gettimeofday.c File Reference

#include <wintirpc.h>
#include <time.h>

Include dependency graph for gettimeofday.c:

Go to the source code of this file.

Macros
#define	DELTA_EPOCH_IN_MICROSECS   11644473600000000ULL

Functions
int	gettimeofday (struct timeval *tv, struct timezone *tz)

Macro Definition Documentation

DELTA_EPOCH_IN_MICROSECS

#define DELTA_EPOCH_IN_MICROSECS   11644473600000000ULL

Definition at line 8 of file gettimeofday.c.

Function Documentation

gettimeofday()

int gettimeofday	(	struct timeval *	tv,
		struct timezone *	tz
	)

Definition at line 11 of file gettimeofday.c.

{
  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;
}