org.cip4.jdflib.util.thread

Class MultiTaskQueue

java.lang.Object

java.lang.Thread

org.cip4.jdflib.util.thread.OrderedTaskQueue

org.cip4.jdflib.util.thread.MultiTaskQueue

All Implemented Interfaces:

Runnable

public class MultiTaskQueue
extends OrderedTaskQueue

class to run heavy tasks one at a time

Author:

Rainer Prosi, Heidelberger Druckmaschinen *

Nested Class Summary

Nested classes/interfaces inherited from class java.lang.Thread

Thread.State, Thread.UncaughtExceptionHandler

Field Summary

Fields inherited from class java.lang.Thread

MAX_PRIORITY, MIN_PRIORITY, NORM_PRIORITY

Method Summary

Methods

Modifier and Type	Method and Description
static MultiTaskQueue	getCreateQueue(String name, int maxParallel) grab the queue
int	getCurrentRunning() get the number of currently running tasks
boolean	interruptCurrent(int minAge)
boolean	interruptTask(Runnable theRunner)
void	setMaxParallel(int maxParallel)
String	toString()

Methods inherited from class org.cip4.jdflib.util.thread.OrderedTaskQueue

getAvQueue, getAvRun, getCreateQueue, getDone, getSumQueue, getSumRun, queue, run, shutDown, shutDownAll, size

Methods inherited from class java.lang.Thread

activeCount, checkAccess, clone, countStackFrames, currentThread, destroy, dumpStack, enumerate, getAllStackTraces, getContextClassLoader, getDefaultUncaughtExceptionHandler, getId, getName, getPriority, getStackTrace, getState, getThreadGroup, getUncaughtExceptionHandler, holdsLock, interrupt, interrupted, isAlive, isDaemon, isInterrupted, join, join, join, resume, setContextClassLoader, setDaemon, setDefaultUncaughtExceptionHandler, setName, setPriority, setUncaughtExceptionHandler, sleep, sleep, start, stop, stop, suspend, yield

Methods inherited from class java.lang.Object

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

Method Detail

getCreateQueue

public static MultiTaskQueue getCreateQueue(String name,
                            int maxParallel)

grab the queue

Parameters:

name - - must not be null

maxParallel - ignored if <=0

Returns:

the queue to fill with tasks

setMaxParallel

public void setMaxParallel(int maxParallel)

Parameters:

maxParallel -

getCurrentRunning

public int getCurrentRunning()

get the number of currently running tasks

Returns:

interruptCurrent

public boolean interruptCurrent(int minAge)

Overrides:

interruptCurrent in class OrderedTaskQueue

Parameters:

minAge - minimum age to interrupt

Returns:

true if we successfully interrupted or no entries were running

interruptTask

public boolean interruptTask(Runnable theRunner)

Parameters:

theRunner - runner to zapp

Returns:

true if we successfully interrupted or no entries were running

toString

public String toString()

Overrides:

toString in class OrderedTaskQueue

Returns:

See Also:

Thread.toString()