TRUSTArray_device.tpp

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#ifndef TRUSTArr_device_TPP_included
#define TRUSTArr_device_TPP_included
 
#include <TRUSTArray.h>
 
// Methodes de verification que le tableau est a jour sur le host:
// ToDo OpenMP :Appels couteux (car non inlines?) depuis operator()[int] mais comment faire mieux ?
template<typename _TYPE_, typename _SIZE_>
inline void TRUSTArray<_TYPE_,_SIZE_>::ensureDataOnHost() const
{
#if defined(TRUST_USE_GPU) && !defined(TRUST_USE_UVM)
  if (get_data_location()==DataLocation::Device)
    copyFromDevice(*this);
#endif
}
 
template<typename _TYPE_, typename _SIZE_>
inline void TRUSTArray<_TYPE_,_SIZE_>::ensureDataOnHost()
{
#if defined(TRUST_USE_GPU) && !defined(TRUST_USE_UVM)
  const DataLocation& loc = get_data_location();
  if (loc==DataLocation::Host || loc==DataLocation::HostOnly || loc==DataLocation::PartialHostDevice) return;
  else if (loc==DataLocation::Device)
    copyFromDevice(*this);
  // On va modifier le tableau (non const) sur le host:
  set_data_location(DataLocation::Host);
#endif
}
 
// Fonction pour connaitre la localisation du tableau
template<typename _TYPE_, typename _SIZE_>
inline bool TRUSTArray<_TYPE_,_SIZE_>::isDataOnDevice() const
{
  DataLocation loc = get_data_location();
  return loc == DataLocation::Device || loc == DataLocation::HostDevice;
}
 
// Fonctions checkDataOnDevice pour lancement conditionnel de kernels sur le device:
// -Si les tableaux passes en parametre sont sur a jour sur le device
// -Si ce n'est pas le cas, les tableaux sont copies sur le host via ensureDataOnHost
template<typename _TYPE_, typename _SIZE_>
inline bool TRUSTArray<_TYPE_,_SIZE_>::checkDataOnDevice() const
{
#ifdef TRUST_USE_GPU
  bool flag = isDataOnDevice();
  if (!flag)
    ensureDataOnHost();
  //else
  //  set_data_location(Device); // non const array will be computed on device
  return flag;
#else
  return false;
#endif
}
 
template<typename _TYPE_, typename _SIZE_>
inline bool TRUSTArray<_TYPE_,_SIZE_>::checkDataOnDevice()
{
#ifdef TRUST_USE_GPU
  bool flag = isDataOnDevice();
  if (!flag)
    ensureDataOnHost();
  else
    set_data_location(DataLocation::Device); // non const array will be computed on device
  return flag;
#else
  return false;
#endif
}
 
template<typename _TYPE_, typename _SIZE_>
inline bool TRUSTArray<_TYPE_,_SIZE_>::checkDataOnDevice(const TRUSTArray& tab_const)
{
#ifdef TRUST_USE_GPU
  bool flag = isDataOnDevice() && tab_const.isDataOnDevice();
  // Si un des deux tableaux n'est pas a jour sur le device alors l'operation se fera sur le host:
  if (!flag)
    {
      this->ensureDataOnHost();
      tab_const.ensureDataOnHost();
    }
  else
    set_data_location(DataLocation::Device); // non const array will be computed on device
  return flag;
#else
  return false;
#endif
}
 
 
#endif