1 /* 2 * A registry of filesystem objects. 3 * 4 * Copyright (C) 2021 Paul Boddie <paul@boddie.org.uk> 5 * 6 * This program is free software; you can redistribute it and/or 7 * modify it under the terms of the GNU General Public License as 8 * published by the Free Software Foundation; either version 2 of 9 * the License, or (at your option) any later version. 10 * 11 * This program is distributed in the hope that it will be useful, 12 * but WITHOUT ANY WARRANTY; without even the implied warranty of 13 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the 14 * GNU General Public License for more details. 15 * 16 * You should have received a copy of the GNU General Public License 17 * along with this program; if not, write to the Free Software 18 * Foundation, Inc., 51 Franklin Street, Fifth Floor, 19 * Boston, MA 02110-1301, USA 20 */ 21 22 #pragma once 23 24 #include <map> 25 #include <mutex> 26 27 #include <mem/types.h> 28 #include <fsserver/accountable.h> 29 30 31 32 /* Mapping type from file identifiers to page mappers. */ 33 34 typedef std::map<fileid_t, Accountable *> FileMapping; 35 typedef std::pair<fileid_t, Accountable *> FileMappingEntry; 36 37 38 39 /* A registry of filesystem objects. */ 40 41 class FileRegistry 42 { 43 protected: 44 FileMapping _providers; 45 std::mutex _lock; 46 47 /* Filesystem object access. */ 48 49 Accountable *get(fileid_t fileid); 50 51 void remove(fileid_t fileid, Accountable *obj); 52 53 void set(fileid_t fileid, Accountable *obj); 54 55 public: 56 /* Methods for resources. */ 57 58 void detach(fileid_t fileid, Accountable *mapper); 59 }; 60 61 // vim: tabstop=4 expandtab shiftwidth=4