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| author | Johnathan Corgan <johnathan@corganlabs.com> | 2013-03-27 20:41:40 -0700 |
|---|---|---|
| committer | Johnathan Corgan <johnathan@corganlabs.com> | 2013-03-27 20:41:40 -0700 |
| commit | 2caaabf8e1dd771174fd42e51c8c8090864638e6 (patch) | |
| tree | e58fe2bc53120acfd11aa6687fe5fa0aaa58ca71 /gnuradio-runtime/lib/gr_vmcircbuf_mmap_tmpfile.h | |
| parent | 40ab0030dbe821c9ed475a0b73898040f4af581c (diff) | |
| parent | d7cde125dc3661a62e1013a4a017f0f1efa46e6e (diff) | |
Merge branch 'runtime-3.7' into next
Diffstat (limited to 'gnuradio-runtime/lib/gr_vmcircbuf_mmap_tmpfile.h')
| -rw-r--r-- | gnuradio-runtime/lib/gr_vmcircbuf_mmap_tmpfile.h | 67 |
1 files changed, 67 insertions, 0 deletions
diff --git a/gnuradio-runtime/lib/gr_vmcircbuf_mmap_tmpfile.h b/gnuradio-runtime/lib/gr_vmcircbuf_mmap_tmpfile.h new file mode 100644 index 0000000000..cd865734f2 --- /dev/null +++ b/gnuradio-runtime/lib/gr_vmcircbuf_mmap_tmpfile.h @@ -0,0 +1,67 @@ +/* -*- c++ -*- */ +/* + * Copyright 2003 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. + */ + +#ifndef _GR_VMCIRCBUF_MMAP_TMPFILE_H_ +#define _GR_VMCIRCBUF_MMAP_TMPFILE_H_ + +#include <gr_runtime_api.h> +#include <gr_vmcircbuf.h> + +/*! + * \brief concrete class to implement circular buffers with mmap and shm_open + * \ingroup internal + */ +class GR_RUNTIME_API gr_vmcircbuf_mmap_tmpfile : public gr_vmcircbuf { + public: + + // CREATORS + + gr_vmcircbuf_mmap_tmpfile (int size); + virtual ~gr_vmcircbuf_mmap_tmpfile (); +}; + +/*! + * \brief concrete factory for circular buffers built using mmap and shm_open + */ +class GR_RUNTIME_API gr_vmcircbuf_mmap_tmpfile_factory : public gr_vmcircbuf_factory { + private: + static gr_vmcircbuf_factory *s_the_factory; + + public: + static gr_vmcircbuf_factory *singleton (); + + virtual const char *name () const { return "gr_vmcircbuf_mmap_tmpfile_factory"; } + + /*! + * \brief return granularity of mapping, typically equal to page size + */ + virtual int granularity (); + + /*! + * \brief return a gr_vmcircbuf, or 0 if unable. + * + * Call this to create a doubly mapped circular buffer. + */ + virtual gr_vmcircbuf *make (int size); +}; + +#endif /* _GR_VMCIRCBUF_MMAP_TMPFILE_H_ */ |