Adding upstream version 1:10.5.12.upstream/1%10.5.12upstream

Signed-off-by: Daniel Baumann <daniel.baumann@progress-linux.org>

1 files changed, 109 insertions, 0 deletions

diff --git a/storage/innobase/include/ut0byte.ic b/storage/innobase/include/ut0byte.ic
new file mode 100644
index 00000000..a4b5d4a7
--- /dev/null
+++ b/storage/innobase/include/ut0byte.ic
@@ -0,0 +1,109 @@
+/*****************************************************************************
+
+Copyright (c) 1994, 2013, Oracle and/or its affiliates. All Rights Reserved.
+Copyright (c) 2019, 2020, MariaDB Corporation.
+
+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, Fifth Floor, Boston, MA 02110-1335 USA
+
+*****************************************************************************/
+
+/**************************************************************//**
+@file include/ut0byte.ic
+Utilities for byte operations
+
+Created 5/30/1994 Heikki Tuuri
+*******************************************************************/
+
+/*******************************************************//**
+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 */
+{
+	ut_ad(high <= ULINT32_MASK);
+	ut_ad(low <= ULINT32_MASK);
+	return(((ib_uint64_t) high) << 32 | low);
+}
+
+/********************************************************//**
+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 */
+{
+	ut_ad(align_no > 0);
+	ut_ad(ut_is_2pow(align_no));
+
+	return(n & ~((ib_uint64_t) align_no - 1));
+}
+
+/********************************************************//**
+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 */
+{
+	ib_uint64_t	align_1 = (ib_uint64_t) align_no - 1;
+
+	ut_ad(align_no > 0);
+	ut_ad(ut_is_2pow(align_no));
+
+	return((n + align_1) & ~align_1);
+}
+
+/*****************************************************************//**
+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 */
+{
+	ut_ad(n < 8 * sizeof(ulint));
+	return(1 & (a >> n));
+}
+
+/*****************************************************************//**
+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 */
+{
+	ut_ad(n < 8 * sizeof(ulint));
+	if (val) {
+		return(((ulint) 1 << n) | a);
+	} else {
+		return(~((ulint) 1 << n) & a);
+	}
+}