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93 lines
2.5 KiB
93 lines
2.5 KiB
/* |
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* Copyright 2008-2012 NVIDIA Corporation |
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* |
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* Licensed under the Apache License, Version 2.0 (the "License"); |
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* you may not use this file except in compliance with the License. |
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* You may obtain a copy of the License at |
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* |
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* http://www.apache.org/licenses/LICENSE-2.0 |
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* |
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* Unless required by applicable law or agreed to in writing, software |
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* distributed under the License is distributed on an "AS IS" BASIS, |
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* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. |
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* See the License for the specific language governing permissions and |
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* limitations under the License. |
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*/ |
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#pragma once |
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#include <thrust/detail/config.h> |
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#include <thrust/system/cuda/detail/execution_policy.h> |
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#include <thrust/system/cuda/detail/assign_value.h> |
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#include <thrust/detail/raw_pointer_cast.h> |
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#include <thrust/iterator/iterator_traits.h> |
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namespace thrust |
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{ |
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namespace system |
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{ |
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namespace cuda |
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{ |
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namespace detail |
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{ |
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namespace |
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{ |
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template<typename DerivedPolicy, typename Pointer> |
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inline __host__ __device__ |
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typename thrust::iterator_value<Pointer>::type |
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get_value_msvc2005_war(execution_policy<DerivedPolicy> &exec, Pointer ptr) |
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{ |
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typedef typename thrust::iterator_value<Pointer>::type result_type; |
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// XXX war nvbugs/881631 |
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struct war_nvbugs_881631 |
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{ |
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__host__ inline static result_type host_path(execution_policy<DerivedPolicy> &exec, Pointer ptr) |
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{ |
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// when called from host code, implement with assign_value |
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// note that this requires a type with default constructor |
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result_type result; |
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thrust::host_system_tag host_tag; |
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cross_system<thrust::host_system_tag, DerivedPolicy> systems(host_tag, exec); |
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assign_value(systems, &result, ptr); |
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return result; |
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} |
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__device__ inline static result_type device_path(execution_policy<DerivedPolicy> &, Pointer ptr) |
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{ |
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// when called from device code, just do simple deref |
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return *thrust::raw_pointer_cast(ptr); |
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} |
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}; |
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#ifndef __CUDA_ARCH__ |
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return war_nvbugs_881631::host_path(exec, ptr); |
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#else |
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return war_nvbugs_881631::device_path(exec, ptr); |
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#endif // __CUDA_ARCH__ |
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} // end get_value_msvc2005_war() |
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} // end anon namespace |
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template<typename DerivedPolicy, typename Pointer> |
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inline __host__ __device__ |
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typename thrust::iterator_value<Pointer>::type |
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get_value(execution_policy<DerivedPolicy> &exec, Pointer ptr) |
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{ |
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return get_value_msvc2005_war(exec,ptr); |
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} // end get_value() |
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} // end detail |
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} // end cuda |
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} // end system |
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} // end thrust |
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