00001 // Filename: recentConnectionReader.h 00002 // Created by: drose (23Jun00) 00003 // 00004 //////////////////////////////////////////////////////////////////// 00005 // 00006 // PANDA 3D SOFTWARE 00007 // Copyright (c) Carnegie Mellon University. All rights reserved. 00008 // 00009 // All use of this software is subject to the terms of the revised BSD 00010 // license. You should have received a copy of this license along 00011 // with this source code in a file named "LICENSE." 00012 // 00013 //////////////////////////////////////////////////////////////////// 00014 00015 #ifndef RECENTCONNECTIONREADER_H 00016 #define RECENTCONNECTIONREADER_H 00017 00018 #include "pandabase.h" 00019 00020 #include "connectionReader.h" 00021 #include "netDatagram.h" 00022 #include "lightMutex.h" 00023 00024 //////////////////////////////////////////////////////////////////// 00025 // Class : RecentConnectionReader 00026 // Description : This flavor of ConnectionReader will read from its 00027 // sockets and retain only the single most recent 00028 // datagram for inspection by client code. It's useful 00029 // particularly for reading telemetry-type data from UDP 00030 // sockets where you don't care about getting every last 00031 // socket, and in fact if the sockets are coming too 00032 // fast you'd prefer to skip some of them. 00033 // 00034 // This class will always create one thread for itself. 00035 //////////////////////////////////////////////////////////////////// 00036 class EXPCL_PANDA_NET RecentConnectionReader : public ConnectionReader { 00037 PUBLISHED: 00038 RecentConnectionReader(ConnectionManager *manager); 00039 virtual ~RecentConnectionReader(); 00040 00041 bool data_available(); 00042 bool get_data(NetDatagram &result); 00043 bool get_data(Datagram &result); 00044 00045 protected: 00046 virtual void receive_datagram(const NetDatagram &datagram); 00047 00048 private: 00049 bool _available; 00050 Datagram _datagram; 00051 LightMutex _mutex; 00052 }; 00053 00054 #endif 00055