source: trunk/IPs/systemC/hierarchy_memory/tty/tty.h @ 49

#ifndef TTY_H
#define TTY_H
#include <fcntl.h>
#include <stdarg.h>
#include <stdio.h>

#include <unistd.h>
#include <signal.h>
#include <stdint.h>
#include <iostream>
#include "xtty.h"

using namespace std;

namespace hierarchy_memory {
namespace tty          {

  class param_t
  {
  public : char   * name;
  public : uint32_t nb_tty;
  public : char  ** name_tty;
  public : bool     with_xtty;

  public : param_t () {};

  public : param_t (char   * name    ,
                    uint32_t nb_tty  ,
                    char  ** name_tty,
                    bool     with_xtty)
    {
      this->name     = name;
      this->nb_tty   = nb_tty;
      this->name_tty = name_tty;
      this->with_xtty = with_xtty;
    }
  };

  class Tty
  {
  private   : char           * name;
  protected : const uint32_t   nb_tty;
  private   : const bool       with_xtty;
  private   : xtty_t         * xtty;

  public : Tty (param_t param):
    nb_tty    (param.nb_tty),
    with_xtty  (param.with_xtty)
    {
      uint32_t size_name = strlen(param.name)+1;
      name = new char [size_name];
      strncpy(name,param.name,size_name);

      xtty = new xtty_t [nb_tty];

      for (uint32_t i = 0; i < nb_tty; i++)
        {
          // ***** Create a log_file *****
          xtty [i].log_file = fopen(param.name_tty[i],"w");

          if (xtty [i].log_file == NULL)
            {
              // Error
              cerr << "<Tty> Can't open the file : \"" << param.name_tty[i] << "\"" << endl;
              exit(1);
            }

          if (with_xtty == true)
            {
              // ***** TTY and pipe init *****
              canal canal_output;
              
              if (pipe (canal_output.CanalPipe) != 0)
                {
                  cerr << "<Tty> Error in pipe creation" << endl;
                  exit(1);
                }
              
              if ((xtty[i].pid = fork()) == 0)
                {
                  // Childen -> transform in a xtty
                  close(0);
                  dup (canal_output.CanalPipe [0]);
                  close(1);
                  execlp("xtty","xtty", param.name_tty [i] ,NULL); // devient un tty
                  
                  cerr << "<Tty> Error in the creation of tty" << endl;
                  exit (1);
                }
              else
                {
                  // father
                  xtty[i].pipe_output = canal_output.CanalPipe [1];
                }
            }
        }//end for
    }

  public : ~Tty ()
    {
      // Kill all tty
      for (unsigned int i=0; i<nb_tty; i++)
      {
        if (with_xtty == true)
          if (xtty[i].pid)
            kill(xtty[i].pid,SIGTERM);
        fclose(xtty[i].log_file);
      }

    }
  public : void reset ()
    {
    }

    //*****[ write ]*****
  public : bool write (uint32_t num_tty, char data)
    {
      if (num_tty >= nb_tty)
        return false;
      char write_data = data;

      if (with_xtty == true)
        ::write (xtty[num_tty].pipe_output, &write_data, 1);
      fputc (data, xtty[num_tty].log_file);

      return true;
    }

    public    : friend ostream& operator<< (ostream& output_stream, const Tty & x)
      {
        output_stream << "<" << x.name << ">" << endl;
        output_stream << " * nb_tty        : " << x.nb_tty      << endl;

        return output_stream;
      };
  };

};}; //end namespace
#endif //!TTY_H