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#ifndef GETTIME_H
#define GETTIME_H
#include <time.h>
#ifdef WIN32
#include <windows.h>
#define CLOCK_REALTIME 0
#define CLOCK_MONOTONIC 0
static inline 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;
}
static inline int clock_gettime(int X, struct timespec *ts)
{
LARGE_INTEGER t;
FILETIME f;
double microseconds;
static LARGE_INTEGER offset;
static double frequencyToMicroseconds;
static int initialized = 0;
static BOOL usePerformanceCounter = 0;
if (!initialized) {
LARGE_INTEGER performanceFrequency;
initialized = 1;
usePerformanceCounter = QueryPerformanceFrequency(&performanceFrequency);
if (usePerformanceCounter) {
QueryPerformanceCounter(&offset);
frequencyToMicroseconds = (double)performanceFrequency.QuadPart / 1000000.;
} else {
offset = getFILETIMEoffset();
frequencyToMicroseconds = 10.;
}
}
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;
ts->tv_sec = t.QuadPart / 1000000;
ts->tv_nsec = (t.QuadPart % 1000000) * 1000;
return 0;
}
#endif
static inline unsigned gettime(void)
{
struct timespec ts;
clock_gettime(CLOCK_MONOTONIC, &ts);
return ts.tv_sec * 1000 + ts.tv_nsec / 1000000;
}
#endif