derek.holloway
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84 lines
2.6 KiB
C++
84 lines
2.6 KiB
C++
/*
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* Copyright 2008-2013 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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/*! \file device_new.h
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* \brief Constructs new elements in device memory
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*/
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#pragma once
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#include <thrust/detail/config.h>
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// #include this for size_t
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#include <thrust/device_ptr.h>
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#include <cstddef>
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THRUST_NAMESPACE_BEGIN
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/*!
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* \addtogroup memory_management Memory Management
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* \{
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*/
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/*! \p device_new implements the placement \c new operator for types
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* resident in device memory. \p device_new calls <tt>T</tt>'s null
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* constructor on a array of objects in device memory.
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* No memory is allocated by this function.
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*
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* \param p A \p device_ptr to a region of device memory into which
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* to construct one or many <tt>T</tt>s.
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* \param n The number of objects to construct at \p p.
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* \return p, casted to <tt>T</tt>'s type.
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*
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* \see device_ptr
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*/
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template <typename T>
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device_ptr<T> device_new(device_ptr<void> p, const size_t n = 1);
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/*! \p device_new implements the placement new operator for types
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* resident in device memory. \p device_new calls <tt>T</tt>'s copy
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* constructor on a array of objects in device memory. No memory is
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* allocated by this function.
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*
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* \param p A \p device_ptr to a region of device memory into which to
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* construct one or many <tt>T</tt>s.
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* \param exemplar The value from which to copy.
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* \param n The number of objects to construct at \p p.
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* \return p, casted to <tt>T</tt>'s type.
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*
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* \see device_ptr
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* \see fill
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*/
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template <typename T>
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device_ptr<T> device_new(device_ptr<void> p, const T& exemplar, const size_t n = 1);
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/*! \p device_new implements the new operator for types resident in device memory.
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* It allocates device memory large enough to hold \p n new objects of type \c T.
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*
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* \param n The number of objects to allocate. Defaults to \c 1.
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* \return A \p device_ptr to the newly allocated region of device memory.
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*/
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template <typename T>
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device_ptr<T> device_new(const size_t n = 1);
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/*! \} // memory_management
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*/
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THRUST_NAMESPACE_END
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#include <thrust/detail/device_new.inl>
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