new_delete_resource.hpp

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/*
 * SPDX-FileCopyrightText: Copyright (c) 2020-2025, NVIDIA CORPORATION.
 * SPDX-License-Identifier: Apache-2.0
 */
#pragma once
 
#include <rmm/aligned.hpp>
#include <rmm/detail/aligned.hpp>
#include <rmm/detail/export.hpp>
#include <rmm/error.hpp>
#include <rmm/mr/host/host_memory_resource.hpp>
 
#include <cstddef>
 
namespace RMM_NAMESPACE {
namespace mr {
class [[deprecated("new_delete_resource is deprecated in 25.12 and will be removed in 26.02.")]]
new_delete_resource final : public host_memory_resource {
 public:
  new_delete_resource()                           = default;
  ~new_delete_resource() override                 = default;
  new_delete_resource(new_delete_resource const&) = default;  
  new_delete_resource(new_delete_resource&&)      = default;  
  new_delete_resource& operator=(new_delete_resource const&) =
    default;  
  new_delete_resource& operator=(new_delete_resource&&) =
    default;  
 
 private:
  void* do_allocate(std::size_t bytes,
                    std::size_t alignment = rmm::RMM_DEFAULT_HOST_ALIGNMENT) override
  {
    RMM_EXPECTS(rmm::is_supported_alignment(alignment),
                "Allocation alignment is not a power of 2.",
                rmm::bad_alloc);
 
    return rmm::detail::aligned_host_allocate(
      bytes, alignment, [](std::size_t size) { return ::operator new(size); });
  }
 
  void do_deallocate(void* ptr,
                     std::size_t bytes,
                     std::size_t alignment = rmm::RMM_DEFAULT_HOST_ALIGNMENT) noexcept override
  {
    rmm::detail::aligned_host_deallocate(
      ptr, bytes, alignment, [](void* ptr) { ::operator delete(ptr); });
  }
};
  // end of group
}  // namespace mr
}  // namespace RMM_NAMESPACE