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133 lines
4.2 KiB
133 lines
4.2 KiB
5 months ago
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/* Copyright (c) 2008, 2017, Oracle and/or its affiliates. All rights reserved.
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This program is free software; you can redistribute it and/or modify
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it under the terms of the GNU General Public License, version 2.0,
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as published by the Free Software Foundation.
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This program is also distributed with certain software (including
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but not limited to OpenSSL) that is licensed under separate terms,
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as designated in a particular file or component or in included license
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documentation. The authors of MySQL hereby grant you an additional
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permission to link the program and your derivative works with the
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separately licensed software that they have included with MySQL.
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This program is distributed in the hope that it will be useful,
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but WITHOUT ANY WARRANTY; without even the implied warranty of
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MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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GNU General Public License, version 2.0, for more details.
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You should have received a copy of the GNU General Public License
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along with this program; if not, write to the Free Software
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Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA */
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/**
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@file include/my_rdtsc.h
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Multi-platform timer code.
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*/
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#ifndef MY_RDTSC_H
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#define MY_RDTSC_H
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#include "my_inttypes.h"
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#include "my_macros.h"
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/**
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Characteristics of a timer.
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*/
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struct my_timer_unit_info {
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/** Routine used for the timer. */
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ulonglong routine;
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/** Overhead of the timer. */
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ulonglong overhead;
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/** Frequency of the timer. */
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ulonglong frequency;
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/** Resolution of the timer. */
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ulonglong resolution;
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};
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/**
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Characteristics of all the supported timers.
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@sa my_timer_init().
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*/
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struct my_timer_info {
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/** Characteristics of the cycle timer. */
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struct my_timer_unit_info cycles;
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/** Characteristics of the nanosecond timer. */
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struct my_timer_unit_info nanoseconds;
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/** Characteristics of the microsecond timer. */
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struct my_timer_unit_info microseconds;
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/** Characteristics of the millisecond timer. */
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struct my_timer_unit_info milliseconds;
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/** Characteristics of the tick timer. */
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struct my_timer_unit_info ticks;
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};
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typedef struct my_timer_info MY_TIMER_INFO;
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/**
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A cycle timer.
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@return the current timer value, in cycles.
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*/
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ulonglong my_timer_cycles(void);
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/**
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A namoseconds timer.
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@return the current timer value, in nanoseconds.
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*/
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ulonglong my_timer_nanoseconds(void);
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/**
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A microseconds timer.
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@return the current timer value, in microseconds.
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*/
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ulonglong my_timer_microseconds(void);
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/**
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A millisecond timer.
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@return the current timer value, in milliseconds.
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*/
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ulonglong my_timer_milliseconds(void);
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/**
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A ticks timer.
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@return the current timer value, in ticks.
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*/
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ulonglong my_timer_ticks(void);
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/**
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Timer initialization function.
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@param [out] mti the timer characteristics.
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*/
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void my_timer_init(MY_TIMER_INFO *mti);
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#define MY_TIMER_ROUTINE_ASM_X86 1
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#define MY_TIMER_ROUTINE_ASM_X86_64 2
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/* #define MY_TIMER_ROUTINE_RDTSCLL 3 - No longer used */
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/* #define MY_TIMER_ROUTINE_ASM_X86_WIN 4 - No longer used */
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#define MY_TIMER_ROUTINE_RDTSC 5
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#define MY_TIMER_ROUTINE_ASM_IA64 6
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#define MY_TIMER_ROUTINE_ASM_PPC 7
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/* #define MY_TIMER_ROUTINE_SGI_CYCLE 8 - No longer used */
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#define MY_TIMER_ROUTINE_GETHRTIME 9
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/* #define MY_TIMER_ROUTINE_READ_REAL_TIME 10 - No longer used */
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#define MY_TIMER_ROUTINE_CLOCK_GETTIME 11
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#define MY_TIMER_ROUTINE_NXGETTIME 12
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#define MY_TIMER_ROUTINE_GETTIMEOFDAY 13
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#define MY_TIMER_ROUTINE_QUERYPERFORMANCECOUNTER 14
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#define MY_TIMER_ROUTINE_GETTICKCOUNT 15
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/* #define MY_TIMER_ROUTINE_TIME 16 - No longer used */
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#define MY_TIMER_ROUTINE_TIMES 17
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/* #define MY_TIMER_ROUTINE_FTIME 18 - No longer used */
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#define MY_TIMER_ROUTINE_ASM_PPC64 19
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#define MY_TIMER_ROUTINE_ASM_SUNPRO_SPARC64 20
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#define MY_TIMER_ROUTINE_ASM_SUNPRO_SPARC32 21
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#define MY_TIMER_ROUTINE_ASM_SUNPRO_I386 22
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#define MY_TIMER_ROUTINE_ASM_GCC_SPARC64 23
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#define MY_TIMER_ROUTINE_ASM_GCC_SPARC32 24
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#define MY_TIMER_ROUTINE_MACH_ABSOLUTE_TIME 25
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#define MY_TIMER_ROUTINE_GETSYSTEMTIMEASFILETIME 26
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#define MY_TIMER_ROUTINE_ASM_SUNPRO_X86_64 27
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#define MY_TIMER_ROUTINE_ASM_AARCH64 28
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#endif
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