1 /* 2 * Common resource classes and functions. 3 * 4 * Copyright (C) 2018, 2019, 2020 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 <ipc/server.h> 25 26 27 28 /* A generic class for an object potentially needing to be closed after use. */ 29 30 class Resource 31 { 32 public: 33 virtual ~Resource() 34 { 35 } 36 37 /* Server details. */ 38 39 virtual int expected_items() = 0; 40 41 virtual ipc_server_handler_type handler() = 0; 42 43 virtual void *interface() = 0; 44 45 /* Deallocation of resources. */ 46 47 virtual void close() 48 { 49 } 50 51 /* Activation. */ 52 53 virtual void activate() 54 { 55 } 56 };