ArenaCachingHandle.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
*/
 
// $Id: ArenaCachingHandle.h 470529 2011-11-24 23:54:22Z ssnyder $
 
#ifndef ATLALLOCATORS_ARENACACHINGHANDLE_H
#define ATLALLOCATORS_ARENACACHINGHANDLE_H
 
 
#include "AthAllocators/ArenaHandleBaseT.h"
#include "AthAllocators/Arena.h"
 
 
namespace SG {
 
 
template <class T, class ALLOC>
class ArenaCachingHandle
  : public ArenaHandleBaseT<T, ALLOC>
{
public:
  typedef ArenaHandleBaseT<T, ALLOC> Base;
 
  typedef T* pointer;
 
  typedef typename Base::iterator iterator;
  typedef typename Base::const_iterator const_iterator;
 
 
  ArenaCachingHandle (ArenaHeader* header, size_t index);
 
 
  typedef typename ALLOC::template initParams<T, false> defaultParams_t;
 
 
  ArenaCachingHandle (const typename ALLOC::Params* params = nullptr);
 
 
 
  ArenaCachingHandle (ArenaHeader* header,
                      const typename ALLOC::Params* params = nullptr);
 
 
  ArenaCachingHandle (ArenaHeader* header,
                      const EventContext& ctx,
                      const typename ALLOC::Params* params = nullptr);
 
 
  ArenaCachingHandle (Arena* arena, const typename ALLOC::Params* params = nullptr);
 
 
  pointer allocate();
 
 
  static
  std::unique_ptr<ArenaAllocatorBase>
  makeAllocator (const typename ALLOC::Params& params);
 
 
  // The following methods are inherited:
  //  const ALLOC::Params& params() const;
  //  void reset();
  //  void erase();
  //  void reserve(size_t);
  //  const ArenaAllocatorBase::Stats& stats() const;
  //
  // The following inherited functions may be instantiated only
  // if the Allocator supports them:
  //  iterator begin();
  //  const_iterator begin() const;
  //  iterator end();
  //  const_iterator end() const;
  //  void free (pointer p) const;
  //  void resetTo (pointer p) const;
};
 
 
} //  namespace SG
 
 
 
#include "AthAllocators/ArenaCachingHandle.icc"
 
 
 
#endif // not ATLALLOCATORS_ARENACACHINGHANDLE_H