com.lmax.disruptor.util
Class Util

java.lang.Object
  com.lmax.disruptor.util.Util

public final class Util
extends java.lang.Object

Set of common functions used by the Disruptor

Constructor Summary

Util()

Method Summary

static int	ceilingNextPowerOfTwo(int x) Calculate the next power of 2, greater than or equal to x.
static long	getMinimumSequence(Sequence[] sequences) Get the minimum sequence from an array of Sequences.
static Sequence[]	getSequencesFor(EventProcessor... processors) Get an array of Sequences for the passed EventProcessors
static sun.misc.Unsafe	getUnsafe()

Methods inherited from class java.lang.Object

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

Constructor Detail

Util

public Util()

Method Detail

ceilingNextPowerOfTwo

public static int ceilingNextPowerOfTwo(int x)

Calculate the next power of 2, greater than or equal to x.

From Hacker's Delight, Chapter 3, Harry S. Warren Jr.

Parameters:

x - Value to round up

Returns:

The next power of 2 from x inclusive

getMinimumSequence

public static long getMinimumSequence(Sequence[] sequences)

Get the minimum sequence from an array of Sequences.

Parameters:

sequences - to compare.

Returns:

the minimum sequence found or Long.MAX_VALUE if the array is empty.

getSequencesFor

public static Sequence[] getSequencesFor(EventProcessor... processors)

Get an array of Sequences for the passed EventProcessors

Parameters:

processors - for which to get the sequences

Returns:

the array of Sequences

getUnsafe

public static sun.misc.Unsafe getUnsafe()