de.schlichtherle.io.util
Class SynchronizedInputStream

java.lang.Object
  java.io.InputStream
      de.schlichtherle.io.util.SynchronizedInputStream

All Implemented Interfaces:

Closeable

public class SynchronizedInputStream
extends InputStream

A decorator which synchronizes all access to an InputStream via an object provided to its constructor.

Since:

TrueZIP 6.4

Version:

TrueZIP 6.7

Author:

Christian Schlichtherle

Field Summary

protected InputStream	in The decorated input stream.
protected Object	lock The object to synchronize on - never null.

Constructor Summary

SynchronizedInputStream(InputStream in)
Constructs a new synchronized input stream.

SynchronizedInputStream(InputStream in, Object lock)
Constructs a new synchronized input stream.

Method Summary

int	available()
void	close() Synchronizes on the lock and calls doClose().
protected void	doClose() Closes the underlying stream.
void	mark(int readlimit)
boolean	markSupported()
int	read()
int	read(byte[] b)
int	read(byte[] b, int off, int len)
void	reset()
long	skip(long n)

Methods inherited from class java.lang.Object

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

Field Detail

lock

protected final Object lock

The object to synchronize on - never null.

in

protected InputStream in

The decorated input stream.

Constructor Detail

SynchronizedInputStream

public SynchronizedInputStream(InputStream in)

Constructs a new synchronized input stream. This object will synchronize on itself.

Parameters:

in - The input stream to wrap in this decorator.

SynchronizedInputStream

public SynchronizedInputStream(InputStream in,
                               Object lock)

Constructs a new synchronized input stream.

Parameters:

in - The input stream to wrap in this decorator.

lock - The object to synchronize on. If null, then this object is used, not the stream.

Method Detail

read

public int read()
         throws IOException

Specified by:

read in class InputStream

Throws:

IOException

read

public int read(byte[] b)
         throws IOException

Overrides:

read in class InputStream

Throws:

IOException

read

public int read(byte[] b,
                int off,
                int len)
         throws IOException

Overrides:

read in class InputStream

Throws:

IOException

skip

public long skip(long n)
          throws IOException

Overrides:

skip in class InputStream

Throws:

IOException

available

public int available()
              throws IOException

Overrides:

available in class InputStream

Throws:

IOException

close

public void close()
           throws IOException

Synchronizes on the lock and calls doClose().

Specified by:

close in interface Closeable

Overrides:

close in class InputStream

Throws:

IOException

doClose

protected void doClose()
                throws IOException

Closes the underlying stream. This method is not synchronized!

Throws:

IOException

mark

public void mark(int readlimit)

Overrides:

mark in class InputStream

reset

public void reset()
           throws IOException

Overrides:

reset in class InputStream

Throws:

IOException

markSupported

public boolean markSupported()

Overrides:

markSupported in class InputStream