org.metasyntactic.thread
Class SingleReaderWriterMonitor

java.lang.Object
  |
  +--org.metasyntactic.thread.SingleReaderWriterMonitor

All Implemented Interfaces:

ReaderWriterMonitor

public class SingleReaderWriterMonitor

extends java.lang.Object

implements ReaderWriterMonitor

This is equivalent to a Semaphore.

See Also:

ReaderWriterMonitor

Field Summary

protected boolean	locked
protected int	n Number readers reading and writers writing, 0 or 1.

Constructor Summary

SingleReaderWriterMonitor()

Method Summary

void	startReading() Called to begin reading the shared data structure.
void	startWriting() Called to begin writing the shared data structure.
void	stopReading() Called when the thread is finished reading the shared data structure.
void	stopWriting() Called when the thread is finished writing the shared data structure.

Methods inherited from class java.lang.Object

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

Field Detail

n

protected int n

Number readers reading and writers writing, 0 or 1.

locked

protected boolean locked

Constructor Detail

SingleReaderWriterMonitor

public SingleReaderWriterMonitor()

Method Detail

startReading

public void startReading()
                  throws java.lang.InterruptedException

Description copied from interface: ReaderWriterMonitor

Called to begin reading the shared data structure. exception InterruptedException If interrupted while waiting for access.

Specified by:

startReading in interface ReaderWriterMonitor

Throws:

java.lang.InterruptedException - When the thread is interrupted before starting

stopReading

public void stopReading()

Description copied from interface: ReaderWriterMonitor

Called when the thread is finished reading the shared data structure.

Specified by:

stopReading in interface ReaderWriterMonitor

startWriting

public void startWriting()
                  throws java.lang.InterruptedException

Description copied from interface: ReaderWriterMonitor

Called to begin writing the shared data structure. exception InterruptedException If interrupted while waiting for access.

Specified by:

startWriting in interface ReaderWriterMonitor

Throws:

java.lang.InterruptedException - When the thread is interrupted before starting

stopWriting

public void stopWriting()

Description copied from interface: ReaderWriterMonitor

Called when the thread is finished writing the shared data structure.

Specified by:

stopWriting in interface ReaderWriterMonitor