1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
/*
Copyright (c) 2009-2011 250bpm s.r.o.
Copyright (c) 2011 iMatix Corporation
Copyright (c) 2011 VMware, Inc.
Copyright (c) 2007-2011 Other contributors as noted in the AUTHORS file
This file is part of 0MQ.
0MQ is free software; you can redistribute it and/or modify it under
the terms of the GNU Lesser General Public License as published by
the Free Software Foundation; either version 3 of the License, or
(at your option) any later version.
0MQ is distributed in the hope that it will be useful,
but WITHOUT ANY WARRANTY; without even the implied warranty of
MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
GNU Lesser General Public License for more details.
You should have received a copy of the GNU Lesser General Public License
along with this program. If not, see <http://www.gnu.org/licenses/>.
*/
#ifndef __ZMQ_XREP_HPP_INCLUDED__
#define __ZMQ_XREP_HPP_INCLUDED__
#include <map>
#include "socket_base.hpp"
#include "session_base.hpp"
#include "stdint.hpp"
#include "blob.hpp"
#include "msg.hpp"
#include "fq.hpp"
namespace zmq
{
class ctx_t;
class pipe_t;
// TODO: This class uses O(n) scheduling. Rewrite it to use O(1) algorithm.
class xrep_t :
public socket_base_t
{
public:
xrep_t (zmq::ctx_t *parent_, uint32_t tid_, int sid);
~xrep_t ();
// Overloads of functions from socket_base_t.
void xattach_pipe (zmq::pipe_t *pipe_, bool icanhasall_);
int xsetsockopt (int option_, const void *optval_, size_t optvallen_);
int xsend (msg_t *msg_, int flags_);
int xrecv (msg_t *msg_, int flags_);
bool xhas_in ();
bool xhas_out ();
void xread_activated (zmq::pipe_t *pipe_);
void xwrite_activated (zmq::pipe_t *pipe_);
void xterminated (zmq::pipe_t *pipe_);
protected:
// Rollback any message parts that were sent but not yet flushed.
int rollback ();
private:
// Fair queueing object for inbound pipes.
fq_t fq;
// This value is either 0 (nothing is prefetched), 1 (only message body
// is prefetched) or 2 (both identity and message body are prefetched).
int prefetched;
// Holds the prefetched identity.
blob_t prefetched_id;
// Holds the prefetched message.
msg_t prefetched_msg;
// If true, more incoming message parts are expected.
bool more_in;
struct outpipe_t
{
zmq::pipe_t *pipe;
bool active;
};
// Outbound pipes indexed by the peer IDs.
typedef std::map <blob_t, outpipe_t> outpipes_t;
outpipes_t outpipes;
// The pipe we are currently writing to.
zmq::pipe_t *current_out;
// If true, more outgoing message parts are expected.
bool more_out;
// Peer ID are generated. It's a simple increment and wrap-over
// algorithm. This value is the next ID to use (if not used already).
uint32_t next_peer_id;
// If true, fail on unroutable messages instead of silently dropping them.
bool fail_unroutable;
xrep_t (const xrep_t&);
const xrep_t &operator = (const xrep_t&);
};
class xrep_session_t : public session_base_t
{
public:
xrep_session_t (zmq::io_thread_t *io_thread_, bool connect_,
socket_base_t *socket_, const options_t &options_,
const address_t *addr_);
~xrep_session_t ();
private:
xrep_session_t (const xrep_session_t&);
const xrep_session_t &operator = (const xrep_session_t&);
};
}
#endif