/[gnuradio]/gnuradio-core/src/lib/runtime/gr_vmcircbuf_mmap_tmpfile.h
ViewVC logotype

Contents of /gnuradio-core/src/lib/runtime/gr_vmcircbuf_mmap_tmpfile.h

Parent Directory Parent Directory | Revision Log Revision Log


Revision 1.1 - (show annotations) (download)
Sat Apr 10 18:00:56 2004 UTC (20 years ago) by eb
Branch: MAIN
Branch point for: INITIAL_VENDOR
File MIME type: text/plain
Initial revision

1 /* -*- c++ -*- */
2 /*
3 * Copyright 2003 Free Software Foundation, Inc.
4 *
5 * This file is part of GNU Radio
6 *
7 * GNU Radio is free software; you can redistribute it and/or modify
8 * it under the terms of the GNU General Public License as published by
9 * the Free Software Foundation; either version 2, or (at your option)
10 * any later version.
11 *
12 * GNU Radio is distributed in the hope that it will be useful,
13 * but WITHOUT ANY WARRANTY; without even the implied warranty of
14 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
15 * GNU General Public License for more details.
16 *
17 * You should have received a copy of the GNU General Public License
18 * along with GNU Radio; see the file COPYING. If not, write to
19 * the Free Software Foundation, Inc., 59 Temple Place - Suite 330,
20 * Boston, MA 02111-1307, USA.
21 */
22
23 #ifndef _GR_VMCIRCBUF_MMAP_TMPFILE_H_
24 #define _GR_VMCIRCBUF_MMAP_TMPFILE_H_
25
26 #include <gr_vmcircbuf.h>
27
28 /*!
29 * \brief concrete class to implement circular buffers with mmap and shm_open
30 */
31 class gr_vmcircbuf_mmap_tmpfile : public gr_vmcircbuf {
32 public:
33
34 // CREATORS
35
36 gr_vmcircbuf_mmap_tmpfile (int size);
37 virtual ~gr_vmcircbuf_mmap_tmpfile ();
38 };
39
40 /*!
41 * \brief concrete factory for circular buffers built using mmap and shm_open
42 */
43 class gr_vmcircbuf_mmap_tmpfile_factory : public gr_vmcircbuf_factory {
44 private:
45 static gr_vmcircbuf_factory *s_the_factory;
46
47 public:
48 static gr_vmcircbuf_factory *singleton ();
49
50 virtual const char *name () const { return "gr_vmcircbuf_mmap_tmpfile_factory"; }
51
52 /*!
53 * \brief return granularity of mapping, typically equal to page size
54 */
55 virtual int granularity ();
56
57 /*!
58 * \brief return a gr_vmcircbuf, or 0 if unable.
59 *
60 * Call this to create a doubly mapped circular buffer.
61 */
62 virtual gr_vmcircbuf *make (int size);
63 };
64
65 #endif /* _GR_VMCIRCBUF_MMAP_TMPFILE_H_ */

savannah-hackers-public@gnu.org
ViewVC Help
Powered by ViewVC 1.1.26