Kokkos_OpenMP.hpp

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#ifndef KOKKOS_OPENMP_HPP
#define KOKKOS_OPENMP_HPP
 
#include <Kokkos_Macros.hpp>
#if defined(KOKKOS_ENABLE_OPENMP)
 
#include <Kokkos_Core_fwd.hpp>
 
#include <cstddef>
#include <iosfwd>
#include <Kokkos_HostSpace.hpp>
 
#ifdef KOKKOS_ENABLE_HBWSPACE
#include <Kokkos_HBWSpace.hpp>
#endif
 
#include <Kokkos_ScratchSpace.hpp>
#include <Kokkos_Parallel.hpp>
#include <Kokkos_TaskScheduler.hpp>
#include <Kokkos_Layout.hpp>
#include <impl/Kokkos_Tags.hpp>
#include <impl/Kokkos_Profiling_Interface.hpp>
#include <impl/Kokkos_ExecSpaceInitializer.hpp>
 
#include <vector>
 
/*--------------------------------------------------------------------------*/
 
namespace Kokkos {
 
namespace Impl {
class OpenMPExec;
}
 
class OpenMP {
 public:
  using execution_space = OpenMP;
 
  using memory_space =
#ifdef KOKKOS_ENABLE_HBWSPACE
      Experimental::HBWSpace;
#else
      HostSpace;
#endif
 
  using device_type          = Kokkos::Device<execution_space, memory_space>;
  using array_layout         = LayoutRight;
  using size_type            = memory_space::size_type;
  using scratch_memory_space = ScratchMemorySpace<OpenMP>;
 
  static void print_configuration(std::ostream&, const bool verbose = false);
 
  inline static bool in_parallel(OpenMP const& = OpenMP()) noexcept;
 
  static void impl_static_fence(OpenMP const& = OpenMP()) noexcept;
 
  void fence() const;
 
  inline static bool is_asynchronous(OpenMP const& = OpenMP()) noexcept;
 
  static std::vector<OpenMP> partition(...);
 
  static OpenMP create_instance(...);
 
  template <typename F>
  static void partition_master(F const& f, int requested_num_partitions = 0,
                               int requested_partition_size = 0);
 
  // use UniqueToken
  static int concurrency();
 
  static void impl_initialize(int thread_count = -1);
 
  static bool impl_is_initialized() noexcept;
 
  static void impl_finalize();
 
  inline static int impl_thread_pool_size() noexcept;
 
  KOKKOS_INLINE_FUNCTION
  static int impl_thread_pool_rank() noexcept;
 
  inline static int impl_thread_pool_size(int depth);
 
  // use UniqueToken
  inline static int impl_max_hardware_threads() noexcept;
 
  // use UniqueToken
  KOKKOS_INLINE_FUNCTION
  static int impl_hardware_thread_id() noexcept;
 
  static int impl_get_current_max_threads() noexcept;
 
  static constexpr const char* name() noexcept { return "OpenMP"; }
  uint32_t impl_instance_id() const noexcept { return 0; }
};
 
namespace Tools {
namespace Experimental {
template <>
struct DeviceTypeTraits<OpenMP> {
  static constexpr DeviceType id = DeviceType::OpenMP;
};
}  // namespace Experimental
}  // namespace Tools
 
namespace Impl {
 
class OpenMPSpaceInitializer : public ExecSpaceInitializerBase {
 public:
  OpenMPSpaceInitializer()  = default;
  ~OpenMPSpaceInitializer() = default;
  void initialize(const InitArguments& args) final;
  void finalize(const bool) final;
  void fence() final;
  void print_configuration(std::ostream& msg, const bool detail) final;
};
 
}  // namespace Impl
}  // namespace Kokkos
 
/*--------------------------------------------------------------------------*/
/*--------------------------------------------------------------------------*/
 
namespace Kokkos {
namespace Impl {
 
template <>
struct MemorySpaceAccess<Kokkos::OpenMP::memory_space,
                         Kokkos::OpenMP::scratch_memory_space> {
  enum : bool { assignable = false };
  enum : bool { accessible = true };
  enum : bool { deepcopy = false };
};
 
}  // namespace Impl
}  // namespace Kokkos
 
/*--------------------------------------------------------------------------*/
/*--------------------------------------------------------------------------*/
 
#include <OpenMP/Kokkos_OpenMP_Exec.hpp>
#include <OpenMP/Kokkos_OpenMP_Team.hpp>
#include <OpenMP/Kokkos_OpenMP_Parallel.hpp>
#include <OpenMP/Kokkos_OpenMP_Task.hpp>
 
#include <KokkosExp_MDRangePolicy.hpp>
/*--------------------------------------------------------------------------*/
 
#endif /* #if defined( KOKKOS_ENABLE_OPENMP ) && defined( _OPENMP ) */
#endif /* #ifndef KOKKOS_OPENMP_HPP */