com.netflix.spectator.impl

Class Hash64

java.lang.Object

com.netflix.spectator.impl.Hash64

public final class Hash64
extends Object

Helper to compute a 64-bit hash incrementally based on a set of primitives and primitive arrays. It is currently using the XXH64 algorithm. See the spec for more details.

This class is an internal implementation detail only intended for use within spectator. It is subject to change without notice.

Constructor Summary

Constructors

Constructor and Description
Hash64() Create a new instance with a seed of zero.
Hash64(long seed) Create a new instance.

Method Summary

Modifier and Type	Method and Description
long	compute() Compute and return the final hash value.
long	computeAndReset() Compute the final hash value and reset the hash accumulator.
void	reset() Reset so it can be reused for computing another hash.
Hash64	updateBoolean(boolean value) Update the hash with the specified boolean value.
Hash64	updateBooleans(boolean[] values) Update the hash with the specified boolean values.
Hash64	updateBooleans(boolean[] values, int offset, int length) Update the hash with the specified boolean values.
Hash64	updateByte(byte value) Update the hash with the specified byte value.
Hash64	updateBytes(byte[] values) Update the hash with the specified byte values.
Hash64	updateBytes(byte[] values, int offset, int length) Update the hash with the specified byte values.
Hash64	updateChar(char value) Update the hash with the specified character value.
Hash64	updateChars(char[] values) Update the hash with the specified character values.
Hash64	updateChars(char[] values, int offset, int length) Update the hash with the specified character values.
Hash64	updateDouble(double value) Update the hash with the specified double value.
Hash64	updateDoubles(double[] values) Update the hash with the specified double values.
Hash64	updateDoubles(double[] values, int offset, int length) Update the hash with the specified double values.
Hash64	updateFloat(float value) Update the hash with the specified float value.
Hash64	updateFloats(float[] values) Update the hash with the specified float values.
Hash64	updateFloats(float[] values, int offset, int length) Update the hash with the specified float values.
Hash64	updateInt(int value) Update the hash with the specified int value.
Hash64	updateInts(int[] values) Update the hash with the specified int values.
Hash64	updateInts(int[] values, int offset, int length) Update the hash with the specified int values.
Hash64	updateLong(long value) Update the hash with the specified long value.
Hash64	updateLongs(long[] values) Update the hash with the specified long values.
Hash64	updateLongs(long[] values, int offset, int length) Update the hash with the specified long values.
Hash64	updateShort(short value) Update the hash with the specified short value.
Hash64	updateShorts(short[] values) Update the hash with the specified short values.
Hash64	updateShorts(short[] values, int offset, int length) Update the hash with the specified short values.
Hash64	updateString(CharSequence str) Update the hash with the specified character sequence value.

Methods inherited from class java.lang.Object

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

Constructor Detail

Hash64

public Hash64()

Create a new instance with a seed of zero.

Hash64

public Hash64(long seed)

Create a new instance.

Method Detail

reset

public void reset()

Reset so it can be reused for computing another hash.

updateBoolean

public Hash64 updateBoolean(boolean value)

Update the hash with the specified boolean value.

updateBooleans

public Hash64 updateBooleans(boolean[] values,
                             int offset,
                             int length)

Update the hash with the specified boolean values.

updateBooleans

public Hash64 updateBooleans(boolean[] values)

Update the hash with the specified boolean values.

updateChar

public Hash64 updateChar(char value)

Update the hash with the specified character value.

updateChars

public Hash64 updateChars(char[] values,
                          int offset,
                          int length)

Update the hash with the specified character values.

updateChars

public Hash64 updateChars(char[] values)

Update the hash with the specified character values.

updateString

public Hash64 updateString(CharSequence str)

Update the hash with the specified character sequence value.

updateByte

public Hash64 updateByte(byte value)

Update the hash with the specified byte value.

updateBytes

public Hash64 updateBytes(byte[] values,
                          int offset,
                          int length)

Update the hash with the specified byte values.

updateBytes

public Hash64 updateBytes(byte[] values)

Update the hash with the specified byte values.

updateShort

public Hash64 updateShort(short value)

Update the hash with the specified short value.

updateShorts

public Hash64 updateShorts(short[] values,
                           int offset,
                           int length)

Update the hash with the specified short values.

updateShorts

public Hash64 updateShorts(short[] values)

Update the hash with the specified short values.

updateInt

public Hash64 updateInt(int value)

Update the hash with the specified int value.

updateInts

public Hash64 updateInts(int[] values,
                         int offset,
                         int length)

Update the hash with the specified int values.

updateInts

public Hash64 updateInts(int[] values)

Update the hash with the specified int values.

updateLong

public Hash64 updateLong(long value)

Update the hash with the specified long value.

updateLongs

public Hash64 updateLongs(long[] values,
                          int offset,
                          int length)

Update the hash with the specified long values.

updateLongs

public Hash64 updateLongs(long[] values)

Update the hash with the specified long values.

updateFloat

public Hash64 updateFloat(float value)

Update the hash with the specified float value.

updateFloats

public Hash64 updateFloats(float[] values,
                           int offset,
                           int length)

Update the hash with the specified float values.

updateFloats

public Hash64 updateFloats(float[] values)

Update the hash with the specified float values.

updateDouble

public Hash64 updateDouble(double value)

Update the hash with the specified double value.

updateDoubles

public Hash64 updateDoubles(double[] values,
                            int offset,
                            int length)

Update the hash with the specified double values.

updateDoubles

public Hash64 updateDoubles(double[] values)

Update the hash with the specified double values.

compute

public long compute()

Compute and return the final hash value.

computeAndReset

public long computeAndReset()

Compute the final hash value and reset the hash accumulator.