org.w3c.www.protocol.http.cache
Class SimpleCacheSweeper

java.lang.Object
  java.lang.Thread
      org.w3c.www.protocol.http.cache.CacheSweeper
          org.w3c.www.protocol.http.cache.SimpleCacheSweeper

All Implemented Interfaces:

java.lang.Runnable

public class SimpleCacheSweeper
extends CacheSweeper

Nested Class Summary

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

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

Field Summary

protected int

state

Fields inherited from class org.w3c.www.protocol.http.cache.CacheSweeper

STATE_CLEAN_GENERATIONS, STATE_CLEAN_STORED, STATE_FORCE_CLEAN_GENERATIONS, STATE_FORCE_CLEAN_STORED

Fields inherited from class java.lang.Thread

MAX_PRIORITY, MIN_PRIORITY, NORM_PRIORITY

Constructor Summary

SimpleCacheSweeper()

Method Summary

protected long	collectCached(CacheGeneration generation, long bytes, boolean check) collect the existing resources
protected long	collectCached(long bytes, boolean check) collect the existing resources
protected void	collectStored() collect the still stored resources in the whole cache It will NOT block the cache during the process
protected void	collectStored(CacheGeneration generation) collect the still stored resources
void	garbageCollect() Run the garbage collector.
void	initialize(CacheFilter filter) initialize the sweeper
void	run()
protected void	setState(int state) change the state of the Sweeper
void	signal() Used to trigger a signal
void	waitSignal()

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

Field Detail

state

protected int state

Constructor Detail

SimpleCacheSweeper

public SimpleCacheSweeper()

Method Detail

signal

public void signal()

Used to trigger a signal

Specified by:

signal in class CacheSweeper

waitSignal

public void waitSignal()

run

public void run()

Specified by:

run in interface java.lang.Runnable

Overrides:

run in class java.lang.Thread

garbageCollect

public void garbageCollect()

Run the garbage collector.

setState

protected void setState(int state)

change the state of the Sweeper

Specified by:

setState in class CacheSweeper

Parameters:

an - integer, setting the new cache state

collectStored

protected void collectStored(CacheGeneration generation)

collect the still stored resources

Specified by:

collectStored in class CacheSweeper

Parameters:

generation, - the CacheGeneration to clean

collectStored

protected void collectStored()

collect the still stored resources in the whole cache It will NOT block the cache during the process

Specified by:

collectStored in class CacheSweeper

collectCached

protected long collectCached(CacheGeneration generation,
                             long bytes,
                             boolean check)

collect the existing resources

Specified by:

collectCached in class CacheSweeper

Parameters:

generation, - the CacheGeneration to clean

bytes, - a long. The number of bytes to collect

check, - a boolean. If true, then only the stale resources will be removed

Returns:

a long, the number of collected bytes

collectCached

protected long collectCached(long bytes,
                             boolean check)

collect the existing resources

Specified by:

collectCached in class CacheSweeper

Parameters:

bytes, - a long. The number of bytes to collect

check, - a boolean. If true, then only the stale resources will be removed

Returns:

a long, the number of collected bytes

initialize

public void initialize(CacheFilter filter)

initialize the sweeper

Specified by:

initialize in class CacheSweeper