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#pragma once

#include <thrust/detail/config.h>

#if THRUST_DEVICE_COMPILER == THRUST_DEVICE_COMPILER_HIP

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

#  include <thrust/system/hip/detail/execution_policy.h>

#  include <mutex>
#  include <unordered_map>

THRUST_NAMESPACE_BEGIN

namespace hip_rocprim
{

template <typename MR, typename DerivedPolicy>
THRUST_HOST MR* get_per_device_resource(execution_policy<DerivedPolicy>&)
{
  static std::mutex map_lock;
  static std::unordered_map<int, MR> device_id_to_resource;

  int device_id;
  thrust::hip_rocprim::throw_on_error(hipGetDevice(&device_id));

  std::lock_guard<std::mutex> lock{map_lock};
  return &device_id_to_resource[device_id];
}

} // namespace hip_rocprim

THRUST_NAMESPACE_END

#endif
