vbs_fs/evlbidebug.h

// macros for debugging
// Copyright (C) 2007-2008 Harro Verkouter
//
// This program is free software: you can redistribute it and/or modify
// it under the terms of the GNU General Public License as published by
// the Free Software Foundation, either version 3 of the License, or
// any later version.
// 
// 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, see <http://www.gnu.org/licenses/>.
// 
// Author:  Harro Verkouter - verkouter@jive.nl
//          Joint Institute for VLBI in Europe
//          P.O. Box 2
//          7990 AA Dwingeloo
#ifndef EVLBI5A_EVLBIDEBUG_H
#define EVLBI5A_EVLBIDEBUG_H

#include <iostream>
#include <sstream>
#include <time.h>
#include <sys/time.h>
#include <stdio.h>

#ifdef __GNUC__
#define EVDBG_FUNC "[" << __PRETTY_FUNCTION__ << "] "
#else
#define EVDBG_FUNC ""
#endif



int dbglev_fn( void );  // get current debuglevel
int dbglev_fn( int n ); // set current level to 'n', returns previous level

// functionname printing threshold:
// if dbglev()>fnthres() then the functionnames
// where the DEBUG() was issued from will be printed as well
//  [that is: if the __PRETTY_FUNCTION__ is available otherwise
//   it has no effect]
int fnthres_fn( void ); // get current threshold value
int fnthres_fn( int n );  // set current threshold value, returns previous level

void do_cerr_lock( void );
void do_cerr_unlock( void );

// Prepare the debugstring in a local variable.
// We do that so the amount of time spent holding the lock
// is minimal.
// this printed the actual level of the message. taken that out
//            OsS_ZyP << a << " ";
#define DEBUG(a, b) \
    do {\
        if( a<=dbglev_fn() ) {\
            std::ostringstream OsS_ZyP;\
            char t1m3_buff3r[32];\
            struct timeval raw_t1m3;                                            \
            ::gettimeofday(&raw_t1m3, NULL);                                 \
            ::strftime( t1m3_buff3r, sizeof(t1m3_buff3r), "%Y-%m-%d %H:%M:%S", gmtime(&raw_t1m3.tv_sec) ); \
            ::sprintf( t1m3_buff3r + 19, ".%02ld: ", (long int)(raw_t1m3.tv_usec / 10000) ); \
            OsS_ZyP << t1m3_buff3r;\
            if( dbglev_fn()>fnthres_fn() ) \
                OsS_ZyP << EVDBG_FUNC; \
            OsS_ZyP << b;\
            do_cerr_lock();\
            std::cerr << OsS_ZyP.str();\
            do_cerr_unlock();\
        }\
    } while( 0 );



#endif