SP_PlatformFns* platform_fns);
void PopulateDefaultPlatformRegistrationParams(
    SE_PlatformRegistrationParams* const params);

void DestroyPlatform(SP_Platform* platform);
void DestroyPlatformFns(SP_PlatformFns* platform_fns);

}  // namespace test_util
}  // namespace stream_executor

void DestroyPlatform(SP_Platform* platform) {}
void DestroyPlatformFns(SP_PlatformFns* platform_fns) {}

void PopulateDefaultPlatformRegistrationParams(
    SE_PlatformRegistrationParams* const params) {
  PopulateDefaultPlatform(params->platform, params->platform_fns);
  params->destroy_platform = DestroyPlatform;
  params->destroy_platform_fns = DestroyPlatformFns;
}

}  // namespace test_util

  StreamExecutor* GetExecutor(int ordinal) {
    if (!cplatform_) {
      cplatform_ = absl::make_unique<CPlatform>(
          platform_, test_util::DestroyPlatform, platform_fns_,
          test_util::DestroyPlatformFns, device_fns_, se_, timer_fns_);
    }
    absl::StatusOr<StreamExecutor*> maybe_executor =
        cplatform_->ExecutorForDevice(ordinal);
    TF_CHECK_OK(maybe_executor.status());