org.apache.hadoop.util
Class PureJavaCrc32C

java.lang.Object
  org.apache.hadoop.util.PureJavaCrc32C

All Implemented Interfaces:

Checksum

@InterfaceAudience.Public
@InterfaceStability.Stable
public class PureJavaCrc32C
extends Object
implements Checksum

A pure-java implementation of the CRC32 checksum that uses the CRC32-C polynomial, the same polynomial used by iSCSI and implemented on many Intel chipsets supporting SSE4.2.

Constructor Summary

PureJavaCrc32C()
Create a new PureJavaCrc32 object.

Method Summary

long	getValue()
void	reset()
void	update(byte[] b, int off, int len)
void	update(int b)

Methods inherited from class java.lang.Object

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

Constructor Detail

PureJavaCrc32C

public PureJavaCrc32C()

Create a new PureJavaCrc32 object.

Method Detail

getValue

public long getValue()

Specified by:

getValue in interface Checksum

reset

public void reset()

Specified by:

reset in interface Checksum

update

public void update(byte[] b,
                   int off,
                   int len)

Specified by:

update in interface Checksum

update

public final void update(int b)

Specified by:

update in interface Checksum