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76 lines
2.0 KiB
76 lines
2.0 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/detail/allocator/tagged_allocator.h>
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#include <thrust/detail/allocator/allocator_traits.h>
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#include <thrust/pair.h>
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#include <thrust/memory.h>
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#include <thrust/detail/execution_policy.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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// XXX the pointer parameter given to tagged_allocator should be related to
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// the type of the expression get_temporary_buffer(system, n).first
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// without decltype, compromise on pointer<T,System>
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template<typename T, typename System>
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class temporary_allocator
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: public thrust::detail::tagged_allocator<
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T, System, thrust::pointer<T,System>
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>
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{
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private:
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typedef thrust::detail::tagged_allocator<
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T, System, thrust::pointer<T,System>
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> super_t;
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System &m_system;
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public:
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typedef typename super_t::pointer pointer;
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typedef typename super_t::size_type size_type;
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inline explicit temporary_allocator(thrust::execution_policy<System> &system) :
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super_t(),
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m_system(thrust::detail::derived_cast(system))
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{}
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pointer allocate(size_type cnt);
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void deallocate(pointer p, size_type n);
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inline System &system()
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{
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return m_system;
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} // end system()
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private:
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typedef thrust::pair<pointer, size_type> pointer_and_size;
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}; // end temporary_allocator
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} // end detail
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} // end thrust
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#include <thrust/detail/allocator/temporary_allocator.inl>
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