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/*
* Copyright 2021 NVIDIA Corporation
*
* Licensed under the Apache License, Version 2.0 (the "License");
* you may not use this file except in compliance with the License.
* You may obtain a copy of the License at
*
* http://www.apache.org/licenses/LICENSE-2.0
*
* Unless required by applicable law or agreed to in writing, software
* distributed under the License is distributed on an "AS IS" BASIS,
* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
* See the License for the specific language governing permissions and
* limitations under the License.
*/
#pragma once
#include <cub/config.cuh>
#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 <cub/detail/detect_cuda_runtime.cuh>
#include <cub/detail/exec_check_disable.cuh>
#include <nv/target>
#include <cuda_runtime_api.h>
CUB_NAMESPACE_BEGIN
namespace detail
{
/**
* Call `cudaDeviceSynchronize()` using the proper API for the current CUB and
* CUDA configuration.
*/
CUB_EXEC_CHECK_DISABLE
CUB_RUNTIME_FUNCTION inline cudaError_t device_synchronize()
{
cudaError_t result = cudaErrorNotSupported;
// Device-side sync is only available under CDPv1:
#if defined(CUB_DETAIL_CDPv1)
#if ((__CUDACC_VER_MAJOR__ > 11) || \
((__CUDACC_VER_MAJOR__ == 11) && (__CUDACC_VER_MINOR__ >= 6)))
// CUDA >= 11.6
#define CUB_TMP_DEVICE_SYNC_IMPL \
result = __cudaDeviceSynchronizeDeprecationAvoidance();
#else // CUDA < 11.6:
#define CUB_TMP_DEVICE_SYNC_IMPL result = cudaDeviceSynchronize();
#endif
#else // CDPv2 or no CDP:
#define CUB_TMP_DEVICE_SYNC_IMPL /* unavailable */
#endif // CDP version
NV_IF_TARGET(NV_IS_HOST,
(result = cudaDeviceSynchronize();),
(CUB_TMP_DEVICE_SYNC_IMPL));
#undef CUB_TMP_DEVICE_SYNC_IMPL
return result;
}
} // namespace detail
CUB_NAMESPACE_END
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