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// TODO: Move into system::cuda

#pragma once

#include <thrust/detail/config.h>

#if defined(_CCCL_IMPLICIT_SYSTEM_HEADER_GCC)
#  pragma GCC system_header
#elif defined(_CCCL_IMPLICIT_SYSTEM_HEADER_CLANG)
#  pragma clang system_header
#elif defined(_CCCL_IMPLICIT_SYSTEM_HEADER_MSVC)
#  pragma system_header
#endif // no system header
#include <thrust/detail/cpp14_required.h>

#if _CCCL_STD_VER >= 2014

#  if THRUST_DEVICE_COMPILER == THRUST_DEVICE_COMPILER_NVCC

#    include <thrust/system/cuda/config.h>

#    include <thrust/detail/cstdint.h>
#    include <thrust/detail/execute_with_allocator.h>
#    include <thrust/detail/type_deduction.h>
#    include <thrust/mr/allocator.h>
#    include <thrust/mr/disjoint_sync_pool.h>
#    include <thrust/mr/host_memory_resource.h>
#    include <thrust/mr/sync_pool.h>
#    include <thrust/per_device_resource.h>
#    include <thrust/system/cuda/memory_resource.h>

THRUST_NAMESPACE_BEGIN

namespace system
{
namespace cuda
{
namespace detail
{

using default_async_host_resource = thrust::mr::synchronized_pool_resource<thrust::host_memory_resource>;

template <typename DerivedPolicy>
auto get_async_host_allocator(thrust::detail::execution_policy_base<DerivedPolicy>&)
  THRUST_RETURNS(thrust::mr::stateless_resource_allocator<thrust::detail::uint8_t, default_async_host_resource>{})

  ///////////////////////////////////////////////////////////////////////////////

  using default_async_device_resource =
    thrust::mr::disjoint_synchronized_pool_resource<thrust::system::cuda::memory_resource,
                                                    thrust::mr::new_delete_resource>;

template <typename DerivedPolicy>
auto get_async_device_allocator(thrust::detail::execution_policy_base<DerivedPolicy>&)
  THRUST_RETURNS(thrust::per_device_allocator<thrust::detail::uint8_t, default_async_device_resource, par_t>{})

    template <typename Allocator, template <typename> class BaseSystem>
    auto get_async_device_allocator(thrust::detail::execute_with_allocator<Allocator, BaseSystem>& exec)
      THRUST_RETURNS(exec.get_allocator())

        template <typename Allocator, template <typename> class BaseSystem>
        auto get_async_device_allocator(
          thrust::detail::execute_with_allocator_and_dependencies<Allocator, BaseSystem>& exec)
          THRUST_RETURNS(exec.get_allocator())

  ///////////////////////////////////////////////////////////////////////////////

  using default_async_universal_host_pinned_resource =
    thrust::mr::synchronized_pool_resource<thrust::system::cuda::universal_host_pinned_memory_resource>;

template <typename DerivedPolicy>
auto get_async_universal_host_pinned_allocator(thrust::detail::execution_policy_base<DerivedPolicy>&) THRUST_RETURNS(
  thrust::mr::stateless_resource_allocator<thrust::detail::uint8_t, default_async_universal_host_pinned_resource>{})

} // namespace detail
} // namespace cuda
} // namespace system

THRUST_NAMESPACE_END

#  endif // THRUST_DEVICE_COMPILER == THRUST_DEVICE_COMPILER_NVCC

#endif