timing.h

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/*
Simple helper macros to time blocks or statements.
 
Copyright (C) 2007 Frank Richter
 
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 2
of the License, or (at your option) 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, write to the Free Software
Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA  02111-1307, USA.
 
*/
 
#ifndef __TIMING_H__
#define __TIMING_H__
 
#if defined(DO_TIMING)
 
#define TIMING_BEGIN    double _timing_end_, _timing_start_ = Sys_DirtyTime();
#define TIMING_END_STR(S)       \
  _timing_end_ = Sys_DirtyTime();   \
  Con_Printf ("%s: %.3g s\n", S, _timing_end_ - _timing_start_);
#define TIMING_END  TIMING_END_STR(__FUNCTION__)
 
#define TIMING_INTERMEDIATE(S)                      \
  {                                 \
    double currentTime = Sys_DirtyTime();               \
    Con_Printf ("%s: %.3g s\n", S, currentTime - _timing_start_);   \
  }
  
#define TIMING_TIMESTATEMENT(Stmt)  \
  {                 \
    TIMING_BEGIN            \
    Stmt;               \
    TIMING_END_STR(#Stmt);      \
  }
 
#else
 
#define TIMING_BEGIN
#define TIMING_END_STR(S)
#define TIMING_END
#define TIMING_INTERMEDIATE(S)
#define TIMING_TIMESTATEMENT(Stmt)  Stmt
 
#endif
 
#endif // __TIMING_H__