ProducingModuleHelper.h

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#ifndef FWCore_Framework_stream_ProducingModuleHelper_h
#define FWCore_Framework_stream_ProducingModuleHelper_h
// -*- C++ -*-
//
// Package:     FWCore/Framework
//
// Original Author:  W. David Dagenhart
//         Created:  1 December 2017

namespace edm {

  class Event;
  class EventSetup;
  class WaitingTaskWithArenaHolder;

  namespace stream {

    namespace impl {
      class ExternalWork;
    }

    // Two overloaded functions, the first is called by doAcquire_
    // when the module inherits from ExternalWork. The first function
    // calls acquire, while the second function does nothing.
    void doAcquireIfNeeded(impl::ExternalWork*,
                           Event const&,
                           EventSetup const&,
                           WaitingTaskWithArenaHolder&);

    void doAcquireIfNeeded(void*,
                           Event const&,
                           EventSetup const&,
                           WaitingTaskWithArenaHolder&);
  }
}
#endif