GNU Radio 3.5.3.1 C++ API
gr_vmcircbuf_createfilemapping.h
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/* -*- c++ -*- */
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/*
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* Copyright 2003,2005 Free Software Foundation, Inc.
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*
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* This file is part of GNU Radio
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*
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* GNU Radio is free software; you can redistribute it and/or modify
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* it under the terms of the GNU General Public License as published by
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* the Free Software Foundation; either version 3, or (at your option)
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* any later version.
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*
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* GNU Radio is distributed in the hope that it will be useful,
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* but WITHOUT ANY WARRANTY; without even the implied warranty of
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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* GNU General Public License for more details.
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*
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* You should have received a copy of the GNU General Public License
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* along with GNU Radio; see the file COPYING. If not, write to
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* the Free Software Foundation, Inc., 51 Franklin Street,
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* Boston, MA 02110-1301, USA.
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*/
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#ifndef _GR_VMCIRCBUF_CREATEFILEMAPPING_H_
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#define _GR_VMCIRCBUF_CREATEFILEMAPPING_H_
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#include <
gr_core_api.h
>
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#include <
gr_vmcircbuf.h
>
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#ifdef HAVE_CREATEFILEMAPPING
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#include <windows.h>
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#endif
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/*!
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* \brief concrete class to implement circular buffers with mmap and shm_open
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* \ingroup internal
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*/
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class
GR_CORE_API
gr_vmcircbuf_createfilemapping
:
public
gr_vmcircbuf
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{
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public
:
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// CREATORS
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gr_vmcircbuf_createfilemapping
(
int
size);
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virtual
~
gr_vmcircbuf_createfilemapping
();
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#ifdef HAVE_CREATEFILEMAPPING
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private
:
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HANDLE d_handle;
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LPVOID d_first_copy;
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LPVOID d_second_copy;
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#endif
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};
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/*!
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* \brief concrete factory for circular buffers built using mmap and shm_open
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*/
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class
GR_CORE_API
gr_vmcircbuf_createfilemapping_factory
:
public
gr_vmcircbuf_factory
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{
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private
:
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static
gr_vmcircbuf_factory
*s_the_factory;
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public
:
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static
gr_vmcircbuf_factory
*singleton ();
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virtual
const
char
*
name
()
const
{
return
"gr_vmcircbuf_createfilemapping_factory"
; }
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/*!
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* \brief return granularity of mapping, typically equal to page size
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*/
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virtual
int
granularity
();
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/*!
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* \brief return a gr_vmcircbuf, or 0 if unable.
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*
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* Call this to create a doubly mapped circular buffer.
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*/
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virtual
gr_vmcircbuf
*
make
(
int
size);
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};
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#endif
/* _GR_VMCIRCBUF_CREATEFILEMAPPING_H_ */
gnuradio-core
src
lib
runtime
gr_vmcircbuf_createfilemapping.h
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