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/*******************************************************************\ | 
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              Copyright (C) 2003 Joseph Coffland | 
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    This program is free software; you can redistribute it and/or | 
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     modify it under the terms of the GNU General Public License | 
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    as published by the Free Software Foundation; either version 2 | 
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        of the License, or (at your option) any later version. | 
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   This program is distributed in the hope that it will be useful, | 
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    but WITHOUT ANY WARRANTY; without even the implied warranty of | 
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    MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the | 
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             GNU General Public License for more details. | 
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  You should have received a copy of the GNU General Public License | 
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     along with this program; if not, write to the Free Software | 
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      Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA | 
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                           02111-1307, USA. | 
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            For information regarding this software email | 
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                   jcofflan@users.sourceforge.net | 
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\*******************************************************************/ | 
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#ifndef UTILS_COUNTER_H | 
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#define UTILS_COUNTER_H | 
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namespace OpenMD { | 
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  /**  | 
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   * This class is used by SmartPointer to count | 
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   * pointer references. | 
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   */ | 
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  class Counter { | 
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    long count; | 
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  public: | 
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    Counter(const Counter &counter) : count(counter.count) {} | 
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    Counter(const long initialCount) : count(initialCount) {} | 
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    Counter() : count(0) {} | 
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    /**  | 
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     * Increment. | 
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     */ | 
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    void inc() {count++;} | 
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    /**  | 
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     * Decrement. | 
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     *  | 
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     * @return true if count != 0, false otherwise | 
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     */   | 
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    bool dec() {count--; return count != 0;} | 
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    /**  | 
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     * Get the current count. | 
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     *  | 
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     * @return The count. | 
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     */ | 
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    long getCount() const {return count;} | 
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  }; | 
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} | 
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#endif |