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176 lines (159 loc) · 4.12 KB
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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.
/// \file GPUROOTDump.h
/// \author David Rohr
#ifndef GPUROOTDUMP_H
#define GPUROOTDUMP_H
#include "GPUCommonDef.h"
#if !defined(GPUCA_NO_ROOT) && !defined(GPUCA_GPUCODE)
#include "GPUROOTDumpCore.h"
#include <TTree.h>
#include <TNtuple.h>
#include <memory>
#include <stdexcept>
#else
class TNtuple;
#endif
namespace GPUCA_NAMESPACE
{
namespace gpu
{
#if !defined(GPUCA_NO_ROOT) && !defined(GPUCA_GPUCODE)
namespace
{
template <class S>
struct internal_Branch {
template <typename... Args>
static void Branch(S* p, Args... args)
{
}
};
template <>
struct internal_Branch<TTree> {
template <typename... Args>
static void Branch(TTree* p, Args... args)
{
p->Branch(args...);
}
};
} // namespace
template <class T, typename... Args>
class GPUROOTDump : public GPUROOTDump<Args...>
{
public:
template <typename... Names>
static GPUROOTDump<T, Args...>& get(const char* name1, Names... names) // return always the same instance, identified by template
{
static GPUROOTDump<T, Args...> instance(name1, names...);
return instance;
}
template <typename... Names>
static GPUROOTDump<T, Args...> getNew(const char* name1, Names... names) // return new individual instance
{
return GPUROOTDump<T, Args...>(name1, names...);
}
void Fill(const T& o, Args... args)
{
mObj = o;
GPUROOTDump<Args...>::Fill(args...);
}
protected:
using GPUROOTDump<Args...>::mTree;
template <typename... Names>
GPUROOTDump(const char* name1, Names... names) : GPUROOTDump<Args...>(names...)
{
mTree->Branch(name1, &mObj);
}
private:
T mObj;
};
template <class T>
class GPUROOTDump<T> : public GPUROOTDumpBase
{
public:
static GPUROOTDump<T>& get(const char* name) // return always the same instance, identified by template
{
static GPUROOTDump<T> instance(name);
return instance;
}
static GPUROOTDump<T> getNew(const char* name) // return new individual instance
{
return GPUROOTDump<T>(name);
}
void write() override { mTree->Write(); }
void Fill(const T& o)
{
mObj = o;
mTree->Fill();
}
protected:
GPUROOTDump(const char* name1, const char* nameTree = nullptr)
{
if (nameTree == nullptr) {
nameTree = name1;
}
mTree = new TTree(nameTree, nameTree);
mTree->Branch(name1, &mObj);
}
TTree* mTree = nullptr;
private:
T mObj;
};
template <>
class GPUROOTDump<TNtuple> : public GPUROOTDumpBase
{
public:
static GPUROOTDump<TNtuple>& get(const char* name, const char* options)
{
static GPUROOTDump<TNtuple> instance(name, options);
return instance;
}
static GPUROOTDump<TNtuple> getNew(const char* name, const char* options)
{
return GPUROOTDump<TNtuple>(name, options);
}
void write() override { mNTuple->Write(); }
template <typename... Args>
void Fill(Args... args)
{
mNTuple->Fill(args...);
}
private:
GPUROOTDump(const char* name, const char* options)
{
mNTuple = new TNtuple(name, name, options);
}
TNtuple* mNTuple;
};
#else
template <typename... Args>
class GPUROOTDump
{
public:
template <typename... Args>
GPUd() void Fill(Args... args) const
{
}
template <typename... Args>
GPUd() static GPUROOTDump<T>& get(Args... args)
{
return *(GPUROOTDump<T>*)(size_t)(1024); // Will never be used, return just some reference, which must not be nullptr by specification
}
template <typename... Args>
GPUd() static GPUROOTDump<T>& getNew(Args... args)
{
return *(GPUROOTDump<T>*)(size_t)(1024); // Will never be used, return just some reference, which must not be nullptr by specification
}
};
#endif
} // namespace gpu
} // namespace GPUCA_NAMESPACE
#endif