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/*
* timeval.h 1.0 01/12/19
*
* Defines gettimeofday, timeval, etc. for Win32
*
* By Wu Yongwei
*
*/
#ifndef _TIMEVAL_H
#define _TIMEVAL_H
#ifdef _WIN32
#define WIN32_LEAN_AND_MEAN
#include <windows.h>
#include <time.h>
#ifndef __GNUC__
#define EPOCHFILETIME (116444736000000000i64)
#else
#define EPOCHFILETIME (116444736000000000LL)
#endif /* not __GNUC__ */
#if 0
struct timeval {
long tv_sec; /* seconds */
long tv_usec; /* microseconds */
};
#endif /* 0 */
struct timezone {
int tz_minuteswest; /* minutes W of Greenwich */
int tz_dsttime; /* type of dst correction */
};
__inline int gettimeofday(struct timeval *tv, struct timezone *tz)
{
FILETIME ft;
LARGE_INTEGER li;
__int64 t;
static int tzflag;
if (tv)
{
GetSystemTimeAsFileTime(&ft);
li.LowPart = ft.dwLowDateTime;
li.HighPart = ft.dwHighDateTime;
t = li.QuadPart; /* In 100-nanosecond intervals */
t -= EPOCHFILETIME; /* Offset to the Epoch time */
t /= 10; /* In microseconds */
tv->tv_sec = (long)(t / 1000000);
tv->tv_usec = (long)(t % 1000000);
}
if (tz)
{
if (!tzflag)
{
_tzset();
tzflag++;
}
tz->tz_minuteswest = _timezone / 60;
tz->tz_dsttime = _daylight;
}
return 0;
}
#else /* _WIN32 */
#include <sys/time.h>
#endif /* _WIN32 */
#endif /* _TIMEVAL_H */
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