blob: 0dc11e24aeadfb361635c997cde7791ee52ee1d0 (
plain)
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
|
/*
Copyright (c) 2007-2011 iMatix Corporation
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_LB_HPP_INCLUDED__
#define __ZMQ_LB_HPP_INCLUDED__
#include "array.hpp"
#include "pipe.hpp"
namespace zmq
{
// Class manages a set of outbound pipes. On send it load balances
// messages fairly among the pipes.
class lb_t : public i_writer_events
{
public:
lb_t (class own_t *sink_);
~lb_t ();
void attach (writer_t *pipe_);
void terminate ();
int send (zmq_msg_t *msg_, int flags_);
bool has_out ();
// i_writer_events interface implementation.
void activated (writer_t *pipe_);
void terminated (writer_t *pipe_);
private:
// List of outbound pipes.
typedef array_t <class writer_t> pipes_t;
pipes_t pipes;
// Number of active pipes. All the active pipes are located at the
// beginning of the pipes array.
pipes_t::size_type active;
// Points to the last pipe that the most recent message was sent to.
pipes_t::size_type current;
// True if last we are in the middle of a multipart message.
bool more;
// True if we are dropping current message.
bool dropping;
// Object to send events to.
class own_t *sink;
// If true, termination process is already underway.
bool terminating;
lb_t (const lb_t&);
const lb_t &operator = (const lb_t&);
};
}
#endif
|
