ObjectStore.h

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// Copyright 2019-2020 CERN and copyright holders of ALICE O2.
// See https://alice-o2.web.cern.ch/copyright for details of the copyright holders.
// All rights not expressly granted are reserved.
//
// This software is distributed under the terms of the GNU General Public
// License v3 (GPL Version 3), copied verbatim in the file "COPYING".
//
// In applying this license CERN does not waive the privileges and immunities
// granted to it by virtue of its status as an Intergovernmental Organization
// or submit itself to any jurisdiction.
 
#ifndef O2_OBJECTSTORE_H
#define O2_OBJECTSTORE_H
 
 
#include <variant>
#include <memory>
#include <vector>
#include <Headers/DataHeader.h>
 
class TObject;
 
namespace o2
{
 
namespace framework
{
struct DataRef;
struct DataAllocator;
} // namespace framework
 
namespace mergers
{
 
class MergeInterface;
 
using TObjectPtr = std::shared_ptr<TObject>;
using VectorOfRawTObjects = std::vector<TObject*>;
using VectorOfTObjectPtrs = std::vector<TObjectPtr>;
using MergeInterfacePtr = std::shared_ptr<MergeInterface>;
using ObjectStore = std::variant<std::monostate, TObjectPtr, VectorOfTObjectPtrs, MergeInterfacePtr>;
 
namespace object_store_helpers
{
 
ObjectStore extractObjectFrom(const framework::DataRef& ref);
 
VectorOfRawTObjects toRawObserverPointers(const VectorOfTObjectPtrs&);
 
bool snapshot(framework::DataAllocator& allocator, const header::DataHeader::SubSpecificationType subSpec, const ObjectStore& mergedObject);
 
} // namespace object_store_helpers
 
} // namespace mergers
} // namespace o2
 
#endif // O2_OBJECTSTORE_H