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_PULL_HPP_INCLUDED__
31#define __ZMQ_PULL_HPP_INCLUDED__
32
33#include "socket_base.hpp"
34#include "session_base.hpp"
35#include "fq.hpp"
36
37namespace zmq
38{
39class ctx_t;
40class pipe_t;
41class msg_t;
42class io_thread_t;
43
44class pull_t : public socket_base_t
45{
46 public:
47 pull_t (zmq::ctx_t *parent_, uint32_t tid_, int sid_);
48 ~pull_t ();
49
50 protected:
51 // Overrides of functions from socket_base_t.
52 void xattach_pipe (zmq::pipe_t *pipe_,
53 bool subscribe_to_all_,
54 bool locally_initiated_);
55 int xrecv (zmq::msg_t *msg_);
56 bool xhas_in ();
57 void xread_activated (zmq::pipe_t *pipe_);
58 void xpipe_terminated (zmq::pipe_t *pipe_);
59
60 private:
61 // Fair queueing object for inbound pipes.
62 fq_t _fq;
63
64 ZMQ_NON_COPYABLE_NOR_MOVABLE (pull_t)
65};
66}
67
68#endif
69