orc.util
Class TimeSync
java.lang.Object
orc.util.TimeSync
public class TimeSync
- extends java.lang.Object
Constructor Summary |
TimeSync(double device_ticks_per_second,
long device_ticks_wrap,
double rate_error,
double reset_time)
|
Method Summary |
long |
getHostUtime(long device_ticks_wrapping)
For the given device_time, estimate the corresponding host
utime. |
void |
update(long host_utime,
long device_ticks_wrapping)
Every host/device pair should be passed to this function, and must
occur prior to calling _get_host_utime |
Methods inherited from class java.lang.Object |
equals, getClass, hashCode, notify, notifyAll, toString, wait, wait, wait |
last_sync_error
public double last_sync_error
resync_count
public int resync_count
TimeSync
public TimeSync(double device_ticks_per_second,
long device_ticks_wrap,
double rate_error,
double reset_time)
- Parameters:
device_ticks_per_second
- How fast does the counter on the device count, in Hz?device_ticks_wrap
- After how many ticks does the device counter "roll over"? Use 0 if it does not roll over.rate_error
- What is the rate error? (usually a small number like 0.01)reset_time
- Force a resynchronization if the sync error exceeds this many seconds.
update
public void update(long host_utime,
long device_ticks_wrapping)
- Every host/device pair should be passed to this function, and must
occur prior to calling _get_host_utime
getHostUtime
public long getHostUtime(long device_ticks_wrapping)
- For the given device_time, estimate the corresponding host
utime. In the case that device_ticks wraps, the most recent
possible instance of the device_time is used.