/* * Copyright 2008-2012 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> #include <thrust/system/omp/detail/copy.h> #include <thrust/system/detail/generic/copy.h> #include <thrust/detail/type_traits/minimum_type.h> #include <thrust/system/cpp/detail/copy.h> #include <thrust/iterator/detail/retag.h> namespace thrust { namespace system { namespace omp { namespace detail { namespace dispatch { template<typename DerivedPolicy, typename InputIterator, typename OutputIterator> OutputIterator copy(execution_policy<DerivedPolicy> &exec, InputIterator first, InputIterator last, OutputIterator result, thrust::incrementable_traversal_tag) { return thrust::system::cpp::detail::copy(exec, first, last, result); } // end copy() template<typename DerivedPolicy, typename InputIterator, typename OutputIterator> OutputIterator copy(execution_policy<DerivedPolicy> &exec, InputIterator first, InputIterator last, OutputIterator result, thrust::random_access_traversal_tag) { // XXX WAR problems reconciling unrelated types such as omp & tbb // reinterpret iterators as the policy we were passed // this ensures that generic::copy's implementation, which eventually results in // zip_iterator works correctly thrust::detail::tagged_iterator<OutputIterator,DerivedPolicy> retagged_result(result); return thrust::system::detail::generic::copy(exec, thrust::reinterpret_tag<DerivedPolicy>(first), thrust::reinterpret_tag<DerivedPolicy>(last), retagged_result).base(); } // end copy() template<typename DerivedPolicy, typename InputIterator, typename Size, typename OutputIterator> OutputIterator copy_n(execution_policy<DerivedPolicy> &exec, InputIterator first, Size n, OutputIterator result, thrust::incrementable_traversal_tag) { return thrust::system::cpp::detail::copy_n(exec, first, n, result); } // end copy_n() template<typename DerivedPolicy, typename InputIterator, typename Size, typename OutputIterator> OutputIterator copy_n(execution_policy<DerivedPolicy> &exec, InputIterator first, Size n, OutputIterator result, thrust::random_access_traversal_tag) { // XXX WAR problems reconciling unrelated types such as omp & tbb // reinterpret iterators as the policy we were passed // this ensures that generic::copy's implementation, which eventually results in // zip_iterator works correctly thrust::detail::tagged_iterator<OutputIterator,DerivedPolicy> retagged_result(result); return thrust::system::detail::generic::copy_n(exec, thrust::reinterpret_tag<DerivedPolicy>(first), n, retagged_result).base(); } // end copy_n() } // end dispatch template<typename DerivedPolicy, typename InputIterator, typename OutputIterator> OutputIterator copy(execution_policy<DerivedPolicy> &exec, InputIterator first, InputIterator last, OutputIterator result) { typedef typename thrust::iterator_traversal<InputIterator>::type traversal1; typedef typename thrust::iterator_traversal<OutputIterator>::type traversal2; typedef typename thrust::detail::minimum_type<traversal1,traversal2>::type traversal; // dispatch on minimum traversal return thrust::system::omp::detail::dispatch::copy(exec, first,last,result,traversal()); } // end copy() template<typename DerivedPolicy, typename InputIterator, typename Size, typename OutputIterator> OutputIterator copy_n(execution_policy<DerivedPolicy> &exec, InputIterator first, Size n, OutputIterator result) { typedef typename thrust::iterator_traversal<InputIterator>::type traversal1; typedef typename thrust::iterator_traversal<OutputIterator>::type traversal2; typedef typename thrust::detail::minimum_type<traversal1,traversal2>::type traversal; // dispatch on minimum traversal return thrust::system::omp::detail::dispatch::copy_n(exec,first,n,result,traversal()); } // end copy_n() } // end namespace detail } // end namespace omp } // end namespace system } // end namespace thrust