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org.gjt.sp.util
Class ReadWriteLock  

java.lang.Object
  org.gjt.sp.util.ReadWriteLock

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public class ReadWriteLock

extends java.lang.Object

Implements consumer/producer locking scemantics.

Version:

$Id: ReadWriteLock.java,v 1.6 2003/01/31 04:49:31 spestov Exp $

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Field Summary
private  int	activeReaders
private  int	activeWriters
private  int	lockCount
private  java.util.Vector	readers
private  int	waitingReaders
private  int	waitingWriters
private  java.lang.Thread	writerThread

 

Constructor Summary

ReadWriteLock()

 

Method Summary
private  boolean	allowRead()
private  boolean	allowWrite()
private  void	claimWriteLock()
boolean	isWriteLocked()
void	readLock()
void	readUnlock()
void	writeLock()
void	writeUnlock()

 

Methods inherited from class java.lang.Object

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

 

Field Detail

activeReaders

private int activeReaders

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activeWriters

private int activeWriters

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waitingReaders

private int waitingReaders

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waitingWriters

private int waitingWriters

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readers

private java.util.Vector readers

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writerThread

private java.lang.Thread writerThread

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lockCount

private int lockCount

Constructor Detail

ReadWriteLock

public ReadWriteLock()

Method Detail

readLock

public void readLock()

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readUnlock

public void readUnlock()

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writeLock

public void writeLock()

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writeUnlock

public void writeUnlock()

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isWriteLocked

public boolean isWriteLocked()

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allowRead

private final boolean allowRead()

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allowWrite

private final boolean allowWrite()

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claimWriteLock

private void claimWriteLock()

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