long dataset_number(std::string& host_name, std::string storage_type){
/**
Returns a number of dataset on a given storage.
Parameters:
----------
@host_name -- name of host
@storage_type -- DISK or TAPE
*/
std::string storage_name = host_name + storage_type;
msg_storage_t st = MSG_storage_get_by_name(storage_name.c_str());
xbt_dict_cursor_t cursor = NULL;
char *key;
double data;
long amount = 0;
xbt_dict_t storage_content = MSG_storage_get_content(st);
xbt_dict_foreach(storage_content, cursor, key, data){
amount++;
}
xbt_dict_free(&storage_content);
xbt_dict_cursor_free(&cursor);
return amount;
}
/**
* @brief Get current data, or free the cursor if there is no data left
*
* @returns true if it's ok, false if there is no more data
*/
inline int xbt_dict_cursor_get_or_free(xbt_dict_cursor_t * cursor, char **key, void **data)
{
xbt_dictelm_t current;
XBT_CDEBUG(xbt_dict_cursor, "xbt_dict_get_or_free");
if (!cursor || !(*cursor))
return FALSE;
current = (*cursor)->current;
if (current == NULL) { /* no data left */
xbt_dict_cursor_free(cursor);
return FALSE;
}
*key = current->key;
*data = current->content;
return TRUE;
}