org.apache.qpid.jms.provider

Class ConservativeProviderFuture

java.lang.Object

org.apache.qpid.jms.provider.ProviderFuture

org.apache.qpid.jms.provider.ConservativeProviderFuture

All Implemented Interfaces:

AsyncResult

public class ConservativeProviderFuture
extends ProviderFuture

A more conservative implementation of a ProviderFuture that is better on some platforms or resource constrained hardware where high CPU usage can be more counter productive than other variants that might spin or otherwise avoid entry into states requiring thread signalling.

Field Summary

Fields inherited from class org.apache.qpid.jms.provider.ProviderFuture

COMPLETING, error, FAILURE, INCOMPLETE, STATE_FIELD_UPDATER, SUCCESS, synchronization, waiting

Constructor Summary

Constructors

Constructor and Description
ConservativeProviderFuture()
ConservativeProviderFuture(ProviderSynchronization synchronization)

Method Summary

Modifier and Type	Method and Description
void	sync() Waits for a response to some Provider requested operation.
boolean	sync(long amount, TimeUnit unit) Timed wait for a response to a Provider operation.

Methods inherited from class org.apache.qpid.jms.provider.ProviderFuture

failOnError, isComplete, onFailure, onSuccess

Methods inherited from class java.lang.Object

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

Constructor Detail

ConservativeProviderFuture

public ConservativeProviderFuture()

ConservativeProviderFuture

public ConservativeProviderFuture(ProviderSynchronization synchronization)

Method Detail

sync

public boolean sync(long amount,
                    TimeUnit unit)
             throws ProviderException

Description copied from class: ProviderFuture

Timed wait for a response to a Provider operation.

Specified by:

sync in class ProviderFuture

Parameters:

amount - The amount of time to wait before abandoning the wait.

unit - The unit to use for this wait period.

Returns:

true if the operation succeeded and false if the waiting time elapsed while waiting for the operation to complete.

Throws:

ProviderException - if an error occurs while waiting for the response.

sync

public void sync()
          throws ProviderException

Description copied from class: ProviderFuture

Waits for a response to some Provider requested operation.

Specified by:

sync in class ProviderFuture

Throws:

ProviderException - if an error occurs while waiting for the response.