GPUChainITS.cxx

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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.
 
 
#include "GPUChainITS.h"
#include "GPUConstantMem.h"
#include "DataFormatsITS/TrackITS.h"
#include "ITStracking/ExternalAllocator.h"
#include "GPUReconstructionIncludesITS.h"
 
using namespace o2::gpu;
 
namespace o2::its
{
class GPUFrameworkExternalAllocator final : public o2::its::ExternalAllocator
{
 public:
  void* allocate(size_t size) final
  {
    return mFWReco->AllocateDirectMemory(size, mType);
  }
  void deallocate(char* ptr, size_t size) final {} // this is a simple no-op
  void pushTagOnStack(uint64_t tag) final
  {
    mFWReco->PushNonPersistentMemory(tag);
  }
  void popTagOffStack(uint64_t tag) final
  {
    mFWReco->PopNonPersistentMemory(GPUDataTypes::RecoStep::ITSTracking, tag);
  }
  void setReconstructionFramework(o2::gpu::GPUReconstruction* fwr) { mFWReco = fwr; }
 
 private:
  o2::gpu::GPUReconstruction* mFWReco;
};
} // namespace o2::its
 
GPUChainITS::~GPUChainITS() = default;
 
GPUChainITS::GPUChainITS(GPUReconstruction* rec) : GPUChain(rec) {}
 
int32_t GPUChainITS::Init() { return 0; }
 
o2::its::TrackerTraits<7>* GPUChainITS::GetITSTrackerTraits()
{
  if (mITSTrackerTraits == nullptr) {
    mRec->GetITSTraits(&mITSTrackerTraits, nullptr, nullptr);
  }
  return mITSTrackerTraits.get();
}
 
o2::its::VertexerTraits<7>* GPUChainITS::GetITSVertexerTraits()
{
  if (mITSVertexerTraits == nullptr) {
    mRec->GetITSTraits(nullptr, &mITSVertexerTraits, nullptr);
  }
  return mITSVertexerTraits.get();
}
 
o2::its::TimeFrame<7>* GPUChainITS::GetITSTimeframe()
{
  if (mITSTimeFrame == nullptr) {
    mRec->GetITSTraits(nullptr, nullptr, &mITSTimeFrame);
  }
#if !defined(GPUCA_STANDALONE)
  if (mITSTimeFrame->isGPU()) {
    mFrameworkAllocator.reset(new o2::its::GPUFrameworkExternalAllocator());
    mFrameworkAllocator->setReconstructionFramework(rec());
    mITSTimeFrame->setFrameworkAllocator(mFrameworkAllocator.get());
  }
#endif
  return mITSTimeFrame.get();
}
 
int32_t GPUChainITS::PrepareEvent() { return 0; }
 
int32_t GPUChainITS::Finalize() { return 0; }
 
int32_t GPUChainITS::RunChain() { return 0; }