text: /*
   * This file is part of hipSYCL, a SYCL implementation based on CUDA/HIP
   *
   * Copyright (c) 2018-2020 Aksel Alpay
   * All rights reserved.
   *
   * Redistribution and use in source and binary forms, with or without
   * modification, are permitted provided that the following conditions are met:
   *
   * 1. Redistributions of source code must retain the above copyright notice, this
   *    list of conditions and the following disclaimer.
   * 2. Redistributions in binary form must reproduce the above copyright notice,
   *    this list of conditions and the following disclaimer in the documentation
   *    and/or other materials provided with the distribution.
   *
   * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS" AND
   * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED
   * WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE
   * DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT OWNER OR CONTRIBUTORS BE LIABLE FOR
   * ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES
   * (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES;
   * LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND
   * ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
   * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS
   * SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
   */
  
  #ifndef HIPSYCL_SP_ITEM_HPP
  #define HIPSYCL_SP_ITEM_HPP
  
  #include "backend/backend.hpp"
  #include "id.hpp"
  #include "range.hpp"
  #include "detail/thread_hierarchy.hpp"
  
  namespace hipsycl {
  namespace sycl {
  namespace detail {
  
  template<int Dim>
  class sp_item
  {
    template<int D>
    HIPSYCL_KERNEL_TARGET
    friend sp_item<D> make_sp_item(
      sycl::id<D> local_id, sycl::id<D> group_id,
      sycl::range<D> local_range, sycl::range<D> num_groups);
  public:
    HIPSYCL_KERNEL_TARGET
    sycl::range<Dim> get_global_range() const {
      return _num_groups * _local_range;
    }
  
    HIPSYCL_KERNEL_TARGET
    size_t get_global_range(int dimension) const {
      return _num_groups[dimension] * _local_range[dimension];
    }
  
    HIPSYCL_KERNEL_TARGET
    sycl::id<Dim> get_global_id() const {
      return _local_id + _group_id * _local_range;
    }
  
    HIPSYCL_KERNEL_TARGET
    size_t get_global_id(int dimension) const {
      return _local_id[dimension] + 
        _group_id[dimension] * _local_range[dimension];
    }
  
    HIPSYCL_KERNEL_TARGET
    size_t get_global_linear_id() const {
      return detail::linear_id<Dim>::get(get_global_id(), get_global_range());
    }
  
    HIPSYCL_KERNEL_TARGET
    sycl::range<Dim> get_local_range() const {
      return _local_range;
    }
  
    HIPSYCL_KERNEL_TARGET
    size_t get_local_range(int dimension) const {
      return _local_range[dimension];
    }
  
    HIPSYCL_KERNEL_TARGET
    sycl::id<Dim> get_local_id() const {
      return _local_id;
    }
  
    HIPSYCL_KERNEL_TARGET
    size_t get_local_id(int dimension) const {
      return _local_id[dimension];
    }
  
    HIPSYCL_KERNEL_TARGET
    size_t get_local_linear_id() const {
      return detail::linear_id<Dim>::get(_local_id, _local_range);
    }
  private:
    sp_item(sycl::id<Dim> local_id, sycl::id<Dim> group_id,
            sycl::range<Dim> local_range, sycl::range<Dim> num_groups)
      : _local_id{local_id}, _group_id{group_id}, 
        _local_range{local_range}, _num_groups{num_groups}
    {}
    
    sycl::id<Dim> _local_id;
    sycl::id<Dim> _group_id;
  
    sycl::range<Dim> _local_range;
    sycl::range<Dim> _num_groups;
  };
  
  template<int Dim>
  HIPSYCL_KERNEL_TARGET
  sp_item<Dim> make_sp_item(sycl::id<Dim> local_id, sycl::id<Dim> group_id,
                            sycl::range<Dim> local_range, sycl::range<Dim> num_groups){
  
    return sp_item<Dim>{local_id, group_id, local_range, num_groups};
  }
  
  }
  
  template<int Dim>
  using logical_item=detail::sp_item<Dim>;
  
  template<int Dim>
  using physical_item=detail::sp_item<Dim>;
  
  }
  }
  
  #endif
  