00001 00002 /*************************************************************************** 00003 * interface_proxy.h - BlackBoard interface proxy for RemoteBlackBoard 00004 * 00005 * Created: Tue Mar 04 10:52:28 2008 00006 * Copyright 2006-2008 Tim Niemueller [www.niemueller.de] 00007 * 00008 ****************************************************************************/ 00009 00010 /* This program is free software; you can redistribute it and/or modify 00011 * it under the terms of the GNU General Public License as published by 00012 * the Free Software Foundation; either version 2 of the License, or 00013 * (at your option) any later version. A runtime exception applies to 00014 * this software (see LICENSE.GPL_WRE file mentioned below for details). 00015 * 00016 * This program is distributed in the hope that it will be useful, 00017 * but WITHOUT ANY WARRANTY; without even the implied warranty of 00018 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the 00019 * GNU Library General Public License for more details. 00020 * 00021 * Read the full text in the LICENSE.GPL_WRE file in the doc directory. 00022 */ 00023 00024 #ifndef __BLACKBOARD_INTERFACE_PROXY_H 00025 #define __BLACKBOARD_INTERFACE_PROXY_H_ 00026 00027 #include <interface/mediators/interface_mediator.h> 00028 #include <interface/mediators/message_mediator.h> 00029 #include <cstdlib> 00030 00031 namespace fawkes { 00032 00033 class FawkesNetworkClient; 00034 class FawkesNetworkMessage; 00035 class RefCountRWLock; 00036 class BlackBoardNotifier; 00037 class Interface; 00038 00039 class BlackBoardInterfaceProxy 00040 : public InterfaceMediator, 00041 public MessageMediator 00042 { 00043 public: 00044 BlackBoardInterfaceProxy(FawkesNetworkClient *client, FawkesNetworkMessage *msg, 00045 BlackBoardNotifier *notifier, Interface *interface, 00046 bool readwrite); 00047 ~BlackBoardInterfaceProxy(); 00048 00049 void process_data_changed(FawkesNetworkMessage *msg); 00050 void process_interface_message(FawkesNetworkMessage *msg); 00051 void reader_added(unsigned int event_serial); 00052 void reader_removed(unsigned int event_serial); 00053 void writer_added(unsigned int event_serial); 00054 void writer_removed(unsigned int event_serial); 00055 00056 unsigned int serial() const; 00057 unsigned int clid() const; 00058 Interface * interface() const; 00059 00060 /* InterfaceMediator */ 00061 virtual bool exists_writer(const Interface *interface) const; 00062 virtual unsigned int num_readers(const Interface *interface) const; 00063 virtual void notify_of_data_change(const Interface *interface); 00064 00065 /* MessageMediator */ 00066 virtual void transmit(Message *message); 00067 00068 private: 00069 inline unsigned int next_msg_id() 00070 { 00071 return ((__instance_serial << 16) | __next_msg_id++); 00072 } 00073 00074 private: 00075 FawkesNetworkClient *__fnc; 00076 00077 RefCountRWLock *__rwlock; 00078 BlackBoardNotifier *__notifier; 00079 Interface *__interface; 00080 00081 void *__mem_chunk; 00082 void *__data_chunk; 00083 size_t __data_size; 00084 00085 unsigned short __instance_serial; 00086 unsigned short __next_msg_id; 00087 unsigned int __num_readers; 00088 bool __has_writer; 00089 unsigned int __clid; 00090 }; 00091 00092 } // end namespace fawkes 00093 00094 #endif