delay.h

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/* -*-  Mode:C++; c-basic-offset:8; tab-width:8; indent-tabs-mode:t -*- */
/*
 * Copyright (c) 1996-1997 The Regents of the University of California.
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 *      This product includes software developed by the Network Research
 *      Group at Lawrence Berkeley National Laboratory.
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 * @(#) $Header: /nfs/jade/vint/CVSROOT/ns-2/link/delay.h,v 1.14 1998/11/02 01:03:33 yuriy Exp $ (LBL)
 */

#ifndef ns_delay_h
#define ns_delay_h

#include <assert.h>

#include "packet.h"
#include "queue.h"
#include "ip.h"
#include "connector.h"

class LinkDelay : public Connector {
 public:
        LinkDelay();
        void recv(Packet* p, Handler*);
        void send(Packet* p, Handler*);
        void handle(Event* e);
        double delay() { return delay_; }
        inline double txtime(Packet* p) {
                return (8. * hdr_cmn::access(p)->size() / bandwidth_);
        }
        double bandwidth() const { return bandwidth_; }
        void pktintran(int src, int group);
 protected:
        int command(int argc, const char*const* argv);
        void reset();
        double bandwidth_;      /* bandwidth of underlying link (bits/sec) */
        double delay_;          /* line latency */
        Event intr_;
        int dynamic_;           /* indicates whether or not link is ~ */

        PacketQueue* itq_;
        int total_[4];
};

#endif

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