| 1 | package de.uka.ipd.sdq.scheduler.events; |
| 2 | |
| 3 | import org.apache.log4j.Logger; |
| 4 | |
| 5 | import de.uka.ipd.sdq.scheduler.SchedulerModel; |
| 6 | import de.uka.ipd.sdq.scheduler.processes.IActiveProcess; |
| 7 | import de.uka.ipd.sdq.scheduler.strategy.IScheduler; |
| 8 | import de.uka.ipd.sdq.simulation.abstractsimengine.AbstractSimEventDelegator; |
| 9 | |
| 10 | /** |
| 11 | * Event to proceed the activity of a process. This event requires, that at the |
| 12 | * time it happens, the current demand of the process is zero, thus all former |
| 13 | * actions of the process have been finished. |
| 14 | * |
| 15 | * This event can either continue the process directly or execute a delayed |
| 16 | * action of the process. Delayed actions are activities that are executed by |
| 17 | * the scheduler (e.g. some housekeeping or asking for access to a passive |
| 18 | * resource) but require the process to be running. DelayedActions have priority |
| 19 | * of the proceeding of the process as they have to be finished in oder to |
| 20 | * continue process execution. |
| 21 | * |
| 22 | * @author jens |
| 23 | * |
| 24 | */ |
| 25 | public class ProceedEvent extends AbstractSimEventDelegator<IActiveProcess> { |
| 26 | |
| 27 | private IDelayedAction action; |
| 28 | protected IScheduler scheduler; |
| 29 | static Logger logger = Logger.getLogger(ProceedEvent.class); |
| 30 | |
| 31 | public ProceedEvent(SchedulerModel model) { |
| 32 | super(model, "ProceedEvent"); |
| 33 | this.action = null; |
| 34 | } |
| 35 | |
| 36 | public void setDelayedAction(IDelayedAction action) { |
| 37 | this.action = action; |
| 38 | } |
| 39 | |
| 40 | @Override |
| 41 | public void eventRoutine(IActiveProcess process) { |
| 42 | logger.debug("Proceed Event handler triggered"); |
| 43 | process.toNow(); |
| 44 | if (action != null) { |
| 45 | // once the action has been successfully executed it is removed. |
| 46 | if (action.perform()) |
| 47 | action = null; |
| 48 | } else { |
| 49 | process.getSchedulableProcess().activate(); |
| 50 | } |
| 51 | } |
| 52 | |
| 53 | public void setScheduler(IScheduler scheduler) { |
| 54 | this.scheduler = scheduler; |
| 55 | } |
| 56 | |
| 57 | } |