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72 lines
2.6 KiB
72 lines
2.6 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/detail/execution_policy.h>
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#include <thrust/pair.h>
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#include <thrust/detail/pointer.h>
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#include <thrust/detail/raw_pointer_cast.h>
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#include <thrust/system/detail/generic/temporary_buffer.h>
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#include <thrust/system/detail/adl/temporary_buffer.h>
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namespace thrust
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{
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namespace detail
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{
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namespace get_temporary_buffer_detail
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{
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template<typename T, typename DerivedPolicy, typename Pair>
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thrust::pair<thrust::pointer<T,DerivedPolicy>, typename thrust::pointer<T,DerivedPolicy>::difference_type>
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down_cast_pair(Pair p)
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{
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// XXX should use a hypothetical thrust::static_pointer_cast here
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thrust::pointer<T,DerivedPolicy> ptr = thrust::pointer<T,DerivedPolicy>(static_cast<T*>(thrust::raw_pointer_cast(p.first)));
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typedef thrust::pair<thrust::pointer<T,DerivedPolicy>, typename thrust::pointer<T,DerivedPolicy>::difference_type> result_type;
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return result_type(ptr, p.second);
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} // end down_cast_pair()
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} // end get_temporary_buffer_detail
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} // end detail
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template<typename T, typename DerivedPolicy>
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thrust::pair<thrust::pointer<T,DerivedPolicy>, typename thrust::pointer<T,DerivedPolicy>::difference_type>
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get_temporary_buffer(const thrust::detail::execution_policy_base<DerivedPolicy> &exec, typename thrust::pointer<T,DerivedPolicy>::difference_type n)
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{
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using thrust::system::detail::generic::get_temporary_buffer;
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return thrust::detail::get_temporary_buffer_detail::down_cast_pair<T,DerivedPolicy>(get_temporary_buffer<T>(thrust::detail::derived_cast(thrust::detail::strip_const(exec)), n));
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} // end get_temporary_buffer()
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template<typename DerivedPolicy, typename Pointer>
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void return_temporary_buffer(const thrust::detail::execution_policy_base<DerivedPolicy> &exec, Pointer p)
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{
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using thrust::system::detail::generic::return_temporary_buffer;
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return return_temporary_buffer(thrust::detail::derived_cast(thrust::detail::strip_const(exec)), p);
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} // end return_temporary_buffer()
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} // end thrust
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