/*
 * 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 MASH Research
 * 	Group at the University of California Berkeley.
 * 4. Neither the name of the University nor of the Research Group 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.
 *
 * @(#) $Header: /usr/src/mash/repository/vint/ns-2/trace.h,v 1.22 1998/10/06 21:58:23 yuriy Exp $
 */

#ifndef ns_trace_h
#define ns_trace_h

#define NAM_TRACE

#define NUMFLAGS 7

#include <math.h> // floor
#include "packet.h"
#include "connector.h"

class Trace : public Connector {
 protected:
        int type_;
        nsaddr_t src_;
        nsaddr_t dst_;
        Tcl_Channel channel_;
        int callback_;
#ifdef NAM_TRACE
	Tcl_Channel namChan_;
	char nwrk_ [256];
#endif
        char wrk_[256];
        void format(int tt, int s, int d, Packet* p);
        void annotate(const char* s);
	int show_tcphdr_;  // bool flags; backward compat
 public:
        Trace(int type);
        ~Trace();
        int command(int argc, const char*const* argv);
        void recv(Packet* p, Handler*);
	void trace(TracedVar*);
        void dump();
        inline char* buffer() { return (wrk_); }

	inline double round(double x) const { 
		// annoying way of tackling sprintf rounding platform 
		// differences :
		// use round(Scheduler::instance().clock()) instead of 
		// Scheduler::instance().clock().
		static const double PRECISION= 1.0e+6; //keep six digits after the decimal
		return (double)floor(x*PRECISION + 0.5)/PRECISION;
	}

#ifdef NAM_TRACE
	virtual void write_nam_trace(const char *s);
	void namdump();
#endif

#ifdef OFF_HDR
	int off_ip_;
	int off_tcp_;
	int off_rtp_;
	int off_srm_;
#endif
};

class DequeTrace : public Trace {
public:
	DequeTrace(int type) : Trace(type) {}
	~DequeTrace();

	void recv(Packet* p, Handler*);
};

#endif