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Sacado_Fad_Exp_DynamicStorage.hpp
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29 
30 #ifndef SACADO_FAD_EXP_DYNAMICSTORAGE_HPP
31 #define SACADO_FAD_EXP_DYNAMICSTORAGE_HPP
32 
33 #include <type_traits>
34 #include <utility>
35 
36 #include "Sacado_ConfigDefs.h"
38 
39 namespace Sacado {
40 
41  namespace Fad {
42  namespace Exp {
43 
45  template <typename T, typename U = T>
47 
48  public:
49 
50  typedef typename std::remove_cv<T>::type value_type;
51  static constexpr bool is_statically_sized = false;
52  static constexpr int static_size = 0;
53  static constexpr bool is_view = false;
54 
56  template <typename TT, typename UU = TT>
57  struct apply {
59  };
60 
62  template <int N>
63  struct apply_N {
65  };
66 
70  val_(), sz_(0), len_(0), dx_(nullptr) {}
71 
74  DynamicStorage(const T & x) :
75  val_(x), sz_(0), len_(0), dx_(nullptr) {}
76 
78 
82  DynamicStorage(const int sz, const T & x,
83  const DerivInit zero_out = InitDerivArray) :
84  val_(x), sz_(sz), len_(sz) {
85  if (zero_out == InitDerivArray)
87  else
89  }
90 
92 
98  DynamicStorage(const int sz, const int i, const value_type & x) :
100  dx_[i]=1.;
101  }
102 
106  val_(x.val_), sz_(x.sz_), len_(x.sz_) {
108  }
109 
113  val_(std::move(x.val_)), sz_(x.sz_), len_(x.len_), dx_(x.dx_) {
114  x.sz_ = 0;
115  x.len_ = 0;
116  x.dx_ = nullptr;
117  }
118 
122  if (len_ != 0)
124  }
125 
129  if (this != &x) {
130  val_ = x.val_;
131  if (sz_ != x.sz_) {
132  sz_ = x.sz_;
133  if (x.sz_ > len_) {
134  if (len_ != 0)
136  len_ = x.sz_;
138  }
139  else
141  }
142  else
144  }
145  return *this;
146  }
147 
151  if (this != &x) {
152  if (len_ != 0)
154  val_ = std::move(x.val_);
155  sz_ = x.sz_; x.sz_ = 0;
156  len_ = x.len_; x.len_ = 0;
157  dx_ = x.dx_; x.dx_ = nullptr;
158  }
159  return *this;
160  }
161 
164  int size() const { return sz_;}
165 
168  int length() const { return len_; }
169 
171 
175  void resize(int sz) {
176  if (sz > len_) {
177  if (len_ != 0)
180  len_ = sz;
181  }
182  sz_ = sz;
183  }
184 
186 
191  void resizeAndZero(int sz) {
192  if (sz > len_) {
193  if (len_ != 0)
196  len_ = sz;
197  }
198  else if (sz > sz_)
200  sz_ = sz;
201  }
202 
204 
209  void expand(int sz) {
210  if (sz > len_) {
211  U* dx_new = ds_array<U>::get_and_fill(sz);
212  ds_array<U>::copy(dx_, dx_new, sz_);
213  if (len_ > 0)
215  dx_ = dx_new;
216  len_ = sz;
217  }
218  else if (sz > sz_)
220  sz_ = sz;
221  }
222 
225  void zero() {
227  }
228 
231  const T& val() const { return val_; }
232 
235  T& val() { return val_; }
236 
239  const U* dx() const { return dx_;}
240 
241 #if defined(SACADO_VIEW_CUDA_HIERARCHICAL_DFAD_STRIDED) && !defined(SACADO_DISABLE_CUDA_IN_KOKKOS) && defined(__CUDA_ARCH__)
242 
245  U dx(int i) const { return sz_ ? dx_[i*blockDim.x] : U(0.); }
246 
249  U& fastAccessDx(int i) { return dx_[i*blockDim.x];}
250 
253  const U& fastAccessDx(int i) const { return dx_[i*blockDim.x];}
254 
255 #else
256 
259  U dx(int i) const { return sz_ ? dx_[i] : U(0.); }
260 
263  U& fastAccessDx(int i) { return dx_[i];}
264 
267  const U& fastAccessDx(int i) const { return dx_[i];}
268 
269 #endif
270 
271  protected:
272 
275 
277  int sz_;
278 
280  int len_;
281 
283  U* dx_;
284 
285  }; // class DynamicStorage
286 
287  } // namespace Exp
288  } // namespace Fad
289 
290 } // namespace Sacado
291 
292 #endif // SACADO_FAD_EXP_DYNAMICSTORAGE_HPP
Turn DynamicStorage into a meta-function class usable with mpl::apply.
static KOKKOS_INLINE_FUNCTION T * get(int sz)
Get memory for new array of length sz.
static KOKKOS_INLINE_FUNCTION void copy(const T *src, T *dest, int sz)
Copy array from src to dest of length sz.
KOKKOS_INLINE_FUNCTION DynamicStorage & operator=(const DynamicStorage &x)
Assignment.
KOKKOS_INLINE_FUNCTION DynamicStorage(DynamicStorage &&x)
Move constructor.
KOKKOS_INLINE_FUNCTION ~DynamicStorage()
Destructor.
KOKKOS_INLINE_FUNCTION int size() const
Returns number of derivative components.
static KOKKOS_INLINE_FUNCTION void destroy_and_release(T *m, int sz)
Destroy array elements and release memory.
KOKKOS_INLINE_FUNCTION DynamicStorage & operator=(DynamicStorage &&x)
Move assignment.
KOKKOS_INLINE_FUNCTION void resize(int sz)
Resize the derivative array to sz.
KOKKOS_INLINE_FUNCTION DynamicStorage(const DynamicStorage &x)
Copy constructor.
#define KOKKOS_INLINE_FUNCTION
#define T
Definition: Sacado_rad.hpp:573
KOKKOS_INLINE_FUNCTION const U & fastAccessDx(int i) const
Returns derivative component i without bounds checking.
KOKKOS_INLINE_FUNCTION DynamicStorage(const int sz, const int i, const value_type &x)
Constructor with size sz, index i, and value x.
static KOKKOS_INLINE_FUNCTION T * get_and_fill(int sz)
Get memory for new array of length sz and fill with zeros.
KOKKOS_INLINE_FUNCTION int length() const
Returns array length.
KOKKOS_INLINE_FUNCTION const T & val() const
Returns value.
KOKKOS_INLINE_FUNCTION T & val()
Returns value.
KOKKOS_INLINE_FUNCTION void resizeAndZero(int sz)
Resize the derivative array to sz.
KOKKOS_INLINE_FUNCTION void zero()
Zero out derivative array.
Derivative array storage class using dynamic memory allocation.
static KOKKOS_INLINE_FUNCTION void zero(T *dest, int sz)
Zero out array dest of length sz.
KOKKOS_INLINE_FUNCTION DynamicStorage(const int sz, const T &x, const DerivInit zero_out=InitDerivArray)
Constructor with size sz.
DerivInit
Enum use to signal whether the derivative array should be initialized in AD object constructors...
KOKKOS_INLINE_FUNCTION DynamicStorage()
Default constructor.
KOKKOS_INLINE_FUNCTION U & fastAccessDx(int i)
Returns derivative component i without bounds checking.
Initialize the derivative array.
KOKKOS_INLINE_FUNCTION DynamicStorage(const T &x)
Constructor with value.
KOKKOS_INLINE_FUNCTION U dx(int i) const
Returns derivative component i with bounds checking.
KOKKOS_INLINE_FUNCTION void expand(int sz)
Expand derivative array to size sz.
KOKKOS_INLINE_FUNCTION const U * dx() const
Returns derivative array.