summaryrefslogtreecommitdiff
path: root/thirdparty/libwebsockets/win32helpers/gettimeofday.c
blob: 35dd73531d57a46b25512e9170ae6df90655d459 (plain)
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
#include <time.h>
#include <windows.h> //I've omitted context line

#include "gettimeofday.h"

int gettimeofday(struct timeval *tv, struct timezone *tz)
{
	FILETIME ft;
	unsigned __int64 tmpres = 0;
	static int tzflag;

	if (NULL != tv) {
		GetSystemTimeAsFileTime(&ft);

		tmpres |= ft.dwHighDateTime;
		tmpres <<= 32;
		tmpres |= ft.dwLowDateTime;

		/*converting file time to unix epoch*/
		tmpres /= 10;  /*convert into microseconds*/
		tmpres -= DELTA_EPOCH_IN_MICROSECS;
		tv->tv_sec = (long)(tmpres / 1000000UL);
		tv->tv_usec = (long)(tmpres % 1000000UL);
	}
 
	if (NULL != tz) {
		if (!tzflag) {
			_tzset();
			tzflag++;
		}
		tz->tz_minuteswest = _timezone / 60;
		tz->tz_dsttime = _daylight;
	}

	return 0;
}