00001 /* -*- Mode:C++; c-basic-offset:8; tab-width:8; indent-tabs-mode:t -*- */ 00002 00003 /* 00004 * Copyright (C) 1999 by the University of Southern California 00005 * $Id: fsm.h,v 1.4 2005/08/25 18:58:02 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 /* 00048 * Contributed by Polly Huang (USC/ISI), http://www-scf.usc.edu/~bhuang 00049 * 00050 * @(#) $Header: /cvsroot/nsnam/ns-2/common/fsm.h,v 1.4 2005/08/25 18:58:02 johnh Exp $ (LBL) 00051 */ 00052 00053 #include "scheduler.h" 00054 00055 #define RTT 1 00056 #define TIMEOUT 2 00057 00058 class FSMState { 00059 protected: 00060 friend class FSM; 00061 void number_all(); 00062 void print_all(int level); 00063 void print_all_stats(int desired_pkts, int pkts = 0, 00064 int rtts = 0, int timeouts = 0, 00065 int ps = 0, int qs = 0, 00066 int num_states = 0, 00067 int num_state_names = 0); 00068 void reset_all_processed(); 00069 bool processed() { return print_i_ < 0; } 00070 public: 00071 FSMState() : print_i_(0) {}; 00072 /* number of packets in this batch of transmission */ 00073 int batch_size_; 00074 /* time to make transition from previous state to this one 00075 * (either RTT or TIMEOUT) */ 00076 int transition_[17]; 00077 /* next states if dropping packet #1-16, 0 for none */ 00078 FSMState* drop_[17]; 00079 int print_i_; // printing index (processed if negative) 00080 }; 00081 00082 00083 class FSM : public TclObject { 00084 public: 00085 FSM() {}; 00086 inline FSMState* start_state() { // starting state 00087 return (start_state_); 00088 } 00089 static FSM& instance() { 00090 return (*instance_); // general access to scheduler 00091 } 00092 static void print_FSM(FSMState* state); 00093 static void print_FSM_stats(FSMState* state, int n); 00094 protected: 00095 FSMState* start_state_; 00096 static FSM* instance_; 00097 }; 00098 00099 00100 00101 class TahoeAckFSM : public FSM { 00102 public: 00103 TahoeAckFSM(); 00104 inline FSMState* start_state() { // starting state 00105 return (start_state_); 00106 } 00107 static TahoeAckFSM& instance() { 00108 return (*instance_); // general access to TahoeAckFSM 00109 } 00110 protected: 00111 FSMState* start_state_; 00112 static TahoeAckFSM* instance_; 00113 00114 }; 00115 00116 class RenoAckFSM : public FSM { 00117 public: 00118 RenoAckFSM(); 00119 inline FSMState* start_state() { // starting state 00120 return (start_state_); 00121 } 00122 static RenoAckFSM& instance() { 00123 return (*instance_); // general access to TahoeAckFSM 00124 } 00125 protected: 00126 FSMState* start_state_; 00127 static RenoAckFSM* instance_; 00128 }; 00129 00130 00131 class TahoeDelAckFSM : public FSM { 00132 public: 00133 TahoeDelAckFSM(); 00134 inline FSMState* start_state() { // starting state 00135 return (start_state_); 00136 } 00137 static TahoeDelAckFSM& instance() { 00138 return (*instance_); // general access to TahoeAckFSM 00139 } 00140 protected: 00141 FSMState* start_state_; 00142 static TahoeDelAckFSM* instance_; 00143 }; 00144 00145 class RenoDelAckFSM : public FSM { 00146 public: 00147 RenoDelAckFSM(); 00148 inline FSMState* start_state() { // starting state 00149 return (start_state_); 00150 } 00151 static RenoDelAckFSM& instance() { 00152 return (*instance_); // general access to TahoeAckFSM 00153 } 00154 protected: 00155 FSMState* start_state_; 00156 static RenoDelAckFSM* instance_; 00157 };