//  $Id: trace.hh,v 1.2 2001/02/21 11:06:45 engin Exp $
//
//  Copyright (c) 1994 by the University of Southern California
//  All rights reserved.
//
//  Permission to use, copy, modify, and distribute this software and its
//  documentation in source and binary forms for lawful non-commercial
//  purposes and without fee is hereby granted, provided that the above
//  copyright notice appear in all copies and that both the copyright
//  notice and this permission notice appear in supporting documentation,
//  and that any documentation, advertising materials, and other materials
//  related to such distribution and use acknowledge that the software was
//  developed by the University of Southern California, Information
//  Sciences Institute. The name of the USC may not be used to endorse or
//  promote products derived from this software without specific prior
//  written permission.
//
//  THE UNIVERSITY OF SOUTHERN CALIFORNIA DOES NOT MAKE ANY
//  REPRESENTATIONS ABOUT THE SUITABILITY OF THIS SOFTWARE FOR ANY
//  PURPOSE.  THIS SOFTWARE IS PROVIDED "AS IS" AND WITHOUT ANY EXPRESS OR
//  IMPLIED WARRANTIES, INCLUDING, WITHOUT LIMITATION, THE IMPLIED
//  WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE,
//  TITLE, AND NON-INFRINGEMENT.
//
//  IN NO EVENT SHALL USC, OR ANY OTHER CONTRIBUTOR BE LIABLE FOR ANY
//  SPECIAL, INDIRECT OR CONSEQUENTIAL DAMAGES, WHETHER IN CONTRACT, TORT,
//  OR OTHER FORM OF ACTION, ARISING OUT OF OR IN CONNECTION WITH, THE USE
//  OR PERFORMANCE OF THIS SOFTWARE.
//
//  Questions concerning this software should be directed to 
//  ratoolset@isi.edu.
//
//  Author(s): Cengiz Alaettinoglu <cengiz@ISI.EDU>

#ifndef TRACE_H
#define TRACE_H

#include "config.h"
#include <iostream.h>

#define TR_MAX                   (sizeof(long int) * 8 -1)

#define TR_ALL                   0
#define TR_WHOIS_QUERY           1
#define TR_WHOIS_RESPONSE        2
#define TR_INPUT                 3

#define Trace(level) if (trace.enabledp(level)) clog

class Tracer {
private:
   Tracer(Tracer& a) {} // private so no temporaries for Tracer
public:
   Tracer();
   void Tracer::enable(int level);
   void Tracer::disable(int level);
   int  Tracer::enabledp(int level);
   void Tracer::enable(char *tracename);
   void Tracer::disable(char *tracename);
   int  Tracer::enabledp(char *tracename);

private:
   long int enabled;
   static char *tracenames[TR_MAX];
   inline int tindex(char *tracename);
};

extern Tracer trace;

#endif /* TRACE_H */
