GNU Radio 3.7.1 C++ API
sptr_magic.h
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00001 /* -*- c++ -*- */
00002 /*
00003  * Copyright 2008,2013 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 
00022 #ifndef INCLUDED_GR_RUNTIME_SPTR_MAGIC_H
00023 #define INCLUDED_GR_RUNTIME_SPTR_MAGIC_H
00024 
00025 #include <gnuradio/api.h>
00026 #include <boost/shared_ptr.hpp>
00027 
00028 namespace gr {
00029   class basic_block;
00030   class hier_block2;
00031 }
00032 
00033 namespace gnuradio {
00034   namespace detail {
00035 
00036     class GR_RUNTIME_API sptr_magic
00037     {
00038     public:
00039       static boost::shared_ptr<gr::basic_block> fetch_initial_sptr(gr::basic_block *p);
00040       static void create_and_stash_initial_sptr(gr::hier_block2 *p);
00041     };
00042   };
00043 
00044   /*
00045    * \brief New!  Improved!  Standard method to get/create the
00046    * boost::shared_ptr for a block.
00047    */
00048   template<class T>
00049   boost::shared_ptr<T>
00050   get_initial_sptr(T *p)
00051   {
00052     return boost::dynamic_pointer_cast<T, gr::basic_block>
00053       (detail::sptr_magic::fetch_initial_sptr(p));
00054   }
00055 }
00056 
00057 #endif /* INCLUDED_GR_RUNTIME_SPTR_MAGIC_H */