Package com.scurrilous.circe

Interface StatelessIntHash

All Superinterfaces:

Hash, StatelessHash

All Known Subinterfaces:

IncrementalIntHash

All Known Implementing Classes:

AbstractIncrementalIntHash, AbstractIntCrc, AbstractStatelessIntHash, NormalByteCrc, NormalIntCrc, ReflectedIntCrc, Sse42Crc32C

public interface StatelessIntHash
extends StatelessHash

Interface implemented by stateless hash functions with an output length of 4 bytes or less.

Method Summary

Modifier and Type	Method	Description
int	calculate(byte[] input)	Evaluates this hash function for the entire given input array.
int	calculate(byte[] input, int index, int length)	Evaluates this hash function for the given range of the given input array.
int	calculate(long address, long length)	Evaluates this hash function for the memory with the given address and length.
int	calculate(java.nio.ByteBuffer input)	Evaluates this hash function with the remaining contents of the given input buffer.
StatefulIntHash	createStateful()	Returns a new instance of stateful version of this hash function.

Methods inherited from interface com.scurrilous.circe.Hash

algorithm, length, supportsUnsafe

Method Detail

createStateful

StatefulIntHash createStateful()

Returns a new instance of stateful version of this hash function.

Specified by:

createStateful in interface StatelessHash

Returns:

the stateful version of this hash function

calculate

int calculate(byte[] input)

Evaluates this hash function for the entire given input array.

Parameters:

input - the input array

Returns:

the output of the hash function

calculate

int calculate(byte[] input,
              int index,
              int length)

Evaluates this hash function for the given range of the given input array.

Parameters:

input - the input array

index - the starting index of the first input byte

length - the length of the input range

Returns:

the output of the hash function

Throws:

java.lang.IndexOutOfBoundsException - if index is negative or index + length is greater than the array length

calculate

int calculate(java.nio.ByteBuffer input)

Evaluates this hash function with the remaining contents of the given input buffer. This method leaves the buffer position at the limit.

Parameters:

input - the input buffer

Returns:

the output of the hash function

calculate

int calculate(long address,
              long length)

Evaluates this hash function for the memory with the given address and length. The arguments are generally not checked in any way and will likely lead to a VM crash or undefined results if invalid.

Parameters:

address - the base address of the input

length - the length of the input

Returns:

the output of the hash function

Throws:

java.lang.UnsupportedOperationException - if this function does not support unsafe memory access

See Also:

Hash.supportsUnsafe()