You can not select more than 25 topics
Topics must start with a letter or number, can include dashes ('-') and can be up to 35 characters long.
97 lines
3.3 KiB
97 lines
3.3 KiB
/*
|
|
Copyright 2005-2014 Intel Corporation. All Rights Reserved.
|
|
|
|
This file is part of Threading Building Blocks.
|
|
|
|
Threading Building Blocks is free software; you can redistribute it
|
|
and/or modify it under the terms of the GNU General Public License
|
|
version 2 as published by the Free Software Foundation.
|
|
|
|
Threading Building Blocks is distributed in the hope that it will be
|
|
useful, but WITHOUT ANY WARRANTY; without even the implied warranty
|
|
of MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
|
|
GNU General Public License for more details.
|
|
|
|
You should have received a copy of the GNU General Public License
|
|
along with Threading Building Blocks; if not, write to the Free Software
|
|
Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA
|
|
|
|
As a special exception, you may use this file as part of a free software
|
|
library without restriction. Specifically, if other files instantiate
|
|
templates or use macros or inline functions from this file, or you compile
|
|
this file and link it with other files to produce an executable, this
|
|
file does not by itself cause the resulting executable to be covered by
|
|
the GNU General Public License. This exception does not however
|
|
invalidate any other reasons why the executable file might be covered by
|
|
the GNU General Public License.
|
|
*/
|
|
|
|
#ifndef __TBB_blocked_range2d_H
|
|
#define __TBB_blocked_range2d_H
|
|
|
|
#include "tbb_stddef.h"
|
|
#include "blocked_range.h"
|
|
|
|
namespace tbb {
|
|
|
|
//! A 2-dimensional range that models the Range concept.
|
|
/** @ingroup algorithms */
|
|
template<typename RowValue, typename ColValue=RowValue>
|
|
class blocked_range2d {
|
|
public:
|
|
//! Type for size of an iteration range
|
|
typedef blocked_range<RowValue> row_range_type;
|
|
typedef blocked_range<ColValue> col_range_type;
|
|
|
|
private:
|
|
row_range_type my_rows;
|
|
col_range_type my_cols;
|
|
|
|
public:
|
|
|
|
blocked_range2d( 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_rows(row_begin,row_end,row_grainsize),
|
|
my_cols(col_begin,col_end,col_grainsize)
|
|
{
|
|
}
|
|
|
|
blocked_range2d( RowValue row_begin, RowValue row_end,
|
|
ColValue col_begin, ColValue col_end ) :
|
|
my_rows(row_begin,row_end),
|
|
my_cols(col_begin,col_end)
|
|
{
|
|
}
|
|
|
|
//! True if range is empty
|
|
bool empty() const {
|
|
// Yes, it is a logical OR here, not AND.
|
|
return my_rows.empty() || my_cols.empty();
|
|
}
|
|
|
|
//! True if range is divisible into two pieces.
|
|
bool is_divisible() const {
|
|
return my_rows.is_divisible() || my_cols.is_divisible();
|
|
}
|
|
|
|
blocked_range2d( blocked_range2d& r, split ) :
|
|
my_rows(r.my_rows),
|
|
my_cols(r.my_cols)
|
|
{
|
|
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);
|
|
} else {
|
|
my_rows.my_begin = row_range_type::do_split(r.my_rows);
|
|
}
|
|
}
|
|
|
|
//! 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_range2d_H */
|