org.apache.hadoop.util
Class PureJavaCrc32C

java.lang.Object
  extended by 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


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