1 files changed, 76 insertions, 0 deletions
diff --git a/gnuradio-runtime/lib/gr_vmcircbuf_createfilemapping.h b/gnuradio-runtime/lib/gr_vmcircbuf_createfilemapping.h
new file mode 100644
index 0000000000..a4bb5cbe92
--- /dev/null
+++ b/gnuradio-runtime/lib/gr_vmcircbuf_createfilemapping.h
@@ -0,0 +1,76 @@
+/* -*- c++ -*- */
+/*
+ * Copyright 2003,2005 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_CREATEFILEMAPPING_H_
+#define _GR_VMCIRCBUF_CREATEFILEMAPPING_H_
+
+#include <gr_runtime_api.h>
+#include <gr_vmcircbuf.h>
+
+#ifdef HAVE_CREATEFILEMAPPING
+#include <windows.h>
+#endif
+/*!
+ * \brief concrete class to implement circular buffers with mmap and shm_open
+ * \ingroup internal
+ */
+class GR_RUNTIME_API gr_vmcircbuf_createfilemapping : public gr_vmcircbuf
+{
+ public:
+   // CREATORS
+   gr_vmcircbuf_createfilemapping (int size);
+   virtual ~gr_vmcircbuf_createfilemapping ();
+#ifdef HAVE_CREATEFILEMAPPING
+ private:
+   HANDLE d_handle;
+   LPVOID d_first_copy;
+   LPVOID d_second_copy;
+#endif
+};
+
+/*!
+ * \brief concrete factory for circular buffers built using mmap and shm_open
+ */
+class GR_RUNTIME_API gr_vmcircbuf_createfilemapping_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_createfilemapping_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_CREATEFILEMAPPING_H_ */