dataserver.h

00001 /***************************************************************************
00002 *   Copyright (C) 2001 by Rick L. Vinyard, Jr.                            *
00003 *   rvinyard@cs.nmsu.edu                                                  *
00004 *                                                                         *
00005 *   This program is free software; you can redistribute it and/or modify  *
00006 *   it under the terms of the GNU Lesser General Public License as        *
00007 *   published by the Free Software Foundation version 2.1.                *
00008 *                                                                         *
00009 *   This program is distributed in the hope that it will be useful,       *
00010 *   but WITHOUT ANY WARRANTY; without even the implied warranty of        *
00011 *   MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the         *
00012 *   GNU General Public License for more details.                          *
00013 *                                                                         *
00014 *   You should have received a copy of the GNU Lesser General Public      *
00015 *   License along with this library; if not, write to the                 *
00016 *   Free Software Foundation, Inc.,                                       *
00017 *   51 Franklin St, Fifth Floor, Boston, MA  02110-1301  USA              *
00018 ***************************************************************************/
00019 #ifndef CONEXUSDATASERVER_H
00020 #define CONEXUSDATASERVER_H
00021 
00022 #include <set>
00023 #include <queue>
00024 
00025 #include <sys/select.h>
00026 #include <pthread.h>
00027 
00028 #include <glibmm/dispatcher.h>
00029 #include <glibmm/thread.h>
00030 
00031 #include <conexus/object.h>
00032 #include <conexus/data.h>
00033 
00034 namespace Conexus {
00035 
00036   typedef enum ReadWrite {
00037     READ = 0x01,
00038     WRITE = 0x02,
00039     READWRITE = 0x03
00040   } ReadWrite;
00041 
00045   class DataServer : public Object {
00046     public:
00047       DataServer();
00048 
00049       virtual ~DataServer();
00050 
00051       virtual void start( ReadWrite rw = READ, bool use_dispatcher = false );
00052       virtual void stop( ReadWrite rw = READ );
00053 
00054       sigc::signal<void, Data> signal_data();
00055       sigc::signal<void, CData> signal_cdata();
00056 
00057       sigc::signal<void, size_t> signal_data_received();
00058       sigc::signal<void, size_t> signal_data_transmitted();
00059 
00060       virtual bool is_running();
00061       virtual bool is_read_running();
00062       virtual bool is_write_running();
00063 
00064       virtual const std::string& object_type() { static std::string s("Conexus::DataServer"); return s; }
00065 
00066     protected:
00067       bool m_running[ 2 ];
00068       pthread_t m_thread[ 2 ];
00069       pthread_attr_t m_thread_attr[ 2 ];
00070 
00071       pthread_mutex_t m_mutex_queue[ 2 ];
00072       pthread_mutex_t m_mutex_can_stop[ 2 ];
00073       pthread_mutex_t m_mutex_can_start[ 2 ];
00074 
00075       Glib::Dispatcher* m_dispatcher;
00076       bool m_use_dispatcher;
00077       sigc::connection m_dispatcher_connection;
00078 
00079       sigc::signal<void, Data> m_signal_data;
00080       sigc::signal<void, CData> m_signal_cdata;
00081       sigc::signal<void, size_t> m_signal_data_received;
00082       sigc::signal<void, size_t> m_signal_data_transmitted;
00083       std::queue<Data> m_read_queue;
00084       std::queue<Data> m_write_queue;
00085 
00086       virtual void read_thread_main();
00087       virtual void read_thread_cleanup();
00088       virtual void write_thread_main();
00089       virtual void write_thread_cleanup();
00090 
00091       void queue_received_data( Data d );
00092       void queue_write_data( Data d );
00093       void emit_received_data( );
00094 
00095     private:
00096       static void* read_thread_main_static( void* );
00097       static void* write_thread_main_static( void* );
00098 
00099   };
00100 
00101 }
00102 
00103 #endif

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