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 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/>.
*/
#include "dealer.hpp"
#include "err.hpp"
#include "msg.hpp"
zmq::dealer_t::dealer_t (class ctx_t *parent_, uint32_t tid_, int sid_) :
socket_base_t (parent_, tid_, sid_),
prefetched (false)
{
options.type = ZMQ_DEALER;
// TODO: Uncomment the following line when DEALER will become true DEALER
// rather than generic dealer socket.
// If the socket is closing we can drop all the outbound requests. There'll
// be noone to receive the replies anyway.
// options.delay_on_close = false;
options.send_identity = true;
options.recv_identity = true;
prefetched_msg.init ();
}
zmq::dealer_t::~dealer_t ()
{
prefetched_msg.close ();
}
void zmq::dealer_t::xattach_pipe (pipe_t *pipe_, bool icanhasall_)
{
zmq_assert (pipe_);
fq.attach (pipe_);
lb.attach (pipe_);
}
int zmq::dealer_t::xsend (msg_t *msg_, int flags_)
{
return lb.send (msg_, flags_);
}
int zmq::dealer_t::xrecv (msg_t *msg_, int flags_)
{
// If there is a prefetched message, return it.
if (prefetched) {
int rc = msg_->move (prefetched_msg);
errno_assert (rc == 0);
prefetched = false;
return 0;
}
// DEALER socket doesn't use identities. We can safely drop it and
while (true) {
int rc = fq.recv (msg_, flags_);
if (rc != 0)
return rc;
if (likely (!(msg_->flags () & msg_t::identity)))
break;
}
return 0;
}
bool zmq::dealer_t::xhas_in ()
{
// We may already have a message pre-fetched.
if (prefetched)
return true;
// Try to read the next message to the pre-fetch buffer.
int rc = dealer_t::xrecv (&prefetched_msg, ZMQ_DONTWAIT);
if (rc != 0 && errno == EAGAIN)
return false;
zmq_assert (rc == 0);
prefetched = true;
return true;
}
bool zmq::dealer_t::xhas_out ()
{
return lb.has_out ();
}
void zmq::dealer_t::xread_activated (pipe_t *pipe_)
{
fq.activated (pipe_);
}
void zmq::dealer_t::xwrite_activated (pipe_t *pipe_)
{
lb.activated (pipe_);
}
void zmq::dealer_t::xterminated (pipe_t *pipe_)
{
fq.terminated (pipe_);
lb.terminated (pipe_);
}
zmq::dealer_session_t::dealer_session_t (io_thread_t *io_thread_, bool connect_,
socket_base_t *socket_, const options_t &options_,
const address_t *addr_) :
session_base_t (io_thread_, connect_, socket_, options_, addr_)
{
}
zmq::dealer_session_t::~dealer_session_t ()
{
}