f601e38ba8
Remove the ErrorControl class such that all subclasses now inherit from error. Renamed all exception classes via s/ErrorControl/Error/. See issue #57.
254 lines
8.7 KiB
C++
Executable File
254 lines
8.7 KiB
C++
Executable File
//============================================================================
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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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// 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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// Copyright 2014 Sandia Corporation.
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// Copyright 2014 UT-Battelle, LLC.
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// Copyright 2014 Los Alamos National Security.
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//
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// Under the terms of Contract DE-AC04-94AL85000 with Sandia Corporation,
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// the U.S. Government retains certain rights in this software.
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//
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// Under the terms of Contract DE-AC52-06NA25396 with Los Alamos National
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// Laboratory (LANL), the U.S. Government retains certain rights in
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// this software.
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//============================================================================
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#ifndef vtk_m_cont_StorageBasic_h
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#define vtk_m_cont_StorageBasic_h
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#include <vtkm/Assert.h>
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#include <vtkm/Types.h>
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#include <vtkm/cont/ErrorBadValue.h>
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#include <vtkm/cont/ErrorBadAllocation.h>
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#include <vtkm/cont/Storage.h>
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#include <vtkm/cont/internal/ArrayPortalFromIterators.h>
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// Defines the cache line size in bytes to align allocations to
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#ifndef VTKM_CACHE_LINE_SIZE
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#define VTKM_CACHE_LINE_SIZE 64
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#endif
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namespace vtkm {
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namespace cont {
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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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namespace internal {
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VTKM_CONT_EXPORT
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void* alloc_aligned(size_t size, size_t align);
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VTKM_CONT_EXPORT
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void free_aligned(void *mem);
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/// A simple aligned allocator type that will align allocations to `Alignment` bytes
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/// TODO: Once C++11 std::allocator_traits is better used by STL and we want to drop
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/// support for pre-C++11 we can drop a lot of the typedefs and functions here.
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template<typename T, size_t Alignment>
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struct AlignedAllocator {
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typedef T value_type;
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typedef T& reference;
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typedef const T& const_reference;
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typedef T* pointer;
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typedef const T* const_pointer;
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typedef void* void_pointer;
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typedef const void* const_void_pointer;
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typedef std::ptrdiff_t difference_type;
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typedef std::size_t size_type;
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template<typename U>
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struct rebind {
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typedef AlignedAllocator<U, Alignment> other;
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};
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AlignedAllocator(){}
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template<typename Tb>
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AlignedAllocator(const AlignedAllocator<Tb, Alignment>&){}
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pointer allocate(size_t n){
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return static_cast<pointer>(alloc_aligned(n * sizeof(T), Alignment));
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}
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void deallocate(pointer p, size_t){
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free_aligned(static_cast<void*>(p));
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}
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pointer address(reference r){
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return &r;
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}
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const_pointer address(const_reference r){
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return &r;
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}
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size_type max_size() const {
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return (std::numeric_limits<size_type>::max)() / sizeof(T);
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}
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void construct(pointer p, const T &t){
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new(p) T(t);
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}
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void destroy(pointer p){
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p->~T();
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}
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};
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template<typename T, typename U, size_t AlignA, size_t AlignB>
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bool operator==(const AlignedAllocator<T, AlignA>&, const AlignedAllocator<U, AlignB>&){
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return AlignA == AlignB;
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}
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template<typename T, typename U, size_t AlignA, size_t AlignB>
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bool operator!=(const AlignedAllocator<T, AlignA>&, const AlignedAllocator<U, AlignB>&){
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return AlignA != AlignB;
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}
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/// A basic implementation of an Storage object.
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///
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/// \todo This storage does \em not construct the values within the array.
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/// Thus, it is important to not use this class with any type that will fail if
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/// not constructed. These are things like basic types (int, float, etc.) and
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/// the VTKm Tuple classes. In the future it would be nice to have a compile
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/// time check to enforce this.
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///
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template <typename ValueT>
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class VTKM_ALWAYS_EXPORT Storage<ValueT, vtkm::cont::StorageTagBasic>
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{
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public:
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typedef ValueT ValueType;
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typedef vtkm::cont::internal::ArrayPortalFromIterators<ValueType*> PortalType;
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typedef vtkm::cont::internal::ArrayPortalFromIterators<const ValueType*> PortalConstType;
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/// The original design of this class provided an allocator as a template
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/// parameters. That messed things up, though, because other templated
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/// classes assume that the \c Storage has one template parameter. There are
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/// other ways to allow you to specify the allocator, but it is uncertain
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/// whether that would ever be useful. So, instead of jumping through hoops
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/// implementing them, just fix the allocator for now.
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///
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typedef AlignedAllocator<ValueType, VTKM_CACHE_LINE_SIZE> AllocatorType;
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public:
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VTKM_CONT
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Storage(const ValueType *array = nullptr, vtkm::Id numberOfValues = 0);
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VTKM_CONT
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~Storage();
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VTKM_CONT
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Storage(const Storage<ValueType, StorageTagBasic> &src);
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VTKM_CONT
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Storage &operator=(const Storage<ValueType, StorageTagBasic> &src);
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VTKM_CONT
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void ReleaseResources();
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VTKM_CONT
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void Allocate(vtkm::Id numberOfValues);
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VTKM_CONT
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vtkm::Id GetNumberOfValues() const
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{
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return this->NumberOfValues;
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}
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VTKM_CONT
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void Shrink(vtkm::Id numberOfValues);
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VTKM_CONT
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PortalType GetPortal()
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{
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return PortalType(this->Array, this->Array + this->NumberOfValues);
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}
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VTKM_CONT
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PortalConstType GetPortalConst() const
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{
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return PortalConstType(this->Array, this->Array + this->NumberOfValues);
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}
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/// \brief Get a pointer to the underlying data structure.
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///
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/// This method returns the pointer to the array held by this array. The
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/// memory associated with this array still belongs to the Storage (i.e.
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/// Storage will eventually deallocate the array).
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///
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VTKM_CONT
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ValueType *GetArray()
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{
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return this->Array;
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}
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VTKM_CONT
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const ValueType *GetArray() const
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{
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return this->Array;
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}
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/// \brief Take the reference away from this object.
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///
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/// This method returns the pointer to the array held by this array. It then
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/// clears the internal array pointer to nullptr, thereby ensuring that the
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/// Storage will never deallocate the array. This is helpful for taking a
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/// reference for an array created internally by VTK-m and not having to keep
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/// a VTK-m object around. Obviously the caller becomes responsible for
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/// destroying the memory.
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///
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VTKM_CONT
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ValueType *StealArray();
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private:
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ValueType *Array;
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vtkm::Id NumberOfValues;
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vtkm::Id AllocatedSize;
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bool DeallocateOnRelease;
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bool UserProvidedMemory;
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};
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} // namespace internal
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}
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} // namespace vtkm::cont
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#ifndef vtkm_cont_StorageBasic_cxx
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namespace vtkm {
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namespace cont {
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namespace internal {
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extern template class VTKM_CONT_TEMPLATE_EXPORT Storage<char, StorageTagBasic>;
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extern template class VTKM_CONT_TEMPLATE_EXPORT Storage<vtkm::Int8, StorageTagBasic>;
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extern template class VTKM_CONT_TEMPLATE_EXPORT Storage<vtkm::UInt8, StorageTagBasic>;
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extern template class VTKM_CONT_TEMPLATE_EXPORT Storage<vtkm::Int16, StorageTagBasic>;
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extern template class VTKM_CONT_TEMPLATE_EXPORT Storage<vtkm::UInt16, StorageTagBasic>;
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extern template class VTKM_CONT_TEMPLATE_EXPORT Storage<vtkm::Int32, StorageTagBasic>;
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extern template class VTKM_CONT_TEMPLATE_EXPORT Storage<vtkm::UInt32, StorageTagBasic>;
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extern template class VTKM_CONT_TEMPLATE_EXPORT Storage<vtkm::Int64, StorageTagBasic>;
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extern template class VTKM_CONT_TEMPLATE_EXPORT Storage<vtkm::UInt64, StorageTagBasic>;
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extern template class VTKM_CONT_TEMPLATE_EXPORT Storage<vtkm::Float32, StorageTagBasic>;
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extern template class VTKM_CONT_TEMPLATE_EXPORT Storage<vtkm::Float64, StorageTagBasic>;
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extern template class VTKM_CONT_TEMPLATE_EXPORT Storage< vtkm::Vec<vtkm::Int64,2>, StorageTagBasic>;
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extern template class VTKM_CONT_TEMPLATE_EXPORT Storage< vtkm::Vec<vtkm::Int32,2>, StorageTagBasic>;
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extern template class VTKM_CONT_TEMPLATE_EXPORT Storage< vtkm::Vec<vtkm::Float32,2>, StorageTagBasic>;
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extern template class VTKM_CONT_TEMPLATE_EXPORT Storage< vtkm::Vec<vtkm::Float64,2>, StorageTagBasic>;
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extern template class VTKM_CONT_TEMPLATE_EXPORT Storage< vtkm::Vec<vtkm::Int64,3>, StorageTagBasic>;
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extern template class VTKM_CONT_TEMPLATE_EXPORT Storage< vtkm::Vec<vtkm::Int32,3>, StorageTagBasic>;
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extern template class VTKM_CONT_TEMPLATE_EXPORT Storage< vtkm::Vec<vtkm::Float32,3>, StorageTagBasic>;
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extern template class VTKM_CONT_TEMPLATE_EXPORT Storage< vtkm::Vec<vtkm::Float64,3>, StorageTagBasic>;
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extern template class VTKM_CONT_TEMPLATE_EXPORT Storage< vtkm::Vec<char,4>, StorageTagBasic>;
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extern template class VTKM_CONT_TEMPLATE_EXPORT Storage< vtkm::Vec<Int8,4>, StorageTagBasic>;
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extern template class VTKM_CONT_TEMPLATE_EXPORT Storage< vtkm::Vec<UInt8,4>, StorageTagBasic>;
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extern template class VTKM_CONT_TEMPLATE_EXPORT Storage< vtkm::Vec<vtkm::Float32,4>, StorageTagBasic>;
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extern template class VTKM_CONT_TEMPLATE_EXPORT Storage< vtkm::Vec<vtkm::Float64,4>, StorageTagBasic>;
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}
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}
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}
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#endif
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#include <vtkm/cont/StorageBasic.hxx>
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#endif //vtk_m_cont_StorageBasic_h
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