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56 lines
2 KiB
Text
56 lines
2 KiB
Text
/*****************************************************************************
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Copyright (c) 2013, 2014, Facebook, Inc. All Rights Reserved.
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Copyright (c) 2014, 2018, MariaDB Corporation.
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This program is free software; you can redistribute it and/or modify it under
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the terms of the GNU General Public License as published by the Free Software
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Foundation; version 2 of the License.
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This program is distributed in the hope that it will be useful, but WITHOUT
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ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or FITNESS
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FOR A PARTICULAR PURPOSE. See the GNU General Public License for more details.
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You should have received a copy of the GNU General Public License along with
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this program; if not, write to the Free Software Foundation, Inc.,
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51 Franklin Street, Fifth Floor, Boston, MA 02110-1335 USA
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*****************************************************************************/
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/********************************************************************//**
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@file include/ut0timer.ic
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Timer routines
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Created 30/07/2014 Jan Lindström jan.lindstrom@skysql.com
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modified from https://github.com/facebook/mysql-5.6/commit/c75a413edeb96eb99bf11d7269bdfea06f96d6b6
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*************************************************************************/
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/**************************************************************//**
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Convert native timer units in a ulonglong into microseconds in a double
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@return time in microseconds */
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UNIV_INLINE
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double
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ut_timer_to_microseconds(
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/*=====================*/
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ulonglong when) /*!< in: time where to calculate */
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{
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double ret = (double)(when);
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ret *= 1000000.0;
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ret /= (double)(ut_timer.frequency);
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return ret;
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}
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/**************************************************************//**
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Convert microseconds in a double to native timer units in a ulonglong
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@return time in microseconds */
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UNIV_INLINE
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ulonglong
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ut_microseconds_to_timer(
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/*=====================*/
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ulonglong when) /*!< in: time where to calculate */
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{
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double ret = (double)when;
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ret *= (double)(ut_timer.frequency);
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ret /= 1000000.0;
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return (ulonglong)ret;
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}
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