- HAL: implemented Hal_setTimeInNs for windows

hal/inc/hal_time.h

@@ -71,6 +71,14 @@ Hal_getTimeInMs(void);
 PAL_API nsSinceEpoch
 Hal_getTimeInNs(void);
 
+/**
+* Set the system time from ns time
+*
+* The time value returned as 64-bit unsigned integer should represent the nanoseconds
+* since the UNIX epoch (1970/01/01 00:00 UTC).
+*
+* \return true on success, otherwise false
+*/
 PAL_API bool
 Hal_setTimeInNs(nsSinceEpoch nsTime);
 

hal/time/win32/time.c

@@ -57,3 +57,21 @@ Hal_getTimeInNs()
 
 	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);
+}
+