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/*
* Copyright (c) 2004-2005 The Trustees of Indiana University and Indiana
* University Research and Technology
* Corporation. All rights reserved.
* Copyright (c) 2004-2006 The University of Tennessee and The University
* of Tennessee Research Foundation. All rights
* reserved.
* Copyright (c) 2004-2005 High Performance Computing Center Stuttgart,
* University of Stuttgart. All rights reserved.
* Copyright (c) 2004-2005 The Regents of the University of California.
* All rights reserved.
* $COPYRIGHT$
*
* Additional copyrights may follow
*
* $HEADER$
*/
#include "opal_config.h"
#include "opal/win32/ompi_time.h"
#include<time.h>
#define EPOCHFILETIME (116444736000000000LL)
int gettimeofday(struct timeval *tv, struct timezone *tz)
{
FILETIME file_time;
LARGE_INTEGER place_holder;
__int64 time;
/* returns 64 bit value which is the number of 100 nanosecond
intervals since 1601(UTC) */
GetSystemTimeAsFileTime (&file_time);
/* Windows recommends that we should copy the FILETIME returned
into a ULARGE_INTEGER and then perform the arithmetic on that */
place_holder.LowPart = file_time.dwLowDateTime;
place_holder.HighPart = file_time.dwHighDateTime;
time = place_holder.QuadPart;
time -= EPOCHFILETIME;
/* Now we can use arithmetic operations on time which is nothing but
a 64 bit integer holding time in 100 nanosec intervals */
/* convert 100 nanoseconds intervals into microseconds .. divide by 10 */
time /= 10;
tv->tv_sec = (long)(time / 1000000);
tv->tv_usec = (long)(time % 1000000);
return 0;
}
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