i3.dragos.core
Class TaskScheduler

java.lang.Object
  java.lang.Thread
      i3.dragos.core.TaskScheduler

All Implemented Interfaces:

KernelModule, java.lang.Runnable

public final class TaskScheduler
extends java.lang.Thread
implements KernelModule

The TaskScheduler executes all registered tasks on a regular basis.

Author:

Boris Boehlen <boehlen@cs.rwth-aachen.de>

Nested Class Summary

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

java.lang.Thread.State, java.lang.Thread.UncaughtExceptionHandler

Field Summary

Fields inherited from class java.lang.Thread

MAX_PRIORITY, MIN_PRIORITY, NORM_PRIORITY

Constructor Summary

TaskScheduler()
Consttructs the task scheduler.

Method Summary

void	addTask(Task task) Adds the specified task to the scheduler.
static TaskScheduler	getInstance() Returns the task scheduler registered to the module manager.
java.lang.String	getRole() Returns the kernel module's role.
void	initialize() Initializes the kernel module.
void	removeTask(Task task) Removes the specified task from the scheduler.
void	run() Schedules the execution of the tasks.
void	uninitialize() Uninitializes the kernel module and releases all resources used by it.

Methods inherited from class java.lang.Thread

activeCount, checkAccess, 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, toString, yield

Methods inherited from class java.lang.Object

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

Constructor Detail

TaskScheduler

public TaskScheduler()

Consttructs the task scheduler.

Method Detail

getInstance

public static TaskScheduler getInstance()

Returns the task scheduler registered to the module manager.

Returns:

the task scheduler registered to the module manager.

getRole

public java.lang.String getRole()

Returns the kernel module's role.

Specified by:

getRole in interface KernelModule

Returns:

the kernel module's role.

initialize

public void initialize()

Initializes the kernel module.

Specified by:

initialize in interface KernelModule

uninitialize

public void uninitialize()

Uninitializes the kernel module and releases all resources used by it.

Specified by:

uninitialize in interface KernelModule

run

public void run()

Schedules the execution of the tasks.

Specified by:

run in interface java.lang.Runnable

Overrides:

run in class java.lang.Thread

addTask

public void addTask(Task task)

Adds the specified task to the scheduler. If the tasks is already managed by the scheduler only its execution interval is modified.

Parameters:

task - The task that is added.

removeTask

public void removeTask(Task task)

Removes the specified task from the scheduler.

Parameters:

task - The task that is removed.