// $Id$

//**************************************************************************
//* This file is property of and copyright by the ALICE HLT Project        * 
//* ALICE Experiment at CERN, All rights reserved.                         *
//*                                                                        *
//* Primary Authors: Matthias Richter <Matthias.Richter@ift.uib.no>        *
//*                  for The ALICE HLT Project.                            *
//*                                                                        *
//* Permission to use, copy, modify and distribute this software and its   *
//* documentation strictly for non-commercial purposes is hereby granted   *
//* without fee, provided that the above copyright notice appears in all   *
//* copies and that both the copyright notice and this permission notice   *
//* appear in the supporting documentation. The authors make no claims     *
//* about the suitability of this software for any purpose. It is          *
//* provided "as is" without express or implied warranty.                  *
//**************************************************************************

/** @file   AliHLTPluginBase.cxx
    @author Matthias Richter
    @date   
    @brief  Base class for AliRoot HLT plugins.
*/

#include "AliHLTPluginBase.h"
#include "AliHLTSystem.h"
#include "AliHLTDataBuffer.h"

/** ROOT macro for the implementation of ROOT specific class methods */
ClassImp(AliHLTPluginBase)

AliHLTPluginBase::AliHLTPluginBase()
{
  // see header file for class documentation
  // or
  // refer to README to build package
  // or
  // visit http://web.ift.uib.no/~kjeks/doc/alice-hlt
  fNofInstances++;
}

AliHLTPluginBase::~AliHLTPluginBase()
{
  // see header file for class documentation
  if (--fNofInstances<=0) {
    delete fpSystem;
    fpSystem=NULL;

    // 2010-04-07 not sure whether this is the best place for
    // the global cleanup of memory pages. In case of AliReconstruction
    // there is no cleanup method for the reconstructor plugins. They
    // are just deleted at the end.
    // However, here we can assume that some global cleanup takes place
    // when we arrive at this point.
    AliHLTDataBuffer::AliHLTRawPage::GlobalClean();
  }
}

void AliHLTPluginBase::InitInstance()
{
  // see header file for class documentation
  if (!fpSystem) fpSystem=new AliHLTSystem;
}

AliHLTSystem* AliHLTPluginBase::GetInstance()
{
  // see header file for class documentation
  if (!fpSystem) InitInstance();
  return fpSystem;
}


AliHLTSystem* AliHLTPluginBase::fpSystem=NULL;

int AliHLTPluginBase::fNofInstances=0;