spacewar
Class GameCoordinator

java.lang.Object
  |
  +--coordination.Coordinator
        |
        +--spacewar.GameCoordinator

class GameCoordinator
extends Coordinator

This aspect ensures synchronized access to methods of the Game in the presence of several threads. It uses the Coordinator class, from the AspectJ coordination library. (This case is right on the borderline of being too simple to use the coordination library, but we use it anyways to keep the similarity with the RegistrySynchronizer.) It uses a per-Game coordination scheme, so there is one instance of this class for each instance of the Game class. When this class is constructed, it registers appropriate mutexes and selfexes using the behavior inherited from Coordinator. The coordination constraints for the Game are simple. We just need to make sure that newShip and handleCollisions are mutually exclusive. That ensures that they we can't destroy a ship that has just been replaced.


Crosscut Summary
coordinatorCut()
 

 
Constructor Summary
(package private) GameCoordinator()
          
 
Methods inherited from class coordination.Coordinator
addMutex, addSelfex, guardedEntry, guardedEntry, guardedEntry, guardedEntry, guardedEntryWithTimeout, guardedEntryWithTimeout, guardedEntryWithTimeout, guardedEntryWithTimeout, guardedExit, guardedExit, removeMutex, removeSelfex
 
Methods inherited from class java.lang.Object
, clone, equals, finalize, getClass, hashCode, notify, notifyAll, toString, wait, wait, wait
 

 
Crosscut Detail

coordinatorCut()

Constructor Detail

GameCoordinator

GameCoordinator()