+lmm_system_t storage_maxmin_system = NULL;
+static int storage_selective_update = 0;
+static xbt_swag_t
+ storage_running_action_set_that_does_not_need_being_checked = NULL;
+
+static xbt_dynar_t storage_list;
+
+#define GENERIC_LMM_ACTION(action) action->generic_lmm_action
+#define GENERIC_ACTION(action) GENERIC_LMM_ACTION(action).generic_action
+
+static xbt_dict_t parse_storage_content(char *filename, unsigned long *used_size);
+static int storage_action_unref(surf_action_t action);
+static void storage_action_state_set(surf_action_t action, e_surf_action_state_t state);
+static surf_action_t storage_action_execute (void *storage, double size, e_surf_action_storage_type_t type);
+static void free_storage_content(void *p);
+
+static surf_action_t storage_action_stat(void *storage, surf_file_t stream)
+{
+ surf_action_t action = storage_action_execute(storage,0, STAT);
+ action->file = stream;
+ action->stat = stream->content->stat;
+ return action;
+}
+
+static surf_action_t storage_action_ls(void *storage, const char* path)
+{
+ surf_action_t action = storage_action_execute(storage,0, LS);
+ action->ls_dict = NULL;
+ xbt_dict_t ls_dict = xbt_dict_new();
+
+ char* key;
+ surf_stat_t data = NULL;
+ xbt_dict_cursor_t cursor = NULL;
+
+ xbt_dynar_t dyn = NULL;
+ char* file = NULL;
+
+ // foreach file int the storage
+ xbt_dict_foreach(((storage_t)storage)->content,cursor,key,data){
+ // Search if file start with the prefix 'path'
+ if(xbt_str_start_with(key,path)){
+ file = &key[strlen(path)];
+
+ // Split file with '/'
+ dyn = xbt_str_split(file,"/");
+ file = xbt_dynar_get_as(dyn,0,char*);
+
+ // file
+ if(xbt_dynar_length(dyn) == 1){
+ xbt_dict_set(ls_dict,file,&(data->stat),NULL);
+ }
+ // Directory
+ else
+ {
+ // if directory does not exist yet in dict
+ if(!xbt_dict_get_or_null(ls_dict,file))
+ xbt_dict_set(ls_dict,file,NULL,NULL);
+ }
+ xbt_dynar_free(&dyn);
+ }
+ }
+
+ action->ls_dict = ls_dict;
+ return action;
+}
+
+static surf_action_t storage_action_unlink(void *storage, surf_file_t stream)
+{
+ surf_action_t action = storage_action_execute(storage,0, UNLINK);
+
+ // Add memory to storage
+ ((storage_t)storage)->used_size -= stream->content->stat.size;
+
+ // Remove the file from storage
+ xbt_dict_t content_dict = ((storage_t)storage)->content;
+ xbt_dict_remove(content_dict,stream->name);
+
+ free(stream->name);
+ stream->content = NULL;
+ xbt_free(stream);
+
+ return action;
+}
+
+static surf_action_t storage_action_open(void *storage, const char* mount, const char* path, const char* mode)
+{
+ XBT_DEBUG("\tOpen file '%s'",path);
+ xbt_dict_t content_dict = ((storage_t)storage)->content;
+ surf_stat_t content = xbt_dict_get_or_null(content_dict,path);
+
+ // if file does not exist create an empty file
+ if(!content){
+ content = xbt_new0(s_surf_stat_t,1);
+ content->stat.date = xbt_strdup("");
+ content->stat.group = xbt_strdup("");
+ content->stat.size = 0;
+ content->stat.time = xbt_strdup("");
+ content->stat.user = xbt_strdup("");
+ content->stat.user_rights = xbt_strdup("");
+ xbt_dict_set(content_dict,path,content,NULL);
+ XBT_DEBUG("File '%s' was not found, file created.",path);
+ }
+ surf_file_t file = xbt_new0(s_surf_file_t,1);
+ file->name = xbt_strdup(path);
+ file->content = content;
+ file->storage = mount;
+
+ surf_action_t action = storage_action_execute(storage,0, OPEN);
+ action->file = (void *)file;
+ return action;
+}
+
+static surf_action_t storage_action_close(void *storage, surf_file_t fp)
+{
+ char *filename = fp->name;
+ XBT_DEBUG("\tClose file '%s' size '%f'",filename,fp->content->stat.size);
+ // unref write actions from storage
+ surf_action_storage_t write_action;
+ unsigned int i;
+ xbt_dynar_foreach(((storage_t)storage)->write_actions,i,write_action) {
+ if ((write_action->generic_lmm_action.generic_action.file) == fp) {
+ xbt_dynar_cursor_rm(((storage_t)storage)->write_actions, &i);
+ storage_action_unref((surf_action_t) write_action);
+ }
+ }
+
+ free(fp->name);
+ fp->content = NULL;
+ xbt_free(fp);
+ surf_action_t action = storage_action_execute(storage,0, CLOSE);
+ return action;
+}
+
+static surf_action_t storage_action_read(void *storage, void* ptr, double size, size_t nmemb, surf_file_t stream)
+{
+ surf_stat_t content = stream->content;
+ if(size > content->stat.size)
+ size = content->stat.size;
+ surf_action_t action = storage_action_execute(storage,size,READ);
+ return action;
+}
+
+static surf_action_t storage_action_write(void *storage, const void* ptr, size_t size, size_t nmemb, surf_file_t stream)
+{
+ char *filename = stream->name;
+ surf_stat_t content = stream->content;
+ XBT_DEBUG("\tWrite file '%s' size '%zu/%f'",filename,size,content->stat.size);
+
+ surf_action_t action = storage_action_execute(storage,size,WRITE);
+ action->file = stream;
+
+ // If the storage is full
+ if(((storage_t)storage)->used_size==((storage_t)storage)->size) {
+ storage_action_state_set((surf_action_t) action, SURF_ACTION_FAILED);
+ }
+ return action;
+}
+
+static surf_action_t storage_action_execute (void *storage, double size, e_surf_action_storage_type_t type)
+{
+ surf_action_storage_t action = NULL;
+ storage_t STORAGE = storage;
+
+ XBT_IN("(%s,%f)", surf_resource_name(STORAGE), size);
+ action =
+ surf_action_new(sizeof(s_surf_action_storage_t), size, surf_storage_model,
+ STORAGE->state_current != SURF_RESOURCE_ON);
+
+ // Save the storage on action
+ action->storage = storage;
+ GENERIC_LMM_ACTION(action).suspended = 0; /* Should be useless because of the
+ calloc but it seems to help valgrind... */
+
+ GENERIC_LMM_ACTION(action).variable =
+ lmm_variable_new(storage_maxmin_system, action, 1.0, -1.0 , 3);
+
+ // Must be less than the max bandwidth for all actions
+ lmm_expand(storage_maxmin_system, STORAGE->constraint,
+ GENERIC_LMM_ACTION(action).variable, 1.0);
+
+ switch(type) {
+ case OPEN:
+ case CLOSE:
+ case STAT:
+ case UNLINK:
+ case LS:
+ break;
+ case READ:
+ lmm_expand(storage_maxmin_system, STORAGE->constraint_read,
+ GENERIC_LMM_ACTION(action).variable, 1.0);
+ break;
+ case WRITE:
+ lmm_expand(storage_maxmin_system, STORAGE->constraint_write,
+ GENERIC_LMM_ACTION(action).variable, 1.0);
+ xbt_dynar_push(((storage_t)storage)->write_actions,&action);
+ surf_action_ref((surf_action_t) action);
+ break;
+ }
+ action->type = type;
+ XBT_OUT();
+ return (surf_action_t) action;
+}
+
+static void* storage_create_resource(const char* id, const char* model,const char* type_id,const char* content_name)
+{
+ storage_t storage = NULL;
+
+ xbt_assert(!surf_storage_resource_priv(surf_storage_resource_by_name(id)),
+ "Storage '%s' declared several times in the platform file",
+ id);
+ storage = (storage_t) surf_resource_new(sizeof(s_storage_t),
+ surf_storage_model, id,NULL);
+
+ storage->state_current = SURF_RESOURCE_ON;
+ storage->used_size = 0;
+ storage->size = 0;
+ storage->write_actions = xbt_dynar_new(sizeof(char *),NULL);
+
+ storage_type_t storage_type = xbt_lib_get_or_null(storage_type_lib, type_id,ROUTING_STORAGE_TYPE_LEVEL);
+ double Bread = atof(xbt_dict_get(storage_type->properties,"Bread"));
+ double Bwrite = atof(xbt_dict_get(storage_type->properties,"Bwrite"));
+ double Bconnection = atof(xbt_dict_get(storage_type->properties,"Bconnection"));
+ XBT_DEBUG("Create resource with Bconnection '%f' Bread '%f' Bwrite '%f' and Size '%ld'",Bconnection,Bread,Bwrite,storage_type->size);
+ storage->constraint = lmm_constraint_new(storage_maxmin_system, storage, Bconnection);
+ storage->constraint_read = lmm_constraint_new(storage_maxmin_system, storage, Bread);
+ storage->constraint_write = lmm_constraint_new(storage_maxmin_system, storage, Bwrite);
+ storage->content = parse_storage_content((char*)content_name,&(storage->used_size));
+ storage->size = storage_type->size;
+
+ xbt_lib_set(storage_lib, id, SURF_STORAGE_LEVEL, storage);
+
+ 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",
+ id,
+ model,
+ type_id,
+ storage_type->properties,
+ Bread);
+
+ if(!storage_list) storage_list=xbt_dynar_new(sizeof(char *),NULL);
+ xbt_dynar_push(storage_list,&storage);
+
+ return storage;
+}
+
+static void storage_finalize(void)
+{
+ lmm_system_free(storage_maxmin_system);
+ storage_maxmin_system = NULL;
+
+ surf_model_exit(surf_storage_model);
+ surf_storage_model = NULL;
+
+ if(storage_list)
+ xbt_dynar_free(&storage_list);
+
+ xbt_swag_free
+ (storage_running_action_set_that_does_not_need_being_checked);
+ storage_running_action_set_that_does_not_need_being_checked = NULL;
+}
+
+static void storage_update_actions_state(double now, double delta)
+{
+ surf_action_storage_t action = NULL;
+ surf_action_storage_t next_action = NULL;
+ xbt_swag_t running_actions = surf_storage_model->states.running_action_set;
+
+ // Update the disk usage
+ // Update the file size
+ // Foreach action of type write
+ xbt_swag_foreach_safe(action, next_action, running_actions) {
+ if(action->type == WRITE)
+ {
+ double rate = lmm_variable_getvalue(GENERIC_LMM_ACTION(action).variable);
+ ((storage_t)(action->storage))->used_size += delta * rate; // disk usage
+ ((surf_action_t)action)->file->content->stat.size += delta * rate; // file size
+ }
+ }
+
+ xbt_swag_foreach_safe(action, next_action, running_actions) {
+
+ double_update(&(GENERIC_ACTION(action).remains),
+ lmm_variable_getvalue(GENERIC_LMM_ACTION(action).variable) * delta);
+
+ if (GENERIC_LMM_ACTION(action).generic_action.max_duration != NO_MAX_DURATION)
+ double_update(&(GENERIC_ACTION(action).max_duration), delta);
+
+ if(GENERIC_ACTION(action).remains > 0 &&
+ lmm_get_variable_weight(GENERIC_LMM_ACTION(action).variable) > 0 &&
+ ((storage_t)action->storage)->used_size == ((storage_t)action->storage)->size)
+ {
+ GENERIC_ACTION(action).finish = surf_get_clock();
+ storage_action_state_set((surf_action_t) action, SURF_ACTION_FAILED);
+ } else if ((GENERIC_ACTION(action).remains <= 0) &&
+ (lmm_get_variable_weight(GENERIC_LMM_ACTION(action).variable) > 0))
+ {
+ GENERIC_ACTION(action).finish = surf_get_clock();
+ storage_action_state_set((surf_action_t) action, SURF_ACTION_DONE);
+ } else if ((GENERIC_ACTION(action).max_duration != NO_MAX_DURATION) &&
+ (GENERIC_ACTION(action).max_duration <= 0))
+ {
+ GENERIC_ACTION(action).finish = surf_get_clock();
+ storage_action_state_set((surf_action_t) action, SURF_ACTION_DONE);
+ }
+ }
+
+ return;
+}
+
+static double storage_share_resources(double NOW)
+{
+ XBT_DEBUG("storage_share_resources %f",NOW);
+ s_surf_action_storage_t action;
+ unsigned int i,j;
+ storage_t storage;
+ surf_action_storage_t write_action;
+
+ double min_completion = generic_maxmin_share_resources(surf_storage_model->states.running_action_set,
+ xbt_swag_offset(action, generic_lmm_action.variable),
+ storage_maxmin_system, lmm_solve);
+
+ double rate;
+ // Foreach disk
+ xbt_dynar_foreach(storage_list,i,storage)
+ {
+ rate = 0;
+ // Foreach write action on disk
+ xbt_dynar_foreach(storage->write_actions,j,write_action)
+ {
+ rate += lmm_variable_getvalue(write_action->generic_lmm_action.variable);
+ }
+ if(rate > 0)
+ min_completion = MIN(min_completion, (storage->size-storage->used_size)/rate);
+ }
+
+ return min_completion;
+}
+
+static int storage_resource_used(void *resource_id)
+{
+ THROW_UNIMPLEMENTED;
+ return 0;
+}
+
+static void storage_resources_state(void *id, tmgr_trace_event_t event_type,
+ double value, double time)
+{
+ THROW_UNIMPLEMENTED;
+}