org.apache.zookeeper.server.watch

Class WatcherCleaner

java.lang.Object

java.lang.Thread

org.apache.zookeeper.server.watch.WatcherCleaner

All Implemented Interfaces:

Runnable

public class WatcherCleaner
extends Thread

Thread used to lazily clean up the closed watcher, it will trigger the clean up when the dead watchers get certain number or some number of seconds has elapsed since last clean up. Cost of running it: - need to go through all the paths even if the watcher may only watching a single path - block in the path BitHashSet when we try to check the dead watcher which won't block other stuff

Nested Class Summary

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

Thread.State, Thread.UncaughtExceptionHandler

Field Summary

Fields inherited from class java.lang.Thread

MAX_PRIORITY, MIN_PRIORITY, NORM_PRIORITY

Constructor Summary

Constructors

Constructor and Description
WatcherCleaner(IDeadWatcherListener listener)
WatcherCleaner(IDeadWatcherListener listener, int watcherCleanThreshold, int watcherCleanIntervalInSeconds, int watcherCleanThreadsNum, int maxInProcessingDeadWatchers)

Method Summary

Modifier and Type	Method and Description
void	addDeadWatcher(int watcherBit)
void	run()
void	shutdown()

Methods inherited from class java.lang.Thread

activeCount, checkAccess, clone, 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

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

Constructor Detail

WatcherCleaner

public WatcherCleaner(IDeadWatcherListener listener)

WatcherCleaner

public WatcherCleaner(IDeadWatcherListener listener,
                      int watcherCleanThreshold,
                      int watcherCleanIntervalInSeconds,
                      int watcherCleanThreadsNum,
                      int maxInProcessingDeadWatchers)

Method Detail

addDeadWatcher

public void addDeadWatcher(int watcherBit)

run

public void run()

Specified by:

run in interface Runnable

Overrides:

run in class Thread

shutdown

public void shutdown()