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#if defined(WIN32) || defined(_WIN32)
#include "wingettimeofday.h"
#include <sys/timeb.h>
#ifndef __GNUC__
#define EPOCHFILETIME (116444736000000000i64)
#else
#define EPOCHFILETIME (116444736000000000LL)
#endif
int __gettimeofday(struct timeval* tv, void * tz)
{
struct _timeb currSysTime;
_ftime(&currSysTime);
tv->tv_sec = currSysTime.time;
tv->tv_usec = currSysTime.millitm * 1000;
return 0;
}
LARGE_INTEGER getFILETIMEoffset()
{
SYSTEMTIME s;
FILETIME f;
LARGE_INTEGER t;
s.wYear = 1970;
s.wMonth = 1;
s.wDay = 1;
s.wHour = 0;
s.wMinute = 0;
s.wSecond = 0;
s.wMilliseconds = 0;
SystemTimeToFileTime(&s, &f);
t.QuadPart = f.dwHighDateTime;
t.QuadPart <<= 32;
t.QuadPart |= f.dwLowDateTime;
return (t);
}
int gettimeofday(struct timeval *tv, void * tz)
{
LARGE_INTEGER t;
FILETIME f;
double microseconds;
static LARGE_INTEGER offset;
static LARGE_INTEGER base;
static double frequencyToMicroseconds;
static int initialized = 0;
static BOOL usePerformanceCounter = 0;
if(!initialized)
{
LARGE_INTEGER performanceFrequency;
initialized = 1;
usePerformanceCounter = QueryPerformanceFrequency(&performanceFrequency);
if(usePerformanceCounter)
{
LARGE_INTEGER tmpoffs;
QueryPerformanceCounter(&offset);
frequencyToMicroseconds = (double)performanceFrequency.QuadPart / 1000000.;
tmpoffs = getFILETIMEoffset();
GetSystemTimeAsFileTime(&f);
base.QuadPart = f.dwHighDateTime;
base.QuadPart <<= 32;
base.QuadPart |= f.dwLowDateTime;
base.QuadPart -= tmpoffs.QuadPart;
microseconds = (double)base.QuadPart / 10;
base.QuadPart = microseconds;
tv->tv_sec = base.QuadPart / 1000000;
tv->tv_usec = base.QuadPart % 1000000;
}
else
{
offset = getFILETIMEoffset();
frequencyToMicroseconds = 10.;
base.QuadPart=0i64;
}
}
if(usePerformanceCounter)
QueryPerformanceCounter(&t);
else
{
GetSystemTimeAsFileTime(&f);
t.QuadPart = f.dwHighDateTime;
t.QuadPart <<= 32;
t.QuadPart |= f.dwLowDateTime;
}
t.QuadPart -= offset.QuadPart;
microseconds = (double)t.QuadPart / frequencyToMicroseconds;
t.QuadPart = microseconds + base.QuadPart;
tv->tv_sec = t.QuadPart / 1000000;
tv->tv_usec = t.QuadPart % 1000000;
return (0);
}
#endif
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