ProcessingContext.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_FRAMEWORK_PROCESSINGCONTEXT_H_
#define O2_FRAMEWORK_PROCESSINGCONTEXT_H_
 
#include "Framework/ServiceRegistryRef.h"
#include "Framework/DeviceStateEnums.h"
 
namespace o2::framework
{
 
struct ServiceRegistry;
struct DataAllocator;
struct InputRecord;
 
// This is a utility class to reduce the amount of boilerplate when  defining
// an algorithm.
class ProcessingContext
{
 public:
  ProcessingContext(InputRecord& inputs, ServiceRegistryRef services, DataAllocator& allocator)
    : mInputs(inputs),
      mServices(services),
      mAllocator(allocator)
  {
  }
 
  InputRecord& inputs() { return mInputs; }
  ServiceRegistryRef services() { return mServices; }
  DataAllocator& outputs() { return mAllocator; }
 
  [[nodiscard]] StreamingState streamingState() const;
  [[nodiscard]] TransitionHandlingState transitionState() const;
 
  InputRecord& mInputs;
  ServiceRegistryRef mServices;
  DataAllocator& mAllocator;
};
 
} // namespace o2::framework
 
#endif // O2_FRAMEWORK_PROCESSINGCONTEXT_H_