34412ff298
This method has been subsumed by Allocate with vtkm::CopyFlag::On.
959 lines
38 KiB
C++
959 lines
38 KiB
C++
//============================================================================
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// Copyright (c) Kitware, Inc.
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// All rights reserved.
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// See LICENSE.txt for details.
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//
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// This software is distributed WITHOUT ANY WARRANTY; without even
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// the implied warranty of MERCHANTABILITY or FITNESS FOR A PARTICULAR
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// PURPOSE. See the above copyright notice for more information.
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//============================================================================
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#ifndef vtk_m_cont_ArrayHandle_h
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#define vtk_m_cont_ArrayHandle_h
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#include <vtkm/cont/vtkm_cont_export.h>
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#include <vtkm/Assert.h>
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#include <vtkm/Deprecated.h>
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#include <vtkm/Flags.h>
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#include <vtkm/Types.h>
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#include <vtkm/cont/DeviceAdapterList.h>
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#include <vtkm/cont/ErrorBadValue.h>
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#include <vtkm/cont/ErrorInternal.h>
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#include <vtkm/cont/Storage.h>
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#include <vtkm/cont/Token.h>
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#include <vtkm/internal/ArrayPortalHelpers.h>
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#include <algorithm>
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#include <deque>
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#include <iterator>
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#include <memory>
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#include <mutex>
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#include <vector>
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#include <vtkm/cont/internal/Buffer.h>
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namespace vtkm
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{
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namespace cont
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{
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// Normally this would be defined in ArrayHandleBasic.h, but we need this declared early for
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// the default storage.
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/// A tag for the basic implementation of a Storage object.
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struct VTKM_ALWAYS_EXPORT StorageTagBasic
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{
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};
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}
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} // namespace vtkm::cont
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#if VTKM_STORAGE == VTKM_STORAGE_BASIC
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#define VTKM_DEFAULT_STORAGE_TAG ::vtkm::cont::StorageTagBasic
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#elif VTKM_STORAGE == VTKM_STORAGE_ERROR
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#include <vtkm/cont/internal/StorageError.h>
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#define VTKM_DEFAULT_STORAGE_TAG ::vtkm::cont::internal::StorageTagError
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#elif (VTKM_STORAGE == VTKM_STORAGE_UNDEFINED) || !defined(VTKM_STORAGE)
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#ifndef VTKM_DEFAULT_STORAGE_TAG
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#warning If array storage is undefined, VTKM_DEFAULT_STORAGE_TAG must be defined.
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#endif
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#endif
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namespace vtkm
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{
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namespace cont
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{
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namespace internal
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{
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/// \brief Base class of all ArrayHandle classes.
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///
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/// This is an empty class that is used to check if something is an \c
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/// ArrayHandle class (or at least something that behaves exactly like one).
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/// The \c ArrayHandle template class inherits from this.
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///
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class VTKM_CONT_EXPORT ArrayHandleBase
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{
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};
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/// Checks to see if the given type and storage forms a valid array handle
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/// (some storage objects cannot support all types). This check is compatible
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/// with C++11 type_traits.
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///
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template <typename T, typename StorageTag>
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using IsValidArrayHandle =
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std::integral_constant<bool,
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!(std::is_base_of<vtkm::cont::internal::UndefinedStorage,
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vtkm::cont::internal::Storage<T, StorageTag>>::value)>;
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/// Checks to see if the given type and storage forms a invalid array handle
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/// (some storage objects cannot support all types). This check is compatible
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/// with C++11 type_traits.
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///
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template <typename T, typename StorageTag>
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using IsInvalidArrayHandle =
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std::integral_constant<bool, !IsValidArrayHandle<T, StorageTag>::value>;
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/// Checks to see if the ArrayHandle allows writing, as some ArrayHandles
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/// (Implicit) don't support writing. These will be defined as either
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/// std::true_type or std::false_type.
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///
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/// \sa vtkm::internal::PortalSupportsSets
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///
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template <typename ArrayHandle>
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using IsWritableArrayHandle =
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vtkm::internal::PortalSupportsSets<typename std::decay<ArrayHandle>::type::WritePortalType>;
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/// Checks to see if the given object is an array handle. This check is
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/// compatible with C++11 type_traits. It a typedef named \c type that is
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/// either std::true_type or std::false_type. Both of these have a typedef
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/// named value with the respective boolean value.
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///
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/// Unlike \c IsValidArrayHandle, if an \c ArrayHandle is used with this
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/// class, then it must be created by the compiler and therefore must already
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/// be valid. Where \c IsValidArrayHandle is used when you know something is
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/// an \c ArrayHandle but you are not sure if the \c StorageTag is valid, this
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/// class is used to ensure that a given type is an \c ArrayHandle. It is
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/// used internally in the VTKM_IS_ARRAY_HANDLE macro.
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///
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template <typename T>
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struct ArrayHandleCheck
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{
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using U = typename std::remove_pointer<T>::type;
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using type = typename std::is_base_of<::vtkm::cont::internal::ArrayHandleBase, U>::type;
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};
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#define VTKM_IS_ARRAY_HANDLE(T) \
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VTKM_STATIC_ASSERT(::vtkm::cont::internal::ArrayHandleCheck<T>::type::value)
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} // namespace internal
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namespace detail
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{
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template <typename T>
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struct GetTypeInParentheses;
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template <typename T>
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struct GetTypeInParentheses<void(T)>
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{
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using type = T;
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};
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} // namespace detail
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// Implementation for VTKM_ARRAY_HANDLE_SUBCLASS macros
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#define VTK_M_ARRAY_HANDLE_SUBCLASS_IMPL(classname, fullclasstype, superclass, typename__) \
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using Thisclass = typename__ vtkm::cont::detail::GetTypeInParentheses<void fullclasstype>::type; \
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using Superclass = typename__ vtkm::cont::detail::GetTypeInParentheses<void superclass>::type; \
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\
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VTKM_IS_ARRAY_HANDLE(Superclass); \
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\
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VTKM_CONT \
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classname() \
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: Superclass() \
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{ \
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} \
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\
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VTKM_CONT \
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classname(const Thisclass& src) \
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: Superclass(src) \
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{ \
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} \
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\
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VTKM_CONT \
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classname(Thisclass&& src) noexcept \
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: Superclass(std::move(src)) \
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{ \
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} \
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\
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VTKM_CONT \
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classname(const vtkm::cont::ArrayHandle<typename__ Superclass::ValueType, \
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typename__ Superclass::StorageTag>& src) \
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: Superclass(src) \
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{ \
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} \
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\
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VTKM_CONT \
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classname(vtkm::cont::ArrayHandle<typename__ Superclass::ValueType, \
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typename__ Superclass::StorageTag>&& src) noexcept \
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: Superclass(std::move(src)) \
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{ \
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} \
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\
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VTKM_CONT \
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Thisclass& operator=(const Thisclass& src) \
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{ \
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this->Superclass::operator=(src); \
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return *this; \
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} \
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\
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VTKM_CONT \
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Thisclass& operator=(Thisclass&& src) noexcept \
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{ \
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this->Superclass::operator=(std::move(src)); \
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return *this; \
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} \
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\
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using ValueType = typename__ Superclass::ValueType; \
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using StorageTag = typename__ Superclass::StorageTag
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/// \brief Macro to make default methods in ArrayHandle subclasses.
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///
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/// This macro defines the default constructors, destructors and assignment
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/// operators for ArrayHandle subclasses that are templates. The ArrayHandle
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/// subclasses are assumed to be empty convenience classes. The macro should be
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/// defined after a \c public: declaration.
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///
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/// This macro takes three arguments. The first argument is the classname.
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/// The second argument is the full class type. The third argument is the
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/// superclass type (either \c ArrayHandle or another sublcass). Because
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/// C macros do not handle template parameters very well (the preprocessor
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/// thinks the template commas are macro argument commas), the second and
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/// third arguments must be wrapped in parentheses.
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///
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/// This macro also defines a Superclass typedef as well as ValueType and
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/// StorageTag.
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///
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/// Note that this macro only works on ArrayHandle subclasses that are
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/// templated. For ArrayHandle sublcasses that are not templates, use
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/// VTKM_ARRAY_HANDLE_SUBCLASS_NT.
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///
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#define VTKM_ARRAY_HANDLE_SUBCLASS(classname, fullclasstype, superclass) \
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VTK_M_ARRAY_HANDLE_SUBCLASS_IMPL(classname, fullclasstype, superclass, typename)
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/// \brief Macro to make default methods in ArrayHandle subclasses.
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///
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/// This macro defines the default constructors, destructors and assignment
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/// operators for ArrayHandle subclasses that are not templates. The
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/// ArrayHandle subclasses are assumed to be empty convenience classes. The
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/// macro should be defined after a \c public: declaration.
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///
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/// This macro takes two arguments. The first argument is the classname. The
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/// second argument is the superclass type (either \c ArrayHandle or another
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/// sublcass). Because C macros do not handle template parameters very well
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/// (the preprocessor thinks the template commas are macro argument commas),
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/// the second argument must be wrapped in parentheses.
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///
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/// This macro also defines a Superclass typedef as well as ValueType and
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/// StorageTag.
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///
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/// Note that this macro only works on ArrayHandle subclasses that are not
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/// templated. For ArrayHandle sublcasses that are templates, use
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/// VTKM_ARRAY_HANDLE_SUBCLASS.
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///
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#define VTKM_ARRAY_HANDLE_SUBCLASS_NT(classname, superclass) \
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VTK_M_ARRAY_HANDLE_SUBCLASS_IMPL(classname, (classname), superclass, )
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namespace detail
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{
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VTKM_CONT_EXPORT VTKM_CONT void ArrayHandleReleaseResourcesExecution(
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const std::vector<vtkm::cont::internal::Buffer>& buffers);
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VTKM_CONT_EXPORT VTKM_CONT bool ArrayHandleIsOnDevice(
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const std::vector<vtkm::cont::internal::Buffer>& buffers,
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vtkm::cont::DeviceAdapterId device);
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VTKM_CONT_EXPORT VTKM_CONT vtkm::cont::DeviceAdapterId ArrayHandleGetDeviceAdapterId(
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const std::vector<vtkm::cont::internal::Buffer>& buffers);
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} // namespace detail
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/// \brief Manages an array-worth of data.
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///
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/// `ArrayHandle` manages as array of data that can be manipulated by VTKm
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/// algorithms. The `ArrayHandle` may have up to two copies of the array, one
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/// for the control environment and one for the execution environment, although
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/// depending on the device and how the array is being used, the `ArrayHandle`
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/// will only have one copy when possible.
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///
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/// An `ArrayHandle` is often constructed by instantiating one of the `ArrayHandle`
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/// subclasses. Several basic `ArrayHandle` types can also be constructed directly
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/// and then allocated. The `ArrayHandleBasic` subclass provides mechanisms for
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/// importing user arrays into an `ArrayHandle`.
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///
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/// `ArrayHandle` behaves like a shared smart pointer in that when it is copied
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/// each copy holds a reference to the same array. These copies are reference
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/// counted so that when all copies of the `ArrayHandle` are destroyed, any
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/// allocated memory is released.
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///
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template <typename T, typename StorageTag_ = VTKM_DEFAULT_STORAGE_TAG>
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class VTKM_ALWAYS_EXPORT ArrayHandle : public internal::ArrayHandleBase
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{
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VTKM_STATIC_ASSERT_MSG(
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(internal::IsValidArrayHandle<T, StorageTag_>::value),
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"Attempted to create an ArrayHandle with an invalid type/storage combination.");
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public:
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using ValueType = T;
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using StorageTag = StorageTag_;
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using StorageType = vtkm::cont::internal::Storage<ValueType, StorageTag>;
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using ReadPortalType = typename StorageType::ReadPortalType;
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using WritePortalType = typename StorageType::WritePortalType;
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// TODO: Deprecate this
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template <typename Device>
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struct ExecutionTypes
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{
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using Portal = WritePortalType;
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using PortalConst = ReadPortalType;
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};
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using PortalControl VTKM_DEPRECATED(1.6, "Use ArrayHandle::WritePortalType instead.") =
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WritePortalType;
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using PortalConstControl VTKM_DEPRECATED(1.6, "Use ArrayHandle::ReadPortalType instead.") =
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ReadPortalType;
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/// Constructs an empty ArrayHandle.
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///
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VTKM_CONT ArrayHandle()
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: Buffers(static_cast<std::size_t>(StorageType::GetNumberOfBuffers()))
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{
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}
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/// Copy constructor.
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///
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/// Implemented so that it is defined exclusively in the control environment.
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/// If there is a separate device for the execution environment (for example,
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/// with CUDA), then the automatically generated copy constructor could be
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/// created for all devices, and it would not be valid for all devices.
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///
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VTKM_CONT ArrayHandle(const vtkm::cont::ArrayHandle<ValueType, StorageTag>& src)
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: Buffers(src.Buffers)
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{
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}
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/// Move constructor.
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///
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/// Implemented so that it is defined exclusively in the control environment.
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/// If there is a separate device for the execution environment (for example,
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/// with CUDA), then the automatically generated move constructor could be
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/// created for all devices, and it would not be valid for all devices.
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///
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VTKM_CONT ArrayHandle(vtkm::cont::ArrayHandle<ValueType, StorageTag>&& src) noexcept
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: Buffers(std::move(src.Buffers))
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{
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}
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///@{
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/// Special constructor for subclass specializations that need to set the
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/// initial state array. Used when pulling data from other sources.
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///
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VTKM_CONT ArrayHandle(const std::vector<vtkm::cont::internal::Buffer>& buffers)
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: Buffers(buffers)
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{
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VTKM_ASSERT(static_cast<vtkm::IdComponent>(this->Buffers.size()) == this->GetNumberOfBuffers());
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}
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VTKM_CONT ArrayHandle(std::vector<vtkm::cont::internal::Buffer>&& buffers) noexcept
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: Buffers(std::move(buffers))
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{
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VTKM_ASSERT(static_cast<vtkm::IdComponent>(this->Buffers.size()) == this->GetNumberOfBuffers());
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}
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VTKM_CONT ArrayHandle(const vtkm::cont::internal::Buffer* buffers)
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: Buffers(buffers, buffers + StorageType::GetNumberOfBuffers())
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{
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}
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///@}
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/// Destructs an empty ArrayHandle.
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///
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/// Implemented so that it is defined exclusively in the control environment.
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/// If there is a separate device for the execution environment (for example,
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/// with CUDA), then the automatically generated destructor could be
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/// created for all devices, and it would not be valid for all devices.
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///
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VTKM_CONT ~ArrayHandle() {}
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/// \brief Copies an ArrayHandle
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///
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VTKM_CONT
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vtkm::cont::ArrayHandle<ValueType, StorageTag>& operator=(
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const vtkm::cont::ArrayHandle<ValueType, StorageTag>& src)
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{
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this->Buffers = src.Buffers;
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return *this;
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}
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/// \brief Move and Assignment of an ArrayHandle
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///
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VTKM_CONT
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vtkm::cont::ArrayHandle<ValueType, StorageTag>& operator=(
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vtkm::cont::ArrayHandle<ValueType, StorageTag>&& src) noexcept
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{
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this->Buffers = std::move(src.Buffers);
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return *this;
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}
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/// Like a pointer, two \c ArrayHandles are considered equal if they point
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/// to the same location in memory.
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///
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VTKM_CONT
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bool operator==(const ArrayHandle<ValueType, StorageTag>& rhs) const
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{
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return this->Buffers == rhs.Buffers;
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}
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VTKM_CONT
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bool operator!=(const ArrayHandle<ValueType, StorageTag>& rhs) const
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{
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return this->Buffers != rhs.Buffers;
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}
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template <typename VT, typename ST>
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VTKM_CONT bool operator==(const ArrayHandle<VT, ST>&) const
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{
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return false; // different valuetype and/or storage
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}
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template <typename VT, typename ST>
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VTKM_CONT bool operator!=(const ArrayHandle<VT, ST>&) const
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{
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return true; // different valuetype and/or storage
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}
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VTKM_CONT static constexpr vtkm::IdComponent GetNumberOfBuffers()
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{
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return StorageType::GetNumberOfBuffers();
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}
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/// Get the storage.
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///
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VTKM_CONT StorageType GetStorage() const { return StorageType{}; }
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/// Get the array portal of the control array.
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/// Since worklet invocations are asynchronous and this routine is a synchronization point,
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/// exceptions maybe thrown for errors from previously executed worklets.
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///
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/// \deprecated Use `WritePortal` instead.
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///
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VTKM_CONT
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VTKM_DEPRECATED(1.6,
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"Use ArrayHandle::WritePortal() instead. "
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"Note that the returned portal will lock the array while it is in scope.")
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/// \cond NOPE
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WritePortalType GetPortalControl() const { return this->WritePortal(); }
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/// \endcond
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/// Get the array portal of the control array.
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/// Since worklet invocations are asynchronous and this routine is a synchronization point,
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/// exceptions maybe thrown for errors from previously executed worklets.
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///
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/// \deprecated Use `ReadPortal` instead.
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///
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VTKM_CONT
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VTKM_DEPRECATED(1.6,
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"Use ArrayHandle::ReadPortal() instead. "
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"Note that the returned portal will lock the array while it is in scope.")
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/// \cond NOPE
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ReadPortalType GetPortalConstControl() const { return this->ReadPortal(); }
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/// \endcond
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/// \brief Get an array portal that can be used in the control environment.
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///
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/// The returned array can be used in the control environment to read values from the array. (It
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/// is not possible to write to the returned portal. That is `Get` will work on the portal, but
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/// `Set` will not.)
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///
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/// **Note:** The returned portal cannot be used in the execution environment. This is because
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/// the portal will not work on some devices like GPUs. To get a portal that will work in the
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/// execution environment, use `PrepareForInput`.
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///
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VTKM_CONT ReadPortalType ReadPortal() const
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{
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vtkm::cont::Token token;
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return StorageType::CreateReadPortal(
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this->GetBuffers(), vtkm::cont::DeviceAdapterTagUndefined{}, token);
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}
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/// \brief Get an array portal that can be used in the control environment.
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///
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/// The returned array can be used in the control environment to reand and write values to the
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/// array.
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///
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/// **Note:** The returned portal cannot be used in the execution environment. This is because
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/// the portal will not work on some devices like GPUs. To get a portal that will work in the
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/// execution environment, use `PrepareForInput`.
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///
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VTKM_CONT WritePortalType WritePortal() const
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{
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vtkm::cont::Token token;
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return StorageType::CreateWritePortal(
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this->GetBuffers(), vtkm::cont::DeviceAdapterTagUndefined{}, token);
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}
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/// Returns the number of entries in the array.
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///
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VTKM_CONT vtkm::Id GetNumberOfValues() const
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{
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return StorageType::GetNumberOfValues(this->GetBuffers());
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}
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///@{
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/// \brief Allocates an array large enough to hold the given number of values.
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///
|
|
/// The allocation may be done on an already existing array. If so, then the data
|
|
/// are preserved as best as possible if the preserve flag is set to `vtkm::CopyFlag::On`.
|
|
/// If the preserve flag is set to `vtkm::CopyFlag::Off` (the default), any existing data
|
|
/// could be wiped out.
|
|
///
|
|
/// This method can throw `ErrorBadAllocation` if the array cannot be allocated or
|
|
/// `ErrorBadValue` if the allocation is not feasible (for example, the
|
|
/// array storage is read-only).
|
|
///
|
|
VTKM_CONT void Allocate(vtkm::Id numberOfValues,
|
|
vtkm::CopyFlag preserve,
|
|
vtkm::cont::Token& token)
|
|
{
|
|
StorageType::ResizeBuffers(numberOfValues, this->GetBuffers(), preserve, token);
|
|
}
|
|
|
|
VTKM_CONT void Allocate(vtkm::Id numberOfValues, vtkm::CopyFlag preserve = vtkm::CopyFlag::Off)
|
|
{
|
|
vtkm::cont::Token token;
|
|
this->Allocate(numberOfValues, preserve, token);
|
|
}
|
|
///@}
|
|
|
|
VTKM_DEPRECATED(1.6, "Use Allocate(n, vtkm::CopyFlag::On) instead of Shrink(n).")
|
|
VTKM_CONT void Shrink(vtkm::Id numberOfValues)
|
|
{
|
|
this->Allocate(numberOfValues, vtkm::CopyFlag::On);
|
|
}
|
|
|
|
/// Releases any resources being used in the execution environment (that are
|
|
/// not being shared by the control environment).
|
|
///
|
|
VTKM_CONT void ReleaseResourcesExecution() const
|
|
{
|
|
detail::ArrayHandleReleaseResourcesExecution(this->Buffers);
|
|
}
|
|
|
|
/// Releases all resources in both the control and execution environments.
|
|
///
|
|
VTKM_CONT void ReleaseResources() { this->Allocate(0); }
|
|
|
|
/// Prepares this array to be used as an input to an operation in the
|
|
/// execution environment. If necessary, copies data to the execution
|
|
/// environment. Can throw an exception if this array does not yet contain
|
|
/// any data. Returns a portal that can be used in code running in the
|
|
/// execution environment.
|
|
///
|
|
/// The `Token` object provided will be attached to this `ArrayHandle`.
|
|
/// The returned portal is guaranteed to be valid while the `Token` is
|
|
/// still attached and in scope. Other operations on this `ArrayHandle`
|
|
/// that would invalidate the returned portal will block until the `Token`
|
|
/// is released. Likewise, this method will block if another `Token` is
|
|
/// already attached. This can potentially lead to deadlocks.
|
|
///
|
|
VTKM_CONT ReadPortalType PrepareForInput(vtkm::cont::DeviceAdapterId device,
|
|
vtkm::cont::Token& token) const
|
|
{
|
|
return StorageType::CreateReadPortal(this->GetBuffers(), device, token);
|
|
}
|
|
|
|
/// Prepares this array to be used in an in-place operation (both as input
|
|
/// and output) in the execution environment. If necessary, copies data to
|
|
/// the execution environment. Can throw an exception if this array does not
|
|
/// yet contain any data. Returns a portal that can be used in code running
|
|
/// in the execution environment.
|
|
///
|
|
/// The `Token` object provided will be attached to this `ArrayHandle`.
|
|
/// The returned portal is guaranteed to be valid while the `Token` is
|
|
/// still attached and in scope. Other operations on this `ArrayHandle`
|
|
/// that would invalidate the returned portal will block until the `Token`
|
|
/// is released. Likewise, this method will block if another `Token` is
|
|
/// already attached. This can potentially lead to deadlocks.
|
|
///
|
|
VTKM_CONT WritePortalType PrepareForInPlace(vtkm::cont::DeviceAdapterId device,
|
|
vtkm::cont::Token& token) const
|
|
{
|
|
return StorageType::CreateWritePortal(this->GetBuffers(), device, token);
|
|
}
|
|
|
|
/// Prepares (allocates) this array to be used as an output from an operation
|
|
/// in the execution environment. The internal state of this class is set to
|
|
/// have valid data in the execution array with the assumption that the array
|
|
/// will be filled soon (i.e. before any other methods of this object are
|
|
/// called). Returns a portal that can be used in code running in the
|
|
/// execution environment.
|
|
///
|
|
/// The `Token` object provided will be attached to this `ArrayHandle`.
|
|
/// The returned portal is guaranteed to be valid while the `Token` is
|
|
/// still attached and in scope. Other operations on this `ArrayHandle`
|
|
/// that would invalidate the returned portal will block until the `Token`
|
|
/// is released. Likewise, this method will block if another `Token` is
|
|
/// already attached. This can potentially lead to deadlocks.
|
|
///
|
|
VTKM_CONT WritePortalType PrepareForOutput(vtkm::Id numberOfValues,
|
|
vtkm::cont::DeviceAdapterId device,
|
|
vtkm::cont::Token& token)
|
|
{
|
|
this->Allocate(numberOfValues, vtkm::CopyFlag::Off, token);
|
|
return StorageType::CreateWritePortal(this->GetBuffers(), device, token);
|
|
}
|
|
|
|
VTKM_CONT VTKM_DEPRECATED(1.6, "PrepareForInput now requires a vtkm::cont::Token object.")
|
|
ReadPortalType PrepareForInput(vtkm::cont::DeviceAdapterId device) const
|
|
{
|
|
vtkm::cont::Token token;
|
|
return this->PrepareForInput(device, token);
|
|
}
|
|
VTKM_CONT VTKM_DEPRECATED(1.6, "PrepareForOutput now requires a vtkm::cont::Token object.")
|
|
WritePortalType PrepareForOutput(vtkm::Id numberOfValues, vtkm::cont::DeviceAdapterId device)
|
|
{
|
|
vtkm::cont::Token token;
|
|
return this->PrepareForOutput(numberOfValues, device, token);
|
|
}
|
|
VTKM_CONT VTKM_DEPRECATED(1.6, "PrepareForInPlace now requires a vtkm::cont::Token object.")
|
|
WritePortalType PrepareForInPlace(vtkm::cont::DeviceAdapterId device) const
|
|
{
|
|
vtkm::cont::Token token;
|
|
return this->PrepareForInPlace(device, token);
|
|
}
|
|
|
|
/// Returns true if the ArrayHandle's data is on the given device. If the data are on the given
|
|
/// device, then preparing for that device should not require any data movement.
|
|
///
|
|
VTKM_CONT bool IsOnDevice(vtkm::cont::DeviceAdapterId device) const
|
|
{
|
|
return detail::ArrayHandleIsOnDevice(this->Buffers, device);
|
|
}
|
|
|
|
/// Returns true if the ArrayHandle's data is on the host. If the data are on the given
|
|
/// device, then calling `ReadPortal` or `WritePortal` should not require any data movement.
|
|
///
|
|
VTKM_CONT bool IsOnHost() const
|
|
{
|
|
return this->IsOnDevice(vtkm::cont::DeviceAdapterTagUndefined{});
|
|
}
|
|
|
|
/// Returns a DeviceAdapterId for a device currently allocated on. If there is no device
|
|
/// with an up-to-date copy of the data, VTKM_DEVICE_ADAPTER_UNDEFINED is
|
|
/// returned.
|
|
///
|
|
/// Note that in a multithreaded environment the validity of this result can
|
|
/// change.
|
|
///
|
|
/// TODO: Deprecate this method in favor of IsOnDevice since the data can be on multiple
|
|
/// devices at once.
|
|
VTKM_CONT
|
|
DeviceAdapterId GetDeviceAdapterId() const
|
|
{
|
|
return detail::ArrayHandleGetDeviceAdapterId(this->Buffers);
|
|
}
|
|
|
|
/// Synchronizes the control array with the execution array. If either the
|
|
/// user array or control array is already valid, this method does nothing
|
|
/// (because the data is already available in the control environment).
|
|
/// Although the internal state of this class can change, the method is
|
|
/// declared const because logically the data does not.
|
|
///
|
|
VTKM_CONT void SyncControlArray() const
|
|
{
|
|
// Creating a host read portal will force the data to be synced to the host.
|
|
this->ReadPortal();
|
|
}
|
|
|
|
/// \brief Enqueue a token for access to this ArrayHandle.
|
|
///
|
|
/// This method places the given `Token` into the queue of `Token`s waiting for
|
|
/// access to this `ArrayHandle` and then returns immediately. When this token
|
|
/// is later used to get data from this `ArrayHandle` (for example, in a call to
|
|
/// `PrepareForInput`), it will use this place in the queue while waiting for
|
|
/// access.
|
|
///
|
|
/// This method is to be used to ensure that a set of accesses to an `ArrayHandle`
|
|
/// that happen on multiple threads occur in a specified order. For example, if
|
|
/// you spawn of a job to modify data in an `ArrayHandle` and then spawn off a job
|
|
/// that reads that same data, you need to make sure that the first job gets
|
|
/// access to the `ArrayHandle` before the second. If they both just attempt to call
|
|
/// their respective `Prepare` methods, there is no guarantee which order they
|
|
/// will occur. Having the spawning thread first call this method will ensure the order.
|
|
///
|
|
/// \warning After calling this method it is required to subsequently
|
|
/// call a method like one of the `Prepare` methods that attaches the token
|
|
/// to this `ArrayHandle`. Otherwise, the enqueued token will block any subsequent
|
|
/// access to the `ArrayHandle`, even if the `Token` is destroyed.
|
|
///
|
|
VTKM_CONT void Enqueue(const vtkm::cont::Token& token) const
|
|
{
|
|
for (auto&& buffer : this->Buffers)
|
|
{
|
|
buffer.Enqueue(token);
|
|
}
|
|
}
|
|
|
|
/// \brief Deep copies the data in the array.
|
|
///
|
|
/// Takes the data that is in \a source and copies that data into this array.
|
|
///
|
|
VTKM_CONT void DeepCopyFrom(const vtkm::cont::ArrayHandle<ValueType, StorageTag>& source) const
|
|
{
|
|
VTKM_ASSERT(this->Buffers.size() == source.Buffers.size());
|
|
|
|
for (std::size_t bufferIndex = 0; bufferIndex < this->Buffers.size(); ++bufferIndex)
|
|
{
|
|
this->Buffers[bufferIndex].DeepCopyFrom(source.Buffers[bufferIndex]);
|
|
}
|
|
}
|
|
|
|
/// Returns the internal `Buffer` structures that hold the data.
|
|
///
|
|
VTKM_CONT vtkm::cont::internal::Buffer* GetBuffers() const { return this->Buffers.data(); }
|
|
|
|
private:
|
|
mutable std::vector<vtkm::cont::internal::Buffer> Buffers;
|
|
|
|
protected:
|
|
VTKM_CONT void SetBuffer(vtkm::IdComponent index, const vtkm::cont::internal::Buffer& buffer)
|
|
{
|
|
this->Buffers[static_cast<std::size_t>(index)] = buffer;
|
|
}
|
|
|
|
// BufferContainer must be an iteratable container of Buffer objects.
|
|
template <typename BufferContainer>
|
|
VTKM_CONT void SetBuffers(const BufferContainer& buffers)
|
|
{
|
|
std::copy(buffers.begin(), buffers.end(), this->Iterators->Buffers.begin());
|
|
}
|
|
};
|
|
|
|
namespace detail
|
|
{
|
|
|
|
template <typename T>
|
|
VTKM_NEVER_EXPORT VTKM_CONT inline void
|
|
printSummary_ArrayHandle_Value(const T& value, std::ostream& out, vtkm::VecTraitsTagSingleComponent)
|
|
{
|
|
out << value;
|
|
}
|
|
|
|
VTKM_NEVER_EXPORT
|
|
VTKM_CONT
|
|
inline void printSummary_ArrayHandle_Value(vtkm::UInt8 value,
|
|
std::ostream& out,
|
|
vtkm::VecTraitsTagSingleComponent)
|
|
{
|
|
out << static_cast<int>(value);
|
|
}
|
|
|
|
VTKM_NEVER_EXPORT
|
|
VTKM_CONT
|
|
inline void printSummary_ArrayHandle_Value(vtkm::Int8 value,
|
|
std::ostream& out,
|
|
vtkm::VecTraitsTagSingleComponent)
|
|
{
|
|
out << static_cast<int>(value);
|
|
}
|
|
|
|
template <typename T>
|
|
VTKM_NEVER_EXPORT VTKM_CONT inline void printSummary_ArrayHandle_Value(
|
|
const T& value,
|
|
std::ostream& out,
|
|
vtkm::VecTraitsTagMultipleComponents)
|
|
{
|
|
using Traits = vtkm::VecTraits<T>;
|
|
using ComponentType = typename Traits::ComponentType;
|
|
using IsVecOfVec = typename vtkm::VecTraits<ComponentType>::HasMultipleComponents;
|
|
vtkm::IdComponent numComponents = Traits::GetNumberOfComponents(value);
|
|
out << "(";
|
|
printSummary_ArrayHandle_Value(Traits::GetComponent(value, 0), out, IsVecOfVec());
|
|
for (vtkm::IdComponent index = 1; index < numComponents; ++index)
|
|
{
|
|
out << ",";
|
|
printSummary_ArrayHandle_Value(Traits::GetComponent(value, index), out, IsVecOfVec());
|
|
}
|
|
out << ")";
|
|
}
|
|
|
|
template <typename T1, typename T2>
|
|
VTKM_NEVER_EXPORT VTKM_CONT inline void printSummary_ArrayHandle_Value(
|
|
const vtkm::Pair<T1, T2>& value,
|
|
std::ostream& out,
|
|
vtkm::VecTraitsTagSingleComponent)
|
|
{
|
|
out << "{";
|
|
printSummary_ArrayHandle_Value(
|
|
value.first, out, typename vtkm::VecTraits<T1>::HasMultipleComponents());
|
|
out << ",";
|
|
printSummary_ArrayHandle_Value(
|
|
value.second, out, typename vtkm::VecTraits<T2>::HasMultipleComponents());
|
|
out << "}";
|
|
}
|
|
|
|
|
|
|
|
} // namespace detail
|
|
|
|
template <typename T, typename StorageT>
|
|
VTKM_NEVER_EXPORT VTKM_CONT inline void printSummary_ArrayHandle(
|
|
const vtkm::cont::ArrayHandle<T, StorageT>& array,
|
|
std::ostream& out,
|
|
bool full = false)
|
|
{
|
|
using ArrayType = vtkm::cont::ArrayHandle<T, StorageT>;
|
|
using PortalType = typename ArrayType::ReadPortalType;
|
|
using IsVec = typename vtkm::VecTraits<T>::HasMultipleComponents;
|
|
|
|
vtkm::Id sz = array.GetNumberOfValues();
|
|
|
|
out << "valueType=" << vtkm::cont::TypeToString<T>()
|
|
<< " storageType=" << vtkm::cont::TypeToString<StorageT>() << " " << sz
|
|
<< " values occupying " << (static_cast<size_t>(sz) * sizeof(T)) << " bytes [";
|
|
|
|
PortalType portal = array.ReadPortal();
|
|
if (full || sz <= 7)
|
|
{
|
|
for (vtkm::Id i = 0; i < sz; i++)
|
|
{
|
|
detail::printSummary_ArrayHandle_Value(portal.Get(i), out, IsVec());
|
|
if (i != (sz - 1))
|
|
{
|
|
out << " ";
|
|
}
|
|
}
|
|
}
|
|
else
|
|
{
|
|
detail::printSummary_ArrayHandle_Value(portal.Get(0), out, IsVec());
|
|
out << " ";
|
|
detail::printSummary_ArrayHandle_Value(portal.Get(1), out, IsVec());
|
|
out << " ";
|
|
detail::printSummary_ArrayHandle_Value(portal.Get(2), out, IsVec());
|
|
out << " ... ";
|
|
detail::printSummary_ArrayHandle_Value(portal.Get(sz - 3), out, IsVec());
|
|
out << " ";
|
|
detail::printSummary_ArrayHandle_Value(portal.Get(sz - 2), out, IsVec());
|
|
out << " ";
|
|
detail::printSummary_ArrayHandle_Value(portal.Get(sz - 1), out, IsVec());
|
|
}
|
|
out << "]\n";
|
|
}
|
|
|
|
namespace internal
|
|
{
|
|
|
|
namespace detail
|
|
{
|
|
|
|
VTKM_CONT inline void CreateBuffersImpl(std::vector<vtkm::cont::internal::Buffer>&)
|
|
{
|
|
// Nothing left to add.
|
|
}
|
|
|
|
template <typename T, typename S, typename... Args>
|
|
VTKM_CONT inline void CreateBuffersImpl(std::vector<vtkm::cont::internal::Buffer>& buffers,
|
|
const vtkm::cont::ArrayHandle<T, S>& array,
|
|
const Args&... args)
|
|
{
|
|
vtkm::cont::internal::Buffer* arrayBuffers = array.GetBuffers();
|
|
buffers.insert(buffers.end(), arrayBuffers, arrayBuffers + array.GetNumberOfBuffers());
|
|
CreateBuffersImpl(buffers, args...);
|
|
}
|
|
|
|
template <typename... Args>
|
|
VTKM_CONT inline void CreateBuffersImpl(std::vector<vtkm::cont::internal::Buffer>& buffers,
|
|
const vtkm::cont::internal::Buffer& buffer,
|
|
const Args&... args)
|
|
{
|
|
buffers.push_back(buffer);
|
|
CreateBuffersImpl(buffers, args...);
|
|
}
|
|
|
|
template <typename... Args>
|
|
VTKM_CONT inline void CreateBuffersImpl(std::vector<vtkm::cont::internal::Buffer>& buffers,
|
|
const std::vector<vtkm::cont::internal::Buffer>& addbuffs,
|
|
const Args&... args)
|
|
{
|
|
buffers.insert(buffers.end(), addbuffs.begin(), addbuffs.end());
|
|
CreateBuffersImpl(buffers, args...);
|
|
}
|
|
|
|
template <typename Arg0, typename... Args>
|
|
VTKM_CONT inline void CreateBuffersImpl(std::vector<vtkm::cont::internal::Buffer>& buffers,
|
|
const Arg0& arg0,
|
|
const Args&... args);
|
|
|
|
template <typename T, typename S, typename... Args>
|
|
VTKM_CONT inline void CreateBuffersResolveArrays(std::vector<vtkm::cont::internal::Buffer>& buffers,
|
|
std::true_type,
|
|
const vtkm::cont::ArrayHandle<T, S>& array,
|
|
const Args&... args)
|
|
{
|
|
CreateBuffersImpl(buffers, array, args...);
|
|
}
|
|
|
|
template <typename MetaData, typename... Args>
|
|
VTKM_CONT inline void CreateBuffersResolveArrays(std::vector<vtkm::cont::internal::Buffer>& buffers,
|
|
std::false_type,
|
|
const MetaData& metadata,
|
|
const Args&... args)
|
|
{
|
|
vtkm::cont::internal::Buffer buffer;
|
|
buffer.SetMetaData(metadata);
|
|
buffers.push_back(std::move(buffer));
|
|
CreateBuffersImpl(buffers, args...);
|
|
}
|
|
|
|
template <typename Arg0, typename... Args>
|
|
VTKM_CONT inline void CreateBuffersImpl(std::vector<vtkm::cont::internal::Buffer>& buffers,
|
|
const Arg0& arg0,
|
|
const Args&... args)
|
|
{
|
|
// If the argument is a subclass of ArrayHandle, the template resolution will pick this
|
|
// overload instead of the correct ArrayHandle overload. To resolve that, check to see
|
|
// if the type is an `ArrayHandle` and use `CreateBuffersResolveArrays` to choose the
|
|
// right path.
|
|
using IsArray = typename vtkm::cont::internal::ArrayHandleCheck<Arg0>::type::type;
|
|
CreateBuffersResolveArrays(buffers, IsArray{}, arg0, args...);
|
|
}
|
|
|
|
} // namespace detail
|
|
|
|
/// \brief Create the buffers for an `ArrayHandle` specialization.
|
|
///
|
|
/// When creating an `ArrayHandle` specialization, it is important to build a
|
|
/// `std::vector` of `Buffer` objects. This function simplifies creating
|
|
/// these buffer objects. Simply pass as arguments the things you want in the
|
|
/// buffers. The parameters to `CreateBuffers` are added to the `Buffer` `vector`
|
|
/// in the order provided. The actual object(s) added depends on the type of
|
|
/// parameter:
|
|
///
|
|
/// - `ArrayHandle`: The buffers from the `ArrayHandle` are added to the list.
|
|
/// - `Buffer`: A copy of the buffer is added to the list.
|
|
/// - `std::vector<Buffer>`: A copy of all buffers in this vector are added to the list.
|
|
/// - Anything else: A buffer with the given object attached as metadata is
|
|
///
|
|
template <typename... Args>
|
|
VTKM_CONT inline std::vector<vtkm::cont::internal::Buffer> CreateBuffers(const Args&... args)
|
|
{
|
|
std::vector<vtkm::cont::internal::Buffer> buffers;
|
|
buffers.reserve(sizeof...(args));
|
|
detail::CreateBuffersImpl(buffers, args...);
|
|
return buffers;
|
|
}
|
|
|
|
} // namespace internal
|
|
|
|
}
|
|
} //namespace vtkm::cont
|
|
|
|
#ifndef vtk_m_cont_ArrayHandleBasic_h
|
|
#include <vtkm/cont/ArrayHandleBasic.h>
|
|
#endif
|
|
|
|
#endif //vtk_m_cont_ArrayHandle_h
|