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libiec61850/hal/time/win32/time.c

62 lines
1.2 KiB
C

/*
* time.c
*
* Copyright 2013-2021 Michael Zillgith
*
* This file is part of Platform Abstraction Layer (libpal)
* for libiec61850, libmms, and lib60870.
*/
#include "hal_time.h"
#include <time.h>
#include <windows.h>
uint64_t
Hal_getTimeInMs()
{
FILETIME ft;
uint64_t now;
static const uint64_t DIFF_TO_UNIXTIME = 11644473600000ULL;
GetSystemTimeAsFileTime(&ft);
now = (LONGLONG)ft.dwLowDateTime + ((LONGLONG)(ft.dwHighDateTime) << 32LL);
return (now / 10000LL) - DIFF_TO_UNIXTIME;
}
nsSinceEpoch
Hal_getTimeInNs()
{
FILETIME ft;
static const uint64_t DIFF_TO_UNIXTIME = 11644473600000000000ULL;
GetSystemTimeAsFileTime(&ft);
nsSinceEpoch nsTime = (LONGLONG)ft.dwLowDateTime + ((LONGLONG)(ft.dwHighDateTime) << 32LL);
nsTime = nsTime * 100LL - DIFF_TO_UNIXTIME;
return nsTime;
}
bool
Hal_setTimeInNs(nsSinceEpoch nsTime)
{
uint64_t t = (nsTime / 100ULL) + 116444736000000000ULL;
FILETIME ft;
ft.dwLowDateTime = (uint32_t)(t & 0xffffffff);
ft.dwHighDateTime = (uint32_t)(t >> 32);
SYSTEMTIME st;
FileTimeToSystemTime(&ft, &st);
return SetSystemTime(&st);
}