org.jlab.coda.emu.test

Class VardanERSAP

java.lang.Object

java.lang.Thread

org.jlab.coda.emu.test.VardanERSAP

All Implemented Interfaces:

java.lang.Runnable

public class VardanERSAP
extends java.lang.Thread

This class is an example of how one might take 2 producers (one for each ring) and have a consumer that reads one item from each ring and puts them both into a third, output ring. That output ring has a consumer that looks at each item in the output ring. Note: there are more efficient ways of programming this. This is the simplest and most straight forward. If it works, we can think about making it faster.

Author:

Carl Timmer

Nested Class Summary

Nested Classes

Modifier and Type	Class and Description
class	VardanERSAP.ByteBufferFactory Class used by the Disruptor's RingBuffer to populate itself with ByteBuffers.
(package private) class	VardanERSAP.CrateAggregatingConsumer Thread to consume from two streams in one crate and send (be a producer for) an output ring.
(package private) class	VardanERSAP.CrateProducer Thread to produce one stream in one crate.
(package private) class	VardanERSAP.OutputRingConsumer Thread to consume from output ring.

Nested classes/interfaces inherited from class java.lang.Thread

java.lang.Thread.State, java.lang.Thread.UncaughtExceptionHandler

Field Summary

Fields

Modifier and Type	Field and Description
(package private) int	byteBufferSize Size of ByteBuffers in ring.
(package private) long[]	crateAvailableSequences Track which sequence is currently available from each of the crate rings.
(package private) com.lmax.disruptor.SequenceBarrier[]	crateBarriers 1 barrier per stream
(package private) long[]	crateNextSequences Track which sequence the aggregating consumer wants next from each of the crate rings.
(package private) com.lmax.disruptor.RingBuffer<java.nio.ByteBuffer>[]	crateRingBuffers 1 RingBuffer per stream.
(package private) int	crateRingItemCount Number of items in each ring buffer.
(package private) com.lmax.disruptor.Sequence[]	crateSequences 1 sequence per stream
(package private) long	outputAvailableSequence Track which sequence is currently available from the output ring.
(package private) com.lmax.disruptor.SequenceBarrier	outputBarrier 1 barrier for output ring's consumer
(package private) long	outputNextSequence Track which sequence the output consumer wants next from output ring.
(package private) com.lmax.disruptor.RingBuffer<java.nio.ByteBuffer>	outputRingBuffer 1 output RingBuffer.
(package private) com.lmax.disruptor.Sequence	outputSequence 1 sequence for the output ring's consumer
(package private) int	streamCount Number of streams in 1 crate.

Fields inherited from class java.lang.Thread

MAX_PRIORITY, MIN_PRIORITY, NORM_PRIORITY

Constructor Summary

Constructors

Constructor and Description
VardanERSAP()

Method Summary

Modifier and Type	Method and Description
static void	main(java.lang.String[] args)
void	run() Run a setup with 2 crate producer threads, one crate consumer thread and one output ring consumer thread.

Methods inherited from class java.lang.Thread

activeCount, checkAccess, clone, countStackFrames, currentThread, destroy, dumpStack, enumerate, getAllStackTraces, getContextClassLoader, getDefaultUncaughtExceptionHandler, getId, getName, getPriority, getStackTrace, getState, getThreadGroup, getUncaughtExceptionHandler, holdsLock, interrupt, interrupted, isAlive, isDaemon, isInterrupted, join, join, join, resume, setContextClassLoader, setDaemon, setDefaultUncaughtExceptionHandler, setName, setPriority, setUncaughtExceptionHandler, sleep, sleep, start, stop, stop, suspend, toString, yield

Methods inherited from class java.lang.Object

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

Field Detail

streamCount

int streamCount

Number of streams in 1 crate.

byteBufferSize

int byteBufferSize

Size of ByteBuffers in ring.

crateRingItemCount

int crateRingItemCount

Number of items in each ring buffer. Must be power of 2.

crateRingBuffers

com.lmax.disruptor.RingBuffer<java.nio.ByteBuffer>[] crateRingBuffers

1 RingBuffer per stream.

crateSequences

com.lmax.disruptor.Sequence[] crateSequences

1 sequence per stream

crateBarriers

com.lmax.disruptor.SequenceBarrier[] crateBarriers

1 barrier per stream

crateNextSequences

long[] crateNextSequences

Track which sequence the aggregating consumer wants next from each of the crate rings.

crateAvailableSequences

long[] crateAvailableSequences

Track which sequence is currently available from each of the crate rings.

outputRingBuffer

com.lmax.disruptor.RingBuffer<java.nio.ByteBuffer> outputRingBuffer

1 output RingBuffer.

outputSequence

com.lmax.disruptor.Sequence outputSequence

1 sequence for the output ring's consumer

outputBarrier

com.lmax.disruptor.SequenceBarrier outputBarrier

1 barrier for output ring's consumer

outputNextSequence

long outputNextSequence

Track which sequence the output consumer wants next from output ring.

outputAvailableSequence

long outputAvailableSequence

Track which sequence is currently available from the output ring.

Constructor Detail

VardanERSAP

public VardanERSAP()

Method Detail

run

public void run()

Run a setup with 2 crate producer threads, one crate consumer thread and one output ring consumer thread.

Specified by:

run in interface java.lang.Runnable

Overrides:

run in class java.lang.Thread

main

public static void main(java.lang.String[] args)