tuwien.auto.calimero.buffer.cache
Class CacheSweeper

java.lang.Object
  java.lang.Thread
      tuwien.auto.calimero.buffer.cache.CacheSweeper

All Implemented Interfaces:

java.lang.Runnable

public final class CacheSweeper
extends java.lang.Thread

Used to remove expired entries from a cache.

The cache sweeper is running in its own thread, waking up for work every sweep time interval set by the user. Then Cache.removeExpired() is invoked on the specified cache.

See Also:

Cache

Nested Class Summary

Nested classes/interfaces inherited from class java.lang.Thread

java.lang.Thread.State, java.lang.Thread.UncaughtExceptionHandler

Field Summary

Fields inherited from class java.lang.Thread

MAX_PRIORITY, MIN_PRIORITY, NORM_PRIORITY

Constructor Summary

CacheSweeper(Cache cache, int sweepInterval)
Creates a CacheSweeper for cache with the given sweepInterval.

Method Summary

int	getSweepInterval() Returns the time interval between Cache.removeExpired() calls used by this cache sweeper.
void	run()
void	setSweepInterval(int interval) Sets a new sweep interval.
void	stopSweeper() Stops the sweeper and quits the thread.

Methods inherited from class java.lang.Thread

activeCount, checkAccess, countStackFrames, currentThread, destroy, dumpStack, enumerate, getAllStackTraces, getContextClassLoader, getDefaultUncaughtExceptionHandler, getId, getName, getPriority, getStackTrace, getState, getThreadGroup, getUncaughtExceptionHandler, holdsLock, interrupt, interrupted, isAlive, isDaemon, isInterrupted, join, join, join, resume, setContextClassLoader, setDaemon, setDefaultUncaughtExceptionHandler, setName, setPriority, setUncaughtExceptionHandler, sleep, sleep, start, stop, stop, suspend, toString, yield

Methods inherited from class java.lang.Object

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

Constructor Detail

CacheSweeper

public CacheSweeper(Cache cache,
                    int sweepInterval)

Creates a CacheSweeper for cache with the given sweepInterval.

Parameters:

cache - the cache for which Cache.removeExpired() should be invoked

sweepInterval - lapse of time between sweeping in seconds

Method Detail

getSweepInterval

public int getSweepInterval()

Returns the time interval between Cache.removeExpired() calls used by this cache sweeper.

Returns:

the time in seconds

run

public void run()

Specified by:

run in interface java.lang.Runnable

Overrides:

run in class java.lang.Thread

setSweepInterval

public void setSweepInterval(int interval)

Sets a new sweep interval.

If the cache sweeper is in waiting state for next sweep, the new interval is immediately applied and checked against elapsed time.

Parameters:

interval - new time interval between sweeping in seconds

stopSweeper

public void stopSweeper()

Stops the sweeper and quits the thread.