Region.hpp

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//~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~//
// Copyright (c) Lawrence Livermore National Security, LLC and other
// RAJA Project Developers. See top-level LICENSE and COPYRIGHT
// files for dates and other details. No copyright assignment is required
// to contribute to RAJA.
//
// SPDX-License-Identifier: (BSD-3-Clause)
//~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~//
 
#ifndef RAJA_pattern_kernel_region_HPP
#define RAJA_pattern_kernel_region_HPP
 
#include "RAJA/config.hpp"
#include "RAJA/pattern/region.hpp"
 
#include <iostream>
#include <type_traits>
 
namespace RAJA
{
 
namespace statement
{
 
template<typename RegionPolicy, typename... EnclosedStmts>
struct Region : public internal::Statement<camp::nil>
{};
 
 
}  // end namespace statement
 
namespace internal
{
 
// Statement executor to create a region within kernel
 
// Note: RAJA region's lambda must capture by reference otherwise
// internal function calls are undefined.
template<typename RegionPolicy, typename... EnclosedStmts, typename Types>
struct StatementExecutor<statement::Region<RegionPolicy, EnclosedStmts...>,
                         Types>
{
 
  template<typename Data>
  static RAJA_INLINE void exec(Data&& data)
  {
 
    RAJA::region<RegionPolicy>([&]() {
      using data_t = camp::decay<Data>;
      execute_statement_list<camp::list<EnclosedStmts...>, Types>(data_t(data));
    });
  }
};
 
 
}  // namespace internal
}  // end namespace RAJA
 
#endif /* RAJA_pattern_kernel_HPP */