DDdebug.h

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#ifndef DDdebug_h
#define DDdebug_h

// Message logger.
#include "FWCore/MessageLogger/interface/MessageLogger.h"

 // If DDEBUG is defined, the debug macros DCOUT and DCOUT_V are active
 // Undefined DDEBUG redefines DCOUT and DCOUT_V to not to produce any code.
#define DDEBUG 
 
 #ifdef DDEBUG
  // Extended debug macros: DDEBUG(a,b) and DDEBUG_V(a,b) for extended verbosity
  // Both macros are kind of CPU intensive (calls to getenv, loop over a std::string)
  //
  // Usage: DEBUGOUT(char, std::ostream )
  //  char (i.e. 'P') defines the module which should produce debug-output
  //  At runtime the environment variables DDEBUG and  DDEBUG_V specify which
  //  module should activate its debug-output.
  //
  //  Example:
  //   file DDCore/src/a.cc: DCOUT('C',"Debuginfo of moule C" << i_ << j_ );
  //   file Parser/src/b.cc: DCOUT('P',"Parser debug");
  //   runtime: setenv DDEBUG P  > activates debug-output of a.cc
  //            setenv DDEBUG C  > activates debug-output of b.cc
  //            setenv DDEBUG PC > activated debug-output of a.cc and b.cc  
  

  #include <cstdlib>
  #include <iostream>
  #include <string>

 inline const char* ddDebug() {
  static const char* c = getenv("DDEBUG");
  return c;
}

 inline const char* ddDebugV() {
  static  const char* c = getenv("DDEBUG_V");
  return c;
}

inline const  std::string & ddDebugS() {
  static const std::string s(ddDebug()? ddDebug(): ""); 
  return s;
}

inline const  std::string & ddDebugVS() {
  static const std::string s(ddDebugV()? ddDebugV(): "");
  return s; 
}
     
      
  #define DCOUT(M_v_Y,M_v_S) { for(std::string::size_type M_v_i=0; M_v_i < ddDebugS().size(); ++M_v_i) if(ddDebugS()[M_v_i]==M_v_Y) LogDebug("DDdebug") << ddDebugS()[M_v_i] << " : " << M_v_S << std::endl; }   
  #define DCOUT_V(M_v_Y,M_v_S) { for(std::string::size_type M_v_i=0; M_v_i < ddDebugVS().size(); ++M_v_i) if(ddDebugVS()[M_v_i]==M_v_Y) LogDebug("DDdebug") << ddDebugVS()[M_v_i] << "v: " << M_v_S << std::endl; }         
  
  // backward compatiblility, don't use anymore! 
  #define DEBUGOUT(s) if (ddDebug()) { LogDebug("DDdebug") << s << std::endl; }
  #define DEBUGOUT_V(s) if (ddDebugV()) { LogDebug("DDdebug") << s << std::endl; }
 
 #else
  
  #define DCOUT(M_v_Y, M_v_s)
  #define DCOUT_V(M_v_Y, M_v_s)
  #define DEBUGOUT(s)
  #define DEBUGOUT_V(s)
 
 #endif

int DDmem();
int DDtime();

#endif