routecache.h
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- /*
- * routecache.h
- * Copyright (C) 2000 by the University of Southern California
- * $Id: routecache.h,v 1.8 2006/02/21 15:20:18 mahrenho Exp $
- *
- * This program is free software; you can redistribute it and/or
- * modify it under the terms of the GNU General Public License,
- * version 2, as published by the Free Software Foundation.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
- * GNU General Public License for more details.
- *
- * You should have received a copy of the GNU General Public License along
- * with this program; if not, write to the Free Software Foundation, Inc.,
- * 59 Temple Place, Suite 330, Boston, MA 02111-1307, USA.
- *
- *
- * The copyright of this module includes the following
- * linking-with-specific-other-licenses addition:
- *
- * In addition, as a special exception, the copyright holders of
- * this module give you permission to combine (via static or
- * dynamic linking) this module with free software programs or
- * libraries that are released under the GNU LGPL and with code
- * included in the standard release of ns-2 under the Apache 2.0
- * license or under otherwise-compatible licenses with advertising
- * requirements (or modified versions of such code, with unchanged
- * license). You may copy and distribute such a system following the
- * terms of the GNU GPL for this module and the licenses of the
- * other code concerned, provided that you include the source code of
- * that other code when and as the GNU GPL requires distribution of
- * source code.
- *
- * Note that people who make modified versions of this module
- * are not obligated to grant this special exception for their
- * modified versions; it is their choice whether to do so. The GNU
- * General Public License gives permission to release a modified
- * version without this exception; this exception also makes it
- * possible to release a modified version which carries forward this
- * exception.
- *
- */
- // Other copyrights might apply to parts of this software and are so
- // noted when applicable.
- //
- // Ported from CMU/Monarch's code, appropriate copyright applies.
- /* -*- c++ -*-
- routecache.h
- Interface all route caches must support
- */
- #ifndef _routecache_h
- #define _routecache_h
- #include <cstdarg>
- #include <object.h>
- #include <trace.h>
- #include "path.h"
- #ifdef DSR_CACHE_STATS
- class RouteCache;
- #include <dsr/cache_stats.h>
- #endif
- class RouteCache : public TclObject {
- public:
- RouteCache();
- ~RouteCache();
- virtual void noticeDeadLink(const ID&from, const ID& to, Time t) = 0;
- // the link from->to isn't working anymore, purge routes containing
- // it from the cache
- virtual void noticeRouteUsed(const Path& route, Time t,
- const ID& who_from) = 0;
- // tell the cache about a route we saw being used
- // if first tested is set, then we assume the first link was recently
- // known to work
- virtual void addRoute(const Path& route, Time t, const ID& who_from) = 0;
- // add this route to the cache (presumably we did a route request
- // to find this route and don't want to lose it)
- virtual bool findRoute(ID dest, Path& route, int for_use) = 0;
- // if there is a cached path from us to dest returns true and fills in
- // the route accordingly. returns false otherwise
- // if for_use, then we assume that the node really wants to keep
- // the returned route
- virtual int command(int argc, const char*const* argv);
- void trace(char* fmt, ...);
- // *******************************************************
- int pre_addRoute(const Path& route, Path &rt,
- Time t, const ID& who_from);
- // returns 1 if the Route should be added to the cache, 0 otherwise.
- int pre_noticeRouteUsed(const Path& p, Path& stub,
- Time t, const ID& who_from);
- // returns 1 if the Route should be added to the cache, 0 otherwise.
- #ifdef DSR_CACHE_STATS
- MobiHandler mh;
- struct cache_stats stat;
- virtual void periodic_checkCache() = 0;
- int checkRoute_logall(Path *p, int action, int start);
- #endif
- //**********************************************************
- ID MAC_id, net_id;
- virtual void dump(FILE *out);
- protected:
- Trace *logtarget;
- };
- RouteCache * makeRouteCache();
- // return a ref to the route cache that should be used in this sim
- #endif // _routecache_h