00001 /* -*- Mode:C++; c-basic-offset:8; tab-width:8; indent-tabs-mode:t -*- */ 00002 /* 00003 * Copyright (c) 1997 Regents of the University of California. 00004 * All rights reserved. 00005 * 00006 * Redistribution and use in source and binary forms, with or without 00007 * modification, are permitted provided that the following conditions 00008 * are met: 00009 * 1. Redistributions of source code must retain the above copyright 00010 * notice, this list of conditions and the following disclaimer. 00011 * 2. Redistributions in binary form must reproduce the above copyright 00012 * notice, this list of conditions and the following disclaimer in the 00013 * documentation and/or other materials provided with the distribution. 00014 * 3. All advertising materials mentioning features or use of this software 00015 * must display the following acknowledgement: 00016 * This product includes software developed by the Computer Systems 00017 * Engineering Group at Lawrence Berkeley Laboratory. 00018 * 4. Neither the name of the University nor of the Laboratory may be used 00019 * to endorse or promote products derived from this software without 00020 * specific prior written permission. 00021 * 00022 * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND 00023 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE 00024 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE 00025 * ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE 00026 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL 00027 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS 00028 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) 00029 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT 00030 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY 00031 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF 00032 * SUCH DAMAGE. 00033 */ 00034 /* Ported from CMU/Monarch's code*/ 00035 00036 /* 00037 $Id: tora_neighbor.cc,v 1.2 1999/08/12 21:12:34 yaxu Exp $ 00038 */ 00039 00040 #include <agent.h> 00041 #include <random.h> 00042 #include <trace.h> 00043 00044 #include <ll.h> 00045 #include <priqueue.h> 00046 #include <tora/tora_packet.h> 00047 #include <tora/tora.h> 00048 00049 #define CURRENT_TIME Scheduler::instance().clock() 00050 00051 /* ====================================================================== 00052 TORANeighbor Class Functions 00053 ====================================================================== */ 00054 TORANeighbor::TORANeighbor(nsaddr_t id, Agent *a) : height(id) 00055 { 00056 index = id; 00057 lnk_stat = LINK_UN; 00058 time_act = Scheduler::instance().clock(); 00059 00060 agent = (toraAgent*) a; 00061 } 00062 00063 00064 void 00065 TORANeighbor::update_link_status(Height *h) 00066 { 00067 #ifdef LOGGING 00068 int t = lnk_stat; 00069 #endif 00070 if(height.isNull()) 00071 lnk_stat = LINK_UN; 00072 else if(h->isNull()) 00073 lnk_stat = LINK_DN; 00074 else if(height.compare(h) > 0) 00075 lnk_stat = LINK_DN; 00076 else if(height.compare(h) < 0) 00077 lnk_stat = LINK_UP; 00078 #ifdef LOGGING 00079 if(t != lnk_stat) { 00080 agent->log_nb_state_change(this); 00081 } 00082 #endif 00083 } 00084 00085 void 00086 TORANeighbor::dump() 00087 { 00088 fprintf(stdout, "\t\tNEIG: %d, Link Status: %d, Time Active: %f\n", 00089 index, lnk_stat, time_act); 00090 fprintf(stdout, "\t\t\ttau: %f, oid: %d, r: %d, delta: %d, id: %d\n", 00091 height.tau, height.oid, height.r, height.delta, height.id); 00092 } 00093
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