/usr/include/tbb/blocked_range3d.h is in libtbb-dev 2017~U7-8.
This file is owned by root:root, with mode 0o644.
The actual contents of the file can be viewed below.
1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 32 33 34 35 36 37 38 39 40 41 42 43 44 45 46 47 48 49 50 51 52 53 54 55 56 57 58 59 60 61 62 63 64 65 66 67 68 69 70 71 72 73 74 75 76 77 78 79 80 81 82 83 84 85 86 87 88 89 90 91 92 93 94 95 96 97 98 99 100 101 102 103 104 105 106 107 108 109 110 111 112 113 114 115 116 117 118 119 120 121 122 123 124 125 126 127 128 | /*
Copyright (c) 2005-2017 Intel Corporation
Licensed under the Apache License, Version 2.0 (the "License");
you may not use this file except in compliance with the License.
You may obtain a copy of the License at
http://www.apache.org/licenses/LICENSE-2.0
Unless required by applicable law or agreed to in writing, software
distributed under the License is distributed on an "AS IS" BASIS,
WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
See the License for the specific language governing permissions and
limitations under the License.
*/
#ifndef __TBB_blocked_range3d_H
#define __TBB_blocked_range3d_H
#include "tbb_stddef.h"
#include "blocked_range.h"
namespace tbb {
//! A 3-dimensional range that models the Range concept.
/** @ingroup algorithms */
template<typename PageValue, typename RowValue=PageValue, typename ColValue=RowValue>
class blocked_range3d {
public:
//! Type for size of an iteration range
typedef blocked_range<PageValue> page_range_type;
typedef blocked_range<RowValue> row_range_type;
typedef blocked_range<ColValue> col_range_type;
private:
page_range_type my_pages;
row_range_type my_rows;
col_range_type my_cols;
public:
blocked_range3d( PageValue page_begin, PageValue page_end,
RowValue row_begin, RowValue row_end,
ColValue col_begin, ColValue col_end ) :
my_pages(page_begin,page_end),
my_rows(row_begin,row_end),
my_cols(col_begin,col_end)
{
}
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 ) :
my_pages(page_begin,page_end,page_grainsize),
my_rows(row_begin,row_end,row_grainsize),
my_cols(col_begin,col_end,col_grainsize)
{
}
//! True if range is empty
bool empty() const {
// Yes, it is a logical OR here, not AND.
return my_pages.empty() || my_rows.empty() || my_cols.empty();
}
//! True if range is divisible into two pieces.
bool is_divisible() const {
return my_pages.is_divisible() || my_rows.is_divisible() || my_cols.is_divisible();
}
blocked_range3d( blocked_range3d& r, split ) :
my_pages(r.my_pages),
my_rows(r.my_rows),
my_cols(r.my_cols)
{
split split_obj;
do_split(r, split_obj);
}
#if __TBB_USE_PROPORTIONAL_SPLIT_IN_BLOCKED_RANGES
//! Static field to support proportional split
static const bool is_splittable_in_proportion = true;
blocked_range3d( blocked_range3d& r, proportional_split& proportion ) :
my_pages(r.my_pages),
my_rows(r.my_rows),
my_cols(r.my_cols)
{
do_split(r, proportion);
}
#endif /* __TBB_USE_PROPORTIONAL_SPLIT_IN_BLOCKED_RANGES */
template <typename Split>
void do_split( blocked_range3d& r, Split& split_obj)
{
if ( my_pages.size()*double(my_rows.grainsize()) < my_rows.size()*double(my_pages.grainsize()) ) {
if ( my_rows.size()*double(my_cols.grainsize()) < my_cols.size()*double(my_rows.grainsize()) ) {
my_cols.my_begin = col_range_type::do_split(r.my_cols, split_obj);
} else {
my_rows.my_begin = row_range_type::do_split(r.my_rows, split_obj);
}
} else {
if ( my_pages.size()*double(my_cols.grainsize()) < my_cols.size()*double(my_pages.grainsize()) ) {
my_cols.my_begin = col_range_type::do_split(r.my_cols, split_obj);
} else {
my_pages.my_begin = page_range_type::do_split(r.my_pages, split_obj);
}
}
}
//! The pages of the iteration space
const page_range_type& pages() const {return my_pages;}
//! The rows of the iteration space
const row_range_type& rows() const {return my_rows;}
//! The columns of the iteration space
const col_range_type& cols() const {return my_cols;}
};
} // namespace tbb
#endif /* __TBB_blocked_range3d_H */
|