1 /* 2 * Notification support for files. 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 #include "file_notification.h" 23 24 25 26 FileNotification::FileNotification() 27 : NotificationSupport() 28 { 29 } 30 31 /* Accounting methods. */ 32 33 /* Attach a user of this object. */ 34 35 void FileNotification::attach() 36 { 37 std::lock_guard<std::mutex> guard(_lock); 38 39 _attached += 1; 40 } 41 42 /* Detach a user of this object. */ 43 44 unsigned int FileNotification::detach() 45 { 46 std::lock_guard<std::mutex> guard(_lock); 47 48 if (_attached) 49 _attached -= 1; 50 51 return _attached; 52 } 53 54 // vim: tabstop=4 expandtab shiftwidth=4