RecyclableDataObject.h

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// This file's extension implies that it's C, but it's really -*- C++ -*-.
/*
  Copyright (C) 2002-2019 CERN for the benefit of the ATLAS collaboration
*/
/*
 */
 
 
#ifndef ATHENAKERNEL_RECYCLABLEDATAOBJECT_H
#define ATHENAKERNEL_RECYCLABLEDATAOBJECT_H
 
 
// tbb/machine/gcc_generic.h has spurious trailing semicolons after
// the clz() functiosn (as of TBB 2019 U1).
#if defined(__GNUC__)
# pragma GCC diagnostic push
# pragma GCC diagnostic ignored "-Wpedantic"
#endif
#include "tbb/concurrent_queue.h"
#if defined(__GNUC__)
# pragma GCC diagnostic pop
#endif
#include <memory>
 
 
namespace Athena {
 

template <class DOBJ>
class RecyclableDataObject : public DOBJ
{
public:
  typedef tbb::concurrent_queue<DOBJ*> queue_t;
 

  template <typename... ARGS>
  RecyclableDataObject (std::shared_ptr<queue_t> queue, ARGS&&... args);
 

  virtual unsigned long release() override;
 
 
private:
  std::shared_ptr<queue_t> m_queue;
};
 

template <class DOBJ>
class RecyclableDataQueue
{
public:
  typedef typename RecyclableDataObject<DOBJ>::queue_t queue_t;
 

  RecyclableDataQueue();
 

  template <typename... ARGS>
  DOBJ* get (ARGS&&... args);
 

  ~RecyclableDataQueue();
 
 
private:
  std::shared_ptr<queue_t> m_queue;
};
 
 
} // namespace Athena
 
 
#include "AthenaKernel/RecyclableDataObject.icc"
 
 
#endif // not ATHENAKERNEL_RECYCLABLEDATAOBJECT_H