safe_roller.h

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#ifndef SAFE_ROLLER_CLASS
#define SAFE_ROLLER_CLASS

/*****************************************************************************\
*                                                                             *
*  Name   : safe_roller                                                       *
*  Author : Chris Koeritz                                                     *
*                                                                             *
*******************************************************************************
* Copyright (c) 1998-$now By Author.  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 is online at:      *
*     http://www.fsf.org/copyleft/gpl.html                                    *
* Please send any updates to: fred@gruntose.com                               *
\*****************************************************************************/

#include "mechanisms_dll.h"

// forward.
class int_roller;


class MECHANISMS_CLASS_STYLE safe_roller
{
public:
  safe_roller(int start_of_range = 0, int end_of_range = MAXINT);

  ~safe_roller();

  int next_id();

  int current() const;

  void set_current(int new_current);

private:
  int_roller *_rolling;  
  mutex *_lock;  

  // forbidden...
  safe_roller(const safe_roller &);
  safe_roller &operator =(const safe_roller &);
};


void MECHANISMS_FUNCTION_STYLE safe_add(int &to_change, int addition);

#endif

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