messages.h

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/* Copyright (C) 2000-2008 Stefan Buehler <sbuehler@ltu.se>
 
   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, 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 messages_h
#define messages_h
 
#include <iostream>
#include <fstream>
 
#include "arts.h"
#include "array.h"
#include "arts_omp.h"
 
 
class Verbosity {
public:
  Verbosity() : va(0), vs(1), vf(1), in_main_agenda(false) {}
  
  Verbosity(Index vagenda, Index vscreen, Index vfile)
  : va(vagenda), vs(vscreen), vf(vfile), in_main_agenda(false) {}
 
  bool valid() const
  { return (va>=0 && va<=3) && (vs>=0 && vs<=3) && (vf>=0 || vf<=3); }
  
  Index get_agenda_verbosity() const { return va; }
  Index get_screen_verbosity() const { return vs; }
  Index get_file_verbosity()   const { return vf; }
  bool  is_main_agenda()       const { return in_main_agenda; }
  
  void set_agenda_verbosity(Index v) { va = v; }
  void set_screen_verbosity(Index v) { vs = v; }
  void set_file_verbosity(Index v)   { vf = v; }
  void set_main_agenda(bool main_agenda) { in_main_agenda = main_agenda; }
 
  friend ostream& operator<<(ostream& os, const Verbosity& v);
private:
  Index va;
  Index vs;
  Index vf;
  bool in_main_agenda;
};
 
 
class ArtsOut {
public:
  ArtsOut (const int p, const Verbosity& v)
  : verbosity(v), priority(p) { }
  
  int get_priority () const { return priority; }
  const Verbosity& get_verbosity () const { return verbosity; }
  
 
  bool sufficient_priority_agenda() const
  {
    return verbosity.get_agenda_verbosity() >= priority;
  }
  
 
  bool sufficient_priority_screen() const
  {
    return verbosity.get_screen_verbosity() >= priority;
  }
  
 
  bool sufficient_priority_file() const
  {
    return verbosity.get_file_verbosity() >= priority;
  }
  
  bool in_main_agenda() const
  {
    return verbosity.is_main_agenda();
  }
  
private:
  Verbosity verbosity;
  int priority;
};
 
class ArtsOut0 : public ArtsOut {
public:
  ArtsOut0 (const Verbosity& v) : ArtsOut(0, v) { }
};
 
class ArtsOut1 : public ArtsOut {
public:
  ArtsOut1 (const Verbosity& v) : ArtsOut(1, v) { }
};
 
class ArtsOut2 : public ArtsOut {
public:
  ArtsOut2 (const Verbosity& v) : ArtsOut(2, v) { }
};
 
class ArtsOut3 : public ArtsOut {
public:
  ArtsOut3 (const Verbosity& v) : ArtsOut(3, v) { }
};
 
 
template<class T>
ArtsOut& operator<<(ArtsOut& aos, const T& t)
{
  extern ofstream report_file;
  
  // cout << "Printing object of type: " << typeid(t).name() << "\n";
  
  // If we are not in the main agenda, then the condition for agenda
  // output must be fulfilled in addition to the condition for
  // screen or file. 
  
  if (aos.in_main_agenda() || aos.sufficient_priority_agenda())
  {
    // We are marking the actual output operations as omp
    // critical, to somewhat reduce the mess when several threads
    // output simultaneously. 
    
    // This works well if the output operations themselves are
    // atomic, that is if a string is prepared beforehand and then
    // put to outx with a single << operation.
    
    if (aos.sufficient_priority_screen())
    {
#pragma omp critical
      {
        if (aos.get_priority() == 0)
          cerr << t;
        else
          cout << t;
      }
    }
    
    if (aos.sufficient_priority_file())
    {
#pragma omp critical
      {
        //    if (report_file)              // Check if report file is good
        report_file << t << flush;
        // The flush here is necessary to make the output really
        // appear in the report file. We are not producing a huge
        // amount of output to the report file, so I think the
        // performance penalty here is acceptable.
      }
    }
  }
 
  return aos;
}
 
#define CREATE_OUT0 ArtsOut0 out0(verbosity);
#define CREATE_OUT1 ArtsOut1 out1(verbosity);
#define CREATE_OUT2 ArtsOut2 out2(verbosity);
#define CREATE_OUT3 ArtsOut3 out3(verbosity);
 
#define CREATE_OUTS \
ArtsOut0 out0(verbosity); \
ArtsOut1 out1(verbosity); \
ArtsOut2 out2(verbosity); \
ArtsOut3 out3(verbosity);
 
#endif // messages_h