65 lines
2.3 KiB
C++
65 lines
2.3 KiB
C++
/*
|
|
Copyright (c) 2016, 2019, Oracle and/or its affiliates. All rights reserved.
|
|
|
|
This program is free software; you can redistribute it and/or modify
|
|
it under the terms of the GNU General Public License, version 2.0,
|
|
as published by the Free Software Foundation.
|
|
|
|
This program is also distributed with certain software (including
|
|
but not limited to OpenSSL) that is licensed under separate terms,
|
|
as designated in a particular file or component or in included license
|
|
documentation. The authors of MySQL hereby grant you an additional
|
|
permission to link the program and your derivative works with the
|
|
separately licensed software that they have included with MySQL.
|
|
|
|
This program 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, version 2.0, for more details.
|
|
|
|
You should have received a copy of the GNU General Public License
|
|
along with this program; if not, write to the Free Software
|
|
Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA
|
|
*/
|
|
|
|
#ifndef NDB_BITMAP_H
|
|
#define NDB_BITMAP_H
|
|
|
|
#include <string>
|
|
|
|
#include "my_bitmap.h"
|
|
|
|
/**
|
|
Initialize bitmap using provided buffer.
|
|
@param bitmap The MY_BITMAP to initialize
|
|
@param buf Buffer to hold the bits for the bitmap
|
|
@param num_bits Max number of bits to store in the bitmap
|
|
|
|
NOTE! Since no memory need to be allocated the 'bitmap_init' funtion
|
|
never fails.
|
|
|
|
NOTE! Size of provided buffer automatically defferred by
|
|
usage of template and thus it's possible to check that
|
|
bitmap is not initialized larger than what the buffer can hold.
|
|
|
|
*/
|
|
|
|
template <size_t sz>
|
|
static inline void ndb_bitmap_init(MY_BITMAP &bitmap, my_bitmap_map (&buf)[sz],
|
|
uint num_bits) {
|
|
assert(num_bits > 0);
|
|
assert(bitmap_buffer_size(num_bits) <= (sz * sizeof(my_bitmap_map)));
|
|
|
|
// Function never fails when called with a "buf" provided
|
|
(void)bitmap_init(&bitmap, buf, num_bits, false);
|
|
}
|
|
|
|
/**
|
|
* @brief Return bitmap as hex formatted string
|
|
* @param bitmap The bitmap to format
|
|
* @return string representation of the bitmap
|
|
*/
|
|
std::string ndb_bitmap_to_hex_string(const MY_BITMAP *bitmap);
|
|
|
|
#endif
|