55 lines
1.9 KiB
C
55 lines
1.9 KiB
C
/***********************************************************************/
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/* */
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/* OCaml */
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/* */
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/* Xavier Leroy, projet Cristal, INRIA Rocquencourt */
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/* */
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/* Copyright 1996 Institut National de Recherche en Informatique et */
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/* en Automatique. All rights reserved. This file is distributed */
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/* under the terms of the GNU Library General Public License, with */
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/* the special exception on linking described in file ../../LICENSE. */
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/* */
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/***********************************************************************/
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#include <mlvalues.h>
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#include <alloc.h>
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#include <time.h>
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#include "unixsupport.h"
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#ifdef HAS_MKTIME
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static double initial_time = 0; /* 0 means uninitialized */
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#else
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static time_t initial_time = 0; /* 0 means uninitialized */
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#endif
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static DWORD initial_tickcount;
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CAMLprim value unix_gettimeofday(value unit)
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{
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DWORD tickcount = GetTickCount();
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SYSTEMTIME st;
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struct tm tm;
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if (initial_time == 0 || tickcount < initial_tickcount) {
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initial_tickcount = tickcount;
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#ifdef HAS_MKTIME
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GetLocalTime(&st);
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tm.tm_sec = st.wSecond;
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tm.tm_min = st.wMinute;
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tm.tm_hour = st.wHour;
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tm.tm_mday = st.wDay;
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tm.tm_mon = st.wMonth - 1;
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tm.tm_year = st.wYear - 1900;
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tm.tm_wday = 0;
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tm.tm_yday = 0;
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tm.tm_isdst = -1;
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initial_time = ((double) mktime(&tm) + (double) st.wMilliseconds * 1e-3);
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#else
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initial_time = time(NULL);
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#endif
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return copy_double((double) initial_time);
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} else {
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return copy_double((double) initial_time +
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(double) (tickcount - initial_tickcount) * 1e-3);
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}
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}
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