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148 lines
5.0 KiB
148 lines
5.0 KiB
![]()
11 years ago
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/*
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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/omp/detail/copy.h>
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#include <thrust/system/detail/generic/copy.h>
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#include <thrust/detail/type_traits/minimum_type.h>
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#include <thrust/system/cpp/detail/copy.h>
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#include <thrust/iterator/detail/retag.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 omp
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{
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namespace detail
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{
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namespace dispatch
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{
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template<typename DerivedPolicy,
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typename InputIterator,
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typename OutputIterator>
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OutputIterator copy(execution_policy<DerivedPolicy> &exec,
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InputIterator first,
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InputIterator last,
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OutputIterator result,
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thrust::incrementable_traversal_tag)
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{
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return thrust::system::cpp::detail::copy(exec, first, last, result);
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} // end copy()
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template<typename DerivedPolicy,
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typename InputIterator,
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typename OutputIterator>
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OutputIterator copy(execution_policy<DerivedPolicy> &exec,
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InputIterator first,
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InputIterator last,
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OutputIterator result,
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thrust::random_access_traversal_tag)
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{
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// XXX WAR problems reconciling unrelated types such as omp & tbb
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// reinterpret iterators as the policy we were passed
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// this ensures that generic::copy's implementation, which eventually results in
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// zip_iterator works correctly
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thrust::detail::tagged_iterator<OutputIterator,DerivedPolicy> retagged_result(result);
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return thrust::system::detail::generic::copy(exec, thrust::reinterpret_tag<DerivedPolicy>(first), thrust::reinterpret_tag<DerivedPolicy>(last), retagged_result).base();
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} // end copy()
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template<typename DerivedPolicy,
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typename InputIterator,
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typename Size,
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typename OutputIterator>
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OutputIterator copy_n(execution_policy<DerivedPolicy> &exec,
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InputIterator first,
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Size n,
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OutputIterator result,
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thrust::incrementable_traversal_tag)
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{
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return thrust::system::cpp::detail::copy_n(exec, first, n, result);
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} // end copy_n()
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template<typename DerivedPolicy,
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typename InputIterator,
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typename Size,
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typename OutputIterator>
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OutputIterator copy_n(execution_policy<DerivedPolicy> &exec,
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InputIterator first,
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Size n,
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OutputIterator result,
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thrust::random_access_traversal_tag)
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{
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// XXX WAR problems reconciling unrelated types such as omp & tbb
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// reinterpret iterators as the policy we were passed
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// this ensures that generic::copy's implementation, which eventually results in
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// zip_iterator works correctly
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thrust::detail::tagged_iterator<OutputIterator,DerivedPolicy> retagged_result(result);
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return thrust::system::detail::generic::copy_n(exec, thrust::reinterpret_tag<DerivedPolicy>(first), n, retagged_result).base();
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} // end copy_n()
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} // end dispatch
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template<typename DerivedPolicy,
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typename InputIterator,
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typename OutputIterator>
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OutputIterator copy(execution_policy<DerivedPolicy> &exec,
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InputIterator first,
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InputIterator last,
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OutputIterator result)
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{
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typedef typename thrust::iterator_traversal<InputIterator>::type traversal1;
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typedef typename thrust::iterator_traversal<OutputIterator>::type traversal2;
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typedef typename thrust::detail::minimum_type<traversal1,traversal2>::type traversal;
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// dispatch on minimum traversal
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return thrust::system::omp::detail::dispatch::copy(exec, first,last,result,traversal());
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} // end copy()
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template<typename DerivedPolicy,
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typename InputIterator,
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typename Size,
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typename OutputIterator>
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OutputIterator copy_n(execution_policy<DerivedPolicy> &exec,
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InputIterator first,
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Size n,
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OutputIterator result)
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{
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typedef typename thrust::iterator_traversal<InputIterator>::type traversal1;
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typedef typename thrust::iterator_traversal<OutputIterator>::type traversal2;
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typedef typename thrust::detail::minimum_type<traversal1,traversal2>::type traversal;
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// dispatch on minimum traversal
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return thrust::system::omp::detail::dispatch::copy_n(exec,first,n,result,traversal());
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} // end copy_n()
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} // end namespace detail
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} // end namespace omp
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} // end namespace system
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} // end namespace thrust
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