unique_id.h

来自「code that can compile NS-2.27 on Fedora 」· C头文件 代码 · 共 52 行

/*******************************************************************
 Copyright (C) 2004 Thomas Kunz, CRC Canada, BCAST for IPv4.
 DISTRIBUTED WITH NO WARRANTY, EXPRESS OR IMPLIED.
 See the GNU Library General Public License (file COPYING in the
 MANET_multicast directory) for conditions of use and redistribution.
*********************************************************************/

/*
 * Functions to manage unique message IDs. These are saved in a list
 * which gets temporarily purged (entries have associated timeout values).
 */

#ifndef _unique_id_
#define _unique_id_

#include "cmu-trace.h"

#define UNIQUE_ID_SAVE 100  

/*
  Unique ID Cache
*/

class UniqueIDHandler;

class UniqueID {
	friend class UniqueIDHandler;
 public:
        UniqueID(nsaddr_t i, u_int32_t b) { src = i; id = b;  }
 protected:
        LIST_ENTRY(UniqueID) link;
        nsaddr_t        src;
        u_int32_t       id;
        double          expire;         // now + UNIQUE_ID_SAVE s
};

LIST_HEAD(UID_cache, UniqueID);

class UniqueIDHandler : public Handler {
public:
        UniqueIDHandler() {LIST_INIT(&uids);}
        void    handle(Event*);
        void 	id_insert(nsaddr_t id, u_int32_t bid);
        bool 	id_lookup(nsaddr_t id, u_int32_t bid);
        void 	id_purge();
private:
        Event   intr;
        UID_cache uids;
};

#endif