tora_neighbor.cc
上传用户:rrhhcc
上传日期:2015-12-11
资源大小:54129k
文件大小:3k
- /* -*- Mode:C++; c-basic-offset:8; tab-width:8; indent-tabs-mode:t -*- */
- /*
- * Copyright (c) 1997 Regents of the University of California.
- * All rights reserved.
- *
- * Redistribution and use in source and binary forms, with or without
- * modification, are permitted provided that the following conditions
- * are met:
- * 1. Redistributions of source code must retain the above copyright
- * notice, this list of conditions and the following disclaimer.
- * 2. Redistributions in binary form must reproduce the above copyright
- * notice, this list of conditions and the following disclaimer in the
- * documentation and/or other materials provided with the distribution.
- * 3. All advertising materials mentioning features or use of this software
- * must display the following acknowledgement:
- * This product includes software developed by the Computer Systems
- * Engineering Group at Lawrence Berkeley Laboratory.
- * 4. Neither the name of the University nor of the Laboratory may be used
- * to endorse or promote products derived from this software without
- * specific prior written permission.
- *
- * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND
- * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
- * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
- * ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
- * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
- * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
- * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
- * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
- * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
- * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
- * SUCH DAMAGE.
- */
- /* Ported from CMU/Monarch's code*/
- /*
- $Id: tora_neighbor.cc,v 1.2 1999/08/12 21:12:34 yaxu Exp $
- */
- #include <agent.h>
- #include <random.h>
- #include <trace.h>
- #include <ll.h>
- #include <priqueue.h>
- #include <tora/tora_packet.h>
- #include <tora/tora.h>
- #define CURRENT_TIME Scheduler::instance().clock()
- /* ======================================================================
- TORANeighbor Class Functions
- ====================================================================== */
- TORANeighbor::TORANeighbor(nsaddr_t id, Agent *a) : height(id)
- {
- index = id;
- lnk_stat = LINK_UN;
- time_act = Scheduler::instance().clock();
- agent = (toraAgent*) a;
- }
- void
- TORANeighbor::update_link_status(Height *h)
- {
- #ifdef LOGGING
- int t = lnk_stat;
- #endif
- if(height.isNull())
- lnk_stat = LINK_UN;
- else if(h->isNull())
- lnk_stat = LINK_DN;
- else if(height.compare(h) > 0)
- lnk_stat = LINK_DN;
- else if(height.compare(h) < 0)
- lnk_stat = LINK_UP;
- #ifdef LOGGING
- if(t != lnk_stat) {
- agent->log_nb_state_change(this);
- }
- #endif
- }
- void
- TORANeighbor::dump()
- {
- fprintf(stdout, "ttNEIG: %d, Link Status: %d, Time Active: %fn",
- index, lnk_stat, time_act);
- fprintf(stdout, "ttttau: %f, oid: %d, r: %d, delta: %d, id: %dn",
- height.tau, height.oid, height.r, height.delta, height.id);
- }