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/* ------------------------------------------------------------------------- */
#if defined(__GNUC__) && (defined(__i386__) || defined(__x86_64__))
#define TIMER_NAME "RDTSC instruction"
#define TIMER_VARS \
u32 start_lo, start_hi; \
u32 ticks_lo, ticks_hi
#define TIMER_START() \
__asm__ volatile \
("\n rdtsc" \
: "=a" (start_lo), "=d" (start_hi))
#define TIMER_STOP() \
__asm__ volatile \
("\n rdtsc" \
"\n subl %2, %%eax" \
"\n sbbl %3, %%edx" \
: "=&a" (ticks_lo), "=&d" (ticks_hi) \
: "g" (start_lo), "g" (start_hi))
#define TICKS() ((double)ticks_lo + 4294967296.0 * (double)ticks_hi)
#define USEC(ticks) (ticks / cpu_speed)
#define TRIALS 19
#define TARGET_TIME 250.0
#define SHORT_TARGET_TIME 250.0
/* ------------------------------------------------------------------------- */
#elif defined(_MSC_VER) && defined(_M_IX86)
#define TIMER_NAME "RDTSC instruction"
#define TIMER_VARS \
u32 start_lo, start_hi; \
u32 ticks_lo, ticks_hi
#define TIMER_START() \
__asm { \
__asm rdtsc \
__asm mov start_lo, eax \
__asm mov start_hi, edx \
}
#define TIMER_STOP() \
__asm { \
__asm rdtsc \
__asm sub eax, start_lo \
__asm sbb edx, start_hi \
__asm mov ticks_lo, eax \
__asm mov ticks_hi, edx \
}
#define TICKS() ((double)ticks_lo + 4294967296.0 * (double)ticks_hi)
#define USEC(ticks) (ticks / cpu_speed)
#define TRIALS 19
#define TARGET_TIME 250.0
#define SHORT_TARGET_TIME 250.0
/* ------------------------------------------------------------------------- */
#elif defined(__GNUC__) && defined(__hppa__)
#define TIMER_NAME "MFCTL instruction"
#define TIMER_VARS \
unsigned long start_ul; \
unsigned long ticks_ul
#define TIMER_START() \
__asm__ volatile \
("\n mfctl 16, %0" \
: "=r" (start_ul))
#define TIMER_STOP() \
do { \
__asm__ volatile \
("\n mfctl 16, %0" \
: "=r" (ticks_ul)); \
\
ticks_ul -= start_ul; \
} while (0)
#define TICKS() ((double)ticks_ul)
#define USEC(ticks) (ticks / cpu_speed)
#define TRIALS 19
#define TARGET_TIME 250.0
#define SHORT_TARGET_TIME 250.0
/* ------------------------------------------------------------------------- */
#elif defined(__hppa)
#define TIMER_NAME "MFCTL instruction"
#include <machine/inline.h>
#define TIMER_VARS \
unsigned long start_ul; \
unsigned long ticks_ul
#define TIMER_START() \
do { \
register unsigned long r; \
_MFCTL(16, r); \
start_ul = r; \
} while (0)
#define TIMER_STOP() \
do { \
register unsigned long r; \
_MFCTL(16, r); \
ticks_ul = r - start_ul; \
} while (0)
#define TICKS() ((double)ticks_ul)
#define USEC(ticks) (ticks / cpu_speed)
#define TRIALS 19
#define TARGET_TIME 250.0
#define SHORT_TARGET_TIME 250.0
/* ------------------------------------------------------------------------- */
#elif defined(__GNUC__) && defined(__sparc__)
#define TIMER_NAME "tick register"
#define TIMER_VARS \
unsigned long start_ul; \
unsigned long ticks_ul
#define TIMER_START() \
__asm__ volatile \
("\n rd %%tick, %0" \
: "=r" (start_ul))
#define TIMER_STOP() \
do { \
__asm__ volatile \
("\n rd %%tick, %0" \
: "=r" (ticks_ul)); \
\
ticks_ul -= start_ul; \
} while (0)
#define TICKS() ((double)ticks_ul)
#define USEC(ticks) (ticks / cpu_speed)
#define TRIALS 19
#define TARGET_TIME 250.0
#define SHORT_TARGET_TIME 250.0
/* ------------------------------------------------------------------------- */
#elif defined(__sparc)
#define TIMER_NAME "gethrtime()"
#include <sys/time.h>
#define TIMER_VARS \
hrtime_t start_ul; \
hrtime_t ticks_ul
#define TIMER_START() \
start_ul = gethrtime()
#define TIMER_STOP() \
ticks_ul = gethrtime() - start_ul
#define TICKS() ((double)ticks_ul)
#define USEC(ticks) (ticks / 1000.0)
#define TRIALS 19
#define TARGET_TIME 250.0
#define SHORT_TARGET_TIME 250.0
/* ------------------------------------------------------------------------- */
#elif defined(__GNUC__) && defined(__alpha__)
#define TIMER_NAME "RPCC instruction"
#define TIMER_VARS \
unsigned int start_ul; \
unsigned int ticks_ul
#define TIMER_START() \
__asm__ volatile \
("\n rpcc %0" \
: "=r" (start_ul))
#define TIMER_STOP() \
do { \
__asm__ volatile \
("\n rpcc %0" \
: "=r" (ticks_ul)); \
\
ticks_ul -= start_ul; \
} while (0)
#define TICKS() ((double)ticks_ul)
#define USEC(ticks) (ticks / cpu_speed)
#define TRIALS 19
#define TARGET_TIME 250.0
#define SHORT_TARGET_TIME 250.0
/* ------------------------------------------------------------------------- */
#elif defined(__alpha)
#define TIMER_NAME "RPCC instruction"
#include <c_asm.h>
#define TIMER_VARS \
unsigned int start_ul; \
unsigned int ticks_ul
#define TIMER_START() \
start_ul = asm("rpcc %v0")
#define TIMER_STOP() \
ticks_ul = asm("rpcc %v0") - start_ul
#define TICKS() ((double)ticks_ul)
#define USEC(ticks) (ticks / cpu_speed)
#define TRIALS 19
#define TARGET_TIME 250.0
#define SHORT_TARGET_TIME 250.0
/* ------------------------------------------------------------------------- */
#elif defined(__GNUC__) && (defined(__powerpc__) || defined(__ppc__))
/*
* WARNING: The value PPC_CLOCKS_PER_TICK is machine-dependent. Under
* Mac OS X, the correct value can be found can be found with the command
*
* $ sysctl hw.cpufrequency hw.tbfrequency \
| awk '/cpu/ { cpu = $2; } /tb/ { tb = $2; } END { print cpu / tb; }'
*/
#define PPC_CLOCKS_PER_TICK 16
#define TIMER_NAME "MFTB instruction (assuming " \
QUOTE(PPC_CLOCKS_PER_TICK) " clocks per tick)"
#define TIMER_VARS \
unsigned int start_ul; \
unsigned int ticks_ul
#define TIMER_START() \
__asm__ volatile \
("\n mftb %0" \
: "=r" (start_ul))
#define TIMER_STOP() \
do { \
__asm__ volatile \
("\n mftb %0" \
: "=r" (ticks_ul)); \
\
ticks_ul -= start_ul; \
} while (0)
#define TICKS() ((double)ticks_ul)
#define USEC(ticks) (PPC_CLOCKS_PER_TICK * ticks / cpu_speed)
#define TRIALS 19
#define TARGET_TIME 250.0
#define SHORT_TARGET_TIME 250.0
/* ------------------------------------------------------------------------- */
#else
#define TIMER_NAME "clock() function"
#include <time.h>
#define TIMER_VARS \
clock_t start_ul; \
clock_t ticks_ul
#define TIMER_START() \
start_ul = clock()
#define TIMER_STOP() \
ticks_ul = clock() - start_ul
#define TICKS() ((double)ticks_ul)
#define USEC(ticks) (1000000.0 * (double)ticks / (double)CLOCKS_PER_SEC)
#define TRIALS 1
#define TARGET_TIME 3000000.0
#define SHORT_TARGET_TIME 100000.0
/* ------------------------------------------------------------------------- */
#endif
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