com.sleepycat.je.evictor
Class PrivateEvictor

java.lang.Object
  com.sleepycat.je.utilint.DaemonThread
      com.sleepycat.je.evictor.Evictor
          com.sleepycat.je.evictor.PrivateEvictor

All Implemented Interfaces:

DaemonRunner, ExceptionListenerUser, Runnable

public class PrivateEvictor
extends Evictor

The standard Evictor that operates on the INList for a single environment. A single iterator over the INList is used to implement getNextIN.

Nested Class Summary

Nested classes/interfaces inherited from class com.sleepycat.je.evictor.Evictor

Evictor.EvictionSource, Evictor.EvictProfile

Field Summary

Fields inherited from class com.sleepycat.je.evictor.Evictor

evictProfile, sharedCacheEnvs

Fields inherited from class com.sleepycat.je.utilint.DaemonThread

logger, name, nWakeupRequests, stifleExceptionChatter

Constructor Summary

PrivateEvictor(EnvironmentImpl envImpl, long wakeupInterval, String name)

Method Summary

void	addEnvironment(EnvironmentImpl unused) Only supported by SharedEvictor.
boolean	checkEnv(EnvironmentImpl env) Only supported by SharedEvictor.
void	clearEnv() Standard daemon method to set envImpl to null.
(package private) StatGroup	getINListStats(StatsConfig config) Return stats for the single INList covered by this evictor.
(package private) int	getMaxINsPerBatch() Returns the simple INList size.
(package private) IN	getNextIN() Returns the next IN, wrapping if necessary.
(package private) Iterator<IN>	getScanIterator()
StatGroup	loadStats(StatsConfig config) Load stats.
void	noteINListChange(int nINs) Do nothing.
void	onWakeup() Called whenever the daemon thread wakes up from a sleep.
void	removeEnvironment(EnvironmentImpl unused) Only supported by SharedEvictor.
(package private) void	setScanIterator(Iterator<IN> iter)
(package private) long	startBatch() Initializes the iterator, and performs special eviction once per batch.

Methods inherited from class com.sleepycat.je.evictor.Evictor

alert, doCriticalEviction, doEvict, evictBatch, evictIN, incBINEvictStats, incBINFetchStats, incINEvictStats, incINFetchStats, incLNFetchStats, isCacheFull, nDeadlockRetries, normalizeLevel, setPreEvictINHook, setRunnableHook, wasCacheEverFull

Methods inherited from class com.sleepycat.je.utilint.DaemonThread

checkErrorListener, createLogger, getExceptionListener, getNWakeupRequests, getThread, isPaused, isRunning, isShutdownRequested, requestShutdown, run, runOrPause, setExceptionListener, shutdown, toString, wakeup

Methods inherited from class java.lang.Object

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

Constructor Detail

PrivateEvictor

public PrivateEvictor(EnvironmentImpl envImpl,
                      long wakeupInterval,
                      String name)
               throws DatabaseException

Throws:

DatabaseException

Method Detail

loadStats

public StatGroup loadStats(StatsConfig config)

Description copied from class: Evictor

Load stats.

Overrides:

loadStats in class Evictor

onWakeup

public void onWakeup()
              throws DatabaseException

Description copied from class: Evictor

Called whenever the daemon thread wakes up from a sleep.

Overrides:

onWakeup in class Evictor

Throws:

DatabaseException

clearEnv

public void clearEnv()

Standard daemon method to set envImpl to null.

Specified by:

clearEnv in class Evictor

noteINListChange

public void noteINListChange(int nINs)

Do nothing.

Specified by:

noteINListChange in class Evictor

addEnvironment

public void addEnvironment(EnvironmentImpl unused)

Only supported by SharedEvictor.

Specified by:

addEnvironment in class Evictor

removeEnvironment

public void removeEnvironment(EnvironmentImpl unused)

Only supported by SharedEvictor.

Specified by:

removeEnvironment in class Evictor

checkEnv

public boolean checkEnv(EnvironmentImpl env)

Only supported by SharedEvictor.

Specified by:

checkEnv in class Evictor

startBatch

long startBatch()
          throws DatabaseException

Initializes the iterator, and performs special eviction once per batch.

Specified by:

startBatch in class Evictor

Throws:

DatabaseException

getMaxINsPerBatch

int getMaxINsPerBatch()

Returns the simple INList size.

Specified by:

getMaxINsPerBatch in class Evictor

getNextIN

IN getNextIN()

Returns the next IN, wrapping if necessary.

Specified by:

getNextIN in class Evictor

getINListStats

StatGroup getINListStats(StatsConfig config)

Return stats for the single INList covered by this evictor.

Specified by:

getINListStats in class Evictor

getScanIterator

Iterator<IN> getScanIterator()

Specified by:

getScanIterator in class Evictor

setScanIterator

void setScanIterator(Iterator<IN> iter)

Specified by:

setScanIterator in class Evictor