1 /* 2 * A registry of filesystem object providers. 3 * 4 * Copyright (C) 2021, 2022 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 29 30 31 /* Forward declaration. */ 32 33 class Provider; 34 35 36 37 /* Mapping type from file identifiers to providers. */ 38 39 typedef std::map<fileid_t, Provider *> ProviderMapping; 40 typedef std::pair<fileid_t, Provider *> ProviderMappingEntry; 41 42 43 44 /* A registry of filesystem object providers. */ 45 46 class ProviderRegistry 47 { 48 protected: 49 ProviderMapping _providers; 50 std::mutex _lock; 51 52 public: 53 /* Filesystem object access. */ 54 55 Provider *get(fileid_t fileid); 56 57 void remove(fileid_t fileid, Provider *provider); 58 59 void set(fileid_t fileid, Provider *provider); 60 61 /* Methods for resources. */ 62 63 void detach(fileid_t fileid, Provider *provider); 64 }; 65 66 // vim: tabstop=4 expandtab shiftwidth=4