diff options
| author | Tom Rondeau <trondeau@vt.edu> | 2013-04-17 13:43:52 -0400 |
|---|---|---|
| committer | Tom Rondeau <trondeau@vt.edu> | 2013-04-29 14:52:56 -0400 |
| commit | f3e2e07201c50033bf6c9d0c6a6f068557b4f17f (patch) | |
| tree | 140b3c2d20a951ffd4abd564c3378ee2e2f9fc7c /gnuradio-runtime/lib/vmcircbuf_sysv_shm.h | |
| parent | 35303ae975a5b1bdecc2492bc96e2b8e89b62a3d (diff) | |
runtime: converting runtime core to gr namespace, gnuradio include dir.
Diffstat (limited to 'gnuradio-runtime/lib/vmcircbuf_sysv_shm.h')
| -rw-r--r-- | gnuradio-runtime/lib/vmcircbuf_sysv_shm.h | 70 |
1 files changed, 70 insertions, 0 deletions
diff --git a/gnuradio-runtime/lib/vmcircbuf_sysv_shm.h b/gnuradio-runtime/lib/vmcircbuf_sysv_shm.h new file mode 100644 index 0000000000..08e0040bf1 --- /dev/null +++ b/gnuradio-runtime/lib/vmcircbuf_sysv_shm.h @@ -0,0 +1,70 @@ +/* -*- 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_SYSV_SHM_H +#define GR_VMCIRCBUF_SYSV_SHM_H + +#include <gnuradio/api.h> +#include "vmcircbuf.h" + +namespace gr { + + /*! + * \brief concrete class to implement circular buffers with mmap and shm_open + * \ingroup internal + */ + class GR_RUNTIME_API vmcircbuf_sysv_shm : public gr::vmcircbuf + { + public: + vmcircbuf_sysv_shm(int size); + virtual ~vmcircbuf_sysv_shm(); + }; + + /*! + * \brief concrete factory for circular buffers built using mmap and shm_open + */ + class GR_RUNTIME_API vmcircbuf_sysv_shm_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_sysv_shm_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); + }; + +} /* namespace gr */ + +#endif /* GR_VMCIRCBUF_SYSV_SHM_H */ |