   // Foreach disk
320   xbt_dynar_foreach(storage_list,i,storage)
321   {
322     rate = 0;
323     // Foreach write action on disk
324     xbt_dynar_foreach(storage->write_actions,j,write_action)
325     {
326       rate += lmm_variable_getvalue(write_action->generic_lmm_action.variable);
327     }
328     if(rate > 0)
329       min_completion = MIN(min_completion, (storage->size-storage->used_size)/rate);
330   }
331
332   return min_completion;
333 }
334
335 static int storage_resource_used(void *resource_id)
336 {
337   THROW_UNIMPLEMENTED;
338   return 0;
339 }
340
341 static void storage_resources_state(void *id, tmgr_trace_event_t event_type,
342                                  double value, double time)
343 {
344   THROW_UNIMPLEMENTED;
345 }
346
347 static int storage_action_unref(surf_action_t action)
348 {
349   action->refcount--;
350   if (!action->refcount) {
351     xbt_swag_remove(action, action->state_set);
352     if (((surf_action_lmm_t) action)->variable)
353       lmm_variable_free(storage_maxmin_system,
354                         ((surf_action_lmm_t) action)->variable);
355 #ifdef HAVE_TRACING
356     xbt_free(action->category);
357 #endif
358     surf_action_free(&action);
359     return 1;
360   }
361   return 0;
362 }
363
364 static void storage_action_cancel(surf_action_t action)
365 {
366   surf_action_state_set(action, SURF_ACTION_FAILED);
367   return;
368 }
369
370 static void storage_action_state_set(surf_action_t action, e_surf_action_state_t state)
371 {
372   surf_action_state_set(action, state);
373   return;
374 }
375
376 static void storage_action_suspend(surf_action_t action)
377 {
378   XBT_IN("(%p)", action);
379   if (((surf_action_lmm_t) action)->suspended != 2) {
380     lmm_update_variable_weight(storage_maxmin_system,
381                                ((surf_action_lmm_t) action)->variable,
382                                0.0);
383     ((surf_action_lmm_t) action)->suspended = 1;
384   }
385   XBT_OUT();
386 }
387
388 static void storage_action_resume(surf_action_t action)
389 {
390   THROW_UNIMPLEMENTED;
391 }
392
393 static int storage_action_is_suspended(surf_action_t action)
394 {
395   return (((surf_action_lmm_t) action)->suspended == 1);
396 }
397
398 static void storage_action_set_max_duration(surf_action_t action, double duration)
399 {
400   THROW_UNIMPLEMENTED;
401 }
402
403 static void storage_action_set_priority(surf_action_t action, double priority)
404 {
405   THROW_UNIMPLEMENTED;
406 }
407
408 static void parse_storage_init(sg_platf_storage_cbarg_t storage)
409 {
410   void* stype = xbt_lib_get_or_null(storage_type_lib,
411                                     storage->type_id,
412                                     ROUTING_STORAGE_TYPE_LEVEL);
413   if(!stype) xbt_die("No storage type '%s'",storage->type_id);
414
415   // if storage content is not specified use the content of storage_type if exist
416   if(!strcmp(storage->content,"") && strcmp(((storage_type_t) stype)->content,"")){
417     storage->content = ((storage_type_t) stype)->content;
418     XBT_DEBUG("For disk '%s' content is empty, use the content of storage type '%s'",storage->id,((storage_type_t) stype)->type_id);
419   }
420
421   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",
422       storage->id,
423       ((storage_type_t) stype)->model,
424       ((storage_type_t) stype)->type_id,
425       storage->content,
426       ((storage_type_t) stype)->properties);
427
428   storage_create_resource(storage->id,
429      ((storage_type_t) stype)->model,
430      ((storage_type_t) stype)->type_id,
431      storage->content);
432 }
433
434 static void parse_mstorage_init(sg_platf_mstorage_cbarg_t mstorage)
435 {
436   XBT_DEBUG("parse_mstorage_init");
437 }
438
439 static void parse_storage_type_init(sg_platf_storage_type_cbarg_t storagetype_)
440 {
441   XBT_DEBUG("parse_storage_type_init");
442 }
443
444 static void parse_mount_init(sg_platf_mount_cbarg_t mount)
445 {
446   XBT_DEBUG("parse_mount_init");
447 }
448
449 static void storage_define_callbacks()
450 {
451   sg_platf_storage_add_cb(parse_storage_init);
452   sg_platf_storage_type_add_cb(parse_storage_type_init);
453   sg_platf_mstorage_add_cb(parse_mstorage_init);
454   sg_platf_mount_add_cb(parse_mount_init);
455 }
456
457 static void surf_storage_model_init_internal(void)
458 {
459   s_surf_action_t action;
460
461   XBT_DEBUG("surf_storage_model_init_internal");
462   surf_storage_model = surf_model_init();
463
464   storage_running_action_set_that_does_not_need_being_checked =
465       xbt_swag_new(xbt_swag_offset(action, state_hookup));
466
467   surf_storage_model->name = "Storage";
468   surf_storage_model->action_unref = storage_action_unref;
469   surf_storage_model->action_cancel = storage_action_cancel;
470   surf_storage_model->action_state_set = storage_action_state_set;
471
472   surf_storage_model->model_private->finalize = storage_finalize;
473   surf_storage_model->model_private->update_actions_state = storage_update_actions_state;
474   surf_storage_model->model_private->share_resources = storage_share_resources;
475   surf_storage_model->model_private->resource_used = storage_resource_used;
476   surf_storage_model->model_private->update_resource_state = storage_resources_state;
477
478   surf_storage_model->suspend = storage_action_suspend;
479   surf_storage_model->resume = storage_action_resume;
480   surf_storage_model->is_suspended = storage_action_is_suspended;
481   surf_storage_model->set_max_duration = storage_action_set_max_duration;
482   surf_storage_model->set_priority = storage_action_set_priority;
483
484   surf_storage_model->extension.storage.open = storage_action_open;
485   surf_storage_model->extension.storage.close = storage_action_close;
486   surf_storage_model->extension.storage.read = storage_action_read;
487   surf_storage_model->extension.storage.write = storage_action_write;
488   surf_storage_model->extension.storage.ls = storage_action_ls;
489
490   if (!storage_maxmin_system) {
491     storage_maxmin_system = lmm_system_new(storage_selective_update);
492   }
493
494 }
495
496 void surf_storage_model_init_default(void)
497 {
498   surf_storage_model_init_internal();
499   storage_define_callbacks();
500
501   xbt_dynar_push(model_list, &surf_storage_model);
502 }
503
504 static void storage_parse_storage(sg_platf_storage_cbarg_t storage)
505 {
506   xbt_assert(!xbt_lib_get_or_null(storage_lib, storage->id,ROUTING_STORAGE_LEVEL),
507                "Reading a storage, processing unit \"%s\" already exists", storage->id);
508
509   // Verification of an existing type_id
510 #ifndef NDEBUG
511   void* storage_type = xbt_lib_get_or_null(storage_type_lib, storage->type_id,ROUTING_STORAGE_TYPE_LEVEL);
512 #endif
513   xbt_assert(storage_type,"Reading a storage, type id \"%s\" does not exists", storage->type_id);
514
515   XBT_DEBUG("ROUTING Create a storage name '%s' with type_id '%s' and content '%s'",
516       storage->id,
517       storage->type_id,
518       storage->content);
519
520   xbt_lib_set(storage_lib,
521       storage->id,
522       ROUTING_STORAGE_LEVEL,
523       (void *) xbt_strdup(storage->type_id));
524 }
525
526 static xbt_dict_t parse_storage_content(char *filename, size_t *used_size)
527 {
528   *used_size = 0;
529   if ((!filename) || (strcmp(filename, "") == 0))
530     return NULL;
531
532   xbt_dict_t parse_content = xbt_dict_new_homogeneous(NULL);
533   FILE *file = NULL;
534
535   file = surf_fopen(filename, "r");
536   xbt_assert(file != NULL, "Cannot open file '%s' (path=%s)", filename,
537               xbt_str_join(surf_path, ":"));
538
539   char *line = NULL;
540   size_t len = 0;
541   ssize_t read;
542   char path[1024];
543   size_t size;
544
545
546   while ((read = xbt_getline(&line, &len, file)) != -1) {
547     if (read){
548     if(sscanf(line,"%s %zu",path, &size)==2) {
549         *used_size += size;
550         xbt_dict_set(parse_content,path,(void*) size,NULL);
551       } else {
552         xbt_die("Be sure of passing a good format for content file.\n");
553       }
554     }
555   }
556   free(line);
557   fclose(file);
558   return parse_content;
559 }
560
561 static void storage_parse_storage_type(sg_platf_storage_type_cbarg_t storage_type)
562 {
563   xbt_assert(!xbt_lib_get_or_null(storage_type_lib, storage_type->id,ROUTING_STORAGE_TYPE_LEVEL),
564                "Reading a storage type, processing unit \"%s\" already exists", storage_type->id);
565
566   storage_type_t stype = xbt_new0(s_storage_type_t, 1);
567   stype->model = xbt_strdup(storage_type->model);
568   stype->properties = storage_type->properties;
569   stype->content = xbt_strdup(storage_type->content);
570   stype->type_id = xbt_strdup(storage_type->id);
571   stype->size = storage_type->size;
572
573   XBT_DEBUG("ROUTING Create a storage type id '%s' with model '%s' content '%s'",
574       stype->type_id,
575       stype->model,
576       storage_type->content);
577
578   xbt_lib_set(storage_type_lib,
579       stype->type_id,
580       ROUTING_STORAGE_TYPE_LEVEL,
581       (void *) stype);
582 }
583 static void storage_parse_mstorage(sg_platf_mstorage_cbarg_t mstorage)
584 {
585   THROW_UNIMPLEMENTED;
586 //  mount_t mnt = xbt_new0(s_mount_t, 1);
587 //  mnt->id = xbt_strdup(mstorage->type_id);
588 //  mnt->name = xbt_strdup(mstorage->name);
589 //
590 //  if(!mount_list){
591 //    XBT_DEBUG("Creata a Mount list for %s",A_surfxml_host_id);
592 //    mount_list = xbt_dynar_new(sizeof(char *), NULL);
593 //  }
594 //  xbt_dynar_push(mount_list,(void *) mnt);
595 //  free(mnt->id);
596 //  free(mnt->name);
597 //  xbt_free(mnt);
598 //  XBT_DEBUG("ROUTING Mount a storage name '%s' with type_id '%s'",mstorage->name, mstorage->id);
599 }
600
601 static void mount_free(void *p)
602 {
603   mount_t mnt = p;
604   xbt_free(mnt->name);
605 }
606
607 static void storage_parse_mount(sg_platf_mount_cbarg_t mount)
608 {
609   // Verification of an existing storage
610 #ifndef NDEBUG
611   void* storage = xbt_lib_get_or_null(storage_lib, mount->id,ROUTING_STORAGE_LEVEL);
612 #endif
613   xbt_assert(storage,"Disk id \"%s\" does not exists", mount->id);
614
615   XBT_DEBUG("ROUTING Mount '%s' on '%s'",mount->id, mount->name);
616
617   s_mount_t mnt;
618   mnt.id = surf_storage_resource_priv(surf_storage_resource_by_name(mount->id));
619   mnt.name = xbt_strdup(mount->name);
620
621   if(!mount_list){
622     XBT_DEBUG("Create a Mount list for %s",A_surfxml_host_id);
623     mount_list = xbt_dynar_new(sizeof(s_mount_t), mount_free);
624   }
625   xbt_dynar_push(mount_list,&mnt);
626 }
627
628 static XBT_INLINE void routing_storage_type_free(void *r)
629 {
630   storage_type_t stype = r;
631   free(stype->model);
632   free(stype->type_id);
633   free(stype->content);
634   xbt_dict_free(&(stype->properties));
635   free(stype);
636 }
637
638 static XBT_INLINE void surf_storage_resource_free(void *r)
639 {
640   // specific to storage
641   storage_t storage = r;
642   xbt_dict_free(&storage->content);
643   xbt_dynar_free(&storage->write_actions);
644   // generic resource
645   surf_resource_free(r);
646 }
647
648 static XBT_INLINE void routing_storage_host_free(void *r)
649 {
650   xbt_dynar_t dyn = r;
651   xbt_dynar_free(&dyn);
652 }
653
654 void storage_register_callbacks() {
655
656   ROUTING_STORAGE_LEVEL = xbt_lib_add_level(storage_lib,xbt_free);
657   ROUTING_STORAGE_HOST_LEVEL = xbt_lib_add_level(storage_lib,routing_storage_host_free);
658   ROUTING_STORAGE_TYPE_LEVEL = xbt_lib_add_level(storage_type_lib,routing_storage_type_free);
659   SURF_STORAGE_LEVEL = xbt_lib_add_level(storage_lib,surf_storage_resource_free);
660
661   sg_platf_storage_add_cb(storage_parse_storage);
662   sg_platf_mstorage_add_cb(storage_parse_mstorage);
663   sg_platf_storage_type_add_cb(storage_parse_storage_type);
664   sg_platf_mount_add_cb(storage_parse_mount);
665 }