1 /* 2 Copyright (c) 2007-2016 Contributors as noted in the AUTHORS file 3 4 This file is part of libzmq, the ZeroMQ core engine in C++. 5 6 libzmq is free software; you can redistribute it and/or modify it under 7 the terms of the GNU Lesser General Public License (LGPL) as published 8 by the Free Software Foundation; either version 3 of the License, or 9 (at your option) any later version. 10 11 As a special exception, the Contributors give you permission to link 12 this library with independent modules to produce an executable, 13 regardless of the license terms of these independent modules, and to 14 copy and distribute the resulting executable under terms of your choice, 15 provided that you also meet, for each linked independent module, the 16 terms and conditions of the license of that module. An independent 17 module is a module which is not derived from or based on this library. 18 If you modify this library, you must extend this exception to your 19 version of the library. 20 21 libzmq is distributed in the hope that it will be useful, but WITHOUT 22 ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or 23 FITNESS FOR A PARTICULAR PURPOSE. See the GNU Lesser General Public 24 License for more details. 25 26 You should have received a copy of the GNU Lesser General Public License 27 along with this program. If not, see <http://www.gnu.org/licenses/>. 28 */ 29 30 #ifndef __ZMQ_I_POLL_EVENTS_HPP_INCLUDED__ 31 #define __ZMQ_I_POLL_EVENTS_HPP_INCLUDED__ 32 33 #include "macros.hpp" 34 35 namespace zmq 36 { 37 // Virtual interface to be exposed by object that want to be notified 38 // about events on file descriptors. 39 40 struct i_poll_events 41 { 42 virtual ~i_poll_events () ZMQ_DEFAULT; 43 44 // Called by I/O thread when file descriptor is ready for reading. 45 virtual void in_event () = 0; 46 47 // Called by I/O thread when file descriptor is ready for writing. 48 virtual void out_event () = 0; 49 50 // Called when timer expires. 51 virtual void timer_event (int id_) = 0; 52 }; 53 } 54 55 #endif 56