Function StoreFBClockDataRealtime

fbclock/shmem.go:272–279

StoreFBClockDataRealtime stores the realtime anchor section, used on hosts whose primary is MONOTONIC_RAW. It's a separate call from StoreFBClockDataV2 so the daemon can publish the primary anchor before the slower REALTIME read.

(fd uintptr, d DataV2)

// whose primary is MONOTONIC_RAW. It's a separate call from StoreFBClockDataV2
// so the daemon can publish the primary anchor before the slower REALTIME read.
func StoreFBClockDataRealtime(fd uintptr, d DataV2) error {
	// fbclock_clockdata_store_data_realtime comes from fbclock.c
	res := C.fbclock_clockdata_store_data_realtime(C.uint(fd), clockDataV2ToC(d))
	if res != 0 {
		return fmt.Errorf("failed to store realtime data: %s", strerror(res))
	}
	return nil
}

// ReadFBClockDataV2 reads the primary anchor section. Used in tests only.
func ReadFBClockDataV2(shmp unsafe.Pointer) (*DataV2, error) {