p2pMapReduce.util
Class ReferenceHolder

java.lang.Object
  extended by java.lang.Thread
      extended by p2pMapReduce.util.ReferenceHolder
All Implemented Interfaces:
java.lang.Runnable

public class ReferenceHolder
extends java.lang.Thread

Utility to keep object references in order to make them not removable from garbage collector. Useful for singleton instance.


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
 
Method Summary
static ReferenceHolder getInstance()
           
 void persist(java.lang.Object o)
           
 void run()
           
 void unPersist(java.lang.Object o)
           
 
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
 

Method Detail

getInstance

public static ReferenceHolder getInstance()

run

public void run()
Specified by:
run in interface java.lang.Runnable
Overrides:
run in class java.lang.Thread

persist

public void persist(java.lang.Object o)

unPersist

public void unPersist(java.lang.Object o)