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6dad23f04a
Merge https://github.com/kakao/mariadb-10.0 that contains Facebook's implementation for defragmentation facebook/mysql-5.6@a2d3a74 facebook/mysql-5.6@def96c8 facebook/mysql-5.6@9c67c5d facebook/mysql-5.6@921a81b facebook/mysql-5.6@aa519bd facebook/mysql-5.6@fea7d13 facebook/mysql-5.6@09b29d3 facebook/mysql-5.6@9284abb facebook/mysql-5.6@dbd623d facebook/mysql-5.6@aed55dc facebook/mysql-5.6@aad5c82 This version does not add new SQL-syntax and new handler API function. Instead optimize table is mapped to defragment table if innodb_defragment=ON, by default the feature is off. Contains changes authored by Sunguck Lee (Kakao).
104 lines
3.7 KiB
C
104 lines
3.7 KiB
C
/*****************************************************************************
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Copyright (c) 2013, 2014, Facebook, Inc. All Rights Reserved.
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Copyright (c) 2014, SkySQL Ab. All Rights Reserved.
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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, Suite 500, Boston, MA 02110-1335 USA
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*****************************************************************************/
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/********************************************************************//**
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@file include/ut0timer.h
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Timer rountines
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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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#ifndef ut0timer_h
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#define ut0timer_h
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#include "univ.i"
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#include "data0type.h"
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#include <my_rdtsc.h>
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/* Current timer stats */
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extern struct my_timer_unit_info ut_timer;
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/**************************************************************//**
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Function pointer to point selected timer function.
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@return timer current value */
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extern ulonglong (*ut_timer_now)(void);
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/**************************************************************//**
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Sets up the data required for use of my_timer_* functions.
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Selects the best timer by high frequency, and tight resolution.
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Points my_timer_now() to the selected timer function.
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Initializes my_timer struct to contain the info for selected timer.*/
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UNIV_INTERN
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void ut_init_timer(void);
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/**************************************************************//**
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Return time passed since time then, automatically adjusted
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for the estimated timer overhead.
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@return time passed since "then" */
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UNIV_INLINE
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ulonglong
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ut_timer_since(
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/*===========*/
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ulonglong then); /*!< in: time where to calculate */
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/**************************************************************//**
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Get time passed since "then", and update then to now
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@return time passed sinche "then" */
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UNIV_INLINE
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ulonglong
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ut_timer_since_and_update(
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/*======================*/
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ulonglong *then); /*!< in: time where to calculate */
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/**************************************************************//**
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Convert native timer units in a ulonglong into seconds in a double
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@return time in a seconds */
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UNIV_INLINE
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double
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ut_timer_to_seconds(
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/*=================*/
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ulonglong when); /*!< in: time where to calculate */
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/**************************************************************//**
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Convert native timer units in a ulonglong into milliseconds in a double
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@return time in milliseconds */
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UNIV_INLINE
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double
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ut_timer_to_milliseconds(
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/*=====================*/
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ulonglong when); /*!< in: time where to calculate */
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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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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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#ifndef UNIV_NONINL
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#include "ut0timer.ic"
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#endif
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#endif
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