mariadb/storage/innobase/include/ut0byte.h
Jan Lindström 2e814d4702 Merge InnoDB 5.7 from mysql-5.7.9.
Contains also

MDEV-10547: Test multi_update_innodb fails with InnoDB 5.7

	The failure happened because 5.7 has changed the signature of
	the bool handler::primary_key_is_clustered() const
	virtual function ("const" was added). InnoDB was using the old
	signature which caused the function not to be used.

MDEV-10550: Parallel replication lock waits/deadlock handling does not work with InnoDB 5.7

	Fixed mutexing problem on lock_trx_handle_wait. Note that
	rpl_parallel and rpl_optimistic_parallel tests still
	fail.

MDEV-10156 : Group commit tests fail on 10.2 InnoDB (branch bb-10.2-jan)
  Reason: incorrect merge

MDEV-10550: Parallel replication can't sync with master in InnoDB 5.7 (branch bb-10.2-jan)
  Reason: incorrect merge
2016-09-02 13:22:28 +03:00

119 lines
3.7 KiB
C

/*****************************************************************************
Copyright (c) 1994, 2016, 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 as published by the Free Software
Foundation; version 2 of the License.
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 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 Street, Suite 500, Boston, MA 02110-1335 USA
*****************************************************************************/
/******************************************************************//**
@file include/ut0byte.h
Utilities for byte operations
Created 1/20/1994 Heikki Tuuri
***********************************************************************/
#ifndef ut0byte_h
#define ut0byte_h
#include "univ.i"
/*******************************************************//**
Creates a 64-bit integer out of two 32-bit integers.
@return created integer */
UNIV_INLINE
ib_uint64_t
ut_ull_create(
/*==========*/
ulint high, /*!< in: high-order 32 bits */
ulint low) /*!< in: low-order 32 bits */
MY_ATTRIBUTE((const));
/********************************************************//**
Rounds a 64-bit integer downward to a multiple of a power of 2.
@return rounded value */
UNIV_INLINE
ib_uint64_t
ut_uint64_align_down(
/*=================*/
ib_uint64_t n, /*!< in: number to be rounded */
ulint align_no); /*!< in: align by this number
which must be a power of 2 */
/********************************************************//**
Rounds ib_uint64_t upward to a multiple of a power of 2.
@return rounded value */
UNIV_INLINE
ib_uint64_t
ut_uint64_align_up(
/*===============*/
ib_uint64_t n, /*!< in: number to be rounded */
ulint align_no); /*!< in: align by this number
which must be a power of 2 */
/*********************************************************//**
The following function rounds up a pointer to the nearest aligned address.
@return aligned pointer */
UNIV_INLINE
void*
ut_align(
/*=====*/
const void* ptr, /*!< in: pointer */
ulint align_no); /*!< in: align by this number */
/*********************************************************//**
The following function rounds down a pointer to the nearest
aligned address.
@return aligned pointer */
UNIV_INLINE
void*
ut_align_down(
/*==========*/
const void* ptr, /*!< in: pointer */
ulint align_no) /*!< in: align by this number */
MY_ATTRIBUTE((const));
/*********************************************************//**
The following function computes the offset of a pointer from the nearest
aligned address.
@return distance from aligned pointer */
UNIV_INLINE
ulint
ut_align_offset(
/*============*/
const void* ptr, /*!< in: pointer */
ulint align_no) /*!< in: align by this number */
MY_ATTRIBUTE((const));
/*****************************************************************//**
Gets the nth bit of a ulint.
@return TRUE if nth bit is 1; 0th bit is defined to be the least significant */
UNIV_INLINE
ibool
ut_bit_get_nth(
/*===========*/
ulint a, /*!< in: ulint */
ulint n); /*!< in: nth bit requested */
/*****************************************************************//**
Sets the nth bit of a ulint.
@return the ulint with the bit set as requested */
UNIV_INLINE
ulint
ut_bit_set_nth(
/*===========*/
ulint a, /*!< in: ulint */
ulint n, /*!< in: nth bit requested */
ibool val); /*!< in: value for the bit to set */
#ifndef UNIV_NONINL
#include "ut0byte.ic"
#endif
#endif