eoctrlccontinue.h

来自「这是linux下的进化计算的源代码。 === === === === ==」· C头文件 代码 · 共 77 行

// -*- mode: c++; c-indent-level: 4; c++-member-init-indent: 8; comment-column: 35; -*-
 
//-----------------------------------------------------------------------------
// eoCtrlCContinue.h
// (c) EEAAX 1996 - GeNeura Team, 1998 - Maarten Keijzer 2000 
/*
    This library is free software; you can redistribute it and/or
    modify it under the terms of the GNU Lesser General Public
    License as published by the Free Software Foundation; either
    version 2 of the License, or (at your option) any later version.
 
    This library 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
    Lesser General Public License for more details.
 
    You should have received a copy of the GNU Lesser General Public
    License along with this library; if not, write to the Free Software
    Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA  02111-1307  USA
 
    Contact: [e-mail], http://geneura.ugr.es
             [e-mail]
             [e-mail]
*/
//-----------------------------------------------------------------------------
// the same thing can probably be done in MS environement, but I hoave no way
// to test it so at the moment it is commented out when in MSVC
#ifndef _MSC_VER

#ifndef eoCtrlCContinue_h
#define eoCtrlCContinue_h

#include <signal.h>
#include <eoContinue.h>

extern bool arret_demande, existCtrlCContinue;

extern void signal_handler( int sig );


/**
    Ctrl C handling: this eoContinue tells whether the user pressed Ctrl C
*/
template< class EOT>
class eoCtrlCContinue: public eoContinue<EOT>
{
public:
 
  /// Ctor : installs the signal handler
  eoCtrlCContinue()
  {
    // First checks that no other eoCtrlCContinue does exist
    if (existCtrlCContinue)
      throw std::runtime_error("A signal handler for Ctrl C is already defined!\n");
    signal( SIGINT, signal_handler );
    signal( SIGQUIT, signal_handler );
    existCtrlCContinue = true;
  }
 
  /** Returns false when Ctrl C has been typed in
         * reached */
  virtual bool operator() ( const eoPop<EOT>& _vEO ) 
  {
    if (arret_demande)
      return false;
    return true;
  }

  virtual std::string className(void) const { return "eoCtrlCContinue"; }
};


#endif

#endif
 // of MSVC comment-out