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/*
* Copyright 2008-2013 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 <thrust/detail/config.h>
#if THRUST_DEVICE_COMPILER == THRUST_DEVICE_COMPILER_NVCC
#include <thrust/system/cuda/config.h>
#include <thrust/system/cuda/detail/execution_policy.h>
#include <thrust/detail/raw_pointer_cast.h>
#include <thrust/system/cuda/detail/copy.h>
THRUST_NAMESPACE_BEGIN
namespace cuda_cub {
template<typename DerivedPolicy, typename Pointer1, typename Pointer2>
inline __host__ __device__
void assign_value(thrust::cuda::execution_policy<DerivedPolicy> &exec, Pointer1 dst, Pointer2 src)
{
// XXX war nvbugs/881631
struct war_nvbugs_881631
{
__host__ inline static void host_path(thrust::cuda::execution_policy<DerivedPolicy> &exec, Pointer1 dst, Pointer2 src)
{
cuda_cub::copy(exec, src, src + 1, dst);
}
__device__ inline static void device_path(thrust::cuda::execution_policy<DerivedPolicy> &, Pointer1 dst, Pointer2 src)
{
*thrust::raw_pointer_cast(dst) = *thrust::raw_pointer_cast(src);
}
};
if (THRUST_IS_HOST_CODE) {
#if THRUST_INCLUDE_HOST_CODE
war_nvbugs_881631::host_path(exec,dst,src);
#endif
} else {
#if THRUST_INCLUDE_DEVICE_CODE
war_nvbugs_881631::device_path(exec,dst,src);
#endif
}
} // end assign_value()
template<typename System1, typename System2, typename Pointer1, typename Pointer2>
inline __host__ __device__
void assign_value(cross_system<System1,System2> &systems, Pointer1 dst, Pointer2 src)
{
// XXX war nvbugs/881631
struct war_nvbugs_881631
{
__host__ inline static void host_path(cross_system<System1,System2> &systems, Pointer1 dst, Pointer2 src)
{
// rotate the systems so that they are ordered the same as (src, dst)
// for the call to thrust::copy
cross_system<System2,System1> rotated_systems = systems.rotate();
cuda_cub::copy(rotated_systems, src, src + 1, dst);
}
__device__ inline static void device_path(cross_system<System1,System2> &, Pointer1 dst, Pointer2 src)
{
// XXX forward the true cuda::execution_policy inside systems here
// instead of materializing a tag
thrust::cuda::tag cuda_tag;
thrust::cuda_cub::assign_value(cuda_tag, dst, src);
}
};
if (THRUST_IS_HOST_CODE) {
#if THRUST_INCLUDE_HOST_CODE
war_nvbugs_881631::host_path(systems,dst,src);
#endif
} else {
#if THRUST_INCLUDE_DEVICE_CODE
war_nvbugs_881631::device_path(systems,dst,src);
#endif
}
} // end assign_value()
} // end cuda_cub
THRUST_NAMESPACE_END
#endif
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