Package org.jgroups.protocols

Class NON_BLOCKING_SENDS

java.lang.Object

org.jgroups.stack.Protocol

org.jgroups.protocols.NON_BLOCKING_SENDS

All Implemented Interfaces:

Lifecycle

public class NON_BLOCKING_SENDS
extends Protocol

Detects sends during processing of incoming messages and sets flag Message.TransientFlag.DONT_BLOCK to prevent blocking the incoming thread on a send.
JIRA: https://issues.redhat.com/browse/JGRP-2772

Since:

5.3.5

Author:

Bela Ban

Field Summary

Fields

Modifier and Type	Field	Description
protected boolean	fix
protected java.util.Set<java.lang.Long>	threads
protected boolean	verbose

Fields inherited from class org.jgroups.stack.Protocol

after_creation_hook, down_prot, ergonomics, id, local_addr, log, policies, stack, stats, up_prot

Constructor Summary

Constructors

Constructor	Description
NON_BLOCKING_SENDS()

Method Summary

Modifier and Type	Method	Description
java.lang.Object	down(Message msg)	A message is sent down the stack.
protected static long	threadId()
java.lang.Object	up(Message msg)	A single message was received.
void	up(MessageBatch batch)	Sends up a multiple messages in a MessageBatch.

Methods inherited from class org.jgroups.stack.Protocol

accept, addPolicy, addr, addr, afterCreationHook, destroy, down, down, enableStats, getAddress, getComponents, getDownProtocol, getDownServices, getId, getIdsAbove, getLevel, getLog, getName, getPolicies, getProtocolStack, getSocketFactory, getThreadFactory, getTransport, getUpProtocol, getUpServices, getValue, init, isErgonomics, level, parse, policies, providedDownServices, providedUpServices, removePolicy, requiredDownServices, requiredUpServices, resetStatistics, resetStats, setAddress, setDownProtocol, setErgonomics, setId, setLevel, setPolicies, setProtocolStack, setSocketFactory, setUpProtocol, setValue, start, statsEnabled, stop, toString, up

Methods inherited from class java.lang.Object

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

Field Detail

verbose

protected boolean verbose

fix

protected boolean fix

threads

protected final java.util.Set<java.lang.Long> threads

Constructor Detail

NON_BLOCKING_SENDS

public NON_BLOCKING_SENDS()

Method Detail

down

public java.lang.Object down(Message msg)

Description copied from class: Protocol

A message is sent down the stack. Protocols may examine the message and do something (e.g. add a header) with it, before passing it down.

Overrides:

down in class Protocol

up

public java.lang.Object up(Message msg)

Description copied from class: Protocol

A single message was received. Protocols may examine the message and do something (e.g. add a header) with it before passing it up.

Overrides:

up in class Protocol

up

public void up(MessageBatch batch)

Description copied from class: Protocol

Sends up a multiple messages in a MessageBatch. The sender of the batch is always the same, and so is the destination (null == multicast messages). Messages in a batch can be OOB messages, regular messages, or mixed messages, although the transport itself will create initial MessageBatches that contain only either OOB or regular messages.

The default processing below sends messages up the stack individually, based on a matching criteria (calling Protocol.accept(Message)), and - if true - calls Protocol.up(org.jgroups.Event) for that message and removes the message. If the batch is not empty, it is passed up, or else it is dropped.

Subclasses should check if there are any messages destined for them (e.g. using MessageBatch.iterator(Predicate)), then possibly remove and process them and finally pass the batch up to the next protocol. Protocols can also modify messages in place, e.g. ENCRYPT could decrypt all encrypted messages in the batch, not remove them, and pass the batch up when done.

Overrides:

up in class Protocol

Parameters:

batch - The message batch

threadId

protected static long threadId()