OperationThreadManager.h

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/*  Copyright (C) 2008 National Institute For Space Research (INPE) - Brazil.
 
    This file is part of the TerraLib - a Framework for building GIS enabled applications.
 
    TerraLib 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 3 of the License,
    or (at your option) any later version.
 
    TerraLib 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 TerraLib. See COPYING. If not, write to
    TerraLib Team at <terralib-team@terralib.org>.
 */
 
 /*!
   \file terralin/vp/OperationThreadManager.h
 
   \brief This class represents a vector processing engine to help the processing of a large number of geometries by dividing it into smallers groups
 */
 
#ifndef __TERRALIB_VP_INTERNAL_OPERATIONTHREADMANAGER_H
#define __TERRALIB_VP_INTERNAL_OPERATIONTHREADMANAGER_H
 
#include "Config.h"
 
#include <memory>
#include <thread>
 
namespace te
{
  namespace common
  {
    class TaskProgress;
  }
 
  namespace vp
  {
    class AbstractDataHandler;
    class AbstractOperation;
    class OperationThreadManagerListener;
 
    class TEVPEXPORT OperationThreadManager
    {
      public:
        /*! \brief Default constructor. */
        OperationThreadManager(AbstractOperation* operation, AbstractDataHandler* dataHandler);
 
        /*! \brief Virtual destructor. */
        virtual ~OperationThreadManager();
 
        virtual void start( const bool useThreads = true );
 
        virtual void startAsync(OperationThreadManagerListener* listener);
 
        virtual void stop();
 
        virtual void setTask(te::common::TaskProgress* task);
 
        virtual AbstractOperation* getOperation() const;
 
      protected:
        
        std::unique_ptr<AbstractOperation> m_operation;
        std::unique_ptr<AbstractDataHandler> m_dataHandler;
        std::thread* m_thread;
        te::common::TaskProgress* m_task;        
 
        void startImpl(te::vp::OperationThreadManagerListener* listener, const bool useThreads );
 
        void stopThread();
        
        static void ExecuteOperation(te::vp::AbstractOperation* operation, 
          te::vp::AbstractDataHandler* dataHandler, std::size_t groupIndex, 
          te::common::TaskProgress* taskProgress);
 
 
    };
  }
}
 
#endif //__TERRALIB_VP_INTERNAL_OPERATIONTHREADMANAGER_H