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149 lines
4.5 KiB
149 lines
4.5 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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#include <thrust/detail/temporary_array.h>
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#include <thrust/distance.h>
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#include <thrust/system/detail/generic/select_system.h>
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#include <thrust/detail/type_traits.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 temporary_array_detail
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{
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template<typename T> struct avoid_initialization : thrust::detail::has_trivial_copy_constructor<T> {};
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template<typename T, typename TemporaryArray, typename Size>
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typename thrust::detail::enable_if<
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avoid_initialization<T>::value
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>::type
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construct_values(TemporaryArray &,
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Size)
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{
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// avoid the overhead of initialization
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} // end construct_values()
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template<typename T, typename TemporaryArray, typename Size>
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typename thrust::detail::disable_if<
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avoid_initialization<T>::value
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>::type
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construct_values(TemporaryArray &a,
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Size n)
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{
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a.default_construct_n(a.begin(), n);
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} // end construct_values()
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} // end temporary_array_detail
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template<typename T, typename System>
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temporary_array<T,System>
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::temporary_array(thrust::execution_policy<System> &system, size_type n)
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:super_t(n, alloc_type(temporary_allocator<T,System>(system)))
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{
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temporary_array_detail::construct_values<T>(*this, n);
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} // end temporary_array::temporary_array()
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template<typename T, typename System>
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temporary_array<T,System>
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::temporary_array(int, thrust::execution_policy<System> &system, size_type n)
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:super_t(n, alloc_type(temporary_allocator<T,System>(system)))
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{
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// avoid initialization
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;
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} // end temporary_array::temporary_array()
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template<typename T, typename System>
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template<typename InputIterator>
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temporary_array<T,System>
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::temporary_array(thrust::execution_policy<System> &system,
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InputIterator first,
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size_type n)
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: super_t(alloc_type(temporary_allocator<T,System>(system)))
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{
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super_t::allocate(n);
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super_t::uninitialized_copy_n(system, first, n, super_t::begin());
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} // end temporary_array::temporary_array()
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template<typename T, typename System>
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template<typename InputIterator, typename InputSystem>
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temporary_array<T,System>
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::temporary_array(thrust::execution_policy<System> &system,
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thrust::execution_policy<InputSystem> &input_system,
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InputIterator first,
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size_type n)
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: super_t(alloc_type(temporary_allocator<T,System>(system)))
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{
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super_t::allocate(n);
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super_t::uninitialized_copy_n(input_system, first, n, super_t::begin());
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} // end temporary_array::temporary_array()
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template<typename T, typename System>
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template<typename InputIterator>
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temporary_array<T,System>
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::temporary_array(thrust::execution_policy<System> &system,
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InputIterator first,
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InputIterator last)
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: super_t(alloc_type(temporary_allocator<T,System>(system)))
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{
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super_t::allocate(thrust::distance(first,last));
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super_t::uninitialized_copy(system, first, last, super_t::begin());
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} // end temporary_array::temporary_array()
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template<typename T, typename System>
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template<typename InputSystem, typename InputIterator>
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temporary_array<T,System>
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::temporary_array(thrust::execution_policy<System> &system,
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thrust::execution_policy<InputSystem> &input_system,
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InputIterator first,
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InputIterator last)
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: super_t(alloc_type(temporary_allocator<T,System>(system)))
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{
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super_t::allocate(thrust::distance(first,last));
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super_t::uninitialized_copy(input_system, first, last, super_t::begin());
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} // end temporary_array::temporary_array()
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template<typename T, typename System>
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temporary_array<T,System>
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::~temporary_array()
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{
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// note that super_t::destroy will ignore trivial destructors automatically
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super_t::destroy(super_t::begin(), super_t::end());
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} // end temporary_array::~temporary_array()
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} // end detail
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} // end thrust
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