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
129
130
131
|
/* -*- c++ -*- */
/*
* Copyright 2013,2014,2019 Free Software Foundation, Inc.
*
* This file is part of GNU Radio.
*
* SPDX-License-Identifier: GPL-3.0-or-later
*
*/
#ifdef HAVE_CONFIG_H
#include "config.h"
#endif
#include "req_msg_source_impl.h"
#include "tag_headers.h"
#include <gnuradio/io_signature.h>
#include <boost/date_time/posix_time/posix_time.hpp>
#include <boost/thread/thread.hpp>
namespace gr {
namespace zeromq {
req_msg_source::sptr req_msg_source::make(char* address, int timeout, bool bind)
{
return gnuradio::make_block_sptr<req_msg_source_impl>(address, timeout, bind);
}
req_msg_source_impl::req_msg_source_impl(char* address, int timeout, bool bind)
: gr::block("req_msg_source",
gr::io_signature::make(0, 0, 0),
gr::io_signature::make(0, 0, 0)),
d_timeout(timeout),
d_port(pmt::mp("out"))
{
int major, minor, patch;
zmq::version(&major, &minor, &patch);
if (major < 3) {
d_timeout = timeout * 1000;
}
d_context = new zmq::context_t(1);
d_socket = new zmq::socket_t(*d_context, ZMQ_REQ);
int time = 0;
d_socket->setsockopt(ZMQ_LINGER, &time, sizeof(time));
if (bind) {
d_socket->bind(address);
} else {
d_socket->connect(address);
}
message_port_register_out(d_port);
}
req_msg_source_impl::~req_msg_source_impl()
{
d_socket->close();
delete d_socket;
delete d_context;
}
bool req_msg_source_impl::start()
{
d_finished = false;
d_thread = new boost::thread(boost::bind(&req_msg_source_impl::readloop, this));
return true;
}
bool req_msg_source_impl::stop()
{
d_finished = true;
d_thread->join();
return true;
}
void req_msg_source_impl::readloop()
{
while (!d_finished) {
// std::cout << "readloop\n";
zmq::pollitem_t itemsout[] = {
{ static_cast<void*>(*d_socket), 0, ZMQ_POLLOUT, 0 }
};
zmq::poll(&itemsout[0], 1, d_timeout);
// If we got a reply, process
if (itemsout[0].revents & ZMQ_POLLOUT) {
// Request data, FIXME non portable?
int nmsg = 1;
zmq::message_t request(sizeof(int));
memcpy((void*)request.data(), &nmsg, sizeof(int));
#if USE_NEW_CPPZMQ_SEND_RECV
d_socket->send(request, zmq::send_flags::none);
#else
d_socket->send(request);
#endif
}
zmq::pollitem_t items[] = { { static_cast<void*>(*d_socket), 0, ZMQ_POLLIN, 0 } };
zmq::poll(&items[0], 1, d_timeout);
// If we got a reply, process
if (items[0].revents & ZMQ_POLLIN) {
// Receive data
zmq::message_t msg;
#if USE_NEW_CPPZMQ_SEND_RECV
d_socket->recv(msg);
#else
d_socket->recv(&msg);
#endif
std::string buf(static_cast<char*>(msg.data()), msg.size());
std::stringbuf sb(buf);
try {
pmt::pmt_t m = pmt::deserialize(sb);
message_port_pub(d_port, m);
} catch (pmt::exception& e) {
GR_LOG_ERROR(d_logger, std::string("Invalid PMT message: ") + e.what());
}
} else {
boost::this_thread::sleep(boost::posix_time::microseconds(100));
}
}
}
} /* namespace zeromq */
} /* namespace gr */
|
