Package edu.kit.ipd.sdq.pcm.simulation.scheduler.exact.strategy.impl

Class AbstractScheduler

java.lang.Object

edu.kit.ipd.sdq.pcm.simulation.scheduler.exact.strategy.impl.AbstractScheduler

All Implemented Interfaces:

IScheduler

Direct Known Subclasses:

PreemptiveScheduler

public abstract class AbstractScheduler
extends Object
implements IScheduler

Field Summary

Fields

Modifier and Type	Field	Description
protected IQueueingStrategy	queueing_strategy
protected SimActiveResource	resource
protected double	scheduling_interval
protected StarvationBoost	starvationBoost

Constructor Summary

Constructors

Constructor	Description
AbstractScheduler(SimActiveResource resource, IQueueingStrategy queueingStrategy, boolean in_front_after_waiting, StarvationBoost starvationBoost)

Method Summary

Modifier and Type	Method	Description
void	forkNewProcess(IActiveProcess process, IResourceInstance current)	Registers a new process and adds it to the scheduler's runqueue(s).
protected void	fromReadyToRunningOn(IActiveProcess process, IResourceInstance instance)	Marks the given process as executing on the specified resource instance.
protected void	fromRunningToReady(IActiveProcess process, IResourceInstance current, boolean inFront)
void	fromRunningToWaiting(WaitingProcess waiting_process, Deque<de.uka.ipd.sdq.scheduler.processes.IWaitingProcess> waiting_queue, boolean in_front)	Notifies the scheduler, that a running process has to change its state to waiting.
void	fromWaitingToReady(WaitingProcess waiting_process, Deque<de.uka.ipd.sdq.scheduler.processes.IWaitingProcess> waitingQueue, IResourceInstance current)	Notifies the scheduler, that a process finished its waiting period and becomes ready for execution.
void	registerProcess(IActiveProcess p, IResourceInstance instance)
void	terminateProcess(IActiveProcess process, IResourceInstance current)

Methods inherited from class java.lang.Object

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

Methods inherited from interface edu.kit.ipd.sdq.pcm.simulation.scheduler.exact.strategy.IScheduler

getInterval, getQueueLengthFor, isIdle, schedule, scheduleNextEvent

Field Details

resource

protected SimActiveResource resource

queueing_strategy

protected IQueueingStrategy queueing_strategy

scheduling_interval

protected double scheduling_interval

starvationBoost

protected StarvationBoost starvationBoost

Constructor Details

AbstractScheduler

public AbstractScheduler(SimActiveResource resource,
 IQueueingStrategy queueingStrategy,
 boolean in_front_after_waiting,
 StarvationBoost starvationBoost)

Method Details

forkNewProcess

public void forkNewProcess(IActiveProcess process,
 IResourceInstance current)

Description copied from interface: IScheduler

Registers a new process and adds it to the scheduler's runqueue(s).

Specified by:

forkNewProcess in interface IScheduler

registerProcess

public void registerProcess(IActiveProcess p,
 IResourceInstance instance)

Specified by:

registerProcess in interface IScheduler

terminateProcess

public void terminateProcess(IActiveProcess process,
 IResourceInstance current)

Specified by:

terminateProcess in interface IScheduler

fromReadyToRunningOn

protected void fromReadyToRunningOn(IActiveProcess process,
 IResourceInstance instance)

Marks the given process as executing on the specified resource instance.

Parameters:

process -

instance -

fromRunningToReady

protected void fromRunningToReady(IActiveProcess process,
 IResourceInstance current,
 boolean inFront)

Parameters:

process -

fromRunningToWaiting

public void fromRunningToWaiting(WaitingProcess waiting_process,
 Deque<de.uka.ipd.sdq.scheduler.processes.IWaitingProcess> waiting_queue,
 boolean in_front)

Description copied from interface: IScheduler

Notifies the scheduler, that a running process has to change its state to waiting. Takes care of the complete state change, including the insertion of the process into the waiting queue.

Specified by:

fromRunningToWaiting in interface IScheduler

Parameters:

waiting_process - Wrapper for the waiting process. Includes additional information about the waiting state.

waiting_queue - The queue where the process has to wait.

in_front - If true, the process is inserted at the front of the queue, otherwise it is inserted at the end.

fromWaitingToReady

public void fromWaitingToReady(WaitingProcess waiting_process,
 Deque<de.uka.ipd.sdq.scheduler.processes.IWaitingProcess> waitingQueue,
 IResourceInstance current)

Description copied from interface: IScheduler

Notifies the scheduler, that a process finished its waiting period and becomes ready for execution. It takes care of the complete state change including the removal of the process from its waiting queue.

Specified by:

fromWaitingToReady in interface IScheduler

Parameters:

waiting_process - Wrapper for the waiting process.

waitingQueue - Queue where the process is waiting.