GNU Radio 3.5.1 C++ API
gr_sptr_magic.h
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00001 /* -*- c++ -*- */
00002 /*
00003  * Copyright 2008 Free Software Foundation, Inc.
00004  * 
00005  * This file is part of GNU Radio
00006  * 
00007  * GNU Radio is free software; you can redistribute it and/or modify
00008  * it under the terms of the GNU General Public License as published by
00009  * the Free Software Foundation; either version 3, or (at your option)
00010  * any later version.
00011  * 
00012  * GNU Radio is distributed in the hope that it will be useful,
00013  * but WITHOUT ANY WARRANTY; without even the implied warranty of
00014  * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
00015  * GNU General Public License for more details.
00016  * 
00017  * You should have received a copy of the GNU General Public License along
00018  * with this program; if not, write to the Free Software Foundation, Inc.,
00019  * 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA.
00020  */
00021 #ifndef INCLUDED_GR_SPTR_MAGIC_H
00022 #define INCLUDED_GR_SPTR_MAGIC_H
00023 
00024 #include <gr_core_api.h>
00025 #include <boost/shared_ptr.hpp>
00026 
00027 class gr_basic_block;
00028 class gr_hier_block2;
00029 
00030 namespace gnuradio {
00031 
00032   namespace detail {
00033     
00034     class GR_CORE_API sptr_magic {
00035     public:
00036       static boost::shared_ptr<gr_basic_block> fetch_initial_sptr(gr_basic_block *p);
00037       static void create_and_stash_initial_sptr(gr_hier_block2 *p);
00038     };
00039   };
00040 
00041   /* 
00042    * \brief New!  Improved!  Standard method to get/create the boost::shared_ptr for a block.
00043    */
00044   template<class T>
00045   boost::shared_ptr<T>
00046   get_initial_sptr(T *p)
00047   {
00048     return boost::dynamic_pointer_cast<T, gr_basic_block>(detail::sptr_magic::fetch_initial_sptr(p));
00049   }
00050 };
00051 
00052 #endif /* INCLUDED_GR_SPTR_MAGIC_H */