00001 00002 /* 00003 * requesttable.h 00004 * Copyright (C) 2000 by the University of Southern California 00005 * $Id: requesttable.h,v 1.4 2005/08/25 18:58:05 johnh Exp $ 00006 * 00007 * This program is free software; you can redistribute it and/or 00008 * modify it under the terms of the GNU General Public License, 00009 * version 2, as published by the Free Software Foundation. 00010 * 00011 * This program is distributed in the hope that it will be useful, 00012 * but WITHOUT ANY WARRANTY; without even the implied warranty of 00013 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the 00014 * GNU General Public License for more details. 00015 * 00016 * You should have received a copy of the GNU General Public License along 00017 * with this program; if not, write to the Free Software Foundation, Inc., 00018 * 59 Temple Place, Suite 330, Boston, MA 02111-1307, USA. 00019 * 00020 * 00021 * The copyright of this module includes the following 00022 * linking-with-specific-other-licenses addition: 00023 * 00024 * In addition, as a special exception, the copyright holders of 00025 * this module give you permission to combine (via static or 00026 * dynamic linking) this module with free software programs or 00027 * libraries that are released under the GNU LGPL and with code 00028 * included in the standard release of ns-2 under the Apache 2.0 00029 * license or under otherwise-compatible licenses with advertising 00030 * requirements (or modified versions of such code, with unchanged 00031 * license). You may copy and distribute such a system following the 00032 * terms of the GNU GPL for this module and the licenses of the 00033 * other code concerned, provided that you include the source code of 00034 * that other code when and as the GNU GPL requires distribution of 00035 * source code. 00036 * 00037 * Note that people who make modified versions of this module 00038 * are not obligated to grant this special exception for their 00039 * modified versions; it is their choice whether to do so. The GNU 00040 * General Public License gives permission to release a modified 00041 * version without this exception; this exception also makes it 00042 * possible to release a modified version which carries forward this 00043 * exception. 00044 * 00045 */ 00046 00047 // Other copyrights might apply to parts of this software and are so 00048 // noted when applicable. 00049 // 00050 // Ported from CMU/Monarch's code, appropriate copyright applies. 00051 00052 /* -*- c++ -*- 00053 requesttable.h 00054 00055 implement a table to keep track of the most current request 00056 number we've heard from a node in terms of that node's id 00057 00058 implemented as a circular buffer 00059 00060 */ 00061 00062 #ifndef _requesttable_h 00063 #define _requesttable_h 00064 00065 #include "path.h" 00066 00067 struct Entry; 00068 00069 enum LastType { LIMIT0, UNLIMIT}; 00070 00071 class RequestTable { 00072 public: 00073 RequestTable(int size = 30); 00074 ~RequestTable(); 00075 void insert(const ID& net_id, int req_num); 00076 void insert(const ID& net_id, const ID& MAC_id, int req_num); 00077 int get(const ID& id) const; 00078 // rtns 0 if id not found 00079 Entry* getEntry(const ID& id); 00080 private: 00081 Entry *table; 00082 int size; 00083 int ptr; 00084 int find(const ID& net_id, const ID& MAC_id ) const; 00085 }; 00086 00087 struct Entry { 00088 ID MAC_id; 00089 ID net_id; 00090 int req_num; 00091 Time last_arp; 00092 int rt_reqs_outstanding; 00093 Time last_rt_req; 00094 LastType last_type; 00095 }; 00096 00097 #endif //_requesttable_h
1.7.1