class_registry.h

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00001 /* -*- c++ -*- */
00002 /*
00003  * Copyright 2007,2008 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_MB_CLASS_REGISTRY_H
00022 #define INCLUDED_MB_CLASS_REGISTRY_H
00023 
00024 #include <mblock/common.h>
00025 
00026 //! conceptually, pointer to constructor
00027 typedef mb_mblock_sptr (*mb_mblock_maker_t)(mb_runtime *runtime,
00028                                             const std::string &instance_name,
00029                                             pmt_t user_arg);
00030 
00031 /*
00032  * \brief Maintain mapping between mblock class_name and factory (maker)
00033  */
00034 class mb_class_registry : public boost::noncopyable {
00035 public:
00036   static bool register_maker(const std::string &name, mb_mblock_maker_t maker);
00037   static bool lookup_maker(const std::string &name, mb_mblock_maker_t *maker);
00038 };
00039 
00040 template<class mblock>
00041 mb_mblock_sptr mb_mblock_maker(mb_runtime *runtime,
00042                                const std::string &instance_name,
00043                                pmt_t user_arg)
00044 {
00045   return mb_mblock_sptr(new mblock(runtime, instance_name, user_arg));
00046 }
00047 
00048 #define REGISTER_MBLOCK_CLASS(name) \
00049   bool __RBC__ ## name = mb_class_registry::register_maker(#name, &mb_mblock_maker<name>)
00050 
00051 #endif /* INCLUDED_MB_CLASS_REGISTRY_H */

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