1 /****************************************************************************
2 * Copyright 2020,2023 Thomas E. Dickey *
3 * Copyright 2008-2010,2014 Free Software Foundation, Inc. *
4 * *
5 * Permission is hereby granted, free of charge, to any person obtaining a *
6 * copy of this software and associated documentation files (the *
7 * "Software"), to deal in the Software without restriction, including *
8 * without limitation the rights to use, copy, modify, merge, publish, *
9 * distribute, distribute with modifications, sublicense, and/or sell *
10 * copies of the Software, and to permit persons to whom the Software is *
11 * furnished to do so, subject to the following conditions: *
12 * *
13 * The above copyright notice and this permission notice shall be included *
14 * in all copies or substantial portions of the Software. *
15 * *
16 * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS *
17 * OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF *
18 * MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. *
19 * IN NO EVENT SHALL THE ABOVE COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, *
20 * DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR *
21 * OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR *
22 * THE USE OR OTHER DEALINGS IN THE SOFTWARE. *
23 * *
24 * Except as contained in this notice, the name(s) of the above copyright *
25 * holders shall not be used in advertising or otherwise to promote the *
26 * sale, use or other dealings in this Software without prior written *
27 * authorization. *
28 ****************************************************************************/
29
30 #ifdef WINVER
31 # undef WINVER
32 #endif
33 #define WINVER 0x0501
34
35 #include <curses.priv.h>
36
37 #include <windows.h>
38
39 MODULE_ID("$Id: gettimeofday.c,v 1.7 2023/02/25 20:05:36 tom Exp $")
40
41 #if HAVE_GETTIMEOFDAY == 2
42 #define JAN1970 116444736000000000LL /* the value for 01/01/1970 00:00 */
43
NCURSES_EXPORT(int)44 NCURSES_EXPORT(int)
45 gettimeofday(struct timeval *tv, void *tz GCC_UNUSED)
46 {
47 union {
48 FILETIME ft;
49 long long since1601; /* time since 1 Jan 1601 in 100ns units */
50 } data;
51
52 GetSystemTimeAsFileTime(&data.ft);
53 tv->tv_usec = (long) ((data.since1601 / 10LL) % 1000000LL);
54 tv->tv_sec = (long) ((data.since1601 - JAN1970) / 10000000LL);
55 return (0);
56 }
57 #endif // HAVE_GETTIMEOFDAY == 2
58