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Fix memory leak
[simgrid.git] / 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 static xbt_dynar_t storage_list;
34
35 #define GENERIC_LMM_ACTION(action) action->generic_lmm_action
36 #define GENERIC_ACTION(action) GENERIC_LMM_ACTION(action).generic_action
37
38 static xbt_dict_t parse_storage_content(char *filename, unsigned long *used_size);
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_stat(void *storage, surf_file_t stream)
43 {
44   surf_action_t action = storage_action_execute(storage,0, STAT);
45   action->file = stream;
46   action->stat = stream->content->stat;
47   return action;
48 }
49
50 static surf_action_t storage_action_open(void *storage, const char* mount, const char* path, const char* mode)
51 {
52   XBT_DEBUG("\tOpen file '%s'",path);
53   xbt_dict_t content_dict = ((storage_t)storage)->content;
54   surf_stat_t content = xbt_dict_get_or_null(content_dict,path);
55
56   // if file does not exist create an empty file
57   if(!content){
58     content = xbt_new0(s_surf_stat_t,1);
59     content->stat.date = xbt_strdup("");
60     content->stat.group = xbt_strdup("");
61     content->stat.size = 0;
62     content->stat.time = xbt_strdup("");
63     content->stat.user = xbt_strdup("");
64     content->stat.user_rights = xbt_strdup("");
65     xbt_dict_set(content_dict,path,content,NULL);
66     XBT_DEBUG("File '%s' was not found, file created.",path);
67   }
68   surf_file_t file = xbt_new0(s_surf_file_t,1);
69   file->name = xbt_strdup(path);
70   file->content = content;
71   file->storage = mount;
72
73   surf_action_t action = storage_action_execute(storage,0, OPEN);
74   action->file = (void *)file;
75   return action;
76 }
77
78 static surf_action_t storage_action_close(void *storage, surf_file_t fp)
79 {
80   char *filename = fp->name;
81   XBT_DEBUG("\tClose file '%s' size '%f'",filename,fp->content->stat.size);
82   free(fp->name);
83   fp->content = NULL;
84   xbt_free(fp);
85   surf_action_t action = storage_action_execute(storage,0, CLOSE);
86   return action;
87 }
88
89 static surf_action_t storage_action_read(void *storage, void* ptr, double size, size_t nmemb, surf_file_t stream)
90 {
91   surf_stat_t content = stream->content;
92   if(size > content->stat.size)
93     size = content->stat.size;
94   surf_action_t action = storage_action_execute(storage,size,READ);
95   return action;
96 }
97
98 static surf_action_t storage_action_write(void *storage, const void* ptr, size_t size, size_t nmemb, surf_file_t stream)
99 {
100   char *filename = stream->name;
101   surf_stat_t content = stream->content;
102   XBT_DEBUG("\tWrite file '%s' size '%zu/%f'",filename,size,content->stat.size);
103
104   surf_action_t action = storage_action_execute(storage,size,WRITE);
105   action->file = stream;
106
107   // If the storage is full
108   if(((storage_t)storage)->used_size==((storage_t)storage)->size) {
109     storage_action_state_set((surf_action_t) action, SURF_ACTION_FAILED);
110   }
111   return action;
112 }
113
114 static surf_action_t storage_action_execute (void *storage, double size, e_surf_action_storage_type_t type)
115 {
116   surf_action_storage_t action = NULL;
117   storage_t STORAGE = storage;
118
119   XBT_IN("(%s,%f)", surf_resource_name(STORAGE), size);
120   action =
121       surf_action_new(sizeof(s_surf_action_storage_t), size, surf_storage_model,
122           STORAGE->state_current != SURF_RESOURCE_ON);
123
124   // Save the storage on action
125   action->storage = storage;
126   GENERIC_LMM_ACTION(action).suspended = 0;     /* Should be useless because of the
127                                                    calloc but it seems to help valgrind... */
128
129   GENERIC_LMM_ACTION(action).variable =
130       lmm_variable_new(storage_maxmin_system, action, 1.0, -1.0 , 3);
131
132   // Must be less than the max bandwidth for all actions
133   lmm_expand(storage_maxmin_system, STORAGE->constraint,
134              GENERIC_LMM_ACTION(action).variable, 1.0);
135
136   switch(type) {
137   case OPEN:
138   case CLOSE:
139   case STAT:
140     break;
141   case READ:
142     lmm_expand(storage_maxmin_system, STORAGE->constraint_read,
143                GENERIC_LMM_ACTION(action).variable, 1.0);
144     break;
145   case WRITE:
146     lmm_expand(storage_maxmin_system, STORAGE->constraint_write,
147                GENERIC_LMM_ACTION(action).variable, 1.0);
148     xbt_dynar_push(((storage_t)storage)->write_actions,&action);
149
150     break;
151   }
152   action->type = type;
153   XBT_OUT();
154   return (surf_action_t) action;
155 }
156
157 static void* storage_create_resource(const char* id, const char* model,const char* type_id,const char* content_name)
158 {
159   storage_t storage = NULL;
160
161   xbt_assert(!surf_storage_resource_by_name(id),
162               "Storage '%s' declared several times in the platform file",
163               id);
164   storage = (storage_t) surf_resource_new(sizeof(s_storage_t),
165           surf_storage_model, id,NULL);
166
167   storage->state_current = SURF_RESOURCE_ON;
168   storage->used_size = 0;
169   storage->size = 0;
170   storage->write_actions = xbt_dynar_new(sizeof(char *),NULL);
171
172   storage_type_t storage_type = xbt_lib_get_or_null(storage_type_lib, type_id,ROUTING_STORAGE_TYPE_LEVEL);
173   double Bread  = atof(xbt_dict_get(storage_type->properties,"Bread"));
174   double Bwrite = atof(xbt_dict_get(storage_type->properties,"Bwrite"));
175   double Bconnection   = atof(xbt_dict_get(storage_type->properties,"Bconnection"));
176   XBT_DEBUG("Create resource with Bconnection '%f' Bread '%f' Bwrite '%f' and Size '%ld'",Bconnection,Bread,Bwrite,storage_type->size);
177   storage->constraint       = lmm_constraint_new(storage_maxmin_system, storage, Bconnection);
178   storage->constraint_read  = lmm_constraint_new(storage_maxmin_system, storage, Bread);
179   storage->constraint_write = lmm_constraint_new(storage_maxmin_system, storage, Bwrite);
180   storage->content = parse_storage_content((char*)content_name,&(storage->used_size));
181   storage->size = storage_type->size;
182
183   xbt_lib_set(storage_lib, id, SURF_STORAGE_LEVEL, storage);
184
185   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",
186       id,
187       model,
188       type_id,
189       storage_type->properties,
190       Bread);
191
192   if(!storage_list) storage_list=xbt_dynar_new(sizeof(char *),NULL);
193   xbt_dynar_push(storage_list,&storage);
194
195   return storage;
196 }
197
198 static void storage_finalize(void)
199 {
200   lmm_system_free(storage_maxmin_system);
201   storage_maxmin_system = NULL;
202
203   surf_model_exit(surf_storage_model);
204   surf_storage_model = NULL;
205
206   if(storage_list)
207     xbt_dynar_free(&storage_list);
208
209   xbt_swag_free
210       (storage_running_action_set_that_does_not_need_being_checked);
211   storage_running_action_set_that_does_not_need_being_checked = NULL;
212 }
213
214 static void storage_update_actions_state(double now, double delta)
215 {
216   surf_action_storage_t action = NULL;
217   surf_action_storage_t next_action = NULL;
218   xbt_swag_t running_actions = surf_storage_model->states.running_action_set;
219
220   // Update the disk usage
221   // Update the file size
222   // Foreach action of type write
223   xbt_swag_foreach_safe(action, next_action, running_actions) {
224     if(action->type == WRITE)
225     {
226       double rate = lmm_variable_getvalue(GENERIC_LMM_ACTION(action).variable);
227       ((storage_t)(action->storage))->used_size += delta * rate; // disk usage
228       ((surf_action_t)action)->file->content->stat.size += delta * rate; // file size
229     }
230   }
231
232   xbt_swag_foreach_safe(action, next_action, running_actions) {
233
234     double_update(&(GENERIC_ACTION(action).remains),
235                   lmm_variable_getvalue(GENERIC_LMM_ACTION(action).variable) * delta);
236
237     if (GENERIC_LMM_ACTION(action).generic_action.max_duration != NO_MAX_DURATION)
238       double_update(&(GENERIC_ACTION(action).max_duration), delta);
239
240     if(GENERIC_ACTION(action).remains > 0 &&
241         lmm_get_variable_weight(GENERIC_LMM_ACTION(action).variable) > 0 &&
242         ((storage_t)action->storage)->used_size == ((storage_t)action->storage)->size)
243     {
244       GENERIC_ACTION(action).finish = surf_get_clock();
245       storage_action_state_set((surf_action_t) action, SURF_ACTION_FAILED);
246     } else if ((GENERIC_ACTION(action).remains <= 0) &&
247         (lmm_get_variable_weight(GENERIC_LMM_ACTION(action).variable) > 0))
248     {
249       GENERIC_ACTION(action).finish = surf_get_clock();
250       storage_action_state_set((surf_action_t) action, SURF_ACTION_DONE);
251     } else if ((GENERIC_ACTION(action).max_duration != NO_MAX_DURATION) &&
252                (GENERIC_ACTION(action).max_duration <= 0))
253     {
254       GENERIC_ACTION(action).finish = surf_get_clock();
255       storage_action_state_set((surf_action_t) action, SURF_ACTION_DONE);
256     }
257   }
258
259   return;
260 }
261
262 static double storage_share_resources(double NOW)
263 {
264   XBT_DEBUG("storage_share_resources %f",NOW);
265   s_surf_action_storage_t action;
266   unsigned int i,j;
267   storage_t storage;
268   surf_action_storage_t write_action;
269
270   double min_completion = generic_maxmin_share_resources(surf_storage_model->states.running_action_set,
271       xbt_swag_offset(action, generic_lmm_action.variable),
272       storage_maxmin_system, lmm_solve);
273
274   double rate;
275   // Foreach disk
276   xbt_dynar_foreach(storage_list,i,storage)
277   {
278     rate = 0;
279     // Foreach write action on disk
280     xbt_dynar_foreach(storage->write_actions,j,write_action)
281     {
282       rate += lmm_variable_getvalue(write_action->generic_lmm_action.variable);
283     }
284     if(rate > 0)
285       min_completion = MIN(min_completion, (storage->size-storage->used_size)/rate);
286   }
287
288   return min_completion;
289 }
290
291 static int storage_resource_used(void *resource_id)
292 {
293   THROW_UNIMPLEMENTED;
294   return 0;
295 }
296
297 static void storage_resources_state(void *id, tmgr_trace_event_t event_type,
298                                  double value, double time)
299 {
300   THROW_UNIMPLEMENTED;
301 }
302
303 static int storage_action_unref(surf_action_t action)
304 {
305   action->refcount--;
306   if (!action->refcount) {
307     xbt_swag_remove(action, action->state_set);
308     if (((surf_action_lmm_t) action)->variable)
309       lmm_variable_free(storage_maxmin_system,
310                         ((surf_action_lmm_t) action)->variable);
311 #ifdef HAVE_TRACING
312     xbt_free(action->category);
313 #endif
314     surf_action_free(&action);
315     return 1;
316   }
317   return 0;
318 }
319
320 static void storage_action_cancel(surf_action_t action)
321 {
322   surf_action_state_set(action, SURF_ACTION_FAILED);
323   return;
324 }
325
326 static void storage_action_state_set(surf_action_t action, e_surf_action_state_t state)
327 {
328   surf_action_state_set(action, state);
329   return;
330 }
331
332 static void storage_action_suspend(surf_action_t action)
333 {
334   XBT_IN("(%p)", action);
335   if (((surf_action_lmm_t) action)->suspended != 2) {
336     lmm_update_variable_weight(storage_maxmin_system,
337                                ((surf_action_lmm_t) action)->variable,
338                                0.0);
339     ((surf_action_lmm_t) action)->suspended = 1;
340   }
341   XBT_OUT();
342 }
343
344 static void storage_action_resume(surf_action_t action)
345 {
346   THROW_UNIMPLEMENTED;
347 }
348
349 static int storage_action_is_suspended(surf_action_t action)
350 {
351   return (((surf_action_lmm_t) action)->suspended == 1);
352 }
353
354 static void storage_action_set_max_duration(surf_action_t action, double duration)
355 {
356   THROW_UNIMPLEMENTED;
357 }
358
359 static void storage_action_set_priority(surf_action_t action, double priority)
360 {
361   THROW_UNIMPLEMENTED;
362 }
363
364 static void parse_storage_init(sg_platf_storage_cbarg_t storage)
365 {
366   void* stype = xbt_lib_get_or_null(storage_type_lib,
367                                     storage->type_id,
368                                     ROUTING_STORAGE_TYPE_LEVEL);
369   if(!stype) xbt_die("No storage type '%s'",storage->type_id);
370
371   // if storage content is not specified use the content of storage_type if exist
372   if(!strcmp(storage->content,"") && strcmp(((storage_type_t) stype)->content,"")){
373     storage->content = ((storage_type_t) stype)->content;
374     XBT_DEBUG("For disk '%s' content is empty, use the content of storage type '%s'",storage->id,((storage_type_t) stype)->type_id);
375   }
376
377   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",
378       storage->id,
379       ((storage_type_t) stype)->model,
380       ((storage_type_t) stype)->type_id,
381       storage->content,
382       ((storage_type_t) stype)->properties);
383
384   storage_create_resource(storage->id,
385      ((storage_type_t) stype)->model,
386      ((storage_type_t) stype)->type_id,
387      storage->content);
388 }
389
390 static void parse_mstorage_init(sg_platf_mstorage_cbarg_t mstorage)
391 {
392   XBT_DEBUG("parse_mstorage_init");
393 }
394
395 static void parse_storage_type_init(sg_platf_storage_type_cbarg_t storagetype_)
396 {
397   XBT_DEBUG("parse_storage_type_init");
398 }
399
400 static void parse_mount_init(sg_platf_mount_cbarg_t mount)
401 {
402   XBT_DEBUG("parse_mount_init");
403 }
404
405 static void storage_define_callbacks()
406 {
407   sg_platf_storage_add_cb(parse_storage_init);
408   sg_platf_storage_type_add_cb(parse_storage_type_init);
409   sg_platf_mstorage_add_cb(parse_mstorage_init);
410   sg_platf_mount_add_cb(parse_mount_init);
411 }
412
413 static void surf_storage_model_init_internal(void)
414 {
415   s_surf_action_t action;
416
417   XBT_DEBUG("surf_storage_model_init_internal");
418   surf_storage_model = surf_model_init();
419
420   storage_running_action_set_that_does_not_need_being_checked =
421       xbt_swag_new(xbt_swag_offset(action, state_hookup));
422
423   surf_storage_model->name = "Storage";
424   surf_storage_model->action_unref = storage_action_unref;
425   surf_storage_model->action_cancel = storage_action_cancel;
426   surf_storage_model->action_state_set = storage_action_state_set;
427
428   surf_storage_model->model_private->finalize = storage_finalize;
429   surf_storage_model->model_private->update_actions_state = storage_update_actions_state;
430   surf_storage_model->model_private->share_resources = storage_share_resources;
431   surf_storage_model->model_private->resource_used = storage_resource_used;
432   surf_storage_model->model_private->update_resource_state = storage_resources_state;
433
434   surf_storage_model->suspend = storage_action_suspend;
435   surf_storage_model->resume = storage_action_resume;
436   surf_storage_model->is_suspended = storage_action_is_suspended;
437   surf_storage_model->set_max_duration = storage_action_set_max_duration;
438   surf_storage_model->set_priority = storage_action_set_priority;
439
440   surf_storage_model->extension.storage.open = storage_action_open;
441   surf_storage_model->extension.storage.close = storage_action_close;
442   surf_storage_model->extension.storage.read = storage_action_read;
443   surf_storage_model->extension.storage.write = storage_action_write;
444   surf_storage_model->extension.storage.stat = storage_action_stat;
445   surf_storage_model->extension.storage.create_resource = storage_create_resource;
446
447   if (!storage_maxmin_system) {
448     storage_maxmin_system = lmm_system_new(storage_selective_update);
449   }
450
451 }
452
453 void surf_storage_model_init_default(void)
454 {
455   surf_storage_model_init_internal();
456   storage_define_callbacks();
457
458   xbt_dynar_push(model_list, &surf_storage_model);
459 }
460
461 static void storage_parse_storage(sg_platf_storage_cbarg_t storage)
462 {
463   xbt_assert(!xbt_lib_get_or_null(storage_lib, storage->id,ROUTING_STORAGE_LEVEL),
464                "Reading a storage, processing unit \"%s\" already exists", storage->id);
465
466   // Verification of an existing type_id
467 #ifndef NDEBUG
468   void* storage_type = xbt_lib_get_or_null(storage_type_lib, storage->type_id,ROUTING_STORAGE_TYPE_LEVEL);
469 #endif
470   xbt_assert(storage_type,"Reading a storage, type id \"%s\" does not exists", storage->type_id);
471
472   XBT_DEBUG("ROUTING Create a storage name '%s' with type_id '%s' and content '%s'",
473       storage->id,
474       storage->type_id,
475       storage->content);
476
477   xbt_lib_set(storage_lib,
478       storage->id,
479       ROUTING_STORAGE_LEVEL,
480       (void *) xbt_strdup(storage->type_id));
481 }
482
483 static void free_storage_content(void *p)
484 {
485   surf_stat_t content = p;
486   free(content->stat.date);
487   free(content->stat.group);
488   free(content->stat.time);
489   free(content->stat.user);
490   free(content->stat.user_rights);
491   free(content);
492 }
493
494 static xbt_dict_t parse_storage_content(char *filename, unsigned long *used_size)
495 {
496   *used_size = 0;
497   if ((!filename) || (strcmp(filename, "") == 0))
498     return NULL;
499
500   xbt_dict_t parse_content = xbt_dict_new_homogeneous(free_storage_content);
501   FILE *file = NULL;
502
503   file = surf_fopen(filename, "r");
504   xbt_assert(file != NULL, "Cannot open file '%s' (path=%s)", filename,
505               xbt_str_join(surf_path, ":"));
506
507   char *line = NULL;
508   size_t len = 0;
509   ssize_t read;
510   char user_rights[12];
511   char user[100];
512   char group[100];
513   char date[12];
514   char time[12];
515   char path[1024];
516   int nb;
517   unsigned long size;
518
519   surf_stat_t content;
520
521   while ((read = getline(&line, &len, file)) != -1) {
522     content = xbt_new0(s_surf_stat_t,1);
523     if(sscanf(line,"%s %d %s %s %ld %s %s %s",user_rights,&nb,user,group,&size,date,time,path)==8) {
524       content->stat.date = xbt_strdup(date);
525       content->stat.group = xbt_strdup(group);
526       content->stat.size = size;
527       content->stat.time = xbt_strdup(time);
528       content->stat.user = xbt_strdup(user);
529       content->stat.user_rights = xbt_strdup(user_rights);
530       *used_size += content->stat.size;
531       xbt_dict_set(parse_content,path,content,NULL);
532     } else {
533       xbt_die("Be sure of passing a good format for content file.\n");
534       // You can generate this kind of file with command line:
535       // find /path/you/want -type f -exec ls -l {} \; 2>/dev/null > ./content.txt
536     }
537   }
538   if (line)
539       free(line);
540   fclose(file);
541   return parse_content;
542 }
543
544 static void storage_parse_storage_type(sg_platf_storage_type_cbarg_t storage_type)
545 {
546   xbt_assert(!xbt_lib_get_or_null(storage_type_lib, storage_type->id,ROUTING_STORAGE_TYPE_LEVEL),
547                "Reading a storage type, processing unit \"%s\" already exists", storage_type->id);
548
549   storage_type_t stype = xbt_new0(s_storage_type_t, 1);
550   stype->model = xbt_strdup(storage_type->model);
551   stype->properties = storage_type->properties;
552   stype->content = xbt_strdup(storage_type->content);
553   stype->type_id = xbt_strdup(storage_type->id);
554   stype->size = storage_type->size * 1000000000; /* storage_type->size is in Gbytes and stype->sizeis in bytes */
555
556   XBT_DEBUG("ROUTING Create a storage type id '%s' with model '%s' content '%s'",
557       stype->type_id,
558       stype->model,
559       storage_type->content);
560
561   xbt_lib_set(storage_type_lib,
562       stype->type_id,
563       ROUTING_STORAGE_TYPE_LEVEL,
564       (void *) stype);
565 }
566 static void storage_parse_mstorage(sg_platf_mstorage_cbarg_t mstorage)
567 {
568   THROW_UNIMPLEMENTED;
569 //  mount_t mnt = xbt_new0(s_mount_t, 1);
570 //  mnt->id = xbt_strdup(mstorage->type_id);
571 //  mnt->name = xbt_strdup(mstorage->name);
572 //
573 //  if(!mount_list){
574 //    XBT_DEBUG("Creata a Mount list for %s",A_surfxml_host_id);
575 //    mount_list = xbt_dynar_new(sizeof(char *), NULL);
576 //  }
577 //  xbt_dynar_push(mount_list,(void *) mnt);
578 //  free(mnt->id);
579 //  free(mnt->name);
580 //  xbt_free(mnt);
581 //  XBT_DEBUG("ROUTING Mount a storage name '%s' with type_id '%s'",mstorage->name, mstorage->id);
582 }
583
584 static void mount_free(void *p)
585 {
586   mount_t mnt = p;
587   xbt_free(mnt->name);
588 }
589
590 static void storage_parse_mount(sg_platf_mount_cbarg_t mount)
591 {
592   // Verification of an existing storage
593 #ifndef NDEBUG
594   void* storage = xbt_lib_get_or_null(storage_lib, mount->id,ROUTING_STORAGE_LEVEL);
595 #endif
596   xbt_assert(storage,"Disk id \"%s\" does not exists", mount->id);
597
598   XBT_DEBUG("ROUTING Mount '%s' on '%s'",mount->id, mount->name);
599
600   s_mount_t mnt;
601   mnt.id = surf_storage_resource_by_name(mount->id);
602   mnt.name = xbt_strdup(mount->name);
603
604   if(!mount_list){
605     XBT_DEBUG("Create a Mount list for %s",A_surfxml_host_id);
606     mount_list = xbt_dynar_new(sizeof(s_mount_t), mount_free);
607   }
608   xbt_dynar_push(mount_list,&mnt);
609 }
610
611 static XBT_INLINE void routing_storage_type_free(void *r)
612 {
613   storage_type_t stype = r;
614   free(stype->model);
615   free(stype->type_id);
616   free(stype->content);
617   xbt_dict_free(&(stype->properties));
618   free(stype);
619 }
620
621 static XBT_INLINE void surf_storage_resource_free(void *r)
622 {
623   // specific to storage
624   storage_t storage = r;
625   xbt_dict_free(&storage->content);
626   xbt_dynar_free(&storage->write_actions);
627   // generic resource
628   surf_resource_free(r);
629 }
630
631 static XBT_INLINE void routing_storage_host_free(void *r)
632 {
633   xbt_dynar_t dyn = r;
634   xbt_dynar_free(&dyn);
635 }
636
637 void storage_register_callbacks() {
638
639   ROUTING_STORAGE_LEVEL = xbt_lib_add_level(storage_lib,xbt_free);
640   ROUTING_STORAGE_HOST_LEVEL = xbt_lib_add_level(storage_lib,routing_storage_host_free);
641   ROUTING_STORAGE_TYPE_LEVEL = xbt_lib_add_level(storage_type_lib,routing_storage_type_free);
642   SURF_STORAGE_LEVEL = xbt_lib_add_level(storage_lib,surf_storage_resource_free);
643
644   sg_platf_storage_add_cb(storage_parse_storage);
645   sg_platf_mstorage_add_cb(storage_parse_mstorage);
646   sg_platf_storage_type_add_cb(storage_parse_storage_type);
647   sg_platf_mount_add_cb(storage_parse_mount);
648 }