hydra

Class PortBlackboard

java.lang.Object

hydra.blackboard.Blackboard

hydra.PortBlackboard

public class PortBlackboard
extends Blackboard

Holds a singleton instance per VM.

The shared map holds host:port combinations. The keys are strings that look like "host:port". Values are unused. Use a shared lock on this blackboard to atomically read and update the map.

Field Summary

Fields

Modifier and Type	Field and Description
static PortBlackboard	blackboard

Fields inherited from class hydra.blackboard.Blackboard

counterNames, GemFire, RMI

Constructor Summary

Constructors

Constructor and Description
PortBlackboard() Zero-arg constructor for remote method invocations.
PortBlackboard(String name, String type)

Method Summary

Modifier and Type	Method and Description
static PortBlackboard	getInstance() Creates a singleton blackboard.

Methods inherited from class hydra.blackboard.Blackboard

createSharedCounters, createSharedLock, createSharedMap, getCounterNames, getSharedCounter, getSharedCounters, getSharedLock, getSharedMap, print, printSharedCounters, printSharedMap

Methods inherited from class java.lang.Object

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

Field Detail

blackboard

public static PortBlackboard blackboard

Constructor Detail

PortBlackboard

public PortBlackboard()

Zero-arg constructor for remote method invocations.

PortBlackboard

public PortBlackboard(String name,
                      String type)

Method Detail

getInstance

public static PortBlackboard getInstance()

Creates a singleton blackboard.