Package org.jfree.report.util
Class Worker
- java.lang.Object
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- java.lang.Thread
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- org.jfree.report.util.Worker
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- All Implemented Interfaces:
java.lang.Runnable
public final class Worker extends java.lang.Thread
A simple worker implementation. The worker executes a assigned workload and then sleeps until another workload is set or the worker is killed.- Author:
- Thomas Morgner
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Constructor Summary
Constructors Constructor Description Worker()
Creates a new worker.
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Method Summary
All Methods Instance Methods Concrete Methods Modifier and Type Method Description void
finish()
Kills the worker after he completed his work.WorkerPool
getWorkerPool()
Returns the worker's assigned pool.java.lang.Runnable
getWorkload()
Returns the workload object.boolean
isAvailable()
Checks, whether this worker has some work to do.boolean
isFinish()
Checks whether this worker has received the signal to finish and die.void
run()
If a workload is set, process it.void
setWorkerPool(WorkerPool workerPool)
Defines the worker's assigned pool.void
setWorkload(java.lang.Runnable r)
Set the next workload for this worker.-
Methods inherited from class java.lang.Thread
activeCount, checkAccess, clone, countStackFrames, currentThread, dumpStack, enumerate, getAllStackTraces, getContextClassLoader, getDefaultUncaughtExceptionHandler, getId, getName, getPriority, getStackTrace, getState, getThreadGroup, getUncaughtExceptionHandler, holdsLock, interrupt, interrupted, isAlive, isDaemon, isInterrupted, join, join, join, onSpinWait, resume, setContextClassLoader, setDaemon, setDefaultUncaughtExceptionHandler, setName, setPriority, setUncaughtExceptionHandler, sleep, sleep, start, stop, suspend, toString, yield
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Method Detail
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setWorkload
public void setWorkload(java.lang.Runnable r)
Set the next workload for this worker.- Parameters:
r
- the next workload for the worker.- Throws:
java.lang.IllegalStateException
- if the worker is not idle.
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getWorkload
public java.lang.Runnable getWorkload()
Returns the workload object.- Returns:
- the runnable executed by this worker thread.
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finish
public void finish()
Kills the worker after he completed his work. Awakens the worker if he's sleeping, so that the worker dies without delay.
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isAvailable
public boolean isAvailable()
Checks, whether this worker has some work to do.- Returns:
- true, if this worker has no more work and is currently sleeping.
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run
public void run()
If a workload is set, process it. After the workload is processed, this worker starts to sleep until a new workload is set for the worker or the worker got the finish() request.- Specified by:
run
in interfacejava.lang.Runnable
- Overrides:
run
in classjava.lang.Thread
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isFinish
public boolean isFinish()
Checks whether this worker has received the signal to finish and die.- Returns:
- true, if the worker should finish the work and end the thread.
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getWorkerPool
public WorkerPool getWorkerPool()
Returns the worker's assigned pool.- Returns:
- the worker pool (or null, if the worker is not assigned to a pool).
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setWorkerPool
public void setWorkerPool(WorkerPool workerPool)
Defines the worker's assigned pool.- Parameters:
workerPool
- the worker pool (or null, if the worker is not assigned to a pool).
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