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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 Library General Public License, with */
/* the special exception on linking described in file ../../LICENSE. */
/* */
/***********************************************************************/
#include <caml/mlvalues.h>
#include <caml/alloc.h>
#include <time.h>
#include "unixsupport.h"
#ifdef HAS_MKTIME
static double initial_time = 0; /* 0 means uninitialized */
#else
static time_t initial_time = 0; /* 0 means uninitialized */
#endif
static DWORD initial_tickcount;
CAMLprim value unix_gettimeofday(value unit)
{
DWORD tickcount = GetTickCount();
SYSTEMTIME st;
struct tm tm;
if (initial_time == 0 || tickcount < initial_tickcount) {
initial_tickcount = tickcount;
#ifdef HAS_MKTIME
GetLocalTime(&st);
tm.tm_sec = st.wSecond;
tm.tm_min = st.wMinute;
tm.tm_hour = st.wHour;
tm.tm_mday = st.wDay;
tm.tm_mon = st.wMonth - 1;
tm.tm_year = st.wYear - 1900;
tm.tm_wday = 0;
tm.tm_yday = 0;
tm.tm_isdst = -1;
initial_time = ((double) mktime(&tm) + (double) st.wMilliseconds * 1e-3);
#else
initial_time = time(NULL);
#endif
return copy_double((double) initial_time);
} else {
return copy_double((double) initial_time +
(double) (tickcount - initial_tickcount) * 1e-3);
}
}
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