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
|
/* -*- c++ -*- */
/*
* Copyright 2004,2006,2007,2009,2013 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 <gnuradio/blocks/file_sink_base.h>
#include <gnuradio/logger.h>
#include <gnuradio/thread/thread.h>
#include <fcntl.h>
#include <sys/stat.h>
#include <sys/types.h>
#include <cstdio>
#include <stdexcept>
// win32 (mingw/msvc) specific
#ifdef HAVE_IO_H
#include <io.h>
#endif
#ifdef O_BINARY
#define OUR_O_BINARY O_BINARY
#else
#define OUR_O_BINARY 0
#endif
// should be handled via configure
#ifdef O_LARGEFILE
#define OUR_O_LARGEFILE O_LARGEFILE
#else
#define OUR_O_LARGEFILE 0
#endif
namespace gr {
namespace blocks {
file_sink_base::file_sink_base(const char* filename, bool is_binary, bool append)
: d_fp(0), d_new_fp(0), d_updated(false), d_is_binary(is_binary), d_append(append)
{
if (!open(filename))
throw std::runtime_error("can't open file");
gr::configure_default_loggers(d_logger, d_debug_logger, "file_sink_base");
}
file_sink_base::~file_sink_base()
{
close();
if (d_fp) {
fclose(d_fp);
d_fp = 0;
}
}
bool file_sink_base::open(const char* filename)
{
gr::thread::scoped_lock guard(d_mutex); // hold mutex for duration of this function
// we use the open system call to get access to the O_LARGEFILE flag.
int fd;
int flags;
if (d_append) {
flags = O_WRONLY | O_CREAT | O_APPEND | OUR_O_LARGEFILE | OUR_O_BINARY;
} else {
flags = O_WRONLY | O_CREAT | O_TRUNC | OUR_O_LARGEFILE | OUR_O_BINARY;
}
if ((fd = ::open(filename, flags, 0664)) < 0) {
GR_LOG_ERROR(d_logger, boost::format("%s: %s") % filename % strerror(errno));
return false;
}
if (d_new_fp) { // if we've already got a new one open, close it
fclose(d_new_fp);
d_new_fp = 0;
}
if ((d_new_fp = fdopen(fd, d_is_binary ? "wb" : "w")) == NULL) {
GR_LOG_ERROR(d_logger, boost::format("%s: %s") % filename % strerror(errno));
::close(fd); // don't leak file descriptor if fdopen fails.
}
d_updated = true;
return d_new_fp != 0;
}
void file_sink_base::close()
{
gr::thread::scoped_lock guard(d_mutex); // hold mutex for duration of this function
if (d_new_fp) {
fclose(d_new_fp);
d_new_fp = 0;
}
d_updated = true;
}
void file_sink_base::do_update()
{
if (d_updated) {
gr::thread::scoped_lock guard(d_mutex); // hold mutex for duration of this block
if (d_fp)
fclose(d_fp);
d_fp = d_new_fp; // install new file pointer
d_new_fp = 0;
d_updated = false;
}
}
void file_sink_base::set_unbuffered(bool unbuffered) { d_unbuffered = unbuffered; }
} /* namespace blocks */
} /* namespace gr */
|
