Intel(R) Threading Building Blocks Doxygen Documentation  version 4.2.3
blocked_range3d.h
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1 /*
2  Copyright (c) 2005-2019 Intel Corporation
3 
4  Licensed under the Apache License, Version 2.0 (the "License");
5  you may not use this file except in compliance with the License.
6  You may obtain a copy of the License at
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8  http://www.apache.org/licenses/LICENSE-2.0
9 
10  Unless required by applicable law or agreed to in writing, software
11  distributed under the License is distributed on an "AS IS" BASIS,
12  WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
13  See the License for the specific language governing permissions and
14  limitations under the License.
15 
16 
17 
18 
19 */
20 
21 #ifndef __TBB_blocked_range3d_H
22 #define __TBB_blocked_range3d_H
23 
24 #include "tbb_stddef.h"
25 #include "blocked_range.h"
26 
27 namespace tbb {
28 
30 
31 template<typename PageValue, typename RowValue=PageValue, typename ColValue=RowValue>
33 public:
38 
39 private:
43 
44 public:
45 
46  blocked_range3d( PageValue page_begin, PageValue page_end,
47  RowValue row_begin, RowValue row_end,
48  ColValue col_begin, ColValue col_end ) :
49  my_pages(page_begin,page_end),
50  my_rows(row_begin,row_end),
51  my_cols(col_begin,col_end)
52  {}
53 
54  blocked_range3d( PageValue page_begin, PageValue page_end, typename page_range_type::size_type page_grainsize,
55  RowValue row_begin, RowValue row_end, typename row_range_type::size_type row_grainsize,
56  ColValue col_begin, ColValue col_end, typename col_range_type::size_type col_grainsize ) :
57  my_pages(page_begin,page_end,page_grainsize),
58  my_rows(row_begin,row_end,row_grainsize),
59  my_cols(col_begin,col_end,col_grainsize)
60  {}
61 
63  bool empty() const {
64  // Range is empty if at least one dimension is empty.
65  return my_pages.empty() || my_rows.empty() || my_cols.empty();
66  }
67 
69  bool is_divisible() const {
71  }
72 
74  my_pages(r.my_pages),
75  my_rows(r.my_rows),
76  my_cols(r.my_cols)
77  {
78  split split_obj;
79  do_split(r, split_obj);
80  }
81 
82 #if __TBB_USE_PROPORTIONAL_SPLIT_IN_BLOCKED_RANGES
83  static const bool is_splittable_in_proportion = true;
85 
87  my_pages(r.my_pages),
88  my_rows(r.my_rows),
89  my_cols(r.my_cols)
90  {
91  do_split(r, proportion);
92  }
93 #endif /* __TBB_USE_PROPORTIONAL_SPLIT_IN_BLOCKED_RANGES */
94 
96  const page_range_type& pages() const {return my_pages;}
97 
99  const row_range_type& rows() const {return my_rows;}
100 
102  const col_range_type& cols() const {return my_cols;}
103 
104 private:
105 
106  template <typename Split>
107  void do_split( blocked_range3d& r, Split& split_obj)
108  {
109  if ( my_pages.size()*double(my_rows.grainsize()) < my_rows.size()*double(my_pages.grainsize()) ) {
110  if ( my_rows.size()*double(my_cols.grainsize()) < my_cols.size()*double(my_rows.grainsize()) ) {
112  } else {
114  }
115  } else {
116  if ( my_pages.size()*double(my_cols.grainsize()) < my_cols.size()*double(my_pages.grainsize()) ) {
118  } else {
120  }
121  }
122  }
123 };
124 
125 } // namespace tbb
126 
127 #endif /* __TBB_blocked_range3d_H */
blocked_range< PageValue > page_range_type
Type for size of an iteration range.
Type enables transmission of splitting proportion from partitioners to range objects.
Definition: tbb_stddef.h:409
blocked_range3d(blocked_range3d &r, split)
const row_range_type & rows() const
The rows of the iteration space.
row_range_type my_rows
page_range_type my_pages
A 3-dimensional range that models the Range concept.
blocked_range3d(blocked_range3d &r, proportional_split &proportion)
const col_range_type & cols() const
The columns of the iteration space.
static ColValue do_split(blocked_range &r, split)
Auxiliary function used by the splitting constructor.
col_range_type my_cols
size_type size() const
Size of the range.
Definition: blocked_range.h:80
void do_split(blocked_range3d &r, Split &split_obj)
blocked_range< ColValue > col_range_type
The graph class.
bool is_divisible() const
True if range is divisible into two pieces.
bool empty() const
True if range is empty.
Definition: blocked_range.h:93
Dummy type that distinguishes splitting constructor from copy constructor.
Definition: tbb_stddef.h:399
bool empty() const
True if range is empty.
bool is_divisible() const
True if range is divisible.
Definition: blocked_range.h:97
const page_range_type & pages() const
The pages of the iteration space.
size_type grainsize() const
The grain size for this range.
Definition: blocked_range.h:86
std::size_t size_type
Type for size of a range.
Definition: blocked_range.h:57
blocked_range< RowValue > row_range_type
blocked_range3d(PageValue page_begin, PageValue page_end, RowValue row_begin, RowValue row_end, ColValue col_begin, ColValue col_end)
static const bool is_splittable_in_proportion
Static field to support proportional split.
blocked_range3d(PageValue page_begin, PageValue page_end, typename page_range_type::size_type page_grainsize, RowValue row_begin, RowValue row_end, typename row_range_type::size_type row_grainsize, ColValue col_begin, ColValue col_end, typename col_range_type::size_type col_grainsize)

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