Package org.yamcs.parameterarchive

Class FillerLock

java.lang.Object

org.yamcs.parameterarchive.FillerLock

public class FillerLock
extends Object

Handle locking parameter archive intervals in order to avoid different fillers filling up the same interval concurrently.

The locking is done per parameter group id

Constructor Summary

Constructors

Constructor	Description
FillerLock()

Method Summary

Modifier and Type	Method	Description
int	lockCount()
String	toString()
boolean	try_lock(long interval, int pgid, Object holder)	try to acquire the filler lock for the given interval and pgid with the given holder.
void	unlock(long interval, int pgid)	unlock the filler lock for the given interval and pgid

Methods inherited from class java.lang.Object

clone, equals, finalize, getClass, hashCode, notify, notifyAll, wait, wait, wait

Constructor Details

FillerLock

public FillerLock()

Method Details

try_lock

public boolean try_lock(long interval,
 int pgid,
 Object holder)

try to acquire the filler lock for the given interval and pgid with the given holder.

return true if the lock could be acquired and false otherwise.

If the holder is the same one that acquired the lock in the first place, then return true;

unlock

public void unlock(long interval,
 int pgid)

unlock the filler lock for the given interval and pgid

lockCount

public int lockCount()

toString

public String toString()

Overrides:

toString in class Object