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
|
/* -*- c++ -*- */
/*
* Copyright 2012-2013 Free Software Foundation, Inc.
*
* This file is part of GNU Radio
*
* GNU Radio is free software; you can redistribute it and/or modify
* it under the terms of the GNU General Public License as published by
* the Free Software Foundation; either version 3, or (at your option)
* any later version.
*
* GNU Radio 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 General Public License for more details.
*
* You should have received a copy of the GNU General Public License
* along with GNU Radio; see the file COPYING. If not, write to
* the Free Software Foundation, Inc., 51 Franklin Street,
* Boston, MA 02110-1301, USA.
*/
#ifdef HAVE_CONFIG_H
#include "config.h"
#endif
#include "message_strobe_impl.h"
#include <gnuradio/io_signature.h>
#include <cstdio>
#include <errno.h>
#include <sys/types.h>
#include <sys/stat.h>
#include <fcntl.h>
#include <stdexcept>
#include <string.h>
#include <iostream>
namespace gr {
namespace blocks {
message_strobe::sptr
message_strobe::make(pmt::pmt_t msg, float period_ms)
{
return gnuradio::get_initial_sptr
(new message_strobe_impl(msg, period_ms));
}
message_strobe_impl::message_strobe_impl(pmt::pmt_t msg, float period_ms)
: block("message_strobe",
io_signature::make(0, 0, 0),
io_signature::make(0, 0, 0)),
d_finished(false),
d_period_ms(period_ms),
d_msg(msg)
{
message_port_register_out(pmt::mp("strobe"));
message_port_register_in(pmt::mp("set_msg"));
set_msg_handler(pmt::mp("set_msg"),
boost::bind(&message_strobe_impl::set_msg, this, _1));
}
message_strobe_impl::~message_strobe_impl()
{
}
bool
message_strobe_impl::start()
{
// NOTE: d_finished should be something explicitely thread safe. But since
// nothing breaks on concurrent access, I'll just leave it as bool.
d_finished = false;
d_thread = boost::shared_ptr<gr::thread::thread>
(new gr::thread::thread(boost::bind(&message_strobe_impl::run, this)));
return block::start();
}
bool
message_strobe_impl::stop()
{
// Shut down the thread
d_finished = true;
d_thread->interrupt();
d_thread->join();
return block::stop();
}
void message_strobe_impl::run()
{
while(!d_finished) {
boost::this_thread::sleep(boost::posix_time::milliseconds(d_period_ms));
if(d_finished) {
return;
}
message_port_pub(pmt::mp("strobe"), d_msg);
}
}
} /* namespace blocks */
} /* namespace gr */
|
