net.lecousin.framework.concurrent

Class ThreadPoolTaskManager

java.lang.Object

net.lecousin.framework.concurrent.TaskManager

net.lecousin.framework.concurrent.ThreadPoolTaskManager

public class ThreadPoolTaskManager
extends TaskManager

A Task Manager that use a pool of threads to execute tasks. This is used for unmanaged tasks, that may use several physical resources and block at any time, typically when using functionalities from a library that is not designed to be used with LCCore. Each time a new task comes, if the number of active threads is less than the maximum number of threads, a new thread is launched to execute the task, else it is queued. When a thread finishes a task, it checkes if tasks are present in the queue. If yes, it peeks one and execute it. Else the thread ends.

Field Summary

Fields inherited from class net.lecousin.framework.concurrent.TaskManager

stopped, stopping, taskPriorityManager, threadFactory, transferredTo

Constructor Summary

Constructors

Constructor and Description
ThreadPoolTaskManager(String name, Object resource, int maxThreads, ThreadFactory threadFactory, Class<? extends TaskPriorityManager> taskPriorityManager) Constructor.

Method Summary

Modifier and Type	Method and Description
protected void	add(Task<?,?> t)
void	debug(StringBuilder s) Describe what threads are doing for debugging purpose.
protected void	finishAndStopThreads()
protected void	finishTransfer()
protected void	forceStopThreads()
void	printStats(StringBuilder s) Print statistics to the given StringBuilder.

Methods inherited from class net.lecousin.framework.concurrent.TaskManager

getName, getResource, getTransferTarget, setName

Methods inherited from class java.lang.Object

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

Constructor Detail

ThreadPoolTaskManager

public ThreadPoolTaskManager(String name,
                             Object resource,
                             int maxThreads,
                             ThreadFactory threadFactory,
                             Class<? extends TaskPriorityManager> taskPriorityManager)

Constructor.

Method Detail

finishAndStopThreads

protected void finishAndStopThreads()

Specified by:

finishAndStopThreads in class TaskManager

forceStopThreads

protected void forceStopThreads()

Specified by:

forceStopThreads in class TaskManager

finishTransfer

protected void finishTransfer()

Specified by:

finishTransfer in class TaskManager

add

protected void add(Task<?,?> t)

Overrides:

add in class TaskManager

debug

public void debug(StringBuilder s)

Description copied from class: TaskManager

Describe what threads are doing for debugging purpose.

Specified by:

debug in class TaskManager

printStats

public void printStats(StringBuilder s)

Description copied from class: TaskManager

Print statistics to the given StringBuilder.

Specified by:

printStats in class TaskManager