/* -*- Mode: C; c-basic-offset:4 ; indent-tabs-mode:nil ; -*- */
/*
* (C) 2001 by Argonne National Laboratory.
* See COPYRIGHT in top-level directory.
*/
#include "mpl.h"
MPL_SUPPRESS_OSX_HAS_NO_SYMBOLS_WARNING;
#if MPL_TIMER_KIND == MPL_TIMER_KIND__QUERYPERFORMANCECOUNTER
static double seconds_per_tick = 0.0; /* High performance counter frequency */
int MPL_wtime_init(void)
{
LARGE_INTEGER n;
QueryPerformanceFrequency(&n);
seconds_per_tick = 1.0 / (double) n.QuadPart;
return 0;
}
double MPL_wtick(void)
{
return seconds_per_tick;
}
void MPL_wtime_todouble(MPL_time_t * t, double *val)
{
*val = (double) t->QuadPart * seconds_per_tick;
}
void MPL_wtime_diff(MPL_time_t * t1, MPL_time_t * t2, double *diff)
{
LARGE_INTEGER n;
n.QuadPart = t2->QuadPart - t1->QuadPart;
*diff = (double) n.QuadPart * seconds_per_tick;
}
void MPL_wtime_acc(MPL_time_t * t1, MPL_time_t * t2, MPL_time_t * t3)
{
t3->QuadPart += ((t2->QuadPart) - (t1->QuadPart));
}
#endif