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418 lines
15 KiB
418 lines
15 KiB
/* |
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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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/*! \file device_vector.h |
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* \brief A dynamically-sizable array of elements which reside in the "device" memory space |
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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/device_malloc_allocator.h> |
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#include <thrust/detail/vector_base.h> |
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#include <vector> |
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namespace thrust |
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{ |
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// forward declaration of host_vector |
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template<typename T, typename Alloc> class host_vector; |
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/*! \addtogroup container_classes Container Classes |
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* \addtogroup device_containers Device Containers |
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* \ingroup container_classes |
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* \{ |
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*/ |
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/*! A \p device_vector is a container that supports random access to elements, |
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* constant time removal of elements at the end, and linear time insertion |
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* and removal of elements at the beginning or in the middle. The number of |
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* elements in a \p device_vector may vary dynamically; memory management is |
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* automatic. The memory associated with a \p device_vector resides in the memory |
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* space of a parallel device. |
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* |
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* \see http://www.sgi.com/tech/stl/Vector.html |
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* \see host_vector |
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*/ |
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template<typename T, typename Alloc = thrust::device_malloc_allocator<T> > |
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class device_vector |
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: public detail::vector_base<T,Alloc> |
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{ |
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private: |
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typedef detail::vector_base<T,Alloc> Parent; |
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public: |
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/*! \cond */ |
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typedef typename Parent::size_type size_type; |
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typedef typename Parent::value_type value_type; |
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/*! \endcond */ |
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/*! This constructor creates an empty \p device_vector. |
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*/ |
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__host__ |
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device_vector(void) |
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:Parent() {} |
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/*! This constructor creates a \p device_vector with the given |
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* size. |
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* \param n The number of elements to initially craete. |
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*/ |
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__host__ |
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explicit device_vector(size_type n) |
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:Parent(n) {} |
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/*! This constructor creates a \p device_vector with copies |
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* of an exemplar element. |
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* \param n The number of elements to initially create. |
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* \param value An element to copy. |
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*/ |
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__host__ |
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explicit device_vector(size_type n, const value_type &value) |
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:Parent(n,value) {} |
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/*! Copy constructor copies from an exemplar \p device_vector. |
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* \param v The \p device_vector to copy. |
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*/ |
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__host__ |
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device_vector(const device_vector &v) |
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:Parent(v) {} |
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/*! Copy constructor copies from an exemplar \p device_vector with different type. |
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* \param v The \p device_vector to copy. |
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*/ |
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template<typename OtherT, typename OtherAlloc> |
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__device__ |
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device_vector(const device_vector<OtherT,OtherAlloc> &v) |
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:Parent(v) {} |
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/*! Assign operator copies from an exemplar \p device_vector with different type. |
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* \param v The \p device_vector to copy. |
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*/ |
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template<typename OtherT, typename OtherAlloc> |
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__device__ |
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device_vector &operator=(const device_vector<OtherT,OtherAlloc> &v) |
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{ Parent::operator=(v); return *this; } |
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/*! Copy constructor copies from an exemplar \c std::vector. |
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* \param v The <tt>std::vector</tt> to copy. |
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*/ |
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template<typename OtherT, typename OtherAlloc> |
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__host__ |
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device_vector(const std::vector<OtherT,OtherAlloc> &v) |
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:Parent(v) {} |
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/*! Assign operator copies from an exemplar <tt>std::vector</tt>. |
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* \param v The <tt>std::vector</tt> to copy. |
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*/ |
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template<typename OtherT, typename OtherAlloc> |
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__host__ |
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device_vector &operator=(const std::vector<OtherT,OtherAlloc> &v) |
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{ Parent::operator=(v); return *this;} |
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/*! Copy constructor copies from an exemplar \p host_vector with possibly different type. |
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* \param v The \p host_vector to copy. |
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*/ |
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template<typename OtherT, typename OtherAlloc> |
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__host__ |
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device_vector(const host_vector<OtherT,OtherAlloc> &v); |
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/*! Assign operator copies from an examplar \p host_vector. |
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* \param v The \p host_vector to copy. |
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*/ |
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template<typename OtherT, typename OtherAlloc> |
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__host__ |
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device_vector &operator=(const host_vector<OtherT,OtherAlloc> &v) |
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{ Parent::operator=(v); return *this; } |
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/*! This constructor builds a \p device_vector from a range. |
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* \param first The beginning of the range. |
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* \param last The end of the range. |
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*/ |
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template<typename InputIterator> |
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__host__ |
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device_vector(InputIterator first, InputIterator last) |
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:Parent(first,last) {} |
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// declare these members for the purpose of Doxygenating them |
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// they actually exist in a derived-from class |
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#if 0 |
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/*! \brief Resizes this vector to the specified number of elements. |
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* \param new_size Number of elements this vector should contain. |
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* \param x Data with which new elements should be populated. |
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* \throw std::length_error If n exceeds max_size(). |
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* |
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* This method will resize this vector to the specified number of |
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* elements. If the number is smaller than this vector's current |
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* size this vector is truncated, otherwise this vector is |
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* extended and new elements are populated with given data. |
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*/ |
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void resize(size_type new_size, const value_type &x = value_type()); |
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/*! Returns the number of elements in this vector. |
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*/ |
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size_type size(void) const; |
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/*! Returns the size() of the largest possible vector. |
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* \return The largest possible return value of size(). |
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*/ |
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size_type max_size(void) const; |
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/*! \brief If n is less than or equal to capacity(), this call has no effect. |
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* Otherwise, this method is a request for allocation of additional memory. If |
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* the request is successful, then capacity() is greater than or equal to |
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* n; otherwise, capacity() is unchanged. In either case, size() is unchanged. |
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* \throw std::length_error If n exceeds max_size(). |
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*/ |
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void reserve(size_type n); |
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/*! Returns the number of elements which have been reserved in this |
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* vector. |
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*/ |
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size_type capacity(void) const; |
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/*! This method shrinks the capacity of this vector to exactly |
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* fit its elements. |
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*/ |
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void shrink_to_fit(void); |
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/*! \brief Subscript access to the data contained in this vector_dev. |
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* \param n The index of the element for which data should be accessed. |
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* \return Read/write reference to data. |
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* |
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* This operator allows for easy, array-style, data access. |
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* Note that data access with this operator is unchecked and |
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* out_of_range lookups are not defined. |
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*/ |
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reference operator[](size_type n); |
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/*! \brief Subscript read access to the data contained in this vector_dev. |
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* \param n The index of the element for which data should be accessed. |
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* \return Read reference to data. |
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* |
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* This operator allows for easy, array-style, data access. |
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* Note that data access with this operator is unchecked and |
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* out_of_range lookups are not defined. |
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*/ |
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const_reference operator[](size_type n) const; |
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/*! This method returns an iterator pointing to the beginning of |
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* this vector. |
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* \return mStart |
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*/ |
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iterator begin(void); |
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/*! This method returns a const_iterator pointing to the beginning |
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* of this vector. |
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* \return mStart |
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*/ |
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const_iterator begin(void) const; |
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/*! This method returns a const_iterator pointing to the beginning |
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* of this vector. |
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* \return mStart |
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*/ |
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const_iterator cbegin(void) const; |
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/*! This method returns a reverse_iterator pointing to the beginning of |
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* this vector's reversed sequence. |
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* \return A reverse_iterator pointing to the beginning of this |
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* vector's reversed sequence. |
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*/ |
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reverse_iterator rbegin(void); |
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/*! This method returns a const_reverse_iterator pointing to the beginning of |
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* this vector's reversed sequence. |
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* \return A const_reverse_iterator pointing to the beginning of this |
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* vector's reversed sequence. |
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*/ |
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const_reverse_iterator rbegin(void) const; |
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/*! This method returns a const_reverse_iterator pointing to the beginning of |
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* this vector's reversed sequence. |
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* \return A const_reverse_iterator pointing to the beginning of this |
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* vector's reversed sequence. |
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*/ |
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const_reverse_iterator crbegin(void) const; |
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/*! This method returns an iterator pointing to one element past the |
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* last of this vector. |
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* \return begin() + size(). |
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*/ |
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iterator end(void); |
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/*! This method returns a const_iterator pointing to one element past the |
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* last of this vector. |
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* \return begin() + size(). |
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*/ |
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const_iterator end(void) const; |
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/*! This method returns a const_iterator pointing to one element past the |
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* last of this vector. |
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* \return begin() + size(). |
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*/ |
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const_iterator cend(void) const; |
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/*! This method returns a reverse_iterator pointing to one element past the |
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* last of this vector's reversed sequence. |
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* \return rbegin() + size(). |
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*/ |
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reverse_iterator rend(void); |
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/*! This method returns a const_reverse_iterator pointing to one element past the |
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* last of this vector's reversed sequence. |
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* \return rbegin() + size(). |
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*/ |
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const_reverse_iterator rend(void) const; |
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/*! This method returns a const_reverse_iterator pointing to one element past the |
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* last of this vector's reversed sequence. |
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* \return rbegin() + size(). |
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*/ |
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const_reverse_iterator crend(void) const; |
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/*! This method returns a const_reference referring to the first element of this |
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* vector. |
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* \return The first element of this vector. |
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*/ |
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const_reference front(void) const; |
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/*! This method returns a reference pointing to the first element of this |
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* vector. |
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* \return The first element of this vector. |
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*/ |
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reference front(void); |
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/*! This method returns a const reference pointing to the last element of |
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* this vector. |
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* \return The last element of this vector. |
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*/ |
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const_reference back(void) const; |
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/*! This method returns a reference referring to the last element of |
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* this vector_dev. |
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* \return The last element of this vector. |
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*/ |
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reference back(void); |
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/*! This method returns a pointer to this vector's first element. |
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* \return A pointer to the first element of this vector. |
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*/ |
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pointer data(void); |
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/*! This method returns a const_pointer to this vector's first element. |
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* \return a const_pointer to the first element of this vector. |
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*/ |
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const_pointer data(void) const; |
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/*! This method resizes this vector to 0. |
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*/ |
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void clear(void); |
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/*! This method returns true iff size() == 0. |
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* \return true if size() == 0; false, otherwise. |
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*/ |
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bool empty(void) const; |
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/*! This method appends the given element to the end of this vector. |
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* \param x The element to append. |
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*/ |
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void push_back(const value_type &x); |
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/*! This method erases the last element of this vector, invalidating |
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* all iterators and references to it. |
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*/ |
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void pop_back(void); |
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/*! This method swaps the contents of this vector_base with another vector. |
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* \param v The vector with which to swap. |
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*/ |
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void swap(device_vector &v); |
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/*! This method removes the element at position pos. |
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* \param pos The position of the element of interest. |
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* \return An iterator pointing to the new location of the element that followed the element |
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* at position pos. |
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*/ |
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iterator erase(iterator pos); |
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/*! This method removes the range of elements [first,last) from this vector. |
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* \param first The beginning of the range of elements to remove. |
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* \param last The end of the range of elements to remove. |
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* \return An iterator pointing to the new location of the element that followed the last |
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* element in the sequence [first,last). |
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*/ |
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iterator erase(iterator first, iterator last); |
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/*! This method inserts a single copy of a given exemplar value at the |
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* specified position in this vector. |
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* \param position The insertion position. |
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* \param x The exemplar element to copy & insert. |
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* \return An iterator pointing to the newly inserted element. |
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*/ |
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iterator insert(iterator position, const T &x); |
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/*! This method inserts a copy of an exemplar value to a range at the |
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* specified position in this vector. |
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* \param position The insertion position |
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* \param n The number of insertions to perform. |
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* \param x The value to replicate and insert. |
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*/ |
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void insert(iterator position, size_type n, const T &x); |
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/*! This method inserts a copy of an input range at the specified position |
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* in this vector. |
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* \param position The insertion position. |
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* \param first The beginning of the range to copy. |
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* \param last The end of the range to copy. |
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* |
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* \tparam InputIterator is a model of <a href="http://www.sgi.com/tech/stl/InputIterator.html>Input Iterator</a>, |
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* and \p InputIterator's \c value_type is a model of <a href="http://www.sgi.com/tech/stl/Assignable.html">Assignable</a>. |
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*/ |
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template<typename InputIterator> |
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void insert(iterator position, InputIterator first, InputIterator last); |
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/*! This version of \p assign replicates a given exemplar |
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* \p n times into this vector. |
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* \param n The number of times to copy \p x. |
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* \param x The exemplar element to replicate. |
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*/ |
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void assign(size_type n, const T &x); |
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/*! This version of \p assign makes this vector a copy of a given input range. |
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* \param first The beginning of the range to copy. |
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* \param last The end of the range to copy. |
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* |
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* \tparam InputIterator is a model of <a href="http://www.sgi.com/tech/stl/InputIterator">Input Iterator</a>. |
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*/ |
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template<typename InputIterator> |
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void assign(InputIterator first, InputIterator last); |
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/*! This method returns a copy of this vector's allocator. |
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* \return A copy of the alloctor used by this vector. |
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*/ |
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allocator_type get_allocator(void) const; |
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#endif // end doxygen-only members |
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}; // end device_vector |
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/*! \} |
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*/ |
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} // end thrust |
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#include <thrust/detail/device_vector.inl> |
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