org.apache.activemq.artemis.utils.actors

Class ProcessorBase<T>

java.lang.Object

org.apache.activemq.artemis.utils.actors.HandlerBase

org.apache.activemq.artemis.utils.actors.ProcessorBase<T>

Direct Known Subclasses:

Actor, OrderedExecutor

public abstract class ProcessorBase<T>
extends HandlerBase

Field Summary

Fields

Modifier and Type	Field and Description
static int	STATE_FORCED_SHUTDOWN
static int	STATE_NOT_RUNNING
static int	STATE_RUNNING
protected Queue<T>	tasks

Constructor Summary

Constructors

Constructor and Description
ProcessorBase(Executor parent)

Method Summary

Modifier and Type	Method and Description
protected abstract void	doTask(T task)
boolean	flush(long timeout, TimeUnit unit) WARNING: This will only flush when all the activity is suspended.
boolean	isFlushed()
int	remaining() Returns the remaining items to be processed.
void	shutdown() It will shutdown and wait 30 seconds for timeout.
void	shutdown(long timeout, TimeUnit unit)
int	shutdownNow(java.util.function.Consumer<? super T> onPendingItem) It will wait the current execution (if there is one) to finish but will not complete any further executions
int	status()
protected void	task(T command)

Methods inherited from class org.apache.activemq.artemis.utils.actors.HandlerBase

enter, inHandler, leave

Methods inherited from class java.lang.Object

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

Field Detail

STATE_NOT_RUNNING

public static final int STATE_NOT_RUNNING

See Also:

Constant Field Values

STATE_RUNNING

public static final int STATE_RUNNING

See Also:

Constant Field Values

STATE_FORCED_SHUTDOWN

public static final int STATE_FORCED_SHUTDOWN

See Also:

Constant Field Values

tasks

protected final Queue<T> tasks

Constructor Detail

ProcessorBase

public ProcessorBase(Executor parent)

Method Detail

shutdown

public void shutdown()

It will shutdown and wait 30 seconds for timeout.

shutdown

public void shutdown(long timeout,
                     TimeUnit unit)

shutdownNow

public int shutdownNow(java.util.function.Consumer<? super T> onPendingItem)

It will wait the current execution (if there is one) to finish but will not complete any further executions

doTask

protected abstract void doTask(T task)

isFlushed

public final boolean isFlushed()

flush

public final boolean flush(long timeout,
                           TimeUnit unit)

WARNING: This will only flush when all the activity is suspended. don't expect success on this call if another thread keeps feeding the queue this is only valid on situations where you are not feeding the queue, like in shutdown and failover situations.

task

protected void task(T command)

remaining

public final int remaining()

Returns the remaining items to be processed.

This method is safe to be called by different threads and its accuracy is subject to concurrent modifications.
It is meant to be used only for test purposes, because of its O(n) cost.

status

public final int status()