com.bigdata.util.concurrent

Class AbstractHaltableProcess

java.lang.Object

com.bigdata.util.concurrent.AbstractHaltableProcess

Direct Known Subclasses:

AbstractMasterTask

public abstract class AbstractHaltableProcess
extends Object

Abstract base class for tasks whose processing may be halted asynchronously.

Version:

$Id$

Author:

Bryan Thompson

Field Summary

Fields

Modifier and Type	Field and Description
protected static org.apache.log4j.Logger	log

Constructor Summary

Constructors

Constructor and Description
AbstractHaltableProcess()

Method Summary

Methods

Modifier and Type	Method and Description
<T extends Throwable> T	halt(T cause) Indicate that processing should halt.
void	halted() Return unless processing has been halted.

Methods inherited from class java.lang.Object

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

Field Detail

log

protected static final transient org.apache.log4j.Logger log

Constructor Detail

AbstractHaltableProcess

public AbstractHaltableProcess()

Method Detail

halted

public final void halted()

Return unless processing has been halted.

Throws:

RuntimeException - wrapping the firstCause iff processing has been halted.

See Also:

halt(Throwable)

halt

public final <T extends Throwable> T halt(T cause)

Indicate that processing should halt. This method is written defensively and will not throw anything. The caller is responsible for throwing the cause out of their own context.

Parameters:

cause - The cause.

Returns:

The argument.