acsncCircularQueue.h

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/*******************************************************************************
*    ALMA - Atacama Large Millimiter Array
*    (c) National Radio Astronomy Observatory, 2009
*    Copyright by NRAO (in the framework of the ALMA collaboration)
*    All rights reserved
*
*    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 2.1 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
*  
*
* "@(#) $Id:"
*/ 


#ifndef _NC_CIRCULAR_QUEUE_H_
#define _NC_CIRCULAR_QUEUE_H_

#include <deque>
#include <iostream>
#include <orbsvcs/CosNotificationC.h>

namespace nc{
   class CircularQueue{
      private:
         std::deque<CosNotification::StructuredEvent> queue;
         unsigned int length;
         unsigned int max_size;

     public:
         CircularQueue(unsigned int size = 100);

         ~CircularQueue();

         void push(CosNotification::StructuredEvent e);
         
         void clear();

         void pop();

         CosNotification::StructuredEvent *front();

         bool setMaxSize(unsigned int size);
         unsigned int getMaxSize() const;
         unsigned int size() { return queue.size(); }
   };

        class EventDroppedException: std::exception
        {
        };
}

#endif