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/* Copyright (c) 2008 MySQL AB, 2009 Sun Microsystems, Inc.
Use is subject to license terms.
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 St, Fifth Floor, Boston, MA 02110-1335 USA */
/*
rdtsc3 -- multi-platform timer code
pgulutzan@mysql.com, 2005-08-29
modified 2008-11-02
*/
#ifndef MY_RDTSC_H
#define MY_RDTSC_H
/**
Characteristics of a timer.
*/
struct my_timer_unit_info
{
/** Routine used for the timer. */
ulonglong routine;
/** Overhead of the timer. */
ulonglong overhead;
/** Frequency of the timer. */
ulonglong frequency;
/** Resolution of the timer. */
ulonglong resolution;
};
/**
Characteristics of all the supported timers.
@sa my_timer_init().
*/
struct my_timer_info
{
/** Characteristics of the cycle timer. */
struct my_timer_unit_info cycles;
/** Characteristics of the nanosecond timer. */
struct my_timer_unit_info nanoseconds;
/** Characteristics of the microsecond timer. */
struct my_timer_unit_info microseconds;
/** Characteristics of the millisecond timer. */
struct my_timer_unit_info milliseconds;
/** Characteristics of the tick timer. */
struct my_timer_unit_info ticks;
};
typedef struct my_timer_info MY_TIMER_INFO;
C_MODE_START
/**
A cycle timer.
@return the current timer value, in cycles.
*/
ulonglong my_timer_cycles(void);
/**
A namoseconds timer.
@return the current timer value, in nanoseconds.
*/
ulonglong my_timer_nanoseconds(void);
/**
A microseconds timer.
@return the current timer value, in microseconds.
*/
ulonglong my_timer_microseconds(void);
/**
A millisecond timer.
@return the current timer value, in milliseconds.
*/
ulonglong my_timer_milliseconds(void);
/**
A ticks timer.
@return the current timer value, in ticks.
*/
ulonglong my_timer_ticks(void);
/**
Timer initialization function.
@param [out] mti the timer characteristics.
*/
void my_timer_init(MY_TIMER_INFO *mti);
C_MODE_END
#define MY_TIMER_ROUTINE_ASM_X86 1
#define MY_TIMER_ROUTINE_ASM_X86_64 2
#define MY_TIMER_ROUTINE_RDTSCLL 3
#define MY_TIMER_ROUTINE_ASM_X86_WIN 4
#define MY_TIMER_ROUTINE_RDTSC 5
#define MY_TIMER_ROUTINE_ASM_IA64 6
#define MY_TIMER_ROUTINE_ASM_PPC 7
#define MY_TIMER_ROUTINE_SGI_CYCLE 8
#define MY_TIMER_ROUTINE_GETHRTIME 9
#define MY_TIMER_ROUTINE_READ_REAL_TIME 10
#define MY_TIMER_ROUTINE_CLOCK_GETTIME 11
#define MY_TIMER_ROUTINE_NXGETTIME 12
#define MY_TIMER_ROUTINE_GETTIMEOFDAY 13
#define MY_TIMER_ROUTINE_QUERYPERFORMANCECOUNTER 14
#define MY_TIMER_ROUTINE_GETTICKCOUNT 15
#define MY_TIMER_ROUTINE_TIME 16
#define MY_TIMER_ROUTINE_TIMES 17
#define MY_TIMER_ROUTINE_FTIME 18
#define MY_TIMER_ROUTINE_ASM_PPC64 19
#define MY_TIMER_ROUTINE_ASM_SUNPRO_SPARC64 20
#define MY_TIMER_ROUTINE_ASM_SUNPRO_SPARC32 21
#define MY_TIMER_ROUTINE_ASM_SUNPRO_I386 22
#define MY_TIMER_ROUTINE_ASM_GCC_SPARC64 23
#define MY_TIMER_ROUTINE_ASM_GCC_SPARC32 24
#define MY_TIMER_ROUTINE_MACH_ABSOLUTE_TIME 25
#define MY_TIMER_ROUTINE_GETSYSTEMTIMEASFILETIME 26
#define MY_TIMER_ROUTINE_ASM_SUNPRO_X86_64 27
#define MY_TIMER_ROUTINE_ASM_S390 28
#endif
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