aboutsummaryrefslogtreecommitdiff
path: root/ncurses/win32con/gettimeofday.c
blob: e1ef3401de34a156a1a3345118b86fa1d3c50630 (plain) (blame)
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
/****************************************************************************
 * Copyright (c) 2008,2010 Free Software Foundation, Inc.                   *
 *                                                                          *
 * Permission is hereby granted, free of charge, to any person obtaining a  *
 * copy of this software and associated documentation files (the            *
 * "Software"), to deal in the Software without restriction, including      *
 * without limitation the rights to use, copy, modify, merge, publish,      *
 * distribute, distribute with modifications, sublicense, and/or sell       *
 * copies of the Software, and to permit persons to whom the Software is    *
 * furnished to do so, subject to the following conditions:                 *
 *                                                                          *
 * The above copyright notice and this permission notice shall be included  *
 * in all copies or substantial portions of the Software.                   *
 *                                                                          *
 * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS  *
 * OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF               *
 * MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT.   *
 * IN NO EVENT SHALL THE ABOVE COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM,   *
 * DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR    *
 * OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR    *
 * THE USE OR OTHER DEALINGS IN THE SOFTWARE.                               *
 *                                                                          *
 * Except as contained in this notice, the name(s) of the above copyright   *
 * holders shall not be used in advertising or otherwise to promote the     *
 * sale, use or other dealings in this Software without prior written       *
 * authorization.                                                           *
 ****************************************************************************/

#define WINVER 0x0501

#include <curses.priv.h>

#include <windows.h>

MODULE_ID("$Id: gettimeofday.c,v 1.2 2010/01/16 15:18:51 tom Exp $")

#define JAN1970 116444736000000000LL	/* the value for 01/01/1970 00:00 */

int
gettimeofday(struct timeval *tv, void *tz GCC_UNUSED)
{
    union {
	FILETIME ft;
	long long since1601;	/* time since 1 Jan 1601 in 100ns units */
    } data;

    GetSystemTimeAsFileTime(&data.ft);
    tv->tv_usec = (long) ((data.since1601 / 10LL) % 1000000LL);
    tv->tv_sec = (long) ((data.since1601 - JAN1970) / 10000000LL);
    return (0);
}