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/**************************************************************************/
/* */
/* OCaml */
/* */
/* Xavier Leroy, projet Cristal, INRIA Rocquencourt */
/* */
/* Copyright 1996 Institut National de Recherche en Informatique et */
/* en Automatique. */
/* */
/* All rights reserved. This file is distributed under the terms of */
/* the GNU Lesser General Public License version 2.1, with the */
/* special exception on linking described in the file LICENSE. */
/* */
/**************************************************************************/
#include <caml/mlvalues.h>
#include <caml/alloc.h>
#include <time.h>
#include "unixsupport.h"
/* Unix epoch as a Windows timestamp in hundreds of ns */
#define epoch_ft 116444736000000000.0;
CAMLprim value unix_gettimeofday(value unit)
{
FILETIME ft;
double tm;
GetSystemTimeAsFileTime(&ft);
#if defined(_MSC_VER) && _MSC_VER < 1300
/* This compiler can't cast uint64_t to double! Fortunately, this doesn't
matter since SYSTEMTIME is only ever 63-bit (maximum value 31-Dec-30827
23:59:59.999, and it requires some skill to set the clock past 2099!)
*/
tm = *(int64_t *)&ft - epoch_ft; /* shift to Epoch-relative time */
#else
tm = *(uint64_t *)&ft - epoch_ft; /* shift to Epoch-relative time */
#endif
return copy_double(tm * 1e-7); /* tm is in 100ns */
}
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